The invention discloses a low-electric-quantity energy control method for an electric vehicle, which has the main design concept that on the basis of limiting the driving power of a driving motor by a VCU (Vehicle Control Unit) of the whole vehicle and closing high-voltage accessories such as an electric compressor and a PTC (Positive Temperature Coefficient) when the whole vehicle is in a low-electric-quantity state, an SOC (State of Charge) threshold value related to energy recovery is additionally arranged; and carrying out refined driving motor driving power limitation and high-voltage accessory start-stop control on different SOC states and various specific driving working conditions. According to the invention, the dynamic property and the smoothness of the whole vehicle when the SOC is in the SOC1 are effectively improved, the riding comfort of the whole vehicle when the SOC is in the SOC2 is improved, and meanwhile, the energy loss is also obviously reduced, so that the effect of increasing the endurance mileage is also achieved.
本发明公开了一种电动汽车低电量能量控制方法,本发明的主要设计构思在于,在整车处于低电量时进行整车VCU限制驱动电机驱动功率和关闭电动压缩机和PTC等高压附件的基础上,通过额外增设一个与能量回收相关的SOC阈值,对不同SOC状态及多种特定行驶工况执行细化的驱动电机驱动功率限制与高压附件的启停控制。本发明有效改善了当SOC处于SOC1时的整车动力性和平顺性,并提升了当SOC处于SOC2时的整车乘坐舒适性,同时还显著减少了能量损失,从而也起到增加续航里程的效果。
Low-electric-quantity energy control method for electric automobile
电动汽车低电量能量控制方法
2024-02-20
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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