The Interoperability Test Study of Electric Vehicle A.C. Charging Spot

The interoperability test between electric vehicle and charging equipment plays an important role on the popularization and application of electric vehicles. The principle of control pilot circuit of charging equipment is introduced firstly. Based on new national standard and the new charging interoperability test specification, the interoperability testing device of A.C. charging spot is designed and the device is used to test the interoperability test items. The test results show that the following problems exist in the interoperability test of the charging spot: (1) the potential of power supply exceeds the allowable range of ± 0.8V. (2) Charging connection control timing does not meet the standard requirements. (3) When the charging spot is under abnormal condition, it can't disconnect the AC power supply circuit within the specified time.