电动汽车电池组分级均衡充电方法的对比研究

针对电动汽车电池组的特点,基于当前较为先进的非耗散型均衡技术,提出了两种分级均衡充电方法,并对所提出的策略进行对比分析。两种方案都利用了非耗散型均衡效率较高的特点,结合分级控制的概念,可有效适应包括电动汽车在内的大型电池组均衡应用情景。与传统的耗散型均衡相比,所提出的两种均衡方法减少了均衡充电时间,且能耗明显降低,从而降低了电池组热管理的难度,具有较强的实用性。

Comparative research on hierarchical equalized charging schemes for electric vehicle battery

Based on the updated active equalization technology,two hierarchical balance control schemes were proposed to charge the electric vehicle battery.The two schemes were then simulated with typical battery samples and the results were compared with the traditional passive solution.The proposed schemes both took advantage of active balance with its high efficiency,and were applicable to the power batteries on electric vehicles with the hierarchical control strategy.Compared with traditional passive equalization,the proposed methods were faster with lower energy consumption,which reduced the difficulty of thermal management and would be more practical on electric vehicles.