Design of Field Test Device for DC Charging Pile of Electric Vehicles

Aiming at the problems of the existing field test for DC charging pile of electric vehicles, such as tedious preparation and complex operation process, a modular DC charging pile test device is developed. Based on the charging requirement and working principle, five modular which are power module, measuring module, communication module, control module and the central processing unit are configured, the test device of compact makeup and modular connection is achieved. The test prototype based on the above modular design is assembled and applied to the field test of DC charging pile. The test results show that the device has stable communication and reliable operation ability and the test accuracy of electrical parameters meets the design requirements. The achievement in this paper can provide important technical support for modular industrial assembly design, commercial and industrial application of DC charging pile in field test.