CN220138596U - Battery top cover and power battery - Google Patents
Battery top cover and power battery Download PDFInfo
- Publication number
- CN220138596U CN220138596U CN202321673135.5U CN202321673135U CN220138596U CN 220138596 U CN220138596 U CN 220138596U CN 202321673135 U CN202321673135 U CN 202321673135U CN 220138596 U CN220138596 U CN 220138596U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof valve
- top cover
- pressure relief
- relief hole
- 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.)
- Active
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 238000005728 strengthening Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 description 17
- 238000004880 explosion Methods 0.000 description 11
- 238000005422 blasting Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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 belongs to the technical field of batteries, and discloses a battery top cover and a power battery, wherein the battery top cover comprises a top cover plate and an explosion-proof valve, a pressure relief hole is formed in the top cover plate in a penetrating manner, and a bump is arranged at one end of the pressure relief hole; the explosion-proof valve is embedded in the pressure relief hole so as to block the pressure relief hole, one side of the explosion-proof valve facing the pressure relief hole is provided with a notch and a groove for the convex block to be clamped in, the position, corresponding to the groove, of one side of the explosion-proof valve, which is opposite to the pressure relief hole, is provided with a reinforcing rib, and the surface of one side of the explosion-proof valve, which is opposite to the pressure relief hole, is flush with the surface of the top cover sheet. Above-mentioned battery top cap passes through the recess on the explosion-proof valve and mutually supporting of lug on the top cap piece, can prevent that the explosion-proof valve from adorning conversely, and the strengthening rib can avoid the structural strength of explosion-proof valve to reduce, and contain the normal exercise of explosion-proof function of this battery top cap, and the security performance is high.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery top cover and a power battery.
Background
The power battery is a battery for providing a power source for equipment, and is a battery for providing power for electric automobiles, electric trains, electric bicycles, golf carts and the like. In order to reduce the probability of explosion of the power battery, the top of the battery is usually provided with an explosion-proof valve, and when the internal pressure of the battery exceeds a specified value, the explosion-proof valve body breaks to release the internal pressure of the power battery, thereby reducing the probability of explosion of the battery. In general, in order to reduce the structural strength of the explosion-proof valve body such that the explosion-proof valve body breaks when the internal pressure of the battery exceeds a prescribed value, a score is provided on the side of the explosion-proof valve body facing the outside of the power battery.
However, when the explosion-proof valve is assembled to the top of the battery, the situation of reverse assembly is easy to occur, the surface provided with the notch faces the inner assembly of the battery, the pressure release time of the explosion-proof valve is delayed, the explosion-proof effect cannot be achieved in time, and the probability of explosion of the battery is further improved.
Disclosure of Invention
The utility model aims to provide a battery top cover, which can reduce the reverse installation probability of an explosion-proof valve in the assembly process, ensure the timely pressure relief of the explosion-proof valve and quickly realize the explosion-proof effect.
To achieve the purpose, the utility model adopts the following technical scheme:
the battery top cover comprises a top cover plate and an explosion-proof valve, wherein a pressure relief hole is formed in the top cover plate in a penetrating manner, and a bump is arranged on one side inside the pressure relief hole; the explosion-proof valve is embedded in the pressure relief hole so as to seal the pressure relief hole, one side of the explosion-proof valve facing the pressure relief hole is provided with a notch and a groove for the convex block to be clamped in, one side of the explosion-proof valve facing away from the pressure relief hole corresponds to the position of the groove, and the surface of one side of the explosion-proof valve facing away from the pressure relief hole is flush with the surface of the top cover sheet.
Preferably, the pressure relief hole is a step hole and comprises a large-diameter section, a small-diameter section and a step surface, and the bump is arranged on the step surface.
Preferably, the sum of the heights of the reinforcing ribs and the protruding blocks is larger than the hole depth of the large-diameter section of the step hole.
Preferably, the depth of the groove is 0.03mm-0.1mm greater than the height of the bump, and the width of the groove is 0.03mm-0.1mm greater than the width of the bump.
Preferably, the pressure relief hole is a straight hole, and the groove is communicated with the circumferential surface of the explosion-proof valve.
Preferably, the distance between the side of the bump facing away from the explosion-proof valve and the orifice of the pressure relief hole on the side close to the explosion-proof valve is L, and the thickness of the explosion-proof valve is H, where l=h.
