CN110233214A - Battery cover board assembly and battery - Google Patents
Battery cover board assembly and battery Download PDFInfo
- Publication number
- CN110233214A CN110233214A CN201910640690.XA CN201910640690A CN110233214A CN 110233214 A CN110233214 A CN 110233214A CN 201910640690 A CN201910640690 A CN 201910640690A CN 110233214 A CN110233214 A CN 110233214A
- Authority
- CN
- China
- Prior art keywords
- hole
- cover board
- battery
- slot
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003792 electrolyte Substances 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000013528 metallic particle Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to a kind of battery cover board assembly and batteries.Wherein, battery cover board assembly includes: cover board, for connecting battery body；The cover board is equipped with through-hole, and the through-hole is used for the hole being connected on the battery body, to inject electrolyte into the battery body, and for the gas in the battery body to be discharged；And cover plate, it is movably set to the cover board, the cover plate includes the first station and second station, first station, the cover plate avoids the through-hole, electrolyte is injected into the battery body will pass through the through-hole, or the gas in the battery body is discharged；The second station, the cover plate cover the through-hole.Operation of the present invention is convenient, simplifies sealing process, while greatling save manpower and time, while avoiding the contaminated problem of battery core of battery caused by sealing-plug switching in the related technology.
Description
Technical field
The present invention relates to field of batteries more particularly to a kind of battery cover board assemblies and battery.
Background technique
The liquid injection hole of general cover plate of power lithium is all that a small through hole is directly processed on cover plate main body, works as battery
Cover board and battery case assemble after by the small through hole on cover board toward electrolyte is injected inside battery, with one after fluid injection
Sealing-plug clogs liquid injection hole, to subsequent forming and capacity dividing ageing etc. after series of process with the mode of laser welding metal
Plug and battery cover board are welded into one.
And during forming and capacity dividing, it needs repeatedly to remove sealing-plug, the gas of inside battery is discharged, to avoid causing
The pressure of inside battery increases, labor intensive and time.
Summary of the invention
One of purpose of the invention is to propose a kind of battery cover board assembly and battery, for alleviating battery assembly operation
Complicated problem.
Some embodiments of the present invention provide a kind of battery cover board assembly comprising:
Cover board, for connecting battery body；The cover board is equipped with through-hole, and the through-hole is for being connected to the battery body
Hole, to inject electrolyte into the battery body, and for the gas in the battery body to be discharged；And
Cover plate, movably be set to the cover board, the cover plate include the first station and second station, first station,
The cover plate avoids the through-hole, injects electrolyte into the battery body will pass through the through-hole, or by the battery
Intrinsic gas discharge；The second station, the cover plate cover the through-hole.
In some embodiments, the area coverage of the cover plate is greater than the area of the through-hole.
In some embodiments, the cover board is equipped with the first slot and the second slot being connected to the through-hole；
The cover plate is configured to be located in first slot in first station；
The cover plate is configured to cover the through-hole in the second station, and the partial portion of the cover plate is located at institute
It states in the first slot, partial portion is located in second slot.
In some embodiments, first slot and second slot are set to the inside of the cover board.
In some embodiments, the cover board is equipped with third slot, and the third slot is connected to first slot and the lid
The outside of plate；
The battery cover board assembly further includes impeller, and one end of the impeller connects the cover plate, the impeller
The other end by the third slot position in the outside of the cover board；The impeller is configured to slide along the third slot,
To push the cover plate to be located at first station or second station.
In some embodiments, battery cover board assembly includes airtight and watertight padding, and the airtight and watertight padding is configured in the lid
It when piece is located at the second station, is filled in the through-hole, the cover plate is connect with the cover plate for sealing.
In some embodiments, the through-hole includes the first hole and the second hole, and the aperture in first hole is less than described the
The aperture in two holes, first slot and second slot are connected to second hole.
In some embodiments, first slot and second slot are set to the surface of the cover board.
In some embodiments, first slot is greater than second slot described in along the size of the cover plate moving direction
The size of cover plate moving direction.
Some embodiments of the present invention provide a kind of battery comprising battery body and above-mentioned battery cover board assembly.
