A power generation system for improving solar photovoltaic efficiency

Abstract

The present application discloses a power generation system for improving the efficiency of solar photovoltaic, which relates to the technical field of power generation equipment. A liquid cooling device is added to the back of a traditional solar cell panel; a thin aluminum plate is arranged behind the cell panel, a back plate with a circulation groove is arranged on the back of the thin aluminum plate, a circulation water tank is arranged inside the back plate, and antifreeze and anticorrosion liquid is canned inside the water tank as a circulation cooling medium; and a temperature sensing device is arranged in the circulation system, and whenever the temperature of the solar cell panel is higher than 25 degrees Celsius, the flow of liquid in the back plate is controlled to cool the cell panel; the power generation system with improved solar photovoltaic efficiency can effectively improve the service life of the photovoltaic panel, can ensure the stable and continuous operation of the entire system in high temperature difference areas, and has high photovoltaic efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation equipment, and in particular to a power generation system for improving solar photovoltaic efficiency. Background Art

[0002] Solar energy is a pollution-free, inexhaustible new energy source. However, the high temperature during photovoltaic power generation seriously affects the power generation efficiency and service life of silicon-based photovoltaic panels. Experimental research and engineering practice show that the ideal operating temperature of solar photovoltaic panels is 25°C. For every 1°C increase in temperature, the relative power generation efficiency of silicon-based photovoltaic panels will decrease by 0.45% to 0.65%, and the aging rate will increase by 0.1 times.

[0003] The surface temperature of photovoltaic panels is high. The current methods to solve this problem mainly include setting up air cooling and water cooling systems; air cooling is divided into natural convection circulation cooling, cooling fan cooling or a combination of the two. Although the air cooling system is simple, the conversion efficiency and power improvement of silicon-based photovoltaic panels are not obvious enough; the water cooling system is a cooling method in which water is placed in a pipe under the back of the photovoltaic panel or on the surface of the silicon-based photovoltaic panel, and the external booster device provides circulation power for the water. The water cooling system has a large cooling range, but due to the use of water circulation, when used in high-altitude areas with large temperature differences between day and night, it will cause the pipes or photovoltaic panels to be damaged due to frost heave and difficult to work normally.

[0004] Therefore, there is a need for a power generation system that can effectively increase the service life of photovoltaic panels, ensure the stable and continuous operation of the entire system in high temperature difference areas, and improve the efficiency of solar photovoltaic power generation. Summary of the invention

[0005] The embodiments of the present application solve the technical problems in the prior art of photovoltaic power generation systems, such as short service life of photovoltaic panels, poor stability in areas with high temperature differences, and relatively low photovoltaic efficiency, by providing a power generation system that improves solar photovoltaic efficiency. The power generation system that improves solar photovoltaic efficiency can effectively improve the service life of photovoltaic panels, ensure stable and continuous operation of the entire system in areas with high temperature differences, and has high photovoltaic efficiency.

[0006] The embodiment of the present application provides a power generation system for improving solar photovoltaic efficiency, including a photovoltaic panel assembly, a liquid cooling assembly, and a support assembly;

[0007] The photovoltaic panel assembly includes a tempered glass panel and a battery panel, wherein the tempered glass panel covers the upper surface of the battery panel;

[0008] The liquid cooling assembly includes a thin aluminum plate, a back plate, a thermometer positioned on the battery plate, a pumping assembly, and a liquid cooling assembly;

[0009] The thin aluminum plate covers the lower surface of the solar panel;

[0010] The back plate is provided with a serpentine circulation groove, in which a copper core steel pipe serving as a channel is provided; the copper core steel pipe is filled with antifreeze and anticorrosion liquid;

[0011] The pumping assembly is in communication with the copper core steel pipe;

[0012] The liquid cooling component is a heat exchanger, which is connected to the pumping component; whenever the temperature of the solar panel is higher than 25°C, the pumping component is triggered to operate;

[0013] The support assembly is used to carry and support the photovoltaic panel assembly and position it on the ground.

[0014] A power generation system for improving solar photovoltaic efficiency, wherein the energy storage unit is formed by combining a super capacitor and a battery in a ratio of 1:1 to 20:1; the photovoltaic panel can also be charged when the output current is 0.01A.

[0015] A power generation system for improving solar photovoltaic efficiency, comprising a photovoltaic panel assembly and a support assembly, and also a limit assembly; the photovoltaic panel assembly is arranged in multiple rows; the support assembly comprises a back plate bracket, a mounting bracket and a mounting base; the back plate bracket is fixed on the bottom surface of the photovoltaic panel assembly; the mounting base is fixed on the ground; the mounting bracket is arranged longitudinally, the bottom is fixed on the mounting base, and the top is ball-connected to a position near the center of the bottom of the back plate bracket;

[0016] The limit assembly includes a pulling spring, a connecting rope, an insertion column, a receiving tube and a locking assembly; the bottom end of the pulling spring is fixed to the top surface of the mounting base, and the top end is fixed to a corner of the backplane bracket, and the number is two, and the two are respectively positioned at two adjacent corners of the photovoltaic panel assembly;

[0017] There are two connecting ropes, both of which are arranged longitudinally, and the tops are fixed to the other two corners of the photovoltaic panel assembly respectively; the insertion column is fixed to the bottom of the connecting rope, and a plurality of positioning grooves are provided on the side wall;

[0018] The receiving tube is a longitudinally arranged hard tube body, fixed on the mounting base, and has a through groove on the side wall; the bottom of the inserted column is always located in the receiving tube;

[0019] The locking assembly includes a Z-shaped rotating plate and a torsion spring positioned at the hinged position of the Z-shaped rotating plate; the Z-shaped rotating plate is hinged on the containing tube or the mounting base, and the top end passes through the through slot and is inserted into the positioning slot.

