Vehicle electric power supply apparatus
A power supply device and power supply technology, which is applied to electrical devices, vehicle energy storage, vehicle components, etc., can solve the problem of inability to ensure and properly determine the generator to start the engine, etc., to prevent insufficient power supply and prevent output voltage from reducing. Effect
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[0037] Hereinafter, a power supply device for a vehicle according to an embodiment of the present invention will be described with reference to the drawings.
[0038]The vehicle power supply device 10 of the present embodiment is, for example, figure 1 It is mounted on the vehicle 1 as shown. The vehicle power supply device 10 includes at least a capacitor 11 (second power supply) as a rechargeable battery, a storage battery 12 (first power supply), a DC-DC converter 13, a controller 14 (control unit, idling stop unit), and a contactor 15 ( switch) and contactor relay 16 (switching part).
[0039] Vehicle 1 includes vehicle power supply unit 10, FI-ECU 17 (idling stop unit), starter solenoid switch (STMGSW) 18, starter relay 19, starter motor (STM) 20 (second electric load, electric motor), generator ( ACG) 21, internal combustion engine 22, electric load 23 (first electric load), ignition switch (IGSW) 24, first voltage sensor 25 (voltage detection section), second voltage ...
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