A bidirectional testing system and method for electric vehicle BMS and DC charging pile

Abstract

The invention discloses a bidirectional test system for an electric vehicle BMS and a direct-current charging pile, which comprises a direct-current charging pile input port and an electric vehicle output port, and is characterized in that a CAN transceiver module, a bus direct-current voltage source U0, a resistor and an insulation monitoring unit are arranged between the direct-current chargingpile input port and the electric vehicle output port. The invention further discloses a bidirectional testing method for the electric vehicle BMS and the direct-current charging pile. According to theinvention, the same circuit is adopted; simulation tests are carried out on the electric vehicle BMS and the direct-current charging pile respectively through controlling on-off of a switch and system parameters; the defect that the electric vehicle BMS test equipment and the direct-current charging pile test equipment are independently configured is overcome; the test system and the operation mode are simplified; the monitoring function in the charging process of the charging pile and the BMS is added; the interconnection and protocol consistency of the charging pile and the BMS are analyzed, and the test function of simulating the BMS and the charging pile and the monitoring and analysis function in the charging process are achieved.

Description

technical field [0001] The invention relates to a bidirectional testing system and method for an electric vehicle BMS and a DC charging pile, and belongs to the field of electric vehicle charging control. Background technique [0002] In recent years, the number of motor vehicles in my country has increased significantly, urban traffic congestion has become increasingly serious, and vehicle exhaust has become the main source of urban air pollution. In order to alleviate air pollution and reduce the environmental problems caused by the exhaust of traditional fuel vehicles. With the rapid progress of electric vehicle technology and the promotion of national policies, the market ownership of new energy vehicles is rapidly increasing. As the basic supporting facilities for new energy vehicles, the construction of charging piles has become an important task to promote the transformation and upgrading of my country's automobiles and help green transportation. [0003] Due to the...

AI Technical Summary

Problems solved by technology

At the current stage, the mileage of electric vehicles is not high, and the demand for charging is frequent. The issue of charging compatibility and safety has become the focus of the industry.

In particular, the interoperability and safety of charging piles in public charging places are the most prominent. Although some charging piles have passed laboratory tests, the quality of charging piles after actual on-site installation and use for a period of time cannot be guaranteed.

Some devices are likely to cause charging failures, protection function failures, etc. after repeated use and actual harsh environments, and may even lead to dangerous situations such as leakage and electric shock during charging.

At present, the portable AC charging pile test equipment in the industry has found problems such as single function, cumbersome test operation, volume and weight that are not easy to carry, etc.

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