[0020] Preferably, it also includes a skid steer assembly

[0021] The sliding vehicle assembly is used to control the operation of the locking assembly and the movement of the insertion column to control the angle of the photovoltaic panel assembly, and includes a guide rail, a sliding platform, a telescopic force rod and a column pressing assembly;

[0022] The guide rail is fixed on the ground and arranged between two rows of photovoltaic panel assemblies, close to all the receiving tubes, and is in a snake shape as a whole, and is used to guide the movement of the sliding platform;

[0023] The sliding platform slides along the guide track;

[0024] The telescopic force-applying rod is an electric telescopic rod structure, which is longitudinally arranged and fixed at the bottom of the sliding platform. There are two of them. When the sliding platform moves to a position close to the accommodating tube, the telescopic force-applying rod is extended to contact the Z-shaped rotating plate to release the restraint on the insertion column.

[0025] The column pressing assembly is composed of multiple rods, fixed on the top surface of the sliding platform, and moved to the top of the insertion column in a timely manner to apply downward pressure to it so that the insertion column can move up and down as needed to change the angle of the photovoltaic panel assembly.

[0026] Furthermore, the column pressing assembly includes a table top guide rail, a sliding column and a sliding pressing rod;

[0027] The platform top guide rail is a guide rail arranged transversely, the length direction of which is the same as the width direction of the sliding platform and is perpendicular to the axis of the receiving tube, and is used to guide the movement of the sliding column and is fixed on the top surface of the sliding platform;

[0028] The sliding column is a hard rod body arranged longitudinally, slidably positioned on the top rail of the table, and slides along the top rail of the table under the coordinated control of the control unit and the power assembly, and moves closer to or away from the containing tube during sliding;

[0029] The sliding push rod is a hard cross bar, which is slidably positioned on the sliding column and moves along the height direction of the sliding column under the coordinated control of the control unit and the power assembly;

[0030] When in use, the control column pressing assembly is operated so that the sliding pressing rod moves to the top of the insertion column and applies downward pressure thereto.

[0031] Preferably, it also includes a liquid cooling component, which cools the solar panel by heat exchange;

[0032] It also includes a cooling bin, which is located on one side of the row of photovoltaic panel assemblies; a refrigeration system is positioned on the cooling bin;

[0033] The liquid cooling assembly includes a tube group and a pumping assembly for heat exchange arranged close to the photovoltaic panel assembly, the pumping assembly is a combination of a pump, a valve and a pipe body, and connects the tube group with the cooling chamber;

[0034] A cooling chamber corresponds to one or more rows of photovoltaic panel assemblies, providing centralized cooling for these photovoltaic panel assemblies.

[0035] Preferably, it also includes a cleaning component, a platform water storage tank, an air pump and a liquid pump positioned on the sliding platform;

[0036] The platform water storage tank is fixed on the top surface of the sliding platform, a top frame is fixed on the top, and a top winch is fixed on the top of the top frame;

[0037] The cleaning assembly comprises a support body, a rotating bearing rod, a top rotating column, a liquid infusion tube, an air infusion tube and a bearing soft rod;

[0038] The support body plays a bearing role; the rotating bearing rod is a hard cylinder as a whole, which is composed of a basic rod and a rotating rod, and the rotating rod rotates around its own axis and is connected to one end of the basic rod; the end of the basic rod away from the rotating rod is hinged on the support body;

[0039] The top rotating column is a columnar block, positioned at the top end of the rotating bearing rod;

[0040] One end of a steel wire rope is fixed to the side wall of the top rotating column, and the other end is positioned on the top winch of the frame;

[0041] The liquid delivery pipe, gas delivery pipe and supporting soft rod are all straight rods, which are fixed on the side wall of the rotating rod; the first two are hard tube bodies with one or more rows of nozzles; the latter is a rubber soft rod with cloth sheets densely covered on it.

[0042] Preferably, the long rubber bag on the bearing soft rod is connected to an air pump or a liquid pump, and expands and contracts under the control of a control unit, thereby assisting in dusting.

[0043] Preferably, one or more rows of photovoltaic panel assemblies are equipped with a water storage tank;

[0044] The water storage tank is arranged close to the guide track;

[0045] The cooling bin is located inside the water storage bin; a quick-connect connector is positioned on the side wall of the water storage bin; an insertion connecting body is provided on the side wall of the platform water storage bin;

[0046] The insertion connecting body is a combination of a transversely arranged electric telescopic rod and a connector that matches the quick-connect connector; when the platform water storage tank moves to a position close to the water storage tank, the quick-connect connector is controlled to dock with the connector of the insertion connecting body for water replenishment.

[0047] Preferably, it also includes a water injection pipe and a bottom water spray pipe;

[0048] The water injection pipe is located on the side wall of the receiving pipe near the bottom;

[0049] The bottom water spray pipe is located at the bottom of the sliding platform;

[0050] Cleaning the receiving tube and the insertion column while cleaning the photovoltaic panel assembly;

[0051] The water injection pipe is a hard pipe body arranged transversely, connected to the receiving pipe, and one end away from the receiving pipe is trumpet-shaped;

[0052] The bottom water spray pipe is connected with the liquid pump, and under the control of the control unit, a water column is sprayed into the water injection pipe in a timely manner to clean the receiving tube and the insertion column.

[0053] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0054] By installing a set of liquid cooling device behind the traditional solar panel, a thin aluminum plate is arranged behind the battery panel (silicon crystal plate), a back plate with a circulation groove is arranged on the back of the thin aluminum plate, a circulating water tank is arranged inside the back plate, and antifreeze and anticorrosion liquid is canned inside the water tank as a circulating cooling medium; and a temperature sensing device is arranged in the circulation system. Whenever the temperature of the solar panel is higher than 25 degrees Celsius, the flow of liquid in the back plate is controlled to cool the battery panel; the technical problems of low service life of photovoltaic panels in the photovoltaic power generation system in the prior art, poor stability in high temperature difference areas and relatively low photovoltaic efficiency are effectively solved; and the technical effect of high photovoltaic efficiency of solar photovoltaic power generation system is achieved, which can effectively improve the service life of photovoltaic panels, ensure the stable and continuous operation of the whole system in high temperature difference areas and high photovoltaic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A simplified structural diagram of a power generation system for improving the efficiency of solar photovoltaic power generation for this application;

[0056] Figure 2 The structure diagram of the back panel is shown in FIG.

