CN112186130A - Bipolar composite electrode plate and preparation method thereof - Google Patents

Bipolar composite electrode plate and preparation method thereof Download PDF

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Publication number
CN112186130A
CN112186130A CN202010862570.7A CN202010862570A CN112186130A CN 112186130 A CN112186130 A CN 112186130A CN 202010862570 A CN202010862570 A CN 202010862570A CN 112186130 A CN112186130 A CN 112186130A
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China
Prior art keywords
current collector
positive
negative
material layer
electrode
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CN202010862570.7A
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Chinese (zh)
Inventor
牛亚如
任明秀
许涛
王晓燕
王磊
曹勇
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Hefei Gotion High Tech Power Energy Co Ltd
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Hefei Guoxuan High Tech Power Energy Co Ltd
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Priority to CN202010862570.7A priority Critical patent/CN112186130A/en
Publication of CN112186130A publication Critical patent/CN112186130A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/043—Processes of manufacture in general involving compressing or compaction
    • H01M4/0435—Rolling or calendering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/029—Bipolar electrodes
    • 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

Abstract

The invention discloses a bipolar composite electrode plate and a preparation method thereof, and relates to the technical field of lithium ion batteries. According to the invention, the positive electrode and the negative electrode are respectively and independently manufactured, and then the positive electrode and the negative electrode are compounded in a bonding and welding manner to manufacture the bipolar composite electrode plate, so that the mutual influence between the positive electrode and the negative electrode in the rolling preparation process is effectively avoided, and meanwhile, the peripheral edges are connected in a welding manner, so that the electronic conduction is realized, and the battery performance is ensured.

