CN220086198U - Battery and battery device - Google Patents
Battery and battery device Download PDFInfo
- Publication number
- CN220086198U CN220086198U CN202320903071.7U CN202320903071U CN220086198U CN 220086198 U CN220086198 U CN 220086198U CN 202320903071 U CN202320903071 U CN 202320903071U CN 220086198 U CN220086198 U CN 220086198U
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- Prior art keywords
- battery
- top surface
- insulating film
- inner insulating
- cover plate
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- 238000005452 bending Methods 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 description 15
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008092 positive effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to the technical field of batteries, in particular to a battery and a battery device, wherein the battery comprises a shell, a battery core, a cover plate assembly and an inner insulating film, the battery core is accommodated in the shell, the battery core is provided with a top surface, a bottom surface and a side surface connected between the top surface and the bottom surface, the cover plate assembly is arranged on the top surface of the battery core, and the cover plate assembly is provided with two pole assemblies which are arranged at intervals along a first direction; the inner insulating film comprises a top surface part and a first side surface part, the top surface part is fixed on the bottom surface of the cover plate assembly, the first side surface part is connected with the edge of the top surface part in the first direction and is arranged on the side surface of the battery cell, and the joint of the top surface part and the first side surface part is provided with a bending structure. Through the structural design, on the basis of realizing the insulating effect of the battery, the utility model can provide a buffer effect at the joint of the top surface part and the first side surface part of the inner insulating film by utilizing the bending structure, avoid tearing of the inner insulating film and ensure the insulating reliability of the battery.
Description
Technical Field
The present utility model relates to the field of battery technologies, and in particular, to a battery and a battery device.
Background
In the design scheme of the existing battery, the surface of the battery core is provided with an inner insulating film, the inner insulating film specifically covers the top surface and the side surface of the battery core, and the joint of the part of the inner insulating film covering the top surface and the part of the inner insulating film covering the side surface is easy to tear due to bending, so that the insulation failure of the battery core is caused.
Disclosure of Invention
It is a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery with improved insulation reliability.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to one aspect of the present utility model, there is provided a battery including a case, a battery cell accommodated in the case, the battery cell having a top surface, a bottom surface, and a side surface connected between the top surface and the bottom surface, a cap plate assembly provided on the top surface of the battery cell, the cap plate assembly being provided with two post assemblies arranged at intervals in a first direction; the inner insulating film comprises a top surface part and a first side surface part, the top surface part is fixed on the bottom surface of the cover plate assembly, the first side surface part is connected with the edge of the top surface part in the first direction and is arranged on the side surface of the battery cell, and the joint of the top surface part and the first side surface part is provided with a bending structure.
According to the technical scheme, the battery provided by the utility model has the advantages and positive effects that:
the battery provided by the utility model comprises an inner insulating film, wherein the inner insulating film comprises a top surface part and a first side surface part, the top surface part is fixed on the bottom surface of a cover plate assembly, the first side surface part is connected with the edge of the top surface part in a first direction and is arranged on the side surface of a battery core, the first direction is the interval arrangement direction of two pole column assemblies of the cover plate assembly, and the joint of the top surface part and the first side surface part is provided with a bending structure. Through the structural design, the cover plate assembly and the top surface of the battery cell can be insulated by the top surface part, and the insulating effect of the side surface of the battery can be improved by the first side surface part. On the basis, the utility model can provide a buffer effect at the joint of the top surface part and the first side surface part of the inner insulating film by utilizing the bending structure, avoid tearing of the inner insulating film and ensure the insulating reliability of the battery.
Another main object of the present utility model is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery with improved insulation reliability.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to another aspect of the present utility model, there is provided a battery device, including the battery according to the present utility model.
As can be seen from the above technical solutions, the battery device provided by the present utility model has the following advantages and positive effects:
according to the battery device provided by the utility model, the tearing of the inner insulating film of the battery can be avoided, and the insulating reliability of the battery can be ensured.
Drawings
Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:
fig. 1 is a schematic perspective view of a battery according to an exemplary embodiment;
fig. 2 is an exploded perspective view of the battery shown in fig. 1;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
fig. 4 is a plan-development schematic view of the inner insulating film shown in fig. 2;
fig. 5 is a schematic perspective view of a battery according to another exemplary embodiment;
fig. 6 is an exploded perspective view of the battery shown in fig. 5;
fig. 7 is a schematic perspective view of a battery according to still another exemplary embodiment;
fig. 8 is an exploded perspective view of the battery shown in fig. 7.
The reference numerals are explained as follows:
100. a battery cell;
101. a top surface;
102. a first side;
103. a second side;
200. a cover plate assembly;
210. a pole assembly;
220. a liquid injection hole;
230. an explosion-proof structure;
300. an inner insulating film;
310. a top surface portion;
311. a first through hole;
312. a second through hole;
313. a weak portion;
320. a first side surface portion;
321. a bending structure;
330. a second side surface portion;
340. a bottom surface portion;
350. a bending part;
x, a first direction;
y. second direction.
