Photovoltaic module capable of efficiently following light

Abstract

The invention discloses a photovoltaic module capable of efficiently following light, which comprises a mounting frame and a solar cell panel body mounted at the mounting frame, and a plurality of light intensity sensors are mounted at the mounting frame. According to the photovoltaic module, the surface of the solar cell panel can be effectively cleaned, so that the power generation efficiency is improved. Each movable seat is provided with two light intensity sensors, and the average value is obtained according to the measured values of the two light intensity sensors, so that the measurement is more accurate. And whether abnormity occurs or not can be judged according to the difference between the measured values of the two light intensity sensors. And inaccurate detection caused by shielding of the light intensity sensor can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic modules, and more particularly to a photovoltaic module capable of efficient light tracking. BACKGROUND

[0002] A photovoltaic module is the core power generation component of a solar power generation system, and its function is to directly convert solar energy into electrical energy. With the progress of photovoltaic technology, photovoltaic modules are widely used in large ground power stations, distributed roof projects, and various portable power generation equipment.

[0003] In order to improve the power generation efficiency, the existing photovoltaic module needs to increase the light tracking effect. Some of the existing light tracking effects are achieved by installing multiple light intensity sensors at different positions, so as to adjust the angle of the photovoltaic panel according to the light intensity value measured by the light intensity sensor, so that it is perpendicular to the sunlight incidence direction as much as possible, thereby realizing efficient light tracking. However, the light intensity sensor is usually exposed to the external environment and lacks effective protection measures, and is easily blocked by foreign matter such as leaves, dust, bird droppings, etc. Once blocked, the light intensity data detected by the light intensity sensor will be distorted, which will cause the angle adjustment to deviate, and the light tracking effect will also be reduced. Moreover, the surface of the solar panel is also easily blocked by foreign matter, which will hinder the absorption of sunlight, weaken the light intensity received by the panel, and directly lead to a reduction in power generation efficiency. SUMMARY

[0004] The present application aims to overcome the defects of the prior art and provide a photovoltaic module capable of efficient light tracking.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solution: a photovoltaic module comprising a mounting frame and a solar cell panel body mounted on the mounting frame, wherein the mounting frame is provided with a plurality of light intensity sensors.

[0006] Further, the installation frame is rectangular frame-shaped, the installation frame comprises two strip-shaped installation grooves, detection units are installed in the strip-shaped installation grooves, top cover plates that close top end portions of the strip-shaped installation grooves are fixed to top portions of the strip-shaped installation grooves, two ends of the strip-shaped installation grooves are not blocked by the top cover plates, and two top openings are formed between the two ends of the strip-shaped installation grooves and two ends of the top cover plates; the two ends of the strip-shaped installation grooves are both communicated with end portion accommodating grooves in the installation frame, and the closed ends of the end portion accommodating grooves are connected with movable stop blocks through first springs; the detection unit comprises a mounting frame, a slider chamber portion, a pipe, two translation movable units, and two end portion closing units, the slider chamber portion has an inner chamber and four slider channels that are communicated with the inner chamber, the translation movable unit comprises a movable seat, the light intensity sensor that is mounted on the movable seat, a push rod, a push plate, and two slider rods, the end portions of the slider rods are connected with sliders in the slider channels, the mounting frame comprises two strip-shaped side plates and a connecting plate, and the end portion closing unit comprises a closing plate and a plurality of insertion rods that are fixedly connected with the closing plate, the two ends of the strip-shaped side plates are both provided with insertion channels, and the second springs are connected between the closed ends of the insertion channels and the insertion rods; the installation frame is provided with an internal channel, the strip-shaped installation grooves are provided with communication holes that are inserted by the pipe and communicated with the internal channel, and the installation frame is fixedly provided with an air outlet bin and a plurality of fan units, the internal space of the air outlet bin is communicated with the internal channel, the fan units can blow air to the internal space of the air outlet bin, and the air outlet bin is provided with a plurality of air outlet holes.

[0007] Further, the lengths of the strip-shaped side plates are equal to the length of the top cover plate.

[0008] Further, the mounting frame is fixed in the strip-shaped installation groove.

