KR100981272B1 - Solar tracking apparatus and photovoltaic driving system - Google Patents

Abstract

The present invention provides a tracking device body including a plurality of partitions protruding radially from a central axis to form at least three or more equally divided sensing spaces, and a light shielding portion provided above the partitions; An optical sensor provided in the sensing space and disposed toward the light blocking unit; A solar position tracking device comprising: a metal reflecting aspherical portion for reflecting light incident from the rear of the optical sensor to the optical sensor in each sensing space of the tracking device body, whereby the weather Even if the sun suddenly changes its position due to cloudy or sunset and sunrise, the sun's position can be tracked by its own light sensor, and the very simple configuration makes the whole device very simple and the control circuit It is possible to provide a new solar position tracking device and a solar cell module driving system using the same.

Description

SOLAR TRACKING APPARATUS AND PHOTOVOLTAIC DRIVING SYSTEM}

The present invention relates to a solar tracking device for efficiently using solar energy and a solar cell module driving system using the same.

Recently, due to the earth's energy shortage and environmental pollution, development of environmentally friendly alternative energy is being sought. One of them is the rapid development and utilization of solar energy.

Various devices for using solar energy as the alternative energy as described above, that is, solar (photovoltaic) cells, solar heating devices and the like have been developed.

In order to efficiently use solar energy in this development process, many solar position tracking devices have been proposed to enable the solar energy collector to track the direction of the sun.

Solar position tracking devices are largely a coordinate calculation method for tracking the sun by operating the drive motor according to the coordinates calculated by the program, and the light that tracks the sun by controlling the driving motor according to the signal output detected by the optical sensor from time to time. The sensor can be classified into two types.

While the coordinate calculation method has the advantage of tracking the sun regardless of weather conditions, the cumulative error requires periodic correction work, which is cumbersome to maintain and repair. In particular, in the case of the coordinate calculation method, it is difficult to apply to a method in which a large number of small solar energy using devices are installed.

The light sensor method has the advantage that the structure is relatively simple, but if the weather is cloudy, the sun cannot be tracked. If the sun's position has changed considerably over time, the sun's position is tracked by the sun tracking device. There is a problem that the tracking itself becomes impossible because it is out of the range.

The present invention is proposed to solve the problem of the solar position tracking device by the optical sensor method as described above.

Meanwhile, US patents US4,424,801, US4,495,408, US4,672,191 have been proposed as prior art, and also Korean Patent Nos. 10-0836870, Korean Patent Nos. 10-0780565, and Korean Patent Application Publication 1994-0007551 and Korean Utility Model Publication No. 20-2008-0000278 have been proposed. The foregoing prior arts are all considered to be incorporated herein.

In particular, Korean Utility Model Publication No. 20-2008-0000278 provides an auxiliary sensor in addition to the main tracking sensor to track the sun's position even when the sun does not appear for a long time and then the sun appears at a significantly changed position at the last position. Proposing a configuration.

However, this conventional technology requires additional configuration of the sensor, which not only complicates the overall device but also complicates the control circuit.

The present invention can track the position of the sun in the sudden change of position of the sun due to cloudy weather or sunset and sunrise, and because of the very simple configuration, the overall device is very simple and the control circuit can be applied very simply. A new solar position tracking device and a solar cell module driving system using the same are provided.

In order to solve the above problems, the present invention, a plurality of partitions protruding radially from the central axis to form at least three or more evenly divided sensing spaces, and tracking consisting of a light shield provided on the upper portion of the partition Device body; An optical sensor provided in the sensing space and disposed toward the light blocking unit; In the solar position tracking device comprising: a metal reflective aspheric portion for reflecting the metal incident light from the rear of the optical sensor to the optical sensor in each sensing space of the tracking device body is formed.

In the above, it is preferable that the tracking device body is metal-plated on the surface of the tracking device body made of synthetic resin for metal reflection. Of course, according to the embodiment, only the metal reflective aspherical portion may be formed of a metal material, or the entire tracking device body may be selected as a metal material.

In another aspect of the invention, the support for being fixed to the structure; A first rotating body rotatably provided with respect to the support around a first rotating shaft parallel to a horizontal plane; A first driving device provided on the support for rotating the first rotating shaft; A second rotating body rotatably provided with respect to the first rotating body about a second rotating shaft perpendicular to the first rotating shaft; A second driving device provided on the first rotating body to rotate the second rotating shaft; A solar cell module fixed to the second rotating body; The solar position tracking device provided connected to the second rotating body and disposed in the same direction as that of the solar cell module; It provides a solar cell module drive system comprising a.

The first driving device may include a first motor provided with a first worm on the first motor shaft and a first concentric shaft with the first rotation shaft on the first rotation shaft to engage the first worm with the worm gear. Consists of a worm wheel; The second driving device includes a second motor provided with a second worm on the second motor shaft, and a second worm wheel coaxially provided with the second rotation shaft on the second rotation shaft to be coupled to the second worm and the worm gear. Thing; This is preferred.

As described above, the present invention is able to track the position of the sun by its own light sensor even when the sun suddenly changes its position due to cloudy weather or sunset and sunrise. It is possible to provide a new solar position tracking device and a solar cell module driving system using the same, which can be simplified and its control circuit can be applied very simply.

Hereinafter, the specific configuration and operation according to an embodiment of the present invention will be described in detail.

1 is a conceptual perspective view of a solar position tracking device according to an embodiment of the present invention, Figure 2 is an exploded conceptual perspective view of Figure 1, Figure 3 is a front view and a cross-sectional view of Figure 1, Figure 4 is a tracking of Figure 1 Figure 5 is a perspective view of the device body from the bottom, Figure 5 is a conceptual diagram for explaining the operation of the embodiment of Figure 1, Figure 6 is a conceptual perspective view of a solar cell module driving system according to an embodiment of the present invention, Figure 7 6 is a conceptual diagram for showing the worm gear coupling of FIG.

First, the sun position tracking apparatus 100 of the present embodiment will be described with reference to FIGS. 1 to 5.

This solar position tracking device 100 is largely composed of a tracking device body 110, four optical sensors 120 and the optical sensor support 130.

First, the tracking device body 110 will be described.

The tracking device body 110 includes a light blocking portion 111, a partition portion 112, and a metal reflective aspherical surface 114.

The partition part 112 protrudes radially from the central axis 112a, whereby four equally divided sensing spaces 113 are formed. In addition, an optical sensor 120 is provided in each sensing space 113. In the present exemplary embodiment, four sensing spaces 113 are formed by four partitions 112. However, if at least three sensing spaces 113 are formed, it is possible to track the position of the sun in all directions. Do.

The light blocking portion 111 is formed on the partition portion 112. The light blocking unit 111 is to block light incident from the sun into the sensing space 113 when the tracking device body 110 is accurately directed to the sun.

The light shield in the prior art is used only for the purpose of blocking light.

That is, when the tracking device body 110 is precisely facing the sun, all four light sensors 120 do not sense light by the light blocking unit 111. When the tracking device body 110 faces the sun at an angle, either one of the optical sensors 120 or two optical sensors 120 detects the sunlight (that is, two or three optical sensors 120). Is a state in which the sun light is not detected by the light blocking part 111 through the partition part 112), and the direction of the tracking device body 110 viewed in the direction in which the light sensor 120 detecting the sun light is located. If the four light sensors 120 are not detected by the light-shielding portion 111 is changed to the state, that is, it is changed to the state exactly facing the sun.

However, the light blocking portion 111 of the present embodiment is modified to form the aspheric portion 114 of the metal reflective surface by changing its lower shape. According to the exemplary embodiment, the light blocking part 111 and the metal reflective aspherical part 114 may be provided separately from each other, but the bottom surface of the light blocking part 111 functions as the aspherical part 114 to simplify the entire structure. Let's do it.

The metal reflecting aspherical portion 114 is formed to reflect the light incident from the rear of the optical sensor 120 to the optical sensor 120.

The aspherical surface for metal reflection has two characteristics, that is, a metal reflective surface that causes metal reflection and an aspheric surface is formed.

In order to form the metal reflection surface, it is sufficient that the surface of the aspherical portion (preferably the entire tracking device body) is made of a metal material. In order for the surface of the aspherical surface to be made of metal, i) a method in which the entire aspherical surface is made of metal (that is, a method made of metal in both the inside and the outside), and ii) the aspherical surface itself is made of synthetic resin. There is a method of metal plating.

In this embodiment, the tracking device body 110 forms a basic body made of synthetic resin so that the molding process can be made inexpensively. After the form is completed, the entire surface of the tracking device body 110 made of synthetic resin is made of metal. Plating (nickel plating or chromium plating, etc.) was performed. Accordingly, the aspherical surface 114 also has a metal plated surface, that is, a metal reflection surface, thereby allowing metal reflection.

In addition, the metal reflective aspherical surface has an aspherical surface, not an spherical surface, but an elliptical surface, a parabolic surface, and the like, even when the sun is positioned behind the optical sensor 120, the sunlight is reflected from the aspherical surface 114. The light sensor 120 was able to detect the light.

The optical sensor support unit 130 is fixed to the lower end of the partition unit 112, and the optical sensor 120 is disposed on the light blocking unit 111 on the upper side of the optical sensor support unit 130.

Therefore, as shown in FIG. 5, when the tracking device body 110 faces the sun at an angle, sunlight is directly incident on the optical sensor 120, and when the sun is located behind the tracking device body 110. After the sunlight is reflected from the metal reflective aspherical surface 114 is incident to the optical sensor 120.

Thus, regardless of the position of the sun in Figure 5, the tracking device body 110 can track the position of the sun when rotated counterclockwise toward the sun.

As described above, the sun position tracking device 100 can track the sun even when the sun is located behind the sun position tracking device 100 by forming the metal reflective aspherical surface 114.

This situation can occur mainly when the sun is covered by clouds for some time or between sunset and sunrise.

In addition, the control method of the solar position tracking device 100 having such a structure can be applied to the conventional method as it is, the configuration of the control circuit is very simple, and no additional optical sensor is added, forming the metal reflective aspherical portion Since only the whole structure is very simple, the fundamental problem of the solar position tracking device by the conventional optical sensor method can be solved at once.

The solar position tracking device as described above may be applied to any device using solar energy, such as a system for using solar energy or a system for using solar energy.

Hereinafter, an embodiment in which the solar position tracking device 100 is applied to a solar cell module driving system will be described.

As shown in FIG. 6, the present system includes a support 210, a first rotating body 220, a first driving device 230, a second rotating body 240, a second driving device 250, and a solar cell. Module 260, the sun position tracking device 100.

The support 210 is for being fixed to a specific structure.

Typically, a solar cell module driving system is used to produce electricity using solar energy, and may be used in various ways.

The solar cell module driving system is generally used for small-scale power generation. In particular, the solar cell module driving system is used to supply electricity to a corresponding electric device provided around an electric device requiring direct electricity such as a street lamp.

The first rotating body 220 is provided on the support 210.

The first rotating body 220 is rotatably provided with respect to the support 210 about the first rotating shaft 221 parallel to the horizontal plane.

As a first driving device 230 for rotating the first rotary shaft 221, the first motor 231 is fixed to the support 210.

The first worm 233 is provided on the first motor shaft 232 of the first motor 231, and the first worm wheel 234 is concentric with the first rotation shaft 221 on the first rotation shaft 221. The first worm wheel 234 is provided with a first worm 233 and a worm gear coupled thereto.

In general worm gear engagement, if the lead angle of the worm is less than a predetermined value, automatic fastening occurs. Accordingly, the first worm wheel 234 may rotate by the rotation of the first worm 233, but the first worm wheel 233 does not rotate by the rotation of the first worm wheel 234.

The second rotating body 240 is provided on the first rotating body 220.

The second rotating body 240 is rotatably provided with respect to the first rotating body 220 about the second rotating shaft 241 perpendicular to the first rotating shaft 221.

The second rotary shaft 241 may be provided to be orthogonal to the extension line of the first rotary shaft 221, but typically the second rotary shaft 241 is perpendicular to the extension line of the first rotary shaft 221.

As a second driving device 250 for rotating the second rotating shaft 241, a second motor 251 is fixed to the first rotating body 220.

The second worm 253 is provided on the second motor shaft 252 of the second motor 251, and the second worm wheel 254 is concentric with the second rotation shaft 241 on the second rotation shaft 241. The second worm wheel 254 is provided, and the second worm 253 is coupled to the worm gear.

7 illustrates the configuration of the first driving device 230 to the second driving device 250 in more detail.

A plurality of solar cell modules 260 are provided on the second rotating body 240.

Therefore, the solar cell module 260 may face an arbitrary direction by the driving of the first driving device 230 and the second driving device 250.

In addition, the second rotation body 240 is provided with a solar position tracking device 100 in the same direction as the direction that the solar cell module 260 is facing.

Therefore, when the sun position tracking device 100 determines the direction in which the sun position tracking device 100 rotates to face the sun, the first driving device 230 and / or the second driving device 250 are driven to drive the sun. The battery module 260 and the sun position tracking device 100 rotate until they face the sun.

Of course, the components requiring electricity in this embodiment is supplied with electricity from the solar cell module 260.

The above embodiments are only preferred embodiments of the present invention, and the technical idea of the present invention may be variously modified or adjusted by those skilled in the art. Such modifications and adjustments fall within the scope of the present invention if they use the technical idea of the present invention.

The present invention can be used as a solar position tracking device for using solar energy efficiently, or a solar energy using device using the same.

1 is a conceptual perspective view of a sun position tracking device according to an embodiment of the present invention,

2 is an exploded conceptual perspective view of FIG. 1;

3 is a front view and a cross-sectional view of FIG.

4 is a perspective view from below of the tracking device body of FIG. 1;

5 is a conceptual diagram for explaining the operation of the embodiment of FIG.

6 is a conceptual perspective view of a solar cell module driving system according to an embodiment of the present invention;

7 is a conceptual diagram for showing the worm gear coupling of FIG.

<Description of Symbols for Main Parts of Drawings>

100: solar position tracking device 110: tracking device body

111: light shielding portion 112: partition portion

113: detection space 114: aspherical surface portion for metal reflective

120: optical sensor 130: optical sensor support

Claims (4)

A tracking device body comprising a plurality of partitions protruding radially from a central axis to form at least three or more equally divided sensing spaces, and a light shielding portion provided on the partitions; An optical sensor provided in the sensing space and disposed toward the light blocking unit; In the solar tracking device consisting of: And a metal reflective aspheric portion for reflecting light incident from the rear of the optical sensor to the optical sensor in each sensing space of the tracking device body. The method of claim 1, The tracking device body is a solar position tracking device, characterized in that the metal surface of the tracking device body made of synthetic resin for metal reflection. Supports for fixing to structures; A first rotating body rotatably provided with respect to the support around a first rotating shaft parallel to a horizontal plane; A first driving device provided on the support for rotating the first rotating shaft; A second rotating body rotatably provided with respect to the first rotating body about a second rotating shaft perpendicular to the first rotating shaft; A second driving device provided on the first rotating body to rotate the second rotating shaft; A solar cell module fixed to the second rotating body; The solar position tracking device of claim 1 or 2, which is connected to the second rotatable body and is disposed in the same direction as the direction in which the solar cell module faces; Solar cell module drive system, characterized in that comprises a. The method according to claim 3: The first driving device includes a first motor provided with a first worm on the first motor shaft, and a first worm wheel provided on the first rotation shaft concentrically with the first rotation shaft to be coupled to the first worm and worm gear. Lose; The second driving device includes a second motor provided with a second worm on the second motor shaft, and a second worm wheel coaxially provided with the second rotation shaft on the second rotation shaft to be coupled to the second worm and the worm gear. Thing; Solar cell module driving system, characterized in that.

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