CN218896799U - Battery top cap and battery - Google Patents
Battery top cap and battery Download PDFInfo
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- CN218896799U CN218896799U CN202223315078.1U CN202223315078U CN218896799U CN 218896799 U CN218896799 U CN 218896799U CN 202223315078 U CN202223315078 U CN 202223315078U CN 218896799 U CN218896799 U CN 218896799U
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- 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
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Abstract
The utility model discloses a battery top cover and a battery, wherein the battery top cover comprises: the cover plate is conductive and provided with a first through hole; the riveting block is provided with a second through hole, the second through hole is arranged corresponding to the first through hole, a first insulating layer is arranged between the riveting block and the cover plate, and a third through hole is arranged on the first insulating layer; the conductive hot melting assembly is arranged in the third through hole, one end of the hot melting assembly is connected with the riveting block, the other end of the hot melting assembly is connected with the cover plate, and the fusing temperature of the hot melting assembly is lower than 100 ℃; and the positive pole is arranged on the first through hole and the second through hole in a penetrating way, and a second insulating layer is arranged between the positive pole and the bottoms of the first through hole and the cover plate. According to the battery top cover, the rivet joint block and the cover plate are connected through the conductive hot melting assembly, so that an anti-corrosion effect on a battery shell can be achieved, meanwhile, arc discharge and spark inside the battery can be prevented, the reliability of the whole life cycle of the battery can be guaranteed, and the safety performance of the battery is improved.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a battery top cover and a battery.
Background
In recent years, along with the popularization of electric automobiles, power batteries have also been developed in a series. The energy density, capacity, voltage and the like of batteries and battery packs are all improved, and the safety requirements of the market on the level of modules and battery packs are also more and more strict. And particularly, the passing requirement on the thermal diffusion of the battery pack is tightly increased, namely, after the single battery cell is out of control, the adjacent battery cells do not generate fire or explosion. Under the background, the electric core adopts neutral shell design, can promote the insulating protection effect between the electric core, reduces the risk that takes place to draw the arc in the battery package, avoids causing gas combustion, electric core to fire because of drawing the arc, and then makes the whole covering level pass through the thermal propagation test and does not fire, promotes the security performance.
However, a neutral shell carries another risk, since the lower voltage of the shell to the negative electrode of the lithium ion battery may cause electrochemical corrosion of the aluminum shell by reaction with the internal active substances. In order to solve the corrosion problem, the positive electrode riveting block and the optical aluminum plate are in conductive soft connection through the low-temperature hot-melting assembly, so that the battery cell is positively charged in the normal use process of the whole life cycle, and the aluminum shell cannot be corroded; when the outside of electric core is abnormally heated, low temperature hot melt subassembly need not pass through short-circuit current, and low temperature alloy material spring wire wherein can soften or break off, initiatively makes and protects electric core apron and utmost point post insulation to can prevent spark, the emergence of arcing in the battery package, and then prevent that combustible gas from being ignited. The reliability of the whole life cycle of the battery can be ensured, and the safety performance of the battery pack is improved.
The related art mainly solves the problem of corrosion resistance of a neutral shell in the scheme that a battery cladding level shell is positively charged, and the scheme that the battery core level improves the corrosion of the shell is fewer and cannot solve the corrosion risk brought by the single battery core storage process. Secondly, the realization of the external short circuit prevention or arcing prevention function needs to be realized by designing a large-resistance fuse, namely, the current is disconnected through overcurrent protection, the protection type belongs to passive protection after short circuit occurs, and short circuit still can occur.
It is therefore of great importance to develop a new corrosion protection solution for neutral battery housings.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery top cover that can perform an active protection function, and in which a hot-melt module can be disconnected in advance before a severe external short circuit occurs, so that the probability of arcing and spark occurrence is greatly reduced.
The utility model also aims to provide a battery, so as to apply the battery top cover.
According to an embodiment of the utility model, a battery top cover includes: the cover plate is conductive and provided with a first through hole; the riveting block is provided with a second through hole, the second through hole is arranged corresponding to the first through hole, a first insulating layer is arranged between the riveting block and the cover plate, and a third through hole is arranged on the first insulating layer; the conductive hot melting assembly is arranged in the third through hole, one end of the hot melting assembly is connected with the riveting block, the other end of the hot melting assembly is connected with the cover plate, and the fusing temperature of the hot melting assembly is lower than 100 ℃; the positive pole is arranged on the first through hole and the second through hole in a penetrating mode, and a second insulating layer is arranged between the positive pole and the bottoms of the first through hole and the cover plate.