[0009] Further, the mounting frame is fixed in the strip-shaped installation groove through adhesive glue.

[0010] Further, the slider chamber portion is fixed to the mounting frame.

[0011] Further, the pipe is fixedly connected with the slider chamber portion.

[0012] Further, the push rod is fixedly connected with the movable seat.

[0013] Further, the push plate is fixedly connected with the push rod.

[0014] Further, the slider rod is fixedly connected with the push plate.

[0015] Further, the slider is cylindrical, and the slider channel is cylindrical.

[0016] Further, the connecting plate connects the two strip-shaped side plates.

[0017] Furthermore, each end of the inner chamber is connected to two slider channels.

[0018] Furthermore, the internal channel includes two strip channels and a connecting channel connecting the two strip channels. The two strip channels are respectively located below the two strip mounting slots, and the connecting channel is located below the air outlet chamber. The fan unit is installed below the mounting frame and the fan unit can blow air into the connecting channel.

[0019] Furthermore, the fan unit has multiple units, which are arranged in a row with equal spacing; two light intensity sensors are installed at each movable seat.

[0020] Furthermore, the air outlet chamber includes a main chamber and two auxiliary chambers connected to the main chamber. The main chamber has a first recessed portion, and the auxiliary chambers have second recessed portions. The multiple air outlets are divided into multiple first air outlets and multiple second air outlets. The first recessed portion has multiple first air outlets, and each second recessed portion has multiple second air outlets. The air outlets of the two auxiliary chambers are used to blow air into the space above the two strip-shaped mounting slots.

[0021] Thus, the main compartment can be used to blow clean the surface of the solar panels, and the secondary compartment can be used to blow clean the top cover and the two top openings.

[0022] Furthermore, each end of the strip-shaped side plate has two insertion channels, one end of which is closed.

[0023] Furthermore, each enclosure plate is fixedly connected with four insert rods.

[0024] Furthermore, each movable stop is connected to two first springs.

[0025] Furthermore, multiple connecting plates are connected between the two strip-shaped side plates of the mounting bracket, and the multiple connecting plates are divided into two upper connecting plates and two lower connecting plates.

[0026] Furthermore, the push rod is located between the upper connecting plate and the lower connecting plate.

[0027] Furthermore, the strip mounting groove is cuboid in shape, the top cover is rectangular, and the top opening is rectangular.

[0028] Furthermore, the mounting frame has multiple mounting holes on both sides.

[0029] Furthermore, the sealing plate includes a first plate body fixedly connected to the insertion rod and a second plate body perpendicular to and fixedly connected to the first plate body.

[0030] Furthermore, the photovoltaic module can be in a first state and a second state. In the first state, all fan units are in the off state, the first plate abuts against the end of the corresponding strip side plate, the movable block abuts against the corresponding first plate and blocks the corresponding top opening, and the second plate is located above the corresponding top cover plate. In the second state, all fan units are in the on state, the first plate abuts against the end of the corresponding strip mounting groove, the movable seat abuts against the corresponding first plate, the movable block abuts against the corresponding first plate, and the light intensity sensor is located at the top opening.

[0031] Furthermore, the height of the movable seat is higher than that of the movable stop, so that the movable stop can be moved into the strip mounting groove (located below the top opening to prevent foreign objects from entering the strip mounting groove from the top opening), but the movable seat cannot be moved into the receiving groove. After the movable seat moves a certain distance against the first plate, the first plate will abut against the end of the strip mounting groove and be limited.

[0032] Furthermore, in the first state, the second plate abuts against the upper surface of the corresponding top cover plate.

[0033] Furthermore, the first plate has a first sealing gasket that can abut against the end of the strip side plate, and the second plate has a second sealing gasket that can abut against the upper surface of the top cover plate.

[0034] This increases the sealing effect of the sealing plate, achieving better sealing and protection of the strip mounting groove and preventing foreign objects from entering.

[0035] This application also discloses a photovoltaic power generation system, including a control unit, a communication unit, an angle adjustment mechanism, and a photovoltaic module of any one of the above. The angle adjustment mechanism is connected to the photovoltaic module and can adjust the angle of the photovoltaic module.