Preferably, the explosion-proof valve comprises a welding part and a blasting part, wherein the welding part is arranged around the blasting part, the grooves and the reinforcing ribs are respectively arranged on two side surfaces of the welding part, the nicks are arranged on the blasting part, and the thickness of the blasting part is smaller than that of the welding part.
Preferably, the pressure relief hole and the explosion-proof valve are both formed in an oblong shape, and the two grooves are symmetrically formed in the explosion-proof valve and extend along the length direction of the explosion-proof valve.
Preferably, an annular boss coaxial with the pressure relief hole is further arranged on one side of the top cover sheet, which is opposite to the reinforcing ribs.
The utility model further aims at providing a power battery which is characterized by comprising the battery top cover and an electric core, wherein one side of the top cover sheet, provided with the explosion-proof valve, faces the electric core.
The utility model has the beneficial effects that: in the battery top cover structure, the groove is arranged on one side of the explosion-proof valve, which is provided with the notch, the reinforcing rib is arranged on one side of the explosion-proof valve, which is opposite to the groove, corresponding to the groove position, the bump is arranged in the pressure relief hole of the top cover plate, and the explosion-proof valve can be embedded into the pressure relief hole to complete assembly only when the side of the explosion-proof valve, which is provided with the notch, faces the pressure relief hole; when one side of the explosion-proof valve provided with the nick is back to the pressure relief hole, the explosion-proof valve cannot be embedded into the pressure relief hole, and the rejection of the battery top cover caused by reverse installation of the explosion-proof valve is avoided. Meanwhile, the reinforcing ribs can also solve the problem of the structural strength reduction of the explosion-proof valve caused by the arrangement of the grooves, and the normal pressure relief and explosion-proof functions of the explosion-proof valve are ensured; the power battery provided by the utility model adopts the battery top cover, so that the influence of explosion-proof valve installation reaction on the explosion-proof effect of the explosion-proof valve can be avoided, and the safety performance of the battery is ensured.
Drawings
Fig. 1 is a top view of a battery top cover in a first embodiment of the utility model;
fig. 2 is a side view of a battery top cover in a first embodiment of the utility model;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is an enlarged schematic view of the structure at M in FIG. 3;
fig. 5 is a bottom view of the battery top cover in the first embodiment of the utility model;
fig. 6 is a schematic perspective view of a top sheet according to the first embodiment of the present utility model;
FIG. 7 is a top plan view of the top sheet in the first embodiment of the present utility model;
FIG. 8 is a side view of the coversheet in a first embodiment of the utility model;
FIG. 9 is a cross-sectional view taken along the direction B-B in FIG. 8;
fig. 10 is an enlarged schematic view of the structure at N in fig. 9;
FIG. 11 is a bottom view of the top sheet in the first embodiment of the present utility model;
fig. 12 is a schematic perspective view of an explosion-proof valve in the first embodiment of the present utility model;
fig. 13 is a top view of an explosion proof valve in a first embodiment of the present utility model;
fig. 14 is a side view of an explosion proof valve in a first embodiment of the present utility model;
FIG. 15 is a cross-sectional view taken along the direction C-C of FIG. 14;
fig. 16 is an enlarged schematic view of the structure at P in fig. 15;
fig. 17 is a bottom view of the explosion proof valve in the first embodiment of the present utility model;
fig. 18 is a sectional view of a battery top cover in a second embodiment of the utility model;
fig. 19 is an enlarged schematic view of the structure at Q in fig. 18.
