The invention belongs to the technical field of electric drive, and particularly relates to a battery pack auxiliary heating technology, and an electric drive auxiliary battery pack heating method comprises the following steps: detecting electric drive and whole vehicle parameters; the electric drive and the whole vehicle parameters are compared with set values; the heating output power of the current electric drive is adjusted according to the comparison result; wherein the IGBT temperature is used as a main reference object; by detecting the temperature of the IGBT and calculating the heating power in real time, the original single threshold switch control can be changed into dynamic temperature slope control, the output heating power of the active heating function is controlled according to the temperature of the IGBT, the dynamic balance and stability of heating are realized, the continuous activation state time of the function is prolonged, and the service life of the active heating function is prolonged. Therefore, the efficiency of the active heating function is improved, and the problems of voltage and current oscillation and NVH caused by frequent switching of the active heating function are reduced.
本发明属于电驱动技术领域,具体涉及一种电池包辅助加热技术,本电驱辅助电池包加热方法包括:检测电驱动及整车参数;将电驱动及整车参数与设定值对比;根据对比结果调整当前电驱的加热输出功率;其中IGBT温度作为主要参考对象;本发明通过对IGBT温度的检测及加热功率进行实时计算,能够将原有的单一阈值开关控制变为动态的温度斜率控制,根据IGBT温度对主动加热功能的输出加热功率进行控制,实现发热动态平衡稳定,增长功能持续激活状态时间,以提高主动加热功能的效率,同时减少了因主动加热功能频繁开关带来的电压、电流震荡以及NVH问题。
Electric drive auxiliary battery pack heating method
一种电驱辅助电池包加热方法
2023-12-08
Patent
Elektronische Ressource
Chinesisch
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