CN105406107A - Lithium ion battery and preparation method thereof - Google Patents
Lithium ion battery and preparation method thereof Download PDFInfo
- Publication number
- CN105406107A CN105406107A CN201510790523.5A CN201510790523A CN105406107A CN 105406107 A CN105406107 A CN 105406107A CN 201510790523 A CN201510790523 A CN 201510790523A CN 105406107 A CN105406107 A CN 105406107A
- Authority
- CN
- China
- Prior art keywords
- plastic film
- aluminum plastic
- lug
- pole piece
- lithium ion
- 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
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 69
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 69
- 239000002985 plastic film Substances 0.000 claims abstract description 68
- 229920006255 plastic film Polymers 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 239000011149 active material Substances 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 239000012943 hotmelt Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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)
- 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 invention discloses a lithium ion battery and a preparation method thereof. The lithium ion battery comprises a battery cell, tabs and an aluminum plastic film, wherein the battery cell is formed in a way of overlapping and winding a positive plate, a diaphragm and a negative plate; the tabs are welded on the positive plate and the negative plate, the aluminum plastic film packages the battery cell, the side, at the same side with the tabs, of the aluminum plastic film extends out of the battery cell, the extending length of the aluminum plastic film is at leas half of the exposed length of the tabs, and the tabs are pressed and tightly fitted on the aluminum plastic film. According to the invention, when the battery cell is packaged, the side of the aluminum plastic film extends out of the tabs and the tabs and the aluminum plastic film are pressed together so that the tabs are fitted and fixed on the aluminum plastic film after the battery cell is packaged, thereby preventing the tabs from being bent and even fractured during the production or transportation process; and after the tabs are fixed, the situation that the short-circuit scrapping of the battery cell, caused by bending of the tabs, can be avoided.
Description
Technical field
The invention belongs to polymer Li-ion battery manufacturing technology field, particularly relate to a kind of ultrathin lithium ion battery and preparation method thereof.
Background technology
Slimline battery is a business-like class novel battery gradually in recent years.Such battery has the advantages such as thickness is thin, volume is little, lightweight, is used on the equipment of numerous microminiaturization, low-power consumption, as visual financial IC card etc.The gross thickness of slimline battery is generally less than 0.4mm, by the restriction of its thickness and volume, selected lug thickness generally only has about 0.01mm, its tensile strength of so thin lug is very low, if it exposes separately, in battery core production or transportation, lug there will be the risk of breakage, fold, fracture, thus causes battery core to be scrapped; And because the lug spacing of ultra-thin lithium cell is very little, during lug bending, two lugs are easy to contact and cause short circuit, not only reduce production qualification rate, too increase the security risk of battery core.
Summary of the invention
The object of the present invention is to provide a kind ofly ultra-thin lithium cell can be avoided in production, lug fractures the ultra-thin lithium type ion battery causing battery core to be scrapped in transportation.
Another object of the present invention is to the preparation method that a kind of lithium ion battery that lithium ion cell polar ear can be avoided to fracture is provided.
In order to realize above-mentioned first object, the present invention takes following technical solution:
A kind of lithium ion battery, comprising: stacked the battery core reeling and formed by anode pole piece, barrier film and cathode pole piece; Be welded on the lug on pole piece; Encapsulate the aluminum plastic film of described battery core; Described aluminum plastic film extend beyond described battery core with the side of lug homonymy, and the length that aluminum plastic film extends is at least the half of lug protruded length; Described lug pressing is closely attached on described aluminum plastic film.
More specifically, the side of described aluminum plastic film extends beyond the edge of lug.
More specifically, the tangent plane of described aluminum plastic film side is provided with high temperature glue-line or insulating resin layer.
In order to realize above-mentioned second object, the present invention takes following technical solution:
A preparation method for lithium ion battery, comprises the following steps:
Plus plate current-collecting body and negative current collector apply active material respectively and makes anode pole piece and cathode pole piece;
Obtained pole piece is cut by process specification, and the upper lug of welding;
Anode pole piece, barrier film, cathode pole piece are stacked successively, and rubberizing is fixed, winding forms battery core;
Battery core is precuted out the protruded length of lug;
Adopt aluminum plastic film to encapsulate battery core, and make aluminum plastic film extend beyond battery core with the side of lug homonymy, and the length that aluminum plastic film extends is at least the half of lug protruded length;
Lug is pressed on aluminum plastic film, after flattening shaping, completes the preparation of battery.
