The invention discloses a battery preheating method, system and device and an electric vehicle, and relates to the field of vehicle control. The method comprises the steps that under the condition that a whole vehicle is powered off, a battery management system is in a dormant state, a battery main switch is in an off state, and when an awakening signal sent by a time delay relay when preset heating time expires is received, the battery management system is converted into a working state from the dormant state; controlling a battery main switch to be closed according to the wake-up signal; and after the battery main switch is closed, preheating the battery according to the preheating duration. According to the method provided by the invention, quiescent current and leakage current are greatly reduced, too fast electric energy loss of a battery pack or a storage battery for supplying power to the devices is avoided, and components except a time-delay relay, a battery management system and a battery main switch do not participate in the whole preheating operation process; therefore, the loss of the electric energy of the battery pack is further reduced, and the practicability is high.

    本发明公开了一种电池预热的方法、系统、装置以及一种电动汽车,涉及车辆控制领域。所述方法包括:在整车下电的情况下,电池管理系统处于休眠状态,电池总闸开关处于断开状态,在接收到延时继电器在预定加热时间到期时发送的唤醒信号时,从休眠状态转为工作状态;根据唤醒信号,控制电池总闸开关闭合;在电池总闸开关闭合后,按照预热时长对电池进行预热操作。本发明提供的方法,极大的减小了静态电流以及漏电流,避免了为这些设备提供电源的电池包或者蓄电池的电能损耗过快,而整个预热操作过程中除延时继电器、电池管理系统以及电池总闸开关以外的元器件均不参与,这进一步减少了电池包电能的损耗,具有较高的实用性。


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    Title :

    Battery preheating method, system and device and electric vehicle


    Additional title:

    一种电池预热的方法、系统、装置以及一种电动汽车


    Contributors:
    LI CHANG (author) / DAI FENGCHI (author) / WANG JIE (author)

    Publication date :

    2022-06-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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