WO2024098394A1

WO2024098394A1 - Thermal management component, battery module, battery, and electrical apparatus

Info

Publication number: WO2024098394A1
Application number: PCT/CN2022/131457
Authority: WO
Inventors: 李艳磊; 赵宾
Original assignee: 宁德时代新能源科技股份有限公司
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2024-05-16
Also published as: CN119256430A

Abstract

Provided in the present application are a thermal management component, a battery module, a battery, and an electrical apparatus. The thermal management component comprises a body, a cavity used for containing a heat exchange medium being provided in the body, and an opening communicating with the cavity being provided in the body; and a bus member which is connected to the body and seals the opening. In the technical solution of the present application, the bus member is connected to the body of the thermal management component, so as to allow the heat exchange medium contained in the cavity to be in direct contact with the bus member, thereby effectively improving the temperature regulation effect of the thermal management component on the bus member. In addition, when the thermal management component is applied to a battery module or a battery, the bus member can be electrically connected to battery cells, such that the bus member electrically connected to the battery cells can perform heat conduction on the battery cells more quickly, thereby effectively improving the temperature regulation effect of the thermal management component on the battery cells, and further effectively improving the reliability of batteries.

Description

Thermal management components, battery modules, batteries and electrical devices

Technical Field

The present application relates to the field of battery technology, and in particular to a thermal management component, a battery module, a battery and an electrical device.

Background technique

Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

In battery technology, how to improve battery reliability is a technical problem that needs to be solved urgently.

Summary of the invention

The present application provides a thermal management component, a battery module, a battery and an electrical device. The thermal management component can effectively improve the thermal management effect of the battery, thereby effectively improving the reliability of the battery.

In a first aspect, the present application provides a thermal management component, including: a body, the interior of the body is provided with a cavity for accommodating a heat exchange medium, and the body is provided with an opening communicating with the cavity; and a manifold connected to the body and closing the opening.

In the technical solution of the present application, the busbar is connected to the body of the thermal management component, and the heat exchange medium contained in the cavity can directly contact the busbar, thereby effectively improving the temperature regulation effect of the thermal management component on the busbar. When the thermal management component is applied to a battery module or a battery, the busbar can be electrically connected to the battery cell. The busbar electrically connected to the battery cell can conduct the temperature of the battery cell faster, thereby effectively improving the temperature regulation effect of the thermal management component on the battery cell, thereby effectively improving the performance and reliability of the battery; at the same time, in some embodiments, the busbar can be connected to the electrode terminal of the battery cell. When the thermal management component is used to cool the battery cell (the heat exchange medium contained in the cavity is a cooling medium), the thermal management component can effectively reduce the temperature of the electrode terminal, thereby effectively alleviating the problem of overheating of the electrode terminal of the battery cell during the charging and discharging process and affecting the charging and discharging speed, thereby effectively improving the performance of the battery module or battery using the thermal management component.

According to some embodiments of the present application, a plurality of busbars and openings are provided, the busbars are provided corresponding to the openings, and each busbar closes the opening corresponding thereto.

In the above technical solution, the thermal management component is provided with a plurality of busbars, and each busbar can directly contact the heat exchange medium in the cavity through the opening, so as to effectively improve the applicability of the thermal management component, facilitate the thermal management component to be connected to a plurality of battery cells and used for temperature regulation of a plurality of battery cells, and at the same time, improve the adequacy of the thermal management component in regulating the temperature of the battery module or battery to which the thermal management component is applied, improve the temperature regulation effect, and thereby improve the reliability of the battery module or battery.

According to some embodiments of the present application, the cavity includes a main channel and a heat exchange cavity connected to the main channel, the opening is connected to the heat exchange cavity, and the manifold serves as a wall portion of the heat exchange cavity.

In the above technical scheme, the cavity in the main body includes a main channel and a heat exchange cavity connected to the main channel. The main channel is used to introduce heat exchange medium into the main body and ensure the fluidity of the heat exchange medium in the body. The setting of the heat exchange cavity can effectively improve the sufficiency of the contact between the heat exchange medium and the manifold, thereby further improving the temperature regulation effect of the thermal management component on the manifold, and improving the reliability of the battery module or battery using the thermal management component; at the same time, the cavity of the main body includes the main channel and the heat exchange cavity, which can effectively reduce the volume of the flow channel, thereby reducing the capacity of the heat exchange medium, which is conducive to the lightweight development of the battery module or battery.

According to some embodiments of the present application, a plurality of manifolds and heat exchange chambers are provided, and the plurality of heat exchange chambers are distributed at intervals on both sides of the main channel, and the manifolds and the heat exchange chambers are provided correspondingly.

In the above technical solution, multiple heat exchange chambers are spaced apart and distributed on opposite sides of the main channel, which can effectively improve the balance of the heat exchange medium entering the multiple heat exchange chambers from the main channel, thereby improving the heat exchange efficiency of multiple conduits, and further effectively improving the adequacy and reliability of the thermal management component in regulating the temperature of the battery module or battery to which the thermal management component is applied.

According to some embodiments of the present application, the cavity further includes a plurality of branch flow channels, and each heat exchange cavity is connected to the main flow channel through a branch flow channel.

In the above technical solution, each heat exchange chamber is connected to the main channel through a branch flow channel. Under the premise that the relative positions of multiple heat exchange chambers are certain, multiple heat exchange chambers are connected to the main channel through branch flow channels, which is conducive to further reducing the design size of the main channel, thereby further reducing the heat exchange medium content and reducing the overall weight of the thermal management component.

According to some embodiments of the present application, the cavity further includes a connecting flow channel, and two adjacent heat exchange chambers located on the same side of the main flow channel are connected through a connecting flow channel.

In the above technical solution, the heat exchange chambers located on the same side of the main channel are connected in sequence through connecting channels, which can further improve the fluidity of the heat exchange medium in each heat exchange chamber, facilitate improving the flow efficiency of the heat exchange medium in each heat exchange chamber, thereby effectively improving the heat exchange effect of the heat exchange medium on the manifold, and further improving the reliability of the battery module or battery using the thermal management component.

According to some embodiments of the present application, the thermal management component further includes: a first insulating member, disposed between the busbar and the body to achieve an insulated connection between the busbar and the body.

In the above technical solution, the first insulating member is arranged between the busbar and the body to insulate and isolate the busbar and the body, so as to prevent the body from being electrically charged due to the conduction between the body and the busbar, thereby preventing the possibility of short circuits in the battery modules or batteries using the thermal management component due to the conduction between the battery modules or batteries using the thermal management component, which is beneficial to further improve the reliability of the battery modules or batteries using the thermal management component. In addition, if the busbar and the body are insulated and isolated, the body can be made of a metal material with good thermal conductivity, thereby effectively improving the temperature regulation effect of the thermal management component, which is also beneficial to improve the reliability of the battery modules or batteries using the thermal management component.

According to some embodiments of the present application, the body includes a first heat conducting plate and a second heat conducting plate which are stacked, a cavity is formed between the first heat conducting plate and the second heat conducting plate, and an opening is arranged on the first heat conducting plate or the second heat conducting plate.

In the above technical solution, the main body is composed of a first heat conducting plate and a second heat conducting plate which are separately arranged, which is convenient for grouping battery modules or batteries to which the thermal management component is applied, and is beneficial for improving the stability and reliability of the electrical connection between the thermal management component and the battery module or battery to which the thermal management component is applied, thereby facilitating the reliability of the thermal management component in regulating the temperature of the battery cell, and further effectively improving the reliability of the battery module or battery to which the thermal management component is applied.

According to some embodiments of the present application, the first heat conducting plate has a first surface facing the second heat conducting plate, the first surface is provided with a first groove, and the second heat conducting plate has a second surface facing the first heat conducting plate, the second surface and the first groove together form a cavity.

In the above technical solution, after the first surface of the first heat conducting plate and the second surface of the second heat conducting plate are bonded together, the second surface covers the opening surface of the first groove on the first surface, so that the second surface and the first groove are combined to form a cavity, which can not only meet the requirements of separate settings of the first heat conducting plate and the second heat conducting plate, but also improve the sealing of the cavity after the main body is grouped.

According to some embodiments of the present application, a thermal management component is used for a battery module; the busbar includes a first busbar and a second busbar, the first busbar is used to achieve electrical connection between at least two battery cells in the battery module, and the second busbar is used to output electrical energy of the battery module; the opening includes a first opening and a second opening, the first busbar closes the first opening, and the second busbar closes the second opening.

In the above technical solution, the first busbar is used to realize the electrical connection between the battery cells in the battery module (in series, parallel or mixed connection), and the second busbar is used as the total output pole of the battery module to transmit the electric energy of the entire battery module, so as to realize the electrical connection and electric energy output of the battery module using the thermal management component. Both the first busbar and the second busbar can directly contact the heat exchange medium in the cavity, so that the thermal management component can fully adjust the temperature of each battery cell of the battery module, thereby effectively improving the reliability of the battery.

According to some embodiments of the present application, the second busbar includes: a main body portion closing the second opening; and an extension portion, one end of the extension portion is connected to the main body portion, and the other end extends out of the body.

In the above technical solution, the main body of the second busbar is used to close the second opening of the main body. The main body plays a good role in temperature conduction, which is convenient for temperature regulation of the battery cell connected to the main body; the extension portion extends out of the main body to form the total output pole of the battery module using the thermal management component to output the electrical energy of the battery module.

According to some embodiments of the present application, a through hole communicating with the cavity is provided on the body, and the extension portion extends out of the body from the through hole.

In the above technical solution, a through hole is provided on the main body, which facilitates the grouping of the second busbar and the main body and facilitates the connection operation of the second busbar.

According to some embodiments of the present application, the thermal management component further includes: a second insulating member, disposed between the extension portion and the inner wall of the through hole to achieve insulation between the extension portion and the body.

