发明名称 |
POWER SUPPLY DEVICE AND METHOD FOR MAKING DECISION AS TO CONTACTOR WELD OF POWER SUPPLY DEVICE |
摘要 |
A power supply device includes: a power supply; a first contactor and a second contactor that are connected between the power supply and a load; a voltage detection circuit that detects a voltage between a load side of the first contactor and a power supply side of the second contactor; and a control unit that sets the contactors to an open/closed state. In a state in which electrical power has not been supplied to the load, a voltage which is greater than zero and less than a voltage at the power supply is applied between a positive electrode and a negative electrode on the load side; and after controlling the contactors to an open state, the control unit makes a decision as to whether or not one of the contactors is welded based upon detection results of the voltage detection circuit.
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申请公布号 |
US2011084704(A1) |
申请公布日期 |
2011.04.14 |
申请号 |
US20100862221 |
申请日期 |
2010.08.24 |
申请人 |
MYOEN KOHEI;YAMAI HIROYUKI |
发明人 |
MYOEN KOHEI;YAMAI HIROYUKI |
分类号 |
G01R31/04 |
主分类号 |
G01R31/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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