Photovoltaic energy collection unit, photovoltaic power generation system and scheduling method of photovoltaic power generation system

Abstract

A photovoltaic energy collection unit, a photovoltaic power generation system and a scheduling method thereof, the photovoltaic energy collection unit comprising: a panel structure, the panel structure comprising: a photovoltaic panel, the photovoltaic panel being suitable for collecting light for energy collection; the light filtering thin film is located on the surface of the photovoltaic panel, the light filtering thin film is suitable for transmitting first light rays and reflecting second light rays, the wavelength of the first light rays is matched with a response curve of the photovoltaic panel, and the wavelength of the first light rays is not equal to that of the second light rays. The filtering film can transmit first light rays with relatively high absorption efficiency of the photovoltaic panel and reflect second light rays with relatively low absorption efficiency of the photovoltaic panel, so that solar radiation can be utilized to the maximum extent, light rays which are not beneficial to photovoltaic power generation can be reflected, and the utilization efficiency of solar energy can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of solar power generation, and in particular to a photovoltaic energy collection unit and a photovoltaic power generation system and a scheduling method thereof. Background Art

[0002] Solar power generation can include photovoltaic power generation and solar thermal power generation. Photovoltaic power generation refers to a power generation method that uses the photovoltaic effect of photovoltaic panels to directly convert the energy of sunlight into electrical energy; solar thermal power generation uses heliostats to reflect sunlight to heat molten salt to store thermal energy, and then uses the stored thermal energy to generate electricity.

[0003] Photovoltaic power generation directly converts the energy of sunlight and has the advantage of high energy conversion rate, but it also has the problem that the luminous power is greatly affected by light changes and the luminous power stability is poor. In comparison, solar thermal power generation can realize thermal energy storage, and the power generation is not limited by light. It is a green power generation technology with broad prospects.

[0004] However, the existing photovoltaic panels have limited efficiency in converting solar energy, which is not conducive to improving the efficiency of solar energy utilization. Summary of the invention

[0005] The problem solved by the present invention is how to further improve the utilization rate of solar energy by the light emitting system.

[0006] In order to solve the above problems, the present invention provides a photovoltaic energy collection unit, comprising:

[0007] A panel structure, the panel structure comprising: a photovoltaic panel, the photovoltaic panel being suitable for collecting light for energy collection; a filter film, the filter film being located on the surface of the photovoltaic panel, the filter film being suitable for transmitting a first light and reflecting a second light, wherein the wavelength of the first light matches the response curve of the photovoltaic panel, and the wavelengths of the first light and the second light are not equal.

[0008] Optionally, the panel structure further includes: panel glass, wherein the panel glass is located on the photovoltaic panel, and the filter film is located between the photovoltaic panel and the panel glass.

[0009] Optionally, the light filtering film is located on a surface of the panel glass facing the photovoltaic panel.

[0010] Optionally, the wavelength of the first light is within an absorption wavelength range, which is a wavelength range in a response curve of the photovoltaic panel where efficiency is greater than a preset value; and the wavelength of the second light is outside the absorption wavelength range.

[0011] Optionally, the wavelength of the second light is greater than the maximum value of the absorption wavelength range.

[0012] Optionally, the second light is infrared light.

[0013] Optionally, the filter film includes a plurality of stacked material layers; the material of any of the material layers and the thickness of any of the material layers are determined based on a response curve of the photovoltaic panel.

[0014] Optionally, it further includes: a bracket, the bracket includes a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are fixed at a preset angle; and the panel structure is connected to the first rotating shaft.

[0015] Optionally, it also includes: a connecting member, which is mounted on the periphery of the first rotating shaft and is fixedly connected to the second rotating shaft; along the axial direction of the first rotating shaft, the portion of the first rotating shaft located on one side of the connecting member is the first fixed portion of the first rotating shaft, and the portion of the first rotating shaft located on the other side of the connecting member is the second fixed portion of the first rotating shaft; the photovoltaic energy collection unit has two panel structures, and the two panel structures are respectively connected to the first fixed portion and the second fixed portion of the first rotating shaft.

[0016] Optionally, the first rotating axis and the second rotating axis are perpendicular to each other.

[0017] Optionally, it also includes: a first motor, the first motor is suitable for driving the panel structure to move around the first rotation axis; and a second motor, the second motor is suitable for driving the first rotation axis to move around the second rotation axis.

[0018] Optionally, it also includes: a controller, the controller is connected to both the first motor and the second motor, and a photovoltaic algorithm and a photothermal algorithm are set in the controller.

[0019] Accordingly, the present invention also provides a photovoltaic power generation system, comprising:

[0020] Thermal tower;

[0021] A plurality of photovoltaic energy collection units are distributed around the thermal collection tower, and the photovoltaic energy collection units are the photovoltaic energy collection units of the present invention.

[0022] Optionally, it also includes: a control module, which is configured to control the photovoltaic energy collection unit to enter a photovoltaic mode, wherein, when entering the photovoltaic mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photovoltaic angle to the sun to obtain maximum photovoltaic efficiency; the control module is also configured to control the photovoltaic energy collection unit to enter a photothermal mode, wherein, when entering the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photothermal angle to the sun to reflect sunlight to a thermal collection tower.

[0023] Optionally, the control module includes: a screening unit, the screening unit is configured to determine the photovoltaic energy collection unit that enters the photovoltaic mode; a scheduling unit, the scheduling unit is configured to generate a scheduling signal; the control module controls the photovoltaic energy collection unit to enter the photovoltaic mode according to the scheduling signal; the control module also controls the photovoltaic energy collection unit to enter the photothermal mode according to the scheduling signal.

[0024] Optionally, the screening unit includes: a judge, configured to judge whether the panel temperature of the photovoltaic energy collection unit is higher than a preset photovoltaic warning value; and a photovoltaic determiner, when the judge judges that the panel temperature of the photovoltaic energy collection unit is not higher than the photovoltaic warning value, the photovoltaic determiner is configured to determine that the photovoltaic energy collection unit enters a photovoltaic mode.

[0025] Optionally, the screening unit further includes: a photothermal determiner, and when the determiner determines that the panel temperature of the photovoltaic energy collection unit is higher than the photovoltaic warning value, the photothermal determiner is configured to determine that the photovoltaic energy collection unit enters a photothermal mode.

[0026] Optionally, the screening unit includes: a judge, configured to judge whether the air temperature is higher than a preset photovoltaic warning value; and a photovoltaic determiner, when the judge judges that the air temperature is not higher than the photovoltaic warning value, the photovoltaic determiner is configured to determine that all photovoltaic energy collection units enter photovoltaic mode.

[0027] Optionally, when the judger determines that the air temperature is higher than the photovoltaic warning value, the photovoltaic determiner is configured to determine the photovoltaic energy collection unit that enters the photovoltaic mode according to the position of each photovoltaic energy collection unit.

[0028] Optionally, the screening unit further includes: a photothermal determiner configured to determine the photovoltaic energy collection unit entering the photothermal mode based on the photovoltaic energy collection unit determined to enter the photovoltaic mode.

[0029] Optionally, the judger determines whether the temperature is higher than the photovoltaic warning value based on the time and date.

[0030] In addition, the present invention also provides a scheduling method for a photovoltaic power generation system, the photovoltaic power generation system comprising: a collector tower; a plurality of photovoltaic energy collection units, the plurality of photovoltaic energy collection units being distributed around the collector tower, the photovoltaic energy collection units being the photovoltaic energy collection units of the present invention; the scheduling method comprising: controlling the photovoltaic energy collection unit to enter a photovoltaic mode, wherein, when entering the photovoltaic mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photovoltaic angle to the sun to obtain maximum photovoltaic efficiency; controlling the photovoltaic energy collection unit to enter a photothermal mode, wherein, when entering the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photothermal angle to the sun to reflect sunlight to the collector tower.

[0031] Optionally, it also includes: determining a photovoltaic energy collection unit that enters a photovoltaic mode; generating a scheduling signal; in the step of controlling the photovoltaic energy collection unit to enter the photovoltaic mode, according to the scheduling signal, controlling the photovoltaic energy collection unit to enter the photovoltaic mode; in the step of controlling the photovoltaic energy collection unit to enter a photothermal mode, according to the scheduling signal, controlling the photovoltaic energy collection unit to enter the photothermal mode.

[0032] Optionally, the step of determining whether the photovoltaic energy collection unit enters the photovoltaic mode includes: judging whether the panel temperature of the photovoltaic energy collection unit is higher than a preset photovoltaic warning value; when the panel temperature of the photovoltaic energy collection unit is not higher than the photovoltaic warning value, determining that the photovoltaic energy collection unit enters the photovoltaic mode.

[0033] Optionally, the step of determining the photovoltaic energy collection unit to enter the photovoltaic mode further includes: when the panel temperature of the photovoltaic energy collection unit is higher than the photovoltaic warning value, determining that the photovoltaic energy collection unit enters the photothermal mode.

[0034] Optionally, the step of determining the photovoltaic energy collection units entering the photovoltaic mode includes: judging whether the air temperature is higher than a preset photovoltaic warning value; when the air temperature is not higher than the photovoltaic warning value, determining that all photovoltaic energy collection units enter the photovoltaic mode.

[0035] Optionally, the step of determining the photovoltaic energy collection unit that enters the photovoltaic mode further includes: when the air temperature is higher than the photovoltaic warning value, determining the photovoltaic energy collection unit that enters the photovoltaic mode according to the position of each photovoltaic energy collection unit.

[0036] Optionally, the step of determining the photovoltaic energy collection unit that enters the photovoltaic mode further includes: determining the photovoltaic energy collection unit that enters the photothermal mode based on the determined photovoltaic energy collection unit that enters the photovoltaic mode.

[0037] Optionally, the step of determining whether the temperature is higher than a preset photovoltaic warning value includes: determining whether the temperature is higher than the photovoltaic warning value according to the time and date.

[0038] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0039] In the technical solution of the present invention, the light filter film on the photovoltaic panel can transmit the first light and reflect the second light, wherein the wavelength of the first light matches the light response curve of the photovoltaic panel, and the wavelengths of the first light and the second light are different. The light filter film can transmit the first light with higher absorption efficiency of the photovoltaic panel and reflect the second light with lower absorption efficiency of the photovoltaic panel, which can maximize the use of solar radiation and reflect light that is not conducive to photovoltaic power generation, and can effectively improve the utilization efficiency of solar energy.

[0040] In an optional solution of the present invention, the wavelength of the second light is greater than the wavelength of the first light, and the wavelength of the second light is greater than the maximum value of the absorption wavelength range of the photovoltaic panel; the second light is infrared light. The reflection of the second light by the filter film can effectively avoid the second light from heating the photovoltaic panel, can reduce the temperature of the photovoltaic panel, and is conducive to improving the power generation efficiency of the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the structure of a photovoltaic energy collection unit in some embodiments of the present invention;

[0042] Figure 2 is a schematic diagram of an exploded structure of a photovoltaic energy collection unit in some embodiments of the present invention;

[0043] Figure 3 It is a schematic diagram of the solar radiation spectrum;

[0044] Figure 4 is a light response curve of a photovoltaic panel in some embodiments of the present invention;

[0045] Figure 5 is a schematic diagram of the structure of a bracket in a photovoltaic energy collection unit in some embodiments of the present invention;

[0046] Figure 6 is a schematic diagram of the structure of a photovoltaic power generation system in some embodiments of the present invention;

[0047] Figure 7 is a schematic flow chart of a scheduling method for a photovoltaic power generation system in some embodiments of the present invention;

[0048] Figure 8 is a flow chart of the steps of determining a photovoltaic energy collection unit that enters a photovoltaic mode in a scheduling method for a photovoltaic power generation system in some embodiments of the present invention;

[0049] Fig. 9It is a flowchart diagram of the steps of determining a photovoltaic energy collection unit that enters a photovoltaic mode in a scheduling method for a photovoltaic power generation system in other embodiments of the present invention.

[0050] Fig.10 is a functional block diagram of a control module in a photovoltaic power generation system in some embodiments of the present invention. DETAILED DESCRIPTION

[0051] As can be seen from the background technology, the existing new energy photovoltaic power generation system only has a photovoltaic energy collection unit with a single power generation mode, which is difficult to achieve the best solar energy utilization effect.

[0052] In order to solve the technical problem, the present invention provides a photovoltaic energy collection unit, comprising:

[0053] A panel structure, the panel structure comprising: a photovoltaic panel, the photovoltaic panel being suitable for collecting light for energy collection; a filter film, the filter film being located on the surface of the photovoltaic panel, the filter film being suitable for transmitting a first light and reflecting a second light, wherein the wavelength of the first light matches the light response curve of the photovoltaic panel, and the wavelengths of the first light and the second light are not equal.

[0054] According to the technical solution of the present invention, the filter film can transmit the first light with higher absorption efficiency of the photovoltaic panel and reflect the second light with lower absorption efficiency of the photovoltaic panel. It can maximize the utilization of solar radiation and reflect the light that is not conducive to photovoltaic power generation, which can effectively improve the utilization efficiency of solar energy.

[0055] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0056] refer to Figure 1 , which shows a schematic diagram of the structure of a photovoltaic energy collection unit in some embodiments of the present invention. Figure 2 , showing a schematic diagram of the exploded structure of a photovoltaic energy collection unit in some embodiments of the present invention.

[0057] The photovoltaic energy collection unit comprises:

[0058] The panel structure 110 includes: a photovoltaic panel 111, wherein the photovoltaic panel 111 is suitable for collecting light for energy collection; a filter film 120, wherein the filter film 120 is located on the surface of the photovoltaic panel 111, and the filter film 120 is suitable for transmitting a first light (indicated by a black arrow) and reflecting a second light (indicated by a red arrow), wherein the wavelength of the first light matches the light response curve of the photovoltaic panel 111, and the wavelengths of the first light and the second light are not equal.

[0059] The technical solution of the photovoltaic energy collection unit is described in detail below with reference to the accompanying drawings.

[0060] The panel structure 110 is used to collect solar energy to generate electricity.

[0061] The photovoltaic panel 111 of the panel structure 110 is suitable for collecting light for energy collection. Based on the photoelectric effect, the photovoltaic panel 111 receives photons and performs photoelectric conversion on the received photons to generate electrons to generate electrical energy. Specifically, Figure 2 As shown, the photovoltaic panel 111 has a collection surface, and the photovoltaic panel 111 receives light incident on the collection surface.

[0062] In some embodiments of the present invention, the panel structure 110 further includes: a panel glass 112, and the panel glass 112 is located on the photovoltaic panel 111. Specifically, the panel glass 112 is located on the collection surface of the photovoltaic panel 111 to protect the photovoltaic panel 111, and the photovoltaic panel 111 receives light transmitted through the panel glass 112.

[0063] The filter film 120 transmits the first light and reflects the second light to ensure that the photovoltaic panel has a higher photovoltaic efficiency as much as possible, and reflects the light that is not conducive to photovoltaic power generation, thereby effectively improving the utilization efficiency of solar energy.

[0064] like Figure 3 From the schematic diagram of the solar radiation spectrum shown, it can be seen that the radiation energy of sunlight is mainly distributed in the visible light region and the infrared light region, among which the energy in the visible light region accounts for about 50%, and the energy in the infrared light region accounts for about 43%.

[0065] Figure 4 The light response curves of the photovoltaic panels in some embodiments are shown, wherein the horizontal axis represents the wavelength in nm, and the vertical axis represents the spectral response (SR). It can be seen that in the infrared light region, the photovoltaic efficiency of the photovoltaic panel 111 decreases rapidly, and a large amount of energy is dissipated in the form of heat.

[0066] In some embodiments of the present invention, the wavelength of the first light transmitted by the filter film 120 is within the absorption wavelength range, which is the wavelength range in the light response curve of the photovoltaic panel 111 where the efficiency is greater than a preset value; the wavelength of the second light is outside the absorption wavelength range.

[0067] The filter film 120 can transmit the first light within the absorption wavelength range and reflect the second light outside the absorption wavelength range, thereby ensuring the photovoltaic efficiency of the photovoltaic panel 111 while reducing the impact of the second light on the performance of the photovoltaic panel 111.

[0068] In some embodiments, the wavelength of the second light is greater than the maximum value of the absorption wavelength range. For example, the second light is infrared light. Infrared light with a large wavelength has a significant heating effect, so that the filter film 120 reflects infrared light, which can effectively prevent the second light from heating the photovoltaic panel 111, and can effectively reduce the temperature of the photovoltaic panel 111, which is conducive to ensuring the photovoltaic efficiency of the photovoltaic panel 111.

[0069] In some embodiments of the present invention, the light filter film 120 includes a plurality of material layers stacked together; the material of any of the material layers and the thickness of any of the material layers are determined based on the light response curve of the photovoltaic panel 111. The light filter film 120 with a stacked structure is designed based on the light response curve of the photovoltaic panel 111, so that the optical properties of the light filter film 120 are suitable for the light response curve of the photovoltaic panel 111, so as to transmit the first light and reflect the second light.

[0070] Continue to refer Figure 2 In some embodiments, the panel structure 110 includes a photovoltaic panel 111 and a panel glass 112; the light filter film 120 is located between the photovoltaic panel 111 and the panel glass 112. For example, the light filter film 120 is located on the surface of the panel glass 112 facing the photovoltaic panel 111, that is, the light filter film 120 covers the surface of the panel glass 112 facing the photovoltaic panel 111. The light filter film 120 is arranged on the surface of the panel glass 112 facing the photovoltaic panel 111, which can effectively avoid the photovoltaic panel 111 from undergoing additional process steps to ensure the reliability and stability of the performance of the photovoltaic panel 111.

[0071] Continue to refer Figure 1 , combined with reference Figure 5 In some embodiments of the present invention, the photovoltaic energy collection unit further includes: a bracket 130, the bracket including a first rotating shaft 131 and a second rotating shaft 132, the first rotating shaft 131 and the second rotating shaft 132 are fixed at a preset angle; the panel structure 110 is connected to the first rotating shaft 131.

[0072] The bracket 130 is used to provide mechanical support.

[0073] The first rotating shaft 131 and the second rotating shaft 132 fixed at a preset angle are used to enable the photovoltaic energy collection unit to rotate in two dimensions in different directions, thereby achieving full-angle coverage of the photovoltaic energy collection unit's orientation angles.

[0074] In some embodiments of the present invention, the first rotating shaft 131 has a first fixing surface 131 c , and the first fixing surface 131 c is a plane and is used for the panel structure 110 .

[0075] Specifically, the first rotating shaft 131 is a prism, such as a quadrangular prism, a pentagonal prism, a hexagonal prism, an octagonal prism, etc., that is, the cross-section of the first rotating shaft 131 is a polygon in a plane perpendicular to the axial direction of the first rotating shaft 131. One surface of the prism is the first fixing surface 131c.

[0076] In some embodiments of the present invention, the second rotating shaft 132 is a circular shaft, that is, the cross-section of the second rotating shaft 132 is circular or elliptical in a plane perpendicular to the axial direction of the second rotating shaft 132. In other embodiments of the present invention, the second rotating shaft may also be a prismatic shaft, that is, the cross-section of the second rotating shaft may also be polygonal in a plane perpendicular to the axial direction of the second rotating shaft.

[0077] In some embodiments of the present invention, the first rotating shaft 131 and the second rotating shaft 132 are perpendicular to each other. Specifically, the first rotating shaft 131 is parallel to the horizontal plane; the second rotating shaft 132 is perpendicular to the horizontal plane. The first rotating shaft 131 can realize the rotation of the photovoltaic energy collection unit in a plane perpendicular to the horizontal plane; the second rotating shaft 132 can realize the rotation of the photovoltaic energy collection unit in a plane parallel to the horizontal plane.

[0078] In some embodiments of the present invention, the photovoltaic energy collection unit further includes: a connector 140, the connector 140 is sleeved on the periphery of the first rotating shaft 131, and the connector 140 is fixedly connected to the second rotating shaft 132. The connector 140 is used to achieve a fixed connection between the first rotating shaft 131 and the second rotating shaft 132.

[0079] In some embodiments, the connecting member 140 is sleeved on the middle position of the first rotating shaft 131 ; the first rotating shaft 131 passes through the connecting member 140 , and two ends of the first rotating shaft 131 along the axial direction extend from two sides of the connecting member 140 respectively.

[0080] like Figure 5 As shown, along the axial direction of the first rotating shaft 131 , the portion of the first rotating shaft 131 located on one side of the connecting member 140 is the first fixing portion 111a of the first rotating shaft 131 , and the portion of the first rotating shaft 131 located on the other side of the connecting member 140 is the second fixing portion 111b of the first rotating shaft 131 .

[0081] For example, the connecting member 140 is sleeved on the middle position of the first rotating shaft 131 along the axial direction, and the axial dimension of the first fixing portion 111 a is equal to the axial dimension of the second fixing portion 111 b.

[0082] like Figure 5As shown, in some embodiments, the photovoltaic energy collection unit has two panel structures 110 , and the two panel structures 110 are respectively connected to the first fixing portion 111 a and the second fixing portion 111 b of the first rotating shaft 131 .

[0083] Specific as Figure 1 As shown, the two panel structures 110 are respectively located on both sides of the second rotating shaft 132 , and are respectively fixedly connected to the two fixing portions (the first fixing portion 111 a and the second fixing portion 111 b ) of the first rotating shaft 131 .

[0084] It should be noted that if Figure 1 and Figure 5 In some embodiments shown, the bracket further includes: a base 150, and the base 150 is fixedly connected to the second rotating shaft 132. Specifically, the base 150 and the connecting member 140 are respectively fixed to two ends of the second rotating shaft 132 along the axial direction thereof.

[0085] In some embodiments of the present invention, the photovoltaic energy collection unit also includes: a first motor (not shown in the figure), which is suitable for controlling the axial movement of the panel structure 110 around the first rotating axis 131; a second motor (not shown in the figure), which is suitable for controlling the axial movement of the panel structure 110 around the second rotating axis 132.

[0086] The first motor causes the first rotating shaft 131 to move axially around its axial direction, thereby causing the panel structure 110 fixedly connected to the first rotating shaft 131 to move axially around the first rotating shaft 131; the second motor causes the second rotating shaft 132 to move axially around its axial direction, thereby causing the first rotating shaft 131 to move axially around the second rotating shaft 132, thereby realizing the axial movement of the panel structure 110 around the second rotating shaft 132.

[0087] In some embodiments of the present invention, the photovoltaic energy collection unit further includes: a controller (not shown in the figure), the controller is connected to both the first motor and the second motor, and a photovoltaic algorithm and a photothermal algorithm are set in the controller.

[0088] When the photovoltaic energy collection unit enters the photovoltaic mode, the controller calls the photovoltaic algorithm to make the photovoltaic panel 111 in the panel structure 110 at a photovoltaic angle to the sun to obtain the highest photovoltaic efficiency; when the photovoltaic energy collection unit enters the photothermal mode, the controller calls the photothermal algorithm to make the photovoltaic panel 111 at a photothermal angle to the sun to reflect sunlight to the collector tower.

[0089] The photovoltaic angle is the angle between the collection surface of the photovoltaic panel 111 and the sun when the maximum photovoltaic efficiency (i.e., photovoltaic power generation efficiency) is obtained; the photovoltaic algorithm in the controller determines the photovoltaic angle based on the relative position between the photovoltaic energy collection unit and the sun.

[0090] In some embodiments, the photovoltaic algorithm in the controller includes: determining the position of the sun based on the date and time according to the astronomical calendar; determining the relative position between the sun and the photovoltaic energy collection unit based on the position of the photovoltaic energy collection unit and the position of the sun, and then determining the photovoltaic angle; the controller drives the first motor and the second motor based on the photovoltaic angle determined by the photovoltaic algorithm so that the collection surface of the photovoltaic panel is at the photovoltaic angle with the sun to obtain maximum photovoltaic efficiency.

[0091] It should be noted that when the solar altitude angle is small, the sunlight is incident in a direction with a large inclination, and the photovoltaic energy collection unit may be blocked by the surrounding photovoltaic energy collection units, thereby affecting its photovoltaic efficiency; in some embodiments, the photovoltaic algorithm in the controller can also determine the photovoltaic angle when the solar altitude angle is small, based on the relative position between the photovoltaic energy collection unit and the sun, combined with the relative position between different photovoltaic energy collection units, so as to minimize the obstruction between the photovoltaic panels and obtain the maximum photovoltaic efficiency.

[0092] In some embodiments, the photovoltaic algorithm includes an inverse tracking algorithm and a tracking algorithm; the photovoltaic algorithm in the controller also includes: judging whether to use a tracking algorithm or an inverse tracking algorithm according to the date and time; judging to use a tracking algorithm when the time is within a preset tracking time period; judging to use an inverse tracking algorithm when the time is within a preset non-tracking time period. The preset tracking time period may be a time period with a large solar altitude angle in a day, such as between 10 a.m. and 3 p.m.; the preset non-tracking time period may be a time period with a small solar altitude angle in a day, i.e., a morning and evening time period in a day, such as between sunrise and 10 a.m., and from 3 p.m. to sunset.

[0093] It should be noted that in some embodiments, in the step of determining whether to use the tracking algorithm or the reverse tracking algorithm, the determination is made based on the astronomical calendar, according to the date and time. In other embodiments, the controller may also directly determine whether to use the tracking algorithm or the reverse tracking algorithm based on the solar altitude angle. Specifically, when the solar altitude angle is greater than or equal to a preset tracking threshold, the tracking algorithm is determined to be used; when the solar altitude angle is less than the tracking threshold, the reverse tracking algorithm is determined to be used.

[0094] The photothermal angle is the angle between the photovoltaic panel 111 and the sun when the sunlight is reflected by the filter film to the heat collection tower; the photothermal algorithm in the controller determines the photothermal angle according to the relative position between the photovoltaic energy collection unit and the sun.

[0095] In some embodiments, the photothermal algorithm in the controller includes: determining the position of the sun based on the date and time according to the astronomical calendar; determining the relative position between the sun and the photovoltaic energy collection unit based on the position of the photovoltaic energy collection unit and the position of the sun, and then determining the photothermal angle; based on the photothermal angle determined by the photothermal algorithm, the controller drives the first motor and the second motor so that the photovoltaic panel and the sun are at the photothermal angle to reflect sunlight to the collector tower.

[0096] Correspondingly, the present invention also provides a scheduling method for a photovoltaic power generation system.

[0097] refer to Figure 6 , showing a schematic structural diagram of a photovoltaic power generation system in some embodiments of the present invention.

[0098] The photovoltaic power generation system comprises: a heat collection tower 202; and a plurality of photovoltaic energy collection units 201, wherein the plurality of photovoltaic energy collection units 201 are distributed around the heat collection tower 202, and the photovoltaic energy collection units 201 are the photovoltaic energy collection units of the present invention.

[0099] The heat collecting tower 202 may also be referred to as a molten salt tower. The top 203 of the heat collecting tower 202 is provided with molten salt for heating and storing thermal energy. The plurality of photovoltaic energy collection units 201 are distributed on the ground around the heat collecting tower 202 in a preset arrangement.

[0100] Specifically, Figure 6 As shown, the plurality of photovoltaic energy collection units 201 are distributed in concentric circles with the heat collection tower 202 as the center. In other embodiments of the present invention, the plurality of photovoltaic energy collection units may also be distributed in concentric directions with the heat collection tower as the geometric center.

[0101] Combined with reference Figure 7 , showing a schematic flow chart of a scheduling method for a photovoltaic power generation system in some embodiments of the present invention.

[0102] The scheduling method includes: step S310, controlling the photovoltaic energy collection unit to enter the photovoltaic mode, wherein, when entering the photovoltaic mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photovoltaic angle with the sun to obtain maximum photovoltaic efficiency; step S320, controlling the photovoltaic energy collection unit to enter the photothermal mode, wherein, when entering the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photothermal angle with the sun to reflect sunlight to the collector tower.

[0103] The photovoltaic energy collection unit entering the photovoltaic mode is at the photovoltaic angle to the sun under the control of the photovoltaic algorithm to obtain the highest photovoltaic efficiency; the photovoltaic energy collection unit entering the photothermal mode is at the photothermal angle to the sun under the control of the photothermal algorithm, so that the filter film reflects sunlight to the thermal collection tower.

[0104] The scheduling method uniformly allocates the photovoltaic power generation system so that an appropriate number of photovoltaic energy collection units enter the photovoltaic mode, thereby making the system photovoltaic power generation power of the photovoltaic power generation system appropriate and compatible with the power grid; it can also make an appropriate number of photovoltaic energy collection units enter the photothermal mode, which can overcome the adverse effects of high temperature on the heating efficiency of photovoltaic panels, realize the storage of solar energy, and improve the utilization efficiency of solar energy by the photovoltaic power generation system.

[0105] In some embodiments of the present invention, Figure 7 As shown, the scheduling method also includes: step S330, determining the photovoltaic energy collection unit that enters the photovoltaic mode; step S340, generating a scheduling signal; step S310, in the step of controlling the photovoltaic energy collection unit to enter the photovoltaic mode, according to the scheduling signal, controlling the photovoltaic energy collection unit to enter the photovoltaic mode; step S320, in the step of controlling the photovoltaic energy collection unit to enter the photothermal mode, according to the scheduling signal, controlling the photovoltaic energy collection unit to enter the photothermal mode.

[0106] The photovoltaic mode and the solar thermal mode of the same photovoltaic energy collection unit are mutually exclusive, that is, the same photovoltaic energy collection unit can only enter one of the photovoltaic mode and the solar thermal mode at the same time; and the more photovoltaic energy collection units enter the photovoltaic mode, the higher the power generation power of the photovoltaic power generation system will be, but the storage rate of solar energy will be lower, and the power generation power of the photovoltaic power generation system will be lower after the sun sets; the more photovoltaic energy collection units enter the solar thermal mode, the lower the power generation power of the photovoltaic power generation system will be, but the storage rate of solar energy will be higher, and the power generation power of the photovoltaic power generation system will be higher after the sun sets.

[0107] It should be noted that even if the photovoltaic energy collection unit enters the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit still receives light to generate photovoltaic efficiency. Moreover, when the temperature of the photovoltaic panel is too high, the photovoltaic panel is at a photothermal angle to the sun, which can reduce the temperature of the photovoltaic panel and increase the photovoltaic efficiency of the photovoltaic panel.

[0108] Step S330, the step of determining the photovoltaic energy collection units that enter the photovoltaic mode, is used to determine an appropriate number of photovoltaic energy collection units to enter the photovoltaic mode and an appropriate number of photovoltaic energy collection units to enter the photothermal mode, so that the power generation power of the photovoltaic power generation system is appropriate while storing as much solar energy as possible to obtain a higher solar energy utilization efficiency.

[0109] like Figure 8 As shown, in some embodiments, step S430, the step of determining whether the photovoltaic energy collection unit enters the photovoltaic mode includes: step S431, judging whether the panel temperature of the photovoltaic energy collection unit is higher than a preset photovoltaic warning value; when the panel temperature of the photovoltaic energy collection unit is not higher than the photovoltaic warning value, step S432, determining that the photovoltaic energy collection unit enters the photovoltaic mode.

[0110] A panel temperature that is too high will reduce the photovoltaic efficiency of the photovoltaic panel. Specifically, as the panel temperature of the photovoltaic panel increases, the photovoltaic efficiency of the photovoltaic panel will decrease. Based on this change trend, the photovoltaic warning value is determined after comprehensive consideration. Step S431, a step of judging whether the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit is higher than a preset photovoltaic warning value, is used to determine whether the panel temperature of the photovoltaic energy collection unit has affected its photovoltaic efficiency.

[0111] Specifically, step S431, the step of judging whether the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit is higher than the preset photovoltaic warning value includes: obtaining the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit; comparing the panel temperature and the photovoltaic warning value; if the panel temperature is less than or equal to the photovoltaic warning value, judging that the panel temperature of the photovoltaic energy collection unit is not higher than the preset photovoltaic warning value; judging that the panel temperature of the photovoltaic energy collection unit is not higher than the preset photovoltaic warning value, step S432, determining that the photovoltaic energy collection unit enters the photovoltaic mode.

[0112] In some embodiments, step S430, determining that the photovoltaic energy collection unit enters the photovoltaic mode, further includes: when the panel temperature of the photovoltaic energy collection unit is higher than the photovoltaic warning value, step S433, determining that the photovoltaic energy collection unit enters the photothermal mode.

[0113] Specifically, if the panel temperature is greater than the photovoltaic warning value, it is judged that the panel temperature of the photovoltaic energy collection unit is higher than the preset photovoltaic warning value; if the panel temperature of the photovoltaic energy collection unit is judged to be higher than the preset photovoltaic warning value, step S433 determines that the photovoltaic energy collection unit enters the photothermal mode.

[0114] There are many photovoltaic energy collection units in the photovoltaic power generation system, and it is difficult to obtain the panel temperature of the photovoltaic panel in each photovoltaic energy collection unit, and the equipment cost is high. Therefore, in other embodiments of the present invention, it is also possible to judge whether the photovoltaic panel temperature is too high by the air temperature.

[0115] refer to Fig. 9 , showing a flow chart of the steps of determining a photovoltaic energy collection unit that enters a photovoltaic mode in a scheduling method for a photovoltaic power generation system in some other embodiments of the present invention.

[0116] The present invention will not repeat the same points as the above embodiments. The difference from the above embodiments is that in some embodiments of the present invention, it is determined whether the panel temperature of the photovoltaic energy collection unit affects its photovoltaic efficiency based on the air temperature.

[0117] Specifically, in some embodiments of the present invention, step S530, the step of determining the photovoltaic energy collection unit entering the photovoltaic mode includes: step S531, determining whether the air temperature is higher than a preset photovoltaic warning value; when the air temperature is not higher than the photovoltaic warning value, step S532, determining that all photovoltaic energy collection units enter the photovoltaic mode.

[0118] As the temperature rises, the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit will also rise. The temperature can reflect the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit to a certain extent. It is simple and convenient to judge whether the temperature of the photovoltaic panel is too high and affects the photovoltaic efficiency by the temperature.

[0119] Specifically, step S531, the step of determining whether the air temperature is higher than a preset photovoltaic warning value includes: obtaining the air temperature; comparing the air temperature with the photovoltaic warning value; if the air temperature is less than or equal to the photovoltaic warning value, determining that the air temperature is not higher than the photovoltaic warning value; when it is determined that the air temperature is not higher than the photovoltaic warning value, step S532, determining that all photovoltaic energy collection units enter photovoltaic mode.

[0120] It should be noted that, in some embodiments, in the step of determining whether the air temperature is higher than the photovoltaic warning value, the photovoltaic warning value is the air temperature when the panel temperature of the photovoltaic panel is too high, resulting in a decrease in photovoltaic efficiency. That is to say, when the air temperature is higher than the photovoltaic warning value, the panel temperature of the photovoltaic panel is too high, resulting in a decrease in photovoltaic efficiency.

[0121] In some exemplary embodiments, the step of determining whether the temperature is higher than a preset photovoltaic warning value includes: determining whether the temperature is higher than the photovoltaic warning value according to the time and date. The temperature changes with the seasons and the rising and setting of the sun: the temperature is higher in summer and lower in winter; the temperature is higher at noon and lower in the morning and evening. The approximate distribution range of the temperature can be directly obtained through the time and date to determine the temperature.

[0122] It should be noted that the method of judging whether the temperature is higher than the photovoltaic warning value based on the time and date is only an example. In other embodiments of the present invention, the temperature can also be directly obtained by a temperature detection element for judgment.

[0123] In some embodiments, step S530, the step of determining the photovoltaic energy collection unit entering the photovoltaic mode also includes: when the temperature is higher than the photovoltaic warning value, step S533, determining the photovoltaic energy collection unit entering the photovoltaic mode according to the position of each photovoltaic energy collection unit.

[0124] Different photovoltaic energy collection units are located at different positions, have different relative positions to the heat collection tower, and have different angles to the sun: photovoltaic panels facing the sun are more likely to have excessive temperatures and affect photovoltaic efficiency; therefore, when the temperature is higher than the photovoltaic warning value, the photovoltaic energy collection unit that enters the photovoltaic mode is determined based on the position of each photovoltaic energy collection unit. Specifically, in the step of determining the photovoltaic energy collection unit that enters the photovoltaic mode based on the position of each photovoltaic energy collection unit, the photovoltaic energy collection unit that is facing away from the sun is determined to enter the photovoltaic mode.

[0125] In some embodiments, the step of determining the photovoltaic energy collection unit that enters the photovoltaic mode based on the position of each photovoltaic energy collection unit includes: determining the relative position of each photovoltaic energy collection unit and the sun based on the position of each photovoltaic energy collection unit and the position of the sun, and then obtaining the photovoltaic energy collection unit that enters the photovoltaic mode.

[0126] For example, according to the position of each photovoltaic energy collection unit, the step of determining the photovoltaic energy collection unit entering the photovoltaic mode also includes: obtaining the position of each photovoltaic energy collection unit and the position of the sun. Specifically, the step of obtaining the position of each photovoltaic energy collection unit and the position of the sun includes: obtaining the position of each photovoltaic energy collection unit through a global positioning system (for example, Global Positioning System, GPS); obtaining the position of the sun based on the astronomical calendar and time date.

[0127] It should be noted that in other embodiments of the present invention, in the step of obtaining the position of each photovoltaic energy collection unit and the position of the sun, the relative position between the photovoltaic energy collection unit and the sun can also be directly obtained by a detector to obtain the photothermal efficiency of the photovoltaic energy collection unit.

[0128] like Fig. 9 As shown, in some embodiments, step S530, the step of determining the photovoltaic energy collection unit entering the photovoltaic mode also includes: step S534, based on the determined photovoltaic energy collection unit entering the photovoltaic mode, determining the photovoltaic energy collection unit entering the photothermal mode.

[0129] Specifically, based on the photovoltaic energy collection unit determined to enter the photovoltaic mode, in the step of determining the photovoltaic energy collection unit to enter the solar thermal mode, after determining the photovoltaic energy collection unit to enter the photovoltaic mode, determine that the remaining photovoltaic energy collection units in the photovoltaic power generation system enter the solar thermal mode.

[0130] Correspondingly, the present invention also provides a photovoltaic power generation system.

[0131] refer to Figure 6 , showing a schematic structural diagram of a photovoltaic power generation system in some embodiments of the present invention.

[0132] The photovoltaic power generation system comprises: a heat collection tower 202; and a plurality of photovoltaic energy collection units 201, wherein the plurality of photovoltaic energy collection units 201 are distributed around the heat collection tower 202, and the photovoltaic energy collection units 201 are the photovoltaic energy collection units of the present invention.

[0133] The heat collecting tower 202 may also be referred to as a molten salt tower. The top 203 of the heat collecting tower 202 is provided with molten salt for heating and storing thermal energy. The plurality of photovoltaic energy collection units 201 are distributed on the ground around the heat collecting tower 202 in a preset arrangement.

[0134] Specifically, Figure 6 As shown, the plurality of photovoltaic energy collection units 201 are distributed in concentric circles with the heat collection tower 202 as the center. In other embodiments of the present invention, the plurality of photovoltaic energy collection units may also be distributed in concentric directions with the heat collection tower as the geometric center.

[0135] In some embodiments of the present invention, the photovoltaic power generation system also includes: a control module, the control module is configured to control the photovoltaic energy collection unit to enter a photovoltaic mode, wherein, when entering the photovoltaic mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photovoltaic angle to the sun to obtain maximum photovoltaic efficiency; the control module is also configured to control the photovoltaic energy collection unit to enter a photothermal mode, wherein, when entering the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photothermal angle to the sun to reflect sunlight to a thermal collection tower.

[0136] The photovoltaic energy collection unit entering the photovoltaic mode is at the photovoltaic angle to the sun under the control of the photovoltaic algorithm to obtain the highest photovoltaic efficiency; the photovoltaic energy collection unit entering the photothermal mode is at the photothermal angle to the sun under the control of the photothermal algorithm, so that the filter film reflects sunlight to the thermal collection tower.

[0137] The control module uniformly adjusts the photovoltaic power generation system so that an appropriate number of photovoltaic energy collection units enter the photovoltaic mode, thereby making the system photovoltaic power generation power of the photovoltaic power generation system appropriate and compatible with the power grid; it can also make an appropriate number of photovoltaic energy collection units enter the photothermal mode, which can overcome the adverse effects of high temperature on the heating efficiency of photovoltaic panels, realize the storage of solar energy, and improve the utilization efficiency of solar energy by the photovoltaic power generation system.

[0138] In some embodiments of the present invention, Fig.10 As shown, the control module 601 includes: a screening unit 610, the screening unit 610 is configured to determine the photovoltaic energy collection unit entering the photovoltaic mode; a scheduling unit 620, the scheduling unit 620 is configured to generate a scheduling signal; the control module 601 controls the photovoltaic energy collection unit to enter the photovoltaic mode according to the scheduling signal; the control module 601 also controls the photovoltaic energy collection unit to enter the photothermal mode according to the scheduling signal.

[0139] The photovoltaic mode and the solar thermal mode of the same photovoltaic energy collection unit are mutually exclusive, that is, the same photovoltaic energy collection unit can only enter one of the photovoltaic mode and the solar thermal mode at the same time; and the more photovoltaic energy collection units enter the photovoltaic mode, the higher the power generation power of the photovoltaic power generation system will be, but the storage rate of solar energy will be lower, and the power generation power of the photovoltaic power generation system will be lower after the sun sets; the more photovoltaic energy collection units enter the solar thermal mode, the lower the power generation power of the photovoltaic power generation system will be, but the storage rate of solar energy will be higher, and the power generation power of the photovoltaic power generation system will be higher after the sun sets.

[0140] It should be noted that even if the photovoltaic energy collection unit enters the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit still receives light to generate photovoltaic efficiency, and when the temperature of the photovoltaic panel is too high, the photovoltaic panel is at a photothermal angle with the sun, which can reduce the temperature of the photovoltaic panel and improve the photovoltaic efficiency of the photovoltaic panel. The screening unit 610 is used to determine the appropriate number of photovoltaic energy collection units to enter the photovoltaic mode and the appropriate number of photovoltaic energy collection units to enter the photothermal mode, so that the power generation power of the photovoltaic power generation system is appropriate, and as much solar energy as possible is stored to obtain a higher solar energy utilization efficiency.

[0141] In some embodiments, the screening unit 610 includes: a judger 611, which is configured to determine whether the panel temperature of the photovoltaic energy collection unit is higher than a preset photovoltaic warning value; a photovoltaic determiner 612, when the judger 611 determines that the panel temperature of the photovoltaic energy collection unit is not higher than the photovoltaic warning value, the photovoltaic determiner 612 is configured to determine that the photovoltaic energy collection unit enters the photovoltaic mode.

[0142] The panel temperature is too high, which will reduce the photovoltaic efficiency of the photovoltaic panel. Specifically, as the panel temperature of the photovoltaic panel increases, the photovoltaic efficiency of the photovoltaic panel will decrease. Based on this change trend, the photovoltaic warning value is determined after comprehensive consideration. The judge 611 determines whether the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit is higher than the preset photovoltaic warning value, so as to determine whether the panel temperature of the photovoltaic energy collection unit has affected its photovoltaic efficiency.

[0143] Specifically, the judge 611 obtains the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit; the judge 611 also compares the panel temperature and the photovoltaic warning value; if the panel temperature is less than or equal to the photovoltaic warning value, the judge 611 judges that the panel temperature of the photovoltaic energy collection unit is not higher than the preset photovoltaic warning value; if the judge 611 judges that the panel temperature of the photovoltaic energy collection unit is not higher than the preset photovoltaic warning value, the photovoltaic determiner 612 determines that the photovoltaic energy collection unit enters the photovoltaic mode.

[0144] In some embodiments, the screening unit 610 further includes: a photothermal determiner 613. When the judger 611 determines that the panel temperature of the photovoltaic energy collection unit is higher than the photovoltaic warning value, the photothermal determiner 613 is configured to determine that the photovoltaic energy collection unit enters a photothermal mode.

[0145] Specifically, the panel temperature is greater than the photovoltaic warning value, and the judger 611 judges that the panel temperature of the photovoltaic energy collection unit is higher than the preset photovoltaic warning value; the judger 611 judges that the panel temperature of the photovoltaic energy collection unit is higher than the preset photovoltaic warning value, and the photothermal determiner 613 determines that the photovoltaic energy collection unit enters the photothermal mode.

[0146] There are many photovoltaic energy collection units in the photovoltaic power generation system, and it is difficult to obtain the panel temperature of the photovoltaic panel in each photovoltaic energy collection unit, and the equipment cost is high. Therefore, in other embodiments of the present invention, it is also possible to judge whether the photovoltaic panel temperature is too high by the air temperature.

[0147] In some other embodiments of the present invention, the screening unit includes: a judge, which is configured to judge whether the air temperature is higher than a preset photovoltaic warning value; and a photovoltaic determiner, which is configured to determine that all photovoltaic energy collection units enter photovoltaic mode when the judge judges that the air temperature is not higher than the photovoltaic warning value.

[0148] As the temperature rises, the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit will also rise. The temperature can reflect the panel temperature of the photovoltaic panel in the photovoltaic energy collection unit to a certain extent. It is simple and convenient to judge whether the temperature of the photovoltaic panel is too high and affects the photovoltaic efficiency by the temperature.

[0149] Specifically, the judge of the screening unit obtains the air temperature; the judge also compares the air temperature and the photovoltaic warning value; when the air temperature is less than or equal to the photovoltaic warning value, the judge determines that the air temperature is not higher than the photovoltaic warning value; when it is determined that the air temperature is not higher than the photovoltaic warning value, the photovoltaic determiner of the screening unit determines that all photovoltaic energy collection units enter the photovoltaic mode.

[0150] It should be noted that, in some embodiments, in the step of determining whether the air temperature is higher than the photovoltaic warning value, the photovoltaic warning value is the air temperature when the panel temperature of the photovoltaic panel is too high, resulting in a decrease in photovoltaic efficiency. That is to say, when the air temperature is higher than the photovoltaic warning value, the panel temperature of the photovoltaic panel is too high, resulting in a decrease in photovoltaic efficiency.

[0151] In some exemplary embodiments, the judgement device judges whether the temperature is higher than the photovoltaic warning value according to the time and date. The temperature changes with the seasons and the rising and setting of the sun: the temperature is higher in summer and lower in winter; the temperature is higher at noon and lower in the morning and evening. The approximate distribution range of the temperature can be directly obtained through the time and date to judge the temperature.

[0152] It should be noted that the method of judging whether the temperature is higher than the photovoltaic warning value based on the time and date is only an example. In other embodiments of the present invention, the judger can also directly obtain the temperature through a temperature detection element for judgment.

[0153] In some embodiments, when the determiner determines that the air temperature is higher than the photovoltaic warning value, the photovoltaic determiner is configured to determine the photovoltaic energy collection unit that enters the photovoltaic mode according to the position of each photovoltaic energy collection unit.

[0154] Different photovoltaic energy collection units are located in different positions, have different relative positions to the heat collection tower, and have different angles to the sun: photovoltaic panels facing the sun are more likely to have excessive temperatures and affect photovoltaic efficiency; therefore, when the judge determines that the temperature is higher than the photovoltaic warning value, the photovoltaic determiner determines the photovoltaic energy collection unit that enters the photovoltaic mode based on the position of each photovoltaic energy collection unit. Specifically, the photovoltaic determiner determines that the photovoltaic energy collection unit facing away from the sun enters the photovoltaic mode.

[0155] In some embodiments, the photovoltaic determiner determines the relative position of each photovoltaic energy collection unit and the sun according to the position of each photovoltaic energy collection unit and the position of the sun, thereby obtaining the photovoltaic energy collection unit that enters the photovoltaic mode.

[0156] For example, the photovoltaic determiner is further configured to obtain the position of each photovoltaic energy collection unit and the position of the sun. Specifically, the photovoltaic determiner obtains the position of each photovoltaic energy collection unit through a global positioning system (e.g., Global Positioning System, GPS); the photovoltaic determiner obtains the position of the sun based on an astronomical calendar and a time date.

[0157] It should be noted that, in other embodiments of the present invention, the photovoltaic determiner can also directly obtain the relative position between the photovoltaic energy collection unit and the sun through a detector to obtain the photothermal efficiency of the photovoltaic energy collection unit.

[0158] In some embodiments, the screening unit further includes: a photothermal determiner configured to determine the photovoltaic energy collection unit entering the photothermal mode based on the photovoltaic energy collection unit determined to enter the photovoltaic mode.

[0159] Specifically, after the photovoltaic determiner determines the photovoltaic energy collection unit that enters the photovoltaic mode, the photothermal determiner determines that the remaining photovoltaic energy collection units in the photovoltaic power generation system enter the photothermal mode.

[0160] In summary, the light filter film on the photovoltaic panel can transmit the first light and reflect the second light, wherein the wavelength of the first light matches the light response curve of the photovoltaic panel, and the wavelengths of the first light and the second light are different. The light filter film can transmit the first light with a higher absorption efficiency of the photovoltaic panel and reflect the second light with a lower absorption efficiency of the photovoltaic panel, which can maximize the use of solar radiation and reflect light that is not conducive to photovoltaic power generation, and can effectively improve the utilization efficiency of solar energy.

[0161] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A photovoltaic energy collection unit, characterized in that: include: A panel structure, the panel structure comprising: a photovoltaic panel, the photovoltaic panel being suitable for collecting light for energy collection; A filter film is located on the surface of the photovoltaic panel, and is suitable for transmitting a first light and reflecting a second light, wherein the wavelength of the first light matches the response curve of the photovoltaic panel, and the wavelengths of the first light and the second light are different.

2. The photovoltaic energy collection unit according to claim 1, characterized in that: The panel structure also includes: Panel glass, the panel glass is located on the photovoltaic panel, and the filter film is located between the photovoltaic panel and the panel glass.

3. The photovoltaic energy collection unit according to claim 2, characterized in that: The light filtering film is located on the surface of the panel glass facing the photovoltaic panel.

4. The photovoltaic energy collection unit according to claim 1, characterized in that: The wavelength of the first light is within an absorption wavelength range, and the absorption wavelength range is a wavelength range in which the efficiency of the photovoltaic panel is greater than a preset value in a response curve; The wavelength of the second light is outside the absorption wavelength range.

5. The photovoltaic energy collection unit according to claim 4, characterized in that: The wavelength of the second light is greater than the maximum value of the absorption wavelength range.

6. The photovoltaic energy collection unit according to claim 4 or 5, characterized in that: The second light is infrared light.

7. The photovoltaic energy collection unit according to claim 1, characterized in that: The light filter film comprises a plurality of material layers stacked in layers; The material of any of the material layers and the thickness of any of the material layers are determined based on a response curve of the photovoltaic panel.

8. The photovoltaic energy collection unit according to claim 1, characterized in that: Also includes: A bracket, the bracket comprising a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are fixed at a preset angle; The panel structure is connected to the first rotating shaft.

9. The photovoltaic energy collection unit according to claim 8, characterized in that: Also includes: A connecting member, the connecting member is sleeved on the periphery of the first rotating shaft, and the connecting member is fixedly connected to the second rotating shaft; Along the axial direction of the first rotating shaft, a portion of the first rotating shaft located on one side of the connecting member is a first fixing portion of the first rotating shaft, and a portion of the first rotating shaft located on the other side of the connecting member is a second fixing portion of the first rotating shaft; The photovoltaic energy collection unit has two panel structures, and the two panel structures are respectively connected to the first fixing part and the second fixing part of the first rotating shaft.

10. The photovoltaic energy collection unit according to claim 8, characterized in that: The first rotating axis and the second rotating axis are perpendicular to each other.

11. The photovoltaic energy collection unit according to claim 8, characterized in that: Also includes: a first motor, the first motor being adapted to drive the panel structure to move around the first rotation axis; The second motor is suitable for driving the first rotating shaft to move around the second rotating shaft.

12. The photovoltaic energy collection unit according to claim 11, characterized in that: Also includes: A controller is connected to the first motor and the second motor, and a photovoltaic algorithm and a photothermal algorithm are arranged in the controller.

13. A photovoltaic power generation system, characterized in that: include: Thermal tower; A plurality of photovoltaic energy collection units are distributed around the thermal collector tower, and the photovoltaic energy collection units are as described in any one of claims 1 to 12.

14. The photovoltaic power generation system according to claim 13, characterized in that: Also includes: A control module, wherein the control module is configured to control the photovoltaic energy collection unit to enter a photovoltaic mode, wherein, when entering the photovoltaic mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photovoltaic angle to the sun to obtain maximum photovoltaic efficiency; the control module is also configured to control the photovoltaic energy collection unit to enter a photothermal mode, wherein, when entering the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photothermal angle to the sun to reflect sunlight to a collector tower.

15. The photovoltaic power generation system according to claim 14, characterized in that: The control module comprises: a screening unit configured to determine a photovoltaic energy collection unit to enter a photovoltaic mode; a scheduling unit, wherein the scheduling unit is configured to generate a scheduling signal; The control module controls the photovoltaic energy collection unit to enter a photovoltaic mode according to the scheduling signal; the control module also controls the photovoltaic energy collection unit to enter a photothermal mode according to the scheduling signal.

16. The photovoltaic power generation system according to claim 15, characterized in that: The screening unit comprises: A judger configured to judge whether a panel temperature of the photovoltaic energy collection unit is higher than a preset photovoltaic warning value; A photovoltaic determiner, when the determiner determines that the panel temperature of the photovoltaic energy collection unit is not higher than the photovoltaic warning value, the photovoltaic determiner is configured to determine that the photovoltaic energy collection unit enters a photovoltaic mode.

17. The photovoltaic power generation system according to claim 16, characterized in that: The screening unit further includes: a photothermal determiner, and when the determiner determines that the panel temperature of the photovoltaic energy collection unit is higher than the photovoltaic warning value, the photothermal determiner is configured to determine that the photovoltaic energy collection unit enters a photothermal mode.

18. The photovoltaic power generation system according to claim 15, characterized in that: The screening unit comprises: A judger configured to judge whether the air temperature is higher than a preset photovoltaic warning value; A photovoltaic determiner, when the determiner determines that the air temperature is not higher than the photovoltaic warning value, the photovoltaic determiner is configured to determine that all photovoltaic energy collection units enter a photovoltaic mode.

19. The photovoltaic power generation system according to claim 18, characterized in that: When the determiner determines that the air temperature is higher than the photovoltaic warning value, the photovoltaic determiner is configured to determine the photovoltaic energy collection unit that enters the photovoltaic mode according to the position of each photovoltaic energy collection unit.

20. The photovoltaic power generation system according to claim 18, characterized in that: The screening unit further includes: a photothermal determiner configured to determine the photovoltaic energy collection unit entering the photothermal mode based on the photovoltaic energy collection unit determined to enter the photovoltaic mode.

21. The photovoltaic power generation system according to claim 18, characterized in that: The determiner determines whether the temperature is higher than the photovoltaic warning value according to the time and date.

22. A scheduling method for a photovoltaic power generation system, characterized in that: The photovoltaic power generation system comprises: a heat collection tower; a plurality of photovoltaic energy collection units, wherein the plurality of photovoltaic energy collection units are distributed around the heat collection tower, and the photovoltaic energy collection units are as described in any one of claims 1 to 12; The scheduling method comprises: Controlling the photovoltaic energy collection unit to enter a photovoltaic mode, wherein when entering the photovoltaic mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photovoltaic angle with the sun to obtain maximum photovoltaic efficiency; The photovoltaic energy collection unit is controlled to enter a photothermal mode, wherein, when entering the photothermal mode, the photovoltaic panel of the photovoltaic energy collection unit is at a photothermal angle with the sun to reflect sunlight to a heat collection tower.

23. The scheduling method according to claim 22, characterized in that: Also includes: determining a photovoltaic energy collection unit to enter a photovoltaic mode; generating a scheduling signal; In the step of controlling the photovoltaic energy collection unit to enter the photovoltaic mode, the photovoltaic energy collection unit is controlled to enter the photovoltaic mode according to the scheduling signal; In the step of controlling the photovoltaic energy collection unit to enter the photothermal mode, the photovoltaic energy collection unit is controlled to enter the photothermal mode according to the scheduling signal.

24. The scheduling method according to claim 23, characterized in that: The steps of determining a photovoltaic energy collection unit to enter photovoltaic mode include: Determine whether the panel temperature of the photovoltaic energy collection unit is higher than a preset photovoltaic warning value; When the panel temperature of the photovoltaic energy collection unit is not higher than the photovoltaic warning value, it is determined that the photovoltaic energy collection unit enters the photovoltaic mode.

25. The scheduling method according to claim 24, characterized in that: The step of determining the photovoltaic energy collection unit to enter the photovoltaic mode also includes: When the panel temperature of the photovoltaic energy collection unit is higher than the photovoltaic warning value, it is determined that the photovoltaic energy collection unit enters the photothermal mode.

26. The scheduling method according to claim 23, characterized in that: The steps of determining a photovoltaic energy collection unit to enter photovoltaic mode include: Determine whether the temperature is higher than the preset photovoltaic warning value; When the air temperature is not higher than the photovoltaic warning value, all photovoltaic energy collection units are determined to enter the photovoltaic mode.

27. The scheduling method according to claim 26, characterized in that: The step of determining the photovoltaic energy collection unit to enter the photovoltaic mode also includes: When the air temperature is higher than the photovoltaic warning value, the photovoltaic energy collection unit that enters the photovoltaic mode is determined according to the position of each photovoltaic energy collection unit.

28. The scheduling method according to claim 26, characterized in that: The step of determining the photovoltaic energy collection unit to enter the photovoltaic mode also includes: Based on the photovoltaic energy collection units determined to enter the photovoltaic mode, the photovoltaic energy collection units to enter the photothermal mode are determined.

29. The scheduling method according to claim 26, characterized in that: The steps of determining whether the temperature is higher than the preset photovoltaic warning value include: According to the time and date, determine whether the temperature is higher than the photovoltaic warning value.

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