CN114171815B - Recycling equipment and method for waste lithium ion battery cover plate - Google Patents
Recycling equipment and method for waste lithium ion battery cover plate Download PDFInfo
- Publication number
- CN114171815B CN114171815B CN202111406670.XA CN202111406670A CN114171815B CN 114171815 B CN114171815 B CN 114171815B CN 202111406670 A CN202111406670 A CN 202111406670A CN 114171815 B CN114171815 B CN 114171815B
- Authority
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- China
- Prior art keywords
- conveying belt
- platform
- ion battery
- lithium ion
- battery cover
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- 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.)
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 49
- 239000002699 waste material Substances 0.000 title claims abstract description 45
- 238000004064 recycling Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 11
- 238000005498 polishing Methods 0.000 claims abstract description 30
- 239000000428 dust Substances 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 14
- 238000005488 sandblasting Methods 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000009830 intercalation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000010865 sewage Substances 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Abstract
The invention discloses recycling equipment for waste lithium ion battery cover plates, which comprises a recycling platform, wherein the recycling platform comprises a conveying device, a front platform and a rear platform, the front platform and the rear platform are connected through the conveying device, supporting legs are arranged at the bottoms of the front platform and the rear platform, the conveying device comprises a first conveying belt and a second conveying belt, the first conveying belt and the second conveying belt are arranged between the front platform and the rear platform through supporting shafts arranged on the supporting legs, L-shaped clamping plates are arranged on the surfaces of the front platform and the rear platform between the middle part of the second conveying belt and the left end of the recycling platform, polishing devices are arranged on the surfaces of the front platform and the rear platform between the first conveying belt and the second conveying belt, and the upper surfaces of the polishing devices are coplanar with the upper surfaces of the supporting parts.
Description
Technical Field
The invention relates to the technical field of recycling of waste lithium ion battery cover plates, and in particular belongs to recycling equipment and method of waste lithium ion battery cover plates.
Background
A lithium ion battery is a secondary battery (rechargeable battery) that operates mainly by means of lithium ions moving between a positive electrode and a negative electrode. During charge and discharge, li + To-and-fro intercalation and deintercalation between two electrodes: during charging, li + De-intercalation from the positive electrode, and intercalation into the negative electrode through the electrolyte, wherein the negative electrode is in a lithium-rich state; the opposite is true when discharging. The lithium battery has excellent charge and discharge performance, so that the lithium battery is widely applied to power machinery and equipment, but after long-time charge and discharge, the service performance of the lithium battery is reduced, the lithium battery needs to be replaced, in order to avoid environmental pollution, the replaced lithium battery needs to be subjected to professional disassembly and recovery treatment, but the shell disassembled by the lithium battery has a large amount of residual dirt, dust, grease and the like on the surface, so that the waste lithium battery shell needs to be reprocessed to realize regeneration, and the waste lithium after disassembly and cuttingThe ion battery cover plate needs to be subjected to dust removal, polishing, rust removal and other treatment processes, and manual cleaning is troublesome, so that equipment for conveniently recycling the waste lithium ion battery cover plate is needed.
Disclosure of Invention
The invention aims to provide a recycling device and a recycling method for a waste lithium ion battery cover plate, which overcome the defects of the prior art and facilitate the treatment of the waste lithium ion battery cover plate.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the recycling equipment for the waste lithium ion battery cover plate comprises a recycling platform, wherein the recycling platform comprises a conveying device, a front platform and a rear platform, the front platform and the rear platform are connected through the conveying device, supporting legs are arranged at the bottoms of the front platform and the rear platform, the conveying device comprises a first conveying belt and a second conveying belt, the first conveying belt and the second conveying belt are arranged between the front platform and the rear platform through supporting shafts arranged on the supporting legs, the first conveying belt is positioned at the left side of the second conveying belt, the supporting shafts at the left side of the first conveying belt are driven through first motors arranged on the supporting legs, the supporting shafts at the right side of the second conveying belt are driven through second motors arranged on the supporting legs, L-shaped clamping plates are arranged on the surfaces of the front platform and the rear platform between the middle part of the second conveying belt and the left end of the recycling platform, the first conveying belt and the second conveying belt penetrate through spaces formed by the front platform and the rear platform and the clamping plates, the supporting shafts at the left side of the first conveying belt and the second conveying belt are provided with a shared polishing surface between the first conveying belt and the second conveying belt and the upper supporting platform and the upper surface of the polishing device;
the polishing device comprises a third driving motor arranged on the rear platform, a polishing roller arranged between the front platform and the rear platform is arranged on a rotating shaft of the third driving motor, and the first driving motor, the second driving motor and the third driving motor are electrically connected with an external power supply.
