Power supply system and method for charging battery of vehicle
First Claim
1. A power supply system for charging a battery of a vehicle, comprising:
- a charger configured to charge the battery;
a charging controller configured to receive a voltage to charge the battery and to operate the charger;
an auxiliary battery configured to supply a first direct current (DC) voltage to operate the charging controller; and
a power supplier configured to generate a second DC voltage greater than the first DC voltage using external AC power, and to supply the second DC voltage to the charging controller as a driving power source to charge the battery,wherein first and second diodes are respectively installed at output ends of the power supplier and the auxiliary battery, a cathode voltage of the second diode is increased when the power supplier supplies the second DC voltage, and the first DC voltage of the auxiliary battery is blocked due to diode characteristics.
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Accused Products
Abstract
A power supply system and method for charging a battery of a vehicle are provided and include a charger that is configured to charge the battery and a charging controller that is configured to receive a voltage to charge the battery and operate the charger. An auxiliary battery is configured to supply a first DC voltage to operate the charging controller and a power supplier is configured to generate a second DC voltage greater than the first DC voltage using external AC power, and to supply the second DC voltage to the charging controller as a driving power source to charge the battery. First and second diodes are respectively installed at output ends of the power supplier and the auxiliary battery, a cathode voltage of the second diode is increased when the power supplier supplies the second DC voltage, and the first DC voltage of the auxiliary battery is blocked.
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Citations
14 Claims
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1. A power supply system for charging a battery of a vehicle, comprising:
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a charger configured to charge the battery; a charging controller configured to receive a voltage to charge the battery and to operate the charger; an auxiliary battery configured to supply a first direct current (DC) voltage to operate the charging controller; and a power supplier configured to generate a second DC voltage greater than the first DC voltage using external AC power, and to supply the second DC voltage to the charging controller as a driving power source to charge the battery, wherein first and second diodes are respectively installed at output ends of the power supplier and the auxiliary battery, a cathode voltage of the second diode is increased when the power supplier supplies the second DC voltage, and the first DC voltage of the auxiliary battery is blocked due to diode characteristics. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power supply method for charging a battery of a vehicle, the method comprising:
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turning on, by a controller, a power latch when a control pilot signal is generated based on the connection of electric vehicle service equipment; receiving, by the controller, a first direct current (DC) voltage from an auxiliary battery; receiving, by the controller, a second DC voltage as a driving power source greater than the first DC voltage generated using external AC power; and wherein the first DC voltage is blocked and controller receives the second DC voltage as a cathode voltage of a diode installed at the output end of the auxiliary battery is increased when the second DC voltage is applied. - View Dependent Claims (8, 9, 10)
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11. A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:
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program instructions that turn on a power latch when a control pilot signal is generated based on the connection of electric vehicle service equipment; program instructions that receive a first direct current (DC) voltage from an auxiliary battery; program instructions that receive a second DC voltage as a driving power source greater than the first DC voltage generated using external AC power; and wherein the first DC voltage is blocked and controller receives the second DC voltage as a cathode voltage of a diode installed at the output end of the auxiliary battery is increased when the second DC voltage is applied. - View Dependent Claims (12, 13, 14)
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Specification