CN217589344U - Battery with a battery cell - Google Patents
Battery with a battery cell Download PDFInfo
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- CN217589344U CN217589344U CN202221648724.3U CN202221648724U CN217589344U CN 217589344 U CN217589344 U CN 217589344U CN 202221648724 U CN202221648724 U CN 202221648724U CN 217589344 U CN217589344 U CN 217589344U
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- battery
- main body
- injection hole
- liquid injection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a battery technology field provides a battery, include: the battery shell is provided with a liquid injection hole; the battery comprises a battery shell, a battery core and a liquid injection hole, wherein the battery core is arranged in the battery shell and comprises a battery core main body and an electrode lug part, the electrode lug part extends out from the side surface of the battery core main body, the liquid injection hole is positioned on one side, close to the electrode lug part, of the battery core main body, and the liquid injection hole is arranged on the surface, opposite to the large surface of the electrode lug part, of the battery shell; wherein, on the extending direction vertically direction of electric core main part and utmost point ear portion, annotate the minimum vertical distance between liquid hole and the utmost point ear and be a, the width of electric core main part is b, and 5 be less than or equal to b/a and be less than or equal to 20, not only can avoid electrolyte to annotate the liquid in-process and strike utmost point ear portion, and can guarantee utmost point ear portion's width size to this overcurrent capacity and the charge-discharge rate of battery of guaranteeing electric core, thereby improve the performance of battery.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery.
Background
In the related art, the liquid injection hole is formed in the battery shell, so that liquid injection in the battery is realized, and the relation between the setting position of the liquid injection hole and the lug part of the battery core directly influences the whole liquid injection effect and the safety performance of the battery.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery to improve the performance of battery.
The utility model provides a battery, include:
the battery shell is provided with a liquid injection hole;
the battery comprises a battery shell, a battery core and a liquid injection hole, wherein the battery core is arranged in the battery shell and comprises a battery core main body and an electrode lug part, the electrode lug part extends out from the side surface of the battery core main body, the liquid injection hole is positioned on one side, close to the electrode lug part, of the battery core main body, and the liquid injection hole is arranged on the surface, opposite to the large surface of the electrode lug part, of the battery shell;
the minimum vertical distance between the liquid injection hole and the lug part is a, the width of the battery cell main body is b, and b/a is more than or equal to 5 and less than or equal to 20.
The utility model discloses battery includes battery case and electric core, is provided with on the battery case and annotates the liquid hole, and the utmost point ear of electric core extends out by the side of the electric core main part of electric core, annotates the liquid hole and is located one side that electric core main part is close to utmost point ear, and annotates the liquid hole and set up in battery case and the relative surface in big surface of utmost point ear to can make to annotate the convenient realization of liquid hole and annotate the liquid to battery case inside. Along the width direction of electric core main part, annotate the minimum vertical distance between liquid hole and the utmost point ear and be a, the width of electric core main part is b, and it is not less than 5 b/a and is not less than 20, not only can avoid electrolyte to annotate the liquid in-process and strike utmost point ear portion, and can guarantee the width size of utmost point ear portion to this overcurrent capacity and the charge-discharge rate of battery of guaranteeing electric core, thereby improve the performance of battery.
Drawings
For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:
FIG. 1 is a schematic diagram of a battery shown in accordance with an exemplary embodiment;
FIG. 2 is an exploded schematic view of a battery according to an exemplary embodiment;
fig. 3 is a partially enlarged structural view illustrating a battery according to an exemplary embodiment.
The reference numerals are illustrated below:
10. a battery case; 11. a liquid injection hole; 12. a first surface; 13. a second surface; 14. a first housing member; 15. a second housing member; 16. sinking; 20. an electric core; 21. a cell main body; 22. a lug portion; 30. the utmost point post subassembly.
Detailed Description
The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, so it should be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.
In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.
The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.
Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in the context of a connection between one element or feature and another element(s), "on," "under," or "inside" or "outside," it can be directly connected to the other element(s) "on," "under" or "inside" or "outside," or indirectly connected to the other element(s) "on," "under" or "inside" or "outside" through intervening elements.
