Dynamic measurement method for high-voltage-wiring-harness collision impact parameters

Abstract

The invention relates to high-voltage-wiring-harness security testing, and particularly provides a dynamic measurement method for high-voltage-wiring-harness collision impact parameters. The dynamic measurement method aims at measuring dynamic change characteristics of insulation resistance of high-voltage wiring harnesses along with the impact force and the impact displacement in collision impact. The dynamic measurement method includes the steps that the high-voltage wiring harnesses and an impact module are selected; the selected high-voltage wiring harnesses are fixed on a test table and connected to a measurement device; the selected impact module and the high-voltage wiring harnesses fixed on the test table are adjacently put; a test stopping condition is set, and the test is stoppedwhen the test stopping condition is achieved; the impact module applies acting force to the high-voltage wiring harnesses; data in the process that the impact module applies the acting force to the high-voltage wiring harnesses is collected through the measurement device; the data collected by the measurement device is processed and stored. According to the dynamic measurement method for the high-voltage-wiring-harness collision impact parameters, dynamic change assessment of the insulation resistance of the high-voltage wiring harnesses in the collision impact process is achieved.

Description

technical field [0001] The invention relates to safety testing of high-voltage wire harnesses, in particular to a dynamic measurement method for collision impact parameters of high-voltage wire harnesses. Background technique [0002] In recent years, with the increasing number of new energy vehicles, their safety issues, especially passive safety issues, have also received increasing attention from the government, consumers and auto manufacturers. On October 1, 2015, my country officially began to implement GB / T31498 "Safety Requirements for Electric Vehicles After Collision", which made detailed requirements for the voltage, insulation resistance, electric energy and insulation protection of high-voltage circuits after collision. The high-voltage wiring harness is an important connecting part in the high-voltage circuit. If a short circuit or insulation failure occurs during a collision, it will directly affect the post-collision safety functions of the high-voltage circui...

AI Technical Summary

Problems solved by technology

Existing measurement methods for high-voltage wire harnesses are limited to static measurement of insulation resistance, and cannot evaluate the dynamic change of insulation resistance of high-voltage wire harnesses during collision and impact, and cannot judge the risk of insulation failure after impact force and impact displacement of high-voltage wire harnesses

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