The supporting shaft comprises a supporting rod and a supporting column arranged on the surface of the supporting rod, and the supporting column is in friction contact with the first conveying belt and the second conveying belt.
Preferably, the polishing roller comprises a shaft rod, an elastic support body and a polishing belt, wherein the polishing belt and the elastic support body are sequentially wrapped on the shaft rod from outside to inside, and the shaft rod is connected with a rotating shaft of the third driving motor.
Preferably, the supporting part is a plurality of elastic ribs which are arranged on the surfaces of the first conveying belt and the second conveying belt in parallel, and the ribs are arranged along the movement direction of the first conveying belt and the second conveying belt.
Preferably, the upper surface of the clamping plate at the first conveying belt is also provided with a dust removing device, the dust removing device comprises a dust removing box, an air knife and a dust collecting pipe, the dust removing box is fixedly arranged on the clamping plate on the front platform and the rear platform, the air knife is fixedly arranged at the top of the right side of the dust removing box, an air outlet of the air knife is obliquely arranged leftwards, and the dust collecting pipe is arranged at the top of the left side of the dust removing box.
Preferably, the upper surface of the clamping plate at the second conveyor belt is also provided with a sand blasting device.
Preferably, the upper surface of the clamping plate on the right side of the sand blasting device is also provided with a spraying device, the spraying device comprises a water spraying pipe, a plurality of water spraying holes are formed in the lower surface of the water spraying pipe, and the water spraying pipe is connected with an external water source.
Preferably, the front platform and the rear platform on the right side of the clamping plate are also provided with high-pressure spray pipes, the lower surfaces of the high-pressure spray pipes are provided with a plurality of spray heads which are arranged obliquely leftwards, and the high-pressure spray pipes are connected with an external high-pressure water source.
The method for recycling the waste lithium ion battery cover plate comprises the following steps of firstly removing floating ash and impurities on the surface of the waste lithium ion battery cover plate by using high-pressure airflow, then removing refractory impurities on the top surface of the waste lithium ion battery cover plate by polishing to clean the surface of the waste lithium ion battery cover plate as new, then carrying out sand blasting on the lower structure of the polished waste lithium ion battery cover plate to remove residual stains in the waste lithium ion battery cover plate, and finally washing with water and washing under high pressure, and drying to obtain the recycled lithium ion battery cover plate.
Compared with the prior art, the invention has the following implementation effects:
1. according to the invention, through the cooperation of the first conveying belt, the second conveying belt and the clamping plate, the waste lithium ion battery cover plates placed on the first conveying belt and the second conveying belt can be conveyed forwards under the friction extrusion of the convex ribs, and the elastic convex ribs play a role of elastic support, so that the waste lithium ion battery cover plates are prevented from being clamped in the conveying process.
2. The dust removing device provided by the invention can effectively remove dust on the surface of the cover plate of the waste lithium ion battery under the blowing action of the air knife, and the dust suction pipe can suck the dust blown up in the dust removing box, so that the environment is prevented from being polluted.
3. The polishing roller has the function of elastic polishing, so that the polishing roller can effectively squeeze and polish the surface of the waste lithium ion battery cover plate, and the polishing effect is improved.
