发明名称 |
Electric vehicle control system |
摘要 |
An electric vehicle control system which maintains good driving performance under normal conditions, and can cut off driving current upon malfunction of a microcomputer before restarting. A setting circuit of a comparing and operating circuit has a set signal fixed to V2 if an accelerator pedal is released. If a microcomputer malfunctions to drive an inverter absent a depression of the accelerator pedal, a current flows from a battery and a battery current sensor generates an output signal n. If this value exceeds V2, a comparator is turned on, which also turns on a transistor to energize a relay and disconnects an inverter drive signal s to break the power supply from an inverter to the ac motor. Upon disconnection, an alarm lamp is lit to issue an alarm to the driver. The disconnection is held by a delay circuit until the power is reset.
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申请公布号 |
US5631796(A) |
申请公布日期 |
1997.05.20 |
申请号 |
US19950552438 |
申请日期 |
1995.11.03 |
申请人 |
HITACHI, LTD.;HITACHI AUTOMOTIVE ENGINEERING CO. LTD. |
发明人 |
YOSHIHARA, SHIGEYUKI;OBARA, SANSHIRO;MATSUDAIRA, NOBUNORI;NAITO, SHOTARO |
分类号 |
B60L3/00;B60L3/04;B60L9/18;B60L15/20;(IPC1-7):H02H3/18 |
主分类号 |
B60L3/00 |
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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