Heliostat apparatus and power generation system

Abstract

This utility model discloses a heliostat device and a power generation system. The heliostat device includes: a support frame; a reflector movably mounted on the support frame, the reflector being used to reflect light towards a heat-absorbing tower; a tracking drive mechanism mounted on the support frame and connected to the reflector for driving the reflector to move relative to the support frame to follow the light; and a power supply device including: a photovoltaic power generation module mounted on the support frame, the photovoltaic power generation module being electrically connected to the tracking drive mechanism, the photovoltaic power generation module generating electricity to supply power to the tracking drive mechanism. This utility model's heliostat device, by using a photovoltaic power generation module mounted on the support frame for power generation, avoids the need for additional power supply equipment, reduces reliance on external power supply and wiring, and helps to lower the maintenance costs of the heliostat device.

Description

Technical Field

[0001] This application relates to the field of power generation equipment, and in particular to a heliostat device and power generation system. Background Technology

[0002] Deserts or high-altitude regions have abundant sunshine resources and high annual solar radiation intensity, but harsh climate conditions are often accompanied by strong winds, sandstorms, and extreme temperature differences. Tower solar thermal power plants use numerous heliostats to reflect sunlight onto the receiver at the top of the central receiver tower, heating the working fluid (such as molten salt or heat transfer oil) to drive a steam turbine for power generation or direct heating. Traditional heliostat systems rely on an external power grid for power and control signals, requiring the laying of numerous cables to connect each heliostat to the main control system.

[0003] However, in vast deserts or high-altitude areas, cable laying is costly, and long-term exposure to harsh environments can easily lead to line aging, short circuits, or power outages, making maintenance extremely difficult. Furthermore, cable laying requires significant manpower and resources and is easily limited by terrain, making flexible deployment difficult. Utility Model Content

[0004] This application proposes a heliostat device and power generation system. By setting a photovoltaic power generation module on the support frame for power generation, it avoids the need for additional power supply equipment, reduces dependence on external power supply and wiring, and helps to reduce the maintenance cost of the heliostat device.

[0005] In a first aspect, this application provides a heliostat device, comprising: a support frame; a reflector movably disposed on the support frame, the reflector being used to reflect light toward a heat-absorbing tower; a tracking drive mechanism disposed on the support frame and drivenly connected to the reflector to drive the reflector to move relative to the support frame to follow the light; and a power supply device, comprising: a photovoltaic power generation module disposed on the support frame, the photovoltaic power generation module being electrically connected to the tracking drive mechanism, the photovoltaic power generation module being used to generate electricity to supply power to the tracking drive mechanism.

[0006] This utility model's heliostat device achieves energy self-sufficiency by integrating a photovoltaic power generation module, completely eliminating the power and signal cables connected to the main control system in traditional heliostat systems, significantly reducing engineering wiring costs. The cable-free structure avoids problems such as line aging, open circuits, or short circuits caused by strong winds, dust storms, and extreme temperature differences, significantly improving the long-term reliability of the system. Without the need to consider cable route planning and laying conditions, it can be quickly and flexibly deployed in complex terrains, suitable for vast deserts or high-altitude uninhabited areas. Utilizing solar power to drive its own tracking system on-site forms a "light-electricity-power-light" closed loop, aligning with the green energy attributes of solar thermal power plants and contributing to improved overall energy efficiency.

[0007] In some embodiments, the photovoltaic power generation module is driven by the tracking drive mechanism, and the photovoltaic power generation module is adapted to move under the drive of the tracking drive mechanism to follow the light.

[0008] According to some embodiments of the present invention, the support frame includes: a support column adapted to be supported on the ground, and the tracking drive mechanism movably disposed on the support column; a first fixed frame connected to the tracking drive mechanism, and the reflector disposed on the first fixed frame; and a second fixed frame connected to the tracking drive mechanism, and the photovoltaic power generation module disposed on the second fixed frame.

[0009] In some embodiments, the photovoltaic power generation module includes at least one photovoltaic panel disposed around the periphery of the reflector.

[0010] According to some embodiments of the present invention, the projection of the photovoltaic power generation module in the reference plane surrounds the periphery of the projection of the reflector in the reference plane, and the reference plane is parallel to one side surface of the reflector along its own thickness direction.

