CN221041443U - Explosion-proof structure of battery cell, battery cell cover plate, battery cell shell and battery cell - Google Patents
Explosion-proof structure of battery cell, battery cell cover plate, battery cell shell and battery cell Download PDFInfo
- Publication number
- CN221041443U CN221041443U CN202322678332.2U CN202322678332U CN221041443U CN 221041443 U CN221041443 U CN 221041443U CN 202322678332 U CN202322678332 U CN 202322678332U CN 221041443 U CN221041443 U CN 221041443U
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- explosion
- proof
- battery cell
- cover plate
- sheet
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- 230000001681 protective effect Effects 0.000 claims abstract description 36
- 239000000126 substance Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000004880 explosion Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides an explosion-proof structure of a battery cell, a battery cell cover plate, a battery cell shell and a battery cell, belonging to the technical field of secondary batteries, comprising the following steps: the base member portion has explosion-proof through-hole, explosion-proof piece, fixed connection in base member portion and seals explosion-proof through-hole, and the protection piece is connected in base member portion, and the protection piece is at least partly covered explosion-proof piece along the orthographic projection on base member portion thickness direction, and wherein, the protection piece includes the protection piece body and sets up the connection structure on the protection piece body, and the protection piece body passes through connection structure and is connected with base member portion. In the utility model, the connecting structure is a mechanical structure, and compared with the bonding connection, the connecting structure is less influenced when being impacted by high-temperature and high-pressure substances, the connection between the protection sheet and the base body part is more reliable, and the protection sheet is prevented from being blown off by the high-temperature and high-pressure substances. The protective sheet is connected with the base body part through the connecting structure, and a film on the back adhesive is not required to be torn off, so that the process steps are simplified, and the production efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of secondary batteries, and particularly relates to an explosion-proof structure of a battery cell, a battery cell cover plate, a battery cell shell and a battery cell.
Background
The existing power battery generally adopts secondary batteries such as lithium ion batteries and the like, is used as an energy storage unit of equipment such as an electric automobile, an energy storage station and the like, and has the advantages of large energy storage capacity, high energy density, recycling and the like. The single power battery generally comprises a plurality of battery cells, the cover plate of each battery cell is generally provided with an explosion-proof through hole, the explosion-proof through hole is provided with an explosion-proof sheet, when the internal pressure or temperature of each battery cell exceeds the set threshold value of the explosion-proof sheet, the explosion-proof sheet breaks, and high-temperature and high-pressure substances in the battery cells can be discharged through the explosion-proof through holes, so that explosion caused by the overhigh internal pressure or temperature of the battery cells is avoided. The rupture disc is generally fragile and therefore a protective disc is typically provided on the disc to protect the disc. The current protective sheet is usually stuck on the cover plate by back glue, and when the back glue is stuck, the adhesive film on the back glue is required to be torn off for sticking, so that the steps are complicated. Meanwhile, the bonding is mainly realized through intermolecular force, when the protection sheet is impacted by the high-temperature and high-pressure substances of the adjacent cells in the lateral direction, the bonding is easy to fail, so that the protection sheet is blown down, and further, the explosion-proof sheet is directly impacted by the high-temperature and high-pressure substances, and the cells are in linkage thermal runaway.
Disclosure of utility model
In view of the above-mentioned drawbacks of the prior art, the present utility model aims to provide an explosion-proof structure of a battery cell, a battery cell cover plate, a battery cell housing and a battery cell, which are used for solving the problems of material waste and the like caused by the need of damaging back glue in the removal process of a protection sheet fixed and adhered in the prior art.
To achieve the above and other related objects, the present utility model provides an explosion-proof structure of a battery cell, comprising:
A base body part provided with an explosion-proof through hole,
The explosion-proof piece is fixedly connected on the base body part and seals the explosion-proof through hole,
A protective sheet connected to the base portion, the protective sheet at least partially covering the explosion-proof sheet in orthographic projection in a thickness direction of the base portion,
The protective sheet comprises a protective sheet body and a connecting structure arranged on the protective sheet body, and the protective sheet body is connected with the base body through the connecting structure.
Optionally, the protection sheet body sets up the base member portion deviates from the one side of explosion-proof piece, connection structure is the couple, the couple pass explosion-proof through-hole and with base member portion deviates from one side block of protection sheet body portion.
