CN216720205U

CN216720205U - Explosion venting device for battery cabinet, battery cabinet and energy storage device

Info

Publication number: CN216720205U
Application number: CN202220246362.9U
Authority: CN
Inventors: 王学辉; 高雄伟; 陈小波
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-01-30
Filing date: 2022-01-30
Publication date: 2022-06-10
Anticipated expiration: 2032-01-30
Also published as: WO2023142966A1

Abstract

The application relates to an explosion venting device for a battery cabinet, the battery cabinet and an energy storage device. The utility model provides a let out and explode device for battery cabinet, battery cabinet includes the cabinet body, and the cabinet body is equipped with the chamber that holds that is used for holding the battery to and let out the window of exploding with holding the chamber and being linked together. The explosion venting device comprises a turning plate and a first driving mechanism, wherein the first driving mechanism is arranged in the cabinet body and connected with the turning plate for driving the turning plate to shield or open an explosion venting window. The first driving mechanism is configured to drive the turning plate to move to open the explosion venting window in response to the air pressure in the accommodating cavity reaching a preset air pressure value. In the explosion venting device, the first driving mechanism and the turning plate can make corresponding response aiming at the air pressure in the accommodating cavity, the response is more timely, the response speed is faster, and the problem of thermal runaway can be timely solved.

Description

Explosion venting device for battery cabinet, battery cabinet and energy storage device

Technical Field

The application relates to the technical field of battery cabinets, in particular to an explosion venting device for a battery cabinet, the battery cabinet and an energy storage device.

Background

In order to facilitate the movement and transportation of the energy storage device, a container type energy storage device appears in the related art, a plurality of battery cabinets are arranged in the container type energy storage device, and a battery pack for storing energy is arranged in each battery cabinet.

Traditional battery cabinet sets up to let out and explodes fan usually, and this explosion-proof fan can be opened when the electric core of battery package takes place thermal runaway to combustible gas concentration in the battery cabinet falls to below combustible gas's the explosion lower limit. However, the response time of the explosion venting fan is long, so that the thermal runaway problem cannot be solved in time.

SUMMERY OF THE UTILITY MODEL

On the basis, it is necessary to provide an explosion venting device for a battery cabinet, the battery cabinet and an energy storage device aiming at the problem that the thermal runaway problem cannot be solved timely due to the long response time of the explosion venting fan.

According to an aspect of the application, a let out and explode device for battery cabinet is provided, battery cabinet includes the cabinet body, and the cabinet body is equipped with the chamber that holds that is used for holding the battery to and let out the window of exploding with holding the chamber and being linked together. The explosion venting device comprises a turning plate and a first driving mechanism, wherein the first driving mechanism is arranged in the cabinet body and connected with the turning plate for driving the turning plate to shield or open an explosion venting window. The first driving mechanism is configured to drive the turning plate to move to open the explosion venting window in response to the air pressure in the accommodating cavity reaching a preset air pressure value.

In the technical scheme of this application, when the battery that holds the intracavity takes place the thermal runaway, can make the atmospheric pressure that holds the intracavity rise, when the atmospheric pressure that holds the intracavity reaches predetermineeing the atmospheric pressure value, first actuating mechanism can drive and turn over the board motion and open and let out and explode the window, this in-process, first actuating mechanism is in response to the atmospheric pressure that holds the intracavity and drives, can drive and turn over the board motion and open and let out and explode the window, and then make and hold the chamber and explode window and external environment intercommunication through letting out, reach the purpose that reduces the concentration that holds intracavity combustible gas, should let out and explode the device, first actuating mechanism and turn over the board and can make corresponding response to the atmospheric pressure that holds the intracavity, the response is more timely, and response speed is faster, can in time solve the thermal runaway problem.

In one embodiment, the turning plate is rotatably connected to the cabinet, and the first driving mechanism is configured to drive the turning plate to rotate to open the explosion venting window in response to the air pressure in the accommodating cavity reaching a preset air pressure value. When the air pressure in the accommodating cavity reaches a preset air pressure value, the first driving mechanism can drive the turning plate to rotate so as to open the explosion venting window, so that the purpose of reducing the concentration of combustible gas in the accommodating cavity is achieved.

