Method of determining voltage condition of fuel cell vehicle

Details Method of determining voltage condition of fuel cell vehicle Method of determining voltage condition of fuel cell vehicle

2005-06-01

2008-10-14

Laxton, Gary L (Department: 2838)

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

C701S022000, C318S108000

Reexamination Certificate

active

07436148

ABSTRACT:
A method of determining voltage conditions of a fuel cell vehicle which includes a motor as a driving force source of the vehicle, a motor control device for controlling operation of the motor, a fuel cell, to which a reaction gas is supplied, for generating electric power by an electrochemical reaction, and a battery device which is charged by the electric power generated by the fuel cell and sends and receives electrical energy to and from the motor by control of the motor control device. The method includes setting a voltage value, typically an average value, of an output voltage of the fuel cell within a range from a minimum value to a maximum value of an open circuit voltage of the battery device. Even when the fuel cell and the battery device are directly connected, overcharge or overdischarge can be prevented, thereby reducing frequency of voltage conversion.

REFERENCES:
patent: 6255008 (2001-07-01), Iwase
patent: 6580977 (2003-06-01), Ding et al.
patent: 2003/0111977 (2003-06-01), Pearson
patent: 11-067253 (1999-03-01), None
patent: 2001-204106 (2001-07-01), None

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