CN110379951A - A kind of novel power battery top cover - Google Patents
A kind of novel power battery top cover Download PDFInfo
- Publication number
- CN110379951A CN110379951A CN201910448396.9A CN201910448396A CN110379951A CN 110379951 A CN110379951 A CN 110379951A CN 201910448396 A CN201910448396 A CN 201910448396A CN 110379951 A CN110379951 A CN 110379951A
- Authority
- CN
- China
- Prior art keywords
- power battery
- top cover
- battery top
- baffle
- gas permeable
- 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
Classifications
-
- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
-
- 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
-
- 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
Abstract
The invention discloses a kind of novel power battery top covers, fixed cover including reinforcing soleplate and connection fixed thereto, the pressure relief device of supplied gas discharge is equipped between the reinforcing soleplate and fixed cover, the pressure relief device includes a separate cavities, a support plate, a gas permeable wall and a compressibility support construction, the separate cavities upper end carries out back cover with selective gas permeable devices with ventilative web plate sealing, lower end；The support plate is set on separate cavities side wall, and section is L-type, which is provided with a baffle, a sealing structure is set between the support plate and baffle；Between ventilative web plate and support plate, the gas permeable wall two sides are equipped with the slideway for barrier slides, and the gas permeable wall does not contact directly with the side wall of separate cavities.Structure of the invention is ingenious in design, and the explosion-protection equipment of design is durable, extends the service life of device, reduces production cost, has indirectly achieved the purpose that protect environment, and fluid injection is extremely convenient, is a power battery top cover being worth of widely use.
Description
Technical field
The present invention relates to power battery technology fields, and in particular to a kind of novel power battery top cover.
Background technique
The development of modern society is much using resource exhaustion as cost, and the exploitation of mineral resources in many cities successively enters
Later period, advanced stage or reaching advanced stages face the situation of such sternness, and every country greatly develops new energy technology, herein big ring
In border, new-energy automobile obtains development energetically, while deriving a series of hair of technologies of the parts thereof of power battery
Exhibition.
The purpose of power battery top cover is primarily to protection power battery interior structure, power battery top in the prior art
Lid there is also some technical immature, on the one hand, for guarantee power battery security performance, avoid due to charge it is improper or
Power battery interior air pressure is excessive caused by the factors such as person's overshoot explodes, and is generally arranged on power battery top cover explosion-proof
Valve realizes that gas washes the purpose that explosion-proof valve carries out pressure release open, and the rupture pressure disc on existing explosion-proof valve is after prolonged use
The fatigue phase can be rapidly entered, sealing performance is affected greatly, accelerates the damage of power battery；On the other hand, the prior art
Middle liquid injection hole is easy to produce bubble in fluid injection, and generally also rubber tack is needed to be sealed after the completion of fluid injection, operates more numerous
It is trivial.Therefore our there is an urgent need for a kind of explosion-protection equipments durable, convenient power battery top covers of fluid injection.
Summary of the invention
For the problems raised in the background art, the present invention provides a kind of novel power battery top cover, solves explosion-proof dress
It sets and is not durable and the technical problem of fluid injection inconvenience.
The technical solution that the present invention takes to achieve the above object are as follows: a kind of novel power battery top cover, including reinforce
Bottom plate and the fixed cover of connection fixed thereto, the pressure release that supplied gas discharge is equipped between the reinforcing soleplate and fixed cover fill
It sets, the pressure relief device includes:
One separate cavities, the separate cavities upper end are sealed with ventilative web plate, and lower end carries out back cover with selective gas permeable devices；
One support plate, the support plate are set on separate cavities side wall, and section is L-type, which is provided with a baffle, the support plate
A sealing structure is set between baffle；
One gas permeable wall is set between ventilative web plate and support plate, and the gas permeable wall two sides are equipped with the slideway for barrier slides, described
Gas permeable wall does not contact directly with the side wall of separate cavities；
One compressibility support construction is set between baffle and ventilative web plate.
Further, the selective gas permeable devices include the waterproof and breathable being arranged among two layers of sieve plate and the two
Film.
Further, it is fusiform sealing element and the rubber set on baffle bottom surface that the sealing structure, which includes a section,
Pad, the rubber pad can produce a small deformation to adapt to the shape of sealing element, and the sealing element lower end passes through splicing
Mode is fixedly connected with fixed erecting bed on the supporting plate, and a compressed spring is also set inside the sealing element.
