Driving control device and method for electric vehicle and...

Details Driving control device and method for electric vehicle and... Driving control device and method for electric vehicle and...

2007-06-05

2007-06-05

Laxton, Gary L. (Department: 2838)

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

C318S609000, C180S065230

Reexamination Certificate

active

10321610

ABSTRACT:
A driving control device for an electric vehicle includes an electric machine which is driven by a current supplied from a battery, a transmission which is coupled with the electric machine and performs shifting at a predetermined gear ratio, a charging state detecting portion which detects an electric variable that shows a charging state of the battery, a fail determination processing device which determines whether the electric variable exceeds a threshold value and makes a fail determination when the electric variable exceeds the threshold value, and a charging control processing device which decreases a rotational speed of the electric machine and reduces the electric variable when the fail determination is made. The fail determination is made to decrease the rotational speed of the electric machine when field weakening control becomes unperformable and the electric variable exceeds the threshold value, which makes it possible to prevent an overcurrent from being supplied to the battery.

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