[0057] Figure 3 This is the control schematic diagram of the power generation system;

[0058] Figure 4 It is a line graph showing the changes in output voltage, output current and output power of solar panels with different brightness on rainy days;

[0059] Figure 5 This is a line graph showing the changes in output voltage, output current, and output power of solar panels with different brightness on cloudy days;

[0060] Figure 6 A schematic diagram of the structure of a power generation system for improving the efficiency of solar photovoltaic power generation for this application;

[0061] Figure 7 It is a schematic diagram of the position relationship between the limit assembly and the skid trolley assembly;

[0062] Figure 8 It is a structural schematic diagram of the limit assembly;

[0063] Fig. 9 A schematic diagram of the positional relationship between the insertion column and the receiving tube;

[0064] Fig.10 It is a structural schematic diagram of a skid steer assembly;

[0065] Fig.11 A schematic diagram of the positional relationship between the guide rail and the solar panel;

[0066] Fig.12 A schematic diagram of the connection relationship between the back plate and the pumping assembly;

[0067] Fig.13 It is a schematic diagram of the position relationship between the water storage tank and the cooling tank;

[0068] Fig.14 is a schematic diagram of the structure of the cleaning component;

[0069] Fig.15 It is a schematic diagram of the positional relationship between the rotating bearing rod and the top rotating column, the liquid infusion tube, the gas infusion tube and the bearing soft rod;

[0070] Fig.16 It is a schematic diagram of the connection relationship between the liquid delivery pipe and the gas delivery pipe and other components;

[0071] Fig.17 Schematic diagram of the positional relationship between the bottom water spray pipe, the water injection pipe and the containing pipe.

[0072] In the figure:

[0073] Tempered glass plate 001, battery plate 002, thin aluminum plate 003, back plate 004, back plate bracket 005, mounting bracket 006, mounting base 007, thermometer 008, pumping assembly 009, pulling spring 110, connecting rope 120, inserting column 130, positioning groove 131, containing tube 140, through groove 141, Z-shaped rotating plate 142, water injection pipe 143, guide rail 210, sliding platform 220, air pump 201 , liquid pump 202, telescopic force rod 230, top guide rail 241, sliding column 242, sliding downward pressure rod 243, bottom water spray pipe 250, cooling bin 300, water storage bin 400, quick-connect connector 410, platform water storage bin 500, insertion connecting body 501, top frame 510, top winch 520, support body 610, rotating bearing rod 620, top rotating column 621, liquid infusion pipe 630, gas infusion pipe 640, bearing soft rod 650. DETAILED DESCRIPTION

[0074] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0075] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0076] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0077] Embodiment 1

[0078] like Figure 1 and Figure 2 As shown, the power generation system for improving solar photovoltaic efficiency of the present application includes a photovoltaic panel assembly, a liquid cooling assembly and a support assembly.

[0079] The photovoltaic panel assembly is in the shape of a plate as a whole, including a tempered glass plate 001 and a battery panel 002; the battery panel 002 is a rectangular solar photovoltaic panel; the tempered glass plate 001 is a rectangular glass plate, covering the upper surface of the battery panel 002 and fixed on the battery panel 002, for reducing the wear and corrosion of the battery panel 002, thereby extending the service life of the battery panel 002.

[0080] The liquid cooling assembly is used to timely reduce the temperature of the battery panel 002 by liquid cooling, and includes a thin aluminum plate 003, a back plate 004, a thermometer 008, a pumping assembly 009 and a liquid cooling assembly; the thin aluminum plate 003 is made of aluminum, covers the lower surface of the battery panel 002, and is a rectangular plate body, which plays a role in heat conduction; the back plate 004 is a metal plate, an organic plate or an inorganic plate, and is a rectangular plate body, which is fixed on the lower surface of the thin aluminum plate 003; a serpentine circulation groove is provided on the back plate 004, and a copper core steel serving as a channel is provided in the circulation groove tube; the copper core steel tube is filled with antifreeze and anticorrosion liquid; the thermometer 008 is positioned on the battery panel 002, and is used to measure the temperature of the battery panel 002; the pumping component 009 is a combination of a pump, a valve and a pipeline, which is connected to the copper core steel tube, and is used to make the liquid in the copper core steel tube flow by pumping; the liquid cooling component is a heat exchanger, which is connected to the pumping component 009, and is used to accelerate the cooling of the antifreeze and anticorrosion liquid; whenever the temperature of the battery panel 002 is higher than 25°C, the pumping component 009 is triggered to run, taking away the heat to perform liquid cooling on the battery panel 002.

[0081] The support assembly is used to carry and support the photovoltaic panel assembly and position it on the ground, including a backplane bracket 005, a mounting bracket 006 and a mounting base 007; the backplane bracket 005 is a rectangular plate body or a rectangular frame, fixed on the bottom surface of the backplane 004 and arranged close to the backplane 004; the mounting base 007 is a plate-shaped or block-shaped, fixed on the ground; the mounting bracket 006 is a plate-shaped, rod-shaped or frame structure, fixed on the top surface of the mounting base 007; the backplane bracket 005 is located directly above the mounting bracket 006 and is positioned on the mounting bracket 006.

[0082] Furthermore, the freezing point of the antifreeze and antiseptic liquid is minus 50°C.

[0083] The following table (Table 1) reflects the effect of the temperature of the solar panel 002 on the power generation:

[0084] Table 1-Summary of test data on the impact of different battery panel (panel) temperatures on power generation

[0085]

[0086]

[0087] The test shows that under good light conditions, the surface temperature of panel 002 is 25 degrees Celsius, which is a critical value. When the surface temperature of panel 002 is higher than 25 degrees Celsius, the output power will decrease as the temperature rises. When the surface temperature of panel 002 is lower than 25 degrees Celsius, the output power will increase as the temperature drops.

