The invention relates to an electric vehicle battery equalization charging control method, in the charging equalization process, a fuzzy control algorithm is used to adjust the charging amount of eachsingle battery in a battery pack to realize equalization, and the method specifically comprises the following steps: setting language variables of a fuzzy controller; fuzzifying the set language variables; determining a fuzzy control rule, and making the control rule into a fuzzy state table; and carrying out defuzzification by adopting weighted average to obtain a PWM duty ratio signal u of each single battery, and controlling the charging amount of each single battery. Compared with the prior art, the control effect on deviation is improved, and then the sensitivity of the system is improved; and meanwhile, a double-input single-output fuzzy controller is designed, and a membership function with a wide adjustable range is found by continuously adjusting a fuzzy set domain, so that thesystem stability is improved.

    本发明涉及一种电动汽车电池均衡充电控制方法,在充电均衡过程中,利用模糊控制算法调节电池组中每个单体电池的充电量实现均衡,具体包括:设置模糊控制器的语言变量;将设置的语言变量模糊化;确定模糊控制规则,将控制规则制作成模糊状态表;采用加权平均进行反模糊化得到每个单体电池的PWM占空比信号u,对每个单体电池的充电量进行控制。与现有技术相比,本发明提高了对偏差的控制作用,进而提高系统灵敏度;同时设计双输入单输出模糊控制器,通过对模糊集合论域的不断调节,找到可调节范围广的隶属度函数,提高系统稳定性。


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    Titel :

    Electric vehicle battery equalization charging control method


    Weitere Titelangaben:

    一种电动汽车电池均衡充电控制方法


    Beteiligte:
    FU XIAOLIN (Autor:in) / WANG HONG (Autor:in) / CHENG LINING (Autor:in) / WANG ZHIJIE (Autor:in) / SUN XIA (Autor:in) / TAO MENGLIN (Autor:in) / LI ZHANHUI (Autor:in) / WANG YANG (Autor:in) / ZHANG ZHIYU (Autor:in) / QU XINGWEI (Autor:in)

    Erscheinungsdatum :

    2020-05-15


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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