The invention relates to the field of extended-range electric vehicle control, in particular to an optimized control method for avoiding overcharge of a battery of an extended-range electric vehicle, which comprises the following steps: 1, high voltage is applied to the whole vehicle, the power generation power of an APU is judged, 2, the power generation state of the APU is judged, a battery power limit adjustment curve is independently set according to the working condition of the APU in the power generation process, and the battery overcharge is avoided. Different derating adjustment curves are set for battery overcharge caused by non-APU power generation; when the VCU recovers the available power limit of the battery, the recovery limit is independently set, 3, the initial value of the available charging power of the battery is obtained, preprocessed and used for battery overcharge control, 4, whether the generated power required by the APU and calculated by the VCU is smaller than 0.8 KW or not is judged, if the generated power is smaller than 0.8 KW, the generated power is not requested, and if the generated power is smaller than 0.8 KW, the recovery limit is set independently; the problem that battery overcharge is further aggravated and is more serious due to the fact that the APU controls the generator to apply the negative torque due to the fact that the generated power change response controlled by the APU is lagged is solved.

    本发明涉及增程式电动汽车控制领域,具体地说,本发明涉及增程式电动汽车避免电池过充的优化控制方法,包括以下步骤:1、整车上高压,判断APU的发电功率,2、判断APU的发电状态,针对APU处于发电时的工况,单独设定电池功率限制调整曲线,对于非APU发电导致的电池过充,设置不同的降额调整曲线;对于VCU恢复电池的可用功率额度时,也单独设定恢复额度,3、得到电池可用充电功率初值并对其进行预处理,将其用于电池过充控制,4、判断VCU计算的APU需求发电功率是否小于0.8KW,小于0.8kW的发电功率请求不请求发电功率,解决了由于APU控制的发电功率变化响应滞后,APU会控制发电机施加负扭矩导致电池过充进一步加剧,电池过充更为严重的问题。


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    Titel :

    Optimization control method for avoiding overcharge of battery of extended-range electric vehicle


    Weitere Titelangaben:

    一种增程式电动汽车避免电池过充的优化控制方法


    Beteiligte:
    ZHANG YA'NAN (Autor:in) / HE FENG (Autor:in) / XU LICHENG (Autor:in)

    Erscheinungsdatum :

    30.08.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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