Further, the compressibility support construction includes a sleeve and the compression rod being socketed with it, the compression rod end
The side wall of portion and sleeve seals to form a closed space.
Further, the extension spring that sub-barrier pushes, the drawing are equipped between the baffle and selective gas permeable devices
It stretches in the fixed column that spring one end is fixed on selective gas permeable devices, one end is fixedly connected with baffle.
It further, further include a fluid injection chamber, the fluid injection chamber runs through entire power battery top cover, and the upper end opening sets one
Autonomous plugging structure.
Further, the autonomous plugging structure includes the two fan cover boards for being hinged on fluid injection chamber opening, is set to the cover board
The torsionspring of lower section, one fall the liquid injection port of convex and the supporting and space of a support liquid injection port, under the liquid injection port
End is equipped with two outlet tubes.
Further, the supporting and space two sides set a partition respectively, are equipped with below the cover board and support answering for the partition
Position spring, the reset spring is interior to be equipped with spacer pin, and the supporting and space bottom is equipped with two liquid outlet channels.
Further, insulating protective layer is covered on the fixed cover.
Further, " I " fonts support base is equipped between the fixed cover and reinforcing soleplate.
Beneficial effects of the present invention:
1. compressibility support construction has very strong toughness, prolonged utilize is repeated, it is not easy to enter the fatigue of operation
Phase can prolong its service life, and the extension spring that sub-barrier pushes is even more to increase by one layer of guarantee；
2. the sealing structure between baffle and support plate increases the leakproofness of device, avoid because the setting of pressure relief device and
The drawbacks of causing sealing performance to weaken, the elasticity that sealing element itself has be suitable for baffle it is different between support plate at a distance from,
The rubber pad being arranged below baffle can produce a subtle deformation to adapt to the different radians of sealing element, the pressure of inside setting
Contracting spring makes sealing element remain a preferable activity, avoids following the string using overlong time, increases sealing effect, prolongs
Service life is grown；
3. the autonomous plugging structure being arranged, the cumbersome of fluid injection is avoided, cover board plays the role of blocks dust, injection needle when fluid injection
Head pushes liquid injection port, and liquid injection pipe and liquid outlet channel is made to carry out fluid injection to it, and fluid injection completes liquid injection port after taking out fluid injection syringe needle and exists
Liquid outlet channel closure can not be continued fluid injection by upper lift under the action of reset spring, easy to operate.
Detailed description of the invention
Fig. 1 is top view of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the part A schematic enlarged-scale view of pressure relief device of the invention；
Fig. 4 is the B structure enlarged drawing of sealing structure of the invention；
Fig. 5 is the C-structure enlarged drawing of the autonomous plugging structure of fluid injection chamber of the invention；
Fig. 6 is the structural schematic diagram of the fluid injection syringe needle to match with the fluid injection chamber in the present invention.
Digital representation in figure:
1, reinforcing soleplate 2, fixation are covered 3, fixed plate 4, insulating protective layer 5, support base 6, positive terminal 7, negative terminal 8, are kept away
Allow hole 9, insulation sleeve 10, separate cavities 11, ventilative web plate 12, support plate 13, baffle 14, sealing element 15, rubber pad 16,
Erecting bed 17, compressed spring 18, sieve plate 19, waterproof ventilated membrane 20, gas permeable wall 21, slideway 22, sleeve 23, compression
Rod 24, extension spring 25, fixed column 26, fluid injection chamber 27, cover board 28, torsionspring 29, liquid injection port 30, supporting and space
31, partition 32, reset spring 33, spacer pin 34, outlet tube 35, liquid outlet channel 36, fluid injection syringe needle 37, snap-gauge 38, logical
Hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment belongs to protection scope of the present invention.
In description of the invention, it is to be understood that "front", "rear" in term, " vertical ", "left", "right", "upper",
The orientation or positional relationship of the instructions such as "lower" is to be based on the orientation or positional relationship shown in the drawings, this hair of description merely for convenience
Bright and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
As depicted in figs. 1 and 2, a kind of novel power battery top cover, consolidating including reinforcing soleplate 1 and connection fixed thereto
Surely cover 2, connect a fixed plate 3 on the reinforcing soleplate 1, is covered with one layer of insulating protective layer 4 on the fixed cover 2, fixed cover 2 with
It is equipped with " I " fonts support base 5 between fixed plate 3, increases the rigidity of power battery top cover in the least situation that increases weight,
One end of power battery top cover sets a positive terminal 6, and opposite one end is equipped with a negative terminal 7, is all enclosed on the outer wall of the two absolutely
Edge set 9, the positive terminal 6 and negative terminal 7 sequentially pass through insulating protective layer 4, fixed cover 2 and fixed plate 3, open on reinforcing soleplate 1
There are an avoid holes 8, being connected to convenient for positive terminal 6 and negative terminal 7 with power battery interior makes its normal work.
