Power supply control device

Details Power supply control device Power supply control device

2006-05-02

2009-08-11

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Vehicle mounted systems

C307S1320EA

Reexamination Certificate

active

07573150

ABSTRACT:
A control device determines that a system relay for precharging is welded when, after generation of a signal at the H level upon starting of a vehicle system to turn on only a cathode-side system relay, a precharge current is at least a reference value. When it is determined that the system relay for precharging is welded, the control device immediately turns off the cathode-side system relay without determining welding of cathode-side and anode-side system relays and performs discharging of a capacitor. In this situation, the control device determines welding of the cathode-side system relay based on a voltage between both ends of the capacitor. When it is determined that the system relay for precharging is not welded, welding of the cathode-side and anode-side system relays is determined upon termination of the vehicle system.

REFERENCES:
patent: 7368829 (2008-05-01), Tezuka
patent: 2002/0070608 (2002-06-01), Matsuki et al.
patent: A 2000-134707 (2000-05-01), None
patent: A 2004-303691 (2004-10-01), None
patent: 2199788 (2003-02-01), None

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