Optionally, the hooks are continuously arranged as a whole along the edge of the protective sheet body; or alternatively
The hooks are arranged in a plurality, and the hooks are sequentially arranged along the edge of the protection sheet body;
One side of the base body part, which is away from the protection sheet body, is provided with an avoidance groove which is arranged around the explosion-proof through hole, and at least part of the hook is arranged in the avoidance groove and is arranged at intervals with the explosion-proof sheet.
Optionally, a chamfer for guiding the hook is arranged on the explosion-proof through hole near the edge of the opening of the protection sheet.
Optionally, the connection structure is a threaded structure, a fastener structure, or a snap-fit structure.
Optionally, the base body part comprises a convex rib surrounding the explosion-proof through hole, and the protection sheet body is covered on the convex rib; or the base body part comprises a sinking table surrounding the explosion-proof through hole, and the protection sheet body cover is arranged on the sinking table.
Optionally, the protective sheet is transparent.
Optionally, the protective sheet is a pamer sheet.
The utility model also provides a battery cell cover plate, which comprises a cover plate body, wherein the cover plate body is provided with the explosion-proof structure, the base body part is a part of the cover plate body, the explosion-proof through hole penetrates through the cover plate body, and the protection sheet cover is arranged on the outer side of the cover plate body.
The utility model also provides a battery cell shell, which comprises a shell body, wherein the shell body is provided with the explosion-proof structure, the base body part is a part of the shell body, the explosion-proof through hole penetrates through the shell body, and the protection sheet cover is arranged on the outer side of the shell body.
The utility model also provides a battery cell, which comprises a shell and a cover plate, wherein the shell is provided with an opening, the inside of the shell is provided with a battery cell inner component, the cover plate is covered on the opening and seals the opening,
The cover plate is provided with an explosion-proof structure as claimed in any one of the above, the base body part is a part of the cover plate, and the protective sheet cover is arranged on the outer side of the cover plate; or alternatively
The casing has an explosion-proof structure according to any one of the above, the base portion is a part of the casing, and the protective sheet cover is provided on the outside of the casing.
As described above, the explosion-proof structure, the battery cell cover plate, the battery cell shell and the battery cell of the battery cell have the following beneficial effects: the protection piece covers the explosion proof piece along the at least part of orthographic projection on base member thickness direction, and the protection piece plays the guard action to the explosion proof piece, and the protection piece includes protection piece body and connection structure, and connection structure sets up on the protection piece body, and the protection piece body passes through connection structure and is connected with base member portion, and connection structure is mechanical structure, compares in bonding connection, when being impacted by high temperature high pressure material, and connection structure receives less influence, and the connection between protection piece and the base member portion is more reliable, avoids the protection piece to be blown down by high temperature high pressure material. Meanwhile, the protective sheet is connected with the base body part through the connecting structure, and a film on the back adhesive is not required to be torn off, so that the process steps are simplified, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an explosion-proof structure according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of an explosion-proof structure according to an embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of a protective sheet according to an embodiment of the present utility model;
FIG. 4 is a schematic perspective view of a protective sheet according to an embodiment of the present utility model;
FIG. 5 is a schematic perspective view of a protective sheet according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of an exploded view of a battery cell cover according to an embodiment of the present utility model;
FIG. 7 is a schematic view of a longitudinal cross-sectional structure of the battery cell cover plate in FIG. 6;
FIG. 8 is a schematic cross-sectional view of the cell cover of FIG. 6;
fig. 9 is a schematic diagram of an explosion structure of a battery cell cover plate according to an embodiment of the utility model;
Fig. 10 is a schematic perspective view of a cover body of the battery cell cover in fig. 9;
FIG. 11 is a schematic view of a longitudinal cross-sectional structure of the battery cell cover plate in FIG. 9;
FIG. 12 is a schematic cross-sectional view of the cell cover of FIG. 9;
Fig. 13 is a schematic diagram of a cell structure according to an embodiment of the utility model;
fig. 14 is a schematic diagram of a second embodiment of a cell structure according to the present utility model.
Reference numerals illustrate: 1-cover plate body, 2-explosion-proof through hole, 3-explosion-proof piece, 4-protection piece, 5-base body portion, 6-post, 7-liquid injection hole, 8-avoidance groove, 9-convex rib, 10-sinking table, 11-cover plate, 12-shell, 40-protection piece body, 41-couple.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
Referring to fig. 1 to 12, the present embodiment provides an explosion-proof structure of a battery cell, including a base portion 5, an explosion-proof sheet 3 and a protection sheet 4, wherein the base portion 5 has an explosion-proof through hole 2, the explosion-proof sheet 3 is fixedly connected to the base portion 5 and seals the explosion-proof through hole 2, the protection sheet 4 is connected to the base portion 5, and the protection sheet 4 at least partially covers the explosion-proof sheet 3 along the orthographic projection of the thickness direction of the base portion 5. The protection sheet 4 includes a protection sheet body 40 and a connection structure provided on the protection sheet body 40, and the protection sheet body 40 is detachably connected with the base body 5 through the connection structure.
