CN105161673B - The manufacturing process and multi pole ears battery of a kind of multi pole ears battery core - Google Patents

The manufacturing process and multi pole ears battery of a kind of multi pole ears battery core Download PDF

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Publication number
CN105161673B
CN105161673B CN201510691844.XA CN201510691844A CN105161673B CN 105161673 B CN105161673 B CN 105161673B CN 201510691844 A CN201510691844 A CN 201510691844A CN 105161673 B CN105161673 B CN 105161673B
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China
Prior art keywords
negative electrode
anode ear
lug
negative
electrode lug
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CN105161673A (en
Inventor
李卓
杨和山
陈湘彪
康环宇
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Fujian Zhige New Energy Battery Technology Co., Ltd.
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Dongguan General Exploring Battery Technology Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/04Processes of manufacture in general
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The present invention relates to the manufacturing process and multi pole ears battery of lithium battery production technical field, more particularly to a kind of multi pole ears battery core.The present invention has the following steps:A. active slurry interruption is coated on positive plate and negative plate, positive plate and negative plate that applying area and clear area are arranged in order is made;B. the first anode ear and the first negative electrode lug are respectively welded at the clear area of positive plate and negative plate made from step A;C. electrode slice made from step B is superimposed, the first anode ear and the first negative electrode lug the dislocation arrangement;D. electrode slice winding certain angle made from step C is formed into core, and the first anode ear or the first negative electrode lug is wrapped in the core;E. operation is wound using the core as spool, the second anode ear is welded in the position that the first anode ear is corresponded in positive plate clear area;Weld the second negative electrode lug in the position that the first negative electrode lug is corresponded in negative plate clear area;It ensure that all anode ear alignment and all negative electrode lugs align.

