CN215451572U - Cover plate assembly for battery and battery with same - Google Patents
Cover plate assembly for battery and battery with same Download PDFInfo
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- CN215451572U CN215451572U CN202121197946.3U CN202121197946U CN215451572U CN 215451572 U CN215451572 U CN 215451572U CN 202121197946 U CN202121197946 U CN 202121197946U CN 215451572 U CN215451572 U CN 215451572U
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- explosion
- cover plate
- proof valve
- battery
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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 cover plate component for a battery and the battery with the same, wherein the cover plate component for the battery comprises: the cover plate is a metal piece; the negative electrode is arranged on the cover plate; the explosion-proof valve is arranged on the cover plate; an insulator provided between the explosion-proof valve and the cover plate to separate the explosion-proof valve from the cover plate. According to the cover plate assembly for the battery, the insulation piece is arranged between the explosion-proof valve and the cover plate, so that the explosion-proof valve can be spaced from the cover plate, when the cover plate assembly is applied to the battery, the explosion-proof valve is not prone to low-pressure corrosion, the safety performance of the explosion-proof valve is guaranteed, liquid leakage of the battery can be prevented, and the safety of the battery is improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a cover plate assembly for a battery and the battery with the cover plate assembly.
Background
In the related art, the situation that the voltage of the cover plate of the battery is pulled down by the negative pole column exists in the production and use processes of the battery, so that low-voltage corrosion is easy to occur on the cover plate and the explosion-proof valve, the explosion-proof valve is the weakest area in the cover plate and is easy to damage due to corrosion, liquid leakage of the battery is caused, and the safety risk of the battery is increased.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a cover plate assembly for a battery, in which an explosion-proof valve is not easily corroded by low pressure, and the safety performance of the explosion-proof valve is ensured, so that leakage of the battery can be prevented, and the safety of the battery is improved.
Another object of the present invention is to provide a battery having the above-mentioned cap plate assembly.
A cap plate assembly for a battery according to an embodiment of the first aspect of the present invention includes: the cover plate is a metal piece; the negative electrode is arranged on the cover plate; the explosion-proof valve is arranged on the cover plate; an insulator provided between the explosion-proof valve and the cover plate to separate the explosion-proof valve from the cover plate.
According to the cover plate assembly for the battery provided by the embodiment of the utility model, the insulation piece is arranged between the explosion-proof valve and the cover plate, so that the explosion-proof valve and the cover plate can be spaced, when the cover plate assembly is applied to the battery, the explosion-proof valve is not easy to generate low-pressure corrosion, the safety performance of the explosion-proof valve is ensured, the battery can be prevented from leaking, and the safety of the battery is improved.
According to some embodiments of the present invention, the cover plate is formed with a first through hole, the insulating member is provided at the first through hole, the insulating member is formed with a second through hole, the second through hole communicates with the first through hole, and the explosion-proof valve is provided at the second through hole and closes the second through hole.
According to some embodiments of the present invention, a boss is provided on an inner circumferential surface of the second through hole, and an edge of the explosion proof valve is supported on the boss.
According to some embodiments of the utility model, the explosion-proof valve comprises: the edge of the body part is provided with a groove, and the groove is opposite to the boss; an edge portion connected to an outer peripheral side of the body portion, the edge portion having a thickness greater than a thickness of the body portion, the edge portion being supported on the boss.
According to some embodiments of the present invention, a side surface of the boss remote from the cover plate is lower than a side surface of the insulator remote from the cover plate, and a distance between the side surface of the boss remote from the cover plate and the side surface of the insulator remote from the cover plate is greater than a thickness of the explosion-proof valve.
According to some embodiments of the utility model, a side surface of the insulating member remote from the cover plate is provided with an explosion-proof valve protection sheet having at least one opening formed therethrough.
According to some embodiments of the utility model, the cover plate assembly further comprises: the disc is arranged between the cover plate and the insulating part, and a third through hole is formed in the disc and communicated with the first through hole and the second through hole.
According to some embodiments of the utility model, the disc has a radially outwardly extending skirt connected to the insulator.
According to some embodiments of the utility model, the insulator is an insulating ceramic.
