Solar power generation system

Abstract

The invention relates to the field of solar power generation, in particular to a solar power generation system which comprises a cell panel used for converting light energy into electric energy and a cooling box used for containing clear water, a surrounding frame is arranged on the edge of the rear side of the cell panel in a surrounding mode, a baffle is connected into the surrounding frame in a sealed mode, and two connecting pipes are arranged on the baffle. The two connecting pipes are communicated with the two sides of the cooling box through hoses respectively, two circulating pipes are fixed to the cooling box and used for water inflow and water outflow respectively, a middle plate is fixed to the center of the end, away from the battery panel, of the enclosure frame, a center pipe penetrating through the middle plate is fixed to the middle of the baffle, an annular plate is coaxially fixed to the rear end of the center pipe, and the annular plate penetrates through the middle plate. And a spring I is arranged between the annular plate and the middle plate. The photovoltaic conversion efficiency is prevented from being influenced by over-high temperature of the cell panel.

Description

Technical Field

[0001] The present invention relates to the field of solar power generation, and particularly to a solar power generation system. Background Art

[0002] Solar power generation is a process of directly converting solar energy into electrical energy by utilizing the photovoltaic effect of semiconductor materials. Its core principle is that when sunlight shines on the surface of the battery panel made of semiconductor materials, electrons in the semiconductor absorb photon energy and jump from the valence band at a low energy level to the conduction band at a high energy level, thus generating electron-hole pairs. Then, through charge separation and output, direct current is generated. In this process, when the semiconductor material absorbs photon energy, only photons with energy greater than the band gap can excite electron transitions. When the photon energy is much greater than the band gap, the excess energy is released in the form of heat, which causes the temperature of the semiconductor material to rise. The performance of the semiconductor material will decrease as the temperature rises, resulting in a reduction in the photoelectric conversion efficiency of the battery panel. Summary of the Invention

[0003] The purpose of the present invention is to provide a solar power generation system to avoid the battery panel from getting too hot and affecting the photoelectric conversion efficiency.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A solar power generation system includes a battery panel for converting light energy into electrical energy and a cooling tank for containing clear water. A surrounding frame is provided around the rear edge of the battery panel. A baffle is hermetically connected within the surrounding frame. Two connecting pipes are provided on the baffle. The two connecting pipes are respectively communicated with both sides of the cooling tank through hoses. Two circulating pipes are fixed on the cooling tank, and the two circulating pipes are respectively used for water inlet and water outlet.

[0006] A middle plate is fixed at the center of the end of the surrounding frame away from the battery panel. A central pipe passing through the middle plate is fixed in the middle of the baffle. A ring plate is coaxially fixed at the rear end of the central pipe. A spring Ⅰ is provided between the ring plate and the middle plate.

[0007] A convex arc plate extends backward from the edge of the ring plate. A portal plate is fixed in the middle of the middle plate. A central shaft coaxial with the central pipe is rotatably mounted on the portal plate. A sliding column is fixed on the side surface of the central shaft.

[0008] The central shaft passes through the central pipe, and a plurality of stirring plates Ⅰ are fixed at the front end of the central shaft.

[0009] Convex cavities extend backward on the baffle. Stirring shafts are rotatably mounted on the two convex cavities. A plurality of stirring plates Ⅱ are fixed on the stirring shafts. The two connecting pipes are respectively arranged on the two convex cavities.

[0010] On the left and right sides of the middle plate, transmission shafts are symmetrically rotatably arranged. A driving wheel is fixed on the central shaft. The two transmission shafts are both in meshing transmission connection with the driving wheel. The rear ends of the two stirring shafts are both concavely provided with square holes coaxially. Square shafts are slidably arranged in the two square holes. Spring II is arranged between the two square shafts and the stirring shafts respectively, so that the two square shafts respectively abut against and mesh with the two transmission shafts.

[0011] One-way valves are installed in both of the two connecting pipes.