[0011] In some embodiments, there is a height difference between the photovoltaic power generation module and the reflector along a direction perpendicular to the reflector.

[0012] In some embodiments, the power supply device further includes an energy storage module, which is electrically connected to the photovoltaic power generation module and the tracking drive mechanism, respectively, and is used to store the electrical energy generated by the photovoltaic power generation module and supply energy to the tracking drive mechanism.

[0013] In some embodiments, the heliostat apparatus further includes a control device, the control device comprising: a signal receiving unit for receiving a mirror position control command; and a control unit configured to control the operating state of the tracking drive mechanism according to the mirror position control command.

[0014] According to some embodiments of the present invention, the reflector includes: a substrate, a reflective layer, and a protective layer, wherein the substrate is a glass component, at least a portion of the substrate is bent, the substrate has a convex surface, the reflective layer is disposed on the convex surface, and the protective layer covers the reflective layer.

[0015] Secondly, embodiments of this application provide a power generation system, including: a heat-absorbing tower, including a tower body and a heat absorber disposed on the tower body; and the aforementioned heliostat device, wherein the reflector of the heliostat device is used to reflect light toward the heat absorber, and the heliostat device comprises multiple heliostat devices arranged in an array.

[0016] The power generation system of this invention uses the aforementioned heliostat device. By integrating a photovoltaic power generation module and a tracking drive mechanism, the photovoltaic power generation module generates electricity synchronously during the adjustment of the reflector angle, providing a continuous power supply to the tracking drive mechanism and the signal receiving controller, thereby eliminating the need for the main power grid and external cables.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 This is a partial structural schematic diagram of the power generation system according to an embodiment of the present utility model;

[0020] Figure 2 This is one of the structural schematic diagrams of the heliostat device according to an embodiment of this utility model;

[0021] Figure 3 This is the second schematic diagram of the heliostat device according to an embodiment of the present invention.

[0022] Figure label:

[0023] 100-Heliostat apparatus;

[0024] 110 - Support frame; 111 - Support column; 112 - First fixing frame; 113 - Second fixing frame;

[0025] 120-Reflector;

[0026] 130 - Tracking drive mechanism;

[0027] 140 - Power supply unit; 141 - Photovoltaic power generation module;

[0028] 150 - Energy storage module;

[0029] 160 - Control device;

[0030] 200-Power generation system;

[0031] 210 - Heat absorption tower; 211 - Heat absorber.

[0032] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0034] Deserts or high-altitude regions have abundant sunshine resources and high annual solar radiation intensity, but harsh climate conditions are often accompanied by strong winds, sandstorms, and extreme temperature differences. Tower solar thermal power plants use numerous heliostats to reflect sunlight onto the receiver at the top of the central receiver tower, heating the working fluid (such as molten salt or heat transfer oil) to drive a steam turbine for power generation or direct heating. Traditional heliostat systems rely on an external power grid for power and control signals, requiring the laying of numerous cables to connect each heliostat to the main control system.

[0035] However, in vast deserts or high-altitude areas, cable laying is costly, and long-term exposure to harsh environments can easily lead to line aging, short circuits, or power outages, making maintenance extremely difficult. Furthermore, cable laying requires significant manpower and resources and is easily limited by terrain, making flexible deployment difficult.

[0036] In view of this, this application proposes a heliostat device and power generation system, which uses photovoltaic power generation modules installed on the support frame to generate electricity, avoiding the need for additional power supply equipment, reducing dependence on external power supply and wiring, and helping to reduce the maintenance cost of the heliostat device.

[0037] refer to Figure 2 and Figure 3 In a first aspect, this application provides a heliostat device 100, which includes a support frame 110, a reflector 120, a tracking drive mechanism 130, and a power supply device 140.

[0038] The support frame 110 is fixed to the ground or base, providing rigid support to resist mechanical stress caused by strong winds, sandstorms, and temperature changes. As the structural foundation of the entire heliostat device 100, the support frame 110 supports the reflector 120, the tracking drive mechanism 130, and the photovoltaic power generation module 141, ensuring stable installation and operation of each component in harsh environments. The support frame 110 helps improve the overall structural stability of the heliostat device 100, adapting it to complex terrain and extreme climatic conditions in deserts or high-altitude areas.