An embodiment of the present invention provides a battery, please refer to fig. 1 to fig. 3, the battery includes: the battery shell 10, the battery shell 10 is provided with a liquid injection hole 11; the battery comprises a battery cell 20, the battery cell 20 is arranged in the battery shell 10, the battery cell 20 comprises a cell main body 21 and a tab part 22, the tab part 22 extends from the side surface of the cell main body 21, the injection hole 11 is positioned on one side of the cell main body 21 close to the tab part 22, and the injection hole 11 is arranged on the surface of the battery shell 10 opposite to the large surface of the tab part 22; in the direction perpendicular to the extending direction of the cell main body 21 and the tab portion 22, the minimum perpendicular distance between the electrolyte injection hole 11 and the tab portion 22 is a, the width of the cell main body 21 is b, and b/a is greater than or equal to 5 and less than or equal to 20.
The utility model discloses a battery of embodiment includes battery case 10 and electric core 20, is provided with on battery case 10 and annotates liquid hole 11, and the utmost point ear portion 22 of electric core 20 extends out by the side of electric core main part 21 of electric core 20, annotates one side that liquid hole 11 is located electric core main part 21 and is close to utmost point ear portion 22, and annotates liquid hole 11 and set up in battery case 10 and the relative surface in utmost point ear portion 22's big surface to can make annotate liquid hole 11 and conveniently realize annotating liquid to battery case 10 is inside. Along the width direction of electric core main part 21, the minimum vertical distance between notes liquid hole 11 and utmost point ear 22 is a, and the width of electric core main part 21 is b, and it is not less than 5 b/a is not less than 20, not only can avoid electrolyte to annotate the in-process and strike utmost point ear 22, and can guarantee the width size of utmost point ear 22 to this overcurrent capacity and the charge-discharge rate of battery of guaranteeing electric core 20, thereby improve the performance of battery.
It should be noted that, the tab portion 22 extends from the side surface of the cell main body 21, and the electrolyte injection hole 11 is located on one side of the cell main body 21 close to the tab portion 22, that is, the tab portion 22 and the electrolyte injection hole 11 are located on the same side of the cell main body 21, so that when electrolyte is injected through the electrolyte injection hole 11, the distance between the tab portion 22 and the electrolyte injection hole 11 needs to be controlled, thereby ensuring that the electrolyte can be reliably injected, and other structures cannot be affected.
In the process of injecting the electrolyte into the battery case 10, the situation that the electrolyte does not directly impact the tab part 22 is avoided as much as possible, and when the value of b/a is too large, the distance between the tab part 22 and the liquid injection hole 11 is short, so that the electrolyte is easily injected onto the tab part 22 when the battery is injected with the liquid, the infiltration rate of the electrolyte is affected, and meanwhile, the tab part 22 is damaged by erosion to cause the structure.
When the value of b/a is too small, the distance between the tab part 22 and the liquid injection hole 11 is relatively long, and at the moment, the size of the tab part 22 is relatively small, so that the overcurrent capacity of a battery core and the charge-discharge rate of the battery are influenced, and meanwhile, the tab part 22 generates heat seriously, so that the safe use of the battery is influenced; alternatively, if the distance between the tab 22 and the liquid inlet 11 is long, the liquid inlet 11 is too close to the end of the battery case 10, and the electrolyte may diffuse around the battery.
The liquid injection hole 11 is used for injecting liquid into the battery case 10, and the liquid injection hole can be sealed by a sealing structure after the liquid injection is completed. The pour hole 11 may be at least two, and the at least two pour holes 11 may be centrosymmetric with respect to the intersection of the first diagonal direction and the second diagonal direction of the battery case 10.
It should be noted that the battery cell main body 21 includes more than two pole pieces, the tab portion 22 includes more than two single-piece tabs, the single-piece tabs respectively extend from the corresponding pole pieces, the width of the single-piece tabs may be smaller than the width of the pole pieces, a plurality of single-piece tabs are stacked to form the tab portion 22, and are connected with the electrode leading structure, for example, the tab portion 22 may be electrically connected with the tab assembly. Wherein the single tab is made of a metal foil having good electrical and thermal conductivity, such as aluminum, copper, nickel, or the like. The width direction of the cell main body 21 may be regarded as the width direction of a single pole piece, and the direction perpendicular to the extending direction of the cell main body 21 and the tab portion 22 is the width direction of a single pole piece. The width direction of the tab portion 22 is parallel to the direction in which the cell main body 21 is perpendicular to the extending direction of the tab portion 22.
