Test system for high-power automobile group DC charging unit and test method

Abstract

The present invention discloses a test system for a high-power automobile group DC charging unit and a test method. The test system includes a main control unit and an upper computer and an auxiliarycontrol unit respectively connected with the main control unit. The auxiliary controller is connected with a DC charging unit through a control line. Test content of the DC charging unit is configuredby the upper computer. According to the configured test content, the main control unit sends corresponding test control instructions to the DC charging unit through the auxiliary controller while receiving test information fed back by the DC charging unit; and the functions of testing a CAN line of the DC charging unit, testing and analyzing message protocol and testing a magnetic latching relaypath are realized. The invention can realize comprehensive test and analysis of the circuit function and software function of the DC charging unit, can separately test and analyze each module of the DC charging unit, and can be also extended to the unit test and analysis of other corresponding modules.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a high-power group charging DC charging unit testing system and testing method. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] After years of development of electric vehicle charging technology, the requirements for the charging voltage and charging current of electric vehicle charging equipment are getting higher and higher. In order to meet the charging requirements and make more reasonable use of more charging modules, a high-power group charging system is designed. The high-power group charging system can realize more efficient utilization of the charging module, and maximize the collection of current to the bus of the group charging system. The DC charging unit (DCU, hereinafter referred to as "DCU unit") plays a key ro...

AI Technical Summary

Problems solved by technology

[0005] The inventor found that the current test of the DCU unit is only to check whether the corresponding wiring is correct, or to install the DCU unit into the corresponding electric vehicle charging pile to complete a charging function. Evaluation; and this method can only be tested in a specific system, and cannot achieve boundary value testing (testing whether the requirements are met when the charging voltage value is within the boundary range or just beyond the boundary), full-range testing (testing in the value When all the charging voltage values ​​within the range meet the requirements), it does not provide analysis on the performance of the product

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