Direct-current charger detection system and method

Abstract

The invention discloses a DC charger detection system and method, and the system comprises a vehicle controller simulation device which simulates a vehicle BMS control system, and builds the message data interaction with a to-be-detected off-board charger through a CAN line in a charging gun; a vehicle fault state is simulated through each contact on the vehicle socket according to the received control instruction; a detection device acquires communication message data between the vehicle controller simulation device and the to-be-detected off-board charger, translates the message data into apredetermined format, analyzes the communication protocol consistency between the vehicle controller simulation device and the to-be-detected off-board charger according to a preset rule, acquires a communication protocol consistency analysis result and stores the communication protocol consistency analysis result; the waveform detection signals of all contacts and contactor signals or a front-endvoltage of the non-vehicle-mounted charger to be detected in the simulated vehicle fault state of all the contacts are collected, and an interoperation test detection result of the non-vehicle-mounted charger to be detected is obtained through a comparison result of a difference value between the waveform detection signal and the contactor signal or the front end voltage and a preset threshold value; and a main control computer outputs a control instruction.

Description

technical field [0001] The invention relates to the field of vehicle charging equipment detection, in particular to a DC charger detection system and method. Background technique [0002] Driven by relevant national policies, new energy electric vehicles are widely popularized, and the number of supporting basic charging facilities has also achieved rapid growth. In the process, many problems of poor charging compatibility and safety were highlighted, which put forward higher requirements for strict inspection quality. In addition, electric vehicle charging stations also need regular testing, which puts forward more urgent requirements for improving the automation level of testing equipment and the work efficiency of testing personnel. [0003] The traditional detection method of charging facilities requires many types of external devices and is complex, requiring manual wiring, which takes a long time, resulting in low detection efficiency and prone to miswiring, resulting...

AI Technical Summary

Problems solved by technology

[0003] The traditional detection method of charging facilities requires many and complex types of external devices, requires manual wiring, and takes a long time, resulting in low detection efficiency and prone to miswiring, resulting in personal injury and equipment damage

During the interoperability test, it is necessary to use an oscilloscope to manually capture the waveform of each test, which has poor stability and is greatly affected by human factors, so it is not suitable for on-site testing; during the communication protocol consistency test, an external CAN box is required to read the message. And there is no message translation function, and the messages must be translated one by one according to the standard, which seriously affects the detection efficiency

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