4. According to the invention, the polished waste lithium ion battery cover plate is subjected to sand blasting and rust removal, and then is subjected to water washing and high-pressure flushing, so that the surface of the finally obtained recovered lithium ion battery cover plate is clean and can be recycled, the convex edge is beneficial to drainage, and the high-pressure nozzle flushes the sewage on the second conveying belt leftwards, so that the pollution of the recovered lithium ion battery cover plate on the right side of the clamping plate is avoided.
5. The device provided by the invention is convenient to use, can automatically treat the waste lithium ion battery cover plate, and improves the working efficiency.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the structure of the right side of the recovery platform with the front and rear platforms mated;
FIG. 4 is a schematic view of the structure of the interior of the dust box;
fig. 5 is a schematic view of the structure of the grinding roller.
1. A recycling platform; 10. waste lithium ion battery cover plate; 11. a clamping plate; 12. a support leg; 13. a first support plate; 14. a second support plate; 15. a third support plate; 16. a support frame; 2. a first conveyor belt; 21. a support part; 22. a first driving motor; 23. a support rod; 24. a support column; 3. a second conveyor belt; 4. a dust removal box; 41. a dust collection pipe; 42. an air inlet pipe; 43. an air knife; 44. an air outlet; 5. a third driving motor; 51. a shaft lever; 52. a support body; 53. polishing the belt; 6. a sand blasting device; 7. a water spray pipe; 8. a high pressure nozzle; 81. a spray head; 9. and a second driving motor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific direction to construct and operate in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1-5, the recycling equipment for the waste lithium ion battery cover plate 10 comprises a recycling platform 1, wherein the recycling platform 1 comprises a conveying device, a front platform and a rear platform, the front platform and the rear platform are connected through the conveying device, a supporting leg 12 is arranged at the bottoms of the front platform and the rear platform, the conveying device comprises a first conveying belt 2 and a second conveying belt 3, the first conveying belt 2 and the second conveying belt 3 are arranged between the front platform and the rear platform through supporting shafts arranged on the supporting leg 12, the first conveying belt 2 is positioned at the left side of the second conveying belt 3, the supporting shafts comprise supporting rods 23 and supporting columns 24 arranged on the surfaces of the supporting rods 23, the supporting columns 24 are in friction contact with the first conveying belt 2 and the second conveying belt 3, the supporting shafts at the left side of the first conveying belt 2 are driven through a first motor arranged on the supporting leg 12 by using a first supporting plate 13, the supporting shafts at the right side of the second conveying belt 3 are driven through a second motor arranged on the supporting leg 12 by using a third supporting plate 15, the front clamping plate 11 and the rear clamping plate 11 arranged on the left end of the second conveying belt 3 to the left end of the recycling platform 1, the first conveying belt 3 is arranged on the front surface of the front platform and the rear platform and the second conveying belt 2, the supporting plate 2 is arranged on the surface of the front platform and the second conveying belt 2 and the front platform 2 is in friction contact with the second conveying belt 3, and the front clamping plate 3 is arranged on the surface of the front platform and the front surface of the front plate 2 and the rear platform.
The polishing device comprises a third driving motor 5 arranged on a rear platform by using a second supporting plate 14, a polishing roller arranged between a front platform and the rear platform is arranged on the rotating shaft of the third driving motor 5, the polishing roller comprises a shaft rod 51, an elastic supporting body 52 and a polishing belt 53, the polishing belt 53 and the elastic supporting body 52 are sequentially wrapped on the shaft rod 51 from outside to inside, the shaft rod 51 is connected with the rotating shaft of the third driving motor 5, and the first driving motor 22, the second driving motor 9 and the third driving motor 5 are electrically connected with an external power supply.
Example 2
As a further technical solution of the present invention, the supporting portion 21 is preferably a plurality of elastic ribs parallel to the surfaces of the first conveyor belt 2 and the second conveyor belt 3, and the ribs are disposed along the movement direction of the first conveyor belt 2 and the second conveyor belt 3, and the supporting portion 21 may be replaced by elastic protruding points, elastic triangular cones, etc., and the elastic protruding points, and the elastic triangular cones are all made of rubber.