Referring to fig. 3, in a direction perpendicular to the extending direction of the cell main body 21 and the tab portion 22, that is, in the width direction of the cell main body 21, the minimum perpendicular distance between the electrolyte injection hole 11 and the tab portion 22 is a, the width of the cell main body 21 is b, and b/a is greater than or equal to 5 and less than or equal to 20. The ratio of the width b of the cell main body 21 to the minimum vertical distance a between the electrolyte injection hole 11 and the tab 22 may be 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 19.8, 19.9 or 20, and so on.
In one embodiment, as shown in fig. 3, along the width direction of the battery cell main body 21, the width of the tab portion 22 is c, and b/(c + a) ≦ 1.5, so as to ensure that the tab portion 22 has a relatively large width dimension, and a certain distance is provided between the tab portion 22 and the electrolyte injection hole 11, which not only can prevent the tab portion 22 from being impacted during the electrolyte injection process, but also can ensure the overcurrent capacity of the battery cell 20 and the charge-discharge rate of the battery, thereby improving the usability of the battery. b/(c + a) may be 1.5, 1.6, 1.7, 2, 2.5, 2.8, 2.9, or 3, etc.
It should be noted that, along the width direction of the cell main body 21, the minimum vertical distance between the electrolyte injection hole 11 and the tab portion 22 is a, the width of the cell main body 21 is b, the width of the tab portion 22 is c,5 ≤ b/a ≤ 20,1.5 ≤ b/(c + a) ≤ 3, the distance between the tab portion 22 and the electrolyte injection hole 11 is relatively reasonable, and it can be ensured that the size of the tab portion 22 is relatively reasonable, further, the electrolyte injection hole 11 is not too close to the end of the battery case 10, so that the electrolyte can be quickly infiltrated, and the electrolyte can be prevented from damaging the tab portion 22.
In one embodiment, as shown in fig. 3, the electrolyte injection hole 11 includes a circular hole, and the orthogonal projection of the tab 22 on the surface of the battery case 10 where the electrolyte injection hole 11 is provided is spaced from the circular hole; wherein the radius of the circular hole is r, the minimum vertical distance between the center of the circular hole and the tab part 22 is d, and a = d-r. Will annotate liquid hole 11 design for the round hole, not only can conveniently annotate the shaping of liquid hole 11, and can make things convenient for the injection of electrolyte, and further, also conveniently control and annotate the distance between liquid hole 11 and utmost point ear 22, even electrolyte can strike utmost point ear 22, also can avoid electrolyte can appear a large amount of problems of strikeing utmost point ear 22.
In one embodiment, the width of the tab portion 22 is c, and c is greater than or equal to 20mm and less than or equal to 60mm, so as to leave a space for other structures in the battery while ensuring the overall overcurrent capacity of the battery cell 20, and facilitate the arrangement of other structures, for example, the arrangement of the electrolyte injection hole 11.
The width c of the tab portion 22 can be 20mm, 21mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 57mm, 58mm, 59mm, or 60mm, etc.
In one embodiment, the radius of the circular hole of the liquid injection hole 11 is r, and r is greater than or equal to 1.2mm and less than or equal to 2.5mm, so that not only can the electrolyte be ensured to be rapidly injected through the liquid injection hole 11, but also the structural strength of the battery shell 10 can be prevented from being influenced by the oversize size of the liquid injection hole 11, and the oversize size of the liquid injection hole 11 can be prevented from occupying too much space, thereby reserving space for the arrangement of other structures.
The radius r of the circular hole of the liquid injection hole 11 can be 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.4mm or 2.5mm, etc.
In one embodiment, the width of the cell main body 21 is b, and b is greater than or equal to 70mm and less than or equal to 120mm, so that the problem of over-thickness of the cell main body 21 can be avoided on the basis of ensuring that the battery has sufficient capacity, thereby facilitating the preparation of the cell 20.
The width b of the cell main body 21 may be 70mm, 71mm, 72mm, 75mm, 80mm, 85mm, 90mm, 95mm, 98mm, 100mm, 105mm, 110mm, 112mm, 115mm, 118mm, 119mm, or 120mm, and the like.
