The invention discloses a battery self-heating system, a control method thereof and an electric vehicle, the battery self-heating system comprises a three-phase motor, a battery pack, a three-phase inverter and a switch module, and the control method of the battery self-heating system comprises the following steps: acquiring temperature information of the battery pack; when it is determined that the battery pack needs self-heating according to the temperature information of the battery pack, voltage information between the first end and the second end of the switch module is obtained; the switch module is controlled according to the voltage information between the first end and the second end of the switch module so as to realize self-heating of the battery pack; acquiring current information between the first end and the second end of the switch module when determining that the battery pack does not need to be self-heated according to the temperature information of the battery pack; according to the current information between the first end and the second end of the switch module, the switch module is controlled to forbid self-heating of the battery pack, so that self-heating of the battery can be accurately controlled, normal self-heating operation of the battery can be ensured, and the charging and discharging efficiency of the battery is improved.

    本发明公开了一种电池自加热系统及其控制方法、以及电动车辆,其中,电池自加热系统包括三相电机、电池组、三相逆变器和开关模块,电池自加热系统的控制方法包括:获取电池组的温度信息;在根据电池组的温度信息确定电池组需要自加热时,获取开关模块第一端和第二端之间的电压信息;根据开关模块第一端和第二端之间的电压信息对开关模块进行控制,以实现电池组自加热;在根据电池组的温度信息确定电池组无需自加热时,获取开关模块第一端和第二端之间的电流信息;根据开关模块第一端和第二端之间的电流信息对开关模块进行控制,以禁止电池组自加热,从而能够准确控制电池进行自加热,保证电池能够正常进行自加热操作,提高电池的充放电效率。


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    Title :

    Battery self-heating system, control method thereof and electric vehicle


    Additional title:

    电池自加热系统及其控制方法、以及电动车辆


    Contributors:
    PAN HUA (author) / LEE KIL-SUNG (author) / ZHAO BO (author) / ZHENG YIHAO (author) / GUO CHANGCHANG (author)

    Publication date :

    2024-07-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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