Example 3
As a further technical scheme of the invention, the upper surface of the clamping plate 11 at the first conveyor belt 2 is also provided with a dust removing device, the dust removing device comprises a dust removing box 4, an air knife 43 and a dust collecting pipe 41, the dust removing box 4 is fixedly arranged on the clamping plate 11 on the front platform and the rear platform, the air knife 43 is fixedly arranged at the top of the right side of the dust removing box 4, an air outlet 44 of the air knife 43 is obliquely arranged leftwards, the dust collecting pipe 41 is arranged at the top of the left side of the dust removing box 4, the air knife 43 is connected with an external high-pressure air source through an air inlet pipe 42, and the dust collecting pipe 41 is connected with an external dust collector.
Example 4
As a further technical scheme of the invention, the upper surface of the clamping plate 11 at the second conveyor belt 3 is also provided with a sand blasting device 6, and the model is LS-ss800-12A. The upper surface of the clamping plate 11 on the right side of the sand blasting device 6 is also provided with a spraying device through a supporting frame 16, the spraying device comprises a water spraying pipe 7, a plurality of water spraying holes are formed in the lower surface of the water spraying pipe 7, and the water spraying pipe 7 is connected with an external water source. The front platform and the rear platform on the right side of the clamping plate 11 are also provided with a high-pressure spray pipe 8 through a support frame 16, the lower surface of the high-pressure spray pipe 8 is provided with a plurality of spray heads 81 which are arranged obliquely leftwards, and the high-pressure spray pipe 8 is connected with an external high-pressure water source.
Example 5
The method for recycling the waste lithium ion battery cover plate 10 by using the recycling equipment comprises the following steps that firstly, the waste lithium ion battery cover plate 10 is inserted between a clamping plate 11 and a first conveying belt 2 from the left end of a recycling platform 1, then a first driving motor 22, a second driving motor 9 and a third driving motor 5 are started, the waste lithium ion battery cover plate 10 is conveyed forwards, floating ash and impurities on the surface of the waste lithium ion battery cover plate 10 are removed by high-pressure air flow in a dust removal device, the waste lithium ion battery cover plate 10 is conveyed forwards through the first conveying belt 2, refractory impurities on the top surface of the waste lithium ion battery cover plate 10 are removed through polishing by a polishing roller, the surface of the waste lithium ion battery cover plate 10 is clean as new, then the second conveying belt 3 continuously conveys the polished waste lithium ion battery cover plate 10 forwards, the lower structure of the waste lithium ion battery cover plate 10 is subjected to sand blasting treatment through a sand blasting device 6, residual dirt in the waste lithium ion battery cover plate 10 is removed, finally, the waste lithium ion battery cover plate is obtained after washing and high-pressure flushing and drying.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a waste lithium ion battery apron recycling equipment, includes recovery platform (1), its characterized in that: the recycling platform (1) comprises a conveying device, a front platform and a rear platform, the front platform and the rear platform are connected through the conveying device, a supporting leg (12) is arranged at the bottoms of the front platform and the rear platform, the conveying device comprises a first conveying belt (2) and a second conveying belt (3), the first conveying belt (2) and the second conveying belt (3) are arranged between the front platform and the rear platform through supporting shafts arranged on the supporting leg (12), the first conveying belt (2) is positioned at the left side of the second conveying belt (3), the supporting shafts at the left side of the first conveying belt (2) are driven through a first driving motor arranged on the supporting leg (12), the supporting shafts at the right side of the second conveying belt (3) are driven through a second driving motor arranged on the supporting leg (12), L-shaped clamping plates (11) are arranged on the front platform and the rear platform between the middle part of the second conveying belt (3) and the left end of the recycling platform (1), the first conveying belt (2) and the second conveying belt (3) penetrate through a first driving motor arranged on the first conveying belt (12) and the front platform (3) and the second conveying belt (3) respectively, the first conveying belt (3) and the second conveying belt (3) are arranged on the front platform and the front platform (2) and the rear platform (3) respectively, the upper surface of the polishing device is coplanar with the upper surface of the supporting part (21);
