The invention discloses a hybrid electric vehicle engine start-stop control method and system, a hybrid electric vehicle and a storage medium. The hybrid electric vehicle engine start-stop control method comprises the steps that S1, parameters needed for calculating predicted power are obtained; s2, calculating predicted power according to the parameters obtained in the step S1; s3, judging whether the battery discharge power emitted by the power control unit is less than or equal to the predicted power, if so, entering S4, and otherwise, ending the process; s4, requesting and controlling the engine to start; s5, setting an engine working point according to the required power and the vehicle speed; s6, an engine charging SOC threshold value is set according to the required power and the vehicle speed; s7, determining whether the engine is stopped or not according to whether the SOC of the battery reaches the charging threshold value or not, the current required power and the vehicle speed or not, if the stopping condition is met, entering S8, and if the stopping condition is not met, returning to S5; and S8, requesting and controlling the engine to stop. According to the invention, the problems of smoothness and dynamic property of switching between the EV mode and the HEV mode of the hybrid electric vehicle are solved.

    本发明公开了一种混动车发动机起停控制方法、系统、混动车及存储介质,包括:S1、获取计算预测功率所需参数;S2、根据S1获取的参数进行预测功率的计算;S3、判断动力控制单元发出的电池放电功率是否小于等于预测功率,若是,则进入S4,否则流程结束;S4、请求并控制发动机起动;S5、根据需求功率、车速设置发动机工作点;S6、根据需求功率、车速设置发动机充电SOC阈值;S7、根据电池SOC是否达到充电阈值、当期需求功率及车速,确定发动机是否停机,若满足停机条件,则进入S8,若不满足停机条件,则返回S5;S8、请求并控制发动机停机。本发明解决了混动车EV模式、HEV模式切换的平顺性、动力性问题。


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    Title :

    Hybrid vehicle engine start-stop control method and system, hybrid vehicle and storage medium


    Additional title:

    混动车发动机起停控制方法、系统、混动车及存储介质


    Contributors:
    WANG HAI (author) / XUE YAFEI (author) / LIAN LONGFEI (author) / HU QUN (author)

    Publication date :

    2023-05-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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