High-voltage wiring harness conductivity automatic-testing device of electric vehicle

Abstract

The invention belongs to a high-voltage wiring harness conductivity automatic-testing device of an electric vehicle. High-voltage connector assemblies of the device are connected with high-voltage wiring harnesses. The high-voltage wiring harnesses are connected with a relay matrix through respective adapter wiring harnesses, and the relay matrix is controlled through an I / O port of a single chip microcomputer. A voltage value output by an A / D reading acquisition circuit inside the single chip microcomputer is utilized to judge the conductivity of terminals of the high-voltage connector assemblies of the high-voltage wiring harnesses according to an A / D acquisition value. The high-voltage wiring harness conductivity automatic-testing device is high in time response, small in size and low in power consumption and ensures test signal accuracy and the safety of testers while achieving functions. The high-voltage wiring harness conductivity automatic-testing device can judge the conductivity situation of the high-voltage connector assembly of the high-voltage wiring harness quickly, accurately and really, conductivity testing of the high-voltage connector assemblies of different high-voltage wiring harnesses can be completed only by designing corresponding adapter wiring harnesses on the basis that testing circuit board design is not changed, the device has the advantage of being high in universality, and the problem that the conductivity testing of the high-voltage connector assemblies of the high-voltage wiring harnesses is difficult is successively solved.

Description

technical field [0001] The invention belongs to a detection device for automobile equipment, in particular to an automatic test device for the continuity of a high-voltage wire harness of an electric vehicle. Background technique [0002] The electric vehicle high-voltage wiring harness acts as a connection bridge between the high-voltage control box and the high-voltage electrical appliance, and plays the role of electric energy transmission. Since there are many high-voltage electrical components connected to the high-voltage wire harness, there are many pin definitions. Therefore, it is necessary to detect whether there are problems or hidden dangers in the electrical connection of the high-voltage wire harness. [0003] Before the high-voltage wire harness products are put into the warehouse, the continuity test of each high-voltage connector connected by the wire harness should be carried out. Due to the large number of pins, the definitions are complicated, and there a...

AI Technical Summary

Problems solved by technology

The existing manual test requires manual wiring for each test, and defines the insertion line according to the pins, which is time-consuming and inconvenient

Due to the large number of pins, the manual operation time is long, and the detection results depend to a large extent on the technical level and work experience of the personnel

[0005] Most of the existing technologies use a multimeter to conduct a continuity test on the high-voltage wire harness one by one according to the definition of the pins of the high-voltage connectors connected to the high-voltage wire harness. Each test requires manual wiring and line inspection, which is time-consuming and inconvenient, and is prone to missing checks. , Mischeck phenomenon

Even if there are automatic continuity test devices, they are all special-purpose test equipment, which are not universal and difficult to meet the actual test needs, and the cost of test equipment is very high, which is difficult to use in actual production

[0006] The continuity test of high-voltage wiring harness has always had objective difficulties such as many test points and tight time requirements.

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