High voltage interlock circuit and detection method thereof

US11413965B2 · kind B2 · utility

Assignee

• CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED · CN

Inventors

• Yanhui Fu · Jiaocheng District, CN
• Guoxiu Wu · Jiaocheng District, CN
• Baohai Du · Jiaocheng District, CN
• Changjian Liu · Jiaocheng District, CN

Key dates

• Filing date: Sep 23, 2021
• Grant date: Aug 16, 2022
• Expiry date: Sep 23, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/70
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The application discloses a high voltage interlock circuit and a detection method thereof. The circuit comprises: a first switching module; a second switching module, comprising a first driving unit and a first switching unit arranged in isolation, the first switching unit is arranged between a second power supply and a second power ground; a third switching module, comprising a second driving unit and a second switching unit arranged in isolation; a fourth switching module, arranged between the fourth power supply and the first power ground; a controller. The embodiments of the application improve the accuracy of fault detection.