Abstract
Charging is an important part in daily use and maintenance of power battery, while charging strategy will have different effects on performance and charging efficiency of power battery. In this paper, it use 18650 cell of Lithium nickel cobalt manganese oxide as the research object to explore effects of key parameters on battery charging and discharging capacity, charging time, charging temperature rise and energy efficiency in constant current charge, Constant current constant voltage charge, multi-stage constant current charge, intermittent charge Strategy with variable current, pulse current charge. At the same time, it compares differences of battery performance under different charging strategies. Based on data analysis, it selects three optimal charging strategies with significant advantages over conventional charging strategies. The results of this paper have a guiding significance for formulation of vehicle charging strategy.
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