In the above technical solution, the second insulating member insulates and isolates the extension portion and the main body, which can reduce the possibility that the main body is electrically charged due to the conduction between the main body and the second busbar, thereby reducing the risk of short circuits in the battery module or battery cells using the thermal management component due to mutual conduction through the main body. It also reduces the possibility that the main body is electrically charged and connected to other components, thereby effectively improving the reliability of the battery module or battery.

According to some embodiments of the present application, the second insulating member is sleeved on the extension portion.

In the above technical solution, the second insulating member is sleeved on the extension part to form a sheath-type protection for the periphery of the extension part that may contact the inner wall of the through hole of the main body, thereby effectively improving the adequacy of the second insulating member in insulating and isolating the main body and the extension part.

According to some embodiments of the present application, the thermal management component further includes: a sealing member, which is disposed between the extension portion and the inner wall of the through hole to achieve a sealed connection between the extension portion and the body.

In the above technical solution, the seal is arranged between the extension part and the inner wall of the through hole, and the seal fills the gap between the extension part and the inner wall of the through hole, thereby reducing the risk of leakage of the heat exchange medium from between the extension part and the inner wall of the through hole, and further improving the sealing of the body.

According to some embodiments of the present application, the main body includes a first heat conducting plate and a second heat conducting plate arranged in a stacked manner, the first heat conducting plate having a first surface facing the second heat conducting plate, the first surface being provided with a first groove and a second groove, the second heat conducting plate having a second surface facing the first heat conducting plate, the second surface and the first groove together forming a cavity, and the second surface and the second groove together forming a through hole.

In the above technical solution, after the first surface of the first heat conducting plate and the second surface of the second heat conducting plate are bonded together, the second surface covers the opening surfaces of the first groove and the second groove on the first surface, so that the second surface and the first groove together form a cavity, and the second surface and the second groove together form a through hole, which can not only meet the requirements of separate settings of the first heat conducting plate and the second heat conducting plate, but also improve the sealing of the cavity after the main body is grouped and the convenience of installation of the extension part.

According to some embodiments of the present application, the second groove has a first groove side surface and a second groove side surface arranged opposite to each other, and the seal includes a first sealing portion, a second sealing portion and a third sealing portion, the first sealing portion is arranged between the first groove side surface and the extension portion, the second sealing portion is arranged between the second groove side surface and the extension portion, the third sealing portion is arranged between the second surface and the extension portion, and the third sealing portion connects the first sealing portion and the second sealing portion.

In the above technical solution, the sealing member can press the extension portion against the bottom wall of the second groove. At the same time, the first sealing portion, the second sealing portion and the third sealing portion completely fill the gap between the extension portion and the inner wall of the through hole, so that the main body and the extension portion are sealed to each other, thereby effectively improving the sealing of the cavity.

According to some embodiments of the present application, a third groove is provided on the first surface at two opposite sides of the second groove, and two ends of the third sealing portion are embedded in the third groove.

In the above technical solution, the first surface of the first heat conducting plate is provided with a third groove for accommodating the seal. The third groove accommodates and limits the seal, effectively improving the reliability of the seal after installation, thereby effectively improving the sealing effect of the seal.

According to some embodiments of the present application, the heat exchange medium is an insulating coolant.

In the above technical solution, the heat exchange medium is an insulating coolant, which prevents the heat exchange medium from being charged due to conduction between the heat exchange medium and the busbar, and at the same time reduces the possibility of the main body being charged due to conduction between the main body and the busbar. It can reduce the possibility of short circuit of battery cells caused by conduction between the busbars through the heat exchange medium, and further improve the reliability of the battery module or battery using the thermal management component.

In the second aspect, the present application also provides a battery module, including: a battery cell group, including a plurality of battery cells arranged in a stacked manner, the battery cell including a first wall and an electrode terminal arranged on the first wall; a thermal management component such as any of the above-mentioned schemes, the thermal management component is used to adjust the temperature of the battery cell, and the busbar is connected to the electrode terminal.

In the technical solution of the present application, the thermal management component can effectively regulate the temperature of the electrode terminals, and the electrode terminals are directly connected to the interior of the battery cell, so the temperature can be conducted faster, thereby effectively enhancing the temperature regulation effect of the thermal management component on the battery cell, and effectively improving the reliability of the battery; at the same time, since the busbar is connected to the electrode terminals of the battery cell, when the thermal management component is used to cool the battery cell (the heat exchange medium contained in the cavity is the cooling medium), the thermal management component can effectively reduce the temperature of the electrode terminals, effectively reduce the risk of overheating of the electrode terminals caused by the battery cell during the charging and discharging process, and thus effectively improve the reliability of the battery module.

According to some embodiments of the present application, the electrode terminal includes a positive terminal and a negative terminal arranged at intervals, and a convex portion is formed on the side of the body facing the battery cell group, and the convex portion abuts against the area of the first wall located between the positive terminal and the negative terminal.

In the above technical solution, the body of the thermal management component is formed with a convex portion. After the thermal management component is grouped with a battery cell, the convex portion is accommodated between the positive terminal and the negative terminal of the battery cell and abuts against the battery cell. The convex portion has a certain anti-expansion effect on the battery cell, which can reduce the expansion deformation generated during the use of the battery cell, which is beneficial to improving the performance of the battery module.

According to some embodiments of the present application, the electrode terminal includes a positive terminal and a negative terminal that are spaced apart, and a region of the first wall between the positive terminal and the negative terminal is connected to the thermal management component.

In the above technical solution, the thermal management component is connected to the battery cell, which is conducive to further improving the stability of the relative position of the thermal management component and the battery cell, thereby improving the stability of the overall structure of the battery module, and further improving the stability and reliability of the thermal management component's temperature regulation of the battery cell group, which is conducive to further improving the reliability of the battery module.

According to some embodiments of the present application, a region of the first wall located between the positive terminal and the negative terminal is bonded to the thermal management component by colloid.

In the above technical solution, the thermal management component is bonded to the battery cell, which has a simple process, reliable connection stability, and is convenient for assembling the battery module.

According to some embodiments of the present application, the cavity includes a main channel and a heat exchange chamber connected to the main channel, the opening is connected to the heat exchange chamber, and the manifold serves as a wall portion of the heat exchange chamber; along the thickness direction of the first wall, the projection of the main channel on the first wall is located between the positive terminal and the negative terminal.

In the above technical solution, the convex portion abuts against the battery cell, the main channel of the thermal management component corresponds to the convex portion, and the heat exchange medium in the main channel can exchange heat on the battery cell through the convex portion, further improving the temperature regulation effect of the thermal management component on the battery cell group, thereby further improving the reliability of the battery module.

In a third aspect, the present application also provides a battery, comprising a battery module as described in any of the above schemes.

In a fourth aspect, the present application also provides an electrical device, comprising the battery described in the above scheme, wherein the battery is used to provide electrical energy.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

FIG1 is a schematic diagram of a vehicle structure provided by some embodiments of the present application;

FIG2 is an exploded view of a battery provided in some embodiments of the present application;

FIG3 is an exploded view of a battery module provided in some embodiments of the present application;

FIG4 is an exploded view of a battery cell provided in some embodiments of the present application;

FIG5 is an exploded view of a thermal management component provided in some embodiments of the present application;

FIG6 is a schematic diagram of the structure of a first heat conducting plate of a thermal management component provided by some embodiments of the present application from a first perspective;

FIG7 is a front view of a first heat conducting plate of the heat management component shown in FIG6 ;

FIG8 is a schematic diagram of the structure of a first heat conducting plate of a thermal management component provided by some embodiments of the present application from a second perspective;

FIG9 is a partial enlarged view of the portion A shown in FIG6 ;

FIG10 is a partial enlarged view of portion B shown in FIG7 ;

FIG11 is a partial enlarged view of portion C shown in FIG8 ;

FIG12 is a side view of a thermal management component provided by some embodiments of the present application;

FIG. 13 is a partial side view of the thermal management component and the battery cell provided in some embodiments of the present application.

In the drawings, the drawings are not drawn to scale.

Marking instructions: 1000-vehicle; 100-battery; 10-battery module; 1-thermal management component; 11-body; 111-opening; 1111-first opening; 1112-second opening; 112-cavity; 1121-main channel; 1122-heat exchange cavity; 1123-branch channel; 1124-connecting channel; 1125-inlet; 113-first heat conducting plate; 1131-first surface; 1132-first groove; 1133-second groove; 11331-side of first groove; 11332-side of second groove; 11333-bottom of groove; 1134-third groove; 114-second heat conducting plate; 1141-second surface; 115-convex portion ;1151-third surface;116-through hole;12-bus;121-first bus;122-second bus;1221-main body;1222-extension;13-first insulating member;14-second insulating member;15-sealing member;151-first sealing portion;152-second sealing portion;153-third sealing portion;2-battery cell group;21-battery cell;211-first wall;212-electrode terminal;212a-positive terminal;212b-negative terminal;213-shell;214-cover;215-electrode assembly;20-casing;201-first part;202-second part;200-controller;300-motor.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or a signal connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. Among them, multiple battery cells can be directly connected in series, in parallel or in a mixed connection to form a battery. Mixed connection means that multiple battery cells are both connected in series and in parallel. Multiple battery cells can also be connected in series, in parallel or in a mixed connection to form a battery module, and multiple battery modules can be connected in series, in parallel or in a mixed connection to form a battery. The battery can also include a box for encapsulating one or more battery cells, and the box can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

The battery disclosed in the embodiments of the present application may be a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., but the embodiments of the present application are not limited thereto.

The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current can pass without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the isolation film can be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly can be a winding structure or a laminated structure, and the embodiments of the present application are not limited to this.

The development of battery technology must take into account many design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery reliability must also be considered.

The battery generates a lot of heat during the charging and discharging process, which will affect the battery performance and reliability.

In order to improve the performance and reliability of the battery, a thermal management component is installed at the bottom of the battery cell to regulate the temperature of the battery cell and remove the heat of the high-temperature battery cell by heat conduction. However, traditional thermal management components are increasingly unable to meet the development needs of batteries.

