Adjustable solar power generation apparatus

1. An adjustable solar power generation apparatus, comprising:

a solar power generation unit comprising:

a fixed lens unit comprising a fixed barrel and a converging lens configured for converging sunlight, the fixed barrel having a first end and an opposite second end, the fixed barrel comprising a rim surrounding the first end thereof, the converging lens positioned at the second end of the fixed barrel;

a movable barrel located inside and threadedly engaged with the fixed barrel, the movable barrel comprising an inner bottom surface facing the converging lens and an outer bottom surface, the inner bottom surface and the outer bottom surface located at opposite sides of a bottom of the movable barrel;

a solar cell located on the inner bottom surface for receiving the converged sunlight; and

a drive unit located outside the movable barrel and connected to the movable barrel:

a base being substantially a cylinder and comprising an upper surface and a lower surface at opposite sides thereof, the upper surface defining a recess, the rim in contact with the upper surface, the drive unit located at the bottom of the recess and driving the movable barrel to move toward or away from the converging lens so as to move the solar cell toward or away from the converging lens to adjust a light intensity of the converged sunlight received by the solar cell, the recess thereby providing a moving space for the movable barrel to move toward or away from the converging lens; and

a supporting bar connected to the lower surface of the base.

2. The adjustable solar power generation apparatus of claim 1 , wherein the drive unit comprises a connecting rod and a stepper motor, and the connecting rod connects the stepper motor and the movable barrel.

3. The adjustable solar power generation apparatus of claim 2 , further comprising a cover and three connection posts, wherein the cover comprises a light receiving surface and a back surface at opposite sides thereof, and the connection posts are each interconnected between the upper surface and the back surface.

4. The adjustable solar power generation apparatus of claim 3 , wherein the cover is made of glass.

5. The adjustable solar power generation apparatus of claim 3 , wherein the cover further comprises an anti-reflection layer formed on the light receiving surface.

6. An adjustable solar power generation apparatus, comprising:

a solar power generation unit comprising:

a fixed lens unit comprising a fixed barrel and a converging lens configured for converging sunlight, the fixed barrel having a first end and an opposite second end, the fixed barrel comprising a rim surrounding the first end thereof, the converging lens positioned at the second end of the fixed barrel;

a movable barrel located inside and threadedly engaged with the fixed barrel, the movable barrel comprising an inner bottom surface facing the converging lens and an outer bottom surface, the inner bottom surface and the outer bottom surface located at opposite sides of a bottom of the movable barrel;

a solar cell located on the inner bottom surface for receiving the converged sunlight; and

a drive unit located outside the movable barrel and connected to the movable barrel;

a base being substantially a cylinder and comprising an upper surface and a lower surface at opposite sides thereof, the upper surface defining a recess, the rim in contact with the upper surface, the drive unit located at the bottom of the recess and driving the movable barrel to move toward or away from the converging lens so as to move the solar cell toward or away from the converging lens to adjust a light intensity of the converged sunlight received by the solar cell, the recess thereby providing a moving space for the movable barrel to move toward or away from the converging lens;

a cover comprising a light receiving surface and a back surface at opposite sides thereof, the base fixed to the back surface, the fixed lens unit facing the back surface;

a light-concentrating reflector comprising an inwardly curved reflective surface for reflecting sunlight to the converging lens and a rim surrounding the reflective surface; and

a connecting unit connecting the rim of the light-concentrating reflector and the light receiving surface.

7. The adjustable solar power generation apparatus of claim 6 , wherein the converging lens is located at the focal point of the reflective surface.

8. The adjustable solar power generation apparatus of claim 7 , wherein the connecting unit comprises three bars, one end of each of the bars is connected to the rim, and the other end of each of the bars is connected to the light receiving surface.

9. The adjustable solar power generation apparatus of claim 8 , further comprising two connection poles, wherein one end of each of the connection poles is connected to the back surface, and the other end of each of the connection poles is connected to the base.

10. The adjustable solar power generation apparatus of claim 9 , wherein the drive unit comprises a connecting rod and a stepper motor, and the connecting rod connects the stepper motor and the movable barrel.