Description

The manufacturing process and multi pole ears battery of a kind of multi pole ears battery core
Technical field
The present invention relates to lithium battery production technical field, more particularly to a kind of manufacturing process and multi pole ears of multi pole ears battery core Battery.
Background technology
Nowadays, portable electronic product is less and less with the volume of electronic product into essential instrument, There is an urgent need to battery small, that power is high, stability is high, safe by people to meet electronic product to battery performance increasingly The demand of growth.Existing lithium ion battery mostly by positive and negative anodes pole piece stack be made, and between anode pole piece and cathode pole piece between Insulation diaphragm or insulation rubberised layer are separated with, active material layer is coated with pole piece, is connected with lug, preferable lug should be with electrode Piece is by being welded to connect.To further improve battery performance, it is necessary to need to ensure in the multiple lugs of pole piece setting, winding more again A anode ear energy alignment, the patent application of Application No. 200910192367.7 provide a kind of spiral-line multi-pole lug lithium from Sub- battery and its manufacture method, it can ensure multiple anode ear energy alignments to a certain extent, but by this method, its Lug is formed by being die cut, and lug can not have higher analysis lithium risk with electrode slice by being welded to connect.
It is therefore desirable to provide one kind not only to have can guarantee that multiple lug alignments, but also lug can be allowed to pass through weldering with electrode slice The battery core production technology connect in succession.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art provide a kind of manufacturing process of multi pole ears battery core, Ji Nengbao Multiple lug alignments are demonstrate,proved, and lug can be allowed to be produced with electrode slice by the battery core being welded to connect.
To achieve the above object, the manufacturing process of a kind of multi pole ears battery core of the invention, includes the following steps:
A. it is coated with active slurry:Active slurry interruption is coated on positive plate and negative plate, applying area and blank is made The positive plate and negative plate that area is arranged in order;
B. first pair pole ear is welded:First anode ear and the first negative electrode lug are respectively welded at positive plate made from step A With the clear area of negative plate;
C. positive plate and negative plate are superimposed:Electrode slice made from step B is superimposed, first anode ear and the first anode Ear dislocation arrangement;
D. it is wound into core:Electrode slice winding certain angle made from step C is formed into core, and by the first anode ear or First negative electrode lug is wrapped in the core;
E. lower a pair of of the lug of welding:Weld the second anode ear in the position that the first anode ear is corresponded in positive plate clear area; Weld the second negative electrode lug in the position that negative plate clear area corresponds to the first negative electrode lug;
F is adjacent to lug:Using step D-shaped into core continue to wind as spool, the step E lugs welded are close to volume Core.
Preferably, the step D is using the first anode ear and the first negative electrode lug as spool, by electrode slice made from step C 180 degree is wound, the position of the first anode ear is corresponded in positive plate clear area respectively and corresponds to the first anode in negative plate clear area The position mark of ear, then turns round certain angle by the electrode slice after winding, second is respectively welded according to the position of the mark Anode ear and the second negative electrode lug.
Preferably, in the step B, first anode ear and the first negative electrode lug are respectively welded at made from step A just Pole piece one end and negative plate one end.
Preferably, core made from step D is wound into certain angle, the position of the second anode ear is corresponded in positive plate clear area Put the 3rd anode ear of welding;Weld the 3rd negative electrode lug in the position that the second negative electrode lug is corresponded in negative plate clear area.
Preferably, first anode ear, the second anode ear and the 3rd anode ear be separately positioned on positive plate stem, in Portion and afterbody;First negative electrode lug, the second negative electrode lug and the 3rd negative electrode lug are separately positioned on stem, middle part and the afterbody of negative plate.
Preferably, second anode ear and the first anode ear are welded on to the same side of positive plate;Second anode Ear and the first negative pole lug welding are in the same side of negative plate.
Preferably, some anode ears and some negative are respectively welded in positive plate and negative plate successively in repeating said steps E and F Lug, and the direction wound every time is identical with last time coiling direction.Preferably, after each soldering polar ear, pasted on lug Insulate gummed paper.
Preferably, in step F, the step E lugs welded is close to after core and continue to wind several 180 degrees.
Preferably, soldering polar ear exit process is further included:All lugs are welded in after electrode slice, will be stacked in one All anode ear exit welding risen, all negative electrode lug exits stacked are welded.
Another object of the present invention is to provide a kind of multi pole ears battery, multiple lug alignment in view of the deficiencies of the prior art Arrangement, improves battery with two side terminals, and lug, by being welded to connect, avoids electrode slice from analysing lithium with electrode slice.
To achieve the above object, a kind of multi pole ears battery of the invention, includes a kind of manufacture of above-mentioned multi pole ears battery core Battery core made from any technique in technique.Beneficial effects of the present invention:Specifically, after positive plate and negative plate is made, first will First anode ear and the first negative electrode lug are respectively welded at positive plate and negative plate, then using the first anode ear and the first negative electrode lug as Spool, is respectively welded at positive plate and the corresponding position of negative plate by anode ear and negative electrode lug one by one, and clear area can be conveniently adjusted The position of tab welding, ensures all anode ear alignment after winding and all negative electrode lugs aligns, it can be achieved that being set in electrode slice Put compared with multi pole ears, not only can guarantee that alignment after multiple lug windings, but also can allow lug with electrode slice by being welded to connect, just In the raising power of battery and capacity;The phenomenon that the electrode slices of multi pole ears analyses lithium in lug area is avoided by welding procedure, is avoided The problems such as burr caused by cross cutting lug is big;Battery with two side terminals is improved, reduces production cost.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the battery core of the present invention.
Fig. 2 is the structure diagram at another visual angle of the battery core of the present invention.
The structure diagram of cross section when Fig. 3 is the positive plate and negative plate flat of the present invention.
Fig. 4 is the process flow chart of the present invention.
Fig. 5 is a kind of structure diagram of battery core made from a kind of manufacturing process of multi pole ears battery core of the present invention.
Reference numeral includes:
1-positive plate, 2-negative plate, 3-applying area
4-clear area
10-anode ear
11-the first the 13-the three anode ear of the 12-the second anode ear of anode ear
14-anode ear exit
20-negative electrode lug
21-the first the 23-the three negative electrode lug of the 22-the second negative electrode lug of negative electrode lug
24-negative electrode lug exit.
Embodiment
Below in conjunction with attached drawing, 1 ~ 5 couple of present invention is described in detail.