The applicant analyzed the reasons and found that as the market has higher and higher requirements for the charging speed of automotive power batteries, super-fast charging has become the mainstream design of power batteries in the future. Super-fast charging generates more heat during the charging process than conventional fast charging solutions, especially the electrode terminal part of the battery cell has the highest temperature during charging and discharging. Conventional bottom liquid cooling solutions have been unable to cool down the heat generated by super-fast charging of batteries.

In order to effectively improve the thermal management effect of the battery, in some cases, additional cooling pipes or cooling plates are added to the sides and top of the battery pack to remove the heat of the battery cells. However, this solution can remove a limited amount of battery heat. Further analysis of the reasons found that there are usually multiple layers of structure between the cooling plate set on the top and the electrode terminals of the battery cells, such as adhesives, support frames, thermal conductive layers, etc. Such a structure makes it possible for multiple layers of medium to exist between the coolant and the battery cells, which seriously affects the heat exchange efficiency and timeliness of the thermal management components.

Based on the above reasons, the applicant has designed a thermal management component after in-depth research. The thermal management component includes a main body and a manifold. The interior of the main body is provided with a cavity for accommodating a heat exchange medium. The main body is provided with an opening connected to the cavity. The manifold is connected to the main body and closes the opening.

In the technical solution of the present application, the busbar is connected to the body of the thermal management component, and the heat exchange medium contained in the cavity can be in direct contact with the busbar, thereby effectively improving the temperature regulation effect of the thermal management component on the busbar. When the thermal management component is applied to a battery module or a battery, the busbar can be electrically connected to the battery cell. The busbar electrically connected to the battery cell can conduct the temperature of the battery cell faster, thereby effectively improving the temperature regulation effect of the thermal management component on the battery cell, thereby effectively improving the reliability of the battery; at the same time, in some embodiments, the busbar can be connected to the electrode terminal of the battery cell. When the thermal management component is used to cool the battery cell (the heat exchange medium contained in the cavity is a cooling medium), the thermal management component can effectively reduce the temperature of the electrode terminal, thereby effectively alleviating the problem of overheating of the electrode terminal during the charging and discharging process of the battery cell and affecting the charging and discharging speed, thereby effectively improving the performance of the battery module or battery using the thermal management component.

The thermal management component is used to accommodate a heat exchange medium to adjust the temperature of multiple battery cells. The heat exchange medium here can be a liquid or a gas, and adjusting the temperature means heating or cooling multiple battery cells. In the case of cooling or lowering the temperature of the battery cells, the thermal management component is used to accommodate a cooling medium to lower the temperature of multiple battery cells. At this time, the thermal management component can also be called a cooling component, a cooling system or a cooling plate, etc., and the heat exchange medium it accommodates can also be called a cooling medium, more specifically, it can be called a coolant or a cooling gas. In addition, the thermal management component can also be used for heating to increase the temperature of multiple battery cells, which is not limited in the embodiments of the present application.

The busbar can be used to achieve electrical connection between multiple battery cells, such as parallel connection, series connection or mixed connection. Specifically, the busbar can achieve electrical connection between battery cells by connecting the electrode terminals of the battery cells. The busbar used to achieve electrical connection between battery cells can also be called a busbar, a busbar, a busbar, etc. The electrical energy of multiple battery cells can be further led out through the output pole, and the output pole can also belong to the busbar. In other words, the busbar can include a busbar for achieving electrical connection between battery cells and an output pole for outputting the electrical energy of multiple battery cells. Usually, the output pole includes two, a positive output pole and a negative output pole.

The thermal management component disclosed in the embodiments of the present application can be applied to the thermal management of battery modules or batteries. It can be used to heat or cool the battery modules or batteries to which the thermal management component is applied.

The battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. The battery disclosed in the present application can be used to form a power supply system of the electrical device.

The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

The battery described in the embodiments of the present application is not limited to the electrical devices described above, but can also be applied to all electrical devices using batteries. However, for the sake of simplicity, the following embodiments are described using an electrical device such as a vehicle as an example.

Please refer to Figure 1, which is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for the starting, navigation and driving power requirements of the vehicle 1000.

In some other embodiments, the battery 100 can be used not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

Please refer to FIG. 2 and FIG. 3. FIG. 2 is an exploded view of a battery provided in some embodiments of the present application; FIG. 3 is an exploded view of a battery module provided in some embodiments of the present application; the battery 100 may include a box 20 and a plurality of battery cells 21, the battery cells 21 are contained in the box 20, and the box 20 may adopt a variety of structures. In some embodiments, the box 20 may include a first part 201 and a second part 202, the first part 201 and the second part 202 cover each other, and the first part 201 and the second part 202 jointly define a storage space for accommodating the battery cells 21. The second part 202 may be a hollow structure with one end open, the first part 201 may be a plate-like structure, the first part 201 covers the open side of the second part 202, so that the first part 201 and the second part 202 jointly define a storage space; the first part 201 and the second part 202 may also be hollow structures with one side open, and the open side of the first part 201 covers the open side of the second part 202. Of course, the box body 20 formed by the first part 201 and the second part 202 can be in various shapes, such as a cuboid, a cube, etc.

The number of battery cells 21 can be set to any value. Multiple battery cells 21 can be connected in series, parallel or mixed to achieve a larger capacity or power. Since the number of battery cells 21 included in each battery 100 may be large, for ease of installation, the battery cells 21 can be grouped, and each group of battery cells constitutes a battery module 10. The number of battery cells 21 included in the battery module 10 is not limited and can be set according to demand. The battery 100 may include one battery module 10, and the battery 100 may also include multiple battery modules 10, and the multiple battery modules 10 may be connected in series, parallel or mixed.

The battery 100 further includes a thermal management component 1, which is used to adjust the temperature of the battery cell 21. The thermal management component 1 can be used to heat the battery cell 21 to increase its temperature, or to cool the battery cell 21 to reduce its temperature.

As shown in FIG. 4 , FIG. 4 is an exploded view of a battery cell provided in some embodiments of the present application; the battery cell 21 may include one or more electrode assemblies 215 and a shell, and the electrode assembly 215 is accommodated in the shell. The shell may have a variety of implementation structures, for example, the shell may include a shell 213 and a cover 214. The shell 213 is determined according to the shape of the one or more electrode assemblies 215 after being combined. For example, the shell 213 may be a hollow cuboid, a cube, or a cylinder, etc., and one of the faces of the shell 213 has an opening so that one or more electrode assemblies 215 can be placed in the shell 213. The cover 214 is used to cover the shell 213. The shell 213 and the cover 214 together form a closed cavity for placing the electrode assembly 215. The shell 213 is also filled with electrolyte.

The battery cell 21 may further include two electrode terminals 212 , which may be disposed on the cover 214 . The two electrode terminals 212 are respectively a positive terminal 212 a and a negative terminal 212 b . Each electrode terminal 212 is electrically connected to the electrode assembly 215 .

Please refer to Figures 3 to 8, Figure 5 is an exploded view of a thermal management component provided in some embodiments of the present application; Figure 6 is a first-perspective structural diagram of a first heat-conducting plate of a thermal management component provided in some embodiments of the present application; Figure 7 is a front view of the first heat-conducting plate of the thermal management component shown in Figure 6; Figure 8 is a second-perspective structural diagram of the first heat-conducting plate of a thermal management component provided in some embodiments of the present application. Some embodiments of the present application provide a thermal management component 1, the thermal management component 1 includes a body 11 and a manifold 12, the body 11 is provided with a cavity 112 for accommodating a heat exchange medium, the body 11 is provided with an opening 111 connected to the cavity 112; the manifold 12 is connected to the body 11 and closes the opening 111.

As mentioned above, the busbar 12 can be used to achieve electrical connection between multiple battery cells 21, such as parallel connection, series connection or mixed connection. Specifically, the busbar 12 can achieve electrical connection between the battery cells 21 by connecting the electrode terminals 212 of the battery cells 21. The busbar 12 used to achieve electrical connection between the battery cells 21 can also be called a bar, a bus bar, a bus bar, etc. The busbar 12 may also include an output pole for outputting electrical energy of multiple battery cells 21. That is, the busbar 12 may include a barbar for achieving electrical connection between the battery cells 21 and an output pole for outputting electrical energy of multiple battery cells 21. In some embodiments, the busbar 12 of the thermal management component 1 may include only a barbar. In other embodiments, the busbar 12 of the thermal management component 1 may include only an output pole. Alternatively, the busbar 12 of the thermal management component 1 may include both a barbar and an output pole.

The busbar 12 closes the opening 111 on the main body 11, and the opening 111 is connected to the heat exchange cavity 1122 in the main body 11. The portion of the busbar 12 that blocks the opening 111 can directly contact the heat exchange medium in the cavity 112, and the heat exchange medium can exchange heat with the busbar 12 electrically connected to the battery cell 21 to directly adjust the temperature of the busbar 12. The busbar 12 can conduct temperature to the battery cell 21 more quickly, so that the thermal management component 1 can adjust the temperature of the battery cell 21, especially the temperature of the electrode terminal 212 of the battery cell 21.

As mentioned above, the heat exchange medium can be a liquid or a gas, and adjusting the temperature means heating or cooling the multiple battery cells 21. In the case of cooling or lowering the temperature of the battery cells 21, the thermal management component 1 is used to accommodate the cooling medium to lower the temperature of the multiple battery cells 21. At this time, the thermal management component 1 can also be called a cooling component, a cooling system or a cooling plate, etc., and the heat exchange medium contained therein can also be called a cooling medium, more specifically, a coolant or a cooling gas. In addition, the thermal management component 1 can also be used for heating to increase the temperature of the multiple battery cells 21. Among them, the heat exchange medium can be circulated to achieve a better temperature regulation effect.

