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公开(公告)号：US12100843B2
公开(公告)日：2024-09-24
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 , H01M4/0404 , H01M50/46 , 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：US20220085384A1
公开(公告)日：2022-03-17
申请号：US17537520
申请日：2021-11-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin LIU , Shiwen Wang , Qisen Huang , Cheng Li , Mingling Li , Jia Peng , Xianghui Liu
IPC: H01M4/66
Abstract: The present application discloses a composite current collector, an electrode plate and an electrochemical device. The composite current collector includes an organic support layer and a metal conductive layer disposed on at least one surface of the organic support layer; and the composite current collector has a brittleness parameter C of 0.01≤C≤0.5. The composite current collector provided by the present application has relatively high mechanics and mechanical properties which having good electrical conductivity and current collection performance, which can improve preparation yield of the composite current collector, the electrode plate and the electrochemical device and their reliability during use, and enables the electrochemical device to have relatively high electrochemical performance and gravimetric energy density.
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公开(公告)号：US11791472B2
公开(公告)日：2023-10-17
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：US11784312B1
公开(公告)日：2023-10-10
申请号：US17963140
申请日：2022-10-10
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Mingling Li , Jia Peng , Xin Liu , Cheng Li , Xianghui Liu , Qisen Huang
Abstract: This application provides a current collector and a preparation method thereof, a secondary battery containing such current collector, a battery module, a battery pack, and an electric apparatus. The current collector in this application includes a support layer, a binder layer, and a metal layer, where the binder layer is arranged between the support layer and the metal layer, the binder layer includes an organic binder and inorganic particles, a thickness D0 of the binder layer is 1.0-5.0 μm, optionally 1.0-3.0 μm; and the inorganic particles include large particles with a median particle size D50large and small particles with a median particle size D50small, and the median particle sizes of the large particles and the small particles satisfy the following relationships: D50large>D50small; D50large=(0.5-0.9)×D0; and D50small=(0.1-0.4)×D0.
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公开(公告)号：US11611081B2
公开(公告)日：2023-03-21
申请号：US17128090
申请日：2020-12-19
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin Liu , Qisen Huang , Shiwen Wang , Xianghui Liu , Jia Peng , Mingling Li , Changliang Sheng
IPC: H01M4/66 , H01M4/04 , H01M10/0525 , H01M4/02
Abstract: The present disclosure provides a lithium ion secondary battery, a battery core, a negative electrode plate and an apparatus containing the lithium ion secondary battery. The lithium ion secondary battery includes a battery core and an electrolytic solution, the battery core including a positive electrode plate comprising a positive current collector and a positive active material layer, a separator, and a negative electrode plate comprising a negative current collector and a negative active material layer, wherein the positive current collector and/or the negative current collector are a composite current collector, the composite current collector comprises a polymer-based support layer and a conductive layer disposed on at least one surface of the support layer, and the composite current collector has a thermal conductivity in a range of 0.01 W/(m·K) to 10 W/(m·K), preferably in a range of 0.1 W/(m·K) to 2 W/(m·K).
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Patent Agency Ranking
6.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：US20220085383A1
公开(公告)日：2022-03-17
申请号：US17535690
申请日：2021-11-26
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin LIU , Shiwen Wang , Qisen Huang , Cheng Li , Mingling Li , Jia Peng , Xianghui Liu
IPC: H01M4/66
Abstract: The present application discloses a negative electrode current collector, a negative electrode plate, an electrochemical device, and an apparatus. The negative electrode current collector includes a polymer material-based support layer and a copper-based conductive layer disposed on at least one surface of the support layer; wherein a thickness D1 of the copper-based conductive layer, a tensile strength T of the support layer, and a thickness D2 of the support layer satisfy a relational formula 0.01≤(300×D1)/(T×D2)≤0.5. The negative electrode current collector has relatively high mechanics and mechanical properties, good electrical conductivity and current collection performance and low weight, which can improve preparation yield of the negative electrode current collector, the negative electrode plate and the electrochemical device and their reliability during use, and is beneficial to enabling the electrochemical device to have relatively high electrochemical performance and gravimetric energy density.
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公开(公告)号：US20210143440A1
公开(公告)日：2021-05-13
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 , H01M10/0525 , H01M10/0569 , H01M10/0567 , H01M4/587 , H01M4/58 , H01M4/133 , H01M4/136 , H01M4/62 , C07C317/12
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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