CN118712589A - Packaging shell and battery - Google Patents
Packaging shell and battery Download PDFInfo
- Publication number
- CN118712589A CN118712589A CN202410417298.XA CN202410417298A CN118712589A CN 118712589 A CN118712589 A CN 118712589A CN 202410417298 A CN202410417298 A CN 202410417298A CN 118712589 A CN118712589 A CN 118712589A
- Authority
- CN
- China
- Prior art keywords
- flange
- housing
- thickness
- battery
- package
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004880 explosion Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000004927 fusion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000012466 permeate 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
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The application provides a packaging shell and a battery, wherein the packaging shell comprises: a first housing including a top and a first sidewall extending downwardly from the top, the first sidewall having a first flange extending outwardly therefrom, the first sidewall defining an opening; and a second housing including a middle portion and a second flange extending outwardly from the middle portion; the middle part is used for covering the opening, and the material of the first shell and the second shell is alloy. The application aims to provide a packaging shell so as to improve the reliability of cell packaging and the uniformity of cell size.
Description
The application relates to a divisional application with the application number of CN201711165151.2, the application date of 2017, 11, 21 and the name of 'packaging shell and battery'.
Technical Field
The invention relates to a packaging case and a battery.
Background
Most of battery cores used by the conventional battery are in aluminum plastic film flexible package packaging, the aluminum plastic film flexible package packaging has poor dimensional consistency, the tolerance is +/-0.5-1.5 mm, and the problem of large dimensional tolerance of the battery cores can be solved only temporarily from the control process consistency for the flexible package process, but the problem is difficult to realize. Secondly, the head seal area and the side edge folding area of the flexible package battery core occupy excessive volume, the battery core energy density is lower, but the increase of the battery core size generated by the soft package head and the side edge folding cannot be reduced. Finally, the soft package adopts PP hot melt to seal, and steam is easy to permeate, leads to the battery core to lose efficacy, and the soft package can only improve the seal width and prevent steam infiltration, and this can lead to further increase of battery core packaging volume, and then leads to battery core energy density to reduce.
It can be seen that there is a need in the art for improved uniformity of cell size and reliability of cell packaging.
Disclosure of Invention
In view of the problems in the related art, an object of the present invention is to provide a packaging case for improving reliability of a battery cell package and uniformity of a battery cell size.
The present application provides a packaging case for a battery, comprising: a first housing including a top and a first sidewall extending downwardly from the top, the first sidewall having a first flange extending outwardly therefrom, the first sidewall defining an opening; and a second housing including a middle portion for covering the opening and a second flange extending outwardly from the middle portion for contacting the first flange; wherein,
The materials of the first shell and the second shell are alloys; the package case further includes an explosion-proof valve provided at the intermediate portion, the explosion-proof valve being provided at a corner portion of the second housing, and the corner portion of the second housing and the corner portion of the explosion-proof valve having a consistent protruding direction.
According to the present application, the material of the first housing and the second housing is stainless steel.
According to the present application, the thickness of the first housing and the second housing ranges from 125 μm to 200 μm.
According to the application, the explosion-proof valve is an L-shaped groove, the explosion-proof valve is arranged on the outer surface of the middle part, and the depth of the explosion-proof valve is smaller than the thickness of the second shell.
According to the present application, the cross section of the groove in the thickness direction of the intermediate portion is V-shaped, and the distance of the bottom of the groove from the inner surface of the intermediate portion is 15 μm to 35 μm.
According to the application, the corner of the explosion-proof valve is a round chamfer, and the radius R of the round chamfer is 1mm.
According to the application, the packaging shell is provided with the positive pole post, the negative pole connecting piece, the liquid injection port and the nail, the positive pole post is insulated from the packaging shell, the negative pole connecting piece is connected to the packaging shell, the liquid injection port is formed on the packaging shell, and the nail seals the liquid injection port.
According to the application, the intermediate portion and the second flange lie on the same plane, or the second housing comprises a bottom and a second side wall which extends upwardly from the bottom, the second side wall extending outwardly to form the second flange.
The application also provides a battery comprising a battery cell and a packaging shell as described above, wherein the battery cell is accommodated in the packaging shell, and the first flange and the second flange are welded.
