The invention provides a heating system and a heating circuit and a heating method of a power battery pack. According to the heating circuit of the power battery pack, when a first switching device is switched off and a second switching device is switched on, a neutral point of a three-phase motor is connected with a positive electrode of the power battery pack through the second switching device; therefore, the power battery pack can charge the first capacitor branch through the three-phase motor and the motor driving circuit, namely, charging and discharging of the power battery pack are achieved, internal resistance of the power battery pack emits heat in the charging and discharging process, and therefore heating of the power battery pack can be achieved. Besides, in the heating circuit of the power battery pack, only the second switch device is a newly added device, so that the heating circuit of the power battery pack can heat the power battery pack and reduce the heating cost of the power battery pack.

    本申请提供一种加热系统以及动力电池组的加热电路和加热方法。在该动力电池组的加热电路,在第一开关装置断开、第二开关装置闭合时,三相电机的中性点通过第二开关装置与动力电池组的正极相连,因此通过三相电机和电机驱动电路可以实现动力电池组对第一电容支路的充电以及第一电容支路对动力电池组的充电,即实现了动力电池组的充放电,而在动力电池组的充放电过程中其内阻发热,从而可以实现对动力电池组的加热;另外,在该动力电池组的加热电路中,仅第二开关装置是新增的器件,因此该动力电池组的加热电路,在实现动力电池组加热的同时,降低了动力电池组的加热成本。


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    Title :

    Heating system and heating circuit and heating method of power battery pack


    Additional title:

    一种加热系统以及动力电池组的加热电路和加热方法


    Contributors:
    TANG ZIQIANG (author) / WU SIBEI (author) / WANG DONGCUI (author) / WANG JIAN (author) / ZHOU FEI (author)

    Publication date :

    2024-05-07


    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 / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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