METHOD AND SYSTEM FOR DETECTING RELAY ADHESION |
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| 申请号 | US15958284 | 申请日 | 2018-04-20 | 公开(公告)号 | US20180315568A1 | 公开(公告)日 | 2018-11-01 |
| 申请人 | Contemporary Amperex Technology Co., Limited; | 发明人 | Fei ZHAO; Xing WU; DeQing CHEN; | ||||
| 摘要 | A method and a system for detecting an adhesion of a relay are disclosed. In a high voltage circuit, a voltage is measured across a load multiple times within a specified time period when a first relay and a second relay are open and a third relay is closed, where the second relay may be a main negative relay of the high voltage circuit. The second relay is declared to have an adhesion malfunction when a change in the value of the measured load voltage satisfies a specified condition. Using the change in the sampled load voltages external to the main negative relay, the adhesion malfunction of the main negative relay may be diagnosed, so that corrective action may be taken. The potential safety hazard caused by the adhesion malfunction of the main negative relay may be prevented, such as may occur in an electric vehicle high voltage circuit. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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