CN220358212U - Battery cell packaging structure and battery module - Google Patents
Battery cell packaging structure and battery module Download PDFInfo
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- CN220358212U CN220358212U CN202321699086.2U CN202321699086U CN220358212U CN 220358212 U CN220358212 U CN 220358212U CN 202321699086 U CN202321699086 U CN 202321699086U CN 220358212 U CN220358212 U CN 220358212U
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- rubber layer
- insulating rubber
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- battery cell
- battery
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 22
- 229920001971 elastomer Polymers 0.000 claims abstract description 119
- 239000005060 rubber Substances 0.000 claims abstract description 119
- 238000000605 extraction Methods 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000004073 vulcanization Methods 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 claims 17
- 238000000034 method Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 81
- 239000000463 material Substances 0.000 description 18
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011231 conductive filler Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
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- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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Classifications
-
- 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
Abstract
The utility model discloses a battery cell packaging structure, which comprises a battery cell, an insulating rubber layer and an insulating sheet, wherein the surface of the battery cell comprises an electrode extraction surface and a non-electrode extraction surface; the insulating rubber layer is fixedly covered on the non-electrode outlet surface and is enclosed on the peripheral surface of at least one direction of the battery cell; the insulating sheet covers the electrode outgoing surface and is fixedly connected with the insulating rubber layer. The battery cell packaging structure adopts the insulating rubber layer to replace a blue film in the prior art, and the insulating rubber layer has excellent insulation, heat resistance, ageing resistance and puncture resistance, also has elasticity in the layer thickness direction, can buffer the exciting force born by the battery cell, and improves the fatigue resistance of the battery cell packaging structure. The utility model also discloses a battery module comprising the battery cell packaging structure. The battery cell packaging structure is used for the battery module, so that a buffer part in the existing module can be omitted, the structure of the battery module is simplified, the process steps of assembling the battery module are reduced, and the assembling efficiency of the battery module is improved.
Description
Technical Field
The utility model relates to the technical field of lithium ion batteries, in particular to a battery core packaging structure and a battery module.
Background
The existing cell packaging structure comprises a blue film adhesive tape coating layer. The base material of the blue film adhesive tape is a Polyester (PET) film, and the adhesive layer is an oily acrylic pressure-sensitive adhesive or an organic silicon pressure-sensitive adhesive resistant to lithium battery electrolyte. The blue film adhesive tape has good adhesion to the battery cell shell, is not easy to warp, and has good toughness, scratch resistance, puncture resistance and high voltage breakdown resistance.
The blue film package has the following defects: the packaging process is complex, the surface of the battery cell after the blue film is packaged is easy to generate defects such as bubbles, wrinkles and the like, and the problems such as the scratch of the blue film are easy to generate in the bonding process. In actual production, the appearance detection is required to be carried out on the battery cells packaged by the blue film, and the battery cells which have the defects and are removed through the appearance detection are required to be reworked, namely, the blue film is cleaned and removed and then reworked, so that the packaging efficiency of the battery cells is inevitably affected. In addition, when the battery is applied to a heavy-duty vehicle type, the use environment of the heavy-duty vehicle also puts higher demands on the fatigue resistance performance of the battery cell package.
Disclosure of Invention
One of the purposes of the utility model is to overcome the defects existing in the prior art and provide a battery cell packaging structure, wherein an insulating rubber layer replaces an insulating blue film, which is beneficial to improving the buffering and fatigue resistance performance of the battery cell packaging structure.
In order to achieve the technical effects, the technical scheme of the utility model is as follows: a cell package structure, comprising:
a cell, the surface comprising an electrode extraction face and a non-electrode extraction face; further comprises:
an insulating rubber layer fixedly covered on the non-electrode outlet surface and enclosed on at least one direction peripheral surface of the battery cell;
and the insulating sheet is covered on the electrode outgoing surface and is provided with an electrode perforation and an explosion-proof hole, and is fixedly connected with the insulating rubber layer.
The preferable technical scheme is that the insulating rubber layers on the surfaces of the electric cores are integrally connected.
The preferable technical scheme is that the insulating rubber layer is connected with the non-electrode leading-out surface through vulcanization adhesion.
The preferred technical scheme is that the battery cell is a square battery cell.