In one embodiment, the first driving mechanism comprises a pneumatic member and a transmission assembly connected between the pneumatic member and the flap. The pneumatic piece is provided with an air inlet communicated with the accommodating cavity, and the transmission assembly is used for converting the power output of the pneumatic piece into the rotary motion of the turning plate so as to drive the turning plate to rotate to open the explosion venting window when the air pressure in the accommodating cavity reaches a preset air pressure value. When the air pressure in the accommodating cavity reaches a preset air pressure value, the power output of the pneumatic piece is converted into the rotary motion of the turning plate by means of the transmission assembly, and the explosion venting window can be opened to realize pressure relief.

In one embodiment, the pneumatic element comprises an air cylinder, the air cylinder is provided with an air inlet, and the transmission assembly is connected between a piston rod of the air cylinder and the turning plate and used for converting the linear motion of the piston rod of the air cylinder into the rotary motion of the turning plate. When the air pressure in the accommodating cavity reaches a preset air pressure value, a piston rod of the air cylinder can perform linear motion, the turnover plate can be driven to rotate, the explosion venting window is opened, and the purpose of reducing the concentration of combustible gas in the accommodating cavity is achieved.

In one embodiment, the piston rod of the air cylinder has an extension limit position, and the turnover plate is arranged at a preset angle relative to the explosion venting window when the piston rod of the air cylinder is located at the extension limit position. When the piston rod of cylinder was located and stretches out extreme position, the relative window of exploding of letting out of board is the angle setting of predetermineeing, can make the combustible gas's that holds the intracavity concentration reduce to being less than combustible gas's explosion lower limit, can further improve the security of battery cabinet.

In one embodiment, the transmission assembly comprises a connecting rod with one end connected with the turning plate, a gear arranged at one end of the connecting rod far away from the turning plate, and a rack meshed with the gear. One end of the rack is connected with a piston rod of the air cylinder, wherein the central axis of the gear is parallel to the turning plate. When the atmospheric pressure that holds the intracavity reaches and predetermines atmospheric pressure value, can make the piston rod of cylinder stretch out, drive gear revolve, and then the drive turns over the board and rotates and open and let out and explode the window, can reduce the concentration that holds intracavity combustible gas, reaches the purpose of pressure release.

In one embodiment, the explosion venting device further comprises a second driving mechanism, the gear is connected to the output end of the second driving mechanism, and the second driving mechanism is configured to drive the turning plate to rotate in response to the concentration of the combustible gas in the accommodating cavity reaching the preset concentration, so that the turning plate is opened at the preset angle relative to the explosion venting window. When the concentration of the combustible gas in the accommodating cavity reaches the preset concentration, the second driving mechanism drives the turning plate to rotate to open the explosion venting window, the turning plate can be opened at a preset angle relative to the explosion venting window, the concentration of the combustible gas in the accommodating cavity can be reduced to be lower than the lower explosion limit of the combustible gas, and the safety of the battery cabinet is further improved.

In one embodiment, one end of the turning plate is hinged to one side of the cabinet body provided with the explosion venting window, and the first driving mechanism is connected with one side of the turning plate facing the explosion venting window. The turnover plate can stably rotate relative to the cabinet body, and the stability and the reliability of the explosion venting device can be improved.

In one embodiment, the cabinet body is further provided with a mounting frame located on the inner side of the explosion venting window, the mounting frame is provided with an explosion venting channel communicated between the accommodating cavity and the explosion venting window, and the first driving mechanism is arranged on the mounting frame and located in the explosion venting channel. The first driving mechanism is convenient to install and can well drive the turning plate to rotate.

In one embodiment, a sealing strip surrounding the explosion venting channel is arranged on one side of the mounting frame facing the turning plate, so that the turning plate is connected with the explosion venting window in a sealing mode. Can improve the leakproofness of the cabinet body, avoid dust or moisture and then the cabinet is internal, also can improve the security of battery cabinet.