In one embodiment, the distance between the end of the tab 22 far from the cell main body 21 and the cell main body 21 is greater than the maximum perpendicular distance between the electrolyte injection hole 11 and the cell main body 21, that is, the maximum perpendicular distance between the orthographic projection of the tab 22 on the surface of the battery case 10 provided with the electrolyte injection hole 11 and the cell main body 21 is greater than the maximum perpendicular distance between the electrolyte injection hole 11 and the cell main body 21, and compared with the electrolyte injection hole 11, the tab 22 can be closer to the end of the battery case 10, so that on the basis of avoiding that the electrolyte injection hole 11 is too close to the end of the battery case 10 to reduce the structural strength of the battery case 10, the rapid infiltration of the electrolyte after being injected into the battery case 10 can also be ensured.
As shown in fig. 3, the maximum vertical distance between the orthographic projection of the tab portion 22 on the surface of the battery case 10 where the pour hole 11 is provided and the cell main body 21 is greater than the maximum vertical distance between the pour hole 11 and the cell main body 21, and it can be considered that the first distance between the left end of the tab portion 22 and the left end of the first case member 14 is smaller than the second distance between the left end of the pour hole 11 and the left end of the first case member 14.
In one embodiment, the minimum vertical distance between the liquid injection hole 11 and the cell main body 21 is smaller than the minimum vertical distance between the liquid injection hole 11 and the circumferential outer edge of the battery case 10 along the length direction of the cell main body 21, that is, the distance between the liquid injection hole 11 and the circumferential outer edge of the battery case 10 is greater than the distance between the liquid injection hole 11 and the cell main body 21, so that the electrolyte can be quickly infiltrated after being injected into the battery case 10 on the basis of avoiding that the liquid injection hole 11 is too close to the end of the battery case 10 to reduce the structural strength of the battery case 10.
As shown in fig. 3, if the minimum vertical distance between the pour hole 11 and the cell main body 21 is smaller than the minimum vertical distance between the pour hole 11 and the outer circumferential edge of the battery case 10, it can be said that the distance between the left end of the pour hole 11 and the left end of the first case member 14 is greater than the distance between the right end of the pour hole 11 and the left end of the cell main body 21.
In one embodiment, as shown in fig. 1, the battery case 10 includes two opposing first surfaces 12 and four second surfaces 13 disposed around the first surfaces 12, the first surfaces 12 having an area larger than that of the second surfaces 13; wherein, the liquid injection hole 11 is arranged on the first surface 12, thereby enabling the first surface 12 to provide a reliable support surface for the liquid injection hole 11, and facilitating the arrangement and the liquid injection of the liquid injection hole 11.
It should be noted that the two opposite first surfaces 12 are large surfaces of the battery case 10, the four second surfaces 13 are small surfaces of the battery case 10, the four second surfaces 13 include two pairs of small surfaces, i.e., a first pair of small surfaces extending along the length direction of the battery case 10, and a second pair of small surfaces extending along the width direction of the battery case 10, and the areas of the first pair of small surfaces are larger than the areas of the second pair of small surfaces, but smaller than the areas of the large surfaces.
In one embodiment, as shown in fig. 1 and 2, the battery case 10 includes: a first housing piece 14; a second housing part 15, the second housing part 15 being connected to the first housing part 14 to enclose the cells 20; the first housing part 14 is a flat plate, and the liquid injection hole 11 is formed in the first housing part 14, so that the liquid injection hole 11 is convenient to arrange, and the structure of the first housing part 14 is simple, so that the forming efficiency of the battery is improved.
In one embodiment, the battery case 10 may be made of stainless steel or aluminum, and has good corrosion resistance and sufficient strength. The battery case 10 is substantially rectangular.
It should be noted that the first housing member 14 and the second housing member 15 may be provided independently, as shown in fig. 2. In some embodiments, it is not excluded that the first housing piece 14 and the second housing piece 15 may be a unitary structure, with the space for accommodating the cell 20 being formed by stamping and subsequently being hermetically connected by welding.
In one embodiment, as shown in fig. 1 and fig. 2, the battery further includes a pole assembly 30, the pole assembly 30 is disposed on the battery housing 10, and the pole assembly 30 is connected to the pole ear portion 22 of the battery cell 20; utmost point post subassembly 30 sets up along battery case 10's width direction with annotating liquid hole 11, not only can make things convenient for being connected of follow-up utmost point post subassembly 30 and busbar, and can make full use of battery case 10's space to this guarantees that battery case 10 is inside can rational arrangement electric core 20 isotructures, thereby improves battery case 10's space utilization.