According to the battery top cover provided by the embodiment of the utility model, the riveting block and the cover plate are connected through the conductive hot melting assembly, so that the anti-corrosion effect on the battery shell can be achieved, meanwhile, the arc and spark inside the battery can be prevented, the reliability of the whole life cycle of the battery can be ensured, and the safety performance of the battery is improved.
In some embodiments, the fuse element has a fusing temperature in the range of 68 ℃ to 98 ℃.
In some embodiments, the fuse element has a fusing temperature in the range of 68 ℃ to 80 ℃.
In some embodiments, the hot melt assembly comprises: the first conductive sheet is connected with the riveting block; the second conducting strip is connected with the cover plate; and one end of the thermal fuse is abutted against the first conductive sheet, and the other end is abutted against the second conductive sheet.
In some embodiments, the thermal fuse is spring-like.
In some embodiments, the thermal fuse is a low melting point alloy having a melting point of 68 ℃ to 98 ℃, the low melting point alloy including at least two materials of tin, bismuth, indium, gallium, and excluding lead and cadmium.
In some embodiments, the content percentages of tin, bismuth, indium and gallium in the thermal fuse are: 0 to 17.3 percent of tin, 17.5 to 26 percent of bismuth, 25.2 to 66 percent of indium and 0 to 5 percent of gallium.
In some embodiments, the number of the third through holes is equal to and corresponds to the number of the hot melting assemblies.
In some embodiments, the positive electrode post includes a post body and a bottom plate connected to each other, the post body is disposed on the first through hole and the second through hole in a penetrating manner, and the bottom plate is located on the lower side of the cover plate; the second insulating layer comprises a first part and a second part, the first part is arranged between the first through hole and the pole body, and the second part is arranged between the bottom plate and the cover plate.
The battery according to the embodiment of the utility model comprises the battery top cover.
According to the battery provided by the embodiment of the utility model, the anti-corrosion effect can be achieved on the battery shell, meanwhile, the arc discharge and spark in the battery can be prevented, the reliability of the whole life cycle of the battery can be ensured, and the safety performance of the battery is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of the structure of a battery top cover of the present utility model;
fig. 2 is an enlarged schematic view of the portion II of fig. 1.
Reference numerals:
100. a battery top cover;
10. a cover plate; 10a, a first through hole;
20. riveting blocks; 20a, a second through hole;
30. a hot melt assembly; 301. a first conductive sheet; 302. a second conductive sheet; 303. a thermal fuse;
40. a positive electrode post; 401. a pole body; 402. a bottom plate;
50. a first insulating layer; 50a, a third through hole;
60. a second insulating layer; 601. a first portion; 602. a second portion;
70. and (3) sealing rings.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between 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.
Referring to fig. 1-2, a battery top cover 100 according to an embodiment of the present utility model is described below.
As shown in fig. 1 to 2, a battery top cover 100 according to an embodiment of the present utility model includes: cover plate 10, riveting piece 20, hot melt subassembly 30, positive terminal 40.
The cover plate 10 is conductive, and a first through hole 10a is formed in the cover plate 10. The riveting block 20 is provided with a second through hole 20a, the second through hole 20a is arranged corresponding to the first through hole 10a, a first insulating layer 50 is arranged between the riveting block 20 and the cover plate 10, and a third through hole 50a is arranged on the first insulating layer 50. The hot melting assembly 30 can conduct electricity, the hot melting assembly 30 is arranged in the third through hole 50a, one end of the hot melting assembly 30 is connected with the riveting block 20, the other end of the hot melting assembly 30 is connected with the cover plate 10, and the fusing temperature of the hot melting assembly 30 is less than 100 ℃. The positive electrode post 40 is penetrated through the first through hole 10a and the second through hole 20a, and a second insulating layer 60 is provided between the positive electrode post 40 and the bottoms of the first through hole 10a and the cap plate 10.
The battery top cover 100 may be applied to a neutral battery case, and the cover plate 10 may be made of a conductive metal material, for example, aluminum material the same as that of the battery case. Of course, the cover plate 10 may be made of other conductive metal materials, which are not described in detail herein.
The fuse assembly 30 electrically connects the rivet block 20 and the cover plate 10, and in the normal operating temperature range, the battery case is positively charged during normal use of the full life cycle, protecting the metal case from corrosion. When the battery is abnormally heated, the hot melting assembly 30 can be melted before being subjected to low temperature of 100 ℃ without passing current, namely, the battery is thermally out of control in the early stage, so that the cover plate 10 is insulated from the positive pole post 40, arc discharge and spark occurrence can be prevented in the battery, and the ignition of combustible gas is further prevented.