[0036] Furthermore, the communication unit is a wireless communication unit.

[0037] Furthermore, the angle adjustment structure enables adjustment of the east-west direction and the pitch angle of the photovoltaic module.

[0038] This adjustment mechanism allows the photovoltaic modules to be rotated from facing further east to facing further west. Furthermore, the adjustment mechanism can adjust the pitch angle of the photovoltaic modules.

[0039] This application also discloses a light-tracking method based on the above-mentioned photovoltaic power generation system, the light-tracking method comprising the following steps: 1) Within the set time period, at set intervals, the photovoltaic module is put into the second state and the light intensity sensor at the four movable seats is measured. 2) If the difference between the measured values ​​of the two light intensity sensors of any movable seat is greater than the set threshold, an alarm will be triggered to remind maintenance; if the difference between the measured values ​​of the two light intensity sensors of any movable seat is less than or equal to the set threshold, the average value of the measured values ​​of the two light intensity sensors will be taken as the light intensity measurement value at the location of the movable seat. 3) Adjust the angle of the photovoltaic module based on the light intensity measurements of the four movable seats obtained in step 2).

[0040] Furthermore, the set time period is from 7:00 AM to 7:00 PM. This time period can be adjusted according to location and season.

[0041] Furthermore, the set duration is 30 minutes.

[0042] Beneficial effects: 1. The photovoltaic module of this application can effectively clean the surface of the solar panel, thereby improving power generation efficiency.

[0043] 2. The photovoltaic module of this application can avoid inaccurate detection caused by the light intensity sensor being blocked.

[0044] 3. The photovoltaic module of this application has two light intensity sensors in each movable base. The average value of the measurements from the two light intensity sensors is taken, resulting in more accurate measurements. Furthermore, the difference between the measurements from the two light intensity sensors can be used to determine whether an anomaly has occurred. Attached Figure Description

[0045] Figure 1 This is a first-view schematic diagram of a photovoltaic module in its first state. Figure 2 This is a magnified view of region A; Figure 3 This is a magnified view of region B. Figure 4 This is a schematic diagram of a photovoltaic module in its first state from a second perspective. Figure 5 This is a magnified view of region C; Figure 6 This is a magnified view of region D; Figure 7 A first-view schematic diagram of a photovoltaic module in its second state; Figure 8 This is a magnified view of region E. Figure 9 This is a magnified view of region F; Figure 10 This is a schematic diagram of a photovoltaic module in its second state from a second perspective. Figure 11 This is a magnified view of region G; Figure 12 This is a magnified view of region H; Figure 13 A first-person perspective diagram showing the separation of photovoltaic module components; Figure 14 This is a magnified view of region I; Figure 15 This is a magnified view of region J. Figure 16 A magnified view of region K; Figure 17 A second-view schematic diagram showing the separation of photovoltaic module components; Figure 18 This is a magnified view of region L; Figure 19 A schematic diagram showing the removal of a portion of a photovoltaic module; Figure 20 This is a magnified view of region M. Figure 21 A schematic diagram of a photovoltaic module cut off from another angle. Figure 22 This is a magnified view of region N.

[0046] Explanation of reference numerals in the attached drawings: Mounting frame 1; Strip mounting groove 1.1; Top opening 1.2; Connecting hole 1.3; Strip channel 1.4; Connecting channel 1.5; Mounting hole 1.6; Solar panel body 2; Light intensity sensor 3; Top cover plate 4; First spring 5; Movable stop 5.1; Strip side plate 6.1; Insertion channel 6.1.1; Upper connecting plate 6.2; Lower connecting plate 6.3; Slider chamber 6.4; Slider channel 6.4.1; Insert tube 6.5; Movable seat 7.1; Push rod 7.2; Push plate 7.3; Slider rod 7.4; Slider 7.5; First plate 8.1; Second plate 8.2; Insert rod 8.3; Second spring 8.4; Air outlet chamber 9; Main chamber 9.1; Auxiliary chamber 9.2; First recessed part 9.3; First air outlet 9.4; Second recessed part 9.5; Second air outlet 9.6; Fan unit 10. Detailed Implementation

