Patent ID: 8018098

Claim:
A portable solar power supply system, comprising a receiving unit, a control block, a storage unit, an output unit and a display unit; the portable solar power supply system characterized in that: the control block is simultaneously coupled to the receiving unit, the storage unit, the output unit and the display unit, and the control block further comprises a charge controller, an overdischarge controller and a DC-DC converter; the receiving unit includes a solar power receiving interface and a DC power receiving interface, wherein, the solar power receiving interface is coupled to a solar panel for receiving a DC power converted from a solar power, the receiving unit receives the DC power and then transmitting the DC power to the control block, the DC power receiving interface is provided for receiving an external DC power and optionally supplying the external DC power to a portable product directly or optionally charging the portable solar power supply system with the external DC power; the charge controller is simultaneously coupled to the receiving unit and the storage unit for controlling a charge of the storage unit by the DC power; the overdischarge controller is coupled to the storage unit, and the overdischarge controller has a predetermined safe value, wherein the overdischarge controller terminates a discharge of the storage unit if the DC power stored in the storage unit is lower than the predetermined safe value; the DC-DC converter is coupled to the output unit, and the DC-DC converter has a predetermined specific value, wherein the DC-DC converter is used for stabilizing the DC power at the predetermined specific value and then transmitting the DC power to the output unit, thereby outputting the DC power to the portable product through the output unit; the control block simultaneously provides two functions of (1) stabilizing the external DC power from the DC power receiving interface and then optionally transmitting the DC power via the DC-DC converter to the output unit instead of transmitting the DC power to charge the storage unit; and (2) stabilizing the DC power discharged from the storage unit and then transmitting the DC power to the output unit; the display unit is coupled to the control block for displaying working states of the portable solar power supply system, wherein the working states comprises at least a charging state, a power supplying state, and a low-power state.