It can be understood that since the main body 11 is connected to the bus 12, the bus 12 is electrically connected to the battery cell 21 and is in direct contact with the heat exchange medium in the cavity 112. In order to prevent a short circuit between the bus 12 or between the bus 12 and the main body 11 due to conduction through the heat exchange medium, the heat exchange medium can be an insulating gas such as air, or an insulating heat exchange medium such as fluorinated liquid and oil.

At the same time, the body 11 is used to carry the heat exchange medium, and the body 11 can be made of an insulating material with good thermal conductivity, or a metal with good thermal conductivity, such as aluminum, copper, etc. It can be understood that when the body 11 is made of a conductive metal material, in order to prevent the body 11 and the insulating member from being electrically connected to each other, the body 11 and the busbar 12 can be insulated.

The heat exchange medium contained in the cavity 112 can be in direct contact with the busbar 12, thereby effectively improving the temperature regulation effect of the thermal management component 1 on the busbar 12. When the thermal management component 1 is applied to the battery module 10 or the battery 100, the busbar 12 can be electrically connected to the battery cell 21. The busbar 12 electrically connected to the battery cell 21 can conduct the temperature of the battery cell 21 more quickly, thereby effectively improving the temperature regulation effect of the thermal management component 1 on the battery cell 21, thereby effectively improving the reliability of the battery 100; at the same time, when the thermal management component 1 is used to cool the battery cell 21 (the heat exchange medium contained in the cavity 112 is a cooling medium), the thermal management component 1 can effectively reduce the temperature of the electrode terminal 212 of the battery cell 21, thereby effectively alleviating the problem of overheating of the electrode terminal during the charging and discharging process of the battery cell affecting the charging and discharging speed, thereby effectively improving the performance of the battery module or battery using the thermal management component.

According to some embodiments of the present application, as shown in FIG. 5 and FIG. 6 , a plurality of busbars 12 and openings 111 are provided, and the busbars 12 are provided corresponding to the openings 111 , and each busbar 12 closes the opening 111 corresponding thereto.

Specifically, the number of the busbars 12 can be set according to the number of the battery cells 21. When the number of the battery cells 21 is large, two, three or even more busbars 12 can be set. Corresponding to the number of busbars 12, two, three or even more openings 111 of the body 11 can also be set. The positions of the openings 111 on the body 11 correspond to the busbars 12 one by one. Each busbar 12 corresponds to closing one opening 111. All busbars 12 can contact the heat exchange medium contained in the cavity 112.

Each busbar 12 can directly contact the heat exchange medium in the cavity 112 through the opening 111, which effectively improves the applicability of the thermal management component 1, facilitates the thermal management component 1 to be connected to multiple battery cells 21 and used for temperature regulation of multiple battery cells 21. At the same time, it improves the adequacy of the thermal management component 1 in regulating the temperature of the battery module 10 or battery 100 to which the thermal management component 1 is applied, improves the temperature regulation effect, and thereby improves the reliability of the battery module 10 or battery 100.

According to some embodiments of the present application, as shown in FIG. 6 , the cavity 112 includes a main channel 1121 and a heat exchange cavity 1122 communicating with the main channel 1121 , the opening 111 communicates with the heat exchange cavity 1122 , and the manifold 12 serves as a wall portion of the heat exchange cavity 1122 .

As mentioned above, the heat exchange medium in the cavity 112 can be circulated to achieve a better temperature regulation effect. The body 11 may also include an inlet 1125 connected to the main channel 1121, and the inlet 1125 is used to introduce the heat exchange medium into the main channel 1121. The main channel 1121 is connected to the heat exchange cavity 1122. The heat exchange medium entering the main channel 1121 can circulate in the main channel 1121 and enter the heat exchange cavity 1122.

In some embodiments, the body 11 may further include an outlet connected to the main channel 1121, the outlet being used to discharge the heat exchange medium in the cavity 112 so that the heat exchange medium in the body 11 can flow. Optionally, the inlet 1125 and the outlet may be connected to each other so that the heat exchange medium can circulate.

The opening 111 is connected to the heat exchange chamber 1122, which means that the opening 111 is arranged at a position of the main body 11 corresponding to the heat exchange chamber 1122, and the manifold 12 closes the opening 111. The manifold 12 forms a wall of the heat exchange chamber 1122, and the side of the manifold 12 facing the heat exchange chamber 1122 can contact the heat exchange medium in the heat exchange chamber 1122.

The main channel 1121 is used to introduce heat exchange medium into the main body 11 and ensure the fluidity of the heat exchange medium in the main body 11. The setting of the heat exchange cavity 1122 can effectively improve the sufficiency of the contact between the heat exchange medium and the manifold 12, thereby further improving the temperature regulation effect of the thermal management component 1 on the manifold 12, and improving the reliability of the battery module 10 or battery 100 using the thermal management component 1; at the same time, the cavity 112 of the main body 11 includes the main channel 1121 and the heat exchange cavity 1122, which can effectively reduce the overall flow channel volume, thereby reducing the heat exchange medium capacity in the main body 11, which is beneficial to the lightweight development of the battery module 10 or battery 100.

According to some embodiments of the present application, as shown in FIG. 6 , a plurality of the manifolds 12 and the heat exchange chambers 1122 are provided, and the plurality of heat exchange chambers 1122 are distributed at intervals on both sides of the main channel 1121 , and the manifolds 12 and the heat exchange chambers 1122 are provided correspondingly.

Specifically, two, three or even more confluence pieces 12 and heat exchange chambers 1122 can be provided, and the number of confluence pieces 12 and heat exchange chambers 1122 is equal and one-to-one corresponding, and all heat exchange chambers 1122 can be distributed on both sides of the main channel 1121 in equal or unequal amounts, and any two adjacent heat exchange chambers 1122 are distributed at intervals. The heat exchange medium in each heat exchange chamber 1122 can contact one confluence piece 12.

As shown in FIG. 6 , the heat exchange medium can flow in the main channel 1121 along the Y direction shown in the figure, and multiple heat exchange chambers 1122 can be arranged on opposite sides of the main channel 1121 along the X direction. The X direction and the Y direction can be perpendicular to each other, and the multiple heat exchange chambers 1122 located on the same side of the main channel 1121 can be arranged at intervals along the Y direction.

The multiple heat exchange chambers 1122 are spaced apart and distributed on opposite sides of the main channel 1121, which can effectively improve the balance of the heat exchange medium entering the multiple heat exchange chambers 1122 from the main channel 1121, thereby improving the heat exchange efficiency of the multiple conduits, and further effectively improving the adequacy and reliability of the thermal management component 1 in regulating the temperature of the battery module 10 or battery 100 to which the thermal management component 1 is applied.

According to some embodiments of the present application, as shown in FIG. 6 , the cavity 112 further includes a plurality of branch flow channels 1123 , and each heat exchange cavity 1122 is connected to the main flow channel 1121 via a branch flow channel 1123 .

That is, the number of the branch flow channels 1123 is equal to the number of the heat exchange chambers 1122 and corresponds one to one, and one end of the branch flow channel is connected to the main flow channel 1121, and the other end is connected to the heat exchange chamber 1122.

Each heat exchange chamber 1122 is connected to the main channel 1121 through a branch channel 1123. Under the premise that the relative positions of the multiple heat exchange chambers 1122 are constant, the multiple heat exchange chambers 1122 are connected to the main channel 1121 through the branch channel 1123, which is conducive to further reducing the design size of the main channel 1121, thereby further reducing the heat exchange medium content and reducing the overall weight of the thermal management component 1.

According to some embodiments of the present application, as shown in FIG. 6 , the cavity 112 further includes a connecting flow channel 1124 , and two adjacent heat exchange cavities 1122 located on the same side of the main flow channel 1121 are connected via a connecting flow channel 1124 .

That is to say, any two adjacent heat exchange chambers 1122 located on the same side of the main channel 1121 can be connected through a connecting channel 1124, so that the heat exchange chambers 1122 on the same side of the main channel 1121 can be connected to each other.

Such a configuration can further improve the fluidity of the heat exchange medium in each heat exchange cavity 1122, thereby facilitating improving the flow efficiency of the heat exchange medium in each heat exchange cavity 1122, thereby effectively improving the heat exchange effect of the heat exchange medium on the manifold 12, and further improving the reliability of the battery module 10 or battery 100 using the thermal management component 1.

According to some embodiments of the present application, as shown in FIGS. 5 to 7 , the thermal management component 1 further includes a first insulating member 13 , which is disposed between the bus 12 and the body 11 to achieve an insulated connection between the bus 12 and the body 11 .

Specifically, the busbar 12 closes the opening 111 of the body 11 and is connected to the body 11, and a first insulating member 13 is provided between the busbar 12 and the body 11 to insulate and isolate the busbar 12 from the body 11. There are many implementation structures of the first insulating member 13, for example, the first insulating member 13 can be a separately provided sealing ring structure, and the first insulating member 13 is clamped to the inner circumference of the opening 111 of the body 11 or the outer circumference of the busbar 12 to insulate and isolate the busbar 12 from the inner wall of the opening 111.

The first insulating member 13 can effectively reduce the possibility that the body 11 is electrically connected to the busbar 12, thereby reducing the problem of short circuits caused by the battery cells 21 of the battery module 10 or battery 100 using the thermal management component 1 being connected to each other through the body 11, which is conducive to further improving the reliability of the battery module 10 or battery 100 using the thermal management component 1. In addition, the busbar 12 and the body 11 are insulated and isolated, and the body 11 can be made of a metal material with good thermal conductivity, thereby effectively improving the temperature regulation effect of the thermal management component 1, which is also conducive to improving the reliability of the battery module 10 or battery 100 using the thermal management component 1.