To avoid because improper or overshoot the factor that charges causes power battery air pressure is excessive to explode, in power electric
A pressure relief device is set on the top cover of pond, as shown in Figures 2 to 4, the pressure relief device includes a separate cavities 10, is fixed on the isolation
The separate cavities 10 are carried out the selective gas permeable devices of back cover and are fixed on the isolation by the ventilative web plate 11 of 10 opening of chamber
Its section on 10 side wall of chamber is the support plate 12 of L-type, and the support plate 12 is equipped with a baffle 13, baffle 13 and support plate 12
Between be equipped with a sealing structure, the sealing structure include a section be fusiform sealing element 14 and be set to 13 bottom surface of baffle
Rubber pad 15, the sealing element 14 is fixedly connected by way of splicing with the erecting bed 16 being fixed in support plate 12, institute
Stating rubber pad 15 can produce a small deformation to adapt to radian different caused by the upper top surface of sealing element 14, keep its close
It is more preferable to seal effect, a compressed spring 17 is also set inside the sealing element 14, the elasticity that sealing element 14 has itself is suitable for baffle
13 it is different between support plate 12 at a distance from, inside setting compressed spring 17 so that sealing element 14 is remained preferable activity,
It avoids following the string using overlong time, increases sealing effect, extend service life；It is described selectivity gas permeable devices include
The waterproof ventilated membrane 19 being arranged among two layers of sieve plate 18 and the two, 19 permission air permeables of waterproof ventilated membrane, liquid
It can not pass through, avoid electrolyte and carrying out pressure release type exudation, upper layer and lower layer sieve plate 18, which has reached, protects waterproof ventilated membrane
Purpose；Gas permeable wall 20 is equipped between ventilative web plate 11 and support plate 12,20 two sides of gas permeable wall are equipped with mobile for baffle 13
Slideway 21, the gas permeable wall 20 do not contact directly with the side wall of separate cavities 10, and there are certain spaces, when baffle 13 entirely exists
When more than 20 bottom of gas permeable wall, gas can be escaped from gas permeable wall 20 is passed through using ventilative web plate 11；The compressibility support
Structure includes a sleeve 22 and the compression rod 23 that is socketed with it, and the formation one of compression 23 end of rod and sleeve 22 seals sky
Between, the air pressure between compression rod 23 and sleeve 22, which has reached one, under natural conditions can stablize baffle 13 and ventilative web plate 11
Fixed equilibrium valve, then one is applied to baffle 13 and is upwarded pressure, the air in 23 compressible sleeve of rod is compressed, continues to be retracted
It is a part of in sleeve 22；It should be noted that the stabilization between sub-barrier 13 and support plate 12, the baffle 13 and selection
Property gas permeable devices between be equipped with extension spring 24, described 24 one end of extension spring, which is fixed on, is set to consolidating on selective gas permeable devices
On fixed column 25, one end is fixedly connected with baffle 13, can generate the power pulled down to baffle 13, baffle 13 is made to be pressed in support plate
On 12.
As shown in figure 5, the fluid injection for convenience of power battery operates, the fluid injection chamber 26 being arranged on power battery top cover is opened
An autonomous back cover structure is set at mouthful, the autonomous plugging structure includes the two fan cover boards 27 for being hinged on 26 opening of fluid injection chamber, sets
Torsionspring 28, one in 27 lower section of the cover board falls the liquid injection port 29 of convex and contained structure supports the liquid injection port
29 supporting and space 30,30 two sides of supporting and space set a partition 31 respectively, be equipped with below the cover board 27 support it is described every
The reset spring 32 of plate 31, the reset spring 32 is interior to be equipped with spacer pin 33, and 30 bottom of supporting and space is equipped with two and goes out liquid
Channel 35, when compressing liquid injection port 29 pushes, after two outlet tubes 34 that 29 lower end of liquid injection port is equipped with are aligned with liquid outlet channel 35
Fluid injection is carried out, removes priming device after the completion of fluid injection, liquid injection port 29, which moves up, to block reservoir channel.