The electrode outgoing surface and the first end surface of the square battery cell are oppositely arranged along a first direction;
the insulating rubber layer comprises a first covering part and a second covering part, the first covering part is overlapped on the first end face, and the second covering part is overlapped on the circumferential side face of the square battery cell extending along the first direction; the first covering part and the second covering part are connected in a sealing way.
The preferable technical proposal is that the thickness of the insulating rubber layer is 0.5-5 mm.
The preferable technical scheme is that the material of the insulating rubber layer is heat conducting rubber.
The preferable technical scheme is that the insulating rubber layer is internally embedded with a reinforcing framework.
The second objective of the present utility model is to provide a battery module, which includes the above-mentioned battery cell packaging structure.
The preferable technical scheme is that the battery cell packaging structure further comprises an end plate, wherein the end plate is in butt joint or fixed connection with at least one insulating rubber layer of the battery cell packaging structure.
The utility model has the advantages and beneficial effects that:
the battery cell packaging structure adopts the insulating rubber layer to replace a blue film in the prior art, and the insulating rubber layer has excellent insulation, heat resistance, ageing resistance and puncture resistance, also has elasticity in the layer thickness direction, can buffer the exciting force born by the battery cell, and improves the fatigue resistance of the battery cell packaging structure;
the battery cell packaging structure is used for the battery module, so that a buffer part in the existing module can be omitted, the structure of the battery module is simplified, the process steps of assembling the battery module are reduced, and the assembling efficiency of the battery module is improved.
Drawings
Fig. 1 is a schematic perspective view of a square cell;
FIG. 2 is another schematic perspective view of a square cell;
FIG. 3 is a schematic perspective view of an embodiment of a package structure;
FIG. 4 is another perspective view of an embodiment of a die package;
fig. 5 is a schematic perspective view of a battery module according to an embodiment;
in the figure: 1. a battery cell; 2. an insulating rubber layer; 201. a first covering portion; 202. a second covering portion; 3. an insulating sheet; 301. perforating an electrode; 302. explosion-proof holes; 4. a battery module; 401. an end plate; a. an electrode extraction surface; f. a first end face.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.
Examples
As shown in fig. 1, the battery cell packaging structure of the embodiment comprises a battery cell 1, an insulating rubber layer 2 and an insulating sheet 3; the surface of the cell 1 comprises an electrode extraction surface and a non-electrode extraction surface; the insulating rubber layer 2 is fixedly covered on the non-electrode outlet surface and is enclosed on at least one direction peripheral surface of the battery cell 1; the insulating sheet 3 is provided on the electrode outlet surface, and is provided with an electrode perforation 301 and a explosion-proof hole 302, and the insulating sheet 3 is fixedly connected with the insulating rubber layer 2.
The surface of the cell 1 other than the electrode extraction surface is a non-electrode extraction surface. The electrode extraction surface is a surface (usually a plane) with positive and negative electrodes, for example, positive and negative electrodes of a cylindrical cell and a blade cell are positioned on two opposite end surfaces in the length direction, the two opposite end surfaces in the length direction are electrode extraction surfaces, and the circumferential side surfaces extending in the length direction are non-electrode extraction surfaces; for example, the square battery core is in an approximately rectangular structure, the positive electrode and the negative electrode are positioned on the same end face, the end face is the electrode extraction face, and the other five planar surfaces of the square battery core except the end face are non-electrode extraction faces.
It is understood that the package structure of the battery cell 1 only includes one battery cell 1. The battery cell 1 is provided with a positive plate, a negative plate, a diaphragm, electrolyte and a shell of the battery cell 1.
The insulating rubber layer 2 is provided on the non-electrode lead-out surface. Alternatively, the insulating rubber layer 2 is adhered to the non-electrode-drawing surface, or fixed to the non-electrode-drawing surface by a known rubber coating method such as dipping, coating, vulcanizing, or the like. The insulating rubber layer 2 is arranged in different modes, and the structure of the insulating rubber layer is also different: when the sheet-shaped insulating rubber layer 2 is adhered to the non-electrode leading-out surface, the splicing edges of the insulating rubber layer 2 at the connecting edges between the non-electrode leading-out surfaces can be selected to be adhered and connected; when the insulating rubber layer 2 is provided by dipping, coating, vulcanizing, or the like, the insulating rubber layer 2 may be provided integrally with each other as needed at the connecting edge between the non-electrode lead-out surfaces.
