公开(公告)号：US20240128525A1

公开(公告)日：2024-04-18

申请号：US18394406

申请日：2023-12-22

Applicant: Ningde Amperex Technology Limited

Inventor： Qi SUN ,  Huixin WANG ,  Ying WANG

IPC: H01M10/44 ,  H01M10/052 ,  H02J7/00

CPC classification number: H01M10/445 ,  H01M10/052 ,  H01M10/448 ,  H02J7/007182 ,  H02J7/007188

Abstract: A management method of an electrochemical device, includes: when the electrochemical device is in a preset state, measuring a predetermined parameter of the electrochemical device, and in response to the predetermined parameter meeting a preset condition, performing at least one discharge-charge operation on the electrochemical device. The discharge-charge operation includes: discharging the electrochemical device to a second voltage threshold, and charging the electrochemical device to a third voltage threshold. The second voltage threshold is less than a first voltage threshold, the first voltage threshold is a limited charge voltage of the electrochemical device, and a difference between the third voltage threshold and the first voltage threshold is not greater than 20%.

公开(公告)号：US20200067063A1

公开(公告)日：2020-02-27

申请号：US16355399

申请日：2019-03-15

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Xiangrong CHEN ,  Zhiyuan LIU ,  Huiqin WANG ,  Ying WANG

IPC: H01M2/26 ,  H01M2/16 ,  H01M10/0587

Abstract: The present application discloses a cell and an electrochemical device. The cell includes: a first electrode sheet, a first electrode tab, a second electrode sheet, and a second electrode tab. The first electrode sheet includes a first current collector and a first active material layer. The first current collector includes a first end portion, and two sides of the first end portion are provided with the first active material layer. The second electrode sheet includes a second current collector and a second active material layer. The first end portion has a width being one third of a width of the first electrode tab. In a first direction, the cell has a thickness t at the first end portion, the cell has a thickness T at the first electrode tab or the second electrode tab, and t is greater than or equal to 95% of T.