The invention provides a control method for an extended-range electric vehicle in a low-temperature and low-battery discharge power scene. The method comprises the steps that the warming-up time of the range extender is determined according to the temperature of cooling liquid of the range extender, and an engine in the range extender is controlled to conduct warming-up circulation at a preset rotating speed according to the warming-up time; after the warm-up circulation is finished, the power generation power of a range extender is determined according to the temperature of the cooling liquid and the speed of the range-extended electric vehicle, and the range extender is controlled to generate power according to the power generation power; after the electricity utilization power of a non-driving electric appliance in the extended-range electric vehicle is limited and energy recovery is carried out according to the maximum energy recovery power allowed by the extended-range electric vehicle, the latest driving power output by a battery of the extended-range electric vehicle is determined; according to the generated power of the range extender and the latest driving power output by the battery, the maximum speed of the range-extended electric vehicle capable of being stably driven in the low-temperature and low-battery discharge power scene is calculated, and the range-extended electric vehicle is controlled to run according to the maximum speed.
本申请提供了一种低温低电池放电功率场景下增程式电动汽车的控制方法。该方法包括:根据增程器的冷却液温度确定增程器的暖机时间,按照暖机时间控制增程器中的发动机以预设转速进行暖机循环;在结束暖机循环后,根据冷却液温度和增程式电动汽车的车速确定增程器的发电功率,并按照发电功率控制增程器进行发电;在限制增程式电动汽车中非驱动电器的用电功率以及按照增程式电动汽车允许的最大能量回收功率进行能量回收之后,确定增程式电动汽车的电池输出的最新的驱动功率;根据增程器的发电功率和电池输出的最新的驱动功率计算增程式电动汽车在低温低电池放电功率场景中可以稳定驱动的最高车速,按照最高车速控制增程式电动汽车行驶。
Control method of extended-range electric vehicle under low-temperature and low-battery discharge power scene
低温低电池放电功率场景下增程式电动汽车的控制方法
2023-08-11
Patent
Elektronische Ressource
Chinesisch
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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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