公开(公告)号：US20230042859A1

公开(公告)日：2023-02-09

申请号：US17957002

申请日：2022-09-30

Applicant: Ningde Amperex Technology Limited

Inventor： Jun He ,  Hui Cui ,  Qiang Zheng ,  Zhanzhao Fang

IPC: H01M10/44 ,  H01M10/42 ,  H01M50/491 ,  H02J7/00

Abstract: A method for enhancing battery cycle performance. The method is applied in a battery and includes: charging, at a first stage, the battery at a first-stage current until reaching a first-stage voltage; and charging, at a second stage, the battery at a second-stage current until reaching a second-stage voltage. The second-stage voltage is greater than the first-stage voltage, and the second-stage current is less than the first-stage current. The battery includes an electrolytic solution containing an organic solvent. The organic solvent includes a chain carboxylate compound. A weight percent of the chain carboxylate compound in the organic solvent is 10% to 70%. This application further provides an electronic device. The method can enhance high-temperature cycle and storage performance of the battery.