Samsung Sdi Co., Inc.

Cheolgi Son

Junyoung Kim

Kwangmin Yoo

Inseob Song

Hwasu Kim

Sujun Park

Dongrak Kim

Jongrock Choi

Hyunjun Do

Jeongkurn Park

Jiwon Jung

Hwa-Su Kim

Takao Hidaka

Wonkyoung Cho

A voltage detection integrated circuit may include: a voltage detection circuit electrically connected to a plurality of cells to detect a cell voltage of a corresponding one of the plurality of cells; a plurality of cell balancing switches configured to conduct or block a flow of a balancing current of a corresponding cell among the plurality of cells; a temperature sensor configured to detect an internal temperature of the voltage detection integrated circuit; and a controller configured to differently select a number of cell balancing switches that are simultaneously turned on depending on the internal temperature, and to turn on the selected switches, when the internal temperature is below a first threshold value.

Voltage detection integrated circuit and battery management system comprising same

A battery system includes a first battery, a second battery, and a battery manager. The first battery is electrically connected between a first node and a second node via a first module switch in a short circuit state. The second battery is electrically insulated from the first battery by a second module switch in an open circuit state. The battery manager detects a first battery voltage of the first battery, a second battery voltage of the second battery, and a system current flowing between the first and second nodes, determines an open circuit voltage of the first battery based on the first battery voltage and the system current, and short-circuits the second module switch when the open circuit voltage is substantially equal to the second battery voltage so that the at least one second battery is connected to the at least one first battery in parallel.

Battery system

A battery system includes a first battery pack, a second battery pack, a bidirectional power converter, and a current controller. The first battery pack includes at least one first battery cell. The second battery pack is connected to the first battery pack in parallel and includes at least one second battery cell. The bidirectional power converter is connected between the first battery pack and the second battery pack. The current controller sets a discharge current limit of the first battery pack based on a state of charge of the first battery pack and controls the bidirectional power converter to cause the first battery pack to output a discharge current that is less than or equal to the discharge current limit.

Growing community of inventors

Yongin-si, South Korea

Cheolgi Son