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公开(公告)号：US20240413332A1
公开(公告)日：2024-12-12
申请号：US18424880
申请日：2024-01-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jiazheng Wang , Qingwei Yan , Xiaobin Dong
Abstract: Provided are a battery cell, a battery and an electric device. The battery cell includes a positive electrode plate and a negative electrode plate, the negative electrode plate includes a negative electrode current collector, a negative electrode active material layer arranged on at least one surface of the negative electrode current collector, and a lithium supplement layer, wherein the negative electrode active material layer includes a first portion and a second portion connected with the first portion, the first portion exceeds the positive electrode plate, the second portion is arranged corresponding to the positive electrode plate, and the lithium supplement layer is arranged on at least part of a surface of the first portion away from the negative electrode current collector. The negative electrode plate of the present application can improve the first Coulomb efficiency, cycle performance and storage performance of the battery cell.
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2.发明公开公开(公告)号：US20240170641A1
公开(公告)日：2024-05-23
申请号：US18424867
申请日：2024-01-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xiaobin Dong , Jiazheng Wang , Qingwei Yan
CPC classification number: H01M4/13 , H01M4/628 , H01M2004/021 , H01M2004/027
Abstract: Provided are a secondary battery and a battery module, battery pack, and electric apparatus containing such secondary battery. The secondary battery includes: a positive electrode plate including a positive electrode film layer; a separator; and a negative electrode plate. The negative electrode plate includes: a first negative electrode film layer, the first negative electrode film layer being provided opposite the positive electrode film layer with the separator therebetween; and a second negative electrode film layer, the second negative electrode film layer including a negative electrode film layer not provided opposite the positive electrode film layer, and the second negative electrode film layer including a central region and a peripheral region surrounding the central region, where a lithium source used for supplementing lithium to the first negative electrode film layer is stored in at least a portion of the peripheral region of the second negative electrode film layer.
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Patent Agency Ranking
3.发明公开公开(公告)号：US20230216028A1
公开(公告)日：2023-07-06
申请号：US18182403
申请日：2023-03-13
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Binyi Chen , Jiazheng Wang , Qingwei Yan
Abstract: A negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device are provided. The negative electrode plate includes a negative current collector and a negative film layer disposed on the negative current collector. The negative film layer includes a first negative film layer and a second negative film layer. The second negative film layer is located between the negative current collector and the first negative film layer. The second negative film layer includes a metal element M, and an atomic radius rM of M and an atomic radius rLi of Li satisfy
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4.发明公开公开(公告)号：US20240266618A1
公开(公告)日：2024-08-08
申请号：US18640009
申请日：2024-04-19
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qingwei Yan , Jiazheng Wang , Xiaobin Dong
IPC: H01M10/42 , H01M4/02 , H01M4/139 , H01M4/62 , H01M10/0525 , H01M10/0587
CPC classification number: H01M10/4235 , H01M4/139 , H01M4/62 , H01M10/0525 , H01M10/0587 , H01M2004/027 , H01M2220/20
Abstract: This application relates to a secondary battery including a positive electrode plate and a negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode film layer provided on each of two surfaces of the positive electrode current collector, the negative electrode plate includes a negative electrode current collector and a negative electrode film layer provided on each of two surfaces of the negative electrode current collector, and the negative electrode film layer includes a reaction zone opposite the positive electrode film layer and a non-reaction zone not opposite the positive electrode film layer, where a barrier layer is provided on a surface of the non-reaction zone. This application also relates to a preparation method of secondary battery, a battery module, a battery pack, and an electric apparatus.
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公开(公告)号：US20230207786A1
公开(公告)日：2023-06-29
申请号：US18059431
申请日：2022-11-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Liangbin Liu , Jiazheng Wang , Zijian Lv , Qingwei Yan , Binyi Chen
CPC classification number: H01M4/366 , H01M4/134 , H01M10/0468 , H01M2004/027
Abstract: The present application provides a secondary battery including a negative electrode sheet, and the negative electrode sheet includes: a negative electrode current collector; a first negative film layer provided on at least one surface of the negative electrode current collector; and a second negative film layer provided on a surface of the first negative film layer; where the first negative film layer includes a first negative active material and a first conductive agent, and the first negative active material includes a silicon-based material; and a mass proportion of the silicon-based material in the first negative film layer is greater than or equal to 30%, and a mass proportion of the first conductive agent in the first negative film layer is greater than or equal to 25%. A battery cell of the secondary battery of the present application does not easily expand and has good cycle performance.
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公开(公告)号：US20240170659A1
公开(公告)日：2024-05-23
申请号：US18430676
申请日：2024-02-02
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jiazheng Wang , Qingwei Yan , Liangbin Liu , Xiaobin Dong , Zijian Lv
CPC classification number: H01M4/483 , H01M4/133 , H01M4/139 , H01M4/366 , H01M4/587 , H01M4/622 , H01M4/625 , H01M2004/021 , H01M2004/027
Abstract: Provided is a negative electrode plate, comprising: a negative electrode current collector and a first negative electrode active material layer. The first negative electrode active material layer is arranged on at least one surface of the negative electrode current collector, wherein, components of the first negative electrode active material layer comprise, by mass: 30%-70% of a silicon-based material, 15%-40% of a binder and 15%-40% of a conductive agent.
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7.发明公开公开(公告)号：US20240145791A1
公开(公告)日：2024-05-02
申请号：US18407451
申请日：2024-01-09
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qingwei Yan , Xiaobin Dong , Jiazheng Wang
IPC: H01M10/42 , H01M4/04 , H01M4/139 , H01M4/62 , H01M10/0525
CPC classification number: H01M10/4235 , H01M4/0402 , H01M4/139 , H01M4/62 , H01M10/0525 , H01M2004/027
Abstract: A secondary battery is provided, including a positive electrode plate and a negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode film layer provided on two surfaces of the positive electrode current collector, the negative electrode plate includes a negative electrode current collector and a negative electrode film layer provided on two surfaces of the negative electrode current collector, and the negative electrode film layer includes a reaction zone opposite the positive electrode film layer and a non-reaction zone not opposite the positive electrode film layer, where a lithium supplement layer and a barrier layer are provided on the non-reaction zone. A preparation method of secondary battery, a battery module, a battery pack, and an electric apparatus are also provided.
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