CN107316957A - A kind of integral type cover plate and the secondary cell using above-mentioned cover plate - Google Patents
A kind of integral type cover plate and the secondary cell using above-mentioned cover plate Download PDFInfo
- Publication number
- CN107316957A CN107316957A CN201710481440.7A CN201710481440A CN107316957A CN 107316957 A CN107316957 A CN 107316957A CN 201710481440 A CN201710481440 A CN 201710481440A CN 107316957 A CN107316957 A CN 107316957A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- stop frame
- insulating part
- integral type
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 12
- 230000000740 bleeding effect Effects 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 206010033546 Pallor Diseases 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction 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
- 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
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of integral type cover plate and using the secondary cell of above-mentioned cover plate, stop frame is fixedly mounted on below substrate in advance, it ensure that stop frame and substrate fix reliability during assembling, reduce the stop frame installation procedure in cell assembling processes, improve packaging efficiency, effectively prevent core play in housing, it is to avoid core comes to harm during play up and down, reduce potential safety hazard；In further design, stop frame is riveted by insulating part with substrate and fixed, and improves the two installation reliability, is simultaneously effective solved stop frame and is coordinated unstable problem with battery cover board.
Description
Technical field
The present invention relates to battery processing technique field, more particularly to a kind of integral type cover plate and using the secondary of above-mentioned cover plate
Battery.
Background technology
With the development and the enhancing of environmental consciousness of modern society, increasing equipment selection can be used with charging cycle
Secondary cell as power supply, such as mobile phone, notebook computer, electric bicycle, electric automobile, this is chargeable secondary electricity
The application and development in pond provide wide space.Especially in recent years, under the guiding of national relevant policies, electric automobile is walked
The road developed rapidly has been gone up, has been that the development of secondary cell particularly electrokinetic cell creates opportunity, while also to secondary cell
Performance propose higher requirement.
In order to prevent the core inside secondary cell from directly being contacted with battery cover board, it can typically be set between core and cover plate
A stop frame is put, core and cover plate are separated, so that the insulation of core and cover plate is realized, while preventing core in battery case
Internal play.But stop frame and cover plate conventional at present is split, although stop frame can be controlled to a certain extent
Core play, but stop frame is unconfined in itself, causes core and stop frame still to there is the risk of play up and down.So
Core can be caused to be destroyed during play up and down, potential safety hazard is caused.
Meanwhile, when stop frame and cover plate use split, in the production process of assembled battery, add the work of stop frame
Sequence, increases cost of labor, reduces production efficiency, virtually add cost.
The content of the invention
To solve technical problem present in background technology, the present invention proposes a kind of integral type cover plate and uses above-mentioned cover plate
Secondary cell.
A kind of integral type cover plate proposed by the present invention and the secondary cell using above-mentioned cover plate, including substrate and stop frame,
Stop frame is fixed on below substrate.
Preferably, in addition to：First pole, the second pole, the first pressing plate, the second pressing plate, the first insulating part, the second insulation
Part；
Substrate is provided with the first construction opening and the second construction opening；
Stop frame is provided with the first fixing groove corresponding with the first construction opening and corresponding with the second construction opening second
Fixing groove；
First insulating part is located at first construction opening, and the first insulating part bottom is provided with first connecting portion and described the
One connecting portion is fixed through first construction opening with first fixing groove, and the first insulating part is provided with the first fixing hole,
First pressing plate is located on the first insulating part and the first installation through-hole is provided with the middle part of the first pressing plate, and first pole one end is pacified through first
Dress through hole is fixed by the first fixing hole with the first insulating part；
Second insulating part is located at second construction opening, and the second insulating part bottom is provided with second connecting portion and described the
Two connecting portions are fixed through second construction opening with second fixing groove, and the second insulating part is provided with the second fixing hole,
Second pressing plate is located on the second insulating part and the second installation through-hole is provided with the middle part of the second pressing plate, and second pole one end is pacified through second
Dress through hole is fixed by the second fixing hole with the second insulating part.
Preferably, the first insulating part is riveted by first connecting portion and the first fixing groove of stop frame, and the second insulating part leads to
The second fixing groove for crossing second connecting portion and stop frame is riveted.
Preferably, the first pole lower end is riveted with the first fixing hole, and the second pole lower end is riveted with the second fixing hole.