A battery according to an embodiment of the second aspect of the present invention includes the cap plate assembly for a battery according to the above-described embodiment of the first aspect of the present invention.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a cap plate assembly of a battery according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the cover plate assembly shown in FIG. 1;
fig. 3 is an exploded view of a cap plate assembly of a battery according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of the cover plate assembly shown in FIG. 3;
fig. 5 is a schematic view of an insulator of a cap plate assembly of a battery according to an embodiment of the present invention;
fig. 6 is a schematic view of an explosion-proof valve of a cap plate assembly of a battery according to an embodiment of the present invention;
FIG. 7 is a schematic view of a disk of a cover plate assembly of a battery according to an embodiment of the present invention;
fig. 8 is a schematic view of an explosion-proof valve-protecting sheet of a cap plate assembly of a battery according to an embodiment of the present invention.
Reference numerals:
100: a cover plate assembly;
1: a cover plate; 11: a first through hole; 2: a negative electrode; 3: an explosion-proof valve; 31: a body portion;
32: an edge portion; 33: a groove; 4: an insulating member; 41: a second through hole; 42: a boss;
5: an explosion-proof valve protection sheet; 51: an opening; 6: a disc; 61: a skirt edge; 62: a third via.
Detailed Description
A cap plate assembly 100 for a battery according to an embodiment of the first aspect of the present invention will be described with reference to fig. 1 to 8. In the following description of the present application, the application of the cap plate assembly 100 to a battery (not shown) is exemplified.
As shown in fig. 1 to 8, a cap plate assembly 100 for a battery according to an embodiment of the first aspect of the present invention includes a cap plate 1, a negative electrode 2, an explosion-proof valve 3, and an insulating member 4.
Specifically, the cover plate 1 is a metal member, the negative electrode 2 is provided on the cover plate 1, the explosion-proof valve 3 is provided on the cover plate 1, and the insulating member 4 is provided between the explosion-proof valve 3 and the cover plate 1 to separate the explosion-proof valve 3 from the cover plate 1.
For example, in the example of fig. 1 to 4, the cover plate 1 is substantially rectangular, and the negative electrodes 2 and the explosion-proof valves 3 are arranged at intervals along the length direction of the cover plate 1, wherein the negative electrodes 2 are pierced on the cover plate 1. Through setting up insulating part 4 between explosion-proof valve 3 and apron 1, can make explosion-proof valve 3 and apron 1 contactless, therefore, when negative pole 2 draws low the voltage of apron 1, explosion-proof valve 3 still can keep original electric potential, when apron subassembly 100 is applied to the battery, can effectively avoid the ion in the battery liquid to migrate to explosion-proof valve 3 department in a large number, thereby explosion-proof valve 3 is difficult for taking place the low-pressure corrosion, the security performance of explosion-proof valve 3 has been guaranteed, and then can prevent that the battery from taking place the weeping, the security of battery has been improved.
In addition, when the cover plate 1 is not charged, since the cover plate 1 is a metal member, the voltage of the cover plate 1 may be pulled down by the negative electrode 2. Therefore, the insulating part 4 is arranged between the explosion-proof valve 3 and the cover plate 1, so that the explosion-proof valve 3 can be effectively protected from low-pressure corrosion, and the safety performance of the battery can be greatly improved.
According to the cover plate assembly 100 for the battery of the embodiment of the utility model, the insulation member 4 is arranged between the explosion-proof valve 3 and the cover plate 1, so that the explosion-proof valve 3 can be spaced from the cover plate 1, when the cover plate assembly 100 is applied to the battery, the explosion-proof valve 3 is not easy to generate low-pressure corrosion, the safety performance of the explosion-proof valve 3 is ensured, the leakage of the battery can be prevented, and the safety of the battery is improved.
According to some embodiments of the present invention, the cap plate 1 is formed with a first through hole 11, and the insulating member 4 is provided at the first through hole 11. As shown in fig. 3 and 4, a first through hole 11 is formed at one end of the cap plate 1 in the longitudinal direction. The insulating member 4 is formed with a second through hole 41, the second through hole 41 is communicated with the first through hole 11, and the explosion-proof valve 3 is provided at the second through hole 41 and closes the second through hole 41. Wherein the second through hole 41 is opposite to and communicates with the first through hole 11. Therefore, on one hand, the explosion-proof valve 3 can be used as a sealing part to seal the second through hole 41, and the leakage of the battery can be effectively avoided; on the other hand, when the pressure in the battery is greater than the detonation pressure of the explosion-proof valve 3, the explosion-proof valve 3 is opened, and at the moment, the gas in the battery can be released to the outside through the explosion-proof valve 3 through the first through hole 11 and the second through hole 41, so that the phenomenon of battery explosion and fire caused by overlarge pressure in the battery can be effectively avoided.
