CN210805921U - Current collector foil and pole piece - Google Patents
Current collector foil and pole piece Download PDFInfo
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- CN210805921U CN210805921U CN201921367735.2U CN201921367735U CN210805921U CN 210805921 U CN210805921 U CN 210805921U CN 201921367735 U CN201921367735 U CN 201921367735U CN 210805921 U CN210805921 U CN 210805921U
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- foil
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- collector foil
- conductive layer
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- 239000011888 foil Substances 0.000 title claims abstract description 95
- 230000001788 irregular Effects 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims 4
- 238000001704 evaporation Methods 0.000 claims 4
- 239000010409 thin film Substances 0.000 claims 3
- 239000011149 active material Substances 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000004381 surface treatment Methods 0.000 abstract description 5
- 239000013543 active substance Substances 0.000 description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 22
- 229910052782 aluminium Inorganic materials 0.000 description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 239000000853 adhesive Substances 0.000 description 14
- 230000001070 adhesive effect Effects 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 230000003746 surface roughness Effects 0.000 description 9
- -1 polytetrafluoroethylene Polymers 0.000 description 8
- 239000002002 slurry Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000002134 carbon nanofiber Substances 0.000 description 6
- 229910021389 graphene Inorganic materials 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000007756 gravure coating Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000003273 ketjen black Substances 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 102000004310 Ion Channels Human genes 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
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- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model belongs to the technical field of battery production manufacturing, concretely relates to mass flow body foil and pole piece, be in including foil body (1) and setting conducting layer (2) on foil body (1) surface, conducting layer (2) interval is provided with a plurality of through-hole (21), the roughness on conducting layer (2) surface is 100 mu m-200 mu m. The utility model discloses carry out surface treatment to the battery foil, reduce the contact resistance between active material and the mass flow body foil to through setting up the through-hole, improve the adhesion force between active material and the mass flow body foil, and then improve the wholeness ability of battery.
Description
Technical Field
The utility model belongs to the technical field of battery production manufacturing, concretely relates to mass flow body foil and pole piece.
Background
The high-power use environment of the power battery needs the battery to have better electronic conduction performance and ion conduction performance, and needs more electronic channels and ion channels. The active substance is mainly adhered to the aluminum foil through high polymer glue such as polytetrafluoroethylene, styrene butadiene rubber and the like, and too high polymer glue content brings higher impedance to influence the conductivity of the aluminum foil. Wherein, the aluminum foil is rolled by an aluminum ingot by adopting a cold rolling process, and after the surface is decontaminated and de-oxidized, the surface of the aluminum foil microscopically shows the defects of scratches, through holes, pits and the like generated in the rolling process.
Among them, chinese patent literature discloses a positive electrode sheet for reducing the direct current internal resistance of a battery and a method for preparing the same (publication No. CN 104319364 a), including: the positive plate is composed of an aluminum foil, a single graphene coating and a carbon nanofiber slurry-containing coating, wherein the single graphene coating and the carbon nanofiber slurry-containing coating are alternately arranged on any one surface or two surfaces of the aluminum foil, the single graphene coating is formed by coating single graphene slurry, the carbon nanofiber slurry-containing coating is formed by coating carbon nanofiber slurry, and the carbon nanofiber slurry is slurry formed by active substances, a binder, a solvent and carbon nanofibers. The above solution shortens the lithium ion diffusion path to some extent, but it has at least the following drawbacks: firstly, salient points are arranged on the surface of the aluminum foil, so that the conductivity consistency of the battery is influenced, and the resistance of a pole piece is higher; second, the adhesion between the active material and the current collector foil is low, affecting the performance of the battery.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model lies in: to prior art's not enough, provide a mass flow body foil, carry out surface treatment to the battery foil, reduce the contact resistance between active material and the mass flow body foil to through setting up the through-hole, improve the adhesion stress between active material and the mass flow body foil, and then improve the wholeness ability of battery.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a current collector foil comprises a foil body and a conductive layer arranged on the surface of the foil body, wherein a plurality of through holes are formed in the conductive layer at intervals, and the roughness of the surface of the conductive layer is 100-200 mu m.
As an improvement of a mass flow body foil, the tip intercommunication of through-hole the foil body.
As an improvement of the current collector foil, a plurality of the arrangement mode of the through holes is regular or irregular.
As an improvement of the current collector foil, the shape of the through hole is circular, oval or polygonal.