In some embodiments, the first insulating member 13 can be injection molded between the body 11 and the busbar 12, that is, the body 11 and the busbar 12 can be connected to each other by injection molding, and injection molding is performed between the inner circumference of the opening 111 of the body 11 and the outer circumference of the busbar 12, so that the body 11 is connected to the busbar 12 and the busbar 12 closes the opening 111. At the same time, the injection molding material between the body 11 and the busbar 12 forms the above-mentioned first insulating member 13. In this way, the first insulating member 13 can not only insulate and isolate the body 11 and the busbar 12, but also improve the connection reliability between the busbar 12 and the body 11. At the same time, the first insulating member 13 can effectively improve the sealing of the connection between the body 11 and the busbar 12 by using the injection molding process, reduce the risk of leakage of the heat exchange medium between the body 11 and the busbar 12, and further improve the structural stability of the thermal management component 1.

According to some embodiments of the present application, as shown in Figure 5, the body 11 includes a first heat conducting plate 113 and a second heat conducting plate 114 which are stacked, a cavity 112 is formed between the first heat conducting plate 113 and the second heat conducting plate 114, and an opening 111 is provided on the first heat conducting plate 113 or the second heat conducting plate 114.

The first heat conducting plate 113 and the second heat conducting plate 114 can be connected to each other by bonding, welding, riveting, etc., and the cavity 112 is formed between the connected first heat conducting plate 113 and the second heat conducting plate 114. The opening 111 can be provided on the first heat conducting plate 113 or the second heat conducting plate 114, and the opening 111 is connected to the cavity 112.

It is understandable that there are many ways to form the cavity 112. Specifically, the first heat conducting plate 113 can be a plate structure with a groove on one side, and the second heat conducting plate 114 can be a solid plate structure. The second heat conducting plate 114 covers the surface of the first heat conducting plate 113 with the groove to form the cavity 112 between the first heat conducting plate 113 and the second heat conducting plate 114. The first heat conducting plate 113 and the second heat conducting plate 114 can also both be plate structures with a groove on one side, and the surface of the first heat conducting plate 113 with the groove and the surface of the second heat conducting plate 114 with the groove fit together to form the cavity 112 between the first heat conducting plate 113 and the second heat conducting plate 114.

The first heat conducting plate 113 and the second heat conducting plate 114 may be in various shapes, such as a rectangular shape, a square shape, etc. The shapes of the first heat conducting plate 113 and the second heat conducting plate 114 may be the same or different.

During the actual assembly operation, the first heat conducting plate 113 or the second heat conducting plate 114 connected to the busbar 12 can be installed in place with the battery module 10 or the battery 100, and the busbar 12 can be connected to the battery cell 21 accordingly, and then the first heat conducting plate 113 and the second heat conducting plate 114 can be connected to each other to form a cavity 112.

The main body 11 is composed of a first heat conducting plate 113 and a second heat conducting plate 114 which are separately arranged, so as to facilitate the grouping of battery modules 10 or batteries 100 to which the thermal management component 1 is applied, and is beneficial to improving the stability and reliability of the electrical connection between the thermal management component 1 and the battery module 10 or battery 100 to which the thermal management component 1 is applied, thereby facilitating the reliability of the thermal management component 1 in regulating the temperature of the battery cell 21, and further effectively improving the reliability of the battery module 10 or battery 100 to which the thermal management component 1 is applied.

According to some embodiments of the present application, as shown in Figure 5, the first heat conducting plate 113 has a first surface 1131 facing the second heat conducting plate 114, the first surface 1131 is provided with a first groove 1132, the second heat conducting plate 114 has a second surface 1141 facing the first heat conducting plate 113, and the second surface 1141 and the first groove 1132 together form a cavity 112.

That is, after the first heat conducting plate 113 and the second heat conducting plate 114 are stacked, the first surface 1131 and the second surface 1141 fit each other, and the area of the second surface 1141 covering the opening 111 of the first groove 1132 and the first groove 1132 together form a cavity 112 .

The extension shape of the first groove 1132 on the first surface 1131 is determined according to the shape of the cavity 112. For example, based on the implementation form of "the cavity 112 includes a main channel 1121 and a heat exchange chamber 1122 connected to the main channel 1121", the first groove 1132 may also include a first sub-groove and a second sub-groove that are connected to each other. After the first heat conducting plate 113 and the second heat conducting plate 114 are stacked, the first surface 1131 and the second surface 1141 fit each other, the second surface 1141 and the first sub-groove form the main channel 1121, and the second surface 1141 and the second sub-groove form the heat exchange chamber 1122.

It is understandable that the opening 111 can be set on the first heat conducting plate 113 and communicate with the first groove 1132 , or the opening 111 can be set on the second heat conducting plate 114 and extend to the second surface 1141 . Exemplarily, the opening 111 is set on the first heat conducting plate 113 and communicates with the first groove 1132 .

After the first surface 1131 of the first heat conducting plate 113 and the second surface 1141 of the second heat conducting plate 114 are fitted together, the second surface 1141 covers the opening 111 of the first groove 1132 on the first surface 1131, so that the second surface 1141 and the first groove 1132 are combined to form a cavity 112, which can not only meet the requirement of separate arrangement of the first heat conducting plate 113 and the second heat conducting plate 114, but also improve the sealing performance of the cavity 112 after the body 11 is grouped.

According to some embodiments of the present application, please continue to refer to Figures 5 to 11, Figure 9 is a partial enlarged view of part A shown in Figure 6; Figure 10 is a partial enlarged view of part B shown in Figure 7; Figure 11 is a partial enlarged view of part C shown in Figure 8; the thermal management component 1 is used for the battery module 10; the bus 12 includes a first bus 121 and a second bus 122, the first bus 121 is used to realize the electrical connection of at least two battery cells 21 in the battery module 10, and the second bus 122 is used to output the electrical energy of the battery module 10; the opening 111 includes a first opening 1111 and a second opening 1112, the first bus 121 closes the first opening 1111, and the second bus 122 closes the second opening 1112.

As mentioned above, the busbar 12 may include a bar for realizing electrical connection between battery cells 21 and an output pole for outputting the electrical energy of multiple battery cells 21. The bar is the first busbar 121 mentioned above, and the first busbar 121 may also be called a bus bar, a bus bar, etc. The output pole is the second busbar 122 mentioned above. Because the output pole generally includes a positive output pole and a negative output pole, two second busbars 122 may be provided, one of which forms a positive output pole and the other forms a negative output pole.

The opening 111 of the body 11 includes a first opening 1111 and a second opening 1112 . The first conduit 121 closes the first opening 1111 , and the second conduit 122 closes the second opening 1112 . Both the first conduit 121 and the second conduit 122 can contact the heat exchange medium contained in the cavity 112 .

Among them, the cross-sectional size of the first busbar 121 can be larger than the size of the opening 111 of the first opening 1111, the first busbar 121 completely covers the first opening 1111 and is connected to the body 11, and the cross-sectional size of the first busbar 121 can also be adapted to the size of the opening 111 of the first opening 1111. Similarly, the cross-sectional size of the second busbar 122 can be larger than the size of the opening 111 of the second opening 1112, the second busbar 122 completely covers the second opening 1112 and is connected to the body 11, and the cross-sectional size of the second busbar 122 can also be adapted to the size of the opening 111 of the second opening 1112.

The first busbar 121 is used to realize the electrical connection between each battery cell 21 (can be connected in series, in parallel or in mixed connection), and the second busbar 122 is used to transmit the total electric energy of the multiple battery cells 21 connected to each other, so as to realize the electrical connection and electric energy output of the battery module 10 using the thermal management component 1. Both the first busbar 121 and the second busbar 122 can directly contact the heat exchange medium in the cavity 112, so that the thermal management component 1 can fully adjust the temperature of each battery cell 21 of the battery module 10, thereby effectively improving the reliability of the battery.

According to some embodiments of the present application, referring to FIGS. 9 to 11 , the second current collector 122 includes a main body 1221 and an extension 1222 , wherein the main body 1221 closes the second opening 1112 . One end of the extension 1222 is connected to the main body 1221 , and the other end extends out of the body 11 .

The main body 1221 and the extension portion 1222 may be integrally formed, or may be separately provided and connected to each other by bonding, welding, or the like.

The main body 1221 closes the second opening 1112. The main body 1221 can be roughly plate-shaped. The large surface area of the main body 1221 can be adapted to the surface area of the opening 111 of the second opening 1112 to close the second opening 1112. Of course, the large surface area of the main body 1221 can also be larger than the surface area of the opening 111 of the second opening 1112. The main body 1221 completely covers the second opening 1112 and is connected to the body 11.

The extension part 1222 can be connected to any position of the main body 1221, and the extension part 1222 can be roughly in the shape of a sheet, a column, or any other shape. Exemplarily, as shown in FIG9 and FIG11, the extension part 1222 is roughly in a strip structure, one end of the extension part 1222 in the length direction is connected to the side surface of the extension part 1222 facing the cavity 112, and the other end of the extension part 1222 in the length direction extends out of the main body 11, and serves as the output pole of the battery module 10 or the overall battery 100.

The main body 1221 of the second busbar 122 is used to close the second opening 1112 of the main body 11. The main body 1221 has a good temperature conduction effect, which is convenient for temperature regulation of the battery cell 21 connected to the main body 1221; the extension portion 1222 extends out of the main body 11 to form the total output pole of the battery module 10 using the thermal management component 1 to output the electrical energy of the battery module 10.

According to some embodiments of the present application, please continue to refer to Figures 9 to 11, and further refer to Figure 12, which is a side view of a thermal management component provided in some embodiments of the present application; a through hole 116 communicating with the cavity 112 is provided on the main body 11, and an extension portion 1222 extends out of the main body 11 from the through hole 116.

It can be understood that the through hole 116 connects the cavity 112 and the external environment of the main body 11. The through hole 116 can be set at a position of the main body 11 close to the second collector 122. Specifically, the through hole 116 can be set at a position of the main body 11 opposite to the extension portion 1222 to facilitate the extension portion 1222 to extend from the through hole 116.

The shape of the through hole 116 can have a variety of implementation structures, and the shape of the through hole 116 can be the same as or different from the cross-sectional shape of the extension portion 1222 extending out of the through hole 116. The through hole 116 is provided on the body 11 to facilitate the grouping of the second busbar 122 and the body 11 and the connection operation of the second busbar 122.

