Invention Grant
US09358892B1 System and method for pre-charging a hybrid vehicle for improving reverse driving performance 有权
为混合动力汽车预充电以提高逆向驾驶性能的系统和方法

System and method for pre-charging a hybrid vehicle for improving reverse driving performance
Abstract:
A method/system is provided for improving reverse hill climb performance of a hybrid vehicle. An electronic control unit (ECU) determines whether pre-charging is needed based on vehicle state and environmental conditions. This determination can be based on a grade value of a hill upon which the vehicle is positioned, a state of charge (SOC) of the battery, and/or the expected distance that the vehicle will travel uphill. The ECU sets a charging rate and a target charge value based on the foregoing data. The battery may be charged to have an SOC that exceeds an actual needed target charge value by a hysteresis margin. A message may be displayed requesting the driver to wait until pre-charging is complete. The engine charges the battery at the charging rate until the SOC reaches the target charge value. The driver is prompted that he or she can start reverse driving.
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