In some embodiments, there are two pole assemblies 30, two pole assemblies 30 are a positive pole assembly and a negative pole assembly, respectively, each pole assembly 30 may include two poles for increasing the overcurrent capacity of the battery, there are two pole lugs 22, two pole lugs 22 are a positive pole lug and a negative pole lug, respectively, the positive pole assembly is connected with the positive pole lug, and the negative pole assembly is connected with the negative pole lug.
It should be noted that the pole assembly 30 and the battery housing 10 may be insulated from each other, for example, an insulating member may be used for insulation therebetween, or an insulating coating may be used for insulation therebetween, which is not limited herein and may be selected according to actual requirements. In certain embodiments, it is not excluded that one of the pole assemblies 30 may be electrically connected to the battery housing 10.
In one embodiment, the battery housing 10 is provided with a recess 16, and the pole assembly 30 is located in the recess 16, so that the pole assembly 30 can be prevented from occupying the stack space of the battery pack, thereby improving the energy density of the battery pack.
In one embodiment, as shown in fig. 1 and fig. 2, a recess 16 is disposed on the battery housing 10, the pole assembly 30 and the recess 16 are respectively disposed on two opposite surfaces of the battery housing 10, and the recess 16 is used for receiving the pole assembly of another battery, so that when the batteries are grouped, the pole assembly of another battery can be received in the recess 16, thereby avoiding the pole assembly from occupying a space between the two batteries, and reducing a distance between two adjacent batteries, so as to improve energy density of the battery grouping.
In one embodiment, as shown in fig. 1 and 2, the pole assembly 30 may be two, the recess 16 may be two, two pole assemblies 30 may be disposed on one first surface 12, and two recesses 16 may be disposed on the other first surface 12.
In one embodiment, the length of the cell is L,400mm L2500 mm, the width of the cell is K, the height of the cell is G,2K 50K, and/or 0.5G 20G.
Furthermore, K is more than or equal to 50mm and less than or equal to 200mm, and G is more than or equal to 10mm and less than or equal to 100mm.
Preferably, 4K ≦ L ≦ 25K, and/or, 2G ≦ K ≦ 10G.
In the battery in the above embodiment, the ratio of the length to the width of the battery is large, and further, the ratio of the width to the height of the battery is large, while sufficient energy density is ensured.
In one embodiment, the length of the battery is L, the width of the battery is K, L is more than or equal to 4K and less than or equal to 7K, namely, the ratio of the length to the width of the battery in the embodiment is larger, so that the energy density of the battery is increased, and the subsequent formation of the battery pack is facilitated.
In one embodiment, the height of the battery is G, K is more than or equal to 3G and less than or equal to 7G, and the ratio of the width to the height of the battery is larger, so that the battery is convenient to form under the condition of ensuring enough energy density.
Alternatively, the length of the cell may be 500mm to 1500mm, the width of the cell may be 80mm to 150mm, and the height of the cell may be 15mm to 35mm.
The length of the battery is a dimension in the battery length direction, the width of the battery is a dimension in the battery width direction, and the height of the battery is a dimension in the battery height direction, that is, the thickness of the battery.
In one embodiment, the batteries are laminated batteries, which are convenient to pack and can be processed to obtain batteries with longer length.
The battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.
Specifically, the battery cell 20 is a laminated battery cell, and the battery cell 20 has a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm disposed between the first pole piece and the second pole piece, so that a plurality of pairs of the first pole piece and the second pole piece are stacked to form the laminated battery cell.
Optionally, the battery may be a wound battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a wound battery core.
An embodiment of the utility model also provides a group battery, and the group battery includes above-mentioned battery.
The utility model discloses the battery of group battery of an embodiment includes battery case 10 and electric core 20, is provided with on the battery case 10 and annotates liquid hole 11, and the utmost point ear portion 22 of electric core 20 extends by the side of electric core main part 21 of electric core 20, annotates liquid hole 11 and is located one side that electric core main part 21 is close to utmost point ear portion 22, and annotates liquid hole 11 and set up in battery case 10 and the relative surface in utmost point ear portion 22's big surface to can make annotate liquid hole 11 conveniently realize annotating liquid to battery case 10 is inside. Along the width direction of electric core main part 21, the minimum vertical distance between notes liquid hole 11 and utmost point ear 22 is a, and the width of electric core main part 21 is b, and it is not less than 5 b/a is not less than 20, not only can avoid electrolyte to annotate the liquid in-process and strike utmost point ear 22, and can guarantee the width size of utmost point ear 22 to this overcurrent capacity and the charge-discharge rate of battery of guaranteeing electric core 20, thereby improve the performance of group battery.