According to some embodiments of the present application, please continue to refer to Figure 5 and further refer to Figures 9 to 12. The thermal management component 1 also includes a second insulating member 14, which is arranged between the extension portion 1222 and the inner wall of the through hole 116 to achieve insulation between the extension portion 1222 and the main body 11.

The second insulating member 14 can be connected to the body 11 and covered on the inner wall of the through hole 116. The second insulating member 14 can also be arranged on the extension portion 1222 and wrapped around the outer periphery of the extension portion 1222. In some embodiments, the second insulating member 14 can be an independent structure arranged separately, and the material of the second insulating member 14 can be a conventional insulating material such as silicone and rubber. In other embodiments, the second insulating member 14 can also be an insulating coating layer coated on the inner wall of the through hole 116 of the body 11 or the outer periphery of the extension portion 1222.

The second insulating member 14 may be disposed only at a position where the inner wall of the through hole 116 contacts the extending portion 1222 , and the second insulating member 14 may also extend along the circumference of the extending portion 1222 to form a closed loop structure.

The second insulating member 14 insulates and isolates the extension portion 1222 and the main body 11, which can effectively reduce the possibility that the main body 11 is electrically connected to the second bus member 122, thereby reducing the risk of short circuits caused by the battery cells 21 of the battery module 10 or battery 100 using the thermal management component 1 being electrically connected to each other through the main body 11, and also reduces the possibility that the main body 11 is electrically connected to other components, thereby effectively improving the reliability of the battery module 10 or battery 100.

According to some embodiments of the present application, as shown in FIG. 9 and FIG. 11 , the second insulating member 14 is sleeved on the extending portion 1222 .

Specifically, the second insulating member 14 may be a sleeve-like structure, and the second insulating member 14 is sleeved on the extension portion 1222 . The axial length of the second insulating member 14 may be slightly larger than the axial length of the through hole 116 , thereby effectively insulating the inner wall of the through hole 116 and the outer periphery of the extension portion 1222 .

In the above technical solution, the second insulating member 14 is sleeved on the extension portion 1222 to form a sheath-type protection for the outer periphery of the extension portion 1222 that may contact the inner wall of the through hole 116 of the main body 11, thereby effectively improving the adequacy of the second insulating member 14 in insulating and isolating the main body 11 and the extension portion 1222.

According to some embodiments of the present application, please continue to refer to Figure 5 and further refer to Figures 9 to 11. The thermal management component 1 also includes a seal 15, which is arranged between the extension portion 1222 and the inner wall of the through hole 116 to achieve a sealed connection between the extension portion 1222 and the body 11.

It can be understood that the seal 15 can surround the extension portion 1222 along the circumference of the extension portion 1222 (that is, the seal 15 is roughly annular in structure), the seal 15 limits the extension portion 1222 to a position close to the center of the through hole 116, and the seal 15 fills the gap between the outer periphery of the extension portion 1222 and the inner wall of the through hole 116, so that the extension portion 1222 is sealed and connected to the main body 11.

Of course, the seal 15 may not extend along the circumferential direction of the extension portion 1222. A portion of the outer circumferential surface of the extension portion 1222 abuts against a partial area of the inner wall of the through hole 116, and the seal 15 fills the remaining gap between the extension portion 1222 and the inner wall of the through hole 116, thereby sealing the extension portion 1222 and the main body 11.

Based on the implementation form of “the thermal management component 1 further includes a second insulating member 14 , and the second insulating member 14 is sleeved on the extension portion 1222 ”, the sealing member 15 can be disposed between the second insulating member 14 and the inner wall of the through hole 116 .

The seal 15 is disposed between the extension portion 1222 and the inner wall of the through hole 116 , and the seal 15 can fill the gap between the extension portion 1222 and the inner wall of the through hole 116 , thereby reducing the risk of leakage of the heat exchange medium from between the extension portion 1222 and the inner wall of the through hole 116 , and further improving the sealing of the body 11 .

According to some embodiments of the present application, in combination with Figures 5 to 12, the body 11 includes a first heat conducting plate 113 and a second heat conducting plate 114 which are stacked, the first heat conducting plate 113 having a first surface 1131 facing the second heat conducting plate 114, the first surface 1131 being provided with a first groove 1132 and a second groove 1133, the second heat conducting plate 114 having a second surface 1141 facing the first heat conducting plate 113, the second surface 1141 and the first groove 1132 together form a cavity 112, and the second surface 1141 and the second groove 1133 together form a through hole 116.

That is to say, after the first heat conducting plate 113 and the second heat conducting plate 114 are stacked, the first surface 1131 and the second surface 1141 fit together with each other, the area of the second surface 1141 covering the opening 111 of the first groove 1132 and the first groove 1132 together form a cavity 112, and the area of the second surface 1141 covering the opening 111 of the second groove 1133 and the second groove 1133 together form a through hole 116.

Specifically, the second groove 1133 connects the cavity 112 and the external environment of the main body 11. In the implementation form of "the cavity 112 includes a main channel 1121 and a heat exchange cavity 1122 connected to the main channel 1121", the second groove 1133 connects the heat exchange cavity 1122 where the second opening 1112 is located and the external environment of the main body 11. The main body 11 portion of the second conduit 122 closes the second opening 1112 to form a wall portion of the heat exchange cavity 1122, and the extension portion 1222 can extend out of the main body 11 through the second groove 1133.

After the first surface 1131 of the first heat conducting plate 113 and the second surface 1141 of the second heat conducting plate 114 are fitted together, the second surface 1141 covers the first groove 1132 and the opening 111 of the second groove 1133 on the first surface 1131, so that the second surface 1141 and the first groove 1132 together form a cavity 112, and the second surface 1141 and the second groove 1133 together form a through hole 116, which can not only meet the requirements of separate settings of the first heat conducting plate 113 and the second heat conducting plate 114, but also improve the sealing of the cavity 112 after the body 11 is grouped and the convenience of installation of the extension part 1222.

According to some embodiments of the present application, as shown in Figure 11, the second groove 1133 has a first groove side 11331 and a second groove side 11332 that are relatively arranged, and the seal 15 includes a first sealing portion 151, a second sealing portion 152 and a third sealing portion 153, the first sealing portion 151 is arranged between the first groove side 11331 and the extension portion 1222, the second sealing portion 152 is arranged between the second groove side 11332 and the extension portion 1222, the third sealing portion 153 is arranged between the second surface 1141 and the extension portion 1222, and the third sealing portion 153 connects the first sealing portion 151 and the second sealing portion 152.

Specifically, the first groove side surface 11331 and the second groove side surface 11332 are connected to the groove bottom surface 11333 and the first surface 1131 of the second groove 1133. Part of the outer peripheral surface of the extension portion 1222 can abut against the groove bottom surface 11333 of the second groove 1133. The first sealing portion 151 of the sealing member 15 is arranged between the first groove side surface 11331 and the extension portion 1222 to fill the gap between the first groove side surface 11331 and the extension portion 1222. The second sealing portion 152 is arranged between the second groove side surface 11332 and the extension portion 1222 to fill the gap between the second groove side surface 11332 and the extension portion 1222. The third sealing portion 153 connects the first sealing portion 151 and the second sealing portion 152 and is arranged between the second surface 1141 and the extension portion 1222 to fill the gap between the second surface 1141 of the second heat conducting plate 114 and the extension portion 1222.

The shapes of the first sealing portion 151, the second sealing portion 152 and the third sealing portion 153 can be adapted to the shapes of the extension portion 1222 and the second groove 1133. Exemplarily, as shown in FIG11 , the second groove 1133 is a rectangular groove, the cross section of the extension portion 1222 is also rectangular, the side of the extension portion 1222 facing the groove bottom surface 11333 of the second groove 1133 forms a surface contact with the groove bottom surface 11333 of the second groove 1133, the first sealing portion 151, the second sealing portion 152 and the third sealing portion 153 are all roughly strip-shaped structures, and the overall sealing member 15 is roughly in the shape of a "ㄇ", and the sealing member 15 is arranged between the extension portion 1222 and the first groove side surface 11331, the second groove side surface 11332 and the second surface 1141.

The seal 15 can press the extension portion 1222 against the bottom wall of the second groove 1133. At the same time, the first seal portion 151, the second seal portion 152 and the third seal portion 153 completely fill the gap between the extension portion 1222 and the inner wall of the through hole 116, so that the main body 11 and the extension portion 1222 are sealed with each other, thereby effectively improving the sealing of the cavity 112.

According to some embodiments of the present application, as shown in FIG. 11 , the first surface 1131 is provided with third grooves 1134 on two opposite sides of the second groove 1133 , and two ends of the third sealing portion 153 are embedded in the third grooves 1134 .

Specifically, one of the third grooves 1134 is disposed on a side of the second groove 1133 close to the first groove side 11331, and the third groove 1134 extends to the first groove side 11331 and communicates with the second groove 1133. Another third groove 1134 is disposed on a side of the second groove 1133 close to the second groove side 11332, and the third groove 1134 extends to the second groove side 11332 and communicates with the second groove 1133.

One end of the third sealing portion 153 facing the first groove side 11331 is embedded in a third groove 1134 located on the same side as the first groove side 11331 , and one end of the third sealing portion 153 facing the second groove side 11332 is embedded in a third groove 1134 located on the same side as the second groove side 11332 .

In the above technical solution, the first surface 1131 of the first heat conducting plate 113 is provided with a third groove 1134 for accommodating the seal 15 . The third groove 1134 accommodates and limits the seal 15 , effectively improving the reliability of the seal 15 after installation, thereby effectively improving the sealing effect of the seal 15 .

There are many implementation forms of the insulating coolant. For example, the insulating coolant can be a fluorinated liquid or various types of non-conductive cooling oils.

