The invention discloses an active equalization device and method for a power battery of an electric vehicle. The device comprises an improved Buck-Boost equalization circuit structure and a fuzzy controller, wherein the improved Buck-Boost equalization circuit topological structure comprises multiple groups of Buck-Boost equalization circuits, the multiple groups of equalization circuits are mutually independent, the Buck-Boost equalization circuits are used for connecting a battery pack in series, and the fuzzy controller comprises an input and output variable determination module, an accurate fuzzification module, a fuzzy rule set establishment module and an output quantity defuzzification module which are connected in sequence. The device is advantaged in that a traditional Buck-Boost topological structure equalization circuit structure is improved, an equalization device based on the improved cascaded Buck-Boost structure is provided, the device can achieve energy transfer betweenadjacent single bodies and non-adjacent single bodies at the same time, and the equalization speed is remarkably increased.

    本发明公开了电动汽车动力电池主动均衡装置及方法,该装置包括改进型Buck‑Boost均衡电路结构和模糊控制器,改进型Buck‑Boost电路拓扑结构包括多组Buck‑Boost均衡电路,多组均衡电路之间相互独立,Buck‑Boost均衡电路用于串联电池组;模糊控制器包括依次连接的输入输出变量确定模块、精准量的模糊化模块、模糊规则集建立模块和输出量反模糊化模块;本发明对传统的Buck‑Boost拓扑结构均衡电路结构进行改进,提出一种基于改进型级联式Buck‑Boost结构的均衡装置,该装置可在相邻单体、不相邻单体之间同时实现能量转移,均衡速度显著提升。


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    Title :

    Electric vehicle power battery active equalization device and method


    Additional title:

    电动汽车动力电池主动均衡装置及方法


    Contributors:
    WANG QI (author) / WANG CHEN (author) / BAI ZHE (author)

    Publication date :

    2020-06-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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