Further, a boss 42 is provided on the inner peripheral surface of the second through hole 41, and the edge of the explosion-proof valve 3 is supported on the boss 42. Referring to fig. 5 in combination with fig. 3, the boss 42 is provided on the inner peripheral surface of the side of the second through hole 41 adjacent to the cover plate 1, and the boss 42 extends inward in the radial direction of the insulating member 4, effectively increasing the contact area of the explosion-proof valve 3 with the insulating member 4, so that the explosion-proof valve 3 can be stably and reliably attached to the insulating member 4. Alternatively, the explosion-proof valve 3 may be attached to the surface of the boss 42 on the side away from the cover plate 1 by welding, such as brazing. But is not limited thereto.
In some alternative embodiments, the thickness of the insulating member 4 may range from 1.5mm to 7mm (inclusive). When the thickness of the insulating part 4 is less than 1.5mm, the insulating part 4 is easy to crack when the explosion-proof valve 3 and the insulating part 4 are brazed; when the thickness of the insulating member 4 is greater than 7mm, the insulating member 4 has a large thickness, occupies a large space, is high in cost, and may not be easily molded when the insulating member 4 is processed. Therefore, when the thickness of the insulating piece 4 is between 1.5mm and 7mm, the cracking rate of the insulating piece 4 during brazing can be effectively reduced, and the processing of the insulating piece 4 is convenient. Further alternatively, the thickness of the insulating member 4 may be 2 mm.
According to some embodiments of the present invention, the explosion-proof valve 3 includes a body portion 31 and a rim portion 32, a groove 33 is provided at the rim of the body portion 31, and the groove 33 is opposite to the boss 42. For example, in the example of fig. 6, the depth of the groove 33 is smaller than the thickness of the body portion 31, and the detonation pressure of the explosion-proof valve 3 can be adjusted according to the remaining thickness of the body portion 31. Note that the "residual thickness of the body portion 31" refers to the thickness of the body portion 31 minus the depth of the groove 33. When the pressure in the battery is greater than the explosion pressure of the explosion-proof valve 3, the portion of the body portion 31 corresponding to the groove 33 is cut off, and the gas in the battery can burst the body portion 31 and be released to the outside, so that the pressure in the battery is reduced, and the battery is prevented from exploding. Moreover, by disposing the groove 33 opposite to the boss 42, the boss 42 can protect the groove 33, and the boss 42 can block the portion of the liquid in the battery contacting the corresponding groove 33 of the body 31 to a certain extent, so that the liquid in the battery can be prevented from corroding the portion of the body 31 corresponding to the groove 33 and damaging the body 31. Alternatively, the groove 33 may be a score, and the depth of the groove 33 may range from 0.04mm to 0.08mm (inclusive).
The rim 32 is connected to the outer peripheral side of the body 31, the thickness of the rim 32 is larger than that of the body 31, and the rim 32 is supported on the boss 42. So set up, can effectively guarantee explosion-proof valve 3 and connect on insulating part 4 more reliably. In addition, the thickness of the body portion 33 is thinner than that of the rim portion 32, and when the pressure inside the battery is higher than the explosion pressure of the explosion-proof valve 3, the gas inside the battery can rapidly burst the body portion 31, so that the gas can be rapidly released to the outside, and the pressure inside the battery can be rapidly reduced. Alternatively, the thickness of the rim portion 32 may be 0.5mm, and the thickness of the body portion 31 may be 0.2 mm.
In some alternative embodiments, referring to fig. 1-4, the surface of the insulating member 4 on the side away from the cover plate 1 is provided with an explosion-proof valve protection sheet 5. The explosion-proof valve protection sheet 5 is used for protecting the explosion-proof valve 3 in the manufacturing process of the battery, and the explosion-proof valve 3 is prevented from being damaged by other factors. In addition, when the body portion 31 of the explosion-proof valve 3 is burst by gas in the battery due to the pressure in the battery being greater than the detonation pressure, the explosion-proof valve protection sheet 5 can prevent the liquid in the battery from flowing out to some extent, further improving the safety performance of the battery. Wherein the explosion-proof valve protection sheet 5 can be bonded to the insulating member 4 by a structural adhesive at the edge thereof.
