Combined connector and energy storage system

The invention provides a combined connector and an energy storage system. The combined connector comprises a main body, a power transmission structure and a communication structure. The main body is provided with an accommodating cavity, a first via hole and a second via hole, one end of the power transmission structure is connected with the equipment, and the other end is connected with the power transmission line; the communication line comprises a first communication line and a second communication line, the equipment is provided with a communication part, the communication structure comprises a communication assembly accommodated in the accommodating cavity, and the communication assembly comprises three communication parts which are respectively connected with the first communication line, the second communication line and the communication part. According to the combined connector, the power transmission structure and the communication structure are arranged on the main body, so that the practicability