[0039] The reflector 120 is movably mounted on the support frame 110. The reflector 120 is used to reflect light to the heat absorption tower 210. The movement of the reflector 120 usually includes rotational movement around the azimuth axis (horizontal axis) and / or the elevation axis (vertical axis) to achieve real-time tracking of the two-dimensional trajectory of the sun in the sky. Through high-precision optical tracking, the photothermal conversion efficiency is improved, and the energy input stability of the tower solar thermal power plant is ensured.

[0040] A tracking drive mechanism 130 is mounted on the support frame 110 and is connected to the reflector 120 via a transmission connection. This mechanism drives the reflector 120 to move relative to the support frame 110 to track light rays. For example, the tracking drive mechanism 130 can be connected to the reflector 120 via a motor, reducer, or rotating shaft. It adjusts the azimuth and elevation angles of the reflector 120 according to a preset algorithm or external control signal, ensuring it always faces the sun. This ensures that the reflector 120 efficiently tracks the sun's trajectory all day long, maximizing light energy collection efficiency. It also lays the foundation for subsequent integration of local intelligent control.

[0041] Specifically, the tracking drive mechanism 130 can calculate the azimuth and elevation angles of the sun in the horizontal coordinate system in real time based on astronomical algorithms (such as solar declination angle, hour angle, etc.) using a built-in or external control unit (such as a microcontroller, timer, or photosensitive sensor array); or it can detect the direction of solar incidence through a photosensitive element and generate a deviation signal. The control unit sends a control signal to the drive motor (such as a stepper motor or servo motor) in the tracking drive mechanism 130 based on the calculation results or sensor feedback. The drive motor then drives the reflector 120 to rotate around the corresponding axis on the support frame 110 via a reduction transmission mechanism (such as a gear set, worm gear, or linkage mechanism). Under drive, the reflector 120 adjusts its normal direction so that its incident surface always maintains a specific geometric relationship with the sunlight (usually the mirror normal bisects the angle between the incident sunlight and the reflected light pointing towards the heat absorber tower 210), thereby ensuring that the reflected light spot is continuously and stably focused on the receiving surface of the heat absorber 211 at the top of the heat absorber tower 210.

[0042] The power supply unit 140 includes a photovoltaic power generation module 141, which is mounted on a support frame 110. The photovoltaic power generation module 141 is electrically connected to the tracking drive mechanism 130 and generates electricity to supply power to the tracking drive mechanism 130. The photovoltaic power generation module 141 is directly mounted on the support frame 110 (e.g., integrated into the back of the reflector 120 or the top of the bracket), utilizing abundant local solar radiation resources to convert light energy into electrical energy, which is then directly supplied to the tracking drive mechanism 130 via wires. This provides the tracking drive mechanism 130 with an independent and reliable power source, eliminating dependence on an external power grid.

[0043] The heliostat device 100 of this invention achieves energy self-sufficiency through the integration of a photovoltaic power generation module 141, completely eliminating the power and signal cables connected to the main control system in traditional heliostat systems, significantly reducing engineering wiring costs. The cable-free structure avoids problems such as line aging, open circuits, or short circuits caused by strong winds, sandstorms, and extreme temperature differences, significantly improving the long-term reliability of the system. Without the need to consider cable route planning and laying conditions, it can be quickly and flexibly deployed in complex terrains, suitable for vast deserts or high-altitude uninhabited areas. Utilizing solar power to drive its own tracking system on-site forms a "light-electricity-power-light" closed loop, aligning with the green energy attributes of solar thermal power plants and contributing to improved overall energy efficiency.

[0044] In some embodiments, the photovoltaic power generation module 141 is driven by the tracking drive mechanism 130, and the photovoltaic power generation module 141 is adapted to move under the drive of the tracking drive mechanism 130 to follow the light. That is, the photovoltaic power generation module 141 forms a transmission connection with the tracking drive mechanism 130 through a mechanical connection (such as a shared rotating shaft, a linkage bracket, or integration into the back plate of the reflector 120). During the operation of the tracking drive mechanism 130, the photovoltaic power generation module 141 adjusts its spatial orientation synchronously with the reflector 120 or according to a preset ratio, so that its light-receiving surface always faces the direction of solar incidence, maintaining a near-vertical incident angle, thereby maximizing the photoelectric conversion efficiency.