According to another aspect of the application, a battery cabinet is provided, and the battery cabinet comprises the explosion venting device for the battery cabinet.

According to another aspect of the application, an energy storage device is also provided, and the energy storage device comprises the battery cabinet.

Drawings

Fig. 1 shows a schematic structural diagram of an energy storage device in an embodiment of the present application (with the flap closed);

FIG. 2 shows a partial structural schematic of FIG. 1;

fig. 3 shows a schematic structural diagram of an energy storage device in an embodiment of the present application (with the flap open);

fig. 4 shows a schematic structural view (first view) of the cabinet and the explosion venting device in an embodiment of the present application;

fig. 5 shows a schematic structural view (second view) of the cabinet and the explosion venting device in an embodiment of the present application;

fig. 6 shows an enlarged schematic view at a of fig. 5.

In the figure: 10. an energy storage device; 100. a battery cabinet; 110. a cabinet body; 1101. an accommodating chamber; 1102. an explosion venting window; 1103. an explosion venting channel; 111. installing a frame; 112. a sealing strip; 113. a partition member; a. a sub explosion venting channel; 114. a hinge; 120. an explosion venting device; 121. turning over a plate; 122. a first drive mechanism; 1221. a piston rod; 123. a connecting rod; 124. a gear; 125. a rack; 126. a second drive mechanism.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The battery cell of battery package can produce a certain amount of gas in the use, and this gas temperature is higher, can lead to the electric core to appear the thermal runaway phenomenon when the gas that produces increases to a certain extent.

The conventional battery cabinet is generally provided with an explosion venting fan which can be opened when thermal runaway occurs so as to reduce the concentration of combustible gas in the battery cabinet below the explosion lower limit of the combustible gas. However, the explosion venting fan has long response time, so that the problem of thermal runaway cannot be solved in time.

The inventor of this application discovers through the research, when taking place the thermal runaway, the battery cabinet internal gas pressure can rise, if can design one kind and can in time respond to the device of exploding of letting out of battery cabinet internal gas pressure value, just can in time solve the thermal runaway problem.

In order to solve the problem that thermal runaway cannot be timely solved due to the fact that the response time of the explosion venting fan is long, the inventor of the application conducts intensive research and designs an explosion venting device for a battery cabinet. The explosion venting device comprises a first driving mechanism and a turning plate, wherein the first driving mechanism can drive the turning plate to move to open an explosion venting window when the air pressure in the accommodating cavity reaches a preset air pressure value, when the battery in the accommodating cavity is out of control due to heat, the air pressure in the accommodating cavity is increased, when the air pressure in the accommodating cavity reaches a preset air pressure value, the first driving mechanism drives the turning plate to move to open the explosion venting window, in the process, the first driving mechanism is driven by responding to the air pressure in the accommodating cavity and can drive the turning plate to move to open the explosion venting window, thereby communicating the accommodating cavity with the external environment through the explosion venting window to achieve the purpose of reducing the concentration of combustible gas in the accommodating cavity, in the explosion venting device, the first driving mechanism and the turning plate can make corresponding response aiming at the air pressure in the accommodating cavity, the response is more timely, the response speed is faster, and the problem of thermal runaway can be timely solved.

Fig. 1 shows a schematic structural diagram of energy storage device 10 in an embodiment of the present application when flap 121 is closed, fig. 2 shows a partial schematic structural diagram of fig. 1, and fig. 3 shows a schematic structural diagram of energy storage device 10 in an embodiment of the present application when flap 121 is opened.

Referring to fig. 1-3, the battery cabinet 100 includes a cabinet body 110, the cabinet body 110 is provided with a containing cavity 1101 for containing the battery, and an explosion venting window 1102 communicated with the containing cavity 1101. A battery may be placed within the receiving cavity 1101.

Fig. 4 shows a schematic structural diagram of the cabinet 110 and the explosion venting device 120 in an embodiment of the present application.

In some embodiments of the present application, referring to fig. 3 and fig. 4 optionally in combination with fig. 5, an explosion venting apparatus 120 for a battery cabinet 100 provided in an embodiment of the present application includes a turning plate 121 and a first driving mechanism 122.

