Lg Chem, Ltd

Lg Energy Solution, Ltd.

Cheoltaek Kim

Sooryoung Kim

Jae-Chan Lee

Seongjun Yun

Sun Jong Lee

Incheol Yeom

Yong Chul Sung

Young Ho Kwon

Taekyu Kang

Jeonghyeon In

A method of predicting a maximum discharge current for a battery cell includes: receiving a discharge time and a discharge limitation voltage; setting a discharge reference voltage; obtaining a proportional constant and an index parameter corresponding to the discharge reference voltage, wherein the proportional constant and the index parameter are applied to a relation between a constant current and a discharge time during a discharge; calculating a constant current for the discharge time by using the proportional constant and the index parameter; and adjusting the discharge reference voltage when a difference between a temporary discharge limitation voltage at which a voltage due to the constant current and an internal resistance of the battery cell is dropped from the discharge reference voltage and the discharge limitation voltage deviates from a predetermined error.

Maximum discharge current prediction method and battery system using the same

The present invention relates to a system and a method of detecting swelling of a battery cell, which, when abnormal swelling is generated in a battery cell embedded in a battery pack, rapidly detect the abnormal swelling and control a supply of a power source to the battery pack to be blocked, thereby preventing a structural deformation of the battery cell and the battery pack and life shortening of the battery, and preventing an accident, such as ignition and explosion.

System and method for sensing battery cell swelling

Growing community of inventors

Daejeon, South Korea

Cheoltaek Kim