The explosion-proof valve-protecting sheet 5 is formed with at least one opening 51 therethrough. For example, referring to fig. 1, 3 and 8, the openings 51 are four, four openings 51 are formed in the explosion-proof valve protective sheet 5 at intervals from each other, and each opening 51 has a substantially cross shape. When the explosion-proof valve 3 is opened, the gas in the battery can be released to the outside through the opening 51, so that the phenomenon of battery explosion and fire caused by overlarge pressure in the battery can be effectively avoided, and the safety of the battery is ensured.
Four openings 51 are shown in fig. 1, 3 and 8 for illustrative purposes, but it is obvious to those skilled in the art after reading the technical solutions of the present application that the solutions can be applied to two, three or more than four openings 51, which also falls within the protection scope of the present invention.
According to some embodiments of the present invention, a side surface of the boss 42 remote from the cover plate 1 is lower than a side surface of the insulator 4 remote from the cover plate 1, and a distance between the side surface of the boss 42 remote from the cover plate 1 and the side surface of the insulator 4 remote from the cover plate 1 is greater than a thickness of the explosion-proof valve 3. As shown in fig. 2 and 5, after installation, the explosion-proof valve 3 is entirely located in the insulating member 4, and the explosion-proof valve protection plate 5 is located on the side of the insulating member 4 away from the cover plate 1, and at this time, a gap exists between the explosion-proof valve 3 and the explosion-proof valve protection plate 5. So set up, can eliminate the influence of explosion-proof valve protection sheet 5 to the detonation pressure of explosion-proof valve 3 for the detonation pressure of explosion-proof valve 3 only is relevant with the remaining thickness of this somatic part 31 of explosion-proof valve 3, can open fast when guaranteeing explosion-proof valve 3 in the battery internal pressure great, makes the gas in the battery can release to external world fast.
Alternatively, the distance between the surface of the boss 42 on the side away from the cap plate 1 and the surface of the insulator 4 on the side away from the cap plate 1 may be 0.6mm to 1.0mm (inclusive).
Further, as shown in fig. 2 to 4, the cover assembly 100 may further include a disc 6, the disc 6 is disposed between the cover 1 and the insulator 4, a third through hole 62 is formed on the disc 6, and the third through hole 62 is communicated with the first through hole 11 and the second through hole 41. Therefore, the disc 6 is arranged between the cover plate 1 and the insulating part 4, so that the connection reliability between the cover plate 1 and the insulating part 4 can be further ensured, and when the explosion-proof valve 3 is opened, gas in the battery can sequentially pass through the first through hole 11, the third through hole 62 and the second through hole 41 and be released to the outside through the explosion-proof valve 3. For example, the cover plate 1 may be a metal member such as an aluminum cover plate, the insulating member 4 may be an insulating ceramic, and the disc 6 may be effectively connected to the aluminum cover plate and the insulating ceramic, thereby ensuring a reliable connection between the cover plate 1 and the insulating member 4. During installation, the explosion-proof valve 3, the insulating part 4 and the disc 6 can be brazed into a whole through a high-temperature furnace, and then the whole is laser welded on the cover plate 1, so that the sealing performance between the insulating part 4 and the cover plate 1 is ensured.
Further, disk 6 has a radially outwardly extending skirt 61, skirt 61 being connected to insulator 4. Referring to fig. 7 in conjunction with fig. 3 and 4, disc 6 is of annular configuration with skirt 61 disposed on the side of disc 6 adjacent insulator 4. With such an arrangement, on one hand, the contact area between the disc 6 and the insulator 4 is effectively increased, so that the insulator 4 can be more reliably connected to the disc 6; on the other hand, the disc 6 can be welded on the insulating member 4 by brazing, and the skirt 61 can play a role in buffering, so that the insulating member 4 is prevented from cracking due to stress during brazing, and the loss of the insulating member 4 in the battery assembling process can be effectively reduced.
Alternatively, the insulator 4 may be an insulating ceramic. Insulating ceramic has higher insulating resistivity and high dielectric strength, from this, insulating part 4 can guarantee effectively that the electric potential of explosion-proof valve 3 does not change when spacing apart explosion-proof valve 3 and apron 1 for explosion-proof valve 3 can remain initial electric potential throughout, thereby can avoid explosion-proof valve 3 to take place the low pressure corrosion, has guaranteed explosion-proof valve 3's security performance. But is not limited thereto.