[0088] The following tables (Table 2 and Table 3) reflect the impact of using liquid cooling components and not using liquid cooling components on power generation under clear and hot weather:

[0089] Table 2 - Solar panel temperature and power change data when using liquid cooling components

[0090] Plate surface temperature (℃) Voltage (V) Current (A) Power(W) 15.6 19.8 1 19.8 20.8 19.9 1 19.9 25 20.9 1.25 26.125 26.2 20.9 1.26 26.334 25.5 20.8 1.25 26 24.8 20.7 1.23 25.461 25.8 20.7 1.24 25.668 26.7 20.6 1.22 25.132 26.1 20.7 1.21 25.047 25.3 20.7 1.24 25.668 24.6 20.8 1.26 26.208 25.9 20.5 1.27 26.035 24.6 20.6 1.24 25.544 25.9 20.4 1.26 25.704 26.4 20.9 0.99 20.691 27.1 20.2 1.19 24.038 25.6 20.8 1.23 25.584 28.2 20.5 1.18 24.19 26.2 20.3 1.22 24.766 25.8 20.8 1.23 25.584

[0091] Table 3 - Solar panel temperature and power change data when liquid cooling components are not used

[0092]

[0093]

[0094] From the comparison of the above two tables (Table 2 and Table 3), it can be seen that the power generation efficiency of the power generation system using the liquid cooling component is improved by 23.6%.

[0095] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0096] The invention solves the technical problems in the prior art of photovoltaic power generation system, such as short service life of photovoltaic panels, poor stability in high temperature difference areas and relatively low photovoltaic efficiency; the invention realizes the technical effect that the solar photovoltaic efficient power generation system can effectively increase the service life of photovoltaic panels, can ensure the stable and continuous operation of the whole system in high temperature difference areas and has high photovoltaic efficiency.

[0097] Embodiment 2

[0098] In practical applications, in addition to high temperature, factors affecting the efficiency of solar photovoltaic power generation are also crucial, such as the materials and environment of the battery as an energy storage. The battery is limited in number of cycles, short service life, low efficiency at low temperature, and high replacement cost, which limits its promotion and application. Photovoltaic power generation is greatly affected by the weather environment. It is often due to extremely low power generation efficiency or even no power generation in rainy weather (see test data). The intermittent and random nature of photovoltaic power generation may cause short-term or long-term changes in grid voltage, affecting the load curve and bringing a huge impact on the stability of the grid. Among them, the most influential factor in practical applications is that the power generation current of photovoltaic panels on rainy days is less than 1.0A, resulting in the inability to generate power and transmit on rainy days, which results in a waste of efficiency of photovoltaic panels. At the same time, because the weak current of actual power generation cannot be transmitted, it will accelerate the performance decline of photovoltaic panels and reduce the service life of photovoltaics. The embodiment of the present application adopts supercapacitor energy storage, which can ensure normal power generation and power supply in rainy weather, and can effectively reduce the configuration area of ​​photovoltaic panels, because photovoltaics can generate and transmit electricity even on rainy and cloudy days. The supercapacitor will not affect the efficiency of capacity due to ambient temperature, and it can work normally even under -80℃ conditions.

[0099] like Figures 3 to 5 As shown, the supercapacitor and battery (storage battery) of the power generation system of the present application are used in a ratio (1:1 to 20:1) and can be charged even when the output current is 0.01A.

[0100] The data in the following tables (Table 4 to Table 8) reflect the charging conditions when the supercapacitors and batteries used in the power generation system of the present application are used in combination with different ratios;

[0101] Table 4 - Charging feedback table when the ratio of supercapacitor to battery is 1:1

[0102]

[0103]

[0104] Table 5 - Charging feedback table when the ratio of supercapacitor to battery is 12:1

[0105] time Voltage Current Charging power Remark 16:00 23.5 0.53 yes 12.45 Heavy clouds 16:30 23.6 0.34 yes 8.02 Heavy rain 17:00 23.5 0.36 yes 8.46 light rain 17:30 23.9 0.46 yes 10.99 Rain Stops 18:00 23.8 0.57 yes 11.42 With light 18:30 23.8 0.48 yes 11.42 With light 19:00 23.5 0.36 yes 8.46 Low light 19:30 23.1 0.22 yes 5.08 Sun sets 20:00 22.8 0.02 no 0.45 Dark 5:00 22.9 0.02 no 0.45 Daybreak 5:18 22.9 0.05 yes 1.14 Low light 5:30 22.9 0.09 yes 2.06 6:00 22.9 0.15 yes 3.43 6:30 23.1 0.18 yes 4.15 7:00 23.3 0.25 yes 5.82 7:30 23.3 0.23 yes 5.35 8:00 23.4 0.25 yes 5.85

[0106] Table 6 - Charging feedback table when the ratio of supercapacitor to battery is 13:1

[0107]

[0108]

[0109] Table 7 - Charging feedback table when the ratio of supercapacitor to battery is 2:1

[0110] time Voltage Current Charging power Remark 17:00 24.2 0.65 yes 15.99 17:30 23.9 0.53 yes 12.66 18:00 23.8 0.41 yes 9.75 18:17 23.7 0.36 yes 8.53 18:30 23.6 0.32 no 7.55 19:00 23.4 0.13 no 3.04 19:30 23.2 0.03 no 0.69 Sun sets 5:00 22.8 0.02 no 0.45 Daybreak 5:30 23.1 0.09 no 2.07 6:00 23.1 0.15 no 3.46 6:30 23.2 0.19 no 4.38 7:00 23.3 0.26 no 6.05 7:30 23.3 0.32 no 7.45 8:00 23.5 0.33 no 7.28 8:05 23.6 0.34 no 7.99