As an improvement of a mass flow body foil, the through-hole is circular, the diameter of through-hole is 0.1um ~10 um.
As an improvement of a mass flow body foil, the area of through-hole is 0.1um2～150um2。
As an improvement of a mass flow body foil, the thickness of conducting layer is 0.2um ~2 um.
As an improvement of the current collector foil, the coating density of the conductive layer is 0.1g/m3～2g/m3。
As an improvement of a mass flow body foil, the conducting layer includes conducting solution and adhesive, the conducting solution is acetylene black, Super P, carbon fiber, carbon nanotube, graphite alkene, slice conductive carbon, Super conductive carbon or ketjen black, the adhesive is polyvinyl alcohol, polytetrafluoroethylene, sodium carboxymethylcellulose, polyolefin, fluorinated rubber or polyurethane.
A second object of the present invention is to provide a pole piece, including the above-mentioned current collector foil.
It should be noted that: the surface of the aluminum foil is cleaned, impurities such as oil stains and an oxidation layer on the surface of the aluminum foil are removed, then micro-gravure coating is adopted, a conductive liquid is coated on the surface of the foil body to form a conductive layer, and meanwhile, the shape of the through hole is changed by changing the micro-gravure roller, so that the surface roughness of the conductive layer is improved, active substances are better embedded in the conductive layer, and the binding force between the active substances and the current collector foil is improved.
The beneficial effects of the utility model reside in that, the utility model discloses a foil body and setting are in the conducting layer on foil body surface, the conducting layer interval is provided with a plurality of through-hole, the roughness on conducting layer surface is 100 mu m-200 mu m. The active substance is mainly adhered to the aluminum foil through the polymer adhesive, and the excessively high polymer adhesive content brings higher impedance to influence the conductivity of the aluminum foil, so that the plurality of through holes are formed in the conductive layer at intervals, the surface roughness of the conductive layer is increased, the contact between the active substance and the conductive layer is increased, the active substance is embedded in the conductive layer, the use amount of the adhesive can be reduced, the contact resistance between the active substance and the current collector foil is reduced, the battery capacity is improved, and the overall performance of the battery is improved; the surface of the aluminum foil is cleaned, impurities such as oil stains and an oxidation layer on the surface of the aluminum foil are removed, then micro-gravure coating is adopted, a conductive liquid is coated on the surface of the foil body to form a conductive layer, and meanwhile, the shape of the through hole is changed by changing the micro-gravure roller, so that the surface roughness of the conductive layer is improved, active substances are better embedded in the conductive layer, and the binding force between the active substances and the current collector foil is improved. The utility model discloses carry out surface treatment to the battery foil, reduce the contact resistance between active material and the mass flow body foil to through setting up the through-hole, improve the adhesion force between active material and the mass flow body foil, and then improve the wholeness ability of battery.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein: 1-a foil body; 2-a conductive layer; 21-through hole.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
Example 1
As shown in fig. 1, a current collector foil comprises a foil body 1 and a conductive layer 2 disposed on the surface of the foil body 1, wherein the conductive layer 2 is provided with a plurality of through holes 21 at intervals, and the roughness of the surface of the conductive layer 2 is 100 μm-200 μm. Because the active substance is mainly adhered to the aluminum foil through the polymer adhesive, and the excessively high polymer adhesive content brings higher impedance to influence the conductivity of the aluminum foil, the plurality of through holes 21 are arranged at intervals on the conductive layer 2 to increase the surface roughness of the conductive layer 2, so that the contact between the active substance and the conductive layer 2 is increased, the active substance is embedded in the conductive layer 2, the use amount of the adhesive can be reduced, the contact resistance between the active substance and the current collector foil is reduced, the battery capacity is improved, and the overall performance of the battery is improved; the surface of the aluminum foil is cleaned, impurities such as oil stains and an oxidation layer on the surface of the aluminum foil are removed, then micro-gravure coating is adopted, a conductive liquid is coated on the surface of the foil body 1 to form a conductive layer 2, and meanwhile, the shape of the through hole 21 is changed by changing the micro-gravure roller, so that the surface roughness of the conductive layer 2 is improved, active substances are better embedded in the conductive layer 2, and the binding force between the active substances and the current collector foil is improved.
Preferably, the ends of the through holes 21 communicate with the foil body 1. The tip intercommunication foil body 1 of through-hole 21 for active material directly inlays in conducting layer 2, reduces the contact resistance between active material and the mass flow body foil simultaneously, improves static electric conductive property, and the micro-current between the more effectual active material of collection reduces the contact resistance between active material and the mass flow body foil.