[0045] This helps increase the average daily power generation per unit area of ​​photovoltaic modules, especially in the early morning, evening, or when the solar altitude angle is low in high latitude / high altitude regions, where the advantages are more pronounced. It ensures that the photovoltaic power generation module 141 can still provide stable and sufficient power to the tracking drive mechanism 130 under conditions of fluctuating light intensity or seasonal changes, enhancing the system's self-sufficiency.

[0046] The transmission cooperation between the photovoltaic power generation module 141 and the tracking drive mechanism 130 can be as follows: the reflector 120 and the photovoltaic power generation module 141 are mounted on the same rotating axis to achieve completely synchronous movement; or, the tracking drive mechanism 130 transmits part of the motion to the photovoltaic module through a linkage, gear set or flexible transmission belt to achieve angular coupling; or, the tracking drive mechanism 130 can have multi-degree-of-freedom driving capability (such as parallel robots, serial robotic arms or hybrid drive mechanisms, etc.), and can independently or collaboratively adjust the angle of the two (reflector and photovoltaic power generation module 141) according to the control strategy.

[0047] In this way, by dynamically following the sun, the output power of the photovoltaic power generation module 141 is more stable and the peak value is higher, effectively ensuring the power demand of the tracking drive mechanism 130 during the full sunshine period (including the low irradiance period) and avoiding tracking failure due to insufficient power supply.

[0048] According to some embodiments of this utility model, the support frame 110 includes a support column 111, a first fixed frame 112, and a second fixed frame 113, suitable for support on the ground. The tracking drive mechanism 130 is movably mounted on the support column 111. The support column 111 is vertically fixed to the ground and serves as the main load-bearing component of the entire heliostat device 100. The tracking drive mechanism 130 (such as an azimuth rotation motor and an elevation drive assembly) is integrated and installed on its upper part or inside, providing a rotation reference axis and installation interface for the movement of the reflector 120 and the photovoltaic power generation module 141. The support column 111 provides a high-rigidity, wind-resistant central support, adapting to the strong wind environment of the desert.

[0049] The first mounting bracket 112 is connected to the tracking drive mechanism 130. The reflector 120 is mounted on the first mounting bracket 112. Exemplarily, the first mounting bracket 112 is directly connected to the output end (such as an elevation shaft) of the tracking drive mechanism 130 for rigid mounting of the reflector 120. Driven by the tracking drive mechanism 130, the first mounting bracket 112 drives the reflector 120 to rotate around one or more axes on the support column 111, thereby achieving optical tracking of the sun.

[0050] The second mounting bracket 113 is connected to the tracking drive mechanism 130, and the photovoltaic power generation module 141 is mounted on the second mounting bracket 113. Exemplarily, the second mounting bracket 113 can also be connected to the tracking drive mechanism 130 (e.g., sharing the same drive shaft as the first mounting bracket 112, or controlled by the same drive source via a linkage mechanism) for mounting the photovoltaic power generation module 141. When the tracking drive mechanism 130 is running, the second mounting bracket 113 drives the photovoltaic power generation module 141 to adjust its angle synchronously or according to a set relationship, so that it follows the sunlight.

[0051] Thus, the support frame 110 adopts a "support column 111 + double fixed frame" layout, integrating the reflector 120 and the photovoltaic power generation module 141 onto the same drive platform, avoiding spatial conflicts and resource waste caused by multiple support systems. The first fixed frame 112 and the second fixed frame 113 are both driven by the same tracking drive mechanism 130, ensuring that their motion logic is consistent, simplifying the control algorithm, and improving the system synchronization accuracy.

[0052] The modular frame design facilitates on-site assembly, debugging, and subsequent replacement of the reflector 120 or photovoltaic modules, making it particularly suitable for rapid deployment in remote areas.

[0053] In some embodiments, the photovoltaic power generation module 141 includes at least one photovoltaic panel. For example, the photovoltaic power generation module 141 may include one photovoltaic panel, or the photovoltaic power generation module 141 may also include multiple photovoltaic panels, which are disposed around the periphery of the reflector 120.

[0054] The photovoltaic panels, serving as the basic power generation units of the photovoltaic power generation module 141, are arranged in the peripheral area of ​​the reflector 120 (e.g., the outer edge of the reflector 120, the outer edge of the back, or the area surrounding the support). This arrangement avoids the effective reflective surface of the reflector 120 while placing them in a position to receive direct sunlight. As the tracking drive mechanism 130 drives the entire device to follow the sun, the peripherally arranged photovoltaic panels move synchronously with the reflector 120, continuously exposed to sunlight, achieving efficient photoelectric conversion and supplying power to the tracking drive mechanism 130.

[0055] By fully utilizing the unused area around reflector 120 to install photovoltaic panels, no additional land area is required, making it particularly suitable for concentrated solar power plants with limited land resources or requiring high-density deployment. The photovoltaic panels are located "around" the reflector 120 rather than on its front or in the path of shading, ensuring that they do not block incident sunlight or reflect light paths, thus guaranteeing the energy reception efficiency of the absorber 211.

[0056] According to some embodiments of the present invention, the projection of the photovoltaic power generation module 141 in the reference plane surrounds the periphery of the projection of the reflector 120 in the reference plane, and the reference plane is parallel to one side surface of the reflector 120 along its own thickness direction.

[0057] The reference plane is an imaginary plane parallel to one side surface (usually the back or mounting surface) of the reflector 120 along its thickness direction, used to uniformly characterize the relative spatial position of the reflector 120 and the photovoltaic module 141. Orthogonal projections of the reflector 120 and the photovoltaic module 141 onto this reference plane can visually reflect their layout and coverage relationship on the horizontal or mounting plane.

[0058] The orthographic projection of the photovoltaic power generation module 141 (including at least one photovoltaic panel) onto the reference plane is located entirely around the projection of the reflector 120, forming a partial or complete surrounding shape (such as a U-shape, C-shape, or closed ring), but does not cover the projection area of ​​the reflector 120 itself. This arrangement ensures that, under any tracking posture, the photovoltaic module will not block the effective sunlight incident on the reflector 120, nor will it obstruct the reflected light path.

[0059] In some embodiments, there is a height difference between the photovoltaic power generation module 141 and the reflector 120 along a direction perpendicular to the reflector 120.

[0060] Thus, the height difference design between the photovoltaic power generation module 141 and the reflector 120 helps to avoid the risk of component collisions under large-angle tracking conditions, extending the service life of the device, and is especially suitable for scenarios requiring large elevation angle adjustment in high-latitude regions. The height difference design actively avoids localized high-temperature areas or dust accumulation areas formed on the back of the reflector 120, maintaining the long-term power generation efficiency of the photovoltaic power generation module 141.

[0061] During the operation of the heliostat device 100, the reflector 120 and the photovoltaic power generation module 141 work together to follow the sun, but maintain a set height difference in the direction perpendicular to the mirror surface. This spatial separation ensures that there is no mechanical interference between the two during dynamic tracking, while allowing the photovoltaic module to be in a better light and heat environment, continuously and efficiently generating electricity to drive the tracking mechanism, thus achieving a unity of structural safety, functional synergy and energy efficiency optimization.

[0062] In some embodiments, the power supply device 140 further includes an energy storage module 150, which is electrically connected to the photovoltaic power generation module 141 and the tracking drive mechanism 130, respectively. The energy storage module 150 is used to store the electrical energy generated by the photovoltaic power generation module 141 and supply energy to the tracking drive mechanism 130.

[0063] The energy storage module 150 is electrically connected between the photovoltaic power generation module 141 and the tracking drive mechanism 130, forming an energy buffer and dispatch unit. During periods of sufficient sunlight, part of the electrical energy generated by the photovoltaic power generation module 141 directly drives the tracking drive mechanism 130, while the surplus electrical energy is charged into the energy storage module 150 (such as a lithium-ion battery, supercapacitor, or lithium iron phosphate battery pack). During periods of insufficient sunlight (such as cloud cover, early morning / dusk) or nighttime pre-positioning, the energy storage module 150 releases its stored electrical energy to continuously power the tracking drive mechanism 130, ensuring its reliable operation around the clock.

[0064] The energy storage module 150 can integrate power management circuits (such as charge / discharge control, overvoltage / overcurrent protection, and voltage regulation) to achieve efficient energy conversion and safe use.