[0111] Table 8 - Charging feedback table when the ratio of supercapacitor to battery is 4:1

[0112] time Voltage (V) Current (A) Charging power Remark 17:00 24.3 0.66 yes 16.03 17:30 24.0 0.54 yes 12.96 18:00 23.9 0.43 yes 10.27 18:20 23.7 0.36 yes 8.53 18:30 23.6 0.32 yes 7.55 19:00 23.4 0.14 no 3.27 19:30 23.2 0.03 no 0.69 Sun sets 19:40 22.8 0.01 no 0.22 Dark 5:00 22.8 0.02 no 0.45 Daybreak 5:30 23.1 0.09 no 2.07 6:00 23.1 0.15 no 3.46 6:30 23.2 0.20 no 4.64 7:00 23.3 0.26 no 6.05 7:30 23.3 0.32 yes 7.45 8:00 23.7 0.34 yes 8.05 8:05 23.9 0.36 yes 8.60

[0113] The following tables (Table 9 to Table 10) are Figure 4 and Figure 5 Corresponding data table

[0114] Table 9-Summary of output voltage, output current and output power of solar panels with different brightness on rainy days

[0115]

[0116]

[0117] Table 10-Summary of output voltage, output current and output power of solar panels at different brightness on cloudy days

[0118] Brightness (lx) Voltage (V) Current (A) Power(W) 53038 20.9 0.46 9.614 51243 20.7 0.46 9.522 47669 20.6 0.42 8.652 35663 20.4 0.32 6.528 31426 20.3 0.27 5.481 26836 20.1 0.22 4.422 24920 20 0.2 4 23017 19.9 0.19 3.781 19121 19.6 0.15 2.94 14333 19.4 0.13 2.522 10508 19 0.08 1.52 9302 18.7 0.09 1.683 8829 18.7 0.08 1.496 7933 18.6 0.06 1.116 6658 18.3 0.05 0.915 5523 18.2 0.05 0.91

[0119] Supercapacitors store electricity quickly and have the ability to accept weak currents while achieving the output effect of batteries. Solar photovoltaic panels generate electricity regardless of whether it is rainy, cloudy or sunny, but the current is different. Ordinary lithium batteries cannot store the electricity generated by solar photovoltaic panels on rainy or cloudy days, which wastes the electricity generated on rainy or cloudy days and cannot provide power to the load. However, supercapacitors perfectly break this drawback. They can store weak electricity and then slowly gather the collected weak electricity into a large current and store it in lithium batteries. They solve the problem of energy storage on rainy days, turn weak current and low voltage into normal current and voltage, and improve the effective power generation efficiency by more than 30%.

[0120] Furthermore, the commercially available product of the supercapacitor is 2.7V3000F (manufacturer: Shenzhen Mingxi Technology Co., Ltd.).

[0121] Embodiment 3

[0122] In order to further improve the photovoltaic efficiency, reduce the overall construction cost under the premise of ensuring low failure rate, and realize the follow-up (follow the sun) function at low cost, such as Figures 6 to 11 As shown, an embodiment of the present application provides a power generation system for improving solar photovoltaic efficiency, including a photovoltaic panel assembly, a support assembly, a limit assembly and a sliding vehicle assembly.

[0123] The main body of the photovoltaic panel assembly is a hard rectangular plate body, which is arranged in multiple rows and uses solar energy to generate electricity.

[0124] The support assembly is used to support the photovoltaic panel assembly and position it on the ground, including a backplane support 005, a mounting support 006 and a mounting base 007;

[0125] The backplane bracket 005 is a rectangular plate body or a rectangular frame, which is fixed on the bottom surface of the photovoltaic panel assembly and is arranged close to the photovoltaic panel assembly; the mounting base 007 is plate-shaped or block-shaped, fixed on the ground; the mounting bracket 006 is a rod body or a rod-shaped frame structure, which is arranged longitudinally, with the bottom fixed on the mounting base 007 and the top ball-jointed to the bottom of the backplane bracket 005 near the center.

[0126] Preferably, Fig.12 As shown, the power generation system for improving the efficiency of solar photovoltaic also includes a liquid cooling component, which cools the battery panel 002 by heat exchange.

[0127] The limiting assembly is used to limit the position of the photovoltaic panel assembly and thus position it, and includes a pulling spring 110, a connecting rope 120, an insertion column 130, a receiving tube 140 and a locking assembly;

[0128] The pulling spring 110 is a longitudinally arranged spring, the bottom end of which is fixed on the top surface of the mounting base 007, and the top end is fixed on a corner of the backplane bracket 005; the number of the pulling spring 110 is two, and the two are respectively positioned on two adjacent corners of the photovoltaic panel assembly;

[0129] The connecting ropes 120 are two steel wire ropes, both are longitudinally arranged, with a length greater than 30 cm and less than 80 cm, and the tops are respectively fixed to the other two corners of the photovoltaic panel assembly;

[0130] The insertion column 130 is a hard cylinder, fixed to the bottom of the connecting rope 120, arranged longitudinally, and has a plurality of positioning grooves 131 on the side wall. The positioning grooves 131 are annular grooves, the number of which is 10 or more, and the spacing between each other is less than 3 cm;

[0131] The receiving tube 140 is a hard tube body arranged longitudinally, and the bottom is fixed on the top surface of the mounting base 007 and is located directly below the insertion column 130; the insertion column 130 is always located in the receiving tube 140 near the bottom; a through groove 141 is provided on the side wall of the receiving tube 140 near the top, and the through groove 141 is a through groove, which is used to cooperate with the locking assembly to fix the insertion column 130 and thus limit the position of the photovoltaic panel assembly;

[0132] The locking assembly is used to fix the insertion column 130 on the accommodating tube 140 to limit the relative movement of the two, and includes a Z-shaped rotating plate 142 and a torsion spring positioned on the Z-shaped rotating plate 142; the Z-shaped rotating plate 142 is a hard plate body with a Z-shaped main body, and its bending part near the bottom is hinged on the side wall near the bottom of the accommodating tube 140 or on the mounting base 007, and the axial direction of the hinge axis is parallel to the horizontal ground. The torsion spring is positioned at the hinge position of the Z-shaped rotating plate 142, which is used to accumulate and release elastic potential energy to ensure that the top end of the Z-shaped rotating plate 142 is inserted into the through groove 141 and the positioning groove 131 under normal conditions to fix the insertion column 130.

[0133] The sliding vehicle assembly is used to control the operation of the locking assembly and the movement of the insertion column 130 to control the angle of the photovoltaic panel assembly, and includes a guide rail 210, a sliding platform 220, a telescopic force rod 230 and a column pressing assembly;

[0134] The guide rail 210 is fixed on the ground and arranged between two rows of photovoltaic panel assemblies, close to all the receiving tubes 140, and is in a snake shape as a whole, and is used to guide the movement of the sliding platform 220 so that the sliding platform 220 can move to the rear of any one of a group (multiple rows) of photovoltaic panel assemblies and apply force to them;

[0135] The sliding platform 220 has a built-in motor and is a rectangular platform that slides along the guide rail 210 to play a bearing role;

[0136] The telescopic force-applying rod 230 is an electric telescopic rod structure, which is longitudinally arranged and fixed at the bottom of the sliding platform 220. There are two of them. When the sliding platform 220 moves to a position close to the accommodating tube 140, the telescopic force-applying rod 230 extends to contact the Z-shaped rotating plate 142 to release the restraint on the insertion column 130.

[0137] The column pressing assembly is composed of a plurality of rods, fixed on the top surface of the sliding platform 220, and moved to the top of the insertion column 130 in a timely manner, exerting downward pressure thereon so that the insertion column 130 can move up and down as needed to change the angle of the photovoltaic panel assembly;

[0138] The column pressing assembly includes a top rail 241, a sliding column 242 and a sliding pressing rod 243; the top rail 241 is a transversely arranged rail, the length direction of which is the same as the width direction of the sliding platform 220 and is perpendicular to the axis of the containing tube 140, and is used to guide the movement of the sliding column 242, and is fixed on the top surface of the sliding platform 220; the sliding column 242 is a longitudinally arranged hard rod body, which is slidably positioned on the top rail 241, and slides along the top rail 241 under the coordinated control of the control unit and the power assembly (the control unit and the power assembly are prior art, preferably a combination of a programmable logic controller, a motor and a battery), and moves closer to or away from the containing tube 140 when sliding;

[0139] The sliding pressure rod 243 is a hard cross bar, which is slidably positioned on the sliding column 242 and moves along the height direction of the sliding column 242 under the coordinated control of the control unit and the power component; when in use, the control column pressing component is operated to make the sliding pressure rod 243 move to the top of the insertion column 130, applying downward pressure thereto.

[0140] When the power generation system for improving the efficiency of solar photovoltaic power generation according to the embodiment of the present application is used, the column pressing assembly is used in conjunction with the locking assembly at a low cost to control the angle of the photovoltaic panel assembly so as to obtain better power generation efficiency; specifically, as the sun shifts, the sliding platform 220 moves along the guide rail 210 driven by the power assembly, and during the movement, the angle of the entire photovoltaic panel assembly is controlled by controlling the height (and height difference) of the insertion column 130 fixed on the same photovoltaic panel assembly.

[0141] Embodiment 4

[0142] In order to further reduce the overall cost, the embodiment of the present application uses a centralized warehouse to contain the refrigerant used by the liquid cooling component, thereby centrally cooling the refrigerant, reducing the number of pump groups used and saving energy, specifically:

[0143] like Fig.11 and Fig.12 As shown, the power generation system for improving the efficiency of solar photovoltaic in the embodiment of the present application further includes a cooling chamber 300, which is located on one side of the row of photovoltaic panel assemblies; a refrigeration system is positioned on the cooling chamber 300, and the refrigeration system is preferably a combination of multiple semiconductor refrigeration sheets;

[0144] The liquid cooling assembly includes a tube group and a pumping assembly 009 for heat exchange arranged close to the photovoltaic panel assembly. The pumping assembly 009 is a combination of a pump, a valve and a pipe body, which connects the tube group with the cooling chamber 300;

[0145] One cooling chamber 300 corresponds to one or more rows of photovoltaic panel assemblies, and performs centralized cooling for these photovoltaic panel assemblies.

[0146] Preferably, the pipe of the pumping component 009 is sleeved with an insulation pipe.

[0147] Embodiment 5

[0148] In order to further improve the practicality of the present application, the present application adds a cleaning component, a platform water storage tank 500, an air pump 201 and a liquid pump 202 on the basis of the third embodiment, and cooperates with the structure of the system in the third embodiment to clean the photovoltaic panel assembly efficiently, conveniently and with little damage; specifically:

[0149] like Figures 14 to 16 As shown, the air pump 201 and the liquid pump 202 are both positioned on the sliding platform 220 to supply air and liquid to the cleaning component;

[0150] The platform water storage tank 500 is fixed on the top surface of the sliding platform 220, acts as a container, and is connected to the liquid pump 202; a rod-shaped and longitudinally arranged top frame 510 is fixed on the top of the platform water storage tank 500, and a top winch 520 is fixed on the top of the top frame 510; the top winch 520 is a winch structure, and operates under the coordinated control of the power component of the control unit;

[0151] The cleaning assembly includes a support body 610, a rotating bearing rod 620, a top rotating column 621, an infusion tube 630, an air supply tube 640 and a bearing soft rod 650; the support body 610 is fixed on the top surface of the sliding platform 220, is located on one side of the platform water storage tank 500 and is far away from the column pressing assembly, is in the shape of a plate or a block, and plays a bearing role; the rotating bearing rod 620 is a hard cylinder as a whole, which is spliced ​​and combined by a basic rod and a rotating rod, and the rotating rod rotates around its own axis and is connected to one end of the basic rod, and rotates around its own axis under the coordinated control of the control unit and the power assembly; the rotating rod plays a bearing role, and its length is more than 5 times the length of the basic rod; the end of the basic rod away from the rotating rod is hinged on the support body 610, and the axial direction of the hinge axis is parallel to the ground; the The top rotating column 621 is a cylindrical block, which rotates around its own axis and is connected to the end of the rotating rod away from the base rod; one end of a steel wire rope is fixed to the side wall of the top rotating column 621, and the other end is positioned on the top winch 520, cooperating with the top winch 520 to achieve the amplitude change of the rotating load-bearing rod 620; the liquid infusion pipe 630, the gas pipe 640 and the bearing soft rod 650 are all straight rods, and the three have the same axial direction and the same axial direction as the rotating load-bearing rod 620, and all three are fixed on the side wall of the rotating rod; the first two are hard tube bodies, and the latter is a rubber soft rod; the liquid infusion pipe 630 is connected to the liquid pump 202, and one or more rows of water discharge nozzles are provided on it; the gas pipe 640 is connected to the air pump 201, and one or more rows of gas nozzles are provided on it; the bearing soft rod 650 is densely covered with cloth pieces, which plays the role of dusting;

[0152] When in use, first control the sliding platform 220 to move along the guide rail 210, unlock all locking components one by one, so that the angles and orientations of all photovoltaic panel components remain consistent; then control the sliding platform 220 to move, adjust the angle of the rotating bearing rod 620, and clean the photovoltaic panel components by jetting, spraying water and / or dusting to maintain its power generation efficiency.

[0153] In order to speed up the release of all locks, a horizontally arranged cylindrical wheel is provided at the bottom end of the telescopic force-applying rod 230 , and the cylindrical wheel applies pressure to the Z-shaped rotating plate 142 when the sliding platform 220 slides.

[0154] Preferably, the long rubber bag on the bearing soft rod 650 is connected to the air pump 201 or the liquid pump 202, and expands and contracts under the control of the control unit, thereby assisting the dusting process.

[0155] In order to efficiently complete the water replenishment of the platform water storage tank 500, reduce the transportation cost of clean water and assist in liquid cooling, one row or more rows of photovoltaic panel components are equipped with a water storage tank 400; the water storage tank 400 is set close to the guide track 210; Fig.13 As shown, the cooling bin 300 is located inside the water storage bin 400; a quick-connect connector 410 is positioned on the side wall of the water storage bin 400; an insertion connecting body 501 is provided on the side wall of the platform water storage bin 500; the insertion connecting body 501 is a combination of a laterally arranged electric telescopic rod and a connector that matches the quick-connect connector 410; when the platform water storage bin 500 moves to a position close to the water storage bin 400, the quick-connect connector 410 is controlled to dock with the connector of the insertion connecting body 501 for water replenishment.

[0156] Embodiment 6

[0157] In order to further improve the practicality of the present application, avoid the accumulation of debris in the receiving tube 140 and thus corrode and damage the receiving tube 140, and reduce maintenance costs, the present embodiment of the present application adds a water injection pipe 143 on the side wall of the receiving tube 140 near the bottom, and adds a bottom water spray pipe 250 at the bottom of the sliding platform 220 on the basis of the above embodiment; while cleaning the photovoltaic panel assembly, the receiving tube 140 and the insertion column 130 are cleaned, and the debris in the groove on the insertion column 130 is cleaned, so as to ensure that the Z-shaped rotating plate 142 can be clamped, thereby improving the stability of the operation of the entire system; specifically:

[0158] like Fig.17 As shown, the water injection pipe 143 is a transversely arranged hard tube body, which is connected to the containing tube 140, and the end away from the containing tube 140 is trumpet-shaped; the bottom water spray pipe 250 is connected to the liquid pump 202, and under the control of the control unit, water columns are sprayed into the water injection pipe 143 in a timely manner to clean the containing tube 140 and the insertion column 130.

[0159] Preferably, when washing the receiving tube 140 with water, the column pressing assembly can be used to move the insertion column 130 up and down to improve the cleaning effect.

