A solar photovoltaic power generation device for greenhouse

Abstract

The present invention provides a light receiving device for solar photovoltaic power generation in a greenhouse, comprising: a stacked telescopic frame, wherein a multi-section folding support frame is provided inside the stacked telescopic frame; one end of the multi-section folding support frame is pivotally connected to the stacked telescopic frame, and the other end is pivotally connected to a solar panel rotating assembly; the solar panel rotating assembly includes a solar panel and a rotating plate, and the solar panel is fixedly mounted on the upper surface of the rotating plate. The present invention also provides an adaptive solar photovoltaic power generation system for a greenhouse based on the light receiving device. The light receiving device and the photovoltaic power generation system of the present invention are highly adaptable and can improve the utilization rate of sunlight in a greenhouse under different solar illumination conditions.

Description

Technical Field

[0001] The invention relates to a photovoltaic power generation device, in particular to a solar photovoltaic power generation device suitable for a greenhouse. Background Art

[0002] Photovoltaic power generation is the process of converting light energy directly into electrical energy by using the photovoltaic effect of semiconductor interfaces. Greenhouses, also known as hothouses, can transmit light, keep warm or heat up, and are used to provide a greenhouse growth period for plants and increase yields in seasons or environments that are not suitable for plant growth. Therefore, when building and using greenhouses, the internal heating problem is a key issue that needs to be addressed.

[0003] In the prior art, considering the construction cost and environmental protection, electric heating is mainly used to ensure the temperature in greenhouses. At present, the cleanest and cheapest electricity comes from solar photovoltaic power generation. Therefore, people have developed some greenhouses that use solar photovoltaic power generation. However, the existing greenhouses of this type of solar photovoltaic power generation have certain limitations. The main reason is that most of the solar panels are of sloping roof or flat roof type. On the one hand, it is not convenient to inspect and maintain, and disassembly and replacement have also become problems; on the other hand, the greenhouse with this type of solar panel does not have a high utilization rate of sunlight, and cannot balance photovoltaic power generation and crop light requirements well. Therefore, in order to achieve a dynamic balance between these, it is necessary to provide a new solar panel suitable for greenhouses to improve its adaptability, so as to meet different needs under different conditions to the maximum extent and reduce manpower consumption. Summary of the invention

[0004] The purpose of the present invention is to provide a solar photovoltaic power generation device that can be used in a greenhouse, which has a high degree of adaptability and can improve the utilization rate of sunlight in the greenhouse under different solar illumination conditions.

[0005] The object of the present invention is achieved by the following technical solutions:

[0006] First, a light receiving device for solar photovoltaic power generation in a greenhouse is provided, comprising: a stacked telescopic frame, wherein a multi-section folding support frame is arranged inside the stacked telescopic frame; one end of the multi-section folding support frame is pivotally connected to the stacked telescopic frame, and the other end is pivotally connected to a solar panel rotating assembly; the solar panel rotating assembly comprises a solar cell panel and a rotating plate, and the solar cell panel is fixedly mounted on the upper surface of the rotating plate.

[0007] In the light receiving device of the present invention, the stacked telescopic frame can adjust the overall light receiving area of ​​the solar panel through a telescopic structure. Its material is not particularly limited and can be made of various existing rigid materials suitable for outdoor environments, such as a frame structure of steel material.

[0008] In the preferred light receiving device of the present invention, the stacked telescopic frame is composed of a number of frames of similar specifications stacked and connected, each frame has two side strips, each side strip is provided with a groove and a protrusion matching the shape of the groove along the length direction of the side strip; the two adjacent frames are slidably connected by the mutual engagement of the protrusion and the groove.

[0009] In the further preferred light-receiving device of the present invention, the stacked telescopic frame is a stacked telescopic arc frame, which is composed of a number of arc frames of similar specifications stacked and connected, each arc frame has two arc side strips, and each arc side strip is provided with an arc groove and an arc protrusion matching the shape of the arc groove along the length direction of the side strip; the two adjacent arc frames are slidably connected by the mutual engagement of the arc protrusion and the arc groove.

[0010] In the light receiving device described in the present invention, the multi-section folding support frame is used to prop up the solar panel from the surface of the stacked telescopic arc frame to provide space for the rotation of the solar panel. The multi-section folding support frame can be a multi-section "single-arm" structure or a "double-arm" structure of the same specification. In a preferred embodiment, the multi-section folding support frame includes a pair of multi-section folding support arms, one end of the pair of support arms is respectively pivotally connected to the stacked telescopic arc frame, and the other end is respectively pivotally connected to the same transverse connecting rod; the transverse connecting rod is further rotatably connected to the rotating plate through a universal transmission mechanism.

[0011] In the light receiving device described in the present invention, the rotating plate is used to carry the solar cell panel, and can be driven by a motor to turn the solar cell panel to a suitable direction. In a preferred embodiment, the rotating plate further includes a rotating frame and a rotating body pivotally connected to the rotating frame; the rotating frame and the multi-section foldable support frame are rotatably connected through a universal transmission mechanism, and a relative angle can be further generated between the rotating body and the rotating frame under the drive of the motor.

[0012] In the light receiving device of the present invention, the solar cell panel is used to receive solar radiation, and then convert solar energy into electrical energy for supplying the greenhouse with temperature control; its material is not particularly limited. In the preferred embodiment of the present invention, the solar cell panel is a flexible solar cell panel, which helps to improve the convenience of maintenance, replacement and cleaning.

[0013] On this basis, the present invention also provides an adaptive solar photovoltaic power generation system for greenhouses, comprising: the solar photovoltaic power generation light receiving device, control system and drive system described in the present invention; the drive system is used to drive the movement of each component in the light receiving device; the control system is used to send the calculated motion parameters as instructions to the drive system.

[0014] In the preferred adaptive solar photovoltaic power generation system of the present invention, the control system includes a controller, an auxiliary circuit, a detection current and angular velocity sensor, etc.; the drive system includes a plurality of DC servo motors and a servo motor machine driver; the positions of the plurality of servo motors can be flexibly installed according to customer requirements. The controller is embedded with a computer program for determining the motion parameters of the drive system, which can calculate the motion parameters required to be executed by each motor in the drive system according to the data of the angular velocity sensor, actual needs and a predetermined algorithm, and issue instructions to the drive system by wired or wireless means, thereby completing the adjustment of the entire photovoltaic power generation device.

[0015] In actual application of the adaptive solar photovoltaic power generation system of the present invention, the telescopic overall frame of the photovoltaic greenhouse is first installed, and then the modular installation, that is, the layered installation of the solar photovoltaic device, is performed. Since the overall frame of the greenhouse is telescopic, the difficulty and complexity of installing the photovoltaic device are greatly reduced.

[0016] The current existing photovoltaic greenhouse technology is that the photovoltaic solar panel is fixed on one side of the greenhouse or fixed in a certain position, which not only limits the lighting of the greenhouse but also limits the solar illumination time, greatly limiting the efficiency of solar power generation. Compared with the prior art, the solar photovoltaic power generation system of the present invention can flexibly, efficiently and accurately adjust the light receiving area by setting a multi-level combination, telescopic, folding, and rotating structure in the light receiving device, so as to well balance the photovoltaic power generation and the light demand of crops in the greenhouse, and can significantly improve the utilization rate of solar energy. The specific beneficial effects are mainly reflected in the following aspects:

[0017] 1. The solar photovoltaic power generation device of the present invention, under the program control of the control system, enables the solar panels to receive the maximum amount of light for most of the day through the unfolding of the stacked telescopic arc frame structure, thereby ensuring power supply.

