LFP BATTERY MANAGEMENT APPARATUS AND METHOD FOR PROTECTING A LITHIUM IRON PHOSPHATE CELL FROM OVER-VOLTAGE USING THE SAME

摘要

The present invention discloses a battery management apparatus and an overvoltage protection method of an LFP cell using the same. The battery management apparatus according to an embodiment of the present invention is electrically connected to a plurality of LFP cells connected in series in the LFP battery, and individually measures the voltage of each LFP cell, and outputs a voltage value representing the measured voltage. Voltage measurement unit; And outputting a first signal requesting the start of a charging process for the LFP, and at least one of voltage values of a plurality of LFP cells output from the voltage measuring unit during the charging process by the first signal And a control unit for outputting a second signal requesting to stop the charging process and then outputting a third signal requesting start of the discharging process when the threshold voltage value is reached. In this case, the charging process is configured to increase the voltage provided to the LFP battery from a predetermined initial charging target voltage value to an end charging target voltage value in a stepwise manner. Further, the LFP discharging process is configured to decrease a voltage provided to the LFP battery in a stepwise manner from a predetermined initial discharge target voltage value to an end discharge target voltage value.