The invention discloses an electric vehicle water pump control method and system. The method specifically comprises the following steps: determining the duty ratio of a control signal for driving a water pump based on the highest temperature value of a circulating waterway cooling part when a whole vehicle is in an ON/START/CHARGE mode; and when the whole vehicle is in an AfterRun mode, determining the working duration of the AfterRun mode and the duty ratio of the water pump control signal under each working duration based on the duty ratio of the control signal at the moment of entering theAfterRun mode. According to different power supply modes, the water pump is divided into a normal mode and the AfterRun mode to be controlled, so that the economy and the safety are greatly improved.

    本发明公开了一种电动汽车水泵控制方法及系统,该方法具体包括如下步骤:整车处于ON/START/CHARGE模式时,基于循环水路冷却部件的最高温度值来确定驱动水泵的控制信号占空比;整车处于AfterRun模式时,基于进入AfterRun模式时刻的控制信号占空比来确定AfterRun模式的工作时长及各工作时长下的水泵控制信号占空比。根据电源模式的不同,将水泵分为正常模式和AfterRun两种进行控制,大大提高了经济性和安全性。


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    Title :

    Electric vehicle water pump control method and system


    Additional title:

    一种电动汽车水泵控制方法及系统


    Contributors:
    ZENG BIN (author) / GUO JUN (author) / LI GUO (author) / TAN HAIJUN (author) / LUO XIAOJUN (author)

    Publication date :

    2020-09-22


    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 / F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / G01K MEASURING TEMPERATURE , Messen der Temperatur



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