[0012] A fixed shaft is fixed at the upper end of the cooling box. The upper end of the fixed shaft is connected with a socket. A C-shaped plate connected to the surrounding frame is fixed on the socket.

[0013] Fixed pins are fixed at the left and right ends of the surrounding frame respectively. The two fixed pins are respectively penetrated and rotatably connected to the two ends of the C-shaped plate. A transverse shaft is rotatably penetrated horizontally on the C-shaped plate. The two ends of the transverse shaft are respectively connected by chain drive to the two fixed pins. A worm gear I is fixed at the center of the transverse shaft. A worm I meshing with the worm gear I is rotatably arranged at the upper end of the socket.

[0014] A worm gear II is arranged at the lower end of the socket. A worm II meshing with the worm gear II is rotatably arranged on the cooling box. Description of the Drawings

[0015] Figure 1 and Figure 2 is a schematic structural diagram of a solar power generation system;

[0016] Figure 3 is a schematic diagram of the partial structure of a solar power generation system;

[0017] Figure 4 is a schematic structural diagram of a battery panel and a surrounding frame;

[0018] Figure 5 and Figure 6 is a schematic structural diagram of a baffle;

[0019] Figure 7 is a schematic structural diagram of a central shaft, a stirring plate I, a stirring shaft and a stirring plate II;

[0020] Figure 8 is a schematic structural diagram of a central shaft and a stirring plate I;

[0021] Figure 9 is a schematic structural diagram of a stirring shaft and a stirring plate II;

[0022] Figure 10 is a schematic structural diagram of a C-shaped plate and a transverse shaft;

[0023] Figure 11 is a schematic structural diagram of a cooling box.

[0024] In the figure:

[0025] Solar panel 101; surrounding frame 102; fixing pin 103; middle plate 104; portal plate 105;

[0026] Baffle 201; central tube 202; ring plate 203; spring I 204; convex arc plate 205; convex cavity 206; connecting tube 207;

[0027] Central shaft 301; stirring plate I 302; sliding column 303; driving wheel 304;

[0028] Stirring shaft 401; stirring plate II 402; square hole 403; square shaft 404; spring II 405; transmission shaft 406;

[0029] C-shaped plate 501; horizontal shaft 502; worm gear I 503; worm I 504; socket 505; worm gear II 506;

[0030] Cooling box 601; fixed shaft 602; worm II 603; circulation pipe 604; Detailed implementation mode

[0031] As Figures 1-11 shown, a solar power generation system is described in detail as follows:

[0032] A solar power generation system includes a solar panel 101 for converting light energy into electrical energy and a cooling box 601 for containing clean water. A surrounding frame 102 is provided around the rear edge of the solar panel 101. A baffle 201 is hermetically connected inside the surrounding frame 102. Two connecting tubes 207 are provided on the baffle 201. The two connecting tubes 207 are respectively communicated with both sides of the cooling box 601 through hoses. Two circulation pipes 604 are fixed on the cooling box 601, and the two circulation pipes 604 are respectively used for water inlet and water outlet.

[0033] A cooling cavity is formed on the back side of the solar panel 101 by the solar panel 101, the surrounding frame 102 and the baffle 201. The cooling cavity is filled with clean water, and by contacting the back side of the solar panel 101, the temperature of the solar panel 101 is reduced, effectively avoiding the too high temperature of the solar panel 101 and affecting the photoelectric conversion efficiency;

[0034] Moreover, by the communication of the two connecting tubes 207 and the hoses with the cooling box 601, the cooling cavity is communicated with the cooling box 601, so that the clean water in the cooling cavity can be communicated, and then the heat is transferred to the clean water in the cooling box 601, ensuring the cooling efficiency of the clean water in the cooling cavity for the solar panel 101; at the same time, by the arrangement of the two circulation pipes 604, the hot water in the cooling box 601 is used and supplemented, so as to achieve the purpose of reusing the heat of the solar panel 101.

