公开(公告)号：US20240178365A1

公开(公告)日：2024-05-30

申请号：US18420790

申请日：2024-01-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu Xu ,  Jianfu He ,  Chenxu Luo ,  Qian Liu ,  Yonghuang Ye ,  Yibo Shang

IPC: H01M4/131 ,  H01M4/485 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01M4/485 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided is a positive electrode plate, a secondary battery, and a powered device. The positive electrode plate may be a positive electrode plate of a wound cell, and includes a waist region provided close to a waist portion and an end region provided away from the waist portion. The waist region is provided with a first positive electrode film, and the end region is provided with a second positive electrode film. The positive electrode plate may be a positive electrode plate for a laminated cell, which includes a central region provided close to a center and an edge region provided away from the center. The central region is provided with a first positive electrode film, and the edge region is provided with a second positive electrode film.

公开(公告)号：US11865943B2

公开(公告)日：2024-01-09

申请号：US18182841

申请日：2023-03-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chenxu Luo ,  Jianfu He ,  Qian Liu ,  Yu Yan ,  Yonghuang Ye ,  Haizu Jin

IPC: H02J7/00 ,  B60L58/16 ,  B60L58/18 ,  B60L58/24 ,  H01M50/572 ,  H01M50/155 ,  H01M4/485 ,  H01M10/44

CPC classification number: B60L58/16 ,  B60L58/18 ,  B60L58/24 ,  H01M4/485 ,  H01M10/44 ,  H01M50/155 ,  H01M50/572 ,  B60L2240/545 ,  B60L2240/547

Abstract: A charging method for a secondary battery including a lithium-supplementing material. The method includes acquiring a first state of health of the secondary battery in response to the secondary battery being at a preset charging node, activating the lithium-supplementing material in response to the first state of health being less than or equal to a first threshold to supplement lithium for the secondary battery, performing a charging process on the secondary battery, determining a second state of health of the secondary battery based on a working parameter of the secondary battery in the charging process, and charging the secondary battery in response to the second state of health being greater than a second threshold.