According to the application, a molten junction is formed between the first flange and the second flange, the molten junction sealing the opening.
According to the application, the thickness of the first flange and the second flange is a first thickness, and the depth of the fusion joint region is a second thickness, the second thickness is greater than the first thickness and the second thickness is less than twice the first thickness.
According to the application, the width of the first flange and the second flange is 0.3mm-0.7mm.
The beneficial technical effects of the application are as follows:
the packaging shell is made of alloy, so that the packaging shell has high hardness and ductility, the reliability of the battery cell packaging can be improved, a thick shell is not needed, and wide seal edges and folds are not needed, the volume of the battery is reduced, and the volume energy density of the battery is further improved. In addition, the first shell and the second shell are sealed by welding the first flange and the second flange, so that the sealing process of the battery is simple and reliable.
Drawings
Fig. 1 is a schematic perspective view of a package of the present application.
Fig. 2 is a schematic partial cross-sectional view of the package of the present application.
Fig. 3 is a schematic plan view of a second housing of the present application.
Fig. 4 is a schematic cross-sectional view taken along line A-A of fig. 3.
Fig. 5 is a schematic side view of the package of the present application.
Fig. 6 is a schematic cross-sectional view taken along line B-B of fig. 5.
Fig. 7 is an enlarged view of a portion of the fusion-bonded region of fig. 2.
Detailed Description
Embodiments of the present application will now be described in detail with reference to the accompanying drawings, which are exemplary only, and are not intended to limit the scope of the application.
Referring to fig. 1 and 2, in one embodiment, the present application provides a package case for a battery, comprising: the first casing 1, the first casing 1 includes a top 15 and a first sidewall 13, the first sidewall 13 extends downward from the top 15, the first sidewall 13 has a first flange 12 extending outward, and the first sidewall 13 encloses an opening 11; and a second housing 2, the second housing 2 including an intermediate portion 22 and a second flange 21 extending outwardly from the intermediate portion 22; wherein the middle portion 22 is used for covering the opening 11, and the material of the first housing 1 and the second housing 2 is an alloy. The packaging shell of the application is used for sealing the first flange 12 of the first shell 1 and the second flange 21 of the second shell 2, the middle part 22 can cover the opening 11, so that the reliability of the battery cell packaging is improved, the shell-shaped packaging and alloy materials enable the battery cell not to need wider seal edges or folds, the uniformity of the size of the battery cell is improved, and meanwhile, the outside water vapor is not easy to penetrate into the battery cell, so that the reliability is further improved.
Referring to fig. 2, in one embodiment, the material of the first and second housings 1 and 2 is stainless steel. The stainless steel shell can protect the internal battery cell from falling damage and moisture attack. Alternatively, the first housing 1 and the second housing 2 are each constructed as a stainless steel stamping. Because the first shell 1 and the second shell 2 are respectively constructed into stainless steel stamping forming pieces, edge folding is not needed, and therefore the defect that the energy density of the battery cell is low due to the fact that the head seal area and the side edge folding area of the flexible package battery cell in the prior art occupy too much volume is avoided, the volume ratio of packaging materials in the battery cell is reduced, and the energy density of the battery cell is improved. Of course, the materials of the first and second housings may be other alloy materials, such as nickel alloy, chromium alloy, etc., in addition to stainless steel.
In one embodiment of the application, the thickness of the first housing 1 and the second housing 2 ranges from 125 μm to 200 μm. The materials of the first shell 1 and the second shell 2 are alloys, so that the materials have high hardness and ductility, the thickness of 125-200 mu m can meet the packaging requirement of the battery core, the volume of the battery is small, and the volume energy density of the battery is high.
In one embodiment of the application, the width of both the first flange and the second flange is 0.4mm. Of course the width of the first flange and the second flange may also be 0.55mm.
As shown in fig. 2, in one embodiment, the second housing 2 is entirely flat to accommodate a small-sized battery cell. Or in other embodiments the second housing 2 comprises a bottom and a second side wall extending upwardly from the bottom, the second side wall extending outwardly forming a second flange 21.