According to the battery top cover 100, the rivet joint block 20 and the cover plate 10 are connected through the conductive hot melting assembly 30, so that the corrosion resistance of the battery shell can be achieved, meanwhile, arc discharge and spark in the battery can be prevented, the reliability of the whole life cycle of the battery can be guaranteed, and the safety performance of the battery is improved.
In some embodiments, the fuse element 30 has a fusing temperature in the range of 68 ℃ to 98 ℃. For example, the fusing temperature of the fuse assembly 30 may be 68 ℃, 69 ℃, 71 ℃, 73 ℃, 78 ℃, 80 ℃, 81 ℃, 83 ℃, 86 ℃, 88 ℃, 90 ℃, 93 ℃, 95 ℃, 98 ℃, or the like. Of course, the fusing temperature of the fuse assembly 30 is only exemplified herein, and any value within the range of 68 to 98 ℃ is sufficient, and will not be described here again.
In some embodiments, the fuse element 30 has a fusing temperature in the range of 68 ℃ to 80 ℃.
In some embodiments, as shown in FIG. 2, the hot melt assembly 30 includes: the first conductive sheet 301, the second conductive sheet 302 and the thermal fuse 303, wherein the first conductive sheet 301 is connected with the riveting block 20; the second conductive sheet 302 is connected to the cover plate 10; one end of the thermal fuse 303 abuts against the first conductive sheet 301, and the other end abuts against the second conductive sheet 302. When the temperature is lower than 100 ℃, the thermal fuse 303 is fused, so that the cover plate 10 is insulated from the positive pole 40, and the thermal fuse assembly 30 is simple in structure and convenient to assemble and disassemble, and because the thermal fuse 303 is in contact with the first conductive sheet 301 and the second conductive sheet 302, after the thermal fuse 303 is fused, a new thermal fuse 303 can be replaced to reconstruct a new thermal fuse assembly 30, and the cost is reduced.
In some embodiments, thermal fuse 303 is spring-like. The thermal fuse 303 having this shape is relatively easily broken when softened or melted by heat.
In some embodiments, the thermal fuse 303 is a low melting point alloy having a melting point of 68-98 ℃, the low melting point alloy including at least two materials of tin, bismuth, indium, gallium, and excluding lead and cadmium. Since the low melting point alloy used for the thermal fuse 303 does not include lead and cadmium, it is environmentally friendly.
In some embodiments, the content percentages of tin, bismuth, indium, gallium in the thermal fuse 303 are: 0 to 17.3 percent of tin, 17.5 to 26 percent of bismuth, 25.2 to 66 percent of indium and 0 to 5 percent of gallium. That is, when the thermal fuse 303 includes tin, bismuth, indium, gallium metal, the mass percentage of tin may be 0 to 17.3%, the mass percentage of bismuth may be 17.5 to 26%, the mass percentage of indium may be 25.2 to 66%, and the mass percentage of gallium may be 0 to 5%. In some embodiments, at least 1 of the heat-melting assemblies 30 are provided, and the number of the third through holes 50a is equal to and corresponds to the number of the heat-melting assemblies 30 one by one. A better conductive effect can be achieved by increasing the number of fuse elements 30.
In some embodiments, as shown in fig. 1, the positive electrode post 40 includes a post body 401 and a bottom plate 402 connected to each other, the post body 401 is disposed on the first through hole 10a and the second through hole 20a, and the bottom plate 402 is located on the lower side of the cap plate 10. The second insulating layer 60 includes a first portion 601 and a second portion 602, the first portion 601 being disposed between the first through hole 10a and the post body 401, and the second portion 602 being disposed between the bottom plate 402 and the cap plate 10. By providing the first portion 601, the post body 401 and the first through hole 10a can be sufficiently insulated, and the second portion 602 can sufficiently insulate the bottom plate 402 and the cover plate 10, thereby enhancing the insulation effect of the positive post 40 and the cover plate 10.
In some embodiments, as shown in fig. 1, the battery top cover 100 further includes a sealing ring 70, where the sealing ring 70 is sleeved on the circumferential edge of the bottom plate 402 to perform a sealing function.
In some embodiments, the first insulating layer 50 and the second insulating layer 60 are insulating plastics.
