公开(公告)号：US10930932B2

公开(公告)日：2021-02-23

申请号：US16268326

申请日：2019-02-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanyun Tan ,  Fuping Luo ,  Shengwei Wang ,  Xinxin Du ,  Qiaoge Wang

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/02

Abstract: The present disclosure provides a positive electrode plate and a battery, the positive electrode plate comprises a positive current collector and a positive film, the positive film is provided on least one surface of the positive current collector and comprises a positive active material, the positive active material comprises a layered lithium-containing compound, and an OI value of the positive film represented by COI is less than or equal to 150. The positive electrode plate of the present disclosure has smaller swelling and excellent dynamics performance, and the battery of the present disclosure has high safety performance, excellent dynamics performance and long cycle life at the same time.

公开(公告)号：US20200006765A1

公开(公告)日：2020-01-02

申请号：US16268326

申请日：2019-02-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yanyun Tan ,  Fuping Luo ,  Shengwei WANG ,  Xinxin DU ,  Qiaoge WANG

IPC: H01M4/525 ,  H01M4/505

Abstract: The present disclosure provides a positive electrode plate and a battery, the positive electrode plate comprises a positive current collector and a positive film, the positive film is provided on least one surface of the positive current collector and comprises a positive active material, the positive active material comprises a layered lithium-containing compound, and an OI value of the positive film represented by COI is less than or equal to 150. The positive electrode plate of the present disclosure has smaller swelling and excellent dynamics performance, and the battery of the present disclosure has high safety performance, excellent dynamics performance and long cycle life at the same time.

公开(公告)号：US11031622B2

公开(公告)日：2021-06-08

申请号：US16443455

申请日：2019-06-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qiaoge Wang ,  Shengwei Wang ,  Chuanmiao Yan ,  Fuping Luo ,  Yanyun Tan ,  Manfang Zhang

IPC: H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0566 ,  H01M4/583 ,  H01M4/133 ,  H01M4/131

Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5≤(m×C)/(ρ×Cap)≤6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.

公开(公告)号：US20200014061A1

公开(公告)日：2020-01-09

申请号：US16443455

申请日：2019-06-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qiaoge Wang ,  Shengwei Wang ,  Chuanmiao Yan ,  Fuping Luo ,  Yanyun Tan ,  Manfang Zhang

IPC: H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0566 ,  H01M4/587

Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5≤(m×C)/(ρ×Cap)≤6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.