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1.发明授权公开(公告)号：US11932959B2
公开(公告)日：2024-03-19
申请号：US17901101
申请日：2022-09-01
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jia Peng , Mingling Li , Xin Liu , Qisen Huang
Abstract: This application provides a copper plating solution for a composite current collector, including a leveling agent represented by a general formula (1)
where an anion X is F−, Cl−, or Br−;
R1, R2, and R3 are each independently selected from O or S; and
R4, R5, and R6 are each independently selected from hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted vinyl, a substituted or unsubstituted aryl, and a substituted or unsubstituted heteroaryl.-
公开(公告)号：US20230352693A1
公开(公告)日：2023-11-02
申请号：US18325016
申请日：2023-05-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xin Liu , Qisen Huang , Mingling Li , Xianghui Liu , Cheng Li , Jia Peng , Chengdu Liang
CPC classification number: H01M4/667 , H01M50/46 , H01M4/0404 , H01M2004/028
Abstract: A positive electrode current collector and a positive electrode plate, a battery, a battery module, a battery pack, and an apparatus including the positive electrode current collector are provided. In some embodiments, a positive electrode current collector is provided, including an organic support layer and an aluminum-based conductive layer disposed on at least one surface of the organic support layer, where the aluminum-based conductive layer contains Al and at least one modifying element selected from O, N, F, B, S, and P, an XPS spectrogram of the aluminum-based conductive layer with a surface passivation layer removed through etching has at least a first peak falling in a range of 70 eV to 73.5 eV and a second peak falling in a range of 73.5 eV to 78 eV, and a ratio x of peak intensity of the second peak to that of the first peak satisfies 0
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公开(公告)号：US20230083168A1
公开(公告)日：2023-03-16
申请号：US18056248
申请日：2022-11-16
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xin Liu , Qisen Huang , Mingling Li , Xianghui Liu , Cheng Li , Jia Peng , Chengdu Liang
Abstract: A positive electrode current collector and a positive electrode plate, a battery, a battery module, a battery pack, and an apparatus including the positive electrode current collector are provided. In some embodiments, a positive electrode current collector is provided, including an organic support layer and an aluminum-based conductive layer disposed on at least one surface of the organic support layer, where the aluminum-based conductive layer contains Al and at least one modifying element selected from O, N, F, B, S, and P, an XPS spectrogram of the aluminum-based conductive layer with a surface passivation layer removed through etching has at least a first peak falling in a range of 70 eV to 73.5 eV and a second peak falling in a range of 73.5 eV to 78 eV, and a ratio x of peak intensity of the second peak to that of the first peak satisfies 0
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公开(公告)号：US11005105B2
公开(公告)日：2021-05-11
申请号：US16389713
申请日：2019-04-19
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu Liang , Huafeng Huang , Qisen Huang , Xin Liu
Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate and an electrochemical device. The current collector includes an insulation layer; a conductive layer located on at least one surface of the insulation layer; and a first protective layer provided on a surface of the conductive layer facing away from the insulation layer. The first protective layer is made of a metal. The current collector is provided with a plurality of holes penetrating through the insulation layer, the conductive layer and the first protective layer.
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公开(公告)号：US10944112B2
公开(公告)日：2021-03-09
申请号：US16366357
申请日：2019-03-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu Liang , Huafeng Huang , Qisen Huang , Xin Liu
Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a thickness of D2, where 30 nm≤D2≤3 μm. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.
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Patent Agency Ranking
公开(公告)号：US20230361403A1
公开(公告)日：2023-11-09
申请号：US18343758
申请日：2023-06-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Mingling Li , Jia Peng , Xin Liu , Qisen Huang , Cheng Li , Xianghui Liu
IPC: H01M50/209 , G01R31/52 , H01M4/66 , H01M4/62 , H01M50/463
CPC classification number: H01M50/209 , G01R31/52 , H01M4/661 , H01M4/621 , H01M50/463 , H01M2220/20 , H01M2004/028
Abstract: A battery cell, a battery module, a battery pack, and an electrical apparatus are provided. The battery cell includes an intermediate portion and side portions located on two sides of the intermediate portion in a thickness direction, the intermediate portion comprising m battery cell sub-units and the side portions comprising n battery cell sub-units, where m+n is an integer greater than or equal to 3. Each of the battery cell sub-units comprises a positive electrode sheet, a negative electrode sheet and a separator arranged between the positive electrode sheet and the negative electrode sheet, and each of the m battery cell sub-units has a dry battery cell nail penetration short-circuit resistance greater than that of each of the n battery cell sub-units.
