Vehicle generator controller

Details Vehicle generator controller Vehicle generator controller

1997-11-26

1999-03-23

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

322 28, H02J 714

Patent

active

058865004

ABSTRACT:
A vehicle generator controller comprises a voltage detection circuit for outputting a voltage detection signal D to regulate a generated voltage VG in accordance with a battery voltage VB, a gradual increase control circuit for outputting a gradual increase control signal E in response to the voltage detection signal D and a switching element for intermittently controlling a field voltage in response to the gradual increase control signal E, the gradual increase control circuit includes a smoothing circuit for smoothing the voltage detection signal D by a charging time constant and a discharging time constant and a comparator for outputting the gradual increase control signal E by comparing the smoothing signal with a triangle voltage, both the charging time constant and the discharging time constant of the smoothing circuit are set to one second or more and the gradual increase control signal E moves to a waveform for gradually decreasing the field voltage when the battery voltage increases. With this arrangement, the vehicle generator controller suppresses a torque shock when an electric load is turned on as well as suppresses the drop of a battery voltage when the electric load is repeatedly turned on.

REFERENCES:
patent: 4680529 (1987-07-01), Komurasaki et al.
patent: 4839576 (1989-06-01), Kaneyuki et al.
patent: 5140253 (1992-08-01), Itoh
patent: 5144220 (1992-09-01), Iwatani et al.
patent: 5157321 (1992-10-01), Kato et al.
patent: 5225764 (1993-07-01), Falater
patent: 5231344 (1993-07-01), Marumoto et al.
patent: 5243270 (1993-09-01), Mayumi et al.

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