the polishing device comprises a third driving motor (5) arranged on the rear platform, a polishing roller arranged between the front platform and the rear platform is arranged on a rotating shaft of the third driving motor (5), and the first driving motor (22), the second driving motor (9) and the third driving motor (5) are electrically connected with an external power supply;
the polishing roller comprises a shaft rod (51), an elastic support body (52) and a polishing belt (53), wherein the polishing belt (53) and the elastic support body (52) are sequentially wrapped on the shaft rod (51) from outside to inside, and the shaft rod (51) is connected with a rotating shaft of a third driving motor (5);
the supporting parts (21) are a plurality of elastic ribs which are arranged on the surfaces of the first conveying belt (2) and the second conveying belt (3) in parallel, and the ribs are arranged along the movement direction of the first conveying belt (2) and the second conveying belt (3);
the upper surface of the clamping plate (11) at the first conveyor belt (2) is also provided with a dust removing device, the dust removing device comprises a dust removing box (4), an air knife (43) and a dust collecting pipe (41), the dust removing box (4) is fixedly arranged on the clamping plate (11) on the front platform and the rear platform, the air knife (43) is fixedly arranged at the top of the right side of the dust removing box (4), an air outlet (44) of the air knife (43) is obliquely arranged leftwards, and the dust collecting pipe (41) is arranged at the top of the left side of the dust removing box (4);
the high-pressure spray pipe (8) is further arranged on the front platform and the rear platform on the right side of the clamping plate (11), a plurality of spray heads (81) which are obliquely arranged leftwards are arranged on the lower surface of the high-pressure spray pipe (8), and the high-pressure spray pipe (8) is connected with an external high-pressure water source.
2. The recycling device for waste lithium ion battery cover plates according to claim 1, wherein: the upper surface of the clamping plate (11) at the second conveyor belt (3) is also provided with a sand blasting device (6).
3. The recycling device for the cover plate of the waste lithium ion battery according to claim 2, wherein the recycling device comprises the following components: the spraying device is further arranged on the upper surface of the clamping plate (11) on the right side of the sand blasting device (6), the spraying device comprises a water spraying pipe (7), a plurality of water spraying holes are formed in the lower surface of the water spraying pipe (7), and the water spraying pipe (7) is connected with an external water source.
4. The method for recycling and reusing the waste lithium ion battery cover plate according to claim 3, wherein the method comprises the following steps: the method comprises the following steps of firstly removing floating ash and impurities on the surface of a waste lithium ion battery cover plate by using high-pressure airflow, then removing refractory impurities on the top surface of the waste lithium ion battery cover plate by polishing to enable the surface of the waste lithium ion battery cover plate to be clean as new, then carrying out sand blasting on the lower structure of the polished waste lithium ion battery cover plate to remove residual stains in the waste lithium ion battery cover plate, and finally obtaining the recovered lithium ion battery cover plate after washing and high-pressure flushing and drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111406670.XA CN114171815B (en) | 2021-11-24 | 2021-11-24 | Recycling equipment and method for waste lithium ion battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111406670.XA CN114171815B (en) | 2021-11-24 | 2021-11-24 | Recycling equipment and method for waste lithium ion battery cover plate |
Publications (2)
| Publication Number | Publication Date |
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| CN114171815A CN114171815A (en) | 2022-03-11 |
| CN114171815B true CN114171815B (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202111406670.XA Active CN114171815B (en) | 2021-11-24 | 2021-11-24 | Recycling equipment and method for waste lithium ion battery cover plate |
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| CN (1) | CN114171815B (en) |
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| CN114171815A (en) | 2022-03-11 |
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