Referring to fig. 2 and 3, in one embodiment, the intermediate portion 22 is surrounded by the second flange 21 and is connected to the second flange 21. The intermediate portion 22 is opposite to the opening 11 of the first housing 1, and the first flange 12 is in contact with the second flange 21; the package further comprises an explosion-proof valve 7 arranged at the outer surface of the intermediate portion 22. The explosion-proof valve 7 is used for releasing the pressure inside the battery cell by breaking the explosion-proof valve 7 when the pressure inside the battery cell rises to a threshold value, thereby preventing the explosion of the battery cell. The explosion-proof valve 7 is provided in the intermediate portion 22, but not in the second flange 21, in order to prevent the first flange 12 from blocking the explosion-proof valve 7, thereby affecting the normal performance of the explosion-proof function. It should be understood that in other embodiments, the explosion-proof valve 7 may also be provided on the first housing 1, which may also function to prevent explosion of the battery cell.
Referring to fig. 3, in one embodiment, the explosion-proof valve 7 is configured as an L-shaped groove, the explosion-proof valve 7 is disposed at an outer surface of the intermediate portion 22, and the depth of the explosion-proof valve 7 is smaller than the thickness of the second housing 2. When the second housing 2 is constructed as a square flat plate, the corners of the grooves are in agreement with the protruding direction of the corners of the square flat plate, the distance from the grooves to the edge of the second housing 2 is 1.5mm-3mm, the corners of the grooves are rounded corners, and the radius R of the rounded corners is 1mm. The grooves may be formed by a grooving process, such as etching or mechanical engraving. The explosion-proof valve 7 is arranged at the corner of the square flat plate, and the corners of the explosion-proof valve 7 and the square flat plate have consistent protruding directions, so that when the pressure inside the battery cell reaches a threshold value, the explosion-proof valve can be broken from the corner, and the explosion-proof effect can be better achieved.
Referring to fig. 4, in one embodiment, the groove forming the explosion proof valve 7 described above extends from the outer surface 23 of the intermediate portion 22 of the second housing 2 to the inner surface 24 of the intermediate portion 22 without penetrating the intermediate portion 22. The cross section of the groove in the thickness direction of the intermediate portion is V-shaped, and the distance of the bottom of the groove from the inner surface 24 of the intermediate portion is 15 μm to 35 μm. The distance is set so that the battery cell has a proper internal pressure threshold value, and when the internal pressure reaches the threshold value, the shell of the battery cell is broken preferentially from the explosion-proof valve 7, but not from other parts.
Referring to fig. 1, 5 and 6, in one embodiment, a positive electrode post 4, a negative electrode connection piece 5, a liquid injection port 14 and a nail 3 are provided on a package case, the positive electrode post 4 is insulated from the package case, the negative electrode connection piece 5 is connected to the package case, the liquid injection port 14 is formed on the package case, and the nail 3 seals the liquid injection port 14. Specifically, the positive electrode post 4 is riveted to the first side wall 13, the negative electrode connecting piece 5 is welded to the first side wall 13, and the nail 3 is welded to the outer surface of the first side wall 13 so as to cover the liquid inlet 14. The thickness of the nail 3 is the same as that of the first side wall 13 and is T, and the welding depth of the nail and the side wall is d, wherein T is less than d and less than 2T. In other words, the staples 3 and the first sidewall 13 have the fusion zone shown in fig. 7 below and the depth of the fusion zone described above. Through the welding and riveting processes and structures, the reliability of the battery cell packaging and the consistency of the battery cell size can be further improved.
Further, referring to fig. 1, the present application also provides a battery including a battery cell (not shown) and the package case according to the above embodiment, wherein the battery cell is accommodated in the package case, and the first flange 12 and the second flange 21 are connected by welding. The welding may be a fusion welding (penetration welding).
Referring to fig. 7, in one embodiment, a molten junction region is formed between the first flange 12 and the second flange 21, the molten junction region continuously sealing the opening 11. The second flange 21 and the first flange 12 have a molten connection region 6 formed therein in a welded manner, the molten connection region 6 penetrating the first flange 12 and extending into the second flange 21. The first flange 12 and the second flange 21 can be welded firmly together by the fusion bonding area 6, so that the first housing 1 and the second housing 2 are not easy to separate accidentally, and the reliability of the cell package is improved in one aspect. Further, the molten connecting region 6 continuously surrounds the groove 11 along the first flange 12 and the second flange 21, and since the molten connecting region 6 continuously surrounds the groove 11, the inner space of the package case formed by the groove 11 can be well sealed, and the penetration of outside moisture into the inside of the battery cell is prevented, thereby improving the reliability of the battery cell package from another aspect.