The heat exchange medium is an insulating coolant, which prevents the heat exchange medium from being electrically charged due to conduction between the heat exchange medium and the busbar 12, and reduces the possibility of the main body 11 being electrically charged due to conduction between the main body 11 and the busbar 12. The possibility of short circuiting the battery cell 21 due to conduction between the busbars 12 through the heat exchange medium can be reduced, and the reliability of the battery module 10 or battery 100 using the thermal management component 1 can be further improved.

Some embodiments of the present application also provide a battery module 10, as shown in FIG3 and FIG4, the battery module 10 includes a battery cell group 2 and a thermal management component 1, the battery cell group 2 includes a plurality of battery cells 21 stacked, each battery cell 21 includes a first wall 211 and an electrode terminal 212 disposed on the first wall 211. The thermal management component 1 is used to adjust the temperature of the battery cell 21, and the busbar 12 is connected to the electrode terminal 212.

As mentioned above, the battery 100 may include a plurality of battery cells 21, and the number of battery cells 21 may be set to any value according to different power requirements. Multiple battery cells 21 may be connected in series, in parallel or in a mixed manner to achieve a larger capacity or power. Since the number of battery cells 21 included in each battery 100 may be large, in order to facilitate installation, the battery cells 21 may be grouped, and each group of battery cells is grouped into a battery module 10. The number of battery cells 21 included in the battery module 10 is not limited and can be set according to requirements. The battery 100 may include a battery module 10, and the battery 100 may also include a plurality of battery modules 10, which may be connected in series, in parallel or in a mixed manner. The thermal management component 1 is used to regulate the temperature of the battery cells 21 of the battery cell group 2.

The battery cell 21 may include one or more electrode assemblies 215 and a shell, wherein the electrode assembly 215 is accommodated in the shell, and the first wall 211 may be any wall portion of the shell. In the embodiment of "the shell includes a shell 213 and a cover 214", the first wall 211 may be the cover 214 or any wall portion of the shell 213.

Exemplarily, as shown in FIG4 , the battery cell 21 includes an electrode assembly 215 and a shell, wherein the electrode assembly 215 is accommodated in the shell, and the shell includes a shell 213 and a cover 214, wherein the shell 213 is a hollow structure with an opening 111 at one end, and the cover 214 covers the opening 111 of the shell 213 and forms a closed space together with the shell 213. The first wall 211 is the cover 214, and the electrode terminal 212 is disposed on the cover 214.

The thermal management component 1 may be any one of the thermal management components 1 in the above embodiments, and the thermal management component 1 may be disposed on one side of the battery cell group 2. The busbar 12 of the body 11 is connected to the electrode terminal 212 of the battery cell 21.

Exemplarily, as shown in FIG3 , a plurality of battery cells 21 of a battery cell group 2 are arranged along the Y direction, an electrode terminal 212 of each battery cell 21 is arranged on one side of the battery cell 21 along the Z direction, and a thermal management component 1 is arranged on one side of the battery cell group 2 along the Z direction, and the Z direction is perpendicular to the Y direction.

In practical applications, the electrode terminal 212 may be disposed at the top of the battery cell group 2 in the vertical direction, and the thermal management component 1 is disposed above the battery cell group 2 .

The thermal management component 1 can effectively adjust the temperature of the electrode terminal 212. The electrode terminal 212 directly passes through the interior of the battery cell 21, so the temperature can be conducted faster, thereby effectively improving the temperature regulation effect of the thermal management component 1 on the battery cell 21, and effectively improving the reliability of the battery 100; at the same time, since the busbar 12 is connected to the electrode terminal 212 of the battery cell 21, when the thermal management component 1 is used to cool the battery cell 21 (the heat exchange medium contained in the cavity 112 is the cooling medium), the thermal management component 1 can effectively reduce the temperature of the electrode terminal 212, effectively reduce the risk of overheating of the electrode terminal 212 caused by the battery cell 21 during the charging and discharging process, and thus effectively improve the reliability of the battery module 10.

According to some embodiments of the present application, please refer to FIG. 3 and further to FIG. 13, which is a partial side view of the thermal management component provided by some embodiments of the present application and the battery cell. The electrode terminal 212 includes a positive terminal 212a and a negative terminal 212b arranged at intervals, and a convex portion 115 is formed on the side of the body 11 facing the battery cell group 2, and the convex portion 115 abuts against the area of the first wall 211 located between the positive terminal 212a and the negative terminal 212b.

Specifically, the electrode terminal 212 of each battery cell 21 includes a positive terminal 212a and a negative terminal 212b, both of which are disposed on the first wall 211 and are connected to the busbar 12. The positive terminal 212a and the negative terminal 212b can be fixed to the busbar 12 by welding.

As shown in FIG3 , the multiple battery cells 21 of the battery cell group 2 are arranged along the Y direction, the electrode terminal 212 of each battery cell 21 is arranged on one side of the battery cell 21 along the Z direction, the thermal management component 1 is arranged on one side of the battery cell group 2 along the Z direction, and a convex portion 115 is formed on one side of the body 11 facing the battery cell group 2, and the Z direction and the Y direction are perpendicular to each other.

The positive terminal 212a and the negative terminal 212b may be arranged at intervals on the first wall 211 of the battery cell 21 in any direction perpendicular to the Z direction. Multiple groups of convex portions 115 may be provided, and the multiple groups of convex portions 115 may be arranged along the stacking direction (Y direction) of the battery cell 21. Each group of convex portions 115 abuts against the area between the positive terminal 212a and the negative terminal 212b of the first wall 211 of the same battery cell 21. Each group of convex portions 115 may be one, two, three or even more.

The protrusion 115 may be in line contact with the first wall 211 or in surface contact with the first wall 211 .

Exemplarily, as shown in FIG. 3 and FIG. 13 , the positive terminals 212a and the negative terminals 212b of all battery cells 21 are arranged at intervals along the X direction, and the positive terminals 212a and the negative terminals 212b are arranged in two rows along the stacking direction (Y direction) of the battery cells 21. The positive terminal 212a and the negative terminal 212b both protrude from the first wall 211 of the battery cell 21. The body 11 is provided with a convex portion 115, which extends a certain length along the stacking direction (Y direction) of the battery cell 21, and the convex portion 115 can abut against the first wall 211 of multiple battery cells 21 of the battery cell group 2 at the same time. The convex portion 115 has a third surface 1151 facing the first wall 211, and the third surface 1151 is in surface contact with the area between the positive terminal 212a and the negative terminal 212b of the first wall 211, and the X direction, the Y direction and the Z direction are perpendicular to each other.

The main body 11 of the thermal management component 1 is formed with a protrusion 115. After the thermal management component 1 is grouped with the battery cell group 2, the protrusion 115 is accommodated between the positive terminal 212a and the negative terminal 212b of the battery cell 21 and abuts against the battery cell 21. The protrusion 115 has a certain anti-expansion effect on the battery cell 21, which can reduce the expansion deformation generated during the use of the battery cell 21, which is beneficial to improving the performance of the battery module 10.

According to some embodiments of the present application, the electrode terminal 212 includes a positive terminal 212 a and a negative terminal 212 b that are spaced apart, and a region of the first wall 211 between the positive terminal 212 a and the negative terminal 212 b is connected to the thermal management component 1 .

As shown in Figure 3, multiple battery cells 21 of the battery cell group 2 are arranged along the Y direction, the first wall 211 is located on one side of the battery cell 21 along the Z direction, the positive terminal 212a and the negative terminal 212b of each battery cell 21 are arranged on the first wall 211, the thermal management component 1 is arranged on one side of the battery cell group 2 along the Z direction, and the side of the body 11 facing the battery cell group 2 is connected to the area of the first wall 211 located between the positive terminal 212a and the negative terminal 212b.

The main body 11 and the first wall 211 may be connected to each other by bonding, welding or the like.

The thermal management component 1 is connected to the battery cell 21, which is beneficial to further improve the stability of the relative position of the thermal management component 1 and the battery cell 21, thereby improving the stability of the overall structure of the battery module 10, and further improving the stability and reliability of the thermal management component 1 in regulating the temperature of the battery cell group 2, which is beneficial to further improve the reliability of the battery module 10.

According to some embodiments of the present application, a region of the first wall 211 between the positive terminal 212 a and the negative terminal 212 b is bonded to the thermal management component 1 by colloid.

The colloid may be any conventional adhesive. In order to improve the heat transfer effect between the body 11 and the battery cell 21, the colloid may be a colloid with good thermal conductivity, such as thermal conductive silica gel.

The thermal management component 1 is bonded to the battery cell 21 , and the process is simple, the connection stability is reliable, and the assembly operation of the battery module 10 is convenient.

According to some embodiments of the present application, as shown in Figures 3, 6 and 13, the cavity 112 includes a main channel 1121 and a heat exchange chamber 1122 connected to the main channel 1121, the opening 111 is connected to the heat exchange chamber 1122, and the manifold 12 serves as a wall portion of the heat exchange chamber 1122; along the thickness direction of the first wall 211, the projection of the main channel 1121 on the first wall 211 is located between the positive terminal 212a and the negative terminal 212b.

As mentioned above, the heat exchange medium in the cavity 112 can be circulated to achieve a better temperature regulation effect. The heat exchange medium can flow in the main channel 1121. When observed along the thickness direction of the first wall 211 (the Z direction shown in the figure), the main channel 1121 is located between the positive terminal 212a and the negative terminal 212b of the battery cell 21, that is, the main channel 1121 is located at a position corresponding to the protrusion 115 in the body 11.

The protrusion 115 abuts against the battery cell 21, and the main channel 1121 of the thermal management component 1 corresponds to the protrusion 115. The heat exchange medium in the main channel 1121 can exchange heat with the battery cell 21 through the protrusion 115, further improving the temperature regulation effect of the thermal management component 1 on the battery cell group 2, thereby further improving the reliability of the battery module 10.

Some embodiments of the present application further provide a battery 100, comprising a battery module 10 as described in any of the above solutions.

