KR960019904A - Power cutoff device of car - Google Patents

Abstract

The present invention relates to a power supply device for supplying power to a vehicle by a battery, the first relay (RY1) for supplying power to the engine electrical device of the vehicle by driving the ignition switch, and the power supply of the battery and the first relay In a power supply of a vehicle having a second relay (RY2) for supplying the electric device of the body electric equipment, the second relay to cut off the power supply to all electric devices when the voltage of the battery is less than the predetermined vehicle starting voltage A first power control unit 10 to turn off the lamp; A second power supply control unit 20 which maintains a second relay in an on state to supply power to the electric device and the engine electric device of the vehicle electric equipment when the voltage of the battery is equal to or higher than a predetermined vehicle starting voltage; The resistor R1 is connected to the second relay and controls the flow of current to the first power control unit and the second power control unit, and thus, there is an advantage of preventing starting of the vehicle due to discharge of the battery.

Description

Power cutoff device of car

As this is a public information case, the full text was not included.

1 is a circuit diagram showing in detail the power cut-off device for a vehicle according to the present invention.

Claims (5)

The first relay RY1 having a normally open contact form for supplying power to the engine electric device of the vehicle by driving the ignition switch SW, and the power supply of the battery BAT are connected to the first relay RY1) and a power supply of a vehicle having a second relay (RY2) in the form of a normally closed contact for supplying an electric device of a vehicle electric equipment, wherein the voltage of the battery BAT is a predetermined vehicle. A first power control unit 10 for turning off the second relay RY2 to cut off power supply to all electric devices when the starting voltage is lower than the starting voltage; When the voltage of the battery BAT is more than a predetermined vehicle starting voltage, the second power control unit for holding the second relay (RY2) on to supply power to the electric device and the engine electric device of the vehicle body electrical equipment ( 20); And a resistor (R1) connected to the second relay (RY2) to control the flow of current to the first power control unit (10) and the second power control unit (20). . The method of claim 1, wherein the first power supply unit 10 is configured as a first switching means for opening the second relay (RY2) is turned on (ON) when the voltage of the battery is less than the vehicle starting voltage. Power cutoff device for cars. 3. The transistor according to claim 2, wherein the first switching means comprises a transistor Q1 having an emitter terminal connected to a base voltage, a base terminal connected to the resistor, and a collector terminal connected to the second relay RY2. Power cutoff device of the vehicle, characterized in that. 2. The Zener diode (D) of claim 1, wherein the second power supply control unit (20) is connected to the second relay (RY2) to have a vehicle starting voltage as a fixed voltage, and the voltage of the battery is a predetermined vehicle starting voltage. A power cut-off device for a vehicle, characterized in that it is composed of a second switching means that is turned on when it is abnormal. 5. The transistor of claim 4, wherein the second switching means comprises a transistor Q2 having an emitter terminal connected to a base voltage, a base terminal connected to a cathode of the zener diode D, and a collector terminal connected to the resistor. Power cutoff device of the vehicle, characterized in that. ※ Note: The disclosure is based on the initial application.