How to achieve power distribution in the electrical main circuit of a dual gun DC charging station

Power distribution in a dual-gun DC charging station is achieved by a central controller, which manages power splitting between the two guns using DC contactors to dynamically allocate power based on demand, often enabling full-power single-gun charging or simultaneous, split-power dual-gun charging.

The following diagram shows the electrical schematic of the main circuit of a dual gun DC charging station, with the core being the independent operation or switching of the two charging guns controlled by a contactor.

Dual gun independent control: 

☻ When charging gun 1 is required for charging, the control system will connect the coil power supply corresponding to K3 and K4. 

☻When charging gun 2 is required for charging, the control system will connect the coil power supply corresponding to K5 and K6.

The function of K1 and K2: They are the main gates for power distribution. By controlling the closed state of K1 and K2, it is possible to determine how many charging modules are put into operation, thereby dynamically adjusting the total output power of the system. Assuming that each charging module has a power of 30kW, the dual gun electrical main circuit system mentioned above is configured with four sets of 30kW charging modules (total power of 120kW), and the parallel connection of power units is achieved through contactors K1 and K2. To ensure stable system operation and load balancing, the general logic setting is that when K1 and K2 are closed simultaneously (i.e. all modules are put into operation), only a single charging gun is allowed to perform high-power charging operations.