[0047] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0048] Example 1 This embodiment provides a photovoltaic module capable of efficient light tracking, including a mounting frame 1 and a solar panel body 2 mounted on the mounting frame 1. Multiple light intensity sensors 3 are installed on the mounting frame 1. The mounting frame 1 is rectangular and includes two strip-shaped mounting slots 1.1. A detection unit is installed within each strip-shaped mounting slot 1.1. A top cover plate 4 is fixed to the top of each strip-shaped mounting slot 1.1, closing the top portion of the slot. The two ends of the strip-shaped mounting slot 1.1 are not obstructed by the top cover plate 4, thus forming two top openings 1.2 between the two ends of the strip-shaped mounting slot 1.1 and the two ends of the top cover plate 4. Both ends of the strip-shaped mounting slot 1.1 are connected to an end located within the mounting frame 1. The end receiving groove is connected to a movable stop 5.1 via a first spring 5 at its closed end. The detection unit includes a mounting frame, a slider chamber 6.4 fixed to the mounting frame, an insertion tube 6.5 fixedly connected to the slider chamber 6.4, two translational movable units, and two end closing units. The slider chamber 6.4 has an inner chamber and four slider channels 6.4.1 communicating with the inner chamber. The translational movable unit includes a movable seat 7.1, a push rod 7.2 fixedly connected to the movable seat 7.1, and a... The push rod 7.2 is fixedly connected to the push plate 7.3 and two slider rods 7.4 fixedly connected to the push plate 7.3. The light intensity sensor 3 is installed at the movable seat 7.1. The end of the slider rod 7.4 is connected to a slider 7.5 located in the slider channel. The mounting frame includes two strip side plates 6.1 and a connecting plate connecting the two strip side plates 6.1. The end sealing unit includes a sealing plate and multiple insertion rods 8.3 fixedly connected to the sealing plate. Both ends of the strip side plate 6.1 have insertion channels 6. 1.1 A second spring 8.4 is connected between the closed end of the insertion channel 6.1.1 and the insertion rod 8.3; the mounting frame 1 has an internal channel, and the strip mounting groove 1.1 has a connecting hole 1.3 through which the insertion tube 6.5 is inserted and communicates with the internal channel; an air outlet chamber 9 and a plurality of fan units 10 are fixed at the mounting frame 1, the internal space of the air outlet chamber 9 communicates with the internal channel, the fan units 10 can blow air into the internal space of the air outlet chamber 9, and the air outlet chamber 9 has a plurality of air outlet holes.

[0049] The internal channel includes two strip channels 1.4 and a connecting channel 1.5 connecting the two strip channels. The two strip channels 1.4 are respectively located below the two strip mounting slots 1.1, and the connecting channel is located below the air outlet chamber 9. The fan unit 10 is installed below the mounting frame 1 and can blow air into the connecting channel. There are multiple fan units 10, which are arranged in a row at equal intervals. Two light intensity sensors 3 are installed at each movable seat 7.1. The air outlet chamber 9 includes a main chamber 9.1 and two auxiliary chambers 9.2 connected to the main chamber 9.1. The main chamber 9.1 has a first recessed portion 9.3, and the auxiliary chambers 9.2 have second recessed portions 9.5. Multiple air outlets are located at multiple first air outlets 9.4 and multiple second air outlets 9.6. Each first recessed portion has multiple first air outlets 9.4, and each second recessed portion has multiple second air outlets 9.6. The air outlets from the two auxiliary chambers 9.2 are used to blow air into the space above the two strip-shaped mounting slots 1.1. Each end of the strip-shaped side plate 6.1 has two insertion channels 6.1.1, one end of which is closed. Each closed plate is fixedly connected to four insertion rods 8.3. Each movable stop 5.1 is connected to two first springs 5. Multiple connecting plates are connected between the two strip-shaped side plates 6.1 of the mounting bracket. These connecting plates are divided into two upper connecting plates 6.2 and two lower connecting plates 6.3. The push rod 7.2 is located between the upper connecting plates 6.2 and the lower connecting plates 6.3. The strip-shaped mounting groove 1.1 is cuboid in shape, the top cover plate 4 is rectangular, and the top opening 1.2 is rectangular. Both sides of the mounting frame 1 have multiple mounting holes 1.6.

