Research on Balance Strategy Based on LOC

By conducting relevant experiments on lithium-ion power batteries and analyzing the manifestations of different battery characteristic parameters (voltage, internal resistance, LOC) on the inconsistency problem of the battery pack, open circuit voltage is selected as the equilibrium variable during the shelving stage, and working voltage is selected as the equilibrium variable during the charging and discharging stage of the battery pack. Select the voltage range as the judgment basis for balanced entry and exit, and determine the corresponding control threshold based on relevant battery tests and circuit requirements; Propose three control strategies for charging balance, discharging balance, and shelving balance for different working stages of the battery pack, and use an equilibrium system model to simulate and verify the equilibrium control strategy.