光伏发电锂电池储能均衡方法的研究

Research on photovoltaic power lithium battery energy storage equilibrium method

针对光伏发电锂电池储能系统存在的电池不一致性问题,给出了一种基于电感主动均衡控制模块的滞环均衡控制策略。该方法可以满足各单体电池间均衡的要求,同时可实现单体电池电压最高的电池的能量向电池组内其它电池输送,给出了具体的单体电池电压采集电路。实验结果表明,经均衡控制后,降低了电池容量的不一致性,达到了预期的均衡效果。

For the battery inconsistency problems of the lithium battery energy storage system for photovoltaic power generation, a hysteresis loop equalization control strategy based on inductance active equalization control module was given. The balancing requirements between each single battery were met by the method, and the battery energy of the highest voltage battery could be transported to other battery group. The single battery voltage testing circuit was offered. The experimental results show that after the balance control, the inconsistency of the battery capacity is reduced, and the desired equilibrium control effect is achieved.