Battery electrical characteristic simulation system and simulation method thereof

The invention discloses a battery electrical characteristic simulation system and a simulation method thereof. According to the scheme provided by the invention, when a control unit controls a port Aof a bidirectional power conversion unit to be connected with a DC power supply unit by controlling an S1, the DC power supply unit discharges to a port B through the port A of the bidirectional powerconversion unit; when the A port of the bidirectional power conversion unit is controlled to be connected with a DC load unit; the B port of the bidirectional power conversion unit charges the DC load unit through the A port. The control unit changes the energy transmission direction of the bidirectional power conversion unit by controlling S1. Therefore, the performance of the battery electricalcharacteristic simulation system on the external electrical characteristics is controlled, the function of simulating the battery is realized, the battery electrical characteristic simulation systemprovided by the invention ca