State-of-charge balancing strategy of battery energy storage units
Therefore, combining with various operating conditions of the system, this paper proposes a SOC balance strategy of battery energy storage units with a voltage balance
Battery balancing maximizes the useful capacity of the pack by guaranteeing that all cells in the pack have the same SOC. This implies that you can maximize the use of your battery pack whether you're driving an electric car or using a renewable energy storage system to power your home.
Active battery balancing uses the energy shuttle of capacitance or inductance to transfer the energy in the high SOC battery to the low SOC battery and redistributes the energy by designing a specific energy converter.
This agent takes the current state information from the battery pack (cell voltages, SoC, temperatures, and SoH, etc.) and then selects a set of balancing actions to execute that will minimize the voltage or SoC imbalances between battery cells.
During the balancing process, the balancing current is very small and the charging speed is fast; equalization does almost nothing to increase the maximum rechargeable capacity of the battery pack. We divided different balance intervals according to different voltage of the battery cell, as shown in Figure 6. Equilibrium interval division.
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