More specifically, after hot melt double faced adhesive tape or spray high viscosity resins are pasted in the surface relative with aluminum plastic film of described lug, lug is pressed together on aluminum plastic film.
More specifically, the side of described aluminum plastic film exceeds the edge of lug.
More specifically, the tangent plane of the side after aluminum plastic film cuts pastes high-temp glue or spray insulation resin.
From above technical scheme, the aluminum plastic film of outsourcing battery core, when packaging electric core, expands and prolongs lengthening, make it the length exceeding lug by the present invention, and after guaranteeing battery core encapsulation, wherein aluminum plastic film top in side exceeds lug top, and by fixing for lug laminating aluminum plastic film; And then to battery core change into/common process such as sorting makes.Because battery core of the present invention is just fixed on aluminum plastic film by laminating from the rear lug of encapsulation, thus prevent lug in the risk producing or caused by left and right bending in transportation fracture; And after lug is fixed in the present invention, it can be prevented because bending the risk causing battery core short circuit to scrap or have an accident.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention, simple introduction is done below by the accompanying drawing used required in embodiment or description of the prior art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structural representation of another embodiment of the present invention.
Embodiment
In order to allow above and other objects of the present invention, feature and advantage can be more obvious, the embodiment of the present invention cited below particularly, and coordinate appended diagram, be described below in detail.
As shown in Figure 1, lithium ion battery of the present invention comprises and stacks by anode pole piece, barrier film and cathode pole piece the battery core 1 that formed of reeling, and anode pole piece and/or cathode pole piece are welded with lug 2, the employing aluminum plastic film 3 welded encapsulation battery core 1 of lug 2.The side of aluminum plastic film 3 of the present invention extends beyond battery core 1, and the length d that aluminum plastic film 3 extends is more than or equal to 1/2, i.e. d >=h/2 of the protruded length h (namely lug exceeds the length of the part of battery core) of lug 2.Lug 2 pressing is closely attached on the aluminum plastic film 3 that extends out, thus it is over half by the fixing protection of aluminum plastic film that lug is had at least, to solve the breakage problem of lug.
The preparation method of lithium ion battery of the present invention is as follows:
In the side of negative current collector, coating active material makes cathode pole piece, makes anode pole piece at the coating on both sides active material of plus plate current-collecting body; Negative current collector can adopt Copper Foil or lithium sheet, and plus plate current-collecting body can adopt aluminium foil;
Obtained pole piece is cut by process specification, and the upper lug of welding;
Anode pole piece, barrier film, cathode pole piece are stacked successively, and rubberizing is fixed, winding forms battery core;
Battery core is precuted out the protruded length of lug;
Adopt aluminum plastic film to encapsulate battery core, and make aluminum plastic film extend beyond battery core with the side of lug homonymy, and the length that aluminum plastic film extends is at least the half of lug protruded length;
Paste hot melt double faced adhesive tape or spray high viscosity resins on the surface relative with aluminum plastic film of lug, lug is pressed together on aluminum plastic film, after lug being flattened shaping, completes the preparation of battery.
The aluminum plastic film of packaging electric core lengthens by the present invention, make that the side of aluminum plastic film and lug homonymy is overhanging exceeds lug, then the laminating of the exposed parts of lug is fixed on aluminum plastic film extension, utilizes aluminum plastic film to increase the intensity of lug, thus prevent lug from being fractureed.
Further, in order to prevent the short circuit of aluminum plastic film conducting lug, after cutting aluminum plastic film, high-temp glue or spray insulation resin can be pasted for insulation on the tangent plane of its side.
In addition, in order to avoid aluminum plastic film conducting lug is short-circuited, preferably, the edge that exceed lug extensible with the side of lug homonymy of aluminum plastic film, and then lug pressing is closely attached on (Fig. 2) on aluminum plastic film.
Be described in detail with the preparation method of specific embodiment to ultra-thin lithium cell of the present invention below.