In the figure: 1. a top cover sheet; 11. a pressure relief hole; 111. a large diameter section; 112. a small diameter section; 113. a step surface; 12. a bump; 13. an annular boss; 14. a first perforation; 15. a second perforation; 16. a liquid injection hole;
2. an explosion-proof valve; 21. scoring; 22. a groove; 23. reinforcing ribs; 24. a welding part; 25. and a blasting part.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" 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 through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Fig. 1 to 17 show a battery top cover in a first embodiment of the present utility model, the battery top cover includes a top cover sheet 1 and an explosion-proof valve 2, the shape of the top cover sheet 1 may be specifically configured as a circle, a rectangle, etc., a pressure relief hole 11, a first perforation 14 and a second perforation 15 are provided on the top cover sheet 1, where the first perforation 14 and the second perforation 15 are used for passing through a positive pole and a negative pole respectively, the first perforation 14 and the second perforation 15 are located at two sides of the pressure relief hole 11, the pressure relief hole 11 is used for discharging the pressure in the battery to the outside, so as to avoid explosion of the battery, the pressure relief hole 11 may be configured as one of a circle, a rectangle, an oblong, a triangle, or a polygon, in this embodiment, the pressure relief hole 11 is configured as an oblong step hole, including a large diameter section 111, a small diameter section 112, and a step surface 113, where the circumferential profile of the large diameter section 111 is the same as the circumferential profile of the explosion-proof valve 2, and the hole depth of the large diameter section 111 is consistent with the thickness of the explosion-proof valve 2, the explosion-proof valve 2 can be embedded into the large diameter section 111, and the pressure relief hole 11 can be configured as a notch 21 or a diamond shape, and the pressure relief hole 21 is configured to be configured to face the pressure relief hole 21, or the other side of the explosion-proof valve is not specifically configured to be in the shape or the shape of the explosion-proof valve 2. In order to avoid the reverse installation of the explosion-proof valve 2, the step surface 113 is provided with a bump 12, one side of the explosion-proof valve 2 provided with a notch 21 is provided with a groove 22, the bump 12 can be embedded into the groove 22, the whole explosion-proof valve 2 is embedded into the pressure relief hole 11, when the bump 12 is abutted with the bottom of the groove 22, one side surface of the explosion-proof valve 2, which is away from the pressure relief hole 11, is flush with the surface of the top cover plate 1, and meanwhile, one side of the explosion-proof valve 2, which is away from the pressure relief hole 11, is provided with a reinforcing rib 23 corresponding to the position of the groove 22.
It can be understood that, only when the side that sets up recess 22 on explosion-proof valve 2 is towards lug 12, explosion-proof valve 2 can imbed in relief hole 11, make things convenient for going on smoothly of follow-up welding operation, and when the one side that explosion-proof valve 2 set up recess 22 was facing away from lug 12, the existence of lug 12 and strengthening rib 23 has prevented explosion-proof valve 2 embedding relief hole 11, explosion-proof valve 2 protrusion is in top cap 1, welding operation is difficult for going on, can in time correct assembly error, avoid being difficult to play the explosion-proof effect of pressure release because of explosion-proof valve 2 dress is contrary. The reinforcing ribs 23 not only play a role in preventing reverse installation, but also can improve the structural strength reduction of the explosion-proof valve 2 caused by the arrangement of the grooves 22 and reduce the deformation of the explosion-proof valve 2.
The explosion-proof valve 2 comprises a welding part 24 and a blasting part 25, wherein the welding part 24 is arranged around the blasting part 25 and used for welding with the top cover plate 1, the grooves 22 and the reinforcing ribs 23 are respectively arranged on two side surfaces of the welding part 24, and the nicks 21 are arranged on the same side of the blasting part 25 as the grooves 22. The thickness of the explosion part 25 is smaller than that of the welding part 24, the welding part 24 is thick, so that the firmness of welding with the top cover sheet 1 can be guaranteed, the deformation of the explosion-proof valve 2 is restrained, the explosion-proof valve 2 is broken by the thin explosion part 25, and the explosion-proof valve 2 is ensured to be broken in time when the pressure in the battery reaches the preset pressure. It will be appreciated that the thicknesses in the above description with respect to the explosion-proof valve 2 all refer to the thickness of the weld 24.
In order to completely separate the explosion-proof valve 2 from the cover sheet 1 when the valve is reversely installed, the sum of the height of the reinforcing rib 23 and the height of the projection 12 is larger than the hole depth of the large diameter section 111, and the height of the projection 12 is limited by the groove depth of the groove 22, that is, the sum of the groove depth of the groove 22 and the height of the reinforcing rib 23 is larger than the thickness of the welded portion 24 of the explosion-proof valve 2. In this embodiment, the grooves 22 and the reinforcing ribs 23 are formed by a stamping process, the cross section of the reinforcing ribs 23 is arc-shaped, and at this time, the depth of the grooves 22 and the height of the reinforcing ribs 23 are larger than the thickness of the welding portion 24 in the explosion-proof valve 2, so that the explosion-proof valve 2 can be completely separated from the pressure relief hole 11 when the grooves 22 back to the bumps 12, and at this time, even if the welding operation is performed, the explosion-proof valve 2 and the top cover sheet 1 are not contacted, the explosion-proof valve 2 and the top cover sheet 1 are not welded together, so that the explosion-proof valve 2 and the top cover sheet 1 can be reassembled, waste of the explosion-proof valve 2 and the top cover sheet 1 is not caused, and the production cost is reduced.
