Combined heat and power generation system for fuel cell motor home and working method

The invention provides a combined heat and power generation system for a fuel cell motor home and a working method. The combined heat and power generation system mainly comprises an energy supply unit, a cooling water unit and a heat exchange and energy storage unit. The energy supply unit is composed of a solar photovoltaic panel, a fuel cell stack, a lithium battery pack and the like; the cooling water unit is composed of a circulating water pump, a heater, a cooling fan and the like. The heat exchange energy storage unit is composed of a first heat exchange loop, an organic Rankine cycle loop and a second heat exchange loop. According to the working method of the system, based on the requirements of a user in the driving process, heat management of the fuel cell system is achieved in a heat energy recovery mode and a direct heat dissipation mode, meanwhile, energy collected by the solar photovoltaic panel is combined with the lithium battery pack to supply power to other devices in the motor home, and a fu