[0160] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power generation system for improving solar photovoltaic efficiency, comprising a photovoltaic panel assembly and a support assembly, characterized in that: It also includes a limit assembly; the photovoltaic panel assemblies are arranged in multiple rows; the support assembly includes a back panel bracket (005), a mounting bracket (006) and a mounting base (007); the back panel bracket (005) is fixed on the bottom surface of the photovoltaic panel assembly; the mounting base (007) is fixed on the ground; the mounting bracket (006) is arranged longitudinally, the bottom is fixed on the mounting base (007), and the top is ball-connected to the bottom of the back panel bracket (005) near the center; The limit assembly comprises a pulling spring (110), a connecting rope (120), an insertion column (130), a receiving tube (140) and a locking assembly; the bottom end of the pulling spring (110) is fixed on the top surface of the mounting base (007), and the top end is fixed on a corner of the back plate bracket (005), and there are two of them, which are respectively positioned on two adjacent corners of the photovoltaic panel assembly; There are two connecting ropes (120), both are arranged longitudinally, and the tops are respectively fixed to the other two corners of the photovoltaic panel assembly; the insertion column (130) is fixed to the bottom of the connecting rope (120), and a plurality of positioning grooves (131) are provided on the side wall; The accommodating tube (140) is a longitudinally arranged hard tube body, fixed on the mounting base (007), and a through groove (141) is provided on the side wall; the bottom of the insertion column (130) is always located in the accommodating tube (140); The locking assembly comprises a Z-shaped rotating plate (142) and a torsion spring positioned at a hinged position of the Z-shaped rotating plate (142); the Z-shaped rotating plate (142) is hinged on the containing tube (140) or the mounting base (007), and the top end thereof penetrates through the through slot (141) and is inserted into the positioning slot (131); Also includes skid steer assembly, The sliding vehicle assembly is used to control the operation of the locking assembly and the movement of the insertion column (130) to control the angle of the photovoltaic panel assembly, and comprises a guide rail (210), a sliding platform (220), a telescopic force rod (230) and a column pressing assembly; The guide rail (210) is fixed on the ground and arranged between two rows of photovoltaic panel assemblies, and is arranged close to all the receiving tubes (140). The guide rail (210) is serpentine in shape and is used to guide the movement of the sliding platform (220); The sliding platform (220) slides along the guide track (210); The telescopic force-applying rod (230) is an electric telescopic rod structure, which is longitudinally arranged and fixed at the bottom of the sliding platform (220). There are two of them. When the sliding platform (220) moves to a position close to the accommodating tube (140), the telescopic force-applying rod (230) is extended to contact the Z-shaped rotating plate (142) to release the restraint on the insertion column (130). The column pressing assembly is formed by splicing a plurality of rods, fixed on the top surface of the sliding platform (220), and moved to the top of the insertion column (130) in due time, exerting downward pressure thereon so that the insertion column (130) can move up and down as required, thereby changing the angle of the photovoltaic panel assembly; The column pressing assembly comprises a table top guide rail (241), a sliding column (242) and a sliding pressing rod (243); The platform top guide rail (241) is a guide rail arranged transversely, the length direction of which is the same as the width direction of the sliding platform (220) and is perpendicular to the axis of the accommodating tube (140), and is used to guide the movement of the sliding column (242) and is fixed on the top surface of the sliding platform (220); The sliding column (242) is a longitudinally arranged hard rod body, which is slidably positioned on the top rail (241) and slides along the top rail (241) under the coordinated control of the control unit and the power assembly, and moves closer to or away from the containing tube (140) during sliding. The sliding push rod (243) is a hard cross bar, which is slidably positioned on the sliding column (242) and moves along the height direction of the sliding column (242) under the coordinated control of the control unit and the power assembly; When in use, the control column pressing assembly operates so that the sliding pressing rod (243) moves to the top of the insertion column (130) to apply downward pressure thereto; Also included is a liquid cooling component, which cools down the battery panel (002) by heat exchange; It also includes a cooling bin (300), the cooling bin (300) is located on one side of the row of photovoltaic panel assemblies; a refrigeration system is positioned on the cooling bin (300); The liquid cooling assembly comprises a tube group and a pumping assembly (009) for heat exchange arranged close to the photovoltaic panel assembly, wherein the pumping assembly (009) is a combination of a pump, a valve and a pipe body, and connects the tube group with the cooling chamber (300); A cooling chamber (300) corresponds to one or more rows of photovoltaic panel assemblies, and performs centralized cooling for these photovoltaic panel assemblies.

2. The power generation system for improving solar photovoltaic efficiency as claimed in claim 1, characterized in that: It also includes a cleaning component, a platform water storage tank (500), an air pump (201) and a liquid pump (202) positioned on the sliding platform (220); The platform water storage tank (500) is fixed on the top surface of the sliding platform (220), a top frame (510) is fixed on the top, and a top winch (520) is fixed on the top of the top frame (510); The cleaning assembly comprises a support body (610), a rotating bearing rod (620), a top rotating column (621), a liquid infusion tube (630), an air infusion tube (640) and a bearing soft rod (650); The support body (610) plays a bearing role; the rotating bearing rod (620) is a hard cylinder as a whole, and is composed of a basic rod and a rotating rod spliced ​​together, and the rotating rod is connected to one end of the basic rod by rotating around its own axis; the end of the basic rod away from the rotating rod is hinged on the support body (610); The top rotating column (621) is a columnar block, positioned at the top end of the rotating bearing rod (620); One end of a steel wire rope is fixed to the side wall of the top rotating column (621), and the other end is positioned on the top winch (520); The liquid delivery tube (630), gas delivery tube (640) and bearing soft rod (650) are all straight rods, all fixed on the side wall of the rotating rod; the first two are hard tube bodies with one or more rows of nozzles arranged thereon; the latter is a rubber soft rod with cloth sheets densely covered thereon.

3. The power generation system for improving solar photovoltaic efficiency as claimed in claim 2, characterized in that: The long rubber bag on the bearing soft rod (650) is connected to the air pump (201) or the liquid pump (202), and expands and contracts under the control of the control unit, thereby assisting the dusting process.

4. The power generation system for improving solar photovoltaic efficiency as claimed in claim 1, characterized in that: One or more rows of photovoltaic panel assemblies are equipped with a water storage tank (400); The water storage tank (400) is arranged close to the guide track (210); The cooling bin (300) is located inside the water storage bin (400); a quick-connect connector (410) is positioned on the side wall of the water storage bin (400); an insertion connecting body (501) is provided on the side wall of the platform water storage bin (500); The insertion connecting body (501) is a combination of a laterally arranged electric telescopic rod and a connector that matches the quick-connect connector (410); when the platform water storage tank (500) moves to a position close to the water storage tank (400), the quick-connect connector (410) is controlled to dock with the connector of the insertion connecting body (501) to replenish water.

5. The power generation system for improving solar photovoltaic efficiency as claimed in claim 2, characterized in that: It also includes a water injection pipe (143) and a bottom water spray pipe (250); The water injection pipe (143) is located on the side wall of the receiving pipe (140) near the bottom; The bottom water spray pipe (250) is located at the bottom of the sliding platform (220); Cleaning the receiving tube (140) and the insertion column (130) while cleaning the photovoltaic panel assembly; The water injection pipe (143) is a hard pipe body arranged transversely, connected to the receiving pipe (140), and one end away from the receiving pipe (140) is trumpet-shaped; The bottom water spray pipe (250) is connected to the liquid pump (202) and sprays water into the water injection pipe (143) in a timely manner under the control of the control unit to clean the receiving tube (140) and the insertion column (130).

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