The invention provides a vehicle battery self-heating method and device, and the method comprises the steps: in responce to a request signal for heating a battery, a periodic signal with a set frequency is output to a vehicle battery self-heating device; an LC oscillation unit in the vehicle battery self-heating device is connected with a battery; the periodic signal comprises a first electric signal and a second electric signal which are alternate, and the first electric signal controls the LC oscillation unit and the battery to form a charging loop; the second electric signal controls the LC oscillation unit and the battery to form a discharge loop; and the set frequency is greater than the resonant frequency of the LC oscillation unit. By adopting the scheme provided by the invention to perform self-heating on the battery, a PTC (Positive Temperature Coefficient) heater does not need to be additionally arranged, the structure of the battery system is simplified, the cost is reduced, and on the other hand, the self-heating mode of the battery has higher heating efficiency and better uniformity.

    本发明提供一种车辆电池自加热方法及装置,其方法包括:响应于加热电池的请求信号,输出设定频率的周期信号至车辆电池自加热装置;所述车辆电池自加热装置中的LC振荡单元与电池相连;所述周期信号包括交替的第一电信号和第二电信号,所述第一电信号控制所述LC振荡单元与所述电池形成充电回路;所述第二电信号控制所述LC振荡单元与所述电池形成放电回路;所述设定频率大于所述LC振荡单元的谐振频率。采用本发明中的方案对电池进行自加热,无需额外增加PTC加热器,简化了电池系统的结构、降低了成本,另一方面,电池自发热的加热方式具有更高的加热效率和更好的均匀性。


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    Title :

    Vehicle battery self-heating method and device


    Additional title:

    一种车辆电池自加热方法及装置


    Contributors:
    CHEN CHANGHONG (author) / SUN CHUNZHE (author) / GONG XIAOFENG (author) / ZHUANG ZHAOHUI (author) / WANG JUNWEN (author)

    Publication date :

    2021-11-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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