As shown in Figures 1 to 4, the manufacturing process of a kind of multi pole ears battery core of the invention, includes the following steps:A. coating is lived Property slurry:Active slurry interruption is coated on positive plate 1 and negative plate 2, applying area 3 is made and clear area 4 is arranged in order Positive plate 1 and negative plate 2;B. first pair pole ear is welded:First anode ear 11 and the first negative electrode lug 21 are respectively welded at step The clear area of positive plate 1 and negative plate 2 made from rapid A;C. positive plate 1 and negative plate 2 are superimposed:By electrode slice made from step B Superposition, 11 and first negative electrode lug 21 of the first anode ear dislocation arrangement;D. it is wound into core:By electrode slice made from step C Wind certain angle and form core, and the first anode ear 11 or the first negative electrode lug 21 are wrapped in the core, specifically can be by the One anode ear 11 and the first negative electrode lug 21 are wrapped in inside the core or are attached to outside the core;During winding, it can be wrapped with positive plate 1 Negative plate 2 is wrapped up in, can also the parcel positive plate 1 of negative plate 2;Can be the outermost that positive plate 1 is wrapped in battery core during winding ending Layer or negative plate 2 are wrapped in the outermost layer of battery core, it is preferred that negative plate 2 is wrapped in the outermost layer of battery core;E. weld Lower a pair of lug:Weld the second anode ear 12 in the position that the first anode ear 11 is corresponded in 1 clear area 4 of positive plate;It is empty in negative plate 2 Weld the second negative electrode lug 22 in the position that white area 4 corresponds to the first negative electrode lug 21.Step D and step E can be repeated several times, it is more to obtain Lug;F is adjacent to lug:Using step D-shaped into core continue to wind as spool, the step E lugs welded are close to volume Core, the lug that can preferably weld step E continue to wind several 180 degrees after being close to core, improve the second anode ear 12 Or second negative electrode lug 22 tightness, avoid battery core loose, improve the globality of battery core, while improve the charging and discharging of battery core Performance, easy to improve the power of battery and capacity.
Can pass through calculating according to the spacing distance of the empirically determined clear area 4 of actual design when being coated with active material layer Draw or first by the electrode slice coiling and molding of no soldering polar ear, mark lug position, then spread out according to lug Position determines the position of clear area 4 again;The first anode ear 11 and the first negative electrode lug 21 are first respectively welded at positive plate 1 and anode Piece 2, with the first anode ear 11 and the first negative electrode lug 21 for spool interval scrolling, one by one welds anode ear 10 and negative electrode lug 20 respectively It is connected on 2 corresponding position of positive plate 1 and negative plate;Clear area 4 can be conveniently adjusted the position of tab welding, own after ensureing winding Anode ear 10 align and all negative electrode lugs 20 align, it can be achieved that electrode slice set compared with multi pole ears, easy to improve battery work( Rate and capacity;The phenomenon of lithium is analysed by the welding lug area that avoids knowing clearly, the problems such as burr caused by avoiding cross cutting lug is big;Carry High battery with two side terminals, reduces production cost.
In the present embodiment, the step D be with the first anode ear 11 and the first negative electrode lug 21 for spool, can be by step C systems The electrode slice winding 180 degree obtained, corresponds to the position of the first anode ear 11 and in 2 blank of negative plate in 1 clear area 4 of positive plate respectively Area 4 corresponds to the position mark of the first negative electrode lug 21, the electrode slice after winding then is turned round certain angle, according to the mark The second anode ear 12 and the second negative electrode lug 22 is respectively welded in position.By mark, the positional precision of tab welding is improved, is ensured All anode ears 10 align after winding and all negative electrode lugs 20 align, and further increase battery with two side terminals;Core Revolution certain angle is welded again, is improved welding convenience, is reduced production cost.
In the present embodiment, in the step B, 11 and first negative electrode lug 21 of the first anode ear is respectively welded at step A Obtained 1 one end of positive plate and 2 one end of negative plate.Easy to using the first anode ear 11 and the first negative electrode lug 21 as spool, improve Winding speed, improves processing efficiency, reduces production cost.
In the present embodiment, core made from step D is wound into certain angle, the second cathode is corresponded in 1 clear area 4 of positive plate Weld the 3rd anode ear 13 in the position of ear 12;Weld the 3rd anode in the position that the second negative electrode lug 22 is corresponded in 2 clear area 4 of negative plate Ear 23;First anode ear 11, the second anode ear 12 and the 3rd anode ear 13 are separately positioned on stem, middle part and the tail of positive plate 1 Portion;First negative electrode lug 21, the second negative electrode lug 22 and the 3rd negative electrode lug 23 are separately positioned on stem, middle part and the afterbody of negative plate 2. Lug is set in the stem of electrode slice, middle part and afterbody, is conducive to the movement of electric charge, easy to reduce cell resistance, reduces battery Discharge and recharge temperature rise.It is further preferred that second anode ear 12 and the first anode ear 11 are welded on the same of positive plate 1 Side;Second negative electrode lug, 22 and first negative electrode lug 21 is welded on the same side of negative plate 2.
In the present embodiment, some anode ears 10 are respectively welded in positive plate 1 and negative plate 2 successively in repeating said steps E and F With some negative electrode lugs 20, and the direction wound every time is identical with last time coiling direction.Specifically, complete the second anode ear 12 and the After the welding of two negative electrode lugs 22, core rotates forward the position of 180 degree, the 3rd anode ear 13 of mark and the 3rd negative electrode lug 23, core Certain angle is turned round, easy to weld, is then welded the 3rd anode ear 13 and the 3rd negative electrode lug 23 according to the position of mark, is welded Afterwards, core is gone back to, and the 3rd anode ear 13 and the 3rd negative electrode lug 23 are close to the second anode ear 12 and the second negative electrode lug 22 respectively, Complete a welding interval;Above-mentioned welding interval is repeated, continues to weld more lugs.It is further preferred that pole is welded every time After ear, insulation gummed paper is pasted on lug.
Preferably, soldering polar ear exit process is further included:All lugs are welded in after electrode slice, can first by The battery core being rolled into is wrapped, and is then welded in together all anode ear exits 14 stacked, is made the institute stacked There is anode ear electrical connection, all negative electrode lug exits stacked are welded in together, make to stack is all negative Lug is electrically connected;It is convenient to draw anode ear and negative electrode lug, easy to which battery core is assembled into battery.
Fig. 5 discloses the citing of the battery core according to made from a kind of above-mentioned manufacturing process of multi pole ears battery core, of the invention Battery core made from any technique in a kind of multi pole ears battery, including a kind of manufacturing process of above-mentioned multi pole ears battery core, owns Anode ear 10 align and all negative electrode lugs 20 align, electrode slice can be set passes through welding compared with multi pole ears, lug with electrode slice Connection, easy to improve the power of battery and capacity;The electrode slice that multi pole ears are avoided by welding procedure analyses showing for lithium in lug area As avoiding the problems such as burr caused by being die cut lug is big;Battery with two side terminals is improved, easy to automated production, is reduced Production cost.Understand that the present invention is to have above-described good characteristic in summary, be able to make it upper in use, promote conventional The efficiency that does not have in technology and there is practicality, become the product of a great practical value.
Above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention's Thought, there will be changes, this specification content should not be construed as to the present invention in specific embodiments and applications Limitation.