Prepared by the present embodiment, battery core is of a size of: length≤25.0mm, width≤35.0mm, thickness≤0.40mm;
Step 1, be coated with the two-sided of plus plate current-collecting body, the one side of anticathode collector is coated with, and technique is carried out toasting, after roll-in, divided be cut to coiled strip by specification requirement width routinely;
Step 2, use laser cleaning technique, washed by the coating in coiled strip lug region, make sky paper tinsel expose with soldering polar ear, cleaning is of a size of 3.0*4.0mm;
Step 3, the mode chip that pole piece punch die is cut, anode pole piece is die-cut is of a size of 26.5*21.0mm, and cathode pole piece is die-cut to be of a size of: 55.0*22.0mm; Pole piece cuts the aluminium/nickel lug of rear welding 0.010*2.0*15.0mm, to the protection of the empty paper tinsel rubberizing in soldering polar ear position paper;
Cathode pole piece and barrier film are folded along center line, it is inside that negative pole is coated with cream, and by diaphragm case on anode pole piece, then outside puts cathode pole piece again, and rubberizing is fixed, and winding forms battery core;
Step 4, align by specification, negative lug cuts, cutting rear lug length is 4.5 ± 0.5mm;
Step 5, use aluminum plastic film packaging electric core, and after guaranteeing battery core encapsulation, a side of aluminum plastic film extends beyond lug top;
Step 6, on the surface that lug is relative with aluminum plastic film, paste hot melt double faced adhesive tape, and lug rubberizing face is pressed together on aluminum plastic film, then make lug be embedded in thermoplastic by the mode of hot pressing, be close to and be fixed on aluminum plastic film, the finished product battery core prepared as shown in Figure 2.
Previous embodiment packaging electric core, cut aluminum plastic film time, specially reserve the aluminum plastic film that a section exceedes lug, thus lug can be close to and be fixed on aluminum plastic film, to increase the intensity of lug, other steps of the inventive method are identical with traditional handicraft.The lug of the battery core adopting the inventive method to prepare, owing to obtaining the support of aluminum plastic film, adds intensity, does not exist by the phenomenon fractureed, and there is not the problem that lug bending short circuit occurs.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the most wide region consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a lithium ion battery, comprising:
The battery core reeling and formed is stacked by anode pole piece, barrier film and cathode pole piece;
Be welded on the lug on pole piece;
Encapsulate the aluminum plastic film of described battery core;
It is characterized in that: described aluminum plastic film extend beyond described battery core with the side of lug homonymy, and the length that aluminum plastic film extends is at least the half of lug protruded length; Described lug pressing is closely attached on described aluminum plastic film.
2. lithium ion battery according to claim 1, is characterized in that: the side of described aluminum plastic film extends beyond the edge of lug.
3. lithium ion battery according to claim 1 and 2, is characterized in that: the tangent plane of described aluminum plastic film side is provided with high temperature glue-line or insulating resin layer.
4. the preparation method of lithium ion battery, is characterized in that, comprises the following steps:
Plus plate current-collecting body and negative current collector apply active material respectively and makes anode pole piece and cathode pole piece;
Obtained pole piece is cut by process specification, and the upper lug of welding;
Anode pole piece, barrier film, cathode pole piece are stacked successively, and rubberizing is fixed, winding forms battery core;
Battery core is precuted out the protruded length of lug;
Adopt aluminum plastic film to encapsulate battery core, and make aluminum plastic film extend beyond battery core with the side of lug homonymy, and the length that aluminum plastic film extends is at least the half of lug protruded length;
Lug is pressed on aluminum plastic film, after flattening shaping, completes the preparation of battery.
5. the preparation method of lithium ion battery according to claim 4, is characterized in that: be pressed together on aluminum plastic film by lug after hot melt double faced adhesive tape or spray high viscosity resins are pasted in the surface relative with aluminum plastic film of described lug.
6. the preparation method of lithium ion battery according to claim 4, is characterized in that: the side of described aluminum plastic film exceeds the edge of lug.