Illustratively, the thickness of the welded portion 24 is 0.5mm, the thickness of the blasted portion 25 is 0.2mm, and at this time, the depth of the groove 22 and the height of the rib 23 are 0.35mm.
The recess 22 can set up one or more on explosion-proof valve 2, in this embodiment, based on the setting of pressure release hole 11 oblong, explosion-proof valve 2 also sets up to oblong, and recess 22 is provided with two and recess 22 along the length direction of explosion-proof valve 2 on explosion-proof valve 2 symmetry, as for the length of recess 22, can set up it to be consistent with the length of the long side of explosion-proof valve 2, then the length of strengthening rib 23 also is consistent with the length of the long side of explosion-proof valve 2, can further reduce the deformation of explosion-proof valve 2.
The depth of the grooves 22 is 0.03mm-0.1mm greater than the height of the bumps 12, e.g., the depth of the grooves 22 is 0.03mm greater than the height of the bumps 12; the width of the groove is 0.03mm-0.1mm greater than the width of the bump 12, for example, the width of the groove 22 is 0.03mm greater than the width of the bump 12 to facilitate insertion of the bump 12 into the groove 22.
The top cover sheet 1 is provided with a liquid injection hole 16 for injecting electrolyte into the battery, in order to prevent the electrolyte from entering the pressure release hole 11, as shown in fig. 4, one side of the top cover sheet 1, which is opposite to the reinforcing rib 23, is also provided with an annular boss 13 coaxial with the pressure release hole 11, and the structural strength of the top cover sheet 1 can be enhanced by the arrangement of the annular boss 13.
Fig. 18 to 19 show a battery top cover according to a second embodiment of the present utility model, which is different from the first embodiment in that the pressure release hole 11 in the battery top cover is a straight hole, the bump 12 is disposed on the wall of the pressure release hole 11, the groove 22 is communicated with the circumferential surface of the explosion-proof valve 2, the distance between the side of the bump 12 facing away from the explosion-proof valve 2 and the opening of the pressure release hole 11 on the side where the explosion-proof valve 2 is disposed is L, and the thickness of the explosion-proof valve 2 is H, where l=h. It is emphasized that in this embodiment the ribs 23 are spaced a distance from the edge of the explosion proof valve 2 to provide a space to avoid welding of the explosion proof valve 2 to the cover sheet 1.
In a third embodiment of the present utility model, a power battery is also disclosed, which includes the battery top cover, a positive electrode post inserted in the first through hole 14, a negative electrode post inserted in the second through hole 15, and an electric core electrically connected to the first electrode post and the second electrode post. When the battery top cover is installed, one side of the top cover plate 1 provided with the explosion-proof valve 2 faces the battery core.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. Battery top cap, its characterized in that includes:
the anti-fake device comprises a top cover sheet (1), wherein a pressure relief hole (11) is formed in the top cover sheet (1) in a penetrating mode, and a bump (12) is arranged on one side inside the pressure relief hole (11);
explosion-proof valve (2), explosion-proof valve (2) inlay in pressure release hole (11) in order to shutoff pressure release hole (11), explosion-proof valve (2) towards one side of pressure release hole (11) is provided with nick (21) and supplies recess (22) that lug (12) card was gone into, explosion-proof valve (2) are dorsad one side of pressure release hole (11) corresponds the position of recess (22) is provided with strengthening rib (23), explosion-proof valve (2) are dorsad one side surface of pressure release hole (11) with top cap piece (1) surface parallel and level.
2. The battery top cover according to claim 1, wherein the pressure relief hole (11) is a stepped hole, and comprises a large-diameter section (111), a small-diameter section (112) and a stepped surface (113), and the bump (12) is disposed on the stepped surface (113).
3. The battery top cover according to claim 2, characterized in that the sum of the heights of the reinforcing ribs (23) and the projections (12) is greater than the hole depth of the large diameter section (111).
4. The battery top cover according to claim 1, wherein the depth of the groove (22) is 0.03mm-0.1mm greater than the bump height, and the width of the groove (22) is 0.03mm-0.1mm greater than the bump (12) width.