Specific embodiments of the present utility model are described below.
Example 1
As shown in fig. 1 and 2, the battery top cover 100 includes: cover plate 10, riveting piece 20, hot melt subassembly 30, positive terminal 40.
The cover plate 10 is an aluminum plate, and a first through hole 10a is formed in the cover plate 10.
The riveting block 20 is provided with a second through hole 20a, the second through hole 20a is arranged corresponding to the first through hole 10a, a first insulating layer 50 is arranged between the riveting block 20 and the cover plate 10, a third through hole 50a is arranged on the first insulating layer 50, and the first insulating layer 50 is made of insulating plastic.
The hot melt assembly 30 is disposed within the third through-hole 50a, and includes: the first conductive sheet 301, the second conductive sheet 302 and the thermal fuse 303, wherein the first conductive sheet 301 is connected with the riveting block 20; the second conductive sheet 302 is connected to the cover plate 10; one end of the thermal fuse 303 abuts against the first conductive sheet 301, and the other end abuts against the second conductive sheet 302.
Wherein, the thermal fuse 303 is made of low-temperature alloy spring wire, the melting point is 68 ℃, and the content percentages of the low-melting-point alloy constituent elements are respectively: tin: 4.4%; bismuth: 29.9%; indium: 63.7%; gallium: 2%.
The positive electrode post 40 is penetrated through the first through hole 10a and the second through hole 20a, and a second insulating layer 60 is provided between the positive electrode post 40 and the bottoms of the first through hole 10a and the cap plate 10. The positive electrode post 40 includes a post body 401 and a bottom plate 402 connected to each other, the post body 401 being penetrated on the first through hole 10a and the second through hole 20a, the bottom plate 402 being located at the lower side of the cap plate 10. The second insulating layer 60 includes a first portion 601 and a second portion 602, the first portion 601 being disposed between the first through hole 10a and the post body 401, and the second portion 602 being disposed between the bottom plate 402 and the cap plate 10.
Example 2
The structure of the battery top cover 100 of embodiment 2 is substantially the same as that of the battery top cover 100 of embodiment 1, and the same parts are not described here again. Example 2 differs from example 1 in that:
the thermal fuse 303 is made of low-temperature alloy spring wire, the melting point is 70 ℃, and the content percentages of the low-melting-point alloy constituent elements are respectively as follows: tin: 6.9%; bismuth: 29.9%; indium: 62.1%; gallium: 1.1%.
Example 3
The structure of the battery top cover 100 of embodiment 3 is substantially the same as that of the battery top cover 100 of embodiment 1, and the same parts are not described here again. Example 2 differs from example 1 in that:
the thermal fuse 303 is made of low-temperature alloy spring wire, the melting point is 72 ℃, and the content percentages of the low-melting-point alloy constituent elements are respectively as follows: tin: 0% of the total weight of the composition; bismuth: 34%; indium: 66%; gallium: 0%.
Example 4
The structure of the battery top cover 100 of embodiment 4 is substantially the same as that of the battery top cover 100 of embodiment 1, and the same parts are not described here again. Example 4 differs from example 1 in that:
the thermal fuse 303 is made of low-temperature alloy spring wire, the melting point is 72 ℃, and the content percentages of the low-melting-point alloy constituent elements are respectively as follows: tin: 17.3%; bismuth: 57.5%; indium: 0% of the total weight of the composition; gallium: 25.2%.
In combination with the above four embodiments, the temperature control switching effect of the thermal fuse assembly 30 was simulated by heating in an incubator, and whether the thermal fuse 303 was opened or not was diagnosed by the insulation withstand voltage test, to obtain the following table.
Therefore, the above four embodiments can be melted before the low temperature of less than 80 ℃, namely, the initial stage of battery thermal runaway inoculation. The utility model can ensure that the battery core is positively charged in the normal use process of the whole life cycle, and the metal shell of the battery can not be corroded; when the battery is abnormally heated or the self-heating temperature is higher than the melting point of the hot melting assembly 30, the hot melting assembly 30 is fused, the insulation assemblies of the positive pole and the negative pole can ensure that the shell is insulated from the pole, the occurrence of arc discharge can be prevented in the battery, and the combustible gas is prevented from being ignited. The reliability of the whole life cycle of the battery can be ensured, and the safety performance of the battery is improved.