With continued reference to FIG. 7, in one embodiment, the first flange and the second flange are equal in thickness and are each T, and the depth of the fused attachment zone is D, with T < D < 2T. In other words, the molten connection region 6 penetrates the first flange 12 but not the second flange 21, and the end of the molten connection region 6 remains in the second flange 21, so that the sealing performance of the joint is better improved, the risk of leakage of electrolyte or infiltration of water vapor is greatly reduced, and the reliability of the cell package is further improved. The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (13)
1. A packaging case for a battery, comprising:
a first housing including a top and a first sidewall extending downwardly from the top, the first sidewall having a first flange extending outwardly therefrom, the first sidewall defining an opening; and
A second housing including an intermediate portion for covering the opening and a second flange for contacting the first flange;
Wherein the material of the first shell and the second shell is an alloy;
The package case further includes an explosion-proof valve provided at a corner of the second case, and the corner of the second case has a consistent protruding direction with the explosion-proof valve.
2. The packaging of claim 1, wherein the explosion proof valve is an L-shaped slot at a distance of 1.5mm-3mm from the edge of the second housing.
3. The packaging of claim 1, wherein the material of the first and second shells is stainless steel.
4. The packaging shell of claim 1, wherein the thickness of the first and second shells ranges from 125 μιη to 200 μιη.
5. The package according to claim 1, wherein the explosion-proof valve is an L-shaped groove provided on an outer surface of the second housing, and a length of the explosion-proof valve in a thickness direction of the second housing is smaller than a thickness of the second housing.
6. The package according to claim 5, wherein the groove has a V-shaped cross section in a thickness direction of the second housing, and a bottom of the groove is spaced from an inner surface of the second housing by a distance of 15 μm-35 μm.
7. The packaging of claim 1, wherein the corners of the explosion proof valve are rounded corners, the radius R of the rounded corners being 1mm.
8. The package according to claim 1, wherein the package is provided with a positive electrode post, a negative electrode connecting piece, a liquid filling port and a nail, the positive electrode post is insulated from the package, the negative electrode connecting piece is connected to the package, the package is provided with a liquid filling hole, and the nail seals the liquid filling port.
9. The packaging of claim 1, wherein the intermediate portion and the second flange lie on the same plane, or the second housing comprises a bottom and a second sidewall extending upwardly from the bottom, the second sidewall extending outwardly forming the second flange.
10. A battery comprising a battery cell and the package according to any one of claims 1 to 9, wherein the battery cell is housed in the package, and the first flange and the second flange are welded.
11. The battery of claim 10, wherein a fused connection region is formed between the first flange and the second flange, the fused connection region sealing the opening.
12. The battery of claim 11, wherein the first flange and the second flange have a first thickness and the molten connection region has a second thickness, the second thickness being greater than the first thickness and the second thickness being less than twice the first thickness.