[0065] The energy storage module 150 helps overcome the intermittent nature of photovoltaic power generation, enabling the tracking drive mechanism 130 to complete initial alignment, attitude fine-tuning, or fault recovery operations even under low-light or no-light conditions. It also helps absorb instantaneous fluctuations in photovoltaic output, providing stable voltage / current to the drive motor and improving the tracking accuracy and system stability of the tracking drive mechanism 130. Furthermore, it allows the heliostat device 100 to operate in low-power standby mode at night, automatically waking up and presetting the initial angle before sunrise, thus shortening the startup time of the power generation system 200.

[0066] In some embodiments, the heliostat device 100 further includes a control device 160, which includes a signal receiving unit and a control unit. The signal receiving unit is used to receive position control commands for the reflector 120, and the control unit is configured to control the operating state of the tracking drive mechanism 130 according to the position control commands for the reflector 120.

[0067] The signal receiving unit can be integrated locally into the heliostat device 100 (either inside the support frame 110 or in the control box) for wireless or wired reception of position control commands for the reflector 120 issued from the power plant's main control system or central dispatch platform. These commands may include information such as target azimuth, elevation, speed of movement, or calibration parameters. Communication can be achieved using wireless technologies (such as LoRa, ZigBee, NB-IoT, 4G / 5G) or, if necessary, via a simplified local bus, without relying on traditional long-distance power cables. This enables remote centralized control, supporting the coordinated scheduling of 200 pairs of thousands of heliostats in the power generation system.

[0068] The control unit is electrically connected to the signal receiving unit and forms a closed-loop control circuit with the tracking drive mechanism 130. Its built-in microprocessor or dedicated control chip is configured to parse the received position control commands, combine them with local sensor data (such as angle encoders, gyroscopes, etc., if present), and generate drive signals to be output to the motor drive circuit of the tracking drive mechanism 130, thereby precisely adjusting the attitude of the reflector 120. The control algorithm can be based on an astronomical model, feedback correction, or a hybrid strategy.

[0069] The heliostat device 100 receives the position control command of the reflector 120 from the main control system of the power station through the signal receiving unit. After the control unit parses the command, it drives the tracking drive mechanism 130 to adjust the attitude of the reflector 120 (and the synchronously moving photovoltaic power generation module 141) so that it is precisely aligned with the sun and reflects the light to the heat absorption tower 210. The entire control process is powered by the local power supply device 140 (photovoltaic + energy storage), without the need for external power supply or control cables, realizing the integrated operation mode of "wireless command issuance - local intelligent execution - autonomous energy supply".

[0070] According to some embodiments of this utility model, the reflector 120 includes a substrate, a reflective layer, and a protective layer. The substrate is made of glass (such as low-iron ultra-clear glass), and at least a portion of it is formed with a convex curvature through hot bending or cold bending processes, constituting the main structural body and optical reference surface of the reflector 120. This convex design can be spherical, cylindrical, or freeform, used to achieve specific beam divergence, focusing, or field-of-view expansion effects, and is particularly suitable for heliostat applications requiring increased effective receiving angles or compensation for tracking errors.

[0071] The reflective layer is disposed on the convex surface. For example, the reflective layer is formed on the convex surface of the substrate by means of vacuum sputtering, chemical silver plating, or aluminum film deposition. As the main light-reflecting functional layer, it efficiently reflects incident sunlight to the heat absorption tower 210. Its material is usually a high-reflectivity metal (such as silver or aluminum) or a dielectric film system to ensure high reflectivity in a wide spectral range (300nm–2500nm).

[0072] The protective layer covers the reflective layer and is made of weather-resistant materials (such as silicon dioxide, aluminum oxide, fluorocarbon resin or composite passivation film) to isolate water vapor, oxygen, sand and dust and salt spray corrosion, and prevent the reflective layer from oxidizing, sulfiding or wearing.

[0073] The reflector 120 uses a curved glass substrate as its support, with its convex surface serving as the optical working surface. A high-reflectivity reflective layer is provided on it, and it is sealed and covered by a weather-resistant protective layer. When sunlight is incident, it is directionally reflected by the convex reflective layer to the heat absorption tower 210. Its curved surface characteristics ensure the directionality of the main optical path while providing a certain angular tolerance. The entire structure maintains stable optical performance in harsh environments such as strong winds, sandstorms, and ultraviolet radiation, supporting the long-term and efficient operation of the heliostat device 100.