Detailed Description
Exemplary embodiments that embody features and advantages of the present utility model are described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and drawings are intended to be illustrative in nature and not to be limiting.
In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "over," "between," "within," and the like may be used in this description to describe various exemplary features and elements of the utility model, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.
Referring to fig. 1, there is representatively illustrated a schematic perspective view of a battery according to the present utility model, in which a combined structure of a battery cell 100, a cap assembly 200 and an inner insulation film 300, i.e., a case is hidden, is specifically illustrated. In this exemplary embodiment, the battery according to the present utility model is described as applied to a vehicle-mounted battery. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to adapt the relevant designs of the present utility model to other types of battery devices, and such changes are still within the principles of the battery presented herein.
As shown in fig. 1, the battery according to the present utility model includes a case, a battery cell 100, a cap plate assembly 200, and an inner insulation film 300. Referring to fig. 2 to 4 in combination, an exploded perspective view of a battery is representatively illustrated in fig. 2, in which a cap plate assembly 200, an inner insulating film 300 and a battery cell 100 are separated; an enlarged schematic view of portion a of fig. 2 is representatively illustrated in fig. 3; a schematic plan-view development of the inner insulating film 300 is representatively illustrated in fig. 4. The structure, connection mode and functional relationship of the main components of the battery according to the present utility model will be described in detail with reference to the above drawings.
As shown in fig. 1 to 4, in an embodiment of the present utility model, the battery cell 100 is accommodated in a case (not shown in the drawings), and the battery cell 100 has a top surface 101, a bottom surface, and side surfaces connected between the top surface 101 and the bottom surface. The cover assembly 200 is disposed on the top surface 101 of the battery cell 100, and the cover assembly 200 is provided with two post assemblies 210 arranged at intervals along the first direction X. On the basis, the inner insulating film 300 includes a top surface portion 310 and a first side surface portion 320, the top surface portion 310 is fixed on the bottom surface of the cover assembly 200, the first side surface portion 320 is connected to the edge of the top surface portion 310 in the first direction X, the first side surface portion 320 is disposed on the side surface of the battery cell 100, and a connection portion between the top surface portion 310 and the first side surface portion 320 has a bending structure 321. Through the above structural design, the top surface part 310 can be used for realizing insulation between the cover plate assembly 200 and the top surface 101 of the battery cell 100, and the first side surface part 320 can be used for improving the insulation effect of the side surface of the battery. On the basis, the utility model can provide a buffer effect at the joint of the top surface part 310 and the first side surface part 320 of the inner insulating film 300 by utilizing the bending structure 321, avoid tearing of the inner insulating film 300 and ensure the insulating reliability of the battery.
As shown in fig. 3, in an embodiment of the present utility model, the bending structure 321 of the inner insulating film 300 may have a zigzag shape. In some embodiments, the bending structure 321 of the inner insulating film 300 may also have a wavy shape or other shapes, which is not limited to the present embodiment.
As shown in fig. 4, in an embodiment of the present utility model, the post assembly 210 partially protrudes from the bottom surface of the cap assembly 200, i.e., a portion of the post assembly 210 protrudes from the bottom surface of the cap assembly 200 toward the battery cell 100. On this basis, the top surface portion 310 of the inner insulation film 300 may be opened with a first through hole 311, and a portion of the post assembly 210 protruding from the bottom surface of the cap assembly 200 may pass through the first through hole 311. The portion of the pole assembly 210 protruding from the bottom surface of the cover assembly 200 is in interference fit with the first through hole 311. Through the above structural design, the connection between the electrode post assembly 210 and the electrode tab of the battery core 100 can be ensured, and meanwhile, the connection strength between the inner insulating film 300 and the cover plate assembly 200 is further enhanced by the interference fit between the first through hole 311 and the electrode post assembly 210.
As shown in fig. 4, in an embodiment of the present utility model, the cover assembly 200 is further provided with a liquid injection hole 220, and the bottom surface of the cover assembly 200 is provided with a liquid injection boss, that is, the liquid injection boss protrudes from the bottom surface of the cover assembly 200 toward the battery cell 100, and the liquid injection hole 220 penetrates through the liquid injection boss. On this basis, the top surface 310 of the inner insulating film 300 is provided with a second through hole 312, the liquid injection boss passes through the second through hole 312, and the liquid injection boss is in interference fit with the second through hole 312. Through the structural design, the utility model can ensure that the liquid injection hole 220 is not blocked, ensure the smooth liquid injection of the battery, and further strengthen the connection strength of the inner insulating film 300 and the cover plate assembly 200 by utilizing the interference fit between the second through hole 312 and the liquid injection boss.