[0050] The enclosed plate includes a first plate 8.1 fixedly connected to the insertion rod 8.3 and a second plate 8.2 perpendicular to and fixedly connected to the first plate 8.1. The photovoltaic module can be in a first state and a second state. In the first state, all fan units 10 are in the closed state, the first plate 8.1 abuts against the end of the corresponding strip side plate 6.1, the movable stop 5.1 abuts against the corresponding first plate 8.1 and blocks the corresponding top opening 1.2, and the second plate 8.2 is located above the corresponding top cover plate 4. In the second state, all fan units 10 are in the open state, the first plate 8.1 abuts against the end of the corresponding strip mounting groove 1.1, the movable seat 7.1 abuts against the corresponding first plate 8.1, the movable stop 5.1 abuts against the corresponding first plate 8.1, and the light intensity sensor 3 is located at the top opening 1.2.

[0051] Working principle: As shown in the figure, the photovoltaic module of this application is in the first state during normal operation. At this time, the fan unit is off and does not blow air, and the movable seat is located below the top cover plate and is blocked by the top cover plate. The movable stop is located below the top opening, thereby filling the end of the strip mounting groove and ensuring that the light intensity sensor at the movable seat is not contaminated. Furthermore, the sealing plate abuts against the end of the strip side plate and the end of the top cover plate, thereby sealing the strip mounting groove and preventing foreign objects from entering the strip mounting groove.

[0052] When detection is required based on a light intensity sensor, such as Figure 7 , 10 As shown, all fan units can be activated, generating a strong airflow. Part of this airflow exits from the first and second air outlets, blowing away any foreign objects from the solar panel surface and the space above the strip mounting groove. A portion of the airflow (generated by the fan units, providing sufficient force to drive the slider in the inner chamber and keeping the first plate abutting the end of the strip mounting groove during fan operation) enters the inner chamber through the internal channel, then the slider channel, propelling the slider towards the movable stop. Overcoming the elasticity of the first and second springs, the movable seat pushes open the sealing plate and the movable stop, exposing the light intensity sensors. This allows for the acquisition of light intensity sensor measurements at four locations on the mounting frame, enabling the adjustment of the photovoltaic module's angle based on these measurements.

[0053] Example 2 This application also discloses a photovoltaic power generation system, including a control unit, a communication unit, an angle adjustment mechanism, and the photovoltaic module of Embodiment 1. The angle adjustment mechanism is connected to the photovoltaic module and can adjust the angle of the photovoltaic module. Any feasible adjustment mechanism from the prior art can be used for the adjustment mechanism. Specifically, Embodiment 2 discloses a light-tracking method based on the above-mentioned photovoltaic power generation system, the light-tracking method including the following steps: 1) Within the set time period, at set intervals, the photovoltaic module is put into the second state and the light intensity sensor at the four movable seats is measured. 2) If the difference between the measured values ​​of the two light intensity sensors of any movable seat is greater than the set threshold, an alarm will be triggered to remind maintenance; if the difference between the measured values ​​of the two light intensity sensors of any movable seat is less than or equal to the set threshold, the average value of the measured values ​​of the two light intensity sensors will be taken as the light intensity measurement value at the location of the movable seat. 3) Adjust the angle of the photovoltaic module based on the light intensity measurements of the four movable seats obtained in step 2).

[0054] Furthermore, the set time period is from 7:00 AM to 7:00 PM. This time period can be adjusted based on location and season.

[0055] Furthermore, the set duration is 30 minutes.

[0056] Therefore, the photovoltaic power generation system of this application can perform light intensity detection every 30 minutes (during which the surface of the solar panels is cleaned simultaneously), thereby adjusting the angle of the photovoltaic modules to achieve sunlight tracking and thus obtain better power generation performance. Furthermore, the light intensity sensor is only exposed during light intensity detection; it is hidden when not in use, thus protecting the sensor from contamination and ensuring that the light intensity sensor performs detection without contamination, resulting in more accurate measurements.

[0057] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A photovoltaic module capable of efficiently tracking light, characterized in that, It includes a mounting frame and a solar panel body mounted on the mounting frame, wherein multiple light intensity sensors are installed on the mounting frame.

