发明名称 |
EARTH FAULT DETECTION CIRCUIT AND POWER SOURCE DEVICE |
摘要 |
An earth fault detection circuit for detecting an earth fault between a high-voltage battery and a motor includes: an A.C. signal generation portion generating an A.C. signal; a first capacitive element between the A.C. signal generation portion and one end side of the high-voltage battery; a voltage dividing circuit dividing a voltage on the one end side of the high-voltage battery; an earth fault detection portion detecting the earth fault between the high-voltage battery and the motor based on an earth fault detection signal inputted thereto; and a second capacitive element inputting an A.C. component of the voltage, on the one end side of the high-voltage battery, which is obtained by the voltage division in the voltage dividing circuit as the earth fault detection signal to the earth fault detection portion. |
申请公布号 |
US2014049860(A1) |
申请公布日期 |
2014.02.20 |
申请号 |
US201313961402 |
申请日期 |
2013.08.07 |
申请人 |
HITACHI VEHICLE ENERGY, LTD. |
发明人 |
ARIMA TOMOYUKI;KUDO AKIHIKO |
分类号 |
G01R31/02;H02H3/16 |
主分类号 |
G01R31/02 |
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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