Electromobile and high-voltage device fault detection system and method for same

Abstract

The invention provides an electromobile and a high-voltage device fault detection system and method for the same. The high-voltage device fault detection system comprises multiple high-voltage devices respectively comprising respective high-voltage interlocking monitors, a low-voltage signal line, a battery management system or a vehicle control unit and an instrument, the low-voltage signal line is serially connected among the high-voltage interlocking monitors of the high-voltage devices, the battery management system or the vehicle control unit is connected with at least one of the high-voltage devices through a controller area network connecting line and used for receiving high-voltage interlocking state information provided by the high-voltage interlocking monitors of the high-voltage devices from the high-voltage devices, and the instrument is used for displaying the high-voltage interlocking state information. After high-voltage danger appears, when a user expects to detect and find out a position with high-voltage interlocking fault, the position with the fault can be quickly located through display of the instrument without checking high-voltage wiring harnesses and the high-voltage devices one by one, so that convenience is brought to quick maintenance.

Description

technical field [0001] The invention relates to the technical field of automobiles, and more specifically, to a high-voltage device fault detection system and method for an electric vehicle and the electric vehicle. Background technique [0002] Energy shortages, oil crises and environmental pollution are intensifying, which have a huge impact on people's lives and are directly related to the sustainable development of the country's economy and society. All countries in the world are actively developing new energy technologies. As a new energy vehicle with reduced oil consumption, low pollution, and low noise, electric vehicles are considered to be an important way to solve the energy crisis and environmental degradation. Hybrid vehicles take into account the advantages of pure electric vehicles and traditional internal combustion engine vehicles at the same time. On the premise of meeting the requirements of vehicle power and mileage, it effectively improves fuel economy a...

AI Technical Summary

Problems solved by technology

However, in the high-voltage system currently used, there is basically no fault detection circuit. When a high-voltage danger occurs, it is expected to detect and find out the location of the high-voltage interlock fault. It is necessary to check the high-voltage wiring harness and high-voltage components one by one, which will take a lot of time and effort. , which is inefficient and difficult to grasp

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