The first driving mechanism 122 is disposed in the cabinet body 110, and is connected to the turning plate 121, so as to drive the turning plate 121 to shield or open the explosion venting window 1102, and further enable the accommodating cavity 1101 to communicate with the external environment through the explosion venting window 1102, so as to implement pressure relief.

Wherein the first driving mechanism 122 is configured to drive the flap 121 to move to open the explosion venting window 1102 in response to the air pressure in the accommodating chamber 1101 reaching a preset air pressure value.

Thus, when the battery in the accommodating cavity 1101 is in thermal runaway, the air pressure in the accommodating cavity 1101 can be increased, when the air pressure in the accommodating cavity 1101 reaches a preset air pressure value, the first driving mechanism 122 can drive the turning plate 121 to move and open the explosion venting window 1102, in the process, the first driving mechanism 122 is driven in response to the air pressure in the accommodating cavity 1101 and can drive the turning plate 121 to move and open the explosion venting window 1102, so that the accommodating cavity 1101 is communicated with the external environment through the explosion venting window 1102, the purpose of reducing the concentration of the combustible gas in the accommodating cavity 1101 is achieved, in the explosion venting device 120, the first driving mechanism 122 and the turning plate 121 can make corresponding responses to the air pressure in the accommodating cavity 1101, the responses are more timely, the response speed is faster, and the problem of thermal runaway can be solved timely.

In some embodiments of the present application, optionally, referring to fig. 3, fig. 4 and fig. 5, the turning plate 121 is rotatably connected to the cabinet 110, and the first driving mechanism 122 is configured to drive the turning plate 121 to rotate to open the explosion venting window 1102 in response to the air pressure in the accommodating chamber 1101 reaching a preset air pressure value.

The flap 121 can rotate relative to the cabinet 110 so that the flap 121 can open the explosion venting window 1102.

Thus, when the air pressure in the accommodating chamber 1101 reaches the preset air pressure value, the first driving mechanism 122 drives the turning plate 121 to rotate to open the explosion venting window 1102, so as to achieve the purpose of reducing the concentration of the combustible gas in the accommodating chamber 1101.

In other embodiments, the first driving mechanism 122 drives the flap 121 to move in other movement manners that can open the explosion venting window 1102.

In some embodiments of the present application, referring to fig. 3, 4 and 5, optionally, the first driving mechanism 122 includes a pneumatic member and a transmission assembly connected between the pneumatic member and the flap 121. The pneumatic member has an air inlet communicated with the accommodating cavity 1101, and the transmission assembly is used for converting the power output of the pneumatic member into the rotary motion of the turning plate 121 so as to drive the turning plate 121 to rotate to open the explosion venting window 1102 when the air pressure in the accommodating cavity 1101 reaches a preset air pressure value.

It will be appreciated that the pneumatic element will have a power output when the air pressure in the receiving chamber 1101 reaches a predetermined air pressure value.

Then, when the air pressure in the accommodating cavity 1101 reaches a preset air pressure value, the power output of the pneumatic member is converted into the rotational movement of the turning plate 121 by means of the transmission assembly, and the explosion venting window 1102 can be opened to realize pressure relief.

In some embodiments of the present application, optionally, referring to fig. 3, fig. 4 and fig. 5, the pneumatic element includes a cylinder, the cylinder is provided with an air inlet, and the transmission assembly is connected between the piston rod 1221 of the cylinder and the flap 121, so as to convert the linear motion of the piston rod 1221 of the cylinder into the rotational motion of the flap 121.

It can be understood that when the air pressure in the accommodating chamber 1101 reaches the preset air pressure value, the piston rod 1221 of the air cylinder performs a linear movement.

Thus, the turning plate 121 can be driven to rotate to open the explosion venting window 1102, so as to achieve the purpose of reducing the concentration of the combustible gas in the accommodating cavity 1101.

In some embodiments of the present application, referring to fig. 3, fig. 4 and fig. 5, optionally, the piston rod 1221 of the air cylinder has an extended limit position, and the turning plate 121 is disposed at a predetermined angle relative to the explosion venting window 1102 when the piston rod 1221 of the air cylinder is located at the extended limit position.