5. The battery top cover according to claim 1, characterized in that the pressure relief hole (11) is a straight hole, and the groove (22) communicates with the circumferential surface of the explosion-proof valve (2).
6. The battery top cover according to claim 5, characterized in that the distance between the side of the projection (12) facing away from the explosion-proof valve (2) and the opening of the pressure relief hole (11) on the side close to the explosion-proof valve (2) is L, and the thickness of the explosion-proof valve is H, l=h.
7. The battery top cover according to any one of claims 1 to 6, wherein the explosion-proof valve (2) comprises a welded portion (24) and a burst portion (25), the welded portion (24) is disposed around the burst portion (25), the grooves (22) and the reinforcing ribs (23) are respectively disposed on both side surfaces of the welded portion (24), the scores (21) are disposed on the burst portion (25), and the thickness of the burst portion (25) is smaller than that of the welded portion (24).
8. The battery top cover according to any one of claims 1-6, characterized in that the pressure relief hole (11) and the explosion-proof valve (2) are each provided in an oblong shape, the grooves (22) are symmetrically provided on the explosion-proof valve (2) in two, and the two grooves (22) extend in the length direction of the explosion-proof valve (2).
9. The battery top cover according to any one of claims 1-6, characterized in that the side of the top cover sheet (1) facing away from the reinforcing ribs (23) is further provided with an annular boss (13), the annular boss (13) being coaxial with the pressure relief hole (11).
10. Power cell, characterized in that it comprises a battery top cover and an electric core according to any of claims 1-9, and an explosion-proof valve (2) is arranged on the side of the top cover (1) facing the electric core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321673135.5U CN220138596U (en) | 2023-06-29 | 2023-06-29 | Battery top cover and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321673135.5U CN220138596U (en) | 2023-06-29 | 2023-06-29 | Battery top cover and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220138596U true CN220138596U (en) | 2023-12-05 |
Family
ID=88960343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321673135.5U Active CN220138596U (en) | 2023-06-29 | 2023-06-29 | Battery top cover and power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220138596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117691297A (en) * | 2024-02-04 | 2024-03-12 | 蜂巢能源科技股份有限公司 | Explosion-proof valve and battery |
-
2023
- 2023-06-29 CN CN202321673135.5U patent/CN220138596U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117691297A (en) * | 2024-02-04 | 2024-03-12 | 蜂巢能源科技股份有限公司 | Explosion-proof valve and battery |
| CN117691297B (en) * | 2024-02-04 | 2024-04-19 | 蜂巢能源科技股份有限公司 | Explosion-proof valve of battery and battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220138596U (en) | Battery top cover and power battery | |
| JP4493623B2 (en) | Secondary battery | |
| JP5193951B2 (en) | Lithium secondary battery | |
| CN101461076B (en) | Battery can having vent and asymmetric welded cover | |
| CN205609636U (en) | Explosion -proof piece and secondary cell | |
| CN201781028U (en) | Secondary battery | |
| CN116557596B (en) | Explosion-proof valve, end cover assembly, battery and energy storage device | |
| CN116454525A (en) | Battery cover plate, battery shell and battery | |
| CN219892367U (en) | Square shell battery cover plate structure, battery and battery module | |
| CN212934728U (en) | Battery top cap subassembly and have its power battery | |
| CN214848969U (en) | Secondary cell's top cap subassembly and secondary cell | |
| KR20220119635A (en) | Power battery top cover and power battery | |
| CN209981340U (en) | Explosion-proof valve and secondary battery top cover with same | |
| CN217983503U (en) | Top cover assembly and power battery | |
| WO2022247177A1 (en) | Battery casing and lithium battery | |
| CN114221096A (en) | Battery top cap subassembly | |
| CN217114680U (en) | Explosion-proof structure and power battery | |
| CN219959310U (en) | Explosion-proof piece and battery | |
| CN2805102Y (en) | Suare shaped lithium ion cell | |
| CN217788570U (en) | Sealing member, battery top cap and power battery | |
| CN220934361U (en) | Cylindrical battery and battery device | |
| CN218101474U (en) | Explosion-proof top cap and square battery | |
| CN220106695U (en) | Button cell with tang structure | |
| CN219739112U (en) | End cap assembly, battery and energy storage device | |
| CN219873991U (en) | Power battery and battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |