Automatic light supplement and light recovery energy conversion device and automatic light supplement control method thereof

Abstract

The invention discloses an automatic light supplement and light recovery energy conversion device which is simple in structure, can perform illumination compensation on photovoltaic units with illumination intensity lower than a set value in a photovoltaic module so as to balance the illumination intensity received by each photovoltaic unit of the photovoltaic module, realizes conversion output of the whole photovoltaic module, and is high in conversion efficiency. The invention further discloses an automatic light supplementing control method of the automatic light supplementing and light recovery energy conversion device. The automatic light supplementing and light recovery energy conversion device has the advantages that the structure is simple, light supplementing can be automatically adjusted, the photovoltaic unit can achieve the optimal conversion efficiency during working, effective electric energy is converted, the energy conversion efficiency is high, and use is stable and reliable.

Description

[Technical field]

[0001] The present invention relates to the field of energy, and in particular to an automatic light filling and light recycling energy conversion device. The present invention also relates to an automatic light filling and light recycling energy conversion device and an automatic light filling control method. [Background Technology]

[0002] Photovoltaic power generation is increasingly used outdoors. However, most photovoltaic panels are tilted in one direction to receive sunlight. As the sun rises and sets, the angle of the sunlight changes, limiting the effective amount of sunlight received by the panels and resulting in low conversion efficiency. While photovoltaic panels that can adjust their angle to follow the sun's rays are currently available on the market, their structures are generally complex and only partially receive sunlight, leaving much of it unabsorbed. Therefore, there is a need for photovoltaic units that can receive sunlight over a large area for energy conversion.

[0003] In addition, the intensity of sunlight changes constantly during the 10 to 14 hours from sunrise to sunset, and photovoltaic panels require a certain level of illumination to start working. In addition, if photovoltaic panels are to achieve optimal conversion efficiency, they have a certain range of requirements for the intensity and wavelength of sunlight. Therefore, it is necessary to develop an energy conversion device that can provide certain light compensation when the sunlight intensity is insufficient, such as at dawn or dusk, or in weather with slightly insufficient light intensity, so as to achieve the best receiving efficiency for photovoltaic panels.

[0004] The present invention is made based on the above situation. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide an automatic light filling and light recycling energy conversion device with a simple structure. It can perform light compensation on photovoltaic units in the photovoltaic module whose light intensity is lower than the set value to balance the light intensity received by each photovoltaic unit of the photovoltaic module, thereby realizing the conversion output of the entire photovoltaic module with high conversion efficiency.

[0006] In order to solve the above technical problems, the present invention provides an automatic fill light and light recycling energy conversion device, including a main pole and a lighting fill light module, wherein a plurality of photovoltaic modules are installed above and below the main pole, and the photovoltaic module is composed of a plurality of photovoltaic units arranged around the outside of the main pole, and the photovoltaic units are used to convert light energy into electrical energy. The lighting fill light module performs light compensation on the photovoltaic units in the photovoltaic module whose light intensity is lower than the set value to balance the light intensity received by each photovoltaic unit of the photovoltaic module, and the lighting fill light module is electrically connected to a control system that can control it to start the fill light work, and the photovoltaic units are electrically connected to the control system.

[0007] In the automatic light filling and light recycling energy conversion device as described above, the photovoltaic units are arranged outwardly and upwardly, and the upper ends of the photovoltaic units on the lower layer are located inside the lower ends of the photovoltaic units on the upper layer.

[0008] In the automatic light-filling and light-recycling energy conversion device as described above, an assembly plate is provided on the main pole, and the lower end of the photovoltaic unit is mounted on the assembly plate.

[0009] In the automatic light-filling and light-recycling energy conversion device as described above, the upper end of the photovoltaic unit is directly or indirectly rotatably connected to the main pole, and the lower end of the photovoltaic unit is detachably mounted on the assembly plate.

[0010] As described above, an automatic fill light and light recycling energy conversion device is provided, in which a lighting fill light module capable of illuminating the front of the lower photovoltaic unit to compensate for the light exposure of the lower photovoltaic unit is installed on the assembly board of the upper photovoltaic unit, and a top cover is provided on the top of the main pole, and a lighting fill light module capable of illuminating the front of the lower photovoltaic unit to achieve light compensation is provided on the top cover.

[0011] As described above, an automatic fill light and light recycling energy conversion device is provided in which a photovoltaic unit equipped with a lighting fill light module is provided with a channel for the light emitted by the lighting fill light module to illuminate the back side thereof. The lighting fill light module is arranged on the back side of the photovoltaic unit and can illuminate toward the back side of the photovoltaic unit. Both the front and back sides of the photovoltaic unit are light-transmitting and can absorb light energy and convert it into electrical energy.

[0012] As described above, in an automatic light filling and light recycling energy conversion device, the front side of the photovoltaic unit is a light-transmitting glass plate, the back side of the photovoltaic unit is a light-transmitting glass plate, and the cells of the photovoltaic unit are located inside the double-sided glass plate; or the front side of the photovoltaic unit is a light-transmitting glass plate, the back side of the photovoltaic unit is a light-transmitting film, and the cells of the photovoltaic unit are located inside the glass plate and the film.

[0013] As described above, an automatic fill light and light recycling energy conversion device is provided, wherein the photovoltaic module is provided with a corresponding photosensitive unit capable of detecting the light intensity received by each photovoltaic unit, the lighting fill light module includes several groups of LED light-emitting modules with different powers, and the control system is electrically connected to the photosensitive unit and controls the lighting fill light module to emit light of corresponding light intensity according to the light intensity feedback from the photosensitive unit.

[0014] Another technical problem to be solved by the present invention is to provide an automatic fill light control method for an automatic fill light and light recycling energy conversion device, which has a simple structure and can automatically adjust the fill light so that the photovoltaic unit can achieve the best conversion efficiency during operation and convert it into effective electrical energy. It has the characteristics of high energy conversion efficiency and stable and reliable use.

[0015] In order to solve the above technical problems, the present invention provides an automatic fill light control method with the above automatic fill light and light recycling energy conversion device.

[0016] The photovoltaic module is provided with a corresponding photosensitive unit capable of detecting the light intensity received by each photovoltaic unit. The control system is electrically connected to the photovoltaic module, the lighting supplementary light module and the photosensitive unit and controls the operation of the photovoltaic module, the lighting supplementary light module and the photosensitive unit.

[0017] The photosensitive unit feeds back the detected light intensity signal to the control system.

[0018] When the photovoltaic module receives a certain amount of sunlight, but the light intensity received by all photovoltaic cells is lower than the preset light start value A, the control system controls the lighting supplementary light module corresponding to the photovoltaic cell of the photovoltaic module to work so that the light intensity received by each photovoltaic cell of the photovoltaic module reaches the light start value A, and the light start value A is greater than the minimum light intensity required for the photovoltaic cell to start working, and less than the conversion light intensity B required for the photovoltaic cell to reach the conversion rate m;

[0019] When the light intensity received by some photovoltaic units in the photovoltaic module is lower than the preset light start value A, and the light intensity received by another part of the photovoltaic units is equal to or greater than the light start value A, the control system controls the corresponding lighting fill light module to work to fill light for the photovoltaic units whose light intensity is lower than the light start value A;

[0020] When the light intensity received by all photovoltaic cells in the photovoltaic module is greater than the preset light start value A, and the light intensity received by some or all photovoltaic cells is less than the conversion light intensity B required for the photovoltaic cells to reach the conversion rate m, the control system controls the corresponding lighting fill light module to work to fill light for the photovoltaic cells whose light intensity is lower than the preset conversion light intensity B, so that the light intensity received by each photovoltaic cell of the photovoltaic module reaches the preset conversion light intensity B.

[0021] The automatic light filling and light recycling energy conversion device has an automatic light filling control method as described above.

[0022] The photovoltaic unit equipped with the lighting fill light module is provided with a channel for the light emitted by the lighting fill light module to illuminate the back side thereof. The lighting fill light module is arranged on the back side of the photovoltaic unit and can illuminate toward the back side of the photovoltaic unit. The lighting fill light module can also illuminate toward the front side of the photovoltaic unit below. During the set time period at night, the control system controls the operation of the lighting fill light module. The front and back sides of the photovoltaic unit are both light-transmitting and can absorb the light emitted by the lighting fill light module and convert it into electrical energy; part of the light emitted by the lighting fill light module can pass through the outside of the photovoltaic unit from the area of the photovoltaic unit that is not covered by the solar cells.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The energy conversion device of the present invention is a column structure, and its photovoltaic units are distributed in a circumferential direction around the main pole, which can receive sunlight at different angles throughout the day. The sunlight has different light intensities at different times of the day. For example, in the morning sunlight and evening sunlight, the light intensity is relatively weak, which is not enough to start the photovoltaic unit. Therefore, setting a lighting supplementary light module can realize that on the basis of receiving a certain amount of light, the photovoltaic unit can supplement the light intensity illumination to reach the set value for starting the conversion work of the photovoltaic unit, so that the sunlight that originally had no conversion efficiency can be converted into effective electrical energy after the supplementary light; at the same time, because in some periods of time, sunlight can only illuminate the photovoltaic units on one side of the main pole, while the photovoltaic units on the other side will have weak or insufficient light illumination, this will cause the photovoltaic units at different positions of the photovoltaic module to have large differences in output voltage or current, resulting in low conversion efficiency of the entire photovoltaic module. The lighting supplementary light module is used to perform light compensation to balance the light intensity received by each photovoltaic unit of the photovoltaic module, so that the entire photovoltaic module can work efficiently and improve the conversion rate of solar energy.

[0025] 2. The upper end of the photovoltaic unit of the present invention is directly or indirectly rotatably connected to the main pole, and the lower end of the photovoltaic unit is detachably mounted on the assembly plate. The photovoltaic unit can be flipped outward to facilitate maintenance.

[0026] 3. When the automatic fill light energy conversion device of the present invention is filling light, the photosensitive unit will feed back the detected light intensity signal to the control system. When the photovoltaic module is in different time periods of the day, the control system can control the lighting fill light module to start multiple fill light working modes according to the light intensity received by the photovoltaic unit, thereby achieving high-efficiency energy conversion.

[0027] 4. The automatic fill-light energy conversion device of the present invention allows the control system to directly control the lighting module to operate and emit light during a set time period at night. The light emitted downward by the lighting module can provide nighttime illumination, while the photovoltaic cells below can also recycle the light. Light directed toward the back of the photovoltaic cell is not only recycled by the cell, but also partially transmits through the cell from areas not covered by the cells, creating an artistic landscape effect. [Brief Description of the Drawings]

[0028] Figure 1 It is a structural schematic diagram of the automatic light filling and light recycling energy conversion device of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the automatic light-filling and light-recycling energy conversion device of the present invention after the photovoltaic unit is turned on;

[0030] Figure 3 This is a front view of the automatic light filling and light recycling energy conversion device of the present invention;

[0031] Figure 4 This invention Figure 3 sectional view of

[0032] Figure 5 This is a schematic structural diagram of the photovoltaic unit of the present invention installed on an assembly board;

[0033] Figure 6 It is a structural schematic diagram of another embodiment of the present invention in which a photovoltaic unit is installed on an assembly board. [Specific implementation method]

[0034] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0035] like Figure 1-5 An automatic fill light and light recycling energy conversion device shown includes a main pole 1 and a lighting fill light module 3. Several photovoltaic modules 2 are installed above and below the main pole 1. The photovoltaic module 2 is composed of several photovoltaic units 21 arranged around the outside of the main pole 1. The photovoltaic units 21 are used to convert light energy into electrical energy. The lighting fill light module 3 performs light compensation on the photovoltaic units 21 in the photovoltaic module 2 whose light intensity is lower than the set value to balance the light intensity received by each photovoltaic unit 21 of the photovoltaic module 2. The lighting fill light module 3 is electrically connected to a control system that can control it to start the fill light work, and the photovoltaic units 21 are electrically connected to the control system. The column-type energy conversion device has photovoltaic units distributed in a circumferential direction around the main pole, and can receive sunlight at different angles throughout the day. The sunlight has different light intensities at different times of the day. For example, in the morning sunlight and evening sunlight, the light intensity is relatively weak, which is not enough to start the photovoltaic units. Therefore, setting up a lighting fill light module 3 can achieve the goal of supplementing the light intensity illumination to reach the set value for the photovoltaic units to start the conversion work on the basis of receiving a certain amount of light, so that the sunlight that originally had no conversion efficiency can be converted into effective electrical energy after the fill light; at the same time, because in some periods of time, sunlight can only illuminate the photovoltaic units on one side of the main pole, while the photovoltaic units on the other side will have weak or insufficient light illumination, this will cause the photovoltaic units at different positions of the photovoltaic module to have large differences in output voltage or current, resulting in low conversion efficiency of the entire photovoltaic module. The lighting fill light module 3 is used to perform light compensation to balance the light intensity received by each photovoltaic unit 21 of the photovoltaic module 2, so that the entire photovoltaic module can work efficiently and improve the conversion rate of solar energy.

[0036] Preferably, the photovoltaic module 2 is provided with a corresponding photosensitive unit capable of detecting the light intensity received by each photovoltaic unit 21. The control system is electrically connected to the photosensitive unit and controls the lighting fill light module 3 to emit light of corresponding light intensity according to the light intensity feedback from the photosensitive unit. The photosensitive unit may include a light intensity sensor, etc. To facilitate the control system deployment, the lighting fill light module generates a radiation wavelength that imitates sunlight, and LED light modules of different powers can be used to supplement the light intensity to reach the set light intensity, which can supplement the light as quickly as possible and realize light energy conversion. The lighting fill light module 3 may include several groups of LED light modules with different powers. The lighting fill light module can also be set to include several groups of LED light modules that can illuminate different positions of the photovoltaic units 21 in the lower layer.

[0037] Furthermore, in order to facilitate ventilation and heat dissipation so that the photovoltaic module can maintain an efficient working state during the light energy conversion process, several groups of heat dissipation fans are installed on the main pole 1 or the assembly plate 11.

[0038] The photovoltaic unit 21 is arranged to be tilted outward and upward, and the upper end of the photovoltaic unit 21 located in the lower layer is located on the inner side of the lower end of the photovoltaic unit 21 in the upper layer. An assembly plate 11 is provided on the main pole 1, and the lower end of the photovoltaic unit 21 is mounted on the assembly plate 11. The assembly plate can be a polygonal plate structure, and the photovoltaic unit and the polygonal assembly plate can be assembled and spliced to form a polygonal photovoltaic module, such as a hexagonal photovoltaic module composed of six photovoltaic units. The upper end of the photovoltaic unit 21 is directly or indirectly rotatably connected to the main pole 1, that is, the upper end of the photovoltaic unit 21 can be directly mounted on the main pole 1, or the upper end of the photovoltaic unit can be rotatably connected to the cross bar by adding a cross bar to the main pole. At the same time, the lower end of the photovoltaic unit 21 can be detachably mounted on the assembly plate 11. The upper and lower ends of the photovoltaic unit can be installed by hinges, such as Figure 6 As shown. The photovoltaic unit can thus be flipped outward for easy maintenance. The bracket can be made of translucent or non-translucent materials. The main pole 1 can be cylindrical or N-gonal, with N being greater than or equal to 3.

[0039] The photovoltaic module of the present invention is less affected by environmental factors. For example, in rainy weather, when sunlight intensity is insufficient, supplementary lighting can be used to achieve the required intensity to convert energy. It is stable and reliable to use, and the main pole can be set at a higher height, occupying a small area, and can receive light energy all the time from sunrise to sunset. It can also be adjusted according to the surrounding environment. For example, if there are buildings or trees on one side of the main pole that block the view, the photovoltaic unit can be installed only on the unobstructed side.

[0040] The assembly panels 11 of the upper photovoltaic cells 21 are mounted with a lighting fill-light module 3 capable of illuminating the front surfaces of the lower photovoltaic cells 21 to compensate for the illumination of the lower photovoltaic cells 21. For the photovoltaic cells on the top layer, a top cover 5 is provided on top of the main pole 1, on which a lighting fill-light module 3 is mounted, capable of illuminating the front surfaces of the lower photovoltaic cells 21 to compensate for the illumination of the lower photovoltaic cells 21. The top cover can be fastened to the main pole using screws.

[0041] like Figure 2 and 5 As shown, the photovoltaic unit 21, equipped with the lighting fill light module 3, is provided with a channel for the light emitted by the lighting fill light module 3 to illuminate its back side. The lighting fill light module 3 is arranged on the back side of the photovoltaic unit 21 and can illuminate the back side of the photovoltaic unit 21. The front and back sides of the photovoltaic unit 21 are both light-transmissive and can absorb light energy and convert it into electrical energy. When illuminating the back side of the photovoltaic unit, the light can be transmitted from areas not blocked by the photovoltaic unit's cells, such as the blank areas around the photovoltaic unit and the gaps between all cells, creating an artistic nightscape effect. The back side of the photovoltaic unit can also absorb light, which can be recycled for secondary use.

[0042] The front side of the photovoltaic unit 21 is a translucent glass plate, the back side of the photovoltaic unit 21 is a translucent glass plate, and the cells of the photovoltaic unit 21 are located inside the double-sided glass plate; or the front side of the photovoltaic unit 21 is a translucent glass plate, the back side of the photovoltaic unit 21 is a translucent film, and the cells of the photovoltaic unit 21 are located inside the glass plate and the film.

[0043] An automatic fill light control method for an automatic fill light and light recycling energy conversion device,

[0044] The photovoltaic module 2 is provided with a corresponding photosensitive unit capable of detecting the light intensity received by each photovoltaic unit 21. The control system is electrically connected to the photovoltaic module 2, the lighting fill light module 3 and the photosensitive unit and controls the operation of the photovoltaic module 2, the lighting fill light module 3 and the photosensitive unit.

[0045] The photosensitive unit feeds back the detected light intensity signal to the control system.

[0046] When the photovoltaic module receives a certain amount of sunlight, but the light intensity received by all photovoltaic cells 21 is lower than the preset light start value A, the control system controls the lighting supplementary light module 2 corresponding to the photovoltaic cell 21 of the photovoltaic module to operate so that the light intensity received by each photovoltaic cell 21 of the photovoltaic module reaches the light start value A, so as to effectively utilize sunlight for power generation. The light start value A is greater than the minimum light intensity required for the photovoltaic cell to start working, and less than the conversion light intensity B required for the photovoltaic cell 21 to reach the conversion rate m, where the conversion rate m is the best conversion rate that can be achieved by a single photovoltaic cell in the current existing technology. Preferably, m is between 13% and 27%. Of course, with the continuous advancement and development of photovoltaic cell technology, the conversion rate m can also be a larger percentage.

[0047] When the light intensity received by some photovoltaic cells 21 in the photovoltaic module is lower than the preset light start value A, while the light intensity received by another part of the photovoltaic cells 21 is equal to or greater than the light start value A, the control system controls the corresponding lighting fill light module 3 to work to fill light for the photovoltaic cells 21 with light intensity lower than the light start value A, so as to balance the light intensity received by different photovoltaic cells 21 in the photovoltaic module and improve the energy conversion rate;

[0048] When the light intensity received by all photovoltaic cells 21 in the photovoltaic module is greater than the preset light start value A, and the light intensity received by some or all photovoltaic cells 21 is less than the conversion light intensity B required for the photovoltaic cells 21 to reach the conversion rate m, the control system controls the corresponding lighting fill light module 2 to work to fill light for the photovoltaic cells 21 whose light intensity is lower than the preset conversion light intensity B, so that the light intensity received by each photovoltaic cell 21 of the photovoltaic module reaches the preset conversion light intensity B, so as to balance the light intensity received by different photovoltaic cells 21 in the photovoltaic module and improve the energy conversion rate so that the photovoltaic module can better achieve.

[0049] The balance mentioned here does not mean making the light intensity of each photovoltaic unit 21 equal, but rather means narrowing the difference in light intensity between different photovoltaic units 21 in the photovoltaic module so that the light intensity between these photovoltaic units 21 is at or close to the same level, for example, all reach the light start value A or all reach the light intensity required for conversion to light intensity B.

[0050] The illumination start value A and the converted illumination intensity B preset in the control system can be determined by conducting experiments on the automatic light filling and light recycling energy conversion device.

[0051] At night, during the set time period, the control system can directly control the lighting fill light module to provide night lighting. Because the lighting fill light module can simultaneously emit light upward and downward, in order to recycle the light emitted by the lighting fill light module, a channel is provided in the photovoltaic unit 21 on which the lighting fill light module 3 is installed, which can allow the light emitted by the lighting fill light module 3 to illuminate the back side thereof. The lighting fill light module 3 is arranged on the back side of the photovoltaic unit 21 and can illuminate the back side of the photovoltaic unit 21. The light emitted downward by the lighting fill light module 3 can illuminate the front side of the photovoltaic unit below, and the lighting fill light module 3 is also located on the back side of the photovoltaic unit 21 and can emit light towards the back side of the photovoltaic unit 21. The front and back sides of the photovoltaic unit 21 are both light-transmitting and can absorb light, and the light emitted by the lighting fill light module can be fully utilized and recycled and converted into electrical energy.

[0052] In the present invention, the light emitted by the lighting fill light module can be used for night lighting. At the same time, the photovoltaic unit below can also recycle the lighting light. The light irradiated to the back of the photovoltaic unit can be recycled by the photovoltaic unit. At the same time, part of the light can also pass through the outside of the photovoltaic unit from the area not covered by the photovoltaic unit's cells, thereby achieving an artistic landscape effect.

Claims

1. An automatic light-filling and light-recycling energy conversion device, characterized by: The invention comprises a main pole (1) and a lighting supplementary light module (3); a plurality of photovoltaic modules (2) are mounted on the main pole (1) at the top and bottom; the photovoltaic module (2) is composed of a plurality of photovoltaic units (21) arranged around the outside of the main pole (1); the photovoltaic units (21) are used to convert light energy into electrical energy; the lighting supplementary light module (3) performs light compensation on photovoltaic units (21) in the photovoltaic module (2) whose light intensity is lower than a set value to balance the light intensity received by each photovoltaic unit (21) in the photovoltaic module (2); the lighting supplementary light module (3) is electrically connected to a control system capable of controlling the start of the supplementary light operation; and the photovoltaic units (21) are electrically connected to the control system.

2. The automatic light-filling and light-recycling energy conversion device according to claim 1, characterized in that: The photovoltaic units (21) are arranged outwardly and upwardly, with the upper end of the photovoltaic unit (21) located in the lower layer located inside the lower end of the photovoltaic unit (21) in the upper layer.

3. The automatic light-filling and light-recycling energy conversion device according to claim 2, characterized in that: An assembly plate (11) is provided on the main pole (1), and the lower end of the photovoltaic unit (21) is mounted on the assembly plate (11).

4. The automatic light-filling and light-recycling energy conversion device according to claim 3, characterized in that: The upper end of the photovoltaic unit (21) is directly or indirectly rotatably connected to the main rod (1), and the lower end of the photovoltaic unit (21) is detachably mounted on the assembly plate (11).

5. The automatic light-filling and light-recycling energy conversion device according to claim 3 or 4, characterized in that: An illumination fill-light module (3) capable of illuminating the front surface of the lower photovoltaic unit (21) to compensate for the illumination of the lower photovoltaic unit (21) is installed on the assembly plate (11) of the upper photovoltaic unit (21); a top cover (5) is provided on the top of the main pole (1); and the illumination fill-light module (3) capable of illuminating the front surface of the lower photovoltaic unit (21) to achieve illumination compensation is provided on the top cover (5).

6. The automatic light-filling and light-recycling energy conversion device according to any one of claims 2 to 4, characterized in that: A photovoltaic unit (21) equipped with a lighting fill light module (3) is provided with a channel for irradiating the back side thereof with light emitted by the lighting fill light module (3); the lighting fill light module (3) is arranged on the back side of the photovoltaic unit (21) and can irradiate the back side of the photovoltaic unit (21); and both the front and back sides of the photovoltaic unit (21) are light-transmissive and can absorb light energy and convert it into electrical energy.

7. The automatic light-filling and light-recycling energy conversion device according to claim 6, characterized in that: The front side of the photovoltaic unit (21) is a light-transmitting glass plate, the back side of the photovoltaic unit (21) is a light-transmitting glass plate, and the cell of the photovoltaic unit (21) is located inside the double-sided glass plate; or the front side of the photovoltaic unit (21) is a light-transmitting glass plate, the back side of the photovoltaic unit (21) is a light-transmitting film, and the cell of the photovoltaic unit (21) is located inside the glass plate and the film.

8. The automatic light-filling and light-recycling energy conversion device according to any one of claims 1 to 4 and 7, characterized in that: The photovoltaic module (2) is provided with a corresponding photosensitive unit capable of detecting the light intensity received by each photovoltaic unit (21); the lighting fill light module (3) includes a plurality of groups of LED light-emitting modules with different powers; the control system is electrically connected to the photosensitive unit and controls the lighting fill light module (3) to emit light of corresponding light intensity according to the light intensity fed back by the photosensitive unit.

9. An automatic light filling control method having the automatic light filling and light recycling energy conversion device according to any one of claims 1 to 8, characterized in that: The photovoltaic module (2) is provided with a corresponding photosensitive unit capable of detecting the light intensity received by each photovoltaic unit (21); the control system is electrically connected to the photovoltaic module (2), the lighting supplementary light module (3) and the photosensitive unit and controls the operation of the photovoltaic module (2), the lighting supplementary light module (3) and the photosensitive unit. The photosensitive unit feeds back the detected light intensity signal to the control system. When the photovoltaic module receives a certain amount of sunlight, but the light intensity received by all photovoltaic units (21) is lower than a preset light start value A, the control system controls the lighting supplementary light module (3) corresponding to the photovoltaic unit (21) of the photovoltaic module to operate so that the light intensity received by each photovoltaic unit (21) of the photovoltaic module reaches the light start value A, and the light start value A is greater than the minimum light intensity required for the photovoltaic unit to start working, and less than the conversion light intensity B required for the photovoltaic unit (21) to reach the conversion rate m; When the light intensity received by some photovoltaic units (21) in the photovoltaic module is lower than a preset light start value A, and the light intensity received by another part of the photovoltaic units (21) is equal to or greater than the light start value A, the control system controls the corresponding lighting fill light module (3) to work to fill light to the photovoltaic units (21) whose light intensity is lower than the light start value A; When the light intensity received by all photovoltaic units (21) in the photovoltaic module is greater than a preset light start value A, and the light intensity received by some or all photovoltaic units (21) is less than the conversion light intensity B required for the photovoltaic units (21) to achieve a conversion rate m, the control system controls the corresponding lighting fill light module (3) to work to fill light for the photovoltaic units (21) whose light intensity is lower than the preset conversion light intensity B, so that the light intensity received by each photovoltaic unit (21) in the photovoltaic module reaches the preset conversion light intensity B.

10. The automatic light filling control method of the automatic light filling and light recycling energy conversion device according to claim 9, characterized in that: A photovoltaic unit (21) equipped with a lighting fill light module (3) is provided with a channel for irradiating the back side thereof with light emitted by the lighting fill light module (3); the lighting fill light module (3) is arranged on the back side of the photovoltaic unit (21) and can irradiate toward the back side of the photovoltaic unit (21); the lighting fill light module (3) can also irradiate toward the front side of the photovoltaic unit (21) below; during a set time period at night, the control system controls the lighting fill light module (3) to operate; the front and back sides of the photovoltaic unit (21) are both light-transmissive and can absorb the light emitted by the lighting fill light module (3) and convert it into electrical energy; part of the light emitted by the lighting fill light module (3) can pass through the area of the photovoltaic unit (21) not covered by the solar cell and out of the photovoltaic unit (21).

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