The insulating rubber layer 2 is enclosed and arranged on the peripheral side surface of at least one direction of the battery cell 1, the enclosed and arranged means that the insulating rubber layer 2 is enclosed and formed into a closed shape in the peripheral direction of the peripheral side surface, and the closed shape can be selected as an integral closed shape or a closed shape connected end to end. The peripheral surface consists of a cylindrical cell and a non-electrode outlet surface of a blade cell, or is enclosed around the electrode outlet surface of a square cell.
In fig. 1-2, the electrode extraction surface is the a surface, the non-electrode extraction surface is the b, c, d, e, f surface, and the peripheral surface is b, c, d, e.
The connection structure of the insulating sheet 3 and the insulating rubber layer 2 includes, but is not limited to, the following four:
1. the insulating sheet 3 has first surfaces opposite in thickness direction, and edges of the first surfaces are hermetically connected with the insulating rubber layer 2;
2. the insulating sheet 3 has a side surface extending in the thickness direction, and the side surface of the insulating sheet 3 is hermetically connected with the insulating rubber layer 2;
3. the insulating sheet 3 has a first surface edge and a side surface which are both in sealing connection with the insulating rubber layer 2.
4. The first surface of the insulating sheet 3 facing the electrode extraction surface is provided with a boss or a recess, and the boss and the recess of the insulating sheet 3 are in concave-convex fit with the insulating rubber layer 2.
The insulating sheet 3 and the insulating rubber layer 2 can be bonded and connected by structural adhesive. Preferably, the insulating sheet 3 is a planar sheet material, obtained by sheet punching.
In another preferred embodiment, as shown in fig. 3 to 4, the insulating rubber layers 2 on the surfaces of the cells 1 are integrally connected.
In the embodiment, the insulating rubber layer 2 of the cylindrical battery cell and the blade battery cell can be selected as a rubber cylinder body fixedly connected with the shell of the battery cell 1 after sleeving, or can be obtained by coating liquid rubber materials and vulcanizing films and attaching the films to the circumferential side surfaces of the cylindrical battery cell and the blade battery cell; the insulating rubber layer 2 of the square battery cell is a rubber shell which is provided with an opening and fixedly connected with the shell of the battery cell 1 after being sleeved, or is adhered to the non-electrode outlet surface of the square battery cell through coating and dipping of liquid rubber materials, or is obtained through vulcanizing the non-electrode outlet surface of the square battery cell through a rubber sheet.
The insulating rubber layer 2 is integrally connected, and the attaching property of the insulating rubber layer 2 is excellent based on the rubber elasticity and the high friction coefficient. Compared with the bonded head-to-tail connection enclosing structure, the integrated connection structure has lower probability of breaking, breakage and tilting.
In some embodiments, the insulating rubber layer 2 is attached to the non-electrode lead-out face by vulcanization adhesion.
The insulating rubber layer 2 is integrally connected with the shell of the battery cell 1 through vulcanization, and the connecting structure is more stable and reliable.
Furthermore, the vulcanization is thermal vulcanization, the vulcanized raw rubber forms a space three-dimensional layer structure covered on the non-electrode outlet surface, and the vacuumizing of the mold cavity in the thermal vulcanization process is also beneficial to reducing the air bubble quantity between the insulating rubber layer 2 and the shell of the battery cell 1, increasing the adhesive force between the insulating rubber layer 2 and the shell of the battery cell 1 and avoiding the use of pressure-sensitive adhesive; the surface of the vulcanized insulating rubber layer 2 is flat and has no wrinkles, so that the apparent detection of the encapsulation structure of the battery cell 1 can be omitted, and the encapsulation reworking rate of the battery cell 1 is effectively reduced.
Specifically, the vulcanization can be selected from vulcanization of the shell, or the vulcanization is performed after the positive and negative plates, the diaphragm and the cover plate are assembled with the shell and before liquid injection. The assembling step after vulcanizing the housing requires holding the housing a plurality of times, and there is a possibility that the insulating rubber layer 2 is damaged. Therefore, the vulcanization is preferably carried out before the injection after the assembly of the positive and negative plates, the diaphragm and the cover plate with the shell. The vulcanization before liquid injection is to avoid adverse effect of vulcanization temperature on the electrolyte.
