Lg Energy Solution, Ltd.

Lg Chem, Ltd

Dong Keun Kwon

Hyun Chul Lee

An Soo Kim

Seung Hyun Kim

Sung Yul Yoon

Ju Hyun Kang

Chae Bin Shin

Minchul Jang

Byoungkuk Son

Seong Ho Lee

Da Young Sung

Yu Mi Kim

Gi Su Park

Min Seo Kim

Younghwan Kim

Jae Sung Im

Yee Gahng Song

Taejoong Lee

A battery management apparatus according to an embodiment of the present invention includes a state of health (SOH) calculating unit calculating an SOH of each of a plurality of battery cells and a balancing target determining unit selecting, as a second battery cell, a battery cell having a state of charge (SOC) difference from a first battery cell having a lowest SOC among the plurality of battery cells, the SOC difference being greater than or equal to a reference value, and determining a balancing target by comparing an SOH of the first battery cell with an SOH of the second battery cell.

Battery management apparatus and method

A battery diagnosis apparatus for diagnosing a battery including battery cells, the apparatus according to an embodiment may include a voltage measurer for measuring the voltage of each battery cell during a preset period of time, a voltage variation calculator for calculating an individual voltage variation of each battery cell during the preset period of time, an average voltage variation calculator for calculating an average voltage variation of the battery cells during the preset period of time, and an abnormality detector for determining that a voltage abnormality has occurred in at least one battery cell among the battery cells when a difference between the voltage variation of the at least one battery cell and the average voltage variation of the at least one battery cell is greater than a threshold value.

Battery diagnosis apparatus and method

The present disclosure relates to a battery management system and method for diagnosing abnormal deterioration of a battery cell, and provides the battery management system including an SOC calculation unit for calculating a state of charge (SOC) of a plurality of battery cells, a change amount calculation unit for calculating, for each of the plurality of battery cells, an SOC change amount that is a change amount of the calculated SOC during a preset period and an SOC change amount average that is an average of the SOC change amount of all the plurality of battery cells, and an abnormal deterioration diagnosis unit for diagnosing an abnormal deterioration of each of the plurality of battery cells using the SOC change amount and the SOC change amount average thereby accurately diagnosing abnormal deterioration of battery cells.

Apparatus and method for diagnosing abnormal degradated battery cell

An apparatus for diagnosing a battery cell according to an embodiment may include a voltage measurer that measures a voltage of each battery cell of a battery module in a state of an open circuit voltage of a battery, a memory that stores the measured voltage at predetermined time intervals, and an abnormality detector that compares a current measured voltage with a measured voltage before a preset time for each battery cell and determines that an abnormality has occurred in a first battery cell among the battery cells when a difference between the current measured voltage of the at least one battery cell and the measured voltage of the at least one battery cell before the preset time exceeds a reference value.

Apparatus and method for diagnosing battery cell

The present invention includes providing a plurality of batteries connected to a power generation line connected to an external generator, measuring the temperature of a space in which the plurality of batteries are positioned, and controlling charging and discharging between the plurality of batteries according to the measured temperature so as to raise the temperature of the plurality of batteries, and the present invention can prevent a reduction in the temperature of the battery.

Battery device and battery temperature adjusting method

A battery pack according to an embodiment of the present disclosure may include a plurality of battery cells and a BMS for controlling the battery pack. The BMS may include a state-of-charge (SOC) calculation module for calculating a SOC of each of the plurality of battery cells included in the battery pack and a faulty battery cell detection unit for detecting at least one faulty battery cell on the basis of the calculated SOC of each of the plurality of battery cells.

Apparatus and method for detecting faulty battery cell

The present disclosure relates to a battery module that has a filling portion transformed into a structure in which a battery cell is supported such that swelling pressure generated when swelling occurs is offset without an additional control, or a structure in which the battery cell is efficiently cooled.

Battery module

Provided are an apparatus and a method for sensing swelling of a battery. According to an exemplary embodiment of the present invention, the apparatus for sensing swelling of a battery includes: a sensing circuit configured to be coupled to one side of a housing of the battery; a current sensing unit configured to sense whether a current is conducted between the sensing circuit and the other side of the housing of the battery; and a determination unit configured to determine whether the battery is swelled by the sensing.

Apparatus and method for sensing swelling of battery

The present invention provides a battery management apparatus and method which connect a plurality of batteries having different energy densities to each other and control power supplied through the plurality of batteries to control the driving of the driving body.

Provided is a current measuring relay device capable of measuring a current flowing in a relay and controlling an operation of the relay based on the measured result, without depending on a control operation of an external control device such as a battery management system (BMS) by integrating the relay with a current measuring sensor.

Growing community of inventors

Daejeon, South Korea

Dong Keun Kwon