Preferably, the arrangement of the plurality of through holes 21 is regular or irregular. The plurality of through holes 21 may be arranged regularly or irregularly according to actual production requirements.
Preferably, the shape of the through-hole 21 is circular, oval or polygonal. According to the requirement of production cost, the shape of the through holes 21 can be set to be circular, oval or polygonal, wherein the polygon is triangular, quadrilateral or hexagonal, and the shape and the size of each through hole 21 can be the same; the shapes may be different and the sizes may be different.
Preferably, the through hole 21 is circular, and the diameter of the through hole 21 is 0.1 um-10 um. Through-hole 21 is circular, prescribes a limit to the diameter of through-hole 21, prevents that through-hole 21 undersize, has improved the degree of difficulty of production, prevents that through-hole 21 is too big simultaneously, influences the adhesion force between active material and the current collector foil.
Preferably, the thickness of the conductive layer 2 is 0.2um to 2 um. The thickness of the conducting layer 2 is limited, so that the conducting layer 2 is prevented from being too thin, active substances cannot be effectively embedded in the conducting layer 2, and the adhesive force between the active substances and a current collector foil is influenced; while preventing the conductive layer 2 from being excessively thick, resulting in an increase in the production cost of the battery.
Preferably, the area of the through-hole 21 is 0.1um2～150um2. The area of injecing through-hole 21 prevents that the area undersize of through-hole 21 from leading to the production degree of difficulty increase, prevents simultaneously that the area of through-hole 21 is too big, influences 2 roughness on conducting layer, is unfavorable for improving the adhesion force between active material and the mass collector foil.
Preferably, the conductive layer 2 has a coating density of 0.1g/m3～2g/m3. The coating density of the conducting layer 2 is limited, the conducting layer 2 is prevented from being too small, active substances cannot be effectively embedded in the conducting layer 2, the adhesive force between the active substances and a current collector foil is influenced, and meanwhile, the conducting layer 2 is prevented from being too large in coating density, so that the production cost of the battery is increased.
Preferably, the conductive layer 2 includes a conductive liquid and an adhesive, the conductive liquid is acetylene black, Super P, carbon fiber, carbon nanotube, graphene, flake conductive carbon, Super conductive carbon or ketjen black, and the adhesive is polyvinyl alcohol, polytetrafluoroethylene, sodium carboxymethyl cellulose, polyolefin, fluorinated rubber or polyurethane. The conductive liquid can contain at least two of acetylene black, Super P, carbon fiber, carbon nano tube, graphene, flaky conductive carbon, Super conductive carbon and Ketjen black, the binder can contain at least one of polyvinyl alcohol, polytetrafluoroethylene, sodium carboxymethyl cellulose, polyolefins, fluorinated rubber and polyurethane, and the components are as follows by mass percent: 5-95% of conductive liquid, 95-5% of binder and the balance of solvent water or N-methyl pyrrolidone, wherein the addition amount of the solvent can be adjusted according to actual operation.
The utility model discloses a theory of operation is:
the plurality of through holes 21 are formed in the conducting layer 2 at intervals, so that the surface roughness of the conducting layer 2 is increased, the contact between the active material and the conducting layer 2 is increased, the active material is embedded in the conducting layer 2, the using amount of the adhesive can be reduced, the contact resistance between the active material and the current collector foil is reduced, the battery capacity is improved, and the overall performance of the battery is improved; the surface of the aluminum foil is cleaned, impurities such as oil stains and an oxidation layer on the surface of the aluminum foil are removed, then micro-gravure coating is adopted, a conductive liquid is coated on the surface of the foil body 1 to form a conductive layer 2, and meanwhile, the shape of the through hole 21 is changed by changing the micro-gravure roller, so that the surface roughness of the conductive layer 2 is improved, active substances are better embedded in the conductive layer 2, and the binding force between the active substances and the current collector foil is improved.
Example 2
This embodiment provides a pole piece comprising the current collector foil of embodiment 1.
It should be noted that: the surface of the aluminum foil is cleaned, impurities such as oil stains and an oxidation layer on the surface of the aluminum foil are removed, then micro-gravure coating is adopted, a conductive liquid is coated on the surface of the foil body 1 to form a conductive layer 2, and meanwhile, the shape of the through hole 21 is changed by changing the micro-gravure roller, so that the surface roughness of the conductive layer 2 is improved, active substances are better embedded in the conductive layer 2, and the binding force between the active substances and the current collector foil is improved.