The protection piece 4 plays the guard action to explosion-proof piece 3, and connection structure is mechanical structure, compares in bonding connection, when being impacted by high temperature high pressure material, and connection structure receives less influence, and the connection between protection piece 4 and the base member 5 is more reliable, avoids protection piece 4 to be blown off by high temperature high pressure material. The protection sheet 4 is connected with the base body part 5 through the connecting structure, and a film on the back adhesive is not required to be torn off, so that the process steps are simplified, and the production efficiency is improved. Meanwhile, when the explosion-proof sheet 3 is inspected, if the protection sheet 4 is opaque, the protection sheet 4 can be detached from the base body part 5, so that the explosion-proof sheet 3 is inspected, after the inspection is finished, the protection sheet 4 can be connected onto the base body part 5 again, no adhesive is needed, and the production cost is saved.
Specifically, the connection structure is a threaded structure, a fastener structure or a buckle structure. When the connecting structure is a threaded structure, the protection sheet can be screwed with the base body through threads, so that the protection sheet and the base body can be detachably connected. The connecting structure can also be a buckle, the buckle is closed, the protection sheet can be connected to the base body part, and the protection sheet can be detached from the base body part. The fastener structure can be a connecting piece such as a clip and a bolt assembly, and the protection sheet can be connected to the base body through the connecting piece such as the clip and the bolt assembly. And the connecting piece is disassembled, so that the protection piece can be disassembled.
As shown in fig. 1, 2 and 3, in the present embodiment, the connection structure is a hook 41, and the protection sheet body 40 is disposed on a side of the base portion 5 facing away from the explosion-proof sheet 3, and the hook 41 passes through the explosion-proof through hole 2 and engages with a side of the base portion 5 facing away from the protection sheet body 40. The hook 41 is simple in structure, easy to process and suitable for industrial application.
In this embodiment, be provided with on the base member portion 5 the side that deviates from protection sheet body 40 and dodge recess 8, dodge recess 8 and set up a week around explosion-proof through-hole 2, couple 41 pass after explosion-proof through-hole 2, at least part is located in dodging recess 8, in this embodiment, explosion-proof sheet 3 sets up on the base member portion 5 the side that deviates from protection sheet body 40, the interval sets up between couple 41 and the explosion-proof sheet 3, couple 41 has the clearance between couple 41 and the explosion-proof sheet 3 after hanging on dodging recess 8 promptly, avoid couple 41 and explosion-proof sheet 3 to interfere.
As shown in fig. 4, in some embodiments, the hooks 41 are continuously provided as one body along the edge of the protection sheet body 40. The integrally provided hook 41 has high structural strength, and the connection is reliable when the protective sheet 4 is connected to the base body 5. In other embodiments, as shown in fig. 5, the hooks 41 may be separately provided in plurality, and the hooks 41 may be sequentially provided along the edge of the protective sheet body 40. The hooks 41 are arranged separately, which is beneficial to reducing the weight of the protective sheet 4, reducing the material consumption of the protective sheet 4 and reducing the production cost. In this embodiment, the hooks 41 are uniformly disposed around the protective sheet body 40, so that the stress of the protective sheet body 40 and the hooks 41 is more uniform, and the stress concentration is reduced.
In this embodiment, the opening edge that explosion-proof through-hole 2 is close to protection piece 4 is provided with the chamfer, and the chamfer can be when couple 41 penetrates explosion-proof through-hole 2 to couple 41 direction, is favorable to couple 41 penetrating explosion-proof through-hole 2 in, the installation of protection piece 4 of being convenient for.
As shown in fig. 1 and 8, in some embodiments, the base portion 5 further includes a bead 9 surrounding the explosion proof through hole 2, the bead 9 being located on a side of the base portion 5 adjacent to the protection sheet 4. The protective sheet body 40 is covered on the convex rib 9. The protruding ribs 9 increase the height of the protection piece 4, are beneficial to increasing the distance between the hooks 41 and the explosion-proof piece 3, and avoid the interference between the hooks 41 and the explosion-proof piece 3. Meanwhile, the convex ribs 9 reduce the area of the contact surface between the base body part 5 and the protective sheet body 40, which is beneficial to reducing the processing difficulty of the base body part 5.
