Hyundai Motor Company

Kia Motors Corporation

Ji Won Nam

Woo Sung Kim

Kyung Ho Kim

Jin Wook Kim

Jae Hoon Choi

Suk Hyung Kim

Hae Kyu Lim

Yong Hwan Choi

Jun Seok Choi

Sang Mok Park

Kyung In Min

Yu Seok Kim

Yoon Jun Lee

Jeong Hun Seo

Byung Su Kim

Yong Jae Kim

Jun Ho Bang

Hyo Sik Moon

Hui Tae Yang

Jung Je Woo

Dong Ii Kim

A battery management system (BMS) may include a battery, a relay configured to electrically connect and disconnect the battery for supplying a voltage (an electric power) to an electric load to and from the electric load, the electric load configured to receive the voltage (the electric power) from the battery, to compare the received voltage (the electric power) with a reference value and to output a wakeup signal according to the compared result, when the relay is electrically connected, and a controller configured to wake up by the wakeup signal, to monitor a state of the battery and to control a state of the relay. It is possible to prevent overdischarge and overcharge of the battery by monitoring the battery through the electric load in a state in which a vehicle is turned off and switching the BSM to a wakeup state only if necessary.

Battery management system and method of controlling the same

Disclosed herein is a technique for determining degradation of a high-voltage battery of a vehicle. More specifically, variations in charge capacity with respect to a predetermined variation in voltage of a high-voltage battery that is currently being slowly charged are obtained depending on degradation degrees of the high-voltage battery. A vehicle equipped with a high-voltage battery having a specification identical to those of the high-voltage battery is used to acquire a charge capacity and a voltage of the high-voltage battery that is currently being slowly charged. A variation in charge capacity with respect to the predetermined variation in voltage is calculated from the charge capacity and the voltage. The variation in charge capacity with respect to the predetermined variation in voltage is compared with the variations in charge capacity with respect to the predetermined variation in voltage depending on the degradation degrees, thus determining a relevant degradation degree.

Technique of determining degradation of high-voltage battery for vehicle

Growing community of inventors

Gwangmyeong-si, South Korea

Ji Won Nam