Electricity: single generator systems – With physical starting and/or stopping of the generator – Electric motor as driving means
Patent
1995-11-30
1998-09-15
Stephan, Steven L.
Electricity: single generator systems
With physical starting and/or stopping of the generator
Electric motor as driving means
322 28, 322 16, 320101, H02P 700
Patent
active
058084487
ABSTRACT:
The invention provides driving method and apparatus for an electric vehicle having a motor for driving the vehicle, a dc electric power source, a control device including a signal generating means for generating a signal to control rotation of the motor, and a key switch for controlling OFF-ON operation of the motor. The dc electric source includes a power battery (storage battery) connected to the motor and an energy battery (a fuel cell) connected in parallel with the power battery through an energy battery control switch. A battery current/voltage control unit controls the energy battery control switch based on the current or the voltage of the power battery, the energy battery or the motor, to maintain the voltage of the dc electric power source within a given range. A charging unit charges the power battery form the energy battery when the key switch is turned off, if the charge level of the power battery is below a given value, and stops charging if the charge level is above a given value.
REFERENCES:
patent: 4081693 (1978-03-01), Stone
patent: 4962462 (1990-10-01), Fekete
patent: 5631532 (1997-05-01), Azuma et al.
patent: 5650713 (1997-07-01), Takeuchi et al.
Hitachi , Ltd.
Ponomarenko Nicholas
Stephan Steven L.
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