[0074] refer to Figure 1 Secondly, this application provides a power generation system 200, which includes a heat absorption tower 210 and the aforementioned heliostat device 100. The heat absorption tower 210 includes a tower body and a heat absorber 211 disposed on the tower body. The reflector 120 of the heliostat device 100 is used to reflect light to the heat absorber 211. The heliostat device 100 consists of multiple devices arranged in an array.

[0075] The power generation system 200 of this utility model uses the heliostat device 100 described above. By integrating the photovoltaic power generation module 141 and the tracking drive mechanism 130, the photovoltaic power generation module 141 generates electricity synchronously during the angle adjustment of the reflector 120, providing continuous power to the tracking drive mechanism 130 and the signal receiving controller, thereby eliminating the need for the main power grid and external cables.

[0076] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0077] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0078] In the description of this utility model, "multiple" means two or more.

[0079] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0080] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heliostat apparatus, characterized by, include: Support frame (110); A reflector (120) is movably mounted on the support frame (110), and the reflector (120) is used to reflect light toward the heat absorption tower (210); A tracking drive mechanism (130) is provided on the support frame (110) and is connected to the reflector (120) in a transmission manner to drive the reflector (120) to move relative to the support frame (110) to follow the light. Power supply device (140), including: A photovoltaic power generation module (141) is provided on the support frame (110). The photovoltaic power generation module (141) is electrically connected to the tracking drive mechanism (130). The photovoltaic power generation module (141) is used to generate electricity to supply power to the tracking drive mechanism (130).

2. The heliostat apparatus of claim 1, wherein, The photovoltaic power generation module (141) is driven by the tracking drive mechanism (130), and the photovoltaic power generation module (141) is adapted to move under the drive of the tracking drive mechanism (130) to follow the light.

3. The heliostat apparatus according to claim 2, characterized in that, The support frame (110) includes: A support column (111) is adapted to be supported on the ground, and the tracking drive mechanism (130) is movably disposed on the support column (111). The first fixed frame (112) is connected to the tracking drive mechanism (130), and the reflector (120) is disposed on the first fixed frame (112). The second fixed frame (113) is connected to the tracking drive mechanism (130), and the photovoltaic power generation module (141) is located on the second fixed frame (113).

4. The heliostat apparatus according to claim 1, characterized in that, The photovoltaic power generation module (141) includes at least one photovoltaic panel, which is disposed on the periphery of the reflector (120).

5. The heliostat apparatus according to claim 4, characterized in that, The projection of the photovoltaic power generation module (141) in the reference plane surrounds the periphery of the projection of the reflector (120) in the reference plane, and the reference plane is parallel to one side surface of the reflector (120) along its own thickness direction.

6. The heliostat apparatus according to claim 1, characterized in that, Along a direction perpendicular to the reflector (120), there is a height difference between the photovoltaic power generation module (141) and the reflector (120).

7. The heliostat apparatus according to claim 1, characterized in that, The power supply device (140) further includes an energy storage module (150), which is electrically connected to the photovoltaic power generation module (141) and the tracking drive mechanism (130) respectively. The energy storage module (150) is used to store the electrical energy generated by the photovoltaic power generation module (141) and supply energy to the tracking drive mechanism (130).

8. The heliostat apparatus according to claim 1, characterized in that, Also includes: Control device (160), the control device (160) comprising: The signal receiving unit is used to receive position control commands for the reflector (120); The control unit is configured to control the operating state of the tracking drive mechanism (130) according to the position control command of the reflector (120).

9. The heliostat apparatus according to claim 7, characterized in that, The reflector (120) includes: a substrate, a reflective layer, and a protective layer, wherein the substrate is a glass element, at least a portion of the substrate is curved, and the substrate has a convex surface. The reflective layer is disposed on the convex surface, and the protective layer covers the reflective layer.

10. A power generation system, characterized in that, include: A heat absorption tower (210) includes a tower body and a heat absorber (211) disposed on the tower body. The heliostat device (100) according to any one of claims 1-9, wherein the mirror (120) of the heliostat device (100) is used to reflect light toward the absorber (211), and the heliostat device (100) is a plurality of them arranged in an array.

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