Performance test for EV Quick Charger

This paper is about `how to perform the test of 'EV (Electric Vehicle) quick charger' with the help of the newly developed test equipment and procedure. The quick charger delivers maximum DC power to EV, within the range of battery tolerance, in order to shorten the charging time. Therefore, the accurate control of charging current is essential for extending the battery life. In addition to the DC power supply to EV, quick charger also delivers analog signals for the safety check during the entire process of EV charging and communicates digital signal for charging states with BMS(Battery Management System). Therefore, it is recommended that Quick Charger Test Equipment (QCTE) measures the charging voltage, current, the analog signals, and the digital communication information from the quick charger, as if it is a real EV charging process. If the number of EV quick charger sale increases, predefined automatic test procedure to reduce the test time for the certification of national standards will be required. We have developed automatic performance test equipment for the quick charger and present the measured results in this paper.