Lg Energy Solution, Ltd.

Sung-Ju Hong

Dong-Hyun Kim

Dong-Chun Lee

Seung-hwan Kim

Seog-Jin Yoon

Geon Choi

Discussed is a battery diagnosing apparatus that can include a resistance measuring unit configured to measure an internal resistance of each of a plurality of battery modules including one or more battery cells, and a control unit configured to receive resistance information about the internal resistance of each of the plurality of battery modules from the resistance measuring unit, calculate a first criterion resistance and an absolute deviation between the first criterion resistance and the internal resistance, convert the calculated absolute deviation into a resistance deviation for the plurality of battery modules based on the resistance information, set a first resistance section based on the calculated first criterion resistance and the calculated resistance deviation, select a part of the plurality of battery modules as a target module based on the resistance information, and calculate a second criterion resistance for the target module based on the resistance information.

Battery diagnosing apparatus and method

A battery management apparatus according to the present disclosure may include a sensing unit detachably mounted to a battery system and configured to measure a voltage of a cell assembly included in a battery pack, which is electrically connected to another battery pack in parallel, when being mounted to the battery system; a balancing circuit having a balancing resistor connected to a charging and discharging path of the cell assembly in parallel and a balancing switch for electrically connecting or disconnecting the cell assembly and the balancing resistor; and a processor operably coupled to the sensing unit and the balancing circuit.

Battery management apparatus and method

A battery management apparatus, including: a sensing unit configured to measure a pack voltage value of a battery pack configured to be charged by receiving a charging current from an engine, output a starting current to turn on the engine, and output an operating current to operate electronic components, and a processor configured to: set a first voltage region by using a first current value (CV) of the charging current and an internal resistance value (IRV) of the battery pack, set a second voltage region by using a second CV of the starting current and the IRV, set a third voltage region by using a third CV of the operating current and the IRV, calculate a voltage change amount of the pack voltage value, compare the first, second, and third voltage regions with the voltage change amount, and determine whether the battery pack is charged or discharged.

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Daejeon, South Korea

Sung-Ju Hong