It can be understood that the piston rod 1221 of the air cylinder has a stroke, and then, in the stroke range of the piston rod 1221 of the air cylinder, the higher the air pressure in the accommodating chamber 1101 is, the larger the opening angle of the flap 121 is, the concentration of the combustible gas in the accommodating chamber 1101 can be reduced to be lower than the lower explosion limit of the combustible gas, and the safety of the battery cabinet 100 can be further improved.

When the piston rod 1221 of the cylinder is located at the extended limit position, the turning plate 121 is disposed at a preset angle relative to the explosion venting window 1102, so that the concentration of the combustible gas in the accommodating cavity 1101 can be reduced to be lower than the lower explosion limit of the combustible gas, and the safety of the battery cabinet 100 can be further improved.

In the embodiment shown in fig. 2, the piston rod 1221 of the cylinder is in the retracted extreme position, and the flap 121 shields the explosion venting window 1102.

In some embodiments of the present application, referring to fig. 3 and 5 in combination with fig. 6, the transmission assembly includes a connecting rod 123 having one end connected to the turning plate 121, a gear 124 disposed at an end of the connecting rod 123 far from the turning plate 121, and a rack 125 engaged with the gear 124. One end of the rack 125 is connected to the piston rod 1221 of the cylinder, wherein the central axis of the gear 124 is parallel to the flap 121.

Through the transmission of the gear 124 and the rack 125 and the connection of the connecting rod 123, the linear motion of the piston rod 1221 of the air cylinder is converted into the rotational motion of the turning plate 121.

So, when the atmospheric pressure in holding the chamber 1101 reaches and predetermines the atmospheric pressure value, can make the cylinder admit air, the piston rod 1221 of cylinder stretches out, drives gear 124 and rotates, and then drives to turn over the board 121 and rotate and open and let out and explode window 1102, can reduce the concentration that holds the interior combustible gas of chamber 1101, reaches the purpose of pressure release.

In some embodiments of the present application, referring to fig. 3, fig. 5 and fig. 6, optionally, the explosion venting device 120 further includes a second driving mechanism 126, and the gear 124 is connected to an output end of the second driving mechanism 126. The second driving mechanism 126 is configured to drive the turning plate 121 to rotate in response to the concentration of the combustible gas in the accommodating chamber 1101 reaching a preset concentration, so that the turning plate 121 is opened at a preset angle relative to the explosion venting window 1102.

It will be appreciated that the second drive mechanism 126 can drive the gear 124 to rotate, and thus can drive the flap 121 to rotate to open the explosion venting window 1102.

Then, when the concentration of the combustible gas in the accommodating cavity 1101 reaches the preset concentration, the second driving mechanism 126 drives the turning plate 121 to rotate to open the explosion venting window 1102, so that the turning plate 121 can be opened by a preset angle relative to the explosion venting window 1102, the concentration of the combustible gas in the accommodating cavity 1101 can be reduced to be lower than the lower explosion limit of the combustible gas, and the safety of the battery cabinet 100 is further improved.

In some embodiments of the present application, referring to fig. 3 and fig. 4, optionally, one end of the turning plate 121 is hinged to a side of the cabinet 110 where the explosion venting window 1102 is disposed, and the first driving mechanism 122 is connected to a side of the turning plate 121 facing the explosion venting window 1102.

When the air pressure in the accommodating cavity 1101 reaches a preset air pressure value, the turning plate 121 can stably rotate relative to the cabinet body 110, so that the stability and reliability of the explosion venting device 120 can be improved.

It can be appreciated that the first driving mechanism 122 is located inside the turning plate 121, so as to save the overall occupied space of the battery cabinet 100.

Optionally, the bottom end of the flap 121 is hinged to the side of the cabinet 110 where the explosion venting window 1102 is disposed.

Optionally, the bottom end of the flap 121 is hinged to the side of the cabinet 110 provided with the explosion venting window 1102 through a hinge 114.