Based on the above-mentioned technical proposal, the present invention at least has the advantages that
In some embodiments, battery cover board assembly includes cover board and is movably set to the cover plate of cover board, by movably
Cover plate is moved to second station when needing to cover through-hole by the cover plate on cover board, is needing to inject electricity to battery body
Liquid is solved, or when needing for the gas in battery body to be discharged, cover plate is moved to the first station, easy to operate, simplification is close
Process is sealed, while greatling save manpower and time, while avoiding battery battery core caused by sealing-plug switching in the related technology dirty
The problem of dye.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram for the battery cover board assembly that some embodiments of the invention provide；
Fig. 2 is the schematic cross-sectional view of the partial enlargement for the battery cover board assembly that some embodiments of the invention provide.
Numbering in the drawing explanation:
1- cover board；2- through-hole；The first hole 21-；The second hole 22-；3- cover plate；The first slot of 4-；The second slot of 5-；6- third slot；
7- impeller.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment
It states.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Bright embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on battery just
The orientation or positional relationship being often used under state, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the scope of the present invention.
As shown in Figure 1, the battery cover board assembly provided for some embodiments comprising cover board 1 and cover plate 3.
Cover board 1 is for connecting battery body.Optionally, the top surface of battery body is arranged in cover board 1.It is additionally provided on cover board 1
It is respectively used to the positive strap and negative straps that the anode of battery body is connected with cathode.
Cover board 1 is equipped with through-hole 2.In the case where cover board 1 is set to battery body, through-hole 2 is connected to the hole on battery body, leads to
Electrolyte is injected in the hole on through-hole 2 and battery body crossed on cover board 1 into battery body, and passes through 2 He of through-hole on cover board 1
Gas in battery body is discharged in hole on battery body, prevents the pressure in battery body from increasing.
Cover plate 3 is movably set to cover board 1.Cover plate 3 includes the first station and second station.Cover plate 3 is in the first station, cover plate
3 evacuation through-holes 2 inject electrolyte into battery body will pass through through-hole 2, or the gas in battery body are discharged.Cover plate 3
In second station, cover plate 3 covers through-hole 2, avoids inside battery contaminated.
In some embodiments, can be when needing to cover through-hole 2 by the cover plate 3 being movably set on cover board 1, it will
Cover plate 3 is moved to second station, is needing to inject electrolyte to battery body, or needing the gas row in battery body
When out, cover plate 3 is moved to the first station, it is easy to operate, avoid sealing-plug switching in the related technology from causing the battery core quilt of battery
The problem of air pollution, simplifies sealing process, while greatling save manpower and time.
In some embodiments, when the processes such as battery liquid-filling, forming and capacity dividing finish, by the covering through-hole 2 of cover plate 3, and will lid
Piece 3 is welded and fixed with cover board 1, replaces sealing nail and sealing-plug in the related technology, and the metallic particles for avoiding rivet nut from generating is fallen
The problems such as causing short circuit into inside battery.
Optionally, cover plate 3 is installed on cover board 1 through automatic riveting.
In some embodiments, the area coverage of cover plate 3 is greater than the area of through-hole 2.
Optionally, the shape of cover plate 3 includes rectangular, circle or other shapes.
Optionally, the outer edge of cover plate 3 exceeds outer edge 2mm~3mm of through-hole 2.
In some embodiments, cover board 1 is equipped with the first slot 4 and the second slot 5 being connected to through-hole 2.
Cover plate 3 is configured to be located in the first slot 4 in the first station, to avoid through-hole 2.
Cover plate 3 is configured to cover through-hole 2 in second station, and the partial portion of cover plate 3 is located in the first slot 4, part
Position is located in the second slot 5, through-hole 2 is completely covered.
In some embodiments, the first slot 4 and the second slot 5 are set to the inside of cover board 1.
In some embodiments, cover board 1 is equipped with third slot 6, the outside of first slot of the connection of third slot 64 and cover board 1.
Battery cover board assembly further includes impeller 7, and one end of impeller 7 connects cover plate 3, and the other end of impeller 7 passes through
Third slot 6 is located at the outside of cover board 1；Impeller 7 be configured to along third slot 6 slide, with push cover plate 3 be located at the first station or
Second station.
Optionally, the material of cover plate 3 and impeller 7 is as the material of cover board 1.
Optionally, impeller 7 is connect with the end far from the second slot 5 of cover plate 3.
In some embodiments, the width that the diameter of cover plate 3 or side length are less than cover board 1 is greater than the diameter of through-hole 2.Therefore,
The position of impeller 7 can carry out appropriate reasonable adjustment according to the size of cover plate 3.