As shown in fig. 2 and 12, in other embodiments, the base portion 5 includes a sinking table 10 surrounding the explosion-proof through hole 2, and the protection sheet body 40 is covered on the sinking table 10. The sinking platform 10 reduces the area of the contact surface between the base body 5 and the protective sheet body 40, which is beneficial to reducing the processing difficulty of the base body 5. Meanwhile, the sinking table 10 reduces the height of the protection sheet 4, which is beneficial to avoiding interference between the protection sheet 4 and external components. At the same time, the height of the protection sheet 4 is reduced, which is beneficial to reducing the windward area of the protection sheet 4 in the lateral direction, namely in the direction parallel to the protection sheet body 40, and reducing the risk that the protection sheet 4 is blown away by the lateral impact airflow.
In this embodiment, the protection sheet 4 is transparent, can see through the protection sheet 4 to the inside condition of explosion-proof through-hole 2, when checking explosion-proof sheet 3, need not to dismantle protection sheet 4 from base member 5, can accomplish the inspection, and is simple and convenient. In this embodiment, the protection sheet 4 is a pamer sheet, and the pamer (Pasmo) material is a high-performance special transparent material, which has the characteristics of high strength, impact resistance, high temperature and high pressure resistance, excellent flame retardant property, and the like, and is suitable for injection molding processing and processing the protection sheet 4.
As shown in fig. 6 to 12, the present embodiment further provides a battery cell cover plate, which includes a cover plate body 1, the cover plate body 1 has the explosion-proof structure as described in any one of the above, the base portion 5 is a part of the cover plate body 1, and the explosion-proof through hole 2 penetrates through the cover plate body 1. The side of the cover plate body 1 facing the inside of the battery cell is the inner side, the side of the cover plate body 1 facing the outside of the battery cell is the outer side, the explosion-proof piece 3 is arranged on the inner side of the cover plate body 1, and the protection piece 4 is covered on the outer side of the cover plate body 1.
In this embodiment, be provided with the heavy platform of installation on the inboard of apron body 1, explosion-proof piece 3 sets up on the heavy platform of installation, and the heavy platform of installation can reduce the area of apron body 1 and explosion-proof piece 3 mating surface, reduces the processing degree of difficulty. Meanwhile, the side wall of the installation sinking table can also limit the explosion-proof sheet 3 in the transverse direction, namely in the direction parallel to the explosion-proof sheet 3, so that the explosion-proof sheet 3 is prevented from randomly moving transversely. The cover plate body 1 is also provided with a pole column 6 and a liquid injection hole 7, wherein the pole column 6 is used for being connected with a pole piece in the battery cell and used for conducting current. The liquid injection hole 7 is used for injecting electrolyte into the battery cell.
As shown in fig. 13 and 14, the present embodiment further provides a battery cell casing 12, which includes a casing body, the casing body has the explosion-proof structure as described in any one of the above, the base body is a part of the casing body, the explosion-proof through hole penetrates through the casing body, and the protection sheet 4 is covered on the outer side of the casing body. The shell body is provided with an opening, and internal components of the battery core, such as a pole piece, a diaphragm and the like, in the battery core can enter the shell body through the opening.
The embodiment also provides a battery cell, which comprises a shell 12 and a cover plate 11, wherein the shell 12 is provided with an opening and is internally provided with a battery cell internal component, and the cover plate 11 is covered on the opening and seals the opening. Specifically, as shown in fig. 13, the cover plate 11 may have the explosion-proof structure as described above, the base portion of the explosion-proof structure is a part of the cover plate 11, and the protection sheet 4 is provided on the outside of the cover plate 11. Alternatively, as shown in fig. 14, the case 12 may have an explosion-proof structure as described above, wherein the base portion of the explosion-proof structure is a part of the case 12, and the protection sheet 4 is provided on the outside of the case 12.
The cover plate 11 is usually provided with a pole column 6 and a liquid injection hole 7, and the battery core is usually internally provided with a pole piece, a diaphragm and other battery core internal components, and the pole piece is connected with the pole column 6. After the internal components of the battery cell are installed into the shell 12, the cover plate 11 is arranged on the opening of the shell 12 in a covering way and is connected with the opening in a sealing way so as to close the opening.