Description

Bipolar composite electrode plate and preparation method thereof
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a bipolar composite electrode plate and a preparation method thereof.
Background
The bottleneck of the battery technology is one of the important reasons for restricting the development of new energy automobiles, and how to make a breakthrough in the battery technology is a major challenge to improve the endurance mileage of electric automobiles. In order to ensure the driving capability of the electric vehicle and ensure the large output power of the battery, a plurality of battery cells need to be connected in series. The external series connection of the battery cells can cause overlarge impedance and further reduce the output capacity of current, and in addition, the external connection can occupy the space of the battery, increase the weight of a battery stack and reduce the energy density and the power density of the battery.
One of the solutions is to use a bipolar electrode, i.e. coating a positive active material on one side of a current collector and a negative active material on the other side of the current collector, and realizing the internal series connection of the battery through the assembly of pole pieces. The bipolar battery is connected in series in the battery, so that the internal resistance of the battery can be reduced, the packaging weight and volume can be reduced, and the specific energy and power density can be improved. According to the characteristics of the bipolar battery, the active substances coated on the two sides of the current collector are respectively a positive active substance and a negative active substance, and the compaction of the positive material is far higher than that of the negative material, so that after the coating of the bipolar pole piece is finished, when the active substance on one side is rolled, the active substance on the other side can be influenced, and the performance of the battery is influenced.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a bipolar composite electrode plate and a preparation method thereof.
The invention provides a bipolar composite electrode plate which comprises a positive current collector with one side coated with a positive material layer and a negative current collector with one side coated with a negative material layer, wherein the other side of the positive current collector and the central area of the other side of the negative current collector are connected through a bonding layer, the positive current collector and the negative current collector are stacked, and at least one side of the peripheral edge of the positive current collector and at least one side of the negative current collector are connected through welding, so that electronic conduction is realized.
In the invention, the positive current collector and the negative current collector are laminated, at least one side of the peripheral edge is connected by welding, and the other unconnected parts can be hermetically connected by sealant.
Preferably, the positive electrode current collector and the negative electrode current collector both adopt metal foils, and the thickness of the foils is 6-30 μm.
Preferably, the raw material of the bonding layer is a binder, and is one or more of polyvinylidene fluoride, polyvinyl chloride, polymethyl methacrylate, polyacrylonitrile and styrene butadiene rubber.
Preferably, the width of the peripheral edge welding area is 0.5-5 cm.
Preferably, the welding method uses ultrasonic welding or laser welding.
Preferably, the thickness of the adhesive layer is 1 to 10 μm.
The invention also provides a preparation method of the bipolar composite electrode plate, which comprises the following steps:
s1, coating the positive electrode slurry on one side of a positive electrode current collector, coating the negative electrode slurry on one side of a negative electrode current collector, and respectively preparing sheets to obtain the positive electrode current collector with one side coated with a positive electrode material layer and the negative electrode current collector with one side coated with a negative electrode material layer;
s2, dissolving the binder in the solvent to obtain a binder solution;
s3, coating a binding solution on the other side of the positive current collector corresponding to the positive material layer or/and the other side of the negative current collector corresponding to the negative material layer, and laminating and hot-pressing to obtain a composite pole piece;
and S4, connecting at least one side of the peripheral edge of the composite pole piece by welding to realize electronic conduction.
Has the advantages that: the bipolar composite electrode plate is prepared by separately preparing the positive electrode and the negative electrode, and then compounding the positive electrode plate and the negative electrode plate in a bonding and welding manner. Compared with the prior art that the positive and negative active materials are coated on the same current collector and respectively compacted, the compaction degree of the positive and negative materials cannot be effectively and accurately controlled, the positive and negative materials are respectively rolled and then compounded, the mutual influence between the positive and negative electrodes in the rolling preparation process is effectively avoided, meanwhile, the peripheral edges are connected in a welding mode, the electronic conduction is realized, and the battery performance is ensured.
Drawings
Fig. 1 is a schematic structural view of a bipolar composite electrode sheet according to an embodiment of the invention; in the figure, 1-positive current collector, 2-negative current collector, 3-positive material layer, 4-negative material layer, 5-bonding layer, 6-welding area;
FIG. 2 is a schematic diagram of a bipolar lithium ion battery stack according to an embodiment of the present invention; among them, 7-diaphragm.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Examples
Fig. 1 is a schematic structural diagram of a bipolar composite electrode plate, which includes a positive current collector 1 and a negative current collector 2; the central area of one side of the positive current collector 1 is coated with a positive material layer 3, and the central area of one side of the negative current collector 2 is coated with a negative material layer 4; the other side of the positive electrode current collector 1 and the central region of the other side of the negative electrode current collector 2 are connected by a bonding layer 5. The positive current collector and the negative current collector are stacked, and at least one side of a 0.5-5cm white margin edge on the periphery of the positive current collector and the negative current collector is connected in an ultrasonic welding or laser welding mode to form a welding area 6, so that electronic conduction is realized.
Wherein, the positive current collector 1 and the negative current collector 2 can respectively select an aluminum foil and a copper foil, the thickness of the foil is 6-30 μm, and the thickness of the bonding layer is 1-10 μm. The method for forming the positive electrode material layer 3, the negative electrode material layer 4, and the adhesive layer 5 may be coating, thermal spraying, screen printing, or the like. The active material in the positive electrode material layer 3 may be any one of lithium iron phosphate, an NCM material, an NCA material, and the like, as required; the active material in the negative electrode material layer 4 can be one of materials such as graphite, silicon carbon, lithium titanate and lithium metal; the adhesive layer 5 is one or a mixture of polyvinylidene fluoride, polyvinyl chloride, polymethyl methacrylate, polyacrylonitrile, styrene butadiene rubber and various synthetic adhesive materials.
The preparation method of the bipolar composite electrode plate comprises the following steps:
(1) coating the positive electrode slurry on one side of a positive electrode current collector 1, coating the negative electrode slurry on one side of a negative electrode current collector 2, and then respectively rolling and tabletting the positive and negative pole pieces under different pressures to obtain the positive electrode current collector 1 coated with a positive electrode material layer 3 and the negative electrode current collector 2 coated with a negative electrode material layer 4;
(2) dissolving a binder in a solvent to obtain a binder solution;
(3) coating adhesive liquid on the other side of the positive current collector 1 corresponding to the positive material layer 3 or/and the other side of the negative current collector 2 corresponding to the negative material layer 4, laminating and hot-pressing, solidifying the adhesive liquid to form an adhesive layer 5, and bonding and compounding the sides of the positive and negative plates which are not coated with active substances to obtain a composite plate;
(4) at least one side of the peripheral edge of the composite pole piece is connected through welding to form a welding area 6, so that electronic conduction can be achieved.
The schematic diagram of the lithium ion battery lamination structure of the bipolar lithium ion battery prepared by the bipolar composite electrode plate is shown in fig. 2. The bipolar lithium ion battery is formed by stacking the anode, the diaphragm 7 and the cathode in sequence, then injecting and sealing a battery cell, and finally packaging a series battery cell by adopting an aluminum plastic film. In addition, the bipolar composite electrode plate can also be used for manufacturing a solid lithium ion battery, a solid electrolyte is adopted to replace a liquid electrolyte, and the solid lithium ion battery is manufactured by stacking the positive electrode, the solid electrolyte and the negative electrode in sequence.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (7)

