The embodiment of the invention provides a heating method and device for a vehicle power battery and a vehicle. The method comprises the steps of obtaining the current temperature of the vehicle powerbattery, the current temperature of the external environment of the vehicle and the current temperature of a heat conduction unit; determining target heating power corresponding to a positive temperature coefficient (PTC) component according to the current temperature of the vehicle power battery, the current temperature of the external environment of the vehicle and the current temperature of the heat conduction unit; controlling the (PTC) component, and heating the vehicle power battery through the heat conduction unit at the target heating power; and furthermore, in the heating process ofthe vehicle power battery, self-adaptively adjusting the heating power of the PTC according to factors influencing the heat absorption of the vehicle power battery. Therefore, at least one of the problems of insufficient heating capacity, thermal shock, frequent starting and stopping of the PTC and the like caused by heating according to a PTC heating manner in the prior art is solved.

    本发明实施例提供了一种车辆动力电池的加热方法、装置和车辆,所述的方法包括:获取所述车辆动力电池当前的温度、车辆外部环境当前的温度和导热单元当前的温度;依据所述车辆动力电池当前的温度、所述车辆外部环境当前的温度和所述导热单元当前的温度,确定正温度系数元器件PTC对应的目标加热功率;控制所述正温度系数元器件PTC,以所述目标加热功率通过所述导热单元为所述车辆动力电池加热;进而能够在车辆动力电池加热过程中,通过根据影响车辆动力电池热量吸收的因素,来对PTC的加热功率进行自适应调节;从而解决按照现有技术PTC加热方式加热所出现的加热能力不足、热冲击和PTC频繁启停等问题中的至少一个。


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    Title :

    Heating method and device for vehicle power battery and vehicle


    Additional title:

    一种车辆动力电池的加热方法、装置和车辆


    Contributors:
    LIU YIMING (author)

    Publication date :

    2020-12-11


    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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