High voltage interlocking detection system for new energy automobile

Abstract

The invention relates to the new energy automobile safety protection field, and particularly to a high voltage interlocking detection system for high voltage parts of a new energy automobile. The detection system is connected to a high voltage line of the new energy automobile. The high voltage line includes the high voltage parts. The system includes high voltage connectors respectively connected to the high voltage parts, a high voltage interlocking detection part, a low voltage detection wiring harness, and an anti-failure resistor. The low voltage detection wiring harness is used for serially connecting all the high voltage connectors and the anti-failure resistor, wherein the different high voltage connectors are serially connected through the low voltage detection wiring harness; and an initiating terminal and an ending terminal of the low voltage detection wiring harness are all connected to the high voltage interlocking detection part. The high voltage interlocking detection part detects the connection states between the high voltage interlocking detection part, all the high voltage connectors, the low voltage detection wiring harness and the high voltage connectors through the low voltage detection wiring harness. Through the high voltage interlocking detection system for the new energy automobile, the effectiveness and robust of a high voltage interlocking detection circuit can be enhanced.

Description

technical field [0001] The invention relates to the field of safety protection of new energy vehicles, in particular to a high-voltage interlock detection system for high-voltage components of new energy vehicles. Background technique [0002] In recent years, new energy vehicles have developed rapidly. Compared with traditional vehicle powertrain systems, new energy vehicle powertrain systems contain more high-voltage and high-current components, such as motors and motor controllers, battery packs and battery pack controllers, High-voltage systems such as power distribution devices enable new energy vehicles to have the advantages of higher energy utilization and zero emissions, but they also bring greater safety hazards. [0003] In response to the above problems, most OEMs today use high-voltage interlock signals to monitor the connection status of high-voltage lines, and perform interlock detection on the connecting components corresponding to high-voltage components (he...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a high-voltage interlock detection system for high-voltage components of new energy vehicles to solve the problem that in the prior art, it is impossible to identify the failure states of the high-voltage interlock detection components themselves, low-voltage detection wiring harnesses and high-voltage connectors.

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