As shown in fig. 4, in one embodiment of the present utility model, the cover plate assembly 200 is further provided with an explosion-proof structure 230, such as, but not limited to, an explosion-proof valve or the like. On this basis, the top surface portion 310 of the inner insulation film 300 may be provided with a weak portion 313, and the position of the weak portion 313 corresponds to the position of the explosion-proof structure 230. The thickness of the weak portion 313 is smaller than the thickness of the rest of the top portion 310, so that when the battery is thermally out of control, the weak portion 313 will melt before the rest of the top portion 310, so that the heat flow in the battery cell 100 is relieved via the explosion-proof structure 230. Through the structural design, the pressure relief function of the battery can be guaranteed, and the safety of the battery is improved. In some embodiments, the thickness of the weak portion 313 may be the same as the thickness of the rest of the top surface portion 310, and the material of the weak portion 313 may be melted down to be lower than the melting point of the material of the rest of the top surface portion 310, or the thickness of the weak portion 313 may be smaller than the thickness of the rest of the top surface portion 310 and the melting point of the material of the weak portion 313 may be lower than the melting point of the material of the rest of the top surface portion 310, which may not be limited to this embodiment, all of the above designs may implement the function that the weak portion 313 melts before the rest of the top surface portion 310 when the thermal runaway of the battery occurs.
As shown in fig. 1 and 2, in an embodiment of the present utility model, the sides of the battery cell 100 may include two first sides 102 and two second sides 102, the two first sides 102 are spaced apart along a first direction X, the two first sides 102 are perpendicular to the first direction X, the two second sides 102 are spaced apart along a second direction Y perpendicular to the first direction X, and the two second sides 102 are perpendicular to the second direction Y. Wherein the surface area of the second side 102 is larger than the surface area of the first side 102, in other words, the second side 102 corresponds to the "large face" of the battery. On this basis, the first side 320 of the inner insulation film 300 may be disposed on the first side 102 of the battery cell 100.
As shown in fig. 1, based on the structural design that the first side portion 320 of the internal insulation film 300 is disposed on the first side 102 of the battery cell 100, in an embodiment of the present utility model, the first side portion 320 may cover only a partial area of the first side 102 along the height direction of the battery cell 100. In some embodiments, the first side surface 320 may also cover the entire area of the first side surface 102, which is not limited in this embodiment.
Referring to fig. 5 and 6, a schematic perspective view of a battery capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 5; fig. 6 representatively shows an exploded perspective view of the battery shown in fig. 5.
As shown in fig. 5 and 6, taking still an example of a structural design in which the first side portion 320 of the inner insulating film 300 is disposed on the first side 102 of the battery cell 100, in an embodiment of the present utility model, the inner insulating film 300 may further include a second side portion 330, the second side portion 330 is connected to an edge of the top portion 310 in the second direction Y, and the second side portion 330 is disposed on the second side 102 of the battery cell 100. Through the above structural design, the second side surface 330 of the inner insulating film 300 can be utilized to provide an insulating function for the second side surface 102 of the battery cell 100, so as to further improve the insulating performance of the battery.
As shown in fig. 6, based on the structural design that the inner insulating film 300 includes the second side portion 330, in an embodiment of the present utility model, the inner insulating film 300 may further include a bottom portion 340, the bottom portion 340 is connected to the bottom edge of the second side portion 330, and the top portion 310 is disposed on the bottom surface of the battery cell 100. Through the above structural design, the bottom surface 340 of the inner insulating film 300 can be utilized to provide an insulating function for the bottom surface of the battery cell 100, so as to further improve the insulating performance of the battery.
Referring to fig. 7 and 8, a schematic perspective view of a battery capable of embodying the principles of the present utility model in yet another exemplary embodiment is representatively illustrated in fig. 7; fig. 8 representatively illustrates an exploded perspective view of the battery illustrated in fig. 5.
As shown in fig. 7 and 8, in still the structural design of the inner insulating film 300 including the second side portion 330, in an embodiment of the present utility model, the inner insulating film 300 may further include a bending portion 350, the bending portion 350 is connected to an edge of the second side portion 330 in the first direction X, and the bending portion 350 is disposed on the first side 102 of the battery cell 100. Through the above structural design, the present utility model can further provide an insulation function for the second side 102 of the battery cell 100 by using the bending portion 350 of the inner insulation film 300, so as to further improve the insulation performance of the battery.
It should be noted herein that the batteries shown in the drawings and described in this specification are only a few examples of the wide variety of batteries that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery shown in the drawings or described in this specification.
