Lg Chem, Ltd

Lg Energy Solution, Ltd.

Yeon-Do Park

Jang-Soo Ock

You-Seob Gil

An apparatus and method for diagnosing whether a charging and discharging switching element provided on a charging and discharging path of a battery pack operates normally. A charging and discharging switching unit having a charging and discharging switch and a fuse is installed on a charging and discharging path between a battery cell and a pack terminal. The apparatus includes a first diagnosing path a second diagnosing path, a third diagnosing path, an integrated diagnosing path having a diagnosis switching unit and a diagnosis resistor, a voltage measuring unit, and a control unit configured to turn on and off the diagnosis switching unit and determine whether the charging and discharging switching unit is operating abnormally based on the diagnosis voltage measured by the voltage measuring unit.

Battery pack diagnosis apparatus

A current estimation device according to an embodiment of the present disclosure is a device for estimating a charging/discharging current of a battery pack and includes: a shunt resistor connected between a first node and a second node on a charging/discharging path of the battery pack; a shunt capacitor connected between the first node and the second node; a voltage measuring unit connected between the first node and the second node to measure a voltage applied to the shunt resistor; and a current estimating unit configured to estimate the charging/discharging current of the battery pack by using the voltage measured by the voltage measuring unit.

Growing community of inventors

Daejeon, South Korea

Yeon-Do Park