The invention discloses an energy control method for an extended-range electric vehicle. The method considers that the discharge capacity of a battery is limited in a low-temperature environment, and a power battery in a CD stage only depends on self power supply and cannot meet the power demand of the vehicle. According to the energy control method for the range-extended electric vehicle, when the electric power of the whole vehicle is higher than the maximum allowable discharge power of the battery, the range-extended system is started to assist the power battery to supply power to the whole vehicle, and the power performance of the whole vehicle and the accessory power demand are ensured. And in a low-temperature environment, in the power generation process of the range extending system, the heat of the system body and the heat of the exhaust system can accelerate the warming of the battery pack of the power battery, so that the battery pack recovers the normal-temperature large-current discharge capability as soon as possible.
本发明公开了一种增程式电动汽车能量控制方法,该方法考虑到低温环境下电池放电能力受限,处于CD阶段的动力电池仅靠自身供电无法满足车辆用电需求。本发明提供的增程式电动汽车能量控制方法,当整车用电功率高于电池允许最大放电功率时,启动增程系统辅助动力电池给整车供电,确保整车动力性和附件用电需求。并且在低温环境下,增程系统发电过程中,系统本体的热量和排气系统的热量可以加快动力电池的电池包暖包,使电池包尽快恢复常温大电流放电能力。
Energy control method for extended-range electric vehicle
增程式电动汽车能量控制方法
2024-05-03
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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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