Lg Energy Solution, Ltd.

Lg Chem, Ltd

Gyong-Jin Oh

Jin-Kyu Lee

Goan-Su Jung

Jun-Min Lee

Young-Bo Cho

Sung-Yul Yoon

Jeong-Seok Park

A battery pack includes at least two battery modules arranged in one direction; and a fire extinguisher having a linear temperature sensor partially extending linearly along the at least two battery modules and configured to sense whether at least one of the at least two battery modules has a temperature over a predetermined temperature, a fire extinguishing tank configured to accommodate a fire extinguishing agent therein, a pipe connected to the fire extinguishing tank to supply the fire extinguishing agent from the fire extinguishing tank to each of the at least two battery modules, and a valve opened to supply the fire extinguishing agent from the fire extinguishing tank to the battery module over the predetermined temperature.

Battery pack comprising extinguishment unit

The present disclosure relates to an open circuit voltage estimating apparatus capable of estimating an open circuit voltage even when a battery cell does not have a rest time. The open circuit voltage estimating apparatus according to an embodiment of the present disclosure includes a current measuring unit configured to measure a charge/discharge current of a battery cell; a current integrating unit configured to integrate the current measured by the current measuring unit starting from an initial time; a time calculating unit configured to calculate a critical time, that is a time in which the integrated current value integrated by the current integrating unit is within a critical range; a cell voltage measuring unit configured to measure a voltage of the battery cell; and an open circuit voltage estimating unit configured to estimate an open circuit voltage of the battery cell by calculating an average value of the voltage measured by the cell voltage measuring unit during an operation time starting from the initial time to the critical time.

Apparatus and method for estimating open circuit voltage

Growing community of inventors

Daejeon, South Korea

Gyong-Jin Oh