Power battery system analysis method and system

The invention relates to a power battery system analysis method and system, and the method is characterized in that the method comprises the steps: building an equivalent circuit model of a single cell according to the characteristic parameters of the single cell in a to-be-researched multi-pack par...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN YANG, YANG CHAO, YE MING, WANG ZHIXIANG, WANG ANMIN, JIANG XUYIN, WANG WENLIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TESTING
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Beschreibung
Zusammenfassung:	The invention relates to a power battery system analysis method and system, and the method is characterized in that the method comprises the steps: building an equivalent circuit model of a single cell according to the characteristic parameters of the single cell in a to-be-researched multi-pack parallel power battery system; constructing an aging model of the single cell, and setting the capacity retention rate and the internal resistance growth rate of the single cell at the end of the service life; constructing a multi-pack parallel power battery system simulation model of the to-be-researched multi-pack parallel power battery system; simulation analysis is carried out on the backflow charging phenomenon of the to-be-researched multi-pack parallel power battery system to obtain battery state parameter changes of the to-be-researched multi-pack parallel power battery system when the backflow charging phenomenon occurs, and then the overcharge voltage of a single cell in the to-be-researched multi-pack paral