发明名称 |
Vehicle battery charger and a fault diagnosis of relay |
摘要 |
A vehicle battery charger for providing a charging current to a rechargeable vehicle battery which stores electric traction power includes a relay for interrupting the charging current, and fault diagnosing means for switching an operating condition of the relay to thereby diagnose a fault in the relay. At a time of starting and/or stopping a supply of the charging current, if a given condition is satisfied, the fault diagnosing means executes a diagnosis of the fault, or if the given condition is not satisfied, the fault diagnosing means does not execute a diagnosis of the fault. |
申请公布号 |
US9352662(B2) |
申请公布日期 |
2016.05.31 |
申请号 |
US201414149588 |
申请日期 |
2014.01.07 |
申请人 |
HITACHI METALS, LTD. |
发明人 |
Kaneyasu Masayoshi;Kai Takafumi;Yanagisawa Hiroyuki;Ito Hiroyuki |
分类号 |
H02J7/00;B60L11/18;B60L3/00;B60L3/04 |
主分类号 |
H02J7/00 |
代理机构 |
McGinn IP Law Group, PLLC |
代理人 |
McGinn IP Law Group, PLLC |
主权项 |
1. A vehicle battery charger for providing a charging current to a rechargeable vehicle battery which stores electric traction power, comprising:
a relay for interrupting the charging current, fault diagnosing means for switching an operating condition of the relay to thereby diagnose a fault in the relay, wherein at a time of starting and/or stopping a supply of the charging current, if a given condition is satisfied, the fault diagnosing means executes a diagnosis of the fault, or if the given condition is not satisfied, the fault diagnosing means does not execute a diagnosis of the fault, wherein the given condition is that history information on an operating condition of the vehicle battery charger satisfies a predetermined condition, and wherein the given condition is that an integrated value for the charging current from a time of a preceding diagnosis execution based on the history information is not less than a given threshold. |
地址 |
Tokyo JP |