As shown in fig. 6, for the autonomous closure knot designed on a kind of novel power battery top cover proposed in the present embodiment
Structure proposes a kind of matching fluid injection syringe needle 36, and 36 upper end of fluid injection syringe needle is equipped with two groups of snap-gauges 37, which gets close to
The through-hole 38 that supplied gas passes through is equipped at 36 ontology of fluid injection syringe needle, gas can be discharged from through-hole 38 when carrying out fluid injection, be not likely to produce
Bubble, it should be noted that the radius of fluid injection syringe needle 36 is less than 29 lower half portion radius of liquid injection port, 37 diameter of snap-gauge is slightly less than note
The diameter on 29 head of liquid mouth, the through-hole 38 on the snap-gauge 37 are wanted to be stopped completely by the blocking portion of liquid injection port 29, in addition, two cards
The distance of plate 37 is less than the length of cover board 27, avoids injection process cover plate 27 from starting upwards, it has not been convenient to take fluid injection syringe needle 36
Out.
Implementation principle:
A kind of novel power battery top cover disclosed by the invention, reinforcing soleplate 1 and fixed cover 2 form power battery top cover
Basic framework, the fixed plate 3 being arranged on reinforcing soleplate 1 increase the rigidity of power battery top cover, and insulating protective layer 4 gives power electric
Pond top cover increases one layer of new protection, and the " I " fonts support base 5 of inside setting can increase the stability of power battery, simultaneously
Alleviate its weight.When the air pressure of power battery interior is excessive, pressure relief device is needed to carry out pressure release processing to it, operation principles are such as
Under, gas passes through waterproof ventilated membrane 19 first, a upward impulse force is generated to baffle 13, when air pressure reaches certain value, and pressure
Air in the meeting compression sleeve 22 of contracting rod 23 makes compression rod continue to be pressed into a part in sleeve 22, drives baffle 13 along slideway 21
It is lifted up, until baffle 13 is separated from the work of sealing element 14 at this time when the entire part of baffle 13 is on 20 bottom end of gas permeable wall
With gas may pass through gas permeable wall 20 and escape from ventilative web plate 11 again, so can reach the purpose of pressure release, works as power battery interior
Air pressure when reducing, the air pressure in sleeve 22 pushes compression rod 23 to be displaced outwardly, and cooperates the effect of extension spring 24, drives baffle
13 fall back in support plate 12, and the cooperation with sealing element 14 is completed to seal again.
When needing to carry out fluid injection, the fluid injection syringe needle 36 of priming device can be put in directly down, force cover board 27 to push, first
Snap-gauge 37 into liquid injection port 29 compresses the blocking portion to be formed because diameter becomes smaller, and makes its band 31 compression reseting spring 32 of dynamic dividing plate
Until being against on spacer pin 33, two outlet tubes 34 that 29 lower end of liquid injection port is equipped at this time are aligned with liquid outlet channel 35, and electrolyte is just
Power battery interior can be entered, removes priming device after the completion of fluid injection, liquid injection port 29, which moves up, to block reservoir channel.It needs
It is however emphasized that two snap-gauges 37 at least one the power of a compressing is generated to cover board 27 always, facilitate the disengaging of fluid injection syringe needle 36,
Fluid injection syringe needle 36 is prevented to be stuck in 27 lower section of cover board.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of novel power battery top cover, the fixed cover including reinforcing soleplate and connection fixed thereto, which is characterized in that also
Including the pressure relief device being discharged for power battery interior gas, the pressure relief device includes:
One separate cavities, the separate cavities upper end are sealed with ventilative web plate, and lower end carries out back cover with selective gas permeable devices；
One support plate, the section of the support plate are L-type, are set on separate cavities side wall, place a baffle thereon, the baffle with
A sealing structure is set between support plate；
One gas permeable wall is set between ventilative web plate and support plate, and the gas permeable wall two sides are equipped with the slideway mobile for baffle, described
There are certain spaces between gas permeable wall and the side wall of separate cavities；
One compressibility support construction is set between baffle and ventilative web plate.
