TW201512614A - Solar tracking method and mechanism based on shutter reflectors - Google Patents

Abstract

The present invention discloses a solar tracking method and mechanism based on shutter reflectors. The solar shutter comprises at least two levels shutter reflectors, the first and second level shutters have a certain stage distance, and those shutter reflectors can appropriately adjusted based on the time-variant incident angle of the sunlight, after being twice reflected by the shutter-reflector, can always be vertically incident upon the solar concentrator and solar cells during the daytime. Compared with the traditional solar tracker, the shutter reflector which is simpler and cheaper, can always guide the sunlight normally upon the Fresnel concentrator to increase the efficiency, save energy and reduce carbon.

Description

Solar louver type reflector device chasing Japanese method and mechanism thereof

The invention relates to a solar solar chasing technology, in particular to a technical field in which a louver-type reflecting plate device is used to trace the sun, so that sunlight is reflected by the reflecting plate device, and then the Fresnel collecting lens is vertically incident all the time.

According to the sun, the illumination range of the sunlight is extremely large, and the sunshine time can be incident in different directions. The solar light incident vertically downward at noon is the strongest, in order to increase the solar energy per unit area of sunlight, and to improve the incident angle of the solar light. The impact of solar concentrators and solar chasing systems must be used to improve the efficiency of receiving sunlight.

Many solar chasing systems have been developed today, and most of them are directly applied to solar cells, so that the front side of the solar cell is perpendicular to the light incident on the sun, thus making the received energy the strongest and having the best power generation efficiency. In order to achieve accurate pursuit of the day, in addition to the consideration of the use of the external environment, the transmission module of the solar chasing system should also adopt the overall design, so that its structure can be simplified and facilitate the assembly, in addition, The entire chase system is modularized to meet transportation, installation and precision product requirements. For the various environmental considerations and requirements, including installation size, space constraints, latitude and longitude and local climatic factors, the two main types of solar-powered solar-powered systems are single-axis trackers and single-axis trackers. Dual-axis tracker, in which the single-axis tracking system is generally applied to large-scale distributed power generation systems, as shown in Figure 13, for the national single M438074 "single-axis solar chasing system structure" In addition to being applicable to large-scale distributed generation systems, the dual-axis tracking system is also applicable to residential facilities with smaller spatial distribution. As shown in Figure 14, it is the new domestic patent No. M371231. Construction case.

However, whether it is a single-axis tracking system or a dual-axis tracking system, the entire solar cell module (including solar cells, Fresnel collecting lens, heat-dissipating module) and the motor or transmission mechanism are rotated together for chasing the sun. Not only is the horse's horsepower sufficient, but the drive mechanism is bulky, the structure is complicated and cumbersome, and its construction cost is high, so the power consumption required for the operation of the drive mechanism is also considerable.

In view of the problems of the conventional conventional Japanese chasing system, the inventors further study and develop the solution, so the main purpose of the present invention is to save the construction cost of the chasing agency and reduce the power consumption required for operation, and then propose A louver-type reflector device chasing the day system to perform the day-to-day tracking, so that the deflection angle of the reflector device with the high and low layers changes with the sunshine time, and the sunlight is reflected by the high- and low-layer reflector device. In order to achieve the all-weather vertical incidence Fresnel collecting lens, the light collecting efficiency and the amount of power generation are improved per unit time.

In order to achieve the foregoing objectives, the technical means utilized by the present invention are as follows: A solar louver type reflector device tracking method includes: (a) a step of a high-rise, low-level reflector, which is disposed on at least one platform. a first layer board and at least one second layer board, wherein the first layer board and the second layer board have a height drop; (b) a chasing step, the first layer board and the second layer board are arranged And (c) a reflecting step, after the solar light is reflected by the second layer to the first layer, and vertically incident on a Fresnel collecting lens below the reflecting plate, According to the collected light, a solar cell located therein is irradiated.

When the sunshine angle θ of the step (b) is 75 degrees to 37.5 degrees, only the first layer is deflected; if the sunshine angle θ is 37.5 degrees to 0.5 degrees, the first layer and the second layer are The plate is deflected by an angle function; if the sun angle θ is zero, the first layer and the second layer are both vertical.

The angle function of the above step (b) is such that the inclination angle θ2 of the second laminate is equal to the inclination angle θ1 of the first laminate plus 1/2 times the sunshine angle θ.

