Module wire harness on-off test device, test method and module off-line test system

Abstract

The invention provides a module wire harness on-off test device and test method and belongs to the field of battery module test. The test device comprises a test circuit which is connected with a module wire harness of a module and is used for collecting static data of the module and collecting dynamic data of the module in a discharge state, wherein the programmable logic controller is connectedwith the test circuit and is used for controlling the test circuit to carry out static test and dynamic test on the module so as to obtain the static data and the dynamic data of the module; calculating the direct-current resistance of the module according to the dynamic data; the static data, the dynamic data and the direct-current resistance are outputted, and the static data, the dynamic data and the direct-current resistance are used for judging the on-off condition of the module wire harness. According to the test device, electric signals of the test circuit can be rapidly obtained, the test data can be rapidly read, and test speed and test efficiency are greatly improved.

Description

technical field [0001] The invention relates to the field of battery module testing, in particular to a module wiring harness on-off testing device, a module wiring harness on-off testing method and a module off-line testing system. Background technique [0002] The battery module in the automotive power battery system is a module composed of single batteries connected in series and parallel. The sampling harness of the module is used to collect the voltage and temperature of each single battery of the module and the temperature of the temperature monitoring point, and through the standard connector output. Poor contact or open circuit of the module wiring harness due to poor welding, poor terminal crimping, external force breaking, etc., resulting in loss of voltage and temperature points, resulting in the failure of the car to drive on the road or driving failures. Therefore, the continuity test of the module wiring harness is very important in the production process of t...

AI Technical Summary

Problems solved by technology

[0003] At present, the on-off test method of the module wiring harness mainly adopts manual wiring test, and testers need frequent wiring, and the test speed is slow and the efficiency is low

Due to the influence of personnel factors, it is easy to make mistakes in judgment, and the test accuracy is low, so welding quality problems such as false welding cannot be accurately detected

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