In one embodiment, the battery pack is a battery module or a battery pack.
The battery module includes a plurality of batteries, and the battery module may further include an end plate and a side plate for fixing the plurality of batteries.
It should be noted that a plurality of batteries can be arranged in the battery box after forming the battery module, and the plurality of batteries can be fixed through the end plate and the side plate. A plurality of batteries can directly set up in the battery box, need not to pack a plurality of batteries promptly, and at this moment, can get rid of end plate and curb plate.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A battery, comprising:
the battery comprises a battery shell (10), wherein a liquid injection hole (11) is formed in the battery shell (10);
the battery cell (20) is arranged in the battery shell (10), the battery cell (20) comprises a cell main body (21) and a tab part (22), the tab part (22) extends out from the side surface of the cell main body (21), the liquid injection hole (11) is positioned on one side, close to the tab part (22), of the cell main body (21), and the liquid injection hole (11) is arranged on the surface, opposite to the large surface of the tab part (22), of the battery shell (10);
in the direction perpendicular to the extending direction of the battery cell main body (21) and the pole ear part (22), the minimum perpendicular distance between the liquid injection hole (11) and the pole ear part (22) is a, the width of the battery cell main body (21) is b, and b/a is more than or equal to 5 and less than or equal to 20.
2. The battery according to claim 1, wherein the width of the tab portion (22) in the width direction of the cell main body (21) is c,1.5 ≦ b/(c + a) ≦ 3.
3. The battery according to claim 2, characterized in that the electrolyte injection hole (11) comprises a circular hole, and an orthographic projection of the tab part (22) on the surface of the battery case (10) provided with the electrolyte injection hole (11) is arranged at a distance from the circular hole;
wherein the radius of the circular hole is r, the minimum perpendicular distance between the center of the circular hole and the pole ear (22) is d, a = d-r.
4. The battery of claim 2, wherein 20mm ≦ c ≦ 60mm.
5. The battery of claim 3, wherein 1.2mm ≦ r ≦ 2.5mm.
6. The battery of claim 1, wherein b is 70mm ≦ 120mm.
7. The battery according to any one of claims 1 to 6, wherein the distance between the end of the lug portion (22) away from the cell main body (21) and the cell main body (21) is greater than the maximum perpendicular distance between the liquid injection hole (11) and the cell main body (21).
8. The battery according to claim 7, wherein a minimum vertical distance between the pour hole (11) and the cell main body (21) in a length direction of the cell main body (21) is smaller than a minimum vertical distance between the pour hole (11) and a circumferential outer edge of the battery case (10).
9. The battery according to any one of claims 1 to 6, wherein the battery case (10) comprises two opposing first surfaces (12) and four second surfaces (13) disposed around the first surfaces (12), the first surfaces (12) having an area greater than the area of the second surfaces (13);
wherein the liquid injection hole (11) is arranged on the first surface (12).
10. The battery according to any one of claims 1 to 6, wherein the battery case (10) comprises:
a first housing piece (14);
a second housing part (15), wherein the second housing part (15) is connected to the first housing part (14) in order to enclose the electrical core (20);
the first shell member (14) is a flat plate, and the liquid injection hole (11) is formed in the first shell member (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221648724.3U CN217589344U (en) | 2022-06-28 | 2022-06-28 | Battery with a battery cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221648724.3U CN217589344U (en) | 2022-06-28 | 2022-06-28 | Battery with a battery cell |
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| CN217589344U true CN217589344U (en) | 2022-10-14 |
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| CN202221648724.3U Active CN217589344U (en) | 2022-06-28 | 2022-06-28 | Battery with a battery cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024152261A1 (en) * | 2023-01-18 | 2024-07-25 | 宁德时代新能源科技股份有限公司 | Battery cell, battery and electrical device |
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2022
- 2022-06-28 CN CN202221648724.3U patent/CN217589344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024152261A1 (en) * | 2023-01-18 | 2024-07-25 | 宁德时代新能源科技股份有限公司 | Battery cell, battery and electrical device |
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