[0018] 2. The solar photovoltaic power generation device of the present invention is not an integrated structure as a whole, but a modular structure that can be disassembled and combined, and the solar panels installed on the device are also independently operated. Each solar panel can freely change its position to a certain extent according to the program according to the current environment, settings and needs, and the adjustment range is greatly widened, and the adaptability is enhanced. The design of the rotating structure enables it to be unfolded twice, and the rotation angle also has a considerable degree of freedom, which can receive light more conveniently and at multiple angles, and can also be manually adjusted so that the crops in the greenhouse can receive better light.

[0019] 3. The retractable frame structure of the solar photovoltaic power generation device of the present invention also greatly reduces the difficulty of maintenance and preparation, and the flexible solar panels can be freely replaced and cleaned, which is very convenient. It can be easily stored under control, which is convenient for maintenance and preparation, and replacement.

[0020] 4. In the solar photovoltaic power generation device of the present invention, the rotating structure is equipped with a low-power servo motor, which does not consume electricity when not turned on, and consumes very little electricity when turned on. Through program control, the solar panel can be moved and flipped at multiple angles, so that the utilization rate of solar energy is increased. It can also be manually controlled to provide sufficient light for greenhouse plants such as fruits and vegetables, and has great flexibility. In the case of a flexible solar panel, the weight can be reduced under the premise of sufficient power supply, which can reduce the motor load and further reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the light receiving device in a specific implementation manner of the present invention.

[0022] Figure 2 It is a schematic diagram of the specific structure of the light receiving device A area in a specific implementation manner of the present invention.

[0023] The description of each reference numeral is as follows:

[0024] 1 is a stacked telescopic steel frame, 11 is an arc-shaped steel frame, 2 is a multi-section folding support frame, 21 is a multi-section folding support arm, 22 is a transverse connecting rod, 23 is a universal transmission mechanism, 3 is a rotating plate, 31 is a rotating frame, 32 is a rotating body, 4 is an arch bracket, 5 is a horizontal frame, 6 is a slider, and 0 is a slide groove. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] The invention provides an adaptive solar photovoltaic power generation system for a greenhouse, which consists of a light receiving device, a control system and a driving system.

[0029] The light receiving device has an overall structure as follows Figure 1 As shown, the light receiving device frame is composed of an arched support 4 with a slide groove and a horizontal frame 5 at the bottom. The light receiving device frame can be installed as a whole on the outer surface of the light-transmitting curved glass ceiling of the agricultural greenhouse. In the light receiving device frame, along the slide groove 0 on the inner side of the arched support 4, multiple groups of stacked telescopic steel frames 1 are slidably installed through sliders 6. Each group of stacked telescopic steel frames 1 is composed of a number of arc-shaped steel frames 11 of similar specifications that are stacked and inserted with each other. The arc-shaped steel frames 11 can slide through the inserted slide grooves 0. Sliders 6 are provided on both sides of each arc-shaped steel frame 11 for sliding in the slide grooves 0 of the arched support 4 on both sides. Figure 1 The light receiving device in the embodiment is equipped with two groups of stacked telescopic steel frames 1, one on the left is a group of contracted stacked telescopic steel frames 1, and the other on the right is a group of stretched stacked telescopic steel frames 1. The stacked telescopic steel frame 1 on the right is equipped with a solar cell panel in its A region using a multi-section folding support frame 2.

[0030] like Figure 2 As shown, each arc-shaped steel frame 11 has two arc-shaped side strips, and each arc-shaped side strip is provided with an arc-shaped groove and an arc-shaped protrusion matching the shape of the arc-shaped groove along the length direction of the side strip; the two adjacent arc-shaped steel frames are slidably connected by the mutual engagement of the arc-shaped protrusion and the arc-shaped groove. Figure 2As shown, each arc-shaped steel frame 11 is provided with a set of multi-section folding support frames 2 inside; the multi-section folding support frames 2 are "double-arm structures", including a pair of multi-section folding support arms 21, one end of the pair of support arms is respectively pivoted to the stacked telescopic arc-shaped steel frame 1, and the other end is respectively pivoted to the same transverse connecting rod 22. The rotating plate 3 includes a rotating frame 31 and a rotating body 32 pivoted to the rotating frame 31; the rotating frame 31 and the transverse connecting rod 22 of the multi-section folding support frame are rotatably connected through a universal transmission mechanism 23, and the rotating body 32 is pivoted to the rotating frame 31, and can further generate a relative angle under the drive of the motor. A flexible solar cell panel is fixedly installed on the upper surface of the rotating body 32.

