Tsinghua University

Jiangsu Huadong Institute of Li-ion Battery Co., Ltd

Tuan-Wei Li

Li Wang

Xiang-Ming He

Jian-Jun Li

Yong Yang

Hong-Sheng Zhang

Guo-Hua Li

Shu-Hui Wang

A method for screening a lithium ion battery is provided. A number of lithium ion batteries are galvanostatically discharged a to an inflection point voltage at an inflection point of a discharge curve at a first constant current I. The number of lithium ion batteries are rested for a first rest time Tto raise an open circuit voltage of the number of lithium ion batteries to U. Uis greater than the inflection point voltage. The number of lithium ion batteries are galvanostatically discharged to the inflection point voltage at a second constant current I, in which I&#x3c;&#x3c;I. The number of lithium ion batteries are rested for a second rest time Tand the batteries are screened based on a self-discharge of the number of lithium ion batteries.

Method for screening lithium ion battery

Growing community of inventors

Suzhou, China

Tuan-Wei Li