Preferably, substrate is provided with air bleeding valve, and air bleeding valve is located between the first construction opening and the second construction opening, stop
Top of the trellis is provided with the groove extended along stop frame width, air bleeding valve the groove open top projection in the plane
In the groove.
Preferably, the groove bottom is provided with multiple auxiliary air vents, and multiple auxiliary air vents are distributed along stop frame length direction.
Preferably, stop frame is provided with fluid injection opening, and substrate is provided with the liquid injection hole with the fluid injection open communication.
Preferably, multiple reinforcement dividing plates are provided with the fluid injection opening, multiple reinforcement dividing plates divide along stop frame width
The fluid injection opening is divided into many height openings by cloth.
The invention also provides a kind of secondary cell, including：Housing, core and above-mentioned integral type cover plate；
Core is located in housing, and cover plate for sealing is arranged on housing, and core is provided with the first lug and the second lug, first
Lug and the second lug are connected with the first pole and the second pole of cover plate respectively.
Preferably, it is coated with coating outside core, coating adopts that made of plastic and the two passes through blanching side with stop frame
Formula is fixed.
In the present invention, the integral type cover plate and the secondary cell using above-mentioned cover plate proposed, stop frame is fixed in advance to pacify
Below substrate, it ensure that stop frame and substrate fix reliability during assembling, reduce the stop frame in cell assembling processes
Installation procedure, improves packaging efficiency, effectively prevents core play in housing, it is to avoid core up and down during play by
Injury, reduces potential safety hazard；In further design, stop frame is riveted by insulating part with substrate and fixed, and is improved the two and is installed
Reliability, simultaneously effective solves stop frame and coordinates unstable problem with battery cover board.
Brief description of the drawings
Fig. 1 is a kind of structural representation of integral type cover plate proposed by the present invention.
Fig. 2 is a kind of structural representation of the stop frame of integral type cover plate proposed by the present invention.
Fig. 3 is a kind of structural representation of the insulating part of integral type cover plate proposed by the present invention.
Fig. 4 is a kind of structural representation of secondary cell proposed by the present invention.
Embodiment
As shown in Figures 1 to 4, Fig. 1 is a kind of structural representation of integral type cover plate proposed by the present invention, and Fig. 2 is the present invention
A kind of structural representation of the stop frame of the integral type cover plate proposed, Fig. 3 is exhausted for a kind of integral type cover plate proposed by the present invention
The structural representation of edge part, Fig. 4 is a kind of structural representation of secondary cell proposed by the present invention.
Referring to figs. 1 to 3, a kind of integral type cover plate proposed by the present invention and the secondary cell using above-mentioned cover plate, including base
Plate 1 and stop frame 2, stop frame 2 are fixed on the lower section of substrate 1.
In substrate and stop frame are specifically fixedly mounted, in addition to：First pole 3, the second pole 4, the first pressing plate 5,
Two pressing plates 6, the first insulating part 7, the second insulating part 8；
Substrate 1 is provided with the first construction opening and the second construction opening；
Stop frame 2 is provided with the first fixing groove corresponding with the first construction opening and corresponding with the second construction opening second
Fixing groove；
First insulating part 7 is located at first construction opening, and the bottom of the first insulating part 7 is provided with first connecting portion and described
First connecting portion is fixed through first construction opening with first fixing groove, and the first insulating part 7 is fixed provided with first
Hole, the first pressing plate 5 is located on the first insulating part 7 and the middle part of the first pressing plate 5 is provided with the first installation through-hole, and the one end of the first pole 3 is worn
The first installation through-hole is crossed to fix with the first insulating part 7 by the first fixing hole；
Second insulating part 8 is located at second construction opening, and the bottom of the second insulating part 8 is provided with second connecting portion and described
Second connecting portion is fixed through second construction opening with second fixing groove, and the second insulating part 8 is fixed provided with second
Hole, the second pressing plate 6 is located on the second insulating part 8 and the middle part of the second pressing plate 6 is provided with the second installation through-hole, and the one end of the second pole 4 is worn
The second installation through-hole is crossed to fix with the second insulating part 8 by the second fixing hole.
In a specific embodiment, the first insulating part 7 is riveted by first connecting portion and the first fixing groove of stop frame 2,
Second insulating part 8 is riveted by second connecting portion and the second fixing groove of stop frame 2, the lower end of the first pole 3 and the first fixing hole
Riveting, the lower end of the second pole 4 is riveted with the second fixing hole.
