The invention relates to the technical field of electric control of electric vehicles, in particular to a control method for preventing over-temperature of a battery of an extended-range electric vehicle, which comprises the following steps: step S10, when the driving mode of the whole vehicle is EV, judging whether the temperature Tpattern of the battery is greater than or equal to a set value, and if so, executing step S60; step S60, the VCU judges that the actual over-temperature possibility exists in the battery, the VCU issues an APU starting instruction to the GCU, and the battery stops discharging; s70, the APU is started, the APU takes the main discharging role of the whole vehicle after being started, and high-power discharging of the battery is stopped; s80, after the over-temperature feed-forward control is activated, whether the battery temperature Tpattern is smaller than 50 DEG C or not is judged, the whole vehicle driving mode selected by a driver is EV or not, and if yes, the step S90 is executed; and S90, the VCU issues an APU closing instruction to the GCU, the GCU controls the APU to be closed, and the whole vehicle is controlled to continue pure electric driving, so that the problem of battery over-temperature possibly occurring in pure electric driving of the extended-range electric commercial vehicle in the high-temperature environment is effectively avoided, and the problem of personal and property loss is avoided.
本发明涉及电动汽车电控技术领域,具体地说,本发明涉及一种增程式电动汽车防止电池过温的控制方法,包括以下步骤:步骤S10,当整车的驱动模式为EV时,判断电池温度Tbattery是否大于等于设定值,若是则执行步骤S60;步骤S60,VCU判断电池存在实际过温可能,VCU向GCU下达启动APU指令,电池停止放电;步骤S70,APU启动,APU启动后承担整车主要放电角色,电池停止大功率放电;步骤S80,当过温前馈控制激活之后,判断电池温度Tbattery是否<50℃以下,且驾驶员选择的整车驱动模式为EV,若是则执行步骤S90;步骤S90,VCU向GCU下达关闭APU指令,GCU控制关闭APU,控制整车继续纯电行驶,有效规避高温环境下增程式电动商用车纯电行驶可能出现的电池过温问题,避免造成人身财产损失的问题。
Control method for preventing over-temperature of battery of extended-range electric vehicle
一种增程式电动汽车防止电池过温的控制方法
2024-01-05
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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