High-voltage interlock detection device and electric vehicle equipped with the high-voltage interlock detection device

Abstract

The invention provides a high-voltage interlock detection device and an electric vehicle with the high-voltage interlock detection device. The high-voltage interlock detection device includes a main controller and at least one detection module connected in series with the main controller; the detection module includes: DUT, high-voltage unit; the main controller sends at least two first low-voltage differential signals to the detection module, transmits them to the high-voltage unit through the DUT, returns to the DUT through the high-voltage unit, and returns a second low-voltage signal The differential signal is sent to the main controller; the main controller receives the second low-voltage differential signal, and judges whether the first low-voltage differential signal is consistent with the second low-voltage differential signal, so as to detect whether the device under test is disconnected from the high-voltage unit. The high-voltage interlock detection device of the present invention adopts a differential communication mode, has a long transmission distance, and has strong anti-interference ability, and can be distributed in various controllers of the whole vehicle without being affected by the length of the wiring harness.

Description

Technical field [0001] The present invention relates to the field of new energy vehicles, and more particularly to high-pressure interlock detecting devices and electric vehicles having the high pressure interlock detecting device. Background technique [0002] In recent years, with the rapid growth of social economy, energy and environmental protection problems have become increasingly prominent, and countries around the world will gradually turn their attention to new energy vehicles and energy saving. Today, new energy cars have become a highland of major cars, and China's new energy car ownership is also increasing. With the development of new energy automobile technology, people's intelligence and security of new energy vehicles have also put forward higher and high requirements for new energy vehicles. [0003] As an example of electric vehicles, an important feature of electric vehicles is an important feature of electric vehicles, including high-pressure systems that ensu...

AI Technical Summary

Problems solved by technology

A big problem with such a solution is that the wiring harness on the overly long loop will produce a large voltage drop, which will affect the readback voltage value and thus affect the judgment

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