Hybrid hydrogen storage system

The utility model discloses a mixed hydrogen storage system. The mixed hydrogen storage system comprises a three-channel secondary-positive converter, a first high-pressure hydrogen cylinder and a second high-pressure hydrogen cylinder, the utility model designs a novel hydrogen storage and supply system for mixing high-pressure gaseous hydrogen storage and solid hydrogen storage, which can effectively avoid the defects of single high-pressure gaseous hydrogen storage or single solid hydrogen storage; by utilizing the characteristic that high-pressure hydrogen is throttled and heated when the temperature is higher than the return temperature, the high-pressure hydrogen is used for heating the hydrogen storage alloy to promote the hydrogen storage alloy to release hydrogen, so that the input of an external heat source is reduced, and the danger of modes such as electric heating can be avoided; the solid hydrogen storage device is used for releasing secondary conversion cold energy of hydrogen to precool filled