A battery according to an embodiment of the second aspect of the present invention includes the cap plate assembly 100 for a battery according to the above-described embodiment of the first aspect of the present invention.
According to the battery provided by the embodiment of the utility model, by adopting the cover plate assembly 100, the leakage of the battery can be effectively avoided, and the safety performance of the battery is improved.
Other constructions and operations of the battery according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A cover plate assembly for a battery, comprising:
the cover plate is a metal piece;
the negative electrode is arranged on the cover plate;
the explosion-proof valve is arranged on the cover plate;
an insulator provided between the explosion-proof valve and the cover plate to separate the explosion-proof valve from the cover plate.
2. The cap plate assembly for a battery according to claim 1, wherein a first through hole is formed in the cap plate, the insulating member is provided at the first through hole, a second through hole is formed in the insulating member, the second through hole communicates with the first through hole, and the explosion-proof valve is provided at the second through hole and closes the second through hole.
3. The cap plate assembly for a battery according to claim 2, wherein a boss is provided on an inner circumferential surface of the second through hole, and an edge of the explosion-proof valve is supported on the boss.
4. The cap plate assembly for a battery according to claim 3, wherein the explosion-proof valve comprises:
the edge of the body part is provided with a groove, and the groove is opposite to the boss;
an edge portion connected to an outer peripheral side of the body portion, the edge portion having a thickness greater than a thickness of the body portion, the edge portion being supported on the boss.
5. The cap plate assembly for a battery according to claim 3, wherein a side surface of the boss remote from the cap plate is lower than a side surface of the insulator remote from the cap plate, and a distance between the side surface of the boss remote from the cap plate and the side surface of the insulator remote from the cap plate is greater than a thickness of the explosion-proof valve.
6. The cap plate assembly for a battery according to claim 5, wherein an explosion-proof valve protection sheet is provided on one side surface of the insulating member remote from the cap plate, the explosion-proof valve protection sheet having at least one opening formed therethrough.
7. The cap plate assembly for a battery according to claim 2, further comprising:
the disc is arranged between the cover plate and the insulating part, and a third through hole is formed in the disc and communicated with the first through hole and the second through hole.
8. The cap plate assembly for a battery of claim 7, wherein the disk has a radially outwardly extending skirt connected to the insulator.
9. The cap plate assembly for a battery according to any one of claims 1 to 8, wherein the insulating member is an insulating ceramic.
10. A battery comprising a cap plate assembly for a battery according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121197946.3U CN215451572U (en) | 2021-05-31 | 2021-05-31 | Cover plate assembly for battery and battery with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121197946.3U CN215451572U (en) | 2021-05-31 | 2021-05-31 | Cover plate assembly for battery and battery with same |
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| Publication Number | Publication Date |
|---|---|
| CN215451572U true CN215451572U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121197946.3U Active CN215451572U (en) | 2021-05-31 | 2021-05-31 | Cover plate assembly for battery and battery with same |
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| Country | Link |
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| CN (1) | CN215451572U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115395155A (en) * | 2022-08-18 | 2022-11-25 | 华为数字能源技术有限公司 | Battery pack, energy storage system and electric automobile |
| CN115579591A (en) * | 2022-11-14 | 2023-01-06 | 深圳海润新能源科技有限公司 | Cover plate assembly, battery assembling method, battery pack and electric equipment |
| CN115832548A (en) * | 2022-10-28 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery monomer, battery and power consumption device |
-
2021
- 2021-05-31 CN CN202121197946.3U patent/CN215451572U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115395155A (en) * | 2022-08-18 | 2022-11-25 | 华为数字能源技术有限公司 | Battery pack, energy storage system and electric automobile |
| CN115395155B (en) * | 2022-08-18 | 2024-06-04 | 华为数字能源技术有限公司 | Battery pack, energy storage system and electric automobile |
| CN115832548A (en) * | 2022-10-28 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery monomer, battery and power consumption device |
| CN115832548B (en) * | 2022-10-28 | 2024-01-05 | 宁德时代新能源科技股份有限公司 | Battery cell, battery and electricity utilization device |
| CN115579591A (en) * | 2022-11-14 | 2023-01-06 | 深圳海润新能源科技有限公司 | Cover plate assembly, battery assembling method, battery pack and electric equipment |
| US11901577B1 (en) | 2022-11-14 | 2024-02-13 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Cover plate assembly, battery, and method for assembling battery |
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