In another preferred embodiment, as shown in fig. 3-4, the cells 1 are square cells. The square battery core is provided with more non-electrode outgoing surfaces; in addition to the insulating rubber layer 2 of the circumferential side surface, the end surface opposite to the electrode lead-out surface is also provided with an insulating rubber layer 2, that is, the insulating rubber layer 2 of the end surface can buffer the exciting force in the rubber layer thickness direction.
In another preferred embodiment, as shown in fig. 1-4, the electrode lead-out face a of the square cell is disposed opposite the first end face f in a first direction; the insulating rubber layer 2 comprises a first covering part 201 and a second covering part 202, wherein the first covering part 201 is overlapped on the first end surface f, and the second covering part 202 is overlapped on the square cell circumferential side surface b, c, d, e extending along the first direction; the first covering portion 201 and the second covering portion 202 are hermetically connected.
The first direction is the height direction of the square battery cell, the long side and the wide side extension direction of the first end face of the square battery cell respectively correspond to the length direction and the width direction of the square battery cell, the insulating rubber layer 2 formed by combining the first covering part 201 and the second covering part 202 can provide the buffer effect in the length direction, the width direction and the height direction for the square battery cell, so that the battery cell 1 can meet the application scene of stronger exciting force of a heavy-duty vehicle, and the service life of the battery cell 1 is prolonged.
In some embodiments, the thickness of the insulating rubber layer 2 is 0.5 to 5mm, specifically, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc., and two adjacent dot values are selected as the data-interval dot values of the minimum value and the maximum value. Further, the thickness of the insulating rubber layer 2 is 1 to 4mm. The thickness of the insulating rubber layer 2 needs to be specifically determined in combination with the elasticity, puncture resistance, and the like of the rubber material.
In addition, the thickness of the insulating rubber layer 2 on the same cell 1 surface and different non-electrode extraction surfaces can be the same or different. The thickness difference of the insulating rubber layer 2 is determined according to the stress of the battery cell 1 in the actual use state. For example, in the battery module stacking structure, the thickness of the insulating rubber layer 2 of the first end face of the square battery cell is greater than that of the insulating rubber layer 2 of the circumferential side face of the square battery cell, so that the shock excitation force buffering effect in the height direction of the square battery cell is optimized.
It can be understood that, on the surface of the same cell 1, the materials of the insulating rubber layers 2 of different non-electrode leading-out surfaces can also be selected to be different in the same process, for example, the material of the insulating rubber layer 2 of the circumferential side surface of the square cell is a first rubber, the material of the insulating rubber layer 2 of the first end surface of the square cell is a second rubber, and the base materials of the two rubbers are the same. The insulating rubber layer 2 comprising two rubber materials can be prepared by twice vulcanization, for example, the first vulcanization is performed to prepare the insulating rubber layer 2 with the circumferential side surface of the square battery cell, and the second vulcanization is performed to prepare the insulating rubber layer 2 with the first end surface. The first end face and the insulating rubber layer 2 of the circumferential side face are integrally connected in the secondary vulcanization process.
The difference of the first rubber material and the second rubber material is specifically determined according to the application scene of the battery cell 1, and can be selected as elasticity difference and strength difference. Taking the elasticity of the second rubber as an example, which is better than that of the first rubber, the vibration exciting force buffering effect in the height direction of the square battery cell can be optimized based on the same thickness of the insulating rubber layer 2.
In some embodiments, the material of the insulating rubber layer 2 is a heat conductive rubber. The heat conductive rubber is rubber in which a heat conductive filler is added to a rubber base material. In view of the insulating properties of the rubber layer, the thermally conductive filler is preferably an insulating material including, but not limited to, nitrides, carbides, and metal oxides. The heat conduction rubber is beneficial to accelerating heat dissipation of the battery cell 1 and improving the safety coefficient of the battery cell 1.
It will be appreciated that the insulating rubber layer 2 may alternatively be rubber or silicone rubber.
In some embodiments, the insulating rubber layer 2 is embedded with a reinforcing skeleton.
The reinforcing skeleton functions to reinforce the rubber layer, for example, to improve the tensile strength and puncture resistance of the insulating rubber layer 2. Also, in view of the insulating property of the rubber layer, the reinforcing frame is preferably an insulating material such as fiberglass mesh, carbon fiber mesh, aramid mesh, or the like. The reinforced framework is beneficial to further improving the strength of the shell so as to further reduce the influence of the thermal runaway battery cell on other battery cells around the thermal runaway battery cell. Further, the material of the insulating rubber layer may be preferably a functional rubber material such as flame retardant rubber which is advantageous in reducing the influence of thermal runaway.