1. The bipolar composite electrode plate is characterized by comprising a positive current collector with one side coated with a positive electrode material layer and a negative current collector with one side coated with a negative electrode material layer, wherein the central areas of the other side of the positive current collector and the other side of the negative current collector are connected through bonding layers, and the positive current collector and the negative current collector are stacked and are connected with at least one side of the peripheral edge through welding, so that electronic conduction is realized.
2. The bipolar composite electrode sheet according to claim 1, wherein the positive electrode current collector and the negative electrode current collector are both made of metal foil, and the thickness of the foil is 6-30 μm.
3. The bipolar composite electrode sheet according to claim 1 or 2, wherein the raw material of the bonding layer is a binder, and is one or more of polyvinylidene fluoride, polyvinyl chloride, polymethyl methacrylate, polyacrylonitrile, and styrene butadiene rubber.
4. The bipolar composite electrode sheet according to any one of claims 1 to 3, wherein the width of the peripheral edge weld region is 0.5-5 cm.
5. The bipolar composite electrode sheet according to any one of claims 1 to 4, wherein the welding method is ultrasonic welding or laser welding.
6. The bipolar composite electrode sheet according to any one of claims 1 to 5, wherein the adhesive layer has a thickness of 1 to 10 μm.
7. The preparation method of the bipolar composite electrode sheet based on any one of claims 1 to 6 is characterized by comprising the following steps of:
s1, coating the positive electrode slurry on one side of a positive electrode current collector, coating the negative electrode slurry on one side of a negative electrode current collector, and respectively preparing sheets to obtain the positive electrode current collector with one side coated with a positive electrode material layer and the negative electrode current collector with one side coated with a negative electrode material layer;
s2, dissolving the binder in the solvent to obtain a binder solution;
s3, coating a binding solution on the other side of the positive current collector corresponding to the positive material layer or/and the other side of the negative current collector corresponding to the negative material layer, and laminating and hot-pressing to obtain a composite pole piece;
and S4, connecting at least one side of the peripheral edge of the composite pole piece by welding to realize electronic conduction.
CN202010862570.7A 2020-08-25 2020-08-25 Bipolar composite electrode plate and preparation method thereof Pending CN112186130A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113871626A (en) * 2021-09-06 2021-12-31 苏州领湃新能源科技有限公司 Bipolar current collector of secondary battery and manufacturing process thereof
WO2023173585A1 (en) * 2022-03-18 2023-09-21 江阴纳力新材料科技有限公司 Ultrasonic welding method for tab

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103004009A (en) * 2010-07-28 2013-03-27 日产自动车株式会社 Bipolar electrode, bipolar secondary battery using same, and method for producing bipolar electrode
CN103069614A (en) * 2010-06-16 2013-04-24 法国原子能及替代能源委员会 Current collector having built-in sealing means, and bipolar battery including such a collector
CN103219521A (en) * 2012-01-20 2013-07-24 北京好风光储能技术有限公司 Bipolarity current collector and preparation method
CN103700807A (en) * 2013-11-29 2014-04-02 徐敖奎 High-voltage lithium ion battery and preparation method thereof
CN104409762A (en) * 2013-08-22 2015-03-11 石洪涛 Battery composite substrate, battery composite electrode, laminated battery and laminated battery system
CN107204486A (en) * 2016-03-17 2017-09-26 株式会社东芝 Nonaqueous electrolyte battery, nonaqueous electrolyte battery group and vehicle
CN109494377A (en) * 2018-11-13 2019-03-19 中南大学 A kind of integration bipolar electrode and preparation method thereof, application
CN109768334A (en) * 2018-12-25 2019-05-17 中国电子科技集团公司第十八研究所 Preparation method of bipolar solid-state lithium secondary battery
KR102100445B1 (en) * 2018-10-18 2020-04-13 한국생산기술연구원 Bipolar laminated structure using interfacial adhesive between current collectors, all solid lithium secondary battery comprising the same, and method for preparing the same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103069614A (en) * 2010-06-16 2013-04-24 法国原子能及替代能源委员会 Current collector having built-in sealing means, and bipolar battery including such a collector
CN103004009A (en) * 2010-07-28 2013-03-27 日产自动车株式会社 Bipolar electrode, bipolar secondary battery using same, and method for producing bipolar electrode
CN103219521A (en) * 2012-01-20 2013-07-24 北京好风光储能技术有限公司 Bipolarity current collector and preparation method
CN104409762A (en) * 2013-08-22 2015-03-11 石洪涛 Battery composite substrate, battery composite electrode, laminated battery and laminated battery system
CN103700807A (en) * 2013-11-29 2014-04-02 徐敖奎 High-voltage lithium ion battery and preparation method thereof
CN107204486A (en) * 2016-03-17 2017-09-26 株式会社东芝 Nonaqueous electrolyte battery, nonaqueous electrolyte battery group and vehicle
KR102100445B1 (en) * 2018-10-18 2020-04-13 한국생산기술연구원 Bipolar laminated structure using interfacial adhesive between current collectors, all solid lithium secondary battery comprising the same, and method for preparing the same
CN109494377A (en) * 2018-11-13 2019-03-19 中南大学 A kind of integration bipolar electrode and preparation method thereof, application
CN109768334A (en) * 2018-12-25 2019-05-17 中国电子科技集团公司第十八研究所 Preparation method of bipolar solid-state lithium secondary battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113871626A (en) * 2021-09-06 2021-12-31 苏州领湃新能源科技有限公司 Bipolar current collector of secondary battery and manufacturing process thereof
CN113871626B (en) * 2021-09-06 2023-03-14 湖南领湃达志科技股份有限公司 Bipolar current collector of secondary battery and manufacturing process thereof
WO2023173585A1 (en) * 2022-03-18 2023-09-21 江阴纳力新材料科技有限公司 Ultrasonic welding method for tab

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Application publication date: 20210105