Optionally, the side length of cover plate 3 or diameter are 2.5mm~3.5mm, therefore, impeller 7 be located at apart from through-hole 2mm~
The place of 3mm.
In some embodiments, the inside of cover board 1 is equipped with the first slot 4 and the second slot 5 of connection through-hole 2, relative to through-hole 2
A step surface is formed, step surface left side is hollow structure with right side；Hollow structure is for placing sealed cover slip 3；Cover plate 3 and promotion
Part 7 is connected, and impeller 7 is used to control the position where cover plate 3.
Optionally, the part for the outside that impeller 7 is located at cover board 1 by third slot 6 is bent, makes the end of impeller 7
The surface of cover board 1 is tightly attached in portion, not only convenient for promotion cover plate 3, but also will not excessively increase the volume of battery cover board assembly.
In some embodiments, battery cover board assembly includes airtight and watertight padding, and airtight and watertight padding is configured to be located at the in cover plate 3
It when two stations, is filled in through-hole 2, cover plate 3 and cover board 1 is tightly connected.Replace sealing nail welding in the related technology, keeps away
The metallic particles for exempting from rivet nut generation falls the problems such as causing short circuit into inside battery.
In the case where battery cover board assembly is set at the top of battery body, airtight and watertight padding is configured to be located at the in cover plate 3
It when two stations, is filled in through-hole 2, and is located at the top of cover plate 3, cover plate 3 and cover board 1 are tightly connected.
In some embodiments, through-hole 2 includes the first hole 21 and the second hole 22, and the aperture in the first hole 21 is less than the second hole 22
Aperture, the first slot 4 and the second slot 5 are connected to the second hole 22.
In the case where battery cover board assembly is set at the top of battery body, the first hole 21 is relative to the second hole 22 close to battery
Ontology.
In some embodiments, the first slot 4 and the second slot 5 are set to the surface of cover board 1.
In some embodiments, the first slot 4 is greater than the second slot 5 along 3 moving direction of cover plate along the size of 3 moving direction of cover plate
Size.First slot 4 is used for accommodating portion cover plate 3 for accommodating entire cover plate 3, the second slot 5, i.e. being greater than for receiving cover plate 3 leads to
The partial portion in hole 2.
In some embodiments, the operating method of battery cover board assembly are as follows:
When fluid injection is completed, alternatively, passing through impeller 7 when removing battery from forming and capacity dividing cabinet after the completion of forming and capacity dividing
Cover plate 3 is slided toward the direction of through-hole 2, until cover plate 3 covers all through-hole 2, realizes once sealing.
In the fluid injection into battery body, alternatively, when forming and capacity dividing, by impeller 7 by cover plate 3 to the negative side of through-hole 2
To sliding, until cover plate 3 leaves the position of through-hole 2.
In laser welding, cover plate 3 is covered into through-hole 2, one will be welded with the first groove 4 and the second groove 5 around cover plate 3
Circle (cover plate 3 and cover board 1 weld together), can save sealing nail welding, to realize secondary seal (cover plate 3 and cover board 1
Material is consistent), while the metallic particles for also avoiding rivet nut generation in the related technology falls into inside battery and causes short circuit
Technical problem.
Some embodiments provide a kind of batteries comprising battery body and above-mentioned battery cover board assembly.
In some embodiments, battery cover board assembly is set to the top of battery body.The bottom for the through-hole 2 being arranged on cover board 1
Portion is equipped with the plug division in the hole of insertion battery body, to realize the sealed connection between the hole on through-hole 2 and battery body.
In the description of the present invention, it is to be understood that, zero is limited using the words such as " first ", " second ", " third "
Component, it is only for convenient for distinguishing to above-mentioned parts, do not have Stated otherwise such as, above-mentioned word contains there is no special
Justice, therefore should not be understood as limiting the scope of the invention.
In addition, it is clearly negate in the case where, the technical characteristic of one of embodiment can valuably with other
One or more embodiments be combined with each other.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (10)
1. a kind of battery cover board assembly characterized by comprising
Cover board (1), for connecting battery body；The cover board (1) is equipped with through-hole (2), and the through-hole (2) is for being connected to the electricity
Hole on the ontology of pond, to inject electrolyte into the battery body, and for the gas in the battery body to be discharged；With
And
Cover plate (3), movably be set to the cover board (1), the cover plate (3) include the first station and second station, described first
Station, the cover plate (3) avoid the through-hole (2), will pass through injection electrolysis in the through-hole (2) Xiang Suoshu battery body
Liquid, or the gas in the battery body is discharged；The second station, the cover plate (3) cover the through-hole (2).
