APPARATUS AND METHOD FOR DETECTING RELAY FUSION OF ECO-FRIENDLY VEHICLE
First Claim
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1. An apparatus for detecting a relay fusion of an eco-friendly vehicle, comprising:
- a voltage sensor configured to sense a voltage of a first battery;
a relay configured to prevent an over-discharge of the first battery;
a converter configured to convert a high voltage of a second battery into a low voltage; and
a controller configured to adjust an output voltage of the converter to be equal to the voltage of the first battery, to set the converter to a regular operation mode and then turn off the relay, and to monitor a voltage change of the first battery while adjusting the output voltage of the converter to determine that the fusion does not occur when the voltage of the first battery is not changed and determine that the fusion occurs when the voltage of the first battery is changed.
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Abstract
An apparatus and a method for detecting a relay fusion of an eco-friendly vehicle are provided. The apparatus and method detect whether a relay for preventing an over-discharge of a lithium ion battery of 12V is fused, by ascertaining a voltage change of the lithium ion battery of 12V based on a variation of an output voltage of a low direct current (DC)-DC converter (LDC).
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Citations
17 Claims
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1. An apparatus for detecting a relay fusion of an eco-friendly vehicle, comprising:
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a voltage sensor configured to sense a voltage of a first battery; a relay configured to prevent an over-discharge of the first battery; a converter configured to convert a high voltage of a second battery into a low voltage; and a controller configured to adjust an output voltage of the converter to be equal to the voltage of the first battery, to set the converter to a regular operation mode and then turn off the relay, and to monitor a voltage change of the first battery while adjusting the output voltage of the converter to determine that the fusion does not occur when the voltage of the first battery is not changed and determine that the fusion occurs when the voltage of the first battery is changed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for detecting a relay fusion in an eco-friendly vehicle including a voltage sensor, a current sensor, a relay for preventing an over-discharge of a first battery, and a converter, the method comprising:
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adjusting, by a controller, an output voltage of the converter to be equal to a voltage of the first battery; setting, by the controller, the converter to a regular operation mode and then turning off the relay; monitoring, by the controller, a voltage change of the first battery while adjusting the output voltage of the converter, determining, by the controller, that the fusion does not occur when the voltage of the first battery is not changed; and determining, by the controller, that the fusion occurs when the voltage of the first battery is changed. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable medium containing program instructions executed by a controller for detecting a relay fusion in an eco-friendly vehicle including a voltage sensor, a current sensor, a relay for preventing an over-discharge of a first battery, and a converter, the computer readable medium comprising:
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program instructions that adjust an output voltage of the converter to be equal to a voltage of the first battery; program instructions that set the converter to a regular operation mode and then turning off the relay; program instructions that monitor a voltage change of the first battery while adjusting the output voltage of the converter, program instructions that determine that the fusion does not occur when the voltage of the first battery is not changed; and program instructions that determine that the fusion occurs when the voltage of the first battery is changed.
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Specification