Comparative example 1
Unlike embodiment 2, the conductive layer 2 on the surface of the foil body 1 does not have the through-hole 21. The rest is the same as embodiment 2, and the description is omitted here.
The pole pieces obtained in example 2 and comparative example 1 were subjected to performance tests, and the experimental results are shown in table 1.
TABLE 1
| Average of 200 peel force tests | |
| Example 2 | 6.89N/m |
| Comparative example 1 | 3.66N/m |
As can be seen from example 2 and comparative example 1, the peeling force of the current collector foil subjected to surface treatment to form the plurality of through holes 21 is higher by more than 50% than that of a pole piece of the current collector foil which is not subjected to surface treatment under the same condition. This is because set up a plurality of through-hole 21 at the conducting layer 2 interval, increase conducting layer 2 surface roughness to increase the contact of active material and conducting layer 2, make active material inlay in conducting layer 2, reducible adhesive's use amount, reduce the contact resistance between active material and the mass flow body foil, help improving battery capacity, and then improve the wholeness ability of battery.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (9)
1. A current collector foil, comprising: the conductive layer (2) is arranged on the surface of the foil body (1) and comprises a foil body (1), a plurality of through holes (21) are arranged on the conductive layer (2) at intervals, and the roughness of the surface of the conductive layer (2) is 100 mu m-200 mu m.
2. A current collector foil as claimed in claim 1, wherein: the end part of the through hole (21) is communicated with the foil body (1).
3. A current collector foil as claimed in claim 1, wherein: the arrangement mode of the through holes (21) is regular or irregular.
4. A current collector foil as claimed in claim 1, wherein: the shape of the through hole (21) is circular, oval or polygonal.
5. A current collector foil as claimed in claim 1, wherein: through-hole (21) are circular, the diameter of through-hole (21) is 0.1um ~10 um.
6. A current collector foil as claimed in claim 1, wherein: area of through-hole (21) is 0.1um ~150um has been transferred.
7. A current collector foil as claimed in claim 1, wherein: the thickness of conducting layer (2) is 0.2um ~2 um.
8. A current collector foil as claimed in claim 1, wherein: carrying out thin film evaporation on the conducting layer (2) according to thin film evaporation and high speed evaporation to obtain a thin film evaporation layer.
9. A pole piece, characterized by: a current collector foil as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367735.2U CN210805921U (en) | 2019-08-22 | 2019-08-22 | Current collector foil and pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367735.2U CN210805921U (en) | 2019-08-22 | 2019-08-22 | Current collector foil and pole piece |
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| Publication Number | Publication Date |
|---|---|
| CN210805921U true CN210805921U (en) | 2020-06-19 |
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|---|---|---|---|
| CN201921367735.2U Active CN210805921U (en) | 2019-08-22 | 2019-08-22 | Current collector foil and pole piece |
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| CN (1) | CN210805921U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113066958A (en) * | 2021-03-22 | 2021-07-02 | 珠海冠宇电池股份有限公司 | Current collector and application thereof |
| WO2023019741A1 (en) * | 2021-08-19 | 2023-02-23 | 深圳市西盟特电子有限公司 | Current collector preparation method and pole piece |
| WO2023142430A1 (en) * | 2022-01-28 | 2023-08-03 | 厦门海辰储能科技股份有限公司 | Composite current collector, method for preparing composite current collector, electrode plate, battery, and electric device |
-
2019
- 2019-08-22 CN CN201921367735.2U patent/CN210805921U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113066958A (en) * | 2021-03-22 | 2021-07-02 | 珠海冠宇电池股份有限公司 | Current collector and application thereof |
| WO2023019741A1 (en) * | 2021-08-19 | 2023-02-23 | 深圳市西盟特电子有限公司 | Current collector preparation method and pole piece |
| WO2023142430A1 (en) * | 2022-01-28 | 2023-08-03 | 厦门海辰储能科技股份有限公司 | Composite current collector, method for preparing composite current collector, electrode plate, battery, and electric device |
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Effective date of registration: 20220126 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zenergy Battery Technologies Co.,ltd Address before: 523000 Dalang Town, Dongguan, Guangdong province Xiangshan Pine Hill Village Xiangshan Industrial Park Jiayuan Road No. 9 Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |
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Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Country or region after: China Address before: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |