Patent ID: 8436574

Claim:
A solar power supply system comprising: a load device; a solar panel that converts light energy into electrical energy; an energy storage device storing the electrical energy from the solar panel; a charge/discharge control device comprising a power detector and a power regulator, the charge/discharge control device selecting one of the energy storage device and the solar panel as an operation power supply to the charge/discharge control device and generating an output voltage according to the operation power supply; and a transformer device comprising a feedback circuit, the transformer device transforming the output voltage of the charge/discharge control device into a driving voltage to drive the load device, wherein the feedback circuit generates a feedback signal according to an actual power consumption of the load device, the power detector detects an instant output power of the charge/discharge control device, the power regulator automatically minimizes the output power of the charge/discharge control device according to the instant output power of the charge/discharge control device and the actual power consumption of the load device.