Abstract
With the rapid development of electric vehicle industry, repeated charging and discharging in the process of vehicle use will lead to the deterioration of voltage consistency of single battery. How to improve battery life through battery balance has become the focus of research. The structure of charging device which cooperates with DC charging pile is described. The equalizing charging device and charging pile can be cooperated to charge the electric vehicle battery, so as to achieve the balance of battery capacity when each single battery is fully charged by means of the communications among charging pile, main control module and battery BMS. Based on the charging structure, the charging system control strategy is proposed. The shortest charging time, the smallest charging power consumption and the combination of satisfaction are considered to construct the optimal algorithm.
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