2. a kind of novel power battery top cover according to claim 1, it is characterised in that: the selectivity gas permeable devices packet
Include the waterproof ventilated membrane being arranged among two layers of sieve plate and the two.
3. a kind of novel power battery top cover according to claim 1 or 2, it is characterised in that: the sealing structure includes
One section is fusiform sealing element and the rubber pad set on baffle bottom surface, and the rubber pad can produce a small deformation
To adapt to the radian of top surface on sealing element, erecting bed of the sealing element lower end by way of splicing with fixation on the supporting plate
It is fixedly connected, a compressed spring is also set inside the sealing element.
4. a kind of novel power battery top cover according to claim 3, it is characterised in that: the compressibility support construction
Including a sleeve and the compression rod being socketed with it, the side wall of the compression rod end and sleeve seals to form a closed space.
5. a kind of novel power battery top cover according to claim 4, it is characterised in that: the baffle and selectivity are ventilative
The extension spring that sub-barrier is pushed is equipped between device, described extension spring one end, which is fixed on, is set to the ventilative dress of selectivity
In the fixed column set, one end is fixedly connected with baffle.
6. a kind of novel power battery top cover according to claim 1, it is characterised in that: it further include a fluid injection chamber, it is described
Fluid injection chamber runs through entire power battery top cover, and the upper end opening sets an autonomous plugging structure.
7. a kind of novel power battery top cover according to claim 6, it is characterised in that: the autonomous plugging structure includes
The two fan cover boards, the torsionspring below the cover board, a section of fluid injection chamber opening are hinged in " convex " font
The supporting and space of liquid injection port and a support liquid injection port, the liquid injection port lower end is equipped with two outlet tubes.
8. a kind of novel power battery top cover according to claim 7, it is characterised in that: the supporting and space two sides difference
If a partition, it is equipped with the reset spring for supporting the partition below the cover board, is arranged a spacer pin, institute in the reset spring
Supporting and space bottom is stated equipped with two liquid outlet channels.
9. a kind of novel power battery top cover according to claim 1, it is characterised in that: be covered with insulation on the fixed cover
Protective layer.
10. a kind of novel power battery top cover according to claim 1, it is characterised in that: the fixed cover and reinforcing bottom
" I " fonts support base is equipped between plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448396.9A CN110379951A (en) | 2019-05-28 | 2019-05-28 | A kind of novel power battery top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448396.9A CN110379951A (en) | 2019-05-28 | 2019-05-28 | A kind of novel power battery top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110379951A true CN110379951A (en) | 2019-10-25 |
Family
ID=68248798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910448396.9A Pending CN110379951A (en) | 2019-05-28 | 2019-05-28 | A kind of novel power battery top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110379951A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639902A (en) * | 2020-12-16 | 2022-06-17 | 比亚迪股份有限公司 | Battery cover plate assembly and battery |
| WO2022252114A1 (en) * | 2021-06-01 | 2022-12-08 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery cell, battery, and manufacturing device and method for battery cell |
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| CN208570687U (en) * | 2018-09-05 | 2019-03-01 | 池州市骏智机电科技有限公司 | Multiple Anti-pressure lithium dynamical battery lamina tecti |
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| EP2161768A1 (en) * | 2008-09-01 | 2010-03-10 | Accumalux S.A. | Battery cover |
| CN103219680A (en) * | 2011-11-16 | 2013-07-24 | 金成福 | The cover of the systembox to install in floor |
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| CN114639902A (en) * | 2020-12-16 | 2022-06-17 | 比亚迪股份有限公司 | Battery cover plate assembly and battery |
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| WO2022252114A1 (en) * | 2021-06-01 | 2022-12-08 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery cell, battery, and manufacturing device and method for battery cell |
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| CN115701781B (en) * | 2021-06-01 | 2024-01-23 | 宁德时代新能源科技股份有限公司 | End cap assembly, battery cell, battery, and apparatus and method for manufacturing battery cell |
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Effective date of registration: 20191118 Address after: 224700 Tianjin five industrial park, Tianjin Road, Jianhu County, Yancheng City, China Applicant after: Yancheng Wei Shi Amperex Technology Limited Address before: 224799 No.3 Tingwu Industrial Park, Tianjin Road, Jianhu County Economic Development Zone, Yancheng City, Jiangsu Province Applicant before: Jiangsu Huafeng Amperex Technology Limited |
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Application publication date: 20191025 |