Electrical connection system for vehicle
First Claim
Patent Images
1. An electrical connection system for a vehicle, comprising:
- a voltage converter including an input terminal connected to a first power supply line to supply a first voltage for converting the first voltage into a second voltage to be output to first vehicle-mounted loads through a second power supply line;
a first voltage supplier branched from the first power supply line for supplying the first voltage to each of second vehicle-mounted loads;
fuses provided respectively to the second vehicle-mounted loads between the voltage converter and each of the second vehicle-mounted loads on the second power supply line;
a switch provided between the voltage converter and the fuses, with a terminal connected to the second power supply line, and with another terminal connected to a ground terminal;
a voltage detector provided between the voltage converter and the fuses for detecting a voltage to be supplied to the second power supply line;
an overvoltage protector configured to turn on the switch to connect the second power supply line to the ground terminal when the overvoltage protector decides an overvoltage to occur on the second power supply line due to occurring a short circuit between the first power supply line and the second power supply line at a vehicle-mounted load, based on a voltage to be detected by the voltage detector.
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Abstract
The electrical connection system includes a power source circuit for outputting a first voltage to operate a first load circuit. The power source circuit includes a conversion circuit for converting the first voltage into a second voltage lower than the first voltage. The system includes a second load circuit operative in response to the second voltage. The system includes a protection circuit for shunting the second load circuit with a threshold voltage between the first voltage and second voltage. The threshold voltage has identical influence on the second load circuit relative to the first voltage.
6 Citations
8 Claims
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1. An electrical connection system for a vehicle, comprising:
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a voltage converter including an input terminal connected to a first power supply line to supply a first voltage for converting the first voltage into a second voltage to be output to first vehicle-mounted loads through a second power supply line;
a first voltage supplier branched from the first power supply line for supplying the first voltage to each of second vehicle-mounted loads;
fuses provided respectively to the second vehicle-mounted loads between the voltage converter and each of the second vehicle-mounted loads on the second power supply line;
a switch provided between the voltage converter and the fuses, with a terminal connected to the second power supply line, and with another terminal connected to a ground terminal;
a voltage detector provided between the voltage converter and the fuses for detecting a voltage to be supplied to the second power supply line;
an overvoltage protector configured to turn on the switch to connect the second power supply line to the ground terminal when the overvoltage protector decides an overvoltage to occur on the second power supply line due to occurring a short circuit between the first power supply line and the second power supply line at a vehicle-mounted load, based on a voltage to be detected by the voltage detector. - View Dependent Claims (2, 3)
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4. An electrical connection system, comprising:
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a power source circuit for outputting a first voltage to operate a first load circuit, the power source circuit including a conversion circuit for converting the first voltage into a second voltage lower than the first voltage;
a second load circuit operative in response to the second voltage; and
a protection circuit for shunting the second load circuit over a threshold voltage between the first voltage and second voltage, the threshold voltage having identical influence on the second load circuit relative to the first voltage. - View Dependent Claims (5, 6, 7, 8)
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Specification