In some embodiments of the present application, referring to fig. 4 and 5 optionally, the cabinet body 110 is further provided with a mounting frame 111 located inside the explosion venting window 1102, and the mounting frame 111 has an explosion venting channel 1103 communicating between the accommodating cavity 1101 and the explosion venting window 1102. The first driving mechanism 122 is disposed in the mounting frame 111 and located in the explosion venting channel 1103.

Therefore, when the air pressure in the accommodating cavity 1101 reaches a preset air pressure value, the first driving mechanism 122 can drive the turning plate 121 to rotate to open the explosion venting window 1102, the accommodating cavity 1101 is communicated with the external environment through the explosion venting channel 1103 and the explosion venting window 1102, the concentration of combustible gas in the accommodating cavity 1101 can be reduced, and the purpose of pressure relief is achieved.

The first driving mechanism 122 is convenient to install, and the first driving mechanism 122 can well drive the turning plate 121 to rotate.

Optionally, the first driving mechanism 122, the second driving mechanism 126 and the transmission assembly are all located in the explosion venting channel 1103, so that the overall occupied space of the explosion venting device 120 and the cabinet 110 can be saved.

Optionally, N separating members 113 are disposed in the explosion venting channel 1103, the explosion venting channel 1103 is divided into N +1 sub-explosion venting channels a by the N separating members 113, and a first driving mechanism 122, a transmission assembly and a second driving mechanism 126 are disposed in each sub-explosion venting channel a. Thus, the flap 121 can be better driven to rotate to open the explosion venting window 1102.

Optionally, the second driving mechanism 126 is installed on the partition part 113, and the second driving mechanism 126 and the first driving mechanism 122 are installed at different positions, and the installation positions are arranged reasonably, so that the first driving mechanism 122 and the second driving mechanism 126 can drive the turnover panel 121 to rotate respectively to open the explosion venting window 1102 conveniently.

In some embodiments of the present application, referring to fig. 4 and 5, optionally, a sealing strip 112 surrounding the explosion venting channel 1103 is disposed on a side of the mounting frame 111 facing the flap 121, so that the flap 121 is connected to the explosion venting window 1102 in a sealing manner.

The turnover plate 121 is hermetically connected to the explosion venting window 1102, so that the sealing performance of the cabinet body 110 can be improved, dust or moisture is prevented from entering the cabinet body 110, and the safety of the battery cabinet 100 can also be improved.

In some embodiments of the present application, referring to fig. 3, fig. 4 and fig. 5, the explosion venting device 120 includes a flap 121, a first driving mechanism 122, a transmission assembly and a second driving mechanism 126. The first drive mechanism 122 includes a pneumatic cylinder and the transmission assembly includes a connecting rod 123, a gear 124, and a rack 125. When the atmospheric pressure in the holding chamber 1101 reaches the preset atmospheric pressure value, the cylinder can be inflated, the piston rod 1221 of the cylinder extends out, the gear 124 is driven to rotate, the turning plate 121 is driven to rotate, the explosion venting window 1102 is opened, the concentration of combustible gas in the holding chamber 1101 can be reduced, and the purpose of pressure relief is achieved.

When the concentration of the combustible gas in the accommodating cavity 1101 reaches the preset concentration, the second driving mechanism 126 drives the turning plate 121 to rotate to open the explosion venting window 1102, so that the concentration of the combustible gas in the accommodating cavity 1101 can be reduced to be lower than the lower explosion limit of the combustible gas, and the safety of the battery cabinet 100 can be improved.

Therefore, the explosion venting device 120 can solve the problem of thermal runaway in time, and has double guarantee effects and higher safety.

An embodiment of the present application provides a battery cabinet 100, which includes the explosion venting apparatus 120 for the battery cabinet 100.

An embodiment of the present application provides an energy storage device 10, which includes the above battery cabinet 100.