In the present embodiment, the integral type cover plate proposed, stop frame is fixedly mounted on below substrate in advance, it is ensured that only
Moving frame and substrate fix reliability；In further design, stop frame is riveted by insulating part with substrate and fixed, and is improved the two and is pacified
Reliability is filled, stop frame is simultaneously effective solved and coordinates unstable problem with battery cover board.
In other embodiments, substrate 1 is provided with air bleeding valve 9, and air bleeding valve 9 is located at the first construction opening and second
Between construction opening, the top of stop frame 2 is provided with the groove extended along the width of stop frame 2, and air bleeding valve 9 is at the top of the groove
Opening institute's projection in the plane is in the groove；By setting groove below air bleeding valve, it is easy to assemble front-seat air valve
The discharge of welding slag when on substrate is welded to, can effectively prevent welding slag and other impurities from remaining, causes to fall into core during assembling,
Potential safety hazard is produced, simultaneously so that enough spaces are left between stop frame and air bleeding valve, is conducive to exhaust valve operation by electricity
The gas discharge of in-core.
In further embodiment, the groove bottom is provided with multiple auxiliary air vents, and multiple auxiliary air vents edges are stopped
The length direction of moving frame 2 is distributed, and groove bottom sets auxiliary gas 20, is further easy to electric pool gas to discharge.
In other embodiments, stop frame 2 is provided with fluid injection opening, and substrate 1 is provided with and the fluid injection opening
The liquid injection hole of connection；Further, provided with multiple reinforcement dividing plates 10 in the fluid injection opening, multiple dividing plates 10 of strengthening are along stop frame
The fluid injection opening is divided into many height openings by the distribution of 2 widths；By setting multiple reinforcement dividing plates in opening, on the one hand
Play a part of reinforcement, improve stop frame intensity, on the other hand, during injection electrolyte, electrolyte passes through many height opening streams
Enter in housing, improve electrolyte distributing homogeneity.
Reference picture 4, the present embodiment also proposes a kind of secondary cell, including：Housing 11, core 12 and above-mentioned integral cover
Plate；
Core 12 is located in housing 11, and cover plate for sealing is arranged on housing 11, and core 12 is provided with the first lug and second
Lug, the first lug and the second lug are connected with the first pole 3 and the second pole 4 of cover plate respectively.
In the present embodiment, the secondary cell proposed, stop frame is fixedly mounted on below substrate in advance, during assembling, is subtracted
The stop frame installation procedure in cell assembling processes is lacked, has improved packaging efficiency, effectively prevented core play in housing, keep away
Exempt from core to come to harm during play up and down, reduce potential safety hazard.
Coating 13 is coated with outside the fixation reliability of core, core 12 in order to improve, coating 13 is used with stop frame 2
Plastics are made and the two is fixed by blanching mode, further improve core steadiness in housing after assembling.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and hair
Bright design is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of integral type cover plate, it is characterised in that including substrate (1) and stop frame (2), stop frame (2) is fixed on substrate (1)
Lower section.
2. integral type cover plate according to claim 1, it is characterised in that also include：First pole (3), the second pole
(4), the first pressing plate (5), the second pressing plate (6), the first insulating part (7), the second insulating part (8)；
Substrate (1) is provided with the first construction opening and the second construction opening；
Stop frame (2) is consolidated provided with the first fixing groove corresponding with the first construction opening and corresponding with the second construction opening second
Determine groove；
First insulating part (7) is located at first construction opening, and the first insulating part (7) bottom is provided with first connecting portion and described
First connecting portion is fixed through first construction opening with first fixing groove, and the first insulating part (7) is consolidated provided with first
Determine hole, the first pressing plate (5) is located on the first insulating part (7) and the first installation through-hole, the first pole are provided with the middle part of the first pressing plate (5)
(3) one end is fixed by the first fixing hole and the first insulating part (7) through the first installation through-hole；
Second insulating part (8) is located at second construction opening, and the second insulating part (8) bottom is provided with second connecting portion and described
Second connecting portion is fixed through second construction opening with second fixing groove, and the second insulating part (8) is consolidated provided with second
Determine hole, the second pressing plate (6) is located on the second insulating part (8) and the second installation through-hole, the second pole are provided with the middle part of the second pressing plate (6)
(4) one end is fixed by the second fixing hole and the second insulating part (8) through the second installation through-hole.
