The invention relates to the technical field of
hydrogen storage, in particular to a multistage
solid hydrogen storage
system and method based on photo-thermal regulation and control and
temperature difference utilization, and the
system comprises a photo-thermal conversion cavity, at least one part of the photo-thermal conversion cavity is a light-transmitting window, the inner surface of the photo-thermal conversion cavity is provided with a
solar energy absorption
coating, and the
solar energy absorption
coating is used for receiving and converting solar
radiation energy into
heat energy; and the first-stage
hydrogen storage container is arranged in the photo-thermal conversion cavity so as to directly or indirectly receive heat. According to the
system, free
solar energy is directly used as a primary heat source in the
hydrogen desorption process, and the night low-temperature environment is used as a natural cold source in the
hydrogen absorption process, so that the traditional
electric heating and mechanical
refrigeration modes are fundamentally abandoned, the operation
energy consumption is greatly reduced and even eliminated, and the
energy consumption is reduced. Meanwhile, the
hydrogen desorption and heat absorption process of the system is coupled with solar heating in the
daytime, the
hydrogen absorption and heat release process is coupled with environment cooling at night, and intelligent switching between natural heating and natural cooling is achieved.