[0035] Among them, the solar power generation system further includes: an inverter for converting the direct current generated by the battery panel into alternating current for household or grid use; an energy storage system (such as a storage battery) for storing excess electric energy for power supply on cloudy days or at night; and a cable for transmitting electric energy.

[0036] Among them, the battery panel 101 is a monocrystalline silicon solar cell, and its structure includes:

[0037] A transparent conductive film (such as indium tin oxide): located at the top of the battery for transmitting light and collecting current;

[0038] A P-type silicon substrate: mainly doped with boron to form carriers mainly composed of holes;

[0039] An N-type silicon thin layer: located on the surface of the P-type substrate, doped with phosphorus to form carriers mainly composed of electrons;

[0040] A back electrode and a front electrode: respectively used to lead out the charges in the P region and the N region.

[0041] The working process of the battery panel 101 is as follows: sunlight shines on the battery surface, and photons are absorbed by the semiconductor material; photons with sufficient energy excite electrons to jump from the valence band to the conduction band, generating free electrons and holes; the built-in electric field of the PN junction pushes the electrons to the N region and the holes to the P region, forming charge separation; the electrons in the N region flow through the front electrode and the external circuit to the back electrode of the P region, generating direct current.

[0042] Furthermore:

[0043] A middle plate 104 is fixedly installed at the center of the end of the surrounding frame 102 away from the battery panel 101. A central tube 202 penetrating the middle plate 104 is fixedly installed in the middle of the baffle 201. A ring plate 203 is coaxially fixedly installed at the rear end of the central tube 202. A spring I 204 is arranged between the ring plate 203 and the middle plate 104.

[0044] Through the elastic force of spring I 204, the ring plate 203 is pushed backward away from the middle plate 104. Subsequently, the ring plate 203 drives the baffle 201 through the central tube 202 to move away from the battery plate 101 in the surrounding frame 102 and press against the middle plate 104, making the cooling cavity in the state of maximum internal space. At this time, when the ring plate 203 is pressed, the ring plate 203 drives the baffle 201 to approach the battery plate 101, thereby reducing the space of the cooling cavity, thus forming extrusion on the clear water in the cooling cavity, causing the clear water to enter the cooling box 601 through the two connecting tubes 207. When the ring plate 203 is released, the elastic force of spring I 204 will again push the ring plate 203 to drive the baffle 201 away from the battery plate 101, thereby increasing the space of the cooling cavity, then reducing the pressure in the cooling cavity, and then pumping the clear water in the cooling box 601 back into the cooling cavity through the two connecting tubes 207, forming a rapid exchange flow of clear water between the cooling cavity and the cooling box 601, avoiding poor fluidity between the clear water in the cooling cavity and the cooling box 601, affecting the heat dissipation of the battery plate 101, and then affecting the photoelectric conversion efficiency.

[0045] Furthermore:

[0046] A convex arc plate 205 extends backward from the edge of the ring plate 203. A portal plate 105 is fixed in the middle of the middle plate 104. A central shaft 301 coaxial with the central tube 202 rotates on the portal plate 105, and a sliding column 303 is fixed on the side of the central shaft 301.

[0047] Through the first motor installed on the portal plate 105, the central shaft 301 is driven to rotate the central shaft 301 with the sliding column 303 rotating around the central shaft 301. The rotating sliding column 303 will contact and squeeze the convex arc plate 205, causing the convex arc plate 205 to push the ring plate 203 to squeeze spring I 204 until the sliding column 303 slides past the convex arc plate 205. Then, the elastic force of spring I 204 will again push the ring plate 203 to slide backward to its original position until the sliding column 303 slides to the convex arc plate 205 again. Repeat the above actions. Thus, every time the sliding column 303 rotates one circle, it squeezes the convex arc plate 205 once, completing one reciprocating slide of the baffle 201 in the surrounding frame 102, that is, carrying out a rapid circulation of clear water between the cooling cavity and the cooling box 601;

[0048] Among them, the convex arc plate 205 is provided with a slope on the side close to the sliding column 303, which facilitates the sliding column 303 to gradually squeeze the convex arc plate 205 along the slope, so that the convex arc plate 205 pushes the ring plate 203 to squeeze the spring I 204. Multiple convex arc plates 205 can be provided, so as to increase the number of times of rapid circulation of the clear water between the cooling cavity and the cooling tank 601 when the rotational speed of the central shaft 301 is constant. At the same time, the sliding column 303 and the central shaft 301 can be set to be rotationally connected, so that when the sliding column 303 contacts the convex arc plate 205, the sliding column 303 will roll on the slope of the convex arc plate 205, reducing the contact wear between the sliding column 303 and the convex arc plate 205 and facilitating the sliding column 303 to turn past the convex arc plate 205.

[0049] As Figure 8 shown:

[0050] The central shaft 301 penetrates through the central tube 202, and a plurality of stirring plates I 302 are fixed at the front end of the central shaft 301.

[0051] When the central shaft 301 rotates, it drives the sliding column 303 to squeeze the convex arc plate 205, so that the space of the cooling cavity increases and decreases reciprocally, and then cooperates with the cooling tank 601 to complete the exchange flow of the clear water in the cooling cavity. At the same time, it can also drive a plurality of stirring plates I 302 to stir the clear water in the cooling cavity, so that the clear water in the cooling cavity flows in the cooling cavity, ensuring that the temperature of the clear water in the cooling cavity is uniform. Cooperating with the inflow and outflow of the clear water at the two connecting pipes 207, the low-temperature water entering from the cooling tank 601 is stirred by the rotating stirring plates I 302 and quickly mixed into the high-temperature water in the cooling cavity, so that the clear water in the cooling cavity is evenly cooled.

[0052] As Figures 5-6 shown:

[0053] The baffle 201 extends backward with a convex cavity 206. Stirring shafts 401 are rotatably mounted on the two convex cavities 206. A plurality of stirring plates II 402 are fixed on the stirring shafts 401. The two connecting pipes 207 are respectively arranged on the two convex cavities 206.

[0054] Since the central shaft 301 is in a stationary state relative to the baffle 201, it follows that the position trajectories of the plurality of stirring plates I 302 in the cooling cavity are also fixed. When the baffle 201 is away from the battery plate 101, it is in a water pumping state. Then, when the baffle 201 gradually moves away from the stirring plates I 302, the low-temperature water enters from the connecting pipe 207 and cannot flow to the stirring plates I 302, affecting the mixing efficiency of the low-temperature water and the high-temperature water.

[0055] Thus, two convex cavities 206 are provided. Through the provision of the two convex cavities 206, the low-temperature water entering at the two connecting pipes 207 first enters the two convex cavities 206. The driving stirring shaft 401 drives the plurality of stirring plates II 402 to rotate, so that the low-temperature water is first mixed evenly in the convex cavities 206, and then flows out from the convex cavities 206 into the cooling cavity. Thus, the low-temperature water entering at the connecting pipe 207 first mixes with a small part of the high-temperature water, and then mixes with the entire high-temperature water, improving the mixing efficiency of the low-temperature water and the high-temperature water, and further improving the efficiency and effect of the low-temperature water mixing into the high-temperature water to cool the high-temperature water.

[0056] As Figure 7 shown:

[0057] Driving shafts 406 are symmetrically and rotatably provided on the left and right sides of the middle plate 104. A driving wheel 304 is fixed on the central shaft 301. The two driving shafts 406 are both in meshing transmission connection with the driving wheel 304. The rear ends of the two stirring shafts 401 are both concavely provided with square holes 403 coaxially. Square shafts 404 are both slidably provided in the two square holes 403. Spring II 405 is provided between the two square shafts 404 and the stirring shafts 401, so that the two square shafts 404 respectively abut against and mesh with the two driving shafts 406.

[0058] Since the stirring shaft 401 is rotatably connected to the convex cavity 206, even if the stirring shaft 401 will reciprocate back and forth with the baffle 201, while the driving shaft 406 rotates on the middle plate 104 and remains stationary. Thus, spring II 405 is provided, and at the same time, the elastic force of spring II 405 pushes the bevel gear on the square shaft 404 to abut tightly against the bevel gear on the driving shaft 406. Thus, when the baffle 201 reciprocates back and forth, the square shaft 404 reciprocates in the square hole 403, and the square shaft 404 and the driving shaft 406 maintain the two bevel gears in a meshing transmission state all the time through the elastic force of spring II 405;

[0059] That is, when the central shaft 301 drives the driving wheel 304 to rotate, the driving wheel 304 simultaneously drives the two driving shafts 406 to rotate. The two driving shafts 406 simultaneously drive the two square shafts 404 to rotate, and then drive the two stirring shafts 401 to rotate, so as to always keep stirring the clear water in the convex cavity 206.

[0060] Thus, one first motor power source is realized to simultaneously drive the baffle 201 to reciprocate back and forth, the plurality of stirring plates I 302 stir in the cooling cavity, and the two stirring shafts 401 drive the stirring plates II 402 to stir in the two convex cavities 206.

[0061] Furthermore:

[0062] In order to make the flow of clear water between the cooling cavity and the cooling tank 601 directional, check valves are installed in both connecting pipes 207. When the baffle 201 approaches the solar panel 101, reducing the space and increasing the pressure in the cooling cavity, the check valve in the left connecting pipe 207 opens, and the check valve in the right connecting pipe 207 closes, allowing the clear water to only drain from the left connecting pipe 207. When the baffle 201 moves away from the solar panel 101, increasing the space and reducing the pressure in the cooling cavity, the check valve in the left connecting pipe 207 closes, and the check valve in the right connecting pipe 207 opens, allowing the clear water to only enter from the right connecting pipe 207. Thus, the clear water in the cooling cavity only enters the cooling tank 601 through the left connecting pipe 207, and the clear water in the cooling tank 601 only enters the cooling cavity from the right connecting pipe 207, enabling a one-way circulation of the clear water between the two, thereby improving the overall fluidity of the clear water in the cooling cavity and, at the same time, enhancing the cooling efficiency of the solar panel 101.

[0063] It should be noted that the check valve is a ball check valve, which opens or closes by using a sphere under fluid pressure and maintains the seal through a spring or fluid pressure, sufficient for the flow and seal of the clear water under the low-pressure working conditions of this application.

[0064] As Figures 10-11 shown:

[0065] A fixed shaft 602 is fixed to the upper end of the cooling tank 601. The upper end of the fixed shaft 602 is connected to a socket 505, and a C-shaped plate 501 connected to the surrounding frame 102 is fixed to the socket 505.

[0066] Through the cooperation of the C-shaped plate 501, the socket 505, and the fixed shaft 602, the cooling tank 601 supports the solar panel 101. Moreover, since the cooling tank 601 is filled with clear water, it has sufficient stability to ensure the overall stability.

[0067] Based on the above embodiments, in order to facilitate adjusting the orientation of the solar panel 101 while the cooling tank 601 remains stationary, the following features are provided:

[0068] Fixed pins 103 are fixed to both the left and right ends of the surrounding frame 102. The two fixed pins 103 are respectively connected through rotation to the two ends of the C-shaped plate 501. A horizontal shaft 502 is rotatably penetrated through the C-shaped plate 501 horizontally. The two ends of the horizontal shaft 502 are respectively connected by chain drive to the two fixed pins 103. A worm wheel I 503 is fixed to the center of the horizontal shaft 502, and a worm I 504 meshing with the worm wheel I 503 is rotatably provided at the upper end of the socket 505.

[0069] A worm wheel II 506 is provided at the lower end of the socket 505, and a worm II 603 meshing with the worm wheel II 506 is rotatably provided on the cooling tank 601.

[0070] Among them, sprocket I is fixed on each of the two fixed pins 103, and two sprocket II are fixed on the horizontal shaft 502. By rotating the driving worm I 504, the worm I 504 can engage and drive the worm wheel I 503 to drive the horizontal shaft 502 to rotate about the horizontal shaft 502. Subsequently, the horizontal shaft 502 drives the two sprocket I to rotate through two transmission chains via the two sprocket II. Then, the two sprocket I drive the surrounding frame 102 to rotate in the up and down directions about the fixed pin 103 through the two fixed pins 103, so as to change the orientation of the solar panel 101 in the up and down directions;

[0071] By means of the driving worm II 603, it can engage and drive the worm wheel II 506 to drive the socket 505 to rotate in the left and right directions on the fixed shaft 602. Subsequently, through the C-shaped plate 501 and the surrounding frame 102, the orientation of the solar panel 101 is changed in the left and right directions;

[0072] Among them, due to the self-locking function of the worm and worm wheel transmission itself, after the orientation of the solar panel 101 is adjusted, this state can be self-locked.

Claims

1. A solar power generation system, characterized in that: It includes a solar panel for converting light energy into electrical energy and a cooling box for containing clean water. A surrounding frame is provided around the rear edge of the solar panel. A baffle is hermetically connected within the surrounding frame. Two connecting pipes are provided on the baffle. The two connecting pipes are respectively communicated with both sides of the cooling box through hoses. Two circulating pipes are fixed on the cooling box, and the two circulating pipes are respectively used for water inlet and water outlet.

2. The solar power generation system according to claim 1, characterized in that: A middle plate is fixed at the center of the end of the surrounding frame away from the solar panel. A central pipe penetrating the middle plate is fixed in the middle of the baffle. A ring plate is coaxially fixed at the rear end of the central pipe. A spring I is provided between the ring plate and the middle plate.

3. A solar power generation system according to claim 2, characterized in that: A convex arc plate extends backward from the edge of the ring plate. A portal plate is fixed in the middle of the middle plate. A central shaft coaxial with the central pipe is rotatably mounted on the portal plate. A sliding column is fixed on the side surface of the central shaft.

4. A solar power generation system according to claim 2, characterized in that: The central shaft penetrates the central pipe, and a plurality of stirring plates I are fixed at the front end of the central shaft.

5. A solar power generation system according to claim 2, characterized in that: Convex cavities extend backward on the baffle. Stirring shafts are rotatably mounted on both convex cavities. A plurality of stirring plates II are fixed on the stirring shafts. The two connecting pipes are respectively arranged on the two convex cavities.

6. A solar power generation system according to claim 5, characterized in that: Drive shafts are symmetrically and rotatably mounted on the left and right sides of the middle plate. A driving wheel is fixed on the central shaft. The two drive shafts are both in meshing transmission connection with the driving wheel. Square holes are recessed coaxially at the rear ends of the two stirring shafts. Square shafts are slidably arranged in the two square holes. Springs II are provided between the two square shafts and the stirring shafts respectively, so that the two square shafts respectively abut and mesh with the two drive shafts.

7. A solar power generation system according to claim 2, wherein: Check valves are installed in both connecting pipes.

8. A solar power generation system according to claim 1, characterized in that: A fixed shaft is fixed at the upper end of the cooling box. A socket is connected to the upper end of the fixed shaft. A C-shaped plate connected to the surrounding frame is fixed on the socket.

9. A solar power generation system according to claim 8, characterized in that: Fixed pins are respectively fixed at the left and right ends of the surrounding frame. The two fixed pins are respectively penetrated and rotatably connected with the two ends of the C-shaped plate. A transverse shaft is rotatably penetrated horizontally on the C-shaped plate. The two ends of the transverse shaft are respectively connected by chain drive with the two fixed pins. A worm gear I is fixed at the center of the transverse shaft. A worm I meshing with the worm gear I is rotatably mounted at the upper end of the socket.

10. A solar power generation system according to claim 9, characterized in that: A worm gear II is provided at the lower end of the socket. A worm II meshing with the worm gear II is rotatably mounted on the cooling box.

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