Alternatively, the energy storage device 10 may include one battery cabinet 100, or may include a plurality of battery cabinets 100.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An explosion venting apparatus for a battery cabinet, wherein the battery cabinet (100) comprises a cabinet body (110), the cabinet body (110) is provided with a containing cavity (1101) for containing a battery, and an explosion venting window (1102) communicated with the containing cavity (1101), and the explosion venting apparatus (120) comprises:

the explosion venting device comprises a turning plate (121) and a first driving mechanism (122), wherein the first driving mechanism (122) is arranged on the cabinet body (110) and connected with the turning plate (121) for driving the turning plate (121) to shield or open the explosion venting window (1102);

wherein the first driving mechanism (122) is configured to drive the flap (121) to move to open the explosion venting window (1102) in response to the air pressure in the accommodating cavity (1101) reaching a preset air pressure value.

2. The explosion venting apparatus for a battery cabinet according to claim 1, wherein the flap (121) is rotatably connected to the cabinet body (110);

the first driving mechanism (122) is configured to drive the turning plate (121) to rotate to open the explosion venting window (1102) in response to the air pressure in the accommodating cavity (1101) reaching a preset air pressure value.

3. The explosion venting apparatus for a battery cabinet according to claim 2, wherein the first driving mechanism (122) comprises a pneumatic member, and a transmission assembly connected between the pneumatic member and the flap (121);

the pneumatic piece is provided with an air inlet communicated with the accommodating cavity (1101), and the transmission assembly is used for converting the power output of the pneumatic piece into the rotary motion of the turning plate (121) so as to drive the turning plate (121) to rotate to open the explosion venting window (1102) when the air pressure in the accommodating cavity (1101) reaches a preset air pressure value.

4. The explosion venting device for a battery cabinet according to claim 3, wherein the pneumatic member comprises a cylinder, the cylinder is provided with the air inlet, and the transmission assembly is connected between a piston rod (1221) of the cylinder and the flap (121) for converting a linear motion of the piston rod (1221) of the cylinder into a rotational motion of the flap (121).

5. Explosion venting apparatus for a battery cabinet according to claim 4, characterized in that the piston rod (1221) of the cylinder has an extended limit position;

when a piston rod (1221) of the air cylinder is located at an extending limit position, the turning plate (121) is arranged at a preset angle relative to the explosion venting window (1102).

6. The explosion venting device for the battery cabinet according to claim 4, wherein the transmission assembly comprises a connecting rod (123) with one end connected with the turning plate (121), a gear (124) arranged at one end of the connecting rod (123) far away from the turning plate (121), and a rack (125) meshed with the gear (124);

one end of the rack (125) is connected to a piston rod (1221) of the cylinder;

wherein the central axis of the gear (124) is parallel to the flap (121).

7. The explosion venting apparatus for a battery cabinet according to claim 6, wherein the explosion venting apparatus (120) further comprises a second driving mechanism (126), and the gear (124) is connected to an output end of the second driving mechanism (126);

the second driving mechanism (126) is configured to drive the turning plate (121) to rotate in response to the concentration of the combustible gas in the accommodating cavity (1101) reaching a preset concentration, so that the turning plate (121) is opened at a preset angle relative to the explosion venting window (1102).

8. The explosion venting device for a battery cabinet according to any one of claims 2 to 7, wherein one end of the flap (121) is hinged to one side of the cabinet body (110) provided with the explosion venting window (1102);

the first driving mechanism (122) is connected with one side of the turning plate (121) facing the explosion venting window (1102).

9. The explosion venting apparatus for a battery cabinet according to claim 8, wherein the cabinet body (110) is further provided with a mounting frame (111) located inside the explosion venting window (1102), the mounting frame (111) has an explosion venting channel (1103) communicated between the accommodating cavity (1101) and the explosion venting window (1102);

the first driving mechanism (122) is arranged on the mounting frame (111) and is positioned in the explosion venting channel (1103).

10. The explosion venting device for a battery cabinet according to claim 9, wherein a sealing strip (112) surrounding the explosion venting channel (1103) is disposed on one side of the mounting frame (111) facing the flap (121) so that the flap (121) is connected to the explosion venting window (1102) in a sealing manner.

11. A battery cabinet, characterized in that it comprises an explosion venting device for a battery cabinet according to any one of claims 1 to 10.

12. An energy storage device, comprising the battery cabinet of claim 11.