The design scheme of the utility model has simple structure and can solve the corrosion risk brought by the single cell storage process; the active protection is that before severe external short circuit occurs, the thermal fuse 303 is heated to be disconnected in advance, so that the probability of arc discharge and spark occurrence is greatly reduced. The electric core structure is easy to realize on the basis of the existing electric core structure, the optional range of the placement position of the hot melting assembly 30 is wide, the low-temperature alloy is environment-friendly, the processing is easy, and the consistency of the fusing effect is good.
A battery according to an embodiment of the present utility model includes the battery top cover 100 described above. The battery may be a lithium ion battery cell, and may refer to a battery pack including a plurality of battery cells.
According to the battery provided by the embodiment of the utility model, the anti-corrosion effect can be achieved on the battery shell, meanwhile, the arc discharge and spark in the battery can be prevented, the reliability of the whole life cycle of the battery can be ensured, and the safety performance of the battery is improved.
Other constructions and operation of the battery top cover and battery according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present specification, reference to the terms "some embodiments," "optionally," "further," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery top cover, comprising:
a cover plate (10) which can conduct electricity, wherein a first through hole (10 a) is arranged on the cover plate (10);
the riveting block (20), a second through hole (20 a) is formed in the riveting block (20), the second through hole (20 a) is arranged corresponding to the first through hole (10 a), a first insulating layer (50) is arranged between the riveting block (20) and the cover plate (10), and a third through hole (50 a) is formed in the first insulating layer (50);
the conductive hot melting assembly (30), the hot melting assembly (30) is arranged in the third through hole (50 a), one end of the hot melting assembly (30) is connected with the riveting block (20), the other end of the hot melting assembly is connected with the cover plate (10), and the fusing temperature of the hot melting assembly (30) is less than 100 ℃;
the positive pole (40), positive pole (40) wears to establish first through-hole (10 a) with on second through-hole (20 a), positive pole (40) with be equipped with second insulating layer (60) between the bottom of first through-hole (10 a) with apron (10).
2. The battery top cover according to claim 1, wherein the fusing temperature of the hot-melt assembly (30) ranges from 68 ℃ to 98 ℃.
3. The battery top cover according to claim 2, wherein the fusing temperature of the hot-melt assembly (30) ranges from 68 ℃ to 80 ℃.
4. The battery top cover according to claim 1, wherein the hot melt assembly (30) comprises:
a first conductive sheet (301), the first conductive sheet (301) being connected to the rivet block (20);
-a second conductive sheet (302), said second conductive sheet (302) being connected to said cover plate (10);
and a thermal fuse (303), wherein one end of the thermal fuse (303) is abutted against the first conductive sheet (301), and the other end is abutted against the second conductive sheet (302).
5. The battery top cover according to claim 4, wherein the thermal fuse (303) is spring-like.
6. The battery top cover according to claim 4, wherein the thermal fuse (303) is a low melting point alloy having a melting point of 68 ℃ to 98 ℃, the low melting point alloy including at least two materials of tin, bismuth, indium, gallium, and excluding lead and cadmium.
7. The battery top cover according to claim 6, wherein the content percentage of tin, bismuth, indium, gallium in the thermal fuse (303) is: 0 to 17.3 percent of tin, 17.5 to 26 percent of bismuth, 25.2 to 66 percent of indium and 0 to 5 percent of gallium.
8. The battery top cover according to claim 1, wherein the heat-fusible members (30) are provided with at least one, and the number of the third through holes (50 a) is equal to and corresponds to the number of the heat-fusible members (30) one by one.
9. The battery top cover according to claim 1, wherein the positive electrode post (40) includes a post body (401) and a bottom plate (402) connected to each other, the post body (401) being provided on the first through hole (10 a) and the second through hole (20 a) in a penetrating manner, the bottom plate (402) being located on the lower side of the cap plate (10); the second insulating layer (60) comprises a first portion (601) and a second portion (602), the first portion (601) is arranged between the first through hole (10 a) and the pole body (401), and the second portion (602) is arranged between the bottom plate (402) and the cover plate (10).
10. A battery comprising a battery top cover (100) according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223315078.1U CN218896799U (en) | 2022-12-09 | 2022-12-09 | Battery top cap and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223315078.1U CN218896799U (en) | 2022-12-09 | 2022-12-09 | Battery top cap and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218896799U true CN218896799U (en) | 2023-04-21 |
Family
ID=85998534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223315078.1U Active CN218896799U (en) | 2022-12-09 | 2022-12-09 | Battery top cap and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218896799U (en) |
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2022
- 2022-12-09 CN CN202223315078.1U patent/CN218896799U/en active Active
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