13. The battery of claim 10, wherein the first flange and the second flange each have a width of 0.3mm-0.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410417298.XA CN118712589A (en) | 2017-11-21 | 2017-11-21 | Packaging shell and battery |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165151.2A CN109817849B (en) | 2017-11-21 | 2017-11-21 | Packaging shell and battery |
| CN202410417298.XA CN118712589A (en) | 2017-11-21 | 2017-11-21 | Packaging shell and battery |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711165151.2A Division CN109817849B (en) | 2017-11-21 | 2017-11-21 | Packaging shell and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118712589A true CN118712589A (en) | 2024-09-27 |
Family
ID=66599670
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410417298.XA Pending CN118712589A (en) | 2017-11-21 | 2017-11-21 | Packaging shell and battery |
| CN201711165151.2A Active CN109817849B (en) | 2017-11-21 | 2017-11-21 | Packaging shell and battery |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711165151.2A Active CN109817849B (en) | 2017-11-21 | 2017-11-21 | Packaging shell and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN118712589A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115347279A (en) * | 2021-05-14 | 2022-11-15 | 中创新航科技股份有限公司 | Battery, battery pack, and battery manufacturing method |
| CN114552086A (en) * | 2021-11-11 | 2022-05-27 | 东莞锂微电子科技有限公司 | Pole welding structure of square steel shell battery and battery |
| CN114447486A (en) * | 2022-01-21 | 2022-05-06 | 宁德新能源科技有限公司 | Battery case, battery and electronic device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040048149A1 (en) * | 2001-10-30 | 2004-03-11 | Oliver Gross | Battery packaging construction |
| CN2599761Y (en) * | 2003-01-02 | 2004-01-14 | 未来科学研究院有限公司 | Square battery |
| KR100631057B1 (en) * | 2003-09-19 | 2006-10-04 | 한국 파워셀 주식회사 | Lithium ion secondary battery |
| JP5094215B2 (en) * | 2007-05-30 | 2012-12-12 | 三洋電機株式会社 | Battery and battery pack |
| CN101877413B (en) * | 2009-04-30 | 2013-10-30 | 比亚迪股份有限公司 | Monomer battery and power battery pack containing same |
| CN101834313B (en) * | 2010-05-12 | 2012-07-04 | 郭治 | Lithium ion battery with gas release and anti-explosion popping safety valve |
| US9905819B2 (en) * | 2013-11-15 | 2018-02-27 | Hitachi Automotive Systems, Ltd. | Prismatic battery |
| CN204760457U (en) * | 2015-07-01 | 2015-11-11 | 山东飞天塑胶制品有限公司 | Plastic battery box body |
| CN205303523U (en) * | 2015-12-29 | 2016-06-08 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN109037509B (en) * | 2016-03-28 | 2020-10-23 | 宁德时代新能源科技股份有限公司 | Secondary battery top cover assembly, secondary battery containing same and assembling method |
| CN205657091U (en) * | 2016-05-16 | 2016-10-19 | 宁德时代新能源科技股份有限公司 | Secondary cell and casing thereof |
| CN206532810U (en) * | 2017-02-25 | 2017-09-29 | 胡尊奥 | A kind of novel battery case packaging structure |
| CN207504023U (en) * | 2017-11-21 | 2018-06-15 | 宁德新能源科技有限公司 | Pack case and battery |
-
2017
- 2017-11-21 CN CN202410417298.XA patent/CN118712589A/en active Pending
- 2017-11-21 CN CN201711165151.2A patent/CN109817849B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109817849B (en) | 2024-04-30 |
| CN109817849A (en) | 2019-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109817849B (en) | Packaging shell and battery | |
| US10109844B2 (en) | Dual weld plug for an electrochemical cell | |
| TW416162B (en) | Prismatic battery housing | |
| KR101296964B1 (en) | Battery pack | |
| WO2022267819A1 (en) | Battery housing, battery, and electronic device | |
| US20230299447A1 (en) | Electrochemical apparatus and electronic device | |
| EP2985807B1 (en) | Rechargeable battery comprising a cap plate with a chamfered portion | |
| KR20140139862A (en) | Battery pack | |
| EP1892779A1 (en) | COVER PLATE ASSEMBLY FOR LITHIUM ION BATTERY, BATTERY CASE AND BATTERY USING the SAME | |
| CN207504023U (en) | Pack case and battery | |
| CN111668401A (en) | Top cover assembly and single battery | |
| CN214848969U (en) | Secondary cell's top cap subassembly and secondary cell | |
| CN212323149U (en) | Top cover assembly and single battery | |
| CN215933696U (en) | Button cell | |
| JP6235333B2 (en) | Lead acid battery | |
| CN110911723B (en) | Secondary battery | |
| CN221080306U (en) | Seal assembly and battery | |
| CN220042177U (en) | Battery cell | |
| CN218242207U (en) | Battery unit | |
| CN219419255U (en) | Battery cell | |
| CN219610587U (en) | Battery cover plate, battery shell and battery | |
| CN219497876U (en) | Button cell and electronic product | |
| JP4284915B2 (en) | Non-aqueous electrolyte battery | |
| WO2024222684A1 (en) | Battery case, battery, and electric device | |
| WO2024055666A1 (en) | Post terminal, top cover structure, battery, battery module and battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |