Samsung Sdi Co., Inc.

Yoonphil Eo

Young Shin Cho

Yongheui Song

Hyomin Kim

Gangya Park

Dongsu Ko

Seung-Il Kim

Jaewoo Kam

Junho Yun

Jae Shik Yoo

A charge and discharge control device of a battery charges the battery with a constant current in a constant current mode. When the voltage of the battery corresponds to an end-of-charge voltage, the charge and discharge control device converts the constant current mode to a constant voltage mode and thereby charges the battery with a constant voltage. The end-of-charge voltage is set as a first end-of-charge voltage minus a negative electrode threshold potential from the full-charge voltage of the battery, and the negative electrode threshold potential is a potential value of the negative electrode where a negative electrode active material contained in the battery causes a phase change.

Battery charging/discharging control device and method for controlling same

A battery system includes a battery module that includes a plurality of battery cells, a monitoring unit configured to monitor a parameter of each of the battery cells, and a control unit configured to determine whether there is an abnormal battery cell in the battery module using the parameter, to calculate a reference voltage for balancing the battery cells when it is determined that there is an abnormal battery cell in the battery module, and to control cell balancing of the battery cells to an equalization target range.

Battery system and method for controlling battery system

A charging control device includes: a battery state detector configured to detect a cell voltage of at least one cell of a battery and a charging current between the battery and a charging device; and a controller configured to perform a cell over voltage protection (COVP) function on the battery based on a cell over voltage protection voltage, and to vary the cell over voltage protection voltage in response to the charging current.

Charging control device and method

In a method of controlling a battery system having a battery module comprising a plurality of battery sub modules connected in parallel between system terminals, the method includes: measuring voltage values of the plurality of battery sub modules and/or cells in the plurality of battery sub modules and current values that flow on the battery module; detecting an occurrence of an internal short in the battery module by monitoring the voltage values or the current values; and electrically separating at least one battery sub module in which the internal short occurs from among the plurality of battery sub modules from the system terminals in response to the internal short occurring in the battery module.

Battery system including battery modules connected between system terminals and control method thereof

A battery pack includes a battery including at least one battery cell, a cell balancing device configured to balance a voltage of the at least one battery cell, a switch unit including a charging switch and a discharging switch arranged on a high current path through which a charging current and a discharging current flow, and a battery management unit configured to monitor a voltage and a current of the battery, to control the cell balancing device, and to control charging and discharging operations of the battery, wherein when a state of the battery during charging with a constant current satisfies a preset swelling condition, the battery management unit is configured to operate the cell balancing device for a preset discharging time to make the battery self-discharge, when the present discharging time passes, the battery management unit is configured to pause the battery from self-discharging for a preset pausing time, and when the preset pausing time passes, the battery management unit is configured to charge the battery.

Battery pack and method for charging battery pack

In a method for detecting an internal short of a battery, the method includes: acquiring first charge state information related to a charge state of the battery; detecting a first reference time point when the first charge state information satisfies a reference condition; acquiring second charge state information related to the charge state of the battery; detecting a second reference time point when the second charge state information satisfies a reference condition; and detecting an internal short of the battery based on a difference between a charge amount from the first reference time point to the second reference time point and a discharge amount from the first reference time point to the second reference time point.

Battery control apparatus and method for detection internal short of battery

In a method for detecting an internal short of a battery, the method includes: measuring a voltage of a battery a plurality of times; and determining whether or not the internal short of the battery occurs based on a difference between a first voltage value of the battery during a first time period and a second voltage value of the battery during a second time period when the battery is in constant current charging, wherein the second time period is a time period after the first time period.

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Yongin-si, South Korea

Yoonphil Eo