The invention relates to a battery self-heating circuit, which comprises a battery, a switching circuit and a three-phase motor, and is characterized in that the battery, the switching circuit and the three-phase motor are connected in sequence; when the battery has a self-heating requirement, a discharging path and a charging path are formed among the battery, the switching circuit and the three-phase motor; wherein the discharge path is used for enabling the battery to discharge to one phase of the three-phase motor through the discharge path; and the charging path is used for enabling the other two phases in the three-phase motor to charge the battery through the charging path. In the discharging and charging processes of the battery, a polarization reaction occurs in the battery to generate heat, so that the temperature of the battery is quickly increased, the problem that the heat cannot be completely utilized when the battery is heated by cooling liquid is solved, and the heating efficiency of the battery is further improved.

    本申请涉及一种电池自加热电路,所述电池自加热电路包括电池、开关电路以及三相电机,其中,所述电池、所述开关电路以及所述三相电机依次连接;在所述电池具有自加热需求时,所述电池、所述开关电路以及所述三相电机之间形成放电通路以及充电通路;其中,所述放电通路,用于供所述电池通过所述放电通路向所述三相电机中的其中一相放电;所述充电通路,用于供所述三相电机中的其余两相通过所述充电通路向所述电池充电。电池在放电和充电过程中,电池内部会发生极化反应,产生热量,从而实现电池的温度快速提升,避免了通过冷却液加热电池存在的热量不能完全利用的问题,进而提升了电池的加热效率。


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    Title :

    Battery self-heating circuit


    Additional title:

    电池自加热电路


    Contributors:
    ZHANG QIAN (author) / LI YALUN (author) / HU ZUNYAN (author) / HU JIAYI (author) / LI JIANQIU (author)

    Publication date :

    2023-06-06


    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 / 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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