Charging method and charging device of battery

Abstract

The invention provides a charging method and a charging device of a battery. The charging method comprises the following steps: (1) determining an average charging rate Ca, an initial charging rate C1 and a termination charging rate CT based on charging time T and a preset first mapping table; based on a preset battery cycle index n, determining the charging time t and the rate amplification I of a single charging rate; and (2) determining a charging combination scheme based on the initial charging multiplying power C1, the termination charging multiplying power CT, the charging time t of the single charging multiplying power and the multiplying power amplification I. According to the invention, the charging rate and the cycle performance of the lithium metal battery are analyzed, and a set of combined charging method is designed and screened, so that the lithium metal battery with high-rate charging performance and cycle performance is realized.

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