2. The photovoltaic module capable of efficient light tracking according to claim 1, characterized in that, The mounting frame is rectangular and includes two strip-shaped mounting slots. A detection unit is installed within each slot. A top cover plate is fixed to the top of each slot, sealing its top portion. The two ends of the slots are not obstructed by the top cover plate, creating two top openings between the slot ends and the top cover plate. Both ends of each slot are connected to end-receiving slots within the mounting frame. The closed ends of these end-receiving slots are connected to movable stops via a first spring. The detection unit includes a mounting bracket, a slider chamber, a cannula, two translational movable units, and two end-closing units. The slider chamber has an inner cavity and four slider channels communicating with it. The translational movable units include movable... The mounting frame includes a light intensity sensor, a push rod, a push plate, and two slider rods mounted on the movable base. The slider rods are connected at their ends to sliders located within slider channels. The mounting frame includes two strip-shaped side plates and a connecting plate. The end-sealing unit includes a sealing plate and multiple insertion rods fixedly connected to the sealing plate. Both ends of the strip-shaped side plates have insertion channels, and a second spring connects the sealed end of the insertion channel to the insertion rod. The mounting frame has an internal channel, and the strip-shaped mounting slot has a connecting hole through which a tube is inserted and communicates with the internal channel. An air outlet chamber and multiple fan units are fixed to the mounting frame. The internal space of the air outlet chamber communicates with the internal channel, and the fan units can blow air into the internal space of the air outlet chamber. The air outlet chamber has multiple air outlet holes.

3. The photovoltaic module capable of efficient light tracking according to claim 2, characterized in that, The internal channel includes two strip channels and a connecting channel connecting the two strip channels. The two strip channels are located below the two strip mounting slots, and the connecting channel is located below the air outlet chamber. The fan unit is installed below the mounting frame and can blow air into the connecting channel.

4. The photovoltaic module capable of efficient light tracking according to claim 3, characterized in that, The fan unit has multiple units, which are arranged in a row with equal spacing; two light intensity sensors are installed at each movable seat.

5. The photovoltaic module capable of efficient light tracking according to claim 2, characterized in that, The air outlet chamber includes a main chamber and two auxiliary chambers connected to the main chamber. The main chamber has a first recessed portion, and the auxiliary chambers have a second recessed portion. The multiple air outlets are located in multiple first air outlets and multiple second air outlets. The first recessed portion has multiple first air outlets, and each second recessed portion has multiple second air outlets. The air outlets of the two auxiliary compartments are used to blow air into the space above the two strip-shaped mounting slots.

6. The photovoltaic module capable of efficient light tracking according to claim 2, characterized in that, Each end of the strip-shaped side plate has two insertion channels, one end of which is closed; each closed plate is fixedly connected to four insertion rods; each movable stop is connected to two first springs.

7. The photovoltaic module capable of efficient light tracking according to claim 2, characterized in that, The mounting bracket has multiple connecting plates between its two strip side plates, which are divided into two upper connecting plates and two lower connecting plates; the push rod is located between the upper connecting plates and the lower connecting plates.

8. The photovoltaic module capable of efficient light tracking according to claim 2, characterized in that, The strip mounting groove is rectangular, the top cover is rectangular, and the top opening is rectangular.

9. The photovoltaic module capable of efficient light tracking according to claim 2, characterized in that, The mounting frame has multiple mounting holes on both sides.

10. The photovoltaic module capable of efficient light tracking according to claim 2, characterized in that, The enclosing plate includes a first plate fixedly connected to the insertion rod and a second plate perpendicular to and fixedly connected to the first plate. The photovoltaic module can be in a first state and a second state. In the first state, all fan units are in the off state, the first plate abuts against the end of the corresponding strip side plate, the movable stop abuts against the corresponding first plate and blocks the corresponding top opening, and the second plate is located above the corresponding top cover plate. In the second state, all fan units are in the on state, the first plate abuts against the end of the corresponding strip mounting groove, the movable seat abuts against the corresponding first plate, the movable stop abuts against the corresponding first plate, and the light intensity sensor is located at the top opening.

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