The first layer plate and the second layer plate of the step (b) are plural and mutually staggered, and when the width of the Fresnel collecting lens is X, the width of the first layer is When set to Y, this And when the width of the second layer is set to Z, the And the minimum spacing of each first layer is set to A, then the relationship between A and Y is set to .

The horizontal spacing of the first layer and the second layer of the step (b) is set to B, and the vertical spacing is set to C, and the relationship between B and A is B=A/2, and C and The relationship of B is .

In order to implement the above method, a solar louver type reflector tracking mechanism is realized by the following components, comprising: a platform, wherein the platform is provided with at least a first reflecting device and at least a second reflecting device, and The first reflecting device and the second reflecting device have a height difference; the first reflecting device is supported by a set of one pillars to support a first layer, and the first layer has an internal reflecting surface, and wherein a first driving device disposed on a first pillar drives the first layer to rotate; and the second reflecting device is supported by a set of two pillars to support a second laminate, and the second laminate has An outer reflecting surface is driven by a second driving device disposed on one of the second pillars to rotate the second layer.

The first reflecting device and the second reflecting device are plural and arranged in a staggered manner, and in particular, the minimum spacing of each first layer is set to A, and the width of each first layer is set to Y, then A Relationship with Y is set In addition, the horizontal spacing of the first layer and the second layer is set to B, and the vertical spacing is set to C, then the relationship between B and A is B=A/2, and the relationship between C and B Then .

The solar louver type reflector rear-tracking mechanism further includes a controller, and the controller is electrically connected to the first driving device and the second driving device, and the controller includes a control program. Moreover, the program of the control program is such that when the sunshine angle θ is 75 degrees to 37.5 degrees, the first driving device is deflected by the first layer; when the sunshine angle θ is 37.5 degrees to 0.5 degrees, The first driving device and the second driving device deflect the first layer plate and the second layer plate by an angle function; when the sun angle θ is zero, the first driving device and the second driving device respectively drive the first driving device Both the first and second layers are vertical.

The angle function described above is such that the inclination angle θ2 of the second laminate is equal to the inclination angle θ1 of the first laminate plus 1/2 times the sunshine angle θ.

Therefore, the use of the above technical means according to the present invention has the following effects: 1. The system of the present invention uses only the first driving device and the second driving device to respectively actuate the first layer plate and the second layer plate, and each solar cell Modules (including wafers, heat sinks, Fresnel concentrating lenses, etc.) and their motor drive mechanisms are fixed, which saves energy and the motor drive mechanism can be small. 2. In the case of changing with the sunshine time, the system of the present invention re-orients the solar light and vertically downwards by appropriately arranging the louver-type reflector device and driving the reflector device to a proper tilt angle, and then matching the Philippine The neil collecting lens, which can collect the solar light onto a solar cell wafer, can convert the solar energy into electric energy, and the average energy obtained by the system of the invention in the full sunshine time is about 1.3 of the average energy of direct sunlight exposure. Times. 3. The system of the present invention is matched with a Fresnel collecting lens, and any incident angle of sunlight within an angle of ±75 degrees from the normal to the ground plane can be perpendicularly incident to the Fresnel collecting lens, and in the full sunshine time. The light collection efficiency is over 92%. 4. The system of the invention has a simple structure and a low manufacturing cost.

The invention relates to a solar louver type reflector device chasing method and a mechanism thereof. As shown in FIG. 1 and FIG. 2, the method comprises the following steps: (a) a step of a high-rise and low-level reflector, Locating at least one first layer and at least one second layer on a platform, wherein the first layer and the second layer have a height difference; and (b) a chasing step, the first layer is And the second layer is deflected or interlocked separately; and (c) a reflecting step, after the solar light is reflected by the second layer to the first layer, the Fresnel set vertically below the reflector is vertically incident The optical lens is configured to illuminate the solar cell located therein by collecting light.

The reflector device 20 of the louver type reflector rear-tracking mechanism 1 of the present invention is divided into a high-rise and low-layer reflector, and the purpose thereof is to enable the sunlight to pass through the high-rise or high-rise and low-layer reflector devices at different sunshine angles. After the deflection reflection 20, the Fresnel collecting lens 30 is vertically incident, and finally the solar cell 40 is irradiated with the collected light. Moreover, the size and position of the reflector device 20 are determined according to the size and spacing of the Fresnel collecting lens 30, and the tilt angle of the reflector device 20 must be changed according to the incident angle of the sunlight, and the geometrical optics is transmitted. The reflection theorem in the middle can calculate the inclination of the high-rise and low-level reflectors at different times. Therefore, the louver type reflector device 20 can be applied to the solar illuminator by the sun illuminating time, and the solar illuminator can be directly operated by the simple reflector device 20, so that the invention has a simple and light-tracking structure. Ying and running energy consumption is low, compared with the traditional chasing system, the invention has a more energy-saving effect.

As shown in Figure 2, in order to make different sun angles (angle with the zenith direction) The solar light can be vertically incident on the Fresnel collecting lens 30, and the angle between the first layer 213 and the second layer 223 must be adjusted according to the sun angle of the sunlight. , ,among them Is the angle between the first layer 213 and the zenith direction, and It is the angle between the second layer plate 223 and the zenith direction. The solar rays are first reflected by the first and second plates 213, 223 and then vertically incident on the third layer of the Fresnel collecting lens 30 and collected in the fourth layer of solar cells 40 to achieve optimum light collecting efficiency.

The reason why the louver type reflecting plate chasing mechanism 1 adopts a high-rise and low-layer reflecting plate is that if only a single-layer reflecting plate is used, the projection width of the single-layer reflecting plate will be narrowed due to an increase in the incident angle of sunlight. When the incident angle of the light is greater than a certain angle, the entire Fresnel lens cannot be covered, so the high and low two-layer reflector design is adopted. , versus The relationship between the two can be found using geometrical optics analysis. As shown in the geometrical optical analysis chart of Fig. 3, the relationship of the following mathematical formula 1 can be obtained: [Math 1]

From the mathematical formula 1, the relationship of the following mathematical formula 2 can be calculated: [Math 2]

If the sun's sun angle As is known, the angle between the first layer 213 and the zenith direction is given. , the angle between the second layer 223 and the zenith direction can be obtained according to Mathematical Formula 2. . If the angle of the first layer 213 is assumed maintain Fixed at different angles of sunshine Obtaining the inclination of the second layer 223 As shown in Table 1 (Sunshine angle Inclination angle with each reflector and The relationship between) is shown.

In the actual operation, the relationship between the first layer and the second layer of reflectors at different angles of incidence is shown in Table 2:

Based on the concentrating efficiency considerations, the louver type reflector tracking mechanism 1 must be carried out in three stages according to different sunshine hours (take the morning time), and the first stage sunshine time is between 07:00 and 09:30, and the sunshine When the angle is 75 degrees to 37.5 degrees, the first layer 213 is used to make the sunlight directly incident on the Fresnel lens 30 by one reflection; the second stage sunshine time is between 09:30 and 12:00. When the sunshine angle is 37.5 degrees to 0.5 degrees, the first layer 213 and the second layer 223 are used to make the sunlight directly incident on the Fresnel lens 30 after two reflections; and the third stage is noon. At the moment, the angle of sunshine is At this time, both the high and low reflective plates are vertical, so that the sunlight is directly parallel to the reflector device 20 and directly incident on the Fresnel lens 30. In each sunshine stage, the principle of the action of the sunlight reflected by the louver-type reflecting plate device 20 and perpendicularly incident on the Fresnel collecting lens 30, and the relationship between the width, inclination and the angle of the respective reflecting plates are respectively described as follows:

(1) The first stage (the sunshine angle is 75 degrees to 37.5 degrees): when the sunshine angle is 75 degrees to 37.5 degrees, it is only necessary to rotate the first layer 213 (as shown in Fig. 4). The sunlight is reflected perpendicularly incident to the Fresnel lens 30 via the reflector device to obtain the maximum amount of light collected. If the width of the first layer 213 is set to , Mathematical formula 3 and Mathematical formula 4 are obtained from the triangular geometric relationship: [Math 3] [Math 4] (2) The second stage (the sunshine angle is 37.5 degrees to 0.5 degrees): when the sunshine angle is 37.5 degrees to 0.5, the first layer plate 213 and the second layer plate 223 are required to be deflected to cause the sunlight to pass through the reflection. After the plate device 20 reflects, the Fresnel lens (as shown in Fig. 2) is perpendicularly incident to satisfy the maximum amount of light collected. If the width of the second layer 223 is And the diameter of the Fresnel lens 30 is The width of the first layer 213 is , mathematical equation 5 and mathematical expression 6 can be obtained from the triangular geometric relationship: [Math 5] [Math 6]

The third stage (at noon time, the sun angle is zero): at this stage, the sunlight is incident perpendicularly, so that the Fresnel lens 30 can be directly incident perpendicularly without reflection by the reflector device 20, as shown in FIG. . Since the sunlight is directly incident on the Fresnel lens 30, it is not affected by the absorption of the material of the reflector device 20, so the light collecting effect during this period is optimal. In addition, since the sunlight angle of the sunlight is symmetrically distributed in the upper and lower afternoon periods, and if the louver type reflecting plate has a double-sided reflection characteristic, the inclination direction of the reflection plate in the afternoon period is opposite to the inclination direction of the morning period (ie, by the inverse The hour hand direction is clockwise).

Since the solar concentrating system of the present invention uses a louver type reflecting plate as a chasing mechanism, in order to prevent sun rays of different sunlight angles from being blocked by the adjacent reflecting plate device 20, the spacing between adjacent two first ply plates 213 Need to be greater than or equal to As shown in Figure 6. Because the diameter of the Fresnel collecting lens 30 is , the width of the first layer is And the width of the second layer is Then, the minimum distance between two adjacent first layer plates 213 can be calculated by the following mathematical formula . The following mathematical expression 7 is known from the geometric relationship of Fig. 6: [Math 7]

The minimum pitch of the adjacent two first layer plates 213 is calculated by the following Mathematical Formula 8 as follows: [Math 8]

After the spacing between two adjacent first layer plates 213 is determined, the position of the second layer plate 223 and the spacing between two adjacent second layer plates 223 can be obtained through the geometric relationship of FIG. 7, but the incidence must be considered at the same time. The light must pass through the center point of the second ply 223 and must also be the center point when it reaches the first ply 213. The horizontal spacing between the second ply 223 and the first ply 213 as in the geometric relationship of FIG. And the vertical pitch C can be known by the following Mathematical Formula 9 and Mathematical Formula 10: [Math 9] [Math 10]

According to the above mathematical formulas, the one-hundred-reflection plate chasing mechanism 1 can be modularized. For different spatial and positional requirements, the size and inclination of each layer of reflector device 20 can also be adjusted through Mathematical Formula 7 to Mathematical Formula 10. And location in order to achieve the goals required by the present invention.

The actual finished product of the louver type reflecting plate chasing mechanism 1 of the present invention is as shown in Fig. 10, and a daylight meter is placed above the Fresnel collecting lens layer to display the vertical direction of the reflecting plate device 20 via the chasing mechanism of the present invention. Under the solar energy value, at the same time compare the energy value (direct exposure) of the sun exposure directly placed on the open ground, the measurement time is from 11:15 am to 3:30 pm, the measurement The obtained illuminance values are shown in Table 3, and the actual comparison energy of the solar tracking mechanism of the present invention and the direct exposure sunlight is as shown in Fig. 8, and the weather is unstable between 11:30 am and 1 pm. Therefore, the measured value varies greatly, and the weather is relatively stable between 1:00 pm and 3:00 pm, so the measured value is also relatively stable. It can be seen that the tracking mechanism with the present invention is indeed higher than the energy received by direct exposure. . Figure 9 is a graph showing the energy difference between the sun-visual meter and the direct-exposure mechanism. The figure shows that the difference between the sun and the cloud is about 600W. Obviously, the louver-type reflector is proposed to match the invention. Japanese institutions can indeed increase the receiving energy.

Referring to FIG. 10 and FIG. 11 , in order to implement the sun-tracking method of the present invention, the solar louver-type reflecting plate chasing mechanism 1 of the present invention is realized by the following components, and includes: a platform 10 The platform 10 is provided with at least one first reflecting device 21 and at least one second reflecting device 22, and the first reflecting device 21 and the second reflecting device 22 have a height difference; the first reflecting device 21 is composed of a group The first pillar 211 supports a first layer 213, and the first layer 213 has an inner reflecting surface 214, and the first layer is driven by a first driving device 212 provided on one of the first pillars 211. The plate 213 is rotated; and the second reflecting device 22 is raised by a set of second pillars 221 to a second layer 223, and the second layer 223 has an outer reflecting surface 224 and is second A second driving device 222 is disposed on the pillar 221 to drive the second layer plate 223 to rotate.

Further, the first reflecting device 21 and the second reflecting device 22 of the present invention may be plural and arranged in a staggered manner, in particular, when the width of the Fresnel collecting lens 30 is X, and the first layer When the width of the plate 213 is set to Y, then the And when the width of the second layer 223 is set to Z, then the And the minimum pitch of each first layer plate 213 is set to A, then the relationship between A and Y is set to And the horizontal spacing of the first layer 213 and the second layer 223 is set to B, the vertical spacing is set to C, and the relationship between B and A is B=A/2, and C and B Relationship is .

In particular, the solar louver type reflector rear-tracking mechanism 1 of the present invention further includes a controller (not shown), and the controller is electrically connected to the first driving device 212 and the second driving device 222, and The controller contains a control program 50. Moreover, the program of the control program 50 is set such that when the sunshine angle θ is 75 degrees to 37.5 degrees, the first driving device 212 is deflected by the first layer plate 213; when the sunshine angle θ is 37.5 degrees to 0.5 degrees Celsius The first driving device 212 and the second driving device 222 are used to deflect the first layer plate 213 and the second layer plate 223 by an angle function; when the sun angle θ is zero, the first driving device 212 is configured. The second driving device 222 drives the first layer plate 213 and the second layer plate 223 to be vertical. The angle function is such that the inclination angle θ2 of the second layer plate 223 is equal to the inclination angle θ1 of the first layer plate 213 plus 1/2 times the sun exposure angle θ.

In summary, the present invention relates to a "solar louver type reflector device chasing Japanese method and mechanism thereof", which uses a non-imaging optical design concept, an optical geometric analysis, and an optical mechanism to design a louver type reflector. The Japanese institution has the structure of the Japanese chasing mechanism which is very simple and low in cost. If the surface is plated with a high-purity reflective film, the sunlight is not absorbed by the material of the reflector device, thereby affecting the light collecting efficiency. In consideration of the incident angle of sunlight and the change with the sunshine time, the solar light is redirected and vertically downward by appropriately arranging the louver-type reflector device and driving the reflector device to a proper tilt angle, and then using the Philippine Nyer collecting lens, the light can be concentrated on the solar cell, and the solar energy can be converted into electric energy and utilized, and any incident angle of sunlight within ±75 degrees with the normal to the ground plane can be vertically incident to the The Fresnel collecting lens has a collecting efficiency of more than 92% in the total sunshine time. Therefore, the louver type reflecting plate chasing mechanism designed by the present invention can be applied to a general solar concentrator system, and the mechanism is simple and cost-effective. Low cost and low energy consumption. Moreover, its constituent institutions have not been seen in various books or publicly used, and it is in line with the requirements for invention patent applications, so please ask the Bureau of the Ming Dynasty to grant patents as soon as possible.

It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the present invention are not beyond the scope of the specification and drawings. In spirit, it should be within the scope of the present invention and combined with Chen Ming.

(a), (b), (c) ‧ ‧ method steps (1) ‧ ‧ venetian reflectors chasing the Japanese (10) ‧ ‧ platform (20) ‧ ‧ reflector assembly (21) ‧ ‧First Reflector (211)‧‧‧First Pillar (212)‧‧‧First Drive (213)‧‧‧First Laminate (22)‧‧‧First Reflector (221)‧‧‧ Second pillar (222) ‧ ‧ second drive (223) ‧ ‧ second laminate (30) ‧ ‧ Fresnel collection lens (40) ‧ ‧ solar cells (50) ‧ ‧ control Program

Fig. 1 is a flow chart showing the method of chasing the solar louver type reflector device of the present invention. Fig. 2 is a schematic view showing the structure of the solar louver type reflector device of the present invention. Fig. 3 is a schematic diagram showing the geometrical optical analysis of the angle function when the first layer plate and the second layer plate of the reflector device of the present invention are linked and deflected. Fig. 4 is a schematic view showing that the reflecting plate device of the invention is only yawed at the first layer in the sunrise. Fig. 5 is a schematic view showing the first layer and the second layer of the reflector device being vertical when the sun of the invention is in the middle of the day. Figure 6 is a schematic illustration of a staggered arrangement of a plurality of reflector devices of the present invention. Figure 7 is another schematic view of the staggered arrangement of a plurality of reflector devices of the present invention. Figure 8 is a graph comparing the energy of the actual measurement of the Japanese tracking mechanism and the direct exposure of the present invention. Figure 9 is a graph showing the energy difference between the Japanese tracking mechanism and the actual measurement of direct exposure. Fig. 10 is a perspective view showing the solar louver type reflecting plate chasing Japanese body of the present invention. Figure 11 is a plan view of the solar louver type reflecting plate chasing mechanism of the present invention. Fig. 12 is a block diagram showing the program of the control program of the solar louver type reflector in the present invention. Figure 13: It is a single-axis chasing system for the Japanese solar louver type reflector. Figure 14: It is a two-axis chasing system for the Japanese solar louver type reflector.

(a), (b), (c) ‧ ‧ steps

Claims (10)

A solar louver type reflector device tracking method comprises the following steps: (a) a high-rise, low-level reflector step, wherein at least one first layer and at least one second layer are disposed on a platform, Wherein the first layer and the second layer have a height drop; (b) a step of chasing the sun, the first layer and the second layer are deflected individually or in conjunction with each other; and (c) a reflection In the step, after the solar light is reflected by the second layer to the first layer, a Fresnel collecting lens located below the reflecting plate is vertically incident, and the solar cells located therein are collected by light. According to the solar louver type reflecting plate device according to claim 1, wherein the sun exposure angle θ of the step (b) is 75 degrees to 37.5 degrees, only the first layer is deflected; if the sun angle θ When the angle is 37.5 degrees to 0.5 degrees, the first layer board and the second layer board are deflected by an angle function; if the sun angle θ is zero, the first layer board and the second layer board are both vertical. According to the solar louver type reflector device of claim 2, the angle function of the step (b) is set such that the inclination angle θ2 of the second layer is equal to the inclination angle θ1 of the first layer. 1/2 times the sun angle θ. According to the solar louver type reflector device of claim 3, wherein the first layer and the second layer of the step (b) are plural and mutually staggered, and the Fresnel When the width of the collecting lens is set to X, when the width of the first layer is Y, the And when the width of the second layer is set to Z, the And the minimum spacing of each first layer is set to A, then the relationship between A and Y is set to . According to the solar louver type reflector device of claim 4, the horizontal spacing of the first layer and the second layer of the step (b) is set to B, and the vertical spacing is set to C. , and the relationship between B and A is B=A/2, and the relationship between C and B is . A solar louver type reflecting plate chasing mechanism includes: a platform, wherein the platform is provided with at least one first reflecting device and at least one second reflecting device, and the first reflecting device and the second reflecting device have a height The first reflecting device is configured to support a first layer by a set of first pillars, and the first layer has an inner reflecting surface, and a first driving device is disposed on one of the first pillars Driving the first layer of the substrate for rotation; the second reflecting means is raised by a set of second pillars to a second layer, and the second layer has an outer reflecting surface and is supported by one of the second pillars a second driving device is configured to drive the second layer to rotate; and a controller, wherein the controller is electrically connected to the first driving device and the second driving device, and the controller includes a control program . The solar louver type reflector rear-tracking mechanism according to claim 6, wherein the first reflecting device and the second reflecting device are modularized to form a plurality of linear arrays. The solar louver type reflecting plate chasing mechanism according to claim 6 or 7, wherein the first reflecting means and the second reflecting means are plural and mutually staggered, and the Fresnel collecting lens is further When the width is set to X, and the width of the first layer is Y, then the width of the second layer is Z, then the minimum spacing of each first layer is set to A, the relationship between A and Y is set, and the horizontal spacing of the first layer and the second layer is set to B, the vertical spacing is set to C, and the relationship between B and A is B=A. /2, and the relationship between C and B is. According to the solar louver type reflector rear-tracking mechanism of claim 8, wherein the program of the control program is set to deflect the first driving device when the sunshine angle θ is 75 degrees to 37.5 degrees. When the sunshine angle θ is 37.5 degrees to 0.5 degrees, the first driving and the second driving device respectively deflect the first layer and the second layer by an angle function; when the sunshine angle θ is When the time is zero, the first driving device and the second driving device respectively drive the first layer board and the second layer board to be vertical. According to the solar louver type reflecting plate chasing mechanism according to claim 9, wherein the angle function is set such that the inclination angle θ2 of the second layer is equal to the inclination angle θ1 of the first layer and 1/2 times of the sunshine. Angle θ.