Power supply apparatus and control method thereof
First Claim
1. A power supply apparatus, which comprises a load, an outside power source to supply the load with a power voltage and a switch electrically connected between the load and the outside power source, the power supply apparatus further comprising:
- a temperature detector unit configured to detect a temperature of the load;
a dry contact point unit having a relay, which is electrically connected between the load and the switch, and configured to activate a contact point of the relay before the power voltage is applied to the load;
a control unit configured to turn on the switch according to a power supply command from outside of the power supply apparatus that is input to the control unit from outside the power supply apparatus and configured to control an on/off of the switch according to the detected temperature of the load;
a comparator unit configured to compare the detected temperature of the load with a reference temperature that is set in advance; and
a memory unit configured to store a temperature table, which enables the control unit to trace the detected temperature of the load, and information on at least one of a first error state, a second error state, a third error state, and a fourth error state, classified by the load'"'"'s temperature, a variation of the load'"'"'s temperature, and intensity of the power voltage,whereinone of the control unit and the comparator unit is configured to determine whether at least one element in the power supply apparatus is broken based on the at least one of the first error state, the second error state, the third error state, and the fourth error state, and to output a signal to inactivate the contact point of the relay based on the determination.
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Accused Products
Abstract
A power supply apparatus, which includes a load, an outside power source to supply the load with a power voltage and a switch electrically connected between the load and the outside power source, including a temperature detector unit configured to detect a temperature of the load, a no-power contact point unit provided with a relay, which is electrically connected between the load and the switch, and configured to activate a contact point of the relay before the power voltage is applied to the load, and a control unit configured to turn on the switch according to a power supply command that is input from an outside and configured to control an on/off of the switch according to the temperature of the load detected.
7 Citations
21 Claims
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1. A power supply apparatus, which comprises a load, an outside power source to supply the load with a power voltage and a switch electrically connected between the load and the outside power source, the power supply apparatus further comprising:
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a temperature detector unit configured to detect a temperature of the load; a dry contact point unit having a relay, which is electrically connected between the load and the switch, and configured to activate a contact point of the relay before the power voltage is applied to the load; a control unit configured to turn on the switch according to a power supply command from outside of the power supply apparatus that is input to the control unit from outside the power supply apparatus and configured to control an on/off of the switch according to the detected temperature of the load; a comparator unit configured to compare the detected temperature of the load with a reference temperature that is set in advance; and a memory unit configured to store a temperature table, which enables the control unit to trace the detected temperature of the load, and information on at least one of a first error state, a second error state, a third error state, and a fourth error state, classified by the load'"'"'s temperature, a variation of the load'"'"'s temperature, and intensity of the power voltage, wherein one of the control unit and the comparator unit is configured to determine whether at least one element in the power supply apparatus is broken based on the at least one of the first error state, the second error state, the third error state, and the fourth error state, and to output a signal to inactivate the contact point of the relay based on the determination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling a power supply apparatus, which comprises a load, an outside power source to supply the load with a power voltage, a switch electrically connected between the load and the outside power source, a temperature detector unit configured to detect a temperature of the load, and a dry contact point unit provided with a relay, which is electrically connected between the load and the switch, and a memory unit configured to store a temperature table, which enables the control unit to trace the detected temperature of the load, and information on at least one of a first error state, a second error state, a third error state, and a fourth error state, classified by the load'"'"'s temperature, a variation of the load'"'"'s temperature, and intensity of the power voltage, the method comprising:
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at the dry contact point unit, activating a contact point of the relay before the power voltage is applied to the load; at a control unit, turning on the switch according to a power supply command from outside of the power supply apparatus that is input to the control unit from outside the power supply apparatus; at the control unit, controlling an on/off of the switch according to the detected temperature of the load. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A power supply apparatus, comprising:
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a switch electrically connected between a load and an outside power source; a temperature detector configured to detect a temperature of the load; a dry contact point unit having a relay, which is electrically connected between the load and the switch, and configured to activate a contact point of the relay before power is applied to the load; a control unit, receiving a power supply command from outside of the power supply apparatus, configured to turn on the switch in response to the power supply command, and configured to control an on/off of the switch according to the temperature of the load detected; a comparator unit configured to compare the detected temperature of the load with a reference temperature that is set in advance; and a memory unit configured to store a temperature table, which enables the control unit to trace the detected temperature of the load, and information on at least one of a first error state, a second error state, a third error state, and a fourth error state, classified by the load'"'"'s temperature, a variation of the load'"'"'s temperature, and intensity of the power voltage, wherein the comparator unit outputs a signal to activate the contact point of the relay if the detected temperature of the load is lower than the reference temperature, and the dry contact point unit activates or inactivates the contact point of the relay according to the output of the comparator unit, and one of the control unit and the comparator unit is configured to determine whether at least one element in the power supply apparatus is broken based on the at least one of the first error state, the second error state, the third error state, and the fourth error state, and to output a signal to inactivate the contact point of the relay based on the determination, and the dry contact point unit inactivates the contact point of the relay according to one of the output of the comparator unit and the output of the control unit.
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Specification