[0031] The driving system is used to drive the movement of each component in the light receiving device.

[0032] The control system is used to send the calculated motion parameters as instructions to the drive system.

[0033] The control system includes a controller, an auxiliary circuit, a detection current and angular velocity sensor, etc.; the drive system includes a number of DC servo motors and servo motor machine drivers; the positions of the servo motors can be flexibly installed according to customer requirements. The controller is embedded with a computer program for determining the motion parameters of the drive system, which can calculate the motion parameters required to be executed by each motor in the drive system according to actual needs and established algorithms, and issue instructions to the drive system through wired or wireless means, thereby completing the adjustment of the entire photovoltaic power generation device.

[0034] In actual use, the retractable overall frame of the photovoltaic greenhouse is installed first, and then the modular installation, that is, the layered installation of the solar photovoltaic device, is carried out. Since the overall frame of the greenhouse is retractable, the difficulty and complexity of installing the photovoltaic device are greatly reduced.

Claims

1. A light receiving device for solar photovoltaic power generation in a greenhouse, comprising: A stacked telescopic frame, wherein a multi-section folding support frame is provided inside the stacked telescopic frame; one end of the multi-section folding support frame is pivotally connected to the stacked telescopic frame, and the other end is pivotally connected to the solar panel rotating assembly; the multi-section folding support frame includes a pair of multi-section folding support arms, one end of the pair of support arms is respectively pivotally connected to the stacked telescopic arc frame, and the other end is respectively pivotally connected to the same transverse connecting rod; the transverse connecting rod is further connected to the rotating plate through a universal transmission mechanism to form a rotation connection; the solar panel rotating assembly includes a solar panel and a rotating plate, and the solar panel is fixedly installed on the upper surface of the rotating plate; the rotating plate is further It includes a rotating frame and a rotating body pivotally connected to the rotating frame; the rotating frame and the multi-section folding support frame are rotatably connected through a universal transmission mechanism, and a relative angle can be further generated between the rotating body and the rotating frame driven by a motor; the stacked telescopic frame is a stacked telescopic arc frame, which is composed of a plurality of arc frames of similar specifications stacked and connected, each arc frame having two arc side strips, and each arc side strip is provided with an arc groove and an arc protrusion matching the shape of the arc groove along the length direction of the side strip; two adjacent arc frames are slidably connected by the mutual engagement of the arc protrusion and the arc groove.

2. The light receiving device according to claim 1, characterized in that: The multi-section foldable support frame is a multi-section "single-arm" structure.

3. The light receiving device according to claim 1, characterized in that: The multi-section foldable support frame is a "double-arm" structure of the same specifications.

4. The light receiving device according to any one of claims 1 to 3, characterized in that: The solar cell panel is a flexible solar cell panel.

5. An adaptive solar photovoltaic power generation system for a greenhouse, comprising: The solar photovoltaic power generation light receiving device, control system and drive system as described in any one of claims 1-4; the drive system is used to drive the movement of each component in the light receiving device; the control system is used to send the calculated motion parameters as instructions to the drive system.

6. The system of claim 5, characterized in that: The control system includes a controller, an auxiliary circuit, a detection current and an angular velocity sensor; the drive system includes a plurality of DC servo motors and a servo motor machine driver; the controller is embedded with a computer program for determining the motion parameters of the drive system, and the motion parameters required to be executed by each motor in the drive system are calculated according to the data of the angular velocity sensor, actual needs and a predetermined algorithm, and instructions are issued to the drive system via wired or wireless means, thereby completing the adjustment of the entire solar photovoltaic power generation light receiving device.

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