7. the preparation method of the lithium ion battery according to claim 4 or 5 or 6, is characterized in that: the tangent plane of the side after aluminum plastic film cuts pastes high-temp glue or spray insulation resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510790523.5A CN105406107B (en) | 2015-11-16 | 2015-11-16 | A kind of lithium ion battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510790523.5A CN105406107B (en) | 2015-11-16 | 2015-11-16 | A kind of lithium ion battery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105406107A true CN105406107A (en) | 2016-03-16 |
| CN105406107B CN105406107B (en) | 2019-02-05 |
Family
ID=55471464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510790523.5A Active CN105406107B (en) | 2015-11-16 | 2015-11-16 | A kind of lithium ion battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105406107B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659628A (en) * | 2019-01-28 | 2019-04-19 | 新余赣锋电子有限公司 | A kind of the smelting tool and method of soft pack cell edge sealing |
| CN109818066A (en) * | 2017-11-19 | 2019-05-28 | 深圳格林德能源集团有限公司 | A kind of novel power battery preparation method |
| CN111618588A (en) * | 2020-06-01 | 2020-09-04 | 江西优特汽车技术有限公司 | Method for welding tab of soft-packaged battery cell |
| CN114122531A (en) * | 2021-11-29 | 2022-03-01 | 珠海冠宇电池股份有限公司 | Lithium ion battery |
| CN114204220A (en) * | 2020-08-31 | 2022-03-18 | 比亚迪股份有限公司 | Battery cell, battery and battery pack |
| WO2024007723A1 (en) * | 2022-07-07 | 2024-01-11 | 荣耀终端有限公司 | Battery |
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| EP1921694A1 (en) * | 2006-11-08 | 2008-05-14 | Dilo Trading AG | Improved coil-cell type lithium-ion battery with lug fixations or contacts embedded in plastic |
| CN201084764Y (en) * | 2007-07-30 | 2008-07-09 | 比亚迪股份有限公司 | A soft-packed battery |
| CN201754421U (en) * | 2010-03-15 | 2011-03-02 | 陈性保 | Ultra-thin lithium ion polymer battery |
| CN205248389U (en) * | 2015-11-16 | 2016-05-18 | 珠海光宇电池有限公司 | Lithium ion battery |
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2015
- 2015-11-16 CN CN201510790523.5A patent/CN105406107B/en active Active
Patent Citations (4)
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| EP1921694A1 (en) * | 2006-11-08 | 2008-05-14 | Dilo Trading AG | Improved coil-cell type lithium-ion battery with lug fixations or contacts embedded in plastic |
| CN201084764Y (en) * | 2007-07-30 | 2008-07-09 | 比亚迪股份有限公司 | A soft-packed battery |
| CN201754421U (en) * | 2010-03-15 | 2011-03-02 | 陈性保 | Ultra-thin lithium ion polymer battery |
| CN205248389U (en) * | 2015-11-16 | 2016-05-18 | 珠海光宇电池有限公司 | Lithium ion battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818066A (en) * | 2017-11-19 | 2019-05-28 | 深圳格林德能源集团有限公司 | A kind of novel power battery preparation method |
| CN109659628A (en) * | 2019-01-28 | 2019-04-19 | 新余赣锋电子有限公司 | A kind of the smelting tool and method of soft pack cell edge sealing |
| CN111618588A (en) * | 2020-06-01 | 2020-09-04 | 江西优特汽车技术有限公司 | Method for welding tab of soft-packaged battery cell |
| CN114204220A (en) * | 2020-08-31 | 2022-03-18 | 比亚迪股份有限公司 | Battery cell, battery and battery pack |
| CN114204220B (en) * | 2020-08-31 | 2023-04-07 | 比亚迪股份有限公司 | Battery cell, battery and battery pack |
| CN114122531A (en) * | 2021-11-29 | 2022-03-01 | 珠海冠宇电池股份有限公司 | Lithium ion battery |
| WO2024007723A1 (en) * | 2022-07-07 | 2024-01-11 | 荣耀终端有限公司 | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105406107B (en) | 2019-02-05 |
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Address after: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee after: Zhuhai CosMX Battery Co.,Ltd. Address before: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. Address after: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee after: ZHUHAI COSLIGHT BATTERY Co.,Ltd. Address before: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
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