As mentioned above, the battery 100 may include a battery module 10, that is, the battery 100 includes a plurality of battery cells 21 and a thermal management component 1 of any of the above solutions, and the thermal management component 1 is used to adjust the temperature of the plurality of battery cells 21. The battery 100 may also include a plurality of battery modules 10, and the plurality of battery modules 10 may be connected in series, in parallel or in a mixed manner.

Some embodiments of the present application further provide an electric device, the electric device comprising the battery 100 described in the above solution, the battery 100 is used to provide electric energy. The electric device can be any of the above electric equipment or systems.

Please refer to Figures 5 to 12, some embodiments of the present application provide a thermal management component 1, the thermal management component 1 includes a main body 11, a busbar 12, a first insulating member 13, a second insulating member 14 and a sealing member 15, the main body 11 includes a first heat conducting plate 113 and a second heat conducting plate 114 which are stacked, the first heat conducting plate 113 having a first surface 1131 facing the second heat conducting plate 114, the first surface 1131 is provided with a first groove 1132 and a second groove 1133, the second heat conducting plate 114 having a second surface 1141 facing the first heat conducting plate 113, the second surface 1141 and the first groove 1132 together form a cavity 112, and the second surface 1141 and the second groove 1133 together form a through hole 116.

The cavity 112 includes a main channel 1121, a plurality of heat exchange chambers 1122, a plurality of branch channels and a plurality of connecting channels 1124. The plurality of heat exchange chambers 1122 are spaced apart on both sides of the main channel 1121. Each heat exchange chamber 1122 is connected to the main channel 1121 through a branch channel 1123. Two adjacent heat exchange chambers 1122 on the same side of the main channel 1121 are connected through a connecting channel 1124. The body 11 is provided with a plurality of openings 111. The plurality of openings 111 correspond to the plurality of heat exchange chambers 1122 one by one and are connected to each other. The plurality of openings 111 include a first opening 1111 and a second opening 1112.

The busbar 12 includes a first busbar 121 and a second busbar 122. The first busbar 121 is used to realize the electrical connection of at least two battery cells 21 in the battery module 10, and the second busbar 122 is used to output the electric energy of the battery module 10. The first busbar 121 closes the first opening 1111, and the second busbar 122 includes a main body 1221 and an extension 1222. The main body 1221 closes the second opening 1112, and one end of the extension 1222 is connected to the main body 1221, and the other end extends out of the body 11 through the through hole 116.

The first insulating member 13 is disposed between the opening 111 and the busbar 12 to insulate the busbar 12 from the body 11. The second insulating member 14 is sleeved on the extension 1222 to achieve insulation between the extension 1222 and the body 11. The sealing member 15 is disposed between the second insulating member 14 and the inner wall of the through hole 116 of the body 11 to achieve a sealed connection between the extension 1222 and the body 11.

5 to 13 , some embodiments of the present application provide a battery module 10 , which includes a thermal management component 1 and a battery cell group 2 .

The thermal management component 1 includes a main body 11, a busbar 12, a first insulating member 13, a second insulating member 14 and a sealing member 15. The main body 11 includes a first heat conducting plate 113 and a second heat conducting plate 114 which are stacked. The first heat conducting plate 113 has a first surface 1131 facing the second heat conducting plate 114. The first surface 1131 is provided with a first groove 1132 and a second groove 1133. The second heat conducting plate 114 has a second surface 1141 facing the first heat conducting plate 113. The second surface 1141 and the first groove 1132 together form a cavity 112. The second surface 1141 and the second groove 1133 together form a through hole 116.

The battery cell group 2 includes a plurality of battery cells 21 stacked along the Y direction, the battery cells 21 include a first wall 211 and an electrode terminal 212 disposed on the first wall 211, the first wall 211 is located at one side of the battery cell 21 along the Z direction, the electrode terminal 212 includes a positive terminal 212a and a negative terminal 212b disposed at intervals, and the positive terminal 212a and the negative terminal 212b are disposed at intervals along the X direction. The thermal management component 1 is disposed at one side of the battery cell group 2 along the Z direction and is adjacent to the first wall 211. A convex portion 115 is formed on one side of the body 11 facing the first wall 211, the convex portion 115 abuts against a region of the first wall 211 located between the positive terminal 212a and the negative terminal 212b, the convex portion 115 is bonded to the first wall 211 on one side facing the first wall 211, and the projection of the main channel 1121 on the first wall 211 is located between the positive terminal 212a and the negative terminal 212b.

It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A thermal management component, comprising:

A body, wherein a cavity for accommodating a heat exchange medium is disposed inside the body, and an opening communicating with the cavity is disposed on the body;

A collector is connected to the body and closes the opening.
The thermal management component according to claim 1, wherein the busbars and the openings are both provided in plurality, the busbars are provided corresponding to the openings, and each of the busbars closes the opening corresponding thereto.
The thermal management component according to claim 1 or 2, wherein the cavity comprises a main channel and a heat exchange cavity connected to the main channel, the opening is connected to the heat exchange cavity, and the manifold serves as a wall portion of the heat exchange cavity.
The thermal management component according to claim 3, wherein the flow collector and the heat exchange chamber are provided in plurality, the plurality of heat exchange chambers are distributed at intervals on both sides of the main channel, and the flow collector and the heat exchange chamber are provided correspondingly.
The thermal management component according to claim 4, wherein the cavity further comprises a plurality of branch flow channels, and each of the heat exchange chambers is connected to the main flow channel through one of the branch flow channels.
The thermal management component according to claim 4 or 5, wherein the cavity further comprises a connecting flow channel, and two adjacent heat exchange chambers located on the same side of the main flow channel are connected through one of the connecting flow channels.
The thermal management component according to any one of claims 1 to 6, wherein the thermal management component further comprises:

The first insulating member is disposed between the current collector and the body to achieve an insulating connection between the current collector and the body.
The thermal management component according to any one of claims 1 to 7, wherein the body comprises a first heat conducting plate and a second heat conducting plate which are stacked, the cavity is formed between the first heat conducting plate and the second heat conducting plate, and the opening is provided on the first heat conducting plate or the second heat conducting plate.
The thermal management component according to claim 8, wherein the first heat conducting plate has a first surface facing the second heat conducting plate, the first surface is provided with a first groove, the second heat conducting plate has a second surface facing the first heat conducting plate, and the second surface and the first groove together enclose the cavity.
The thermal management component according to any one of claims 1 to 9, wherein the thermal management component is used in a battery module;

The busbar comprises a first busbar and a second busbar, wherein the first busbar is used to realize the electrical connection of at least two battery cells in the battery module, and the second busbar is used to output the electric energy of the battery module;

The opening includes a first opening and a second opening. The first busbar closes the first opening, and the second busbar closes the second opening.
The thermal management component according to claim 10, wherein the second busbar comprises:

A main body portion, closing the second opening;

An extension part, one end of which is connected to the main body, and the other end of which extends out of the main body.
The thermal management component according to claim 11, wherein the body is provided with a through hole communicating with the cavity, and the extension portion extends out of the body from the through hole.
The thermal management component according to claim 12, wherein the thermal management component further comprises:

The second insulating member is disposed between the extension portion and the inner wall of the through hole to achieve insulation between the extension portion and the body.
The thermal management component according to claim 13, wherein the second insulating member is sleeved on the extension portion.
The thermal management component according to any one of claims 12 to 14, wherein the thermal management component further comprises:

A sealing member is disposed between the extension portion and the inner wall of the through hole to achieve a sealed connection between the extension portion and the body.
The thermal management component according to claim 15, wherein the body comprises a first heat conducting plate and a second heat conducting plate arranged in a stacked manner, the first heat conducting plate having a first surface facing the second heat conducting plate, the first surface being provided with a first groove and a second groove, the second heat conducting plate having a second surface facing the first heat conducting plate, the second surface and the first groove together enclosing the cavity, and the second surface and the second groove together enclosing the through hole.
The thermal management component according to claim 16, wherein the second groove has a first groove side surface and a second groove side surface arranged opposite to each other, the seal comprises a first sealing portion, a second sealing portion and a third sealing portion, the first sealing portion is arranged between the first groove side surface and the extension portion, the second sealing portion is arranged between the second groove side surface and the extension portion, the third sealing portion is arranged between the second surface and the extension portion, and the third sealing portion connects the first sealing portion and the second sealing portion.
The thermal management component according to claim 17, wherein third grooves are provided on the first surface at two opposite sides of the second groove, and two ends of the third sealing portion are embedded in the third grooves.
The thermal management component according to any one of claims 1 to 18, wherein the heat exchange medium is an insulating coolant.
A battery module, comprising:

A battery cell group, comprising a plurality of battery cells arranged in a stacked manner, wherein the battery cells include a first wall and an electrode terminal arranged on the first wall;

The thermal management component according to any one of claims 1 to 19, wherein the thermal management component is used to adjust the temperature of the battery cell, and the busbar is connected to the electrode terminal.
The battery module according to claim 20, wherein the electrode terminal includes a positive terminal and a negative terminal arranged at intervals, and a convex portion is formed on a side of the body facing the battery cell group, and the convex portion abuts against an area of the first wall located between the positive terminal and the negative terminal.
The battery module according to claim 20 or 21, wherein the electrode terminal includes a positive terminal and a negative terminal that are spaced apart, and a region of the first wall located between the positive terminal and the negative terminal is connected to the thermal management component.
The battery module according to claim 22, wherein a region of the first wall between the positive terminal and the negative terminal is bonded to the thermal management component by colloid.
The battery module according to any one of claims 21 to 23, wherein the cavity comprises a main channel and a heat exchange cavity connected to the main channel, the opening is connected to the heat exchange cavity, and the manifold serves as a wall portion of the heat exchange cavity;

Along the thickness direction of the first wall, a projection of the main channel on the first wall is located between the positive terminal and the negative terminal.
A battery comprising the battery module as claimed in any one of claims 20 to 24.
An electrical device comprising the battery as claimed in claim 25, wherein the battery is used to provide electrical energy.