Claims (9)

1. a kind of manufacturing process of multi pole ears battery core, it is characterised in that include the following steps:
A. it is coated with active slurry:By active slurry interruption be coated on positive plate (1) and negative plate (2), be made applying area (3) and The positive plate (1) and negative plate (2) that clear area (4) is arranged in order;
B. first pair pole ear is welded:First anode ear (11) and the first negative electrode lug (21) are respectively welded at made from step A just The clear area (4) of pole piece (1) and negative plate (2);
C. positive plate (1) and negative plate (2) are superimposed:Electrode slice made from step B is superimposed, first anode ear (11) and One negative electrode lug (21) dislocation arrangement;
D. it is wound into core:Electrode slice winding certain angle made from step C is formed into core, and by the first anode ear (11) or First negative electrode lug (21) is wrapped in the core, specifically, be with the first anode ear (11) and the first negative electrode lug (21) for spool into Row winding;
E. lower a pair of of the lug of welding:In positive plate (1) clear area (4), the second cathode is welded in the position of corresponding first anode ear (11) Ear (12);In negative plate (2) clear area (4), the second negative electrode lug (22) is welded in the position of corresponding first negative electrode lug (21);The step Rapid E is first respectively in the position of corresponding first anode ear (11) in positive plate (1) clear area (4) and right in negative plate (2) clear area (4) The position mark of the first negative electrode lug (21) is answered, the electrode slice after winding is then turned round into certain angle, according to the position of the mark Put and the second anode ear (12) and the second negative electrode lug (22) is respectively welded;
F. it is adjacent to lug:Using step D-shaped into core continue to wind as spool, the step E lugs welded are close to core.
A kind of 2. manufacturing process of multi pole ears battery core according to claim 1, it is characterised in that:It is described in the step B First anode ear (11) and the first negative electrode lug (21) are respectively welded at positive plate (1) one end made from step A and negative plate (2) one End.
A kind of 3. manufacturing process of multi pole ears battery core according to claim 1, it is characterised in that:By volume made from step D Core winds certain angle, and the 3rd anode ear is welded in the position of the clear area of positive plate (1) (4) corresponding second anode ear (12) (13);The 3rd negative electrode lug (23) is welded in the position of the clear area of negative plate (2) (4) corresponding second negative electrode lug (22).
A kind of 4. manufacturing process of multi pole ears battery core according to claim 3, it is characterised in that:First anode ear (11), the second anode ear (12) and the 3rd anode ear (13) are separately positioned on stem, middle part and the afterbody of positive plate (1);First Negative electrode lug (21), the second negative electrode lug (22) and the 3rd negative electrode lug (23) are separately positioned on stem, middle part and the tail of negative plate (2) Portion.
A kind of 5. manufacturing process of multi pole ears battery core according to claim 1, it is characterised in that:By second anode ear (12) the same side of positive plate (1) is welded on the first anode ear (11);Second negative electrode lug (22) and the first negative electrode lug (21) it is welded on the same side of negative plate (2).
A kind of 6. manufacturing process of multi pole ears battery core according to claim 1, it is characterised in that:Repeating said steps E and F Some anode ears and some negative electrode lugs are respectively welded in positive plate (1) and negative plate (2) successively, and the direction wound every time with it is upper Secondary coiling direction is identical.
A kind of 7. manufacturing process of multi pole ears battery core according to claim 1, it is characterised in that:After each soldering polar ear, Insulation gummed paper is pasted on lug.
A kind of 8. manufacturing process of multi pole ears battery core according to claim 1, it is characterised in that:In step F, by step E The lug of welding continues to wind several 180 degrees after being close to core.
A kind of 9. multi pole ears battery, it is characterised in that:Including according to a kind of multi pole ears according to any one of claims 1 to 8 Battery core made from the manufacturing process of battery core.
CN201510691844.XA 2015-10-23 2015-10-23 The manufacturing process and multi pole ears battery of a kind of multi pole ears battery core Active CN105161673B (en)