2. battery cover board assembly as described in claim 1, which is characterized in that the area coverage of the cover plate (3) is greater than described
The area of through-hole (2).
3. battery cover board assembly as described in claim 1, which is characterized in that the cover board (1) is equipped with the through-hole (2) even
Logical the first slot (4) and the second slot (5)；
The cover plate (3) is configured to be located in first slot (4) in first station；
The cover plate (3) is configured to cover the through-hole (2), and the partial portion of the cover plate (3) in the second station
In first slot (4), partial portion is located in second slot (5).
4. battery cover board assembly as claimed in claim 3, which is characterized in that first slot (4) and second slot (5) are set
In the inside of the cover board (1).
5. battery cover board assembly as claimed in claim 4, which is characterized in that
The cover board (1) is equipped with third slot (6), and the third slot (6) is connected to first slot (4) and the cover board (1)
It is external；
The battery cover board assembly further includes impeller (7), and one end of the impeller (7) connects the cover plate (3), described to push away
The other end of moving part (7) is located at the outside of the cover board (1) by the third slot (6)；The impeller (7) is configured to edge
Third slot (6) sliding, to push the cover plate (3) to be located at first station or second station.
6. battery cover board assembly as claimed in claim 4, which is characterized in that including airtight and watertight padding, the airtight and watertight padding is by structure
Make when the cover plate (3) is located at the second station, to be filled in the through-hole (2), by the cover plate (3) with it is described
Cover board (1) is tightly connected.
7. battery cover board assembly as claimed in claim 4, which is characterized in that the through-hole (2) includes the first hole (21) and the
Two holes (22), the aperture of first hole (21) are less than the aperture of second hole (22), first slot (4) and described second
Slot (5) is connected to second hole (22).
8. battery cover board assembly as claimed in claim 3, which is characterized in that first slot (4) and second slot (5) are set
In the surface of the cover board (1).
9. battery cover board assembly as claimed in claim 3, which is characterized in that first slot (4) is mobile along the cover plate (3)
The size in direction is greater than second slot (5) along the size of the cover plate (3) moving direction.
10. a kind of battery, which is characterized in that including battery body and battery cover board group as described in any one of claims 1 to 9
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640690.XA CN110233214A (en) | 2019-07-16 | 2019-07-16 | Battery cover board assembly and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640690.XA CN110233214A (en) | 2019-07-16 | 2019-07-16 | Battery cover board assembly and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110233214A true CN110233214A (en) | 2019-09-13 |
Family
ID=67855073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910640690.XA Pending CN110233214A (en) | 2019-07-16 | 2019-07-16 | Battery cover board assembly and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110233214A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4050712A4 (en) * | 2020-12-30 | 2023-01-25 | Contemporary Amperex Technology Co., Limited | End cover assembly, battery cell and liquid injection method therefor, battery, and power-consuming device |
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| CN203746983U (en) * | 2014-02-14 | 2014-07-30 | 丰田自动车株式会社 | Sealed type battery |
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| CN209843759U (en) * | 2019-07-16 | 2019-12-24 | 珠海格力电器股份有限公司 | Battery cover plate assembly and battery |
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| KR19980021293A (en) * | 1996-09-16 | 1998-06-25 | 박병재 | Automotive Fuel Inlet Door Open System |
| CN101593824A (en) * | 2008-05-28 | 2009-12-02 | 深圳市比克电池有限公司 | A kind of battery seal plate and battery |
| CN201438475U (en) * | 2009-05-18 | 2010-04-14 | 深圳市瑞达电源有限公司 | Battery and battery cover |
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| CN203746983U (en) * | 2014-02-14 | 2014-07-30 | 丰田自动车株式会社 | Sealed type battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4050712A4 (en) * | 2020-12-30 | 2023-01-25 | Contemporary Amperex Technology Co., Limited | End cover assembly, battery cell and liquid injection method therefor, battery, and power-consuming device |
| US11710871B2 (en) | 2020-12-30 | 2023-07-25 | Contemporary Amperex Technology Co., Limited | End cover assembly, battery cell and electrolyte injection method therefor, battery, and power consumption device |
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