Fuel cell DC/DC system for hydrogen energy storage power generation and EIS detection method

The invention provides a fuel cell DC/DC system for hydrogen energy storage power generation and an EIS detection method, and the method specifically comprises the steps: in a fuel cell stack containing a hydrogen storage system, based on a bidirectional full-bridge converter, employing a stack inspection device, a hydrogen energy storage power generation system controller and a PWM drive circuit to achieve signal collection, calculation and real-time control, therefore, the fuel cell DC/DC system for hydrogen energy storage power generation is formed. The DC/DC adopts sliding mode control and extended phase shift control, the robustness of the system is enhanced on the basis of realizing voltage matching, power two-way transmission and ensuring safe and stable operation of the system, the loss of the system is reduced, and the efficiency of the system is improved. Binary sequence signals with different frequencies and the maximum length are injected into the DC/DC, a battery to be detected is excited by outp