The invention relates to a method and system for avoiding braking heat fade of a pure electric vehicle during heavy-load downhill, and belongs to the technical field of electric vehicles. According to the driving route input by the driver, the unit distance power consumption of the vehicle on the corresponding driving route and non-downhill road sections in the historical data and the recharging electric quantity returned and recovered by the vehicle on the downhill road sections through braking, the vehicle can reach the end point of the driving route. And reversely calculating the SOC of the power battery of the driving route starting point which ensures that the SOC of the power battery at any position of the downhill road section does not exceed a set upper limit from the end point of the driving route to the driving route starting point, and outputting the recommended SOC of the power battery as the driving route starting point. And the situation that the vehicle has no braking feedback electric quantity in a high SOC section is avoided, so that the problems of braking heat fade and braking failure caused by long-time mechanical braking are thoroughly solved, the driving safety of the vehicle is guaranteed, and the service life of the device is prolonged.
本发明涉及一种纯电动车重载下坡避免制动热衰退的方法及系统,属于电动汽车技术领域。根据驾驶员输入的行驶路线,根据历史数据中对应行驶路线上,非下坡路段的车辆单位距离耗电量,以及下坡路段车辆通过制动回馈回收的补电电量,保证车辆能够到达行驶路线终点的前提下,从行驶路线终点向行驶路线起点方向反推计算保证下坡路段任意位置动力电池SOC不超过设定上限的所述行驶路线起点的动力电池SOC,输出作为所述行驶路线起点的推荐动力电池SOC。避免车辆在高SOC段出现车辆无制动回馈电量的情况,从而彻底解决长时间的机械制动导致制动热衰退及刹车失灵的问题,保障车辆行驶安全及增加装置使用寿命。
Method and system for avoiding braking heat fade during heavy-load downhill of pure electric vehicle
一种纯电动车重载下坡避免制动热衰退的方法及系统
06.05.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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