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1.发明公开公开(公告)号：US20240124699A1
公开(公告)日：2024-04-18
申请号：US18515290
申请日：2023-11-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Lianwei Duan , Huihui Liu , Cheng Li , Wei Feng
CPC classification number: C08L27/16 , C08L33/08 , H01M4/5825 , H01M4/623 , H01M4/625 , H01M2004/028
Abstract: Provided are a binder composition, an electrode, a battery and a power consuming device. The binder composition comprises a fluoropolymer A and a copolymer B, wherein the copolymer B comprises a structural unit derived from a monomer containing a cyano group and a structural unit derived from a monomer containing an ester group. The binder of the present application has a strong bonding force, and the cycling performance of the secondary battery comprising same is excellent.
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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：US20240421363A1
公开(公告)日：2024-12-19
申请号：US18822320
申请日：2024-09-02
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Cheng Li , Chong Xu , Jianrui Yang
IPC: H01M10/42 , H01M50/403 , H01M50/449
Abstract: This application relates to a separator roll and a preparation method thereof. The separator roll includes a separator body, the separator body having a head end and a tail end in a length direction and being constructed to be capable of winding in the length direction to form a separator roll with the tail end as a roll core. A warning coating is provided on the separator body, the warning coating being configured to be spaced from the tail end by a first preset length. In this way, the warning coating provides a warning in advance for the position of the tail end of the separator body on which the warning coating is located.
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公开(公告)号：US12119483B2
公开(公告)日：2024-10-15
申请号：US17536118
申请日：2021-11-29
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Changliang Sheng , Shiwen Wang , Qisen Huang , Cheng Li , Chengdu Liang
CPC classification number: H01M4/366 , H01M4/13 , H01M4/382 , H01M4/628 , H01M10/0525 , H01M2004/021 , H01M2004/027
Abstract: The present application discloses a negative electrode plate, an electrode assembly, a lithium-ion battery and process for the preparation thereof, and apparatus containing lithium-ion battery. The negative electrode plate includes a negative electrode current collector; a negative electrode active material layer disposed on the negative electrode current collector; a binder-free inorganic dielectric layer disposed on one side of the negative electrode active material layer away from the negative electrode current collector, the inorganic dielectric layer comprising an inorganic dielectric material, and the inorganic dielectric layer including at least a main body portion disposed on the surface of the negative electrode active material layer, the main body portion having a thickness of from 30 nm to 1000 nm; and a lithium metal layer disposed on the surface of the inorganic dielectric layer away from the negative electrode active material layer.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240258520A1
公开(公告)日：2024-08-01
申请号：US18600785
申请日：2024-03-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Cheng Li , Huihui Liu
IPC: H01M4/58 , H01M4/02 , H01M4/62 , H01M10/052
CPC classification number: H01M4/5825 , H01M4/622 , H01M4/625 , H01M10/052 , H01M2004/028
Abstract: Provided is a positive electrode slurry, a secondary battery, a battery module, a battery pack and a power consuming device. The positive electrode slurry comprises a positive electrode active substance, a conductive agent and a binder, wherein the binder comprises a polymer A, and the polymer A comprises a structural unit derived from a monomer containing a cyano group, a structural unit derived from a monomer containing an amide group, and a structure unit derived from a monomer containing an ester group. In the present invention, the polymer A is used as the binder of the positive electrode slurry, such that the stability and processability of the positive electrode slurry are improved, and the adhesive force of the positive electrode plate is increased.
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公开(公告)号：US11901560B2
公开(公告)日：2024-02-13
申请号：US17964074
申请日：2022-10-12
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Cheng Li , Changliang Sheng , Huafeng Huang , Qisen Huang
IPC: H01M4/62 , C23C14/00 , C23C14/08 , C23C14/30 , H01M4/04 , H01M4/133 , H01M4/1393 , H01M4/587 , H01M4/02
CPC classification number: H01M4/628 , C23C14/0021 , C23C14/081 , C23C14/30 , H01M4/0404 , H01M4/0423 , H01M4/133 , H01M4/1393 , H01M4/587 , H01M2004/021 , H01M2004/027
Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer and consists of an inorganic dielectric material. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.
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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：US11522194B2
公开(公告)日：2022-12-06
申请号：US16452542
申请日：2019-06-26
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Cheng Li , Changliang Sheng , Huafeng Huang , Qisen Huang
IPC: H01M4/04 , H01M4/02 , H01M4/62 , C23C14/00 , C23C14/08 , C23C14/30 , H01M4/133 , H01M4/1393 , H01M4/587
Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer and consists of an inorganic dielectric material. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.
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