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CN107768711A (en) * 2017-08-31 2018-03-06 吉安力莱新能源科技有限公司 A kind of convoluted polymer battery of multi pole ears and its method for winding
CN107834014B (en) * 2017-09-18 2021-01-15 东莞市迈科新能源有限公司 High-power cylindrical lithium ion battery cell
CN109148823B (en) * 2018-08-23 2019-07-26 宁波瞬能科技有限公司 One kind is ultrafast to fill lithium ion battery electrode and its preparation method and application
CN110061181A (en) * 2019-04-22 2019-07-26 佛山市实达科技有限公司 A kind of battery and its electrode film, core
CN110071252A (en) * 2019-04-22 2019-07-30 佛山市实达科技有限公司 A kind of battery and its negative electrode plate, core
CN110364768B (en) * 2019-06-11 2021-05-21 温州大学新材料与产业技术研究院 Method for manufacturing multi-winding-core battery
KR20230008141A (en) * 2020-05-11 2023-01-13 주하이 코스엠엑스 배터리 컴퍼니 리미티드 batteries and electronics
EP3982441A1 (en) * 2020-10-12 2022-04-13 E-one Moli Energy Corp. Electrode body and cylindrical lithium battery containing the same
CN113381132B (en) * 2021-06-03 2023-03-14 珠海冠宇电池股份有限公司 Multi-tab battery cell and battery

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JP5618010B2 (en) * 2010-12-20 2014-11-05 エルジー・ケム・リミテッド Lithium secondary battery having multidirectional lead-tab structure
CN202050030U (en) * 2011-05-20 2011-11-23 无锡市明杨电池有限公司 Lithium ion battery with high-multiplying-power discharge performance

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Effective date of registration: 20190125

Address after: 365000 Mingxi Economic Development Zone A, Sanming City, Fujian Province

Patentee after: Fujian Zhige New Energy Battery Technology Co., Ltd.

Address before: 523000 Dongguan Zhige Battery Technology Co., Ltd. Sanzhong Road, Qingxi Town, Dongguan City, Guangdong Province

Patentee before: DONGGUAN GENERAL EXPLORING BATTERY TECHNOLOGY CO., LTD.