In summary, the battery according to the present utility model includes the inner insulating film 300, the inner insulating film 300 includes the top portion 310 and the first side portion 320, the top portion 310 is fixed on the bottom surface of the cover assembly 200, the first side portion 320 is connected to the edge of the top portion 310 in the first direction X and is disposed on the side surface of the battery cell 100, the first direction X is the direction of the spacing arrangement of the two post assemblies 210 of the cover assembly 200, and the connection between the top portion 310 and the first side portion 320 has the bending structure 321. Through the above structural design, the top surface part 310 can be used for realizing insulation between the cover plate assembly 200 and the top surface 101 of the battery cell 100, and the first side surface part 320 can be used for improving the insulation effect of the side surface of the battery. On the basis, the utility model can provide a buffer effect at the joint of the top surface part 310 and the first side surface part 320 of the inner insulating film 300 by utilizing the bending structure 321, avoid tearing of the inner insulating film 300 and ensure the insulating reliability of the battery.
Based on the above detailed description of several exemplary embodiments of the battery set forth in the present utility model, an exemplary embodiment of the battery device set forth in the present utility model will be described below.
In one embodiment of the present utility model, the battery device according to the present utility model includes the battery according to the present utility model and described in detail in the above embodiment.
It should be noted herein that the battery devices shown in the drawings and described in this specification are only a few examples of the wide variety of battery devices that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery device shown in the drawings or described in this specification.
In summary, in the battery device provided by the utility model, by adopting the battery provided by the utility model, the tearing of the inner insulating film of the battery can be avoided, and the insulating reliability of the battery can be ensured.
Exemplary embodiments of the battery and the battery device according to the present utility model are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.
While the utility model has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.
Claims (9)
1. The battery is characterized by comprising a shell, a battery core, a cover plate assembly and an inner insulating film, wherein the battery core is accommodated in the shell, the battery core is provided with a top surface, a bottom surface and a side surface connected between the top surface and the bottom surface, the cover plate assembly is arranged on the top surface of the battery core, and the cover plate assembly is provided with two pole assemblies which are arranged at intervals along a first direction; the inner insulating film comprises a top surface part and a first side surface part, the top surface part is fixed on the bottom surface of the cover plate assembly, the first side surface part is connected with the edge of the top surface part in the first direction and is arranged on the side surface of the battery cell, the joint of the top surface part and the first side surface part is provided with a bending structure, and the bending structure is in a zigzag shape or a wavy shape.
2. The battery of claim 1, wherein the post assembly portion protrudes from a bottom surface of the cap assembly; the top surface part of the inner insulating film is provided with a first through hole, the part of the pole component protruding out of the bottom surface of the cover plate component penetrates through the first through hole, and the part of the pole component protruding out of the bottom surface of the cover plate component is in interference fit with the first through hole.
3. The battery of claim 1, wherein the cover plate assembly is further provided with a liquid injection hole, a liquid injection boss is arranged on the bottom surface of the cover plate assembly, and the liquid injection hole penetrates through the liquid injection boss; the top surface of the inner insulating film is provided with a second through hole, the liquid injection boss penetrates through the second through hole, and the liquid injection boss is in interference fit with the second through hole.
4. The battery of claim 1, wherein the cover assembly is further provided with an explosion-proof structure; wherein, the top surface part of the inner insulating film is provided with a weak part, and the position of the weak part corresponds to the position of the explosion-proof structure; wherein the thickness of the weakened portion is smaller than the thickness of the rest of the top surface portion and/or the melting point of the material of the weakened portion is lower than the melting point of the material of the rest of the top surface portion.
5. The battery of any one of claims 1-4, wherein the side surfaces of the cell comprise two first side surfaces and two second side surfaces, the two first side surfaces are spaced apart along the first direction and perpendicular to the first direction, the two second side surfaces are spaced apart along a second direction perpendicular to the first direction and perpendicular to the second direction, and the surface area of the second side surfaces is greater than the surface area of the first side surfaces; wherein, first side portion set up in first side.
6. The battery according to claim 5, wherein the inner insulating film further includes a second side surface portion that is connected to an edge of the top surface portion in the second direction and is provided at the second side surface.
7. The battery according to claim 6, wherein the inner insulating film further comprises a bottom surface portion connected to a bottom edge of the second side surface portion and provided to a bottom surface of the electric cell.
8. The battery according to claim 6, wherein the inner insulating film further includes a bent portion connected to an edge of the second side portion in the first direction and disposed at the first side of the battery cell.
9. A battery device comprising the battery according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320903071.7U CN220086198U (en) | 2023-04-20 | 2023-04-20 | Battery and battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320903071.7U CN220086198U (en) | 2023-04-20 | 2023-04-20 | Battery and battery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220086198U true CN220086198U (en) | 2023-11-24 |
Family
ID=88820771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320903071.7U Active CN220086198U (en) | 2023-04-20 | 2023-04-20 | Battery and battery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220086198U (en) |
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2023
- 2023-04-20 CN CN202320903071.7U patent/CN220086198U/en active Active
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