To sum up, the explosion-proof structure, the battery cell cover plate, the battery cell housing and the battery cell of the battery cell provided by the embodiment, the protection sheet body is detachably connected with the base body portion through the connecting structure, the connecting structure is of a mechanical structure, compared with the bonding connection, when being impacted by high-temperature and high-pressure substances, the connecting structure is less affected, the connection between the protection sheet 4 and the base body portion 5 is more reliable, and the protection sheet 4 is prevented from being blown off by the high-temperature and high-pressure substances. The protection sheet 4 is connected with the base body part 5 through the connecting structure, and a film on the back adhesive is not required to be torn off, so that the process steps are simplified, and the production efficiency is improved.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (11)
1. An explosion-proof structure of electric core, characterized by comprising:
A base body part provided with an explosion-proof through hole,
The explosion-proof piece is fixedly connected on the base body part and seals the explosion-proof through hole,
A protective sheet connected to the base portion, the protective sheet at least partially covering the explosion-proof sheet in orthographic projection in a thickness direction of the base portion,
The protective sheet comprises a protective sheet body and a connecting structure arranged on the protective sheet body, and the protective sheet body is connected with the base body through the connecting structure.
2. The explosion-proof structure of a battery cell according to claim 1, wherein the protection sheet body is arranged on one side of the base body part, which is away from the explosion-proof sheet, and the connecting structure is a hook, and the hook penetrates through the explosion-proof through hole and is clamped with one side of the base body part, which is away from the protection sheet body part.
3. The explosion-proof structure of the battery cell according to claim 2, wherein the hooks are continuously arranged as one body along the edge of the protection sheet body; or alternatively
The hooks are arranged in a plurality, and the hooks are sequentially arranged along the edge of the protection sheet body;
One side of the base body part, which is away from the protection sheet body, is provided with an avoidance groove which is arranged around the explosion-proof through hole, and at least part of the hook is arranged in the avoidance groove and is arranged at intervals with the explosion-proof sheet.
4. The explosion-proof structure of the battery cell according to claim 2, wherein the explosion-proof through hole is provided with a chamfer for guiding the hook near the opening edge of the protection sheet.
5. The explosion-proof structure of a battery cell according to claim 1, wherein the connection structure is a screw structure, a fastener structure or a snap structure.
6. The explosion-proof structure of the battery cell according to claim 1, wherein the base body part comprises a convex rib surrounding the explosion-proof through hole, and the protection sheet body is covered on the convex rib; or the base body part comprises a sinking table surrounding the explosion-proof through hole, and the protection sheet body cover is arranged on the sinking table.
7. The explosion-proof structure of the battery cell according to claim 1, wherein the protective sheet is transparent.
8. The explosion-proof structure of a battery cell according to claim 1, wherein the protection sheet is a pamer sheet.
9. The battery cell cover plate is characterized by comprising a cover plate body, wherein the cover plate body is provided with the explosion-proof structure as claimed in any one of claims 1-8, the base body part is a part of the cover plate body, the explosion-proof through hole penetrates through the cover plate body, and the protection sheet cover is arranged on the outer side of the cover plate body.
10. An electrical core housing, comprising a housing body, wherein the housing body has the explosion-proof structure according to any one of claims 1 to 8, the base body is a part of the housing body, the explosion-proof through hole penetrates through the housing body, and the protection sheet cover is arranged on the outer side of the housing body.
11. The battery cell is characterized by comprising a shell and a cover plate, wherein the shell is provided with an opening, a battery cell internal component is arranged in the shell, the cover plate is covered on the opening and seals the opening,
The cover plate has the explosion-proof structure according to any one of claims 1 to 8, the base body part is a part of the cover plate, and the protective sheet cover is arranged on the outer side of the cover plate; or alternatively
The casing has the explosion-proof structure according to any one of claims 1 to 8, the base portion is a part of the casing, and the protective sheet is provided on the outside of the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322678332.2U CN221041443U (en) | 2023-09-28 | 2023-09-28 | Explosion-proof structure of battery cell, battery cell cover plate, battery cell shell and battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322678332.2U CN221041443U (en) | 2023-09-28 | 2023-09-28 | Explosion-proof structure of battery cell, battery cell cover plate, battery cell shell and battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221041443U true CN221041443U (en) | 2024-05-28 |
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ID=91136615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322678332.2U Active CN221041443U (en) | 2023-09-28 | 2023-09-28 | Explosion-proof structure of battery cell, battery cell cover plate, battery cell shell and battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221041443U (en) |
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2023
- 2023-09-28 CN CN202322678332.2U patent/CN221041443U/en active Active
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