The present disclosure provides a traction battery controller that provides fast and accurate state of charge conditions. A traction battery controller of an electrically powered vehicle dynamically selects an estimated gain based on operating conditions of the vehicle and controls the vehicle according to a state (e.g., state of charge (SOC)) of the traction battery estimated from an equivalent circuit model of the traction battery, the state of the traction battery depending on the estimated gain. Operating conditions of the vehicle may indicate on-board energy (OBE) or power demand of the vehicle. In operation, the controller (i) selects the estimated gain as a high estimated gain during a first operating condition of the vehicle, thereby estimating the battery state at an increased speed but with a lower accuracy than a nominal estimated gain, and (ii) selects the estimated gain as a low estimated gain during a second operating condition of the vehicle, thereby estimating the battery state at an increased speed but with a lower accuracy than the nominal estimated gain. The battery state is estimated with higher accuracy but at a reduced speed.
本公开提供了“提供快速且准确的荷电状态状况的牵引电池控制器”。电动化车辆的牵引电池控制器基于车辆的工况来动态地选择估计增益,并且根据从牵引电池的等效电路模型估计的牵引电池的状态(例如,荷电状态(SOC))来控制车辆,所述牵引电池的状态取决于估计增益。车辆的工况可以指示车辆的车载能量(OBE)或电力需求。在操作中,控制器(i)在车辆的第一工况期间将估计增益选择为高估计增益,由此与标称估计增益相比,以增加的速度但以较低的准确度估计电池状态,并且(ii)在车辆的第二工况期间将估计增益选择为低估计增益,由此与标称估计增益相比,以更高的准确度但以降低的速度估计电池状态。
Traction battery controller providing fast and accurate state of charge conditions
提供快速且准确的荷电状态状况的牵引电池控制器
2024-06-07
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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