关键词: 新能源汽车；主动均衡技术；均衡设备；均衡效果

Abstract: The surge in the national fleet of new energy vehicles has driven the expansion of the lithium battery balanced maintenance market, but there are significant differences in the balancing effects of different devices. In response to this situation, this paper takes the self-developed equalization based on transformer-type active balance technology as the research object, and studies the balancing effects under different balancing target voltage differences and maximum balancing currents. The results show that the device's equalization effect meets the expected design goals. By setting the target voltage difference at around 20 mV and the maximum equalization current rate at 0.72C, the optimal value of battery maintenance efficiency is achieved. This confirms that "precise setting of target voltage difference+reasonable adaptation of equalization current" is the key to achieving efficient equalization. This conclusion has certain reference significance for parameter selection in actual production and maintenance.

Key words: new energy vehicle; active balance technology; balancing equipment; balanced effect