An electric vehicle DC charging pile interface circuit simulator

Abstract

The invention relates to an electric vehicle DC charging pile interface circuit simulator, the simulator includes a charging pile output socket, a DC power supply positive terminal, a DC power supply negative terminal, a control communication bus interface, a variable resistor, a loop resistance, and an auxiliary power supply The positive pole, the negative pole of the auxiliary power supply, several detection units and several isolating switches. The detection units all include a detection switch and standard acquisition interfaces respectively set at both ends of the detection switch. The above-mentioned components are connected to each other based on the detection unit and the isolating switch. The simulator architecture based on the detection unit proposed by the present invention realizes the interoperability consistency detection between the electric vehicle and the DC charging pile, improves the comprehensiveness and focus of the detection, and improves the safety and reliability of the electric vehicle and reduce the accident rate of electric vehicles.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control and detection, in particular to an electric vehicle DC charging pile interface circuit simulator. Background technique [0002] With the continuous popularization of new energy electric vehicles, electric vehicle charging piles, which are the basic supporting facilities for new energy electric vehicles, are also becoming more and more popular. As the name suggests, the charging pile is a device that can charge electric vehicles that can use new energy. It can charge various types of electric vehicles according to different voltage levels. Currently commonly used charging piles include DC charging piles and AC charging piles. DC charging piles are power supply devices that provide DC power for electric vehicle power batteries. They can provide large output power, and the adjustment range of output voltage and output current is also large. It can meet the requirements of fast charg...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the inability to realize the interoperability detection between the DC charging pile and the electric vehicle in the prior art, that is, for the comprehensive and focused interoperability of the DC charging pile interface based on the "bridge" between the DC charging pile and the electric vehicle. Due to the lack of operability detection equipment, a DC charging pile interface circuit simulator for electric vehicles is proposed. The simulator architecture based on the detection unit is used to realize the full interoperability of the 9 contacts of the charging pile output socket that can be connected to electric vehicles. Consistency detection, as well as special ground protection detection, enrich the detection methods of DC charging pile charging, improve the comprehensiveness and focus of detection, as well as the safety and reliability of electric vehicles, and reduce the incidence of electric vehicle accidents

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