The invention relates to a battery self-heating device and method and an electric vehicle, the battery self-heating device comprises a first control switch, a second control switch, a bridgeless PFC circuit and a controller, the controller is configured to control the first control switch and the second control switch to be switched on in a preset battery self-heating state, and the bridgeless PFC circuit is configured to control the bridgeless PFC circuit to be switched off in the preset battery self-heating state. And the bridgeless PFC circuit and the power battery are charged or discharged by controlling the on-off of a switching tube in the bridgeless PFC circuit, so that the self-heating of the power battery is realized. Thus, under the condition that the electric vehicle is not in a charging state, charging and discharging between the electric vehicle and the power battery can be achieved at any time through the bridgeless PFC circuit, self-heating of the power battery is achieved on the premise that excessive cost does not need to be increased, and when the power battery is in any state except the charging state and heating is needed, self-heating of the power battery is achieved. And self-heating of the power battery is carried out in time, so that full utilization of the power battery and safety of the battery are ensured.

    本公开涉及一种电池自加热装置、方法及电动交通工具,包括第一控制开关、第二控制开关、无桥PFC电路和控制器,所述控制器在预设电池自加热状态下被配置为,控制所述第一控制开关和所述第二控制开关闭合,并通过控制所述无桥PFC电路中的开关管的开断,以使所述无桥PFC电路与所述动力电池之间进行充电或放电,进而实现动力电池的自加热。这样,在电动交通工具非处于充电状态的情况下,能够随时利用无桥PFC电路实现与动力电池之间的充放电,在无需增加过多成本的前提下实现动力电池的自加热,而且还能在动力电池处于除了充电状态之外的任意状态下,且有加热需求时,及时进行动力电池的自加热,从而保证了动力电池的充分利用和电池安全。


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    Title :

    Battery self-heating device and method and electric vehicle


    Additional title:

    电池自加热装置、方法及电动交通工具


    Contributors:
    LIAN YUBO (author) / LING HEPING (author) / LIU JUNHUA (author) / LAI JINFU (author) / WANG BIN (author)

    Publication date :

    2024-01-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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