# US 8,541,679 B2 · Photo-voltaic power generation equipment that can automatically track the sun

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- Number: US 8,541,679 B2
- Document ID: US8541679B2
- Status: Granted
- Kind: B2
- Application number: 12/995,629
- Filed: 2009-01-04
- Published: 2011-07-14
- Granted: 2013-09-24
- Earliest claimed: 2008-12-18
- Assignees: Et-Energy Corp.
- Applicants: Xinghua Wang
- Inventors: Xinghua Wang
- Web page: https://patentgrep.com/patent/US8541679B2

## CPC

- H02S 20/32: specially adapted for solar tracking
- F24S 30/452: Vertical primary axis
- F24S 25/13: Profile arrangements, e.g. trusses (F24S25/12 takes precedence)
- F24S 2025/02: {Ballasting means}
- F24S 2030/134: {in the form of gearings or rack-and-pinion transmissions}
- Y02E 10/47: Mountings or tracking
- Y02E 10/50: Photovoltaic [PV] energy
- H02S: GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES (obtaining electrical energy from radioactive sources G21H1/12; light sensitive inorganic semiconductor devices H10F; light sensitive organic semiconductor devices H10K30/00; thermoelectric devices H10N10/00; pyroelectric devices H10N15/00)
- F24S: SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS (for producing mechanical power from solar energy F03G6/00)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

This invention relates to a type of solar energy photo-voltaic power generation equipment that can automatically track the sun. This device includes a pedestal installed on a mounting platform. On the pedestal, a main support frame is provided. On the support frame, a solar cell panel platform is provided. On this platform, a solar energy photo-voltaic assembly is installed. The pedestal is connected to the mounting platform and can rotate relative to the mounting platform. On the pedestal, a circumferentially driven planet reduction gear is installed. On the main support frame, a platform elevation angle adjustment lifter is installed. The end of the telescopic link on the lifter is hinged to the solar cell panel platform. The circumferentially driven planet reduction gear and platform elevation angle adjustment lifter are connected to an electric control device.

## Claims

### Claim 1

A type of photo-voltaic power generation equipment that can automatically track the sun, comprising:
a pedestal installed on a mounting platform;
a main support frame installed on the pedestal;
a solar cell panel platform installed on the main support frame; and
a solar energy photo-voltaic assembly installed on the solar cell panel platform, wherein:
the pedestal is connected to and rotates relative to the mounting platform, and a pedestal circumferentially driven planet reduction gear is installed on the pedestal;
the main support frame includes at least two left and at least two right main support arms fixed symmetrically, wherein upper ends of the left and right main support arms are hinged to the solar cell panel platform and lower ends of the left and right main support arms are fixed on the pedestal, forming a “V” type structure having an angle of 110° to 130°;
between the left and right main support arms and intermediate the upper and lower ends of the left and right main support arms is a cross beam on which a platform elevation angle adjustment lifter is fixed;
an end of a telescopic link of the platform elevation angle adjustment left is hinged to the solar cell panel platform, hinge points of the main support arms are above the pedestal, and these hinge points are not on a same straight line with the hinge point of the telescopic link; and
the pedestal circumferentially driven planet reduction gear and the platform elevation angle adjustment lifter are connected to an electronic control device;
wherein, at a middle part of the main support frame an auxiliary support frame is provided and includes four auxiliary support arms; all upper ends of the auxiliary support arms are combined and hinged to a middle part of the solar cell panel platform at a singular hinged point that is independent of the hinged points of the main support arms, wherein the auxiliary support arm hinged point is on the same straight line with the hinged points of the main support arms, and lower ends of the auxiliary support arms are fixed directly on the pedestal; the cross beam is installed and fixed at one side of the auxiliary support arms.

### Claim 2 (depends on 1)

The photo-voltaic power generation equipment that can automatically track the sun of claim 1, wherein the pedestal comprises a rotor disc bearing fixed on a mounting platform and a rotor disc bearing cover that can rotate circumferentially inside the rotor disc bearing; an internal gear is provided on the rotor disc bearing, a pedestal circumferentially driving motor is installed on the rotor disc bearing cover, and an output end of the pedestal circumferentially driven planet reduction gear is provided with a planet gear, which engages the internal gear on the rotor disc bearing.

### Claim 3 (depends on 1)

The photo-voltaic power generation equipment that can automatically track the sun of claim 1, wherein the two left arms of the main support arms are installed in the shape of an inverted “V”, the upper ends of the two left arms are combined and hinged to the solar cell panel platform, and the lower ends of the two left arms are fixed on an outer circumference of the pedestal.

### Claim 4 (depends on 3)

The photo-voltaic power generation equipment that can automatically track the sun of claim 3, wherein the main support arms at each side is installed in the shape of an inverted “V” with an angle of 17° to 25°.

### Claim 5 (depends on 1)

The photo-voltaic power generation equipment that can automatically track the sun of claim 1, wherein a buffering air spring is provided at the hinge between the main support arms and the solar cell panel platform.

### Claim 6 (depends on 1)

The photo-voltaic power generation equipment that can automatically track the sun of claim 1, wherein an included angle between a moving direction of the telescopic link and a horizontal direction is 60° to 80°.

### Claim 7 (depends on 1)

The photo-voltaic power generation equipment that can automatically track the sun of claim 1, wherein an adjustment range of an elevation angle of the solar cell panel platform is 0° to 55°.

### Claim 8 (depends on 1)

The photo-voltaic power generation equipment that can automatically track the sun of claim 1, wherein a circumferential rotation angle of the pedestal is 360°.

### Claim 9 (depends on 1)

The photo-voltaic power generation equipment that can automatically track the sun of claim 1, wherein the two right arms of the main support arms are installed in the shape of an inverted “V”, the upper ends of the two right arms are combined and hinged to the solar cell panel platform, and the lower ends of the two right arms are fixed on an outer circumference of the pedestal.