Vehicle-mounted solar power generation device

The utility model discloses a vehicle-mounted solar power generation device, which comprises solar power generation components mounted on the vehicle roof; the solar power generation components comprise a solar collector positioned at the top, a radiating fin and a thermoelectric cell; a hot end and a cold end of the thermoelectric cell conduct the heat exchange with a solar thermal collector and the radiating fin respectively; a heat radiation gap between the radiating fin and the vehicle roof is reserved; a plurality of slotting structures also can be formed on the radiating fin; and the slotting direction is in accordance with the running direction of the vehicle. The vehicle-mounted solar power generation device improves the utilization efficiency of solar energy, ensures that the power generation cost is reduced below 0.4 Yuan per kilowatt-hour, has the advantages of simple structure, convenient manufacture and installation, and also can have the sun-shading effect on a vehicle when mounted on the vehicle roof.