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公开(公告)号：US20230282838A1
公开(公告)日：2023-09-07
申请号：US18314158
申请日：2023-05-09
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xin Liu , Qisen Huang , Mingling Li , Xianghui Liu , Jia Peng , Cheng Li , Meng Qin
IPC: H01M4/66
Abstract: A positive current collector, a secondary battery, and an electrical device are provided. In some embodiments, the positive current collector includes: a support layer; and a conductive layer located on at least one surface of the support layer, where the conductive layer includes a first metal portion configured to connect to a tab, where, along a thickness direction of the conductive layer, the first metal portion includes at least three sublayers, and melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer. In the embodiments of this application, the first metal portion includes at least three sublayers, and the melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer, thereby helping increase a bonding force between the conductive layer and the support layer and reducing the probability of peel-off and delamination between the layers.
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公开(公告)号：US11646424B2
公开(公告)日：2023-05-09
申请号：US17123268
申请日：2020-12-16
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin Liu , Qisen Huang , Shiwen Wang , Xianghui Liu , Jia Peng , Mingling Li , Changliang Sheng
IPC: H01M4/66 , H01M4/587 , H01M4/58 , H01M4/62 , H01M10/0525 , H01M10/0569 , H01M10/0567 , H01M4/133 , H01M4/136 , C07C317/12 , H01M4/02
CPC classification number: H01M4/667 , C07C317/12 , H01M4/133 , H01M4/136 , H01M4/587 , H01M4/5825 , H01M4/628 , H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M2004/021 , H01M2300/0037
Abstract: This application discloses a lithium-ion secondary battery. The lithium-ion secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution. The positive electrode plate includes a positive electrode current collector and a positive active material layer disposed on a surface of the positive electrode current collector and containing a positive active material, and the negative electrode plate includes a negative electrode current collector and a negative active material layer disposed on a surface of the negative electrode current collector and containing a negative active material; wherein the positive active material includes lithium iron phosphate, and the negative active material includes graphite; and wherein the positive electrode current collector and/or the negative electrode current collector is a composite current collector, and the composite current collector includes an organic support layer and a conductive layer disposed on at least one surface of the organic support layer.
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公开(公告)号：US20210151751A1
公开(公告)日：2021-05-20
申请号：US17159138
申请日：2021-01-26
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Yingjie GUAN , Yuzhen Zhao , Yan Wen , Qisen Huang , Xin Liu
Abstract: The present application provide a secondary battery and related battery module, battery pack and apparatus. The secondary battery includes a positive electrode plate, a negative electrode plate, a separator and an electrolyte, wherein the secondary battery includes a positive active material selected from one or more of layered lithium nickel cobalt manganese oxide and layered lithium nickel cobalt aluminum oxide, and a negative active material including graphite and silicon-oxygen compound; the delithiation capacity A of the negative electrode film in the voltage range of 0.005V to the delithiation platform voltage and the delithiation capacity B of the negative electrode film in the voltage range of the delithiation platform voltage to 1.2V satisfy: 1A/B2; and when the secondary battery is discharged to a voltage of 2.5V, the voltage U of the negative electrode plate relative to a lithium metal reference electrode satisfies: 0.5VU0.7V.
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公开(公告)号：US20210119219A1
公开(公告)日：2021-04-22
申请号：US17112775
申请日：2020-12-04
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin Liu , Mingling Li , Jia Peng , Qisen Huang , Chengdu Liang
IPC: H01M4/66 , H01M10/0525
Abstract: This application discloses a negative current collector, a negative electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The negative current collector includes a support layer and a metal conductive layer that is disposed on at least one of two opposite surfaces of the support layer in a thickness direction of the support layer. A density of the support layer is less than a density of the metal conductive layer; and the density of the metal conductive layer is 8.0 g/cm3 to 8.96 g/cm3. A thickness D1 of the metal conductive layer is 300 nm≤D1≤2 μm. When a tensile strain of the negative current collector is 2.5%, a sheet resistance growth rate T of the metal conductive layer is T≤5%.
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