3. integral type cover plate according to claim 2, it is characterised in that the first insulating part (7) by first connecting portion with
The first fixing groove riveting of stop frame (2), the second insulating part (8) passes through second connecting portion and the second fixing groove of stop frame (2)
Riveting.
4. integral type cover plate according to claim 2, it is characterised in that the first pole (3) lower end and the first fixing hole riveting
Connect, the second pole (4) lower end is riveted with the second fixing hole.
5. integral type cover plate according to claim 2, it is characterised in that substrate (1) is provided with air bleeding valve (9), air bleeding valve
(9) it is located between the first construction opening and the second construction opening, is provided with and prolongs along stop frame (2) width at the top of stop frame (2)
The groove stretched, air bleeding valve (9) the groove open top projection in the plane be located in the groove.
6. integral type cover plate according to claim 5, it is characterised in that the groove bottom is provided with multiple auxiliary air vents
(20), multiple auxiliary air vents (20) are distributed along stop frame (2) length direction.
7. integral type cover plate according to claim 1, it is characterised in that stop frame (2) is provided with fluid injection opening, substrate
(1) provided with the liquid injection hole with the fluid injection open communication.
8. integral type cover plate according to claim 7, it is characterised in that multiple reinforcement dividing plates are provided with the fluid injection opening
(10), multiple reinforcement dividing plates (10) are distributed along stop frame (2) width is divided into many height openings by the fluid injection opening.
9. a kind of secondary cell, it is characterised in that including：Housing (11), core (12) and one according to claim 1-7
Body formula cover plate；
Core (12) is located in housing (11), and cover plate for sealing is arranged on housing (11), core (12) provided with the first lug and
Second lug, the first lug and the second lug are connected with the first pole (3) and the second pole (4) of cover plate respectively.
10. secondary cell according to claim 8, it is characterised in that be coated with coating (13), coating outside core (12)
(13) adopted with stop frame (2) it is made of plastic and the two fixed by blanching mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481440.7A CN107316957B (en) | 2017-06-22 | 2017-06-22 | Integral type apron and adopt secondary battery of above-mentioned apron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481440.7A CN107316957B (en) | 2017-06-22 | 2017-06-22 | Integral type apron and adopt secondary battery of above-mentioned apron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107316957A true CN107316957A (en) | 2017-11-03 |
| CN107316957B CN107316957B (en) | 2020-03-20 |
Family
ID=60183735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710481440.7A Active CN107316957B (en) | 2017-06-22 | 2017-06-22 | Integral type apron and adopt secondary battery of above-mentioned apron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107316957B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109860449A (en) * | 2019-03-25 | 2019-06-07 | 中兴高能技术有限责任公司 | Battery cover board and cover board welding tooling, battery preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6207319B1 (en) * | 1998-09-10 | 2001-03-27 | Samsung Display Devices Co., Ltd. | Cap assembly for secondary battery |
| CN102347512A (en) * | 2011-09-27 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | Large-capacity lithium ion battery |
| CN202454638U (en) * | 2011-12-27 | 2012-09-26 | 上海比亚迪有限公司 | Square secondary battery |
| CN105206765A (en) * | 2015-08-17 | 2015-12-30 | 合肥国轩高科动力能源有限公司 | Lithium battery multi-tab process welding cover plate |
-
2017
- 2017-06-22 CN CN201710481440.7A patent/CN107316957B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6207319B1 (en) * | 1998-09-10 | 2001-03-27 | Samsung Display Devices Co., Ltd. | Cap assembly for secondary battery |
| CN102347512A (en) * | 2011-09-27 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | Large-capacity lithium ion battery |
| CN202454638U (en) * | 2011-12-27 | 2012-09-26 | 上海比亚迪有限公司 | Square secondary battery |
| CN105206765A (en) * | 2015-08-17 | 2015-12-30 | 合肥国轩高科动力能源有限公司 | Lithium battery multi-tab process welding cover plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109860449A (en) * | 2019-03-25 | 2019-06-07 | 中兴高能技术有限责任公司 | Battery cover board and cover board welding tooling, battery preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107316957B (en) | 2020-03-20 |
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