Taking a square cell as an example, the projection of the reinforcing skeleton in the thickness direction of the insulating rubber layer 2 coincides with the circumferential side face and the first end face of the square cell, or the projection of the reinforcing skeleton corresponds to only a part of the circumferential side face and the first end face, for example, a weak strength region.
Embodiment the battery module 4 includes the above-mentioned cell 1 packaging structure, as shown in fig. 5, in another preferred embodiment, the battery module 4 includes an end plate 401, and the end plate 401 is abutted or fixedly connected with the insulating rubber layer 2 of at least one cell 1 packaging structure. Optionally, the end plate 401 is adhesively connected to the adjacent cell 1.
In the present embodiment, the battery cells 1 in the battery module 4 are stacked in the second direction, and the end plate 401 is disposed at the side of the stacked battery cells 1 in the second direction.
In the present embodiment, the number of the battery cells 1 having the insulating rubber layer 2 package structure in the battery module 4 is one, two, for example, only the battery cells 1 adjacent to the end plate 401 have the insulating rubber layer 2 package structure; or as shown in fig. 5, all the battery cells 1 in the battery module 4 are packaged with the insulating rubber layer 2.
Based on the buffering effect of the insulating rubber layer 2 on the surface of the battery cell 1, the existing insulating sheet, foam, buffering heat insulation pad and other components can be omitted in the battery module 4, and the number of components and assembly steps of the battery module 4 is reduced. The insulating sheet and foam are originally arranged between the adjacent end plates 401 and the adjacent electric cores 1, and the buffer heat insulation pad is originally arranged between the adjacent electric cores 1.
Further, in the same battery module 4, the thickness/material of the insulating rubber layer 2 on the same orientation surface of different battery cells 1 may be the same or different. Depending on the differences in the stress of the different cells 1 in the battery module 4.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (10)
1. A cell package structure, comprising:
a cell, the surface comprising an electrode extraction face and a non-electrode extraction face; characterized by further comprising:
an insulating rubber layer fixedly covered on the non-electrode outlet surface and enclosed on at least one direction peripheral surface of the battery cell;
and the insulating sheet is covered on the electrode outgoing surface and is provided with an electrode perforation and an explosion-proof hole, and is fixedly connected with the insulating rubber layer.
2. The cell package structure of claim 1, wherein the insulating rubber layer of the cell surface is integrally connected.
3. The cell package structure of claim 1, wherein the insulating rubber layer is attached to the non-electrode lead-out face by vulcanization adhesion.
4. The cell package structure of claim 1, wherein the cell is a square cell.
5. The cell package structure of claim 4, wherein the electrode lead-out face and the first end face of the square cell are disposed opposite to each other along a first direction;
the insulating rubber layer comprises a first covering part and a second covering part, the first covering part is overlapped on the first end face, and the second covering part is overlapped on the circumferential side face of the square battery cell extending along the first direction; the first covering part and the second covering part are connected in a sealing way.
6. The cell package structure of claim 1, wherein the thickness of the insulating rubber layer is 0.5-5 mm.
7. The battery cell package structure according to claim 1, wherein the insulating rubber layer is made of heat-conducting rubber.
8. The cell package structure of claim 1, wherein the insulating rubber layer is embedded with a reinforcing skeleton.
9. A battery module comprising at least two cell packaging structures according to any one of claims 1 to 8.
10. The battery module of claim 9, further comprising an end plate that is in abutment or fixed connection with the insulating rubber layer of at least one of the cell packages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699086.2U CN220358212U (en) | 2023-06-30 | 2023-06-30 | Battery cell packaging structure and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699086.2U CN220358212U (en) | 2023-06-30 | 2023-06-30 | Battery cell packaging structure and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220358212U true CN220358212U (en) | 2024-01-16 |
Family
ID=89505014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321699086.2U Active CN220358212U (en) | 2023-06-30 | 2023-06-30 | Battery cell packaging structure and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220358212U (en) |
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2023
- 2023-06-30 CN CN202321699086.2U patent/CN220358212U/en active Active
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