公开(公告)号：US20240178448A1

公开(公告)日：2024-05-30

申请号：US18429431

申请日：2024-02-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xihui Wang ,  Wenzhu Xu ,  Zeli Wu ,  Canlong Wu ,  Di Liu ,  Qifan Zou

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0037

Abstract: The embodiments of the present application provide an electrolyte solution and a lithium-ion battery comprising the same. The electrolyte solution includes a solvent, a lithium salt and a first additive, and the first additive has a molecular formula of




wherein R is at least one of an H element, a halogen element or an alkyl group having 1 to 3 carbon atoms. The electrolyte solution provided in the embodiments of the present application has the advantages of having a long shelf life, avoiding the problem of the performance decline of lithium-ion batteries due to deterioration of electrolyte solutions, being capable of inhibiting an increase of internal resistance of the lithium-ion batteries in low-temperature cycles, and improving the performance of the lithium-ion batteries.

公开(公告)号：US20190288279A1

公开(公告)日：2019-09-19

申请号：US16432958

申请日：2019-06-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wenzhu Xu ,  Jianqing Sun ,  Guangbo Lu ,  Fan Sun ,  Qifan Zou ,  Shengwei Wang

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/587

Abstract: The present invention provides a lithium ion battery and a negative electrode material thereof. The negative electrode material includes a graphite and an amorphous carbon, wherein the graphite has a graphitization degree of 90˜96% and an average particle diameter D50 of 2˜25 μm, and the amorphous carbon has a graphitization degree of 65˜80% and an average particle diameter D50 of 2˜25 μm. Compared with the prior art, by mixing graphite having a small particle diameter with amorphous carbon, the negative electrode material of the present invention has excellent dynamic performance, cycle performance and storage performance. The present invention also provides a lithium ion battery.

公开(公告)号：US10923761B2

公开(公告)日：2021-02-16

申请号：US16272917

申请日：2019-02-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jiao Cao ,  Qifan Zou ,  Guangbo Lu ,  Shengwei Wang ,  Wenzhu Xu

IPC: H01M4/00 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/02

Abstract: The present disclosure provides a lithium-ion battery, and the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The positive active material comprises a material with a chemical formula of LiaNixCoyM1-x-yO2, the negative active material comprises graphite, the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa satisfy a relationship: 0.05≤OIa/OIc≤10. By reasonably matching the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa and making OIa/OIc between 0.05 and 10, the dynamics performance of the positive electrode plate and the dynamics performance of the negative electrode plate can achieve an optimal match, the lithium-ion battery can have higher charging capability, and also have excellent cycle life and excellent safety performance during the long-term fast charging use.

公开(公告)号：US20230307750A1

公开(公告)日：2023-09-28

申请号：US18328752

申请日：2023-06-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan Zou ,  Peng Wang ,  Feng Qin ,  Xin Chen

IPC: H01M50/184 ,  H01M50/107 ,  H01M50/152 ,  H01M10/04 ,  H01M50/186

CPC classification number: H01M50/184 ,  H01M50/107 ,  H01M50/152 ,  H01M10/049 ,  H01M10/0404 ,  H01M50/186

Abstract: A battery cell, a battery, an electrical apparatus, and a method and a device for preparing a battery cell are provided. In some embodiments, the battery cell comprising: an electrode assembly; a case for accommodating the electrode assembly, wherein the case has an opening and a first position-limiting portion; an end cover for covering the opening, wherein in the thickness direction of the end cover, the end cover is located on one side of the first position-limiting portion facing the electrode assembly, and the first position-limiting portion is used for restricting the movement of the end cover in a direction away from the electrode assembly; and a sealing member for sealing the end cover and the first position-limiting portion, so that the end cover and the first position-limiting portion are in sealed connection.

公开(公告)号：US20220407192A1

公开(公告)日：2022-12-22

申请号：US17821807

申请日：2022-08-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Wenzhong Liu ,  Huasheng Su ,  Qifan Zou ,  Peng Wang

IPC: H01M50/533 ,  H01M50/107 ,  H01M50/152 ,  H01M50/536 ,  H01M50/566 ,  H01M50/559

Abstract: A battery cell, a manufacturing method, a manufacturing system, a battery and an electrical device are provided. In some embodiments, the battery cell of includes an electrode component; a casing for accommodating the electrode component and having an opening; an end cap for sealing the opening of the casing; a current collector member for electrically connecting the electrode component and the end cap, the current collector member including a base portion and an elastic portion connected to the base portion. The elastic portion abuts against the electrode component, so the elastic portion is not required to be welded to the electrode component, thus reducing metal particles to lower the risk of short circuit. The elastic portion is able to deform when squeezed by the electrode component and release the pressure therebetween by deformation, reducing the risk of crushing the electrode component due to excessive pressure.

公开(公告)号：US11050052B2

公开(公告)日：2021-06-29

申请号：US16432958

申请日：2019-06-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wenzhu Xu ,  Jianqing Sun ,  Guangbo Lu ,  Fan Sun ,  Qifan Zou ,  Shengwei Wang

IPC: H01M4/36 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/58 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/1393 ,  H01M4/62 ,  H01M4/02

Abstract: The present invention provides a lithium ion battery and a negative electrode material thereof. The negative electrode material includes a mixture of a graphite and an amorphous carbon, wherein the graphite is subjected to a surface treatment, and the surface treatment manner is a combination of mechanical fusion modification and spray drying coating, and wherein the graphite has a graphitization degree of 90-96%, an average particle diameter D50 of 13-25 μm and a specific surface area BET of 0.8-2.5 m2/g, and the amorphous carbon has a graphitization degree of 65-80%, an average particle diameter D50 of 2-15 μm and a specific surface area BET of 1.0-3.0 m2/g.