Low-voltage photovoltaic grid-connected power generation equipment

Abstract

The utility model belongs to the technical field of photovoltaic power generation, and particularly relates to low-voltage grid-connected photovoltaic power generation equipment, which comprises a base, support guide columns are mounted at two ends of the base, an equipment box and a box top cover which are matched with each other are connected onto the support guide columns through guide slide blocks, and a top plate is mounted at the top ends of the support guide columns. An electric telescopic rod in driving connection with the box top cover is arranged at the bottom in the top plate, a sliding guide rail is installed on the top plate through an inclined support, an array photovoltaic panel is installed on the sliding guide rail in a fastened mode through a sliding installation buckle, and a photovoltaic controller and a photovoltaic grid-connected inverter electrically connected with the photovoltaic controller are installed at the bottom of the box top cover. According to the utility model, the equipment box is adopted to integrate a complete set of photovoltaic grid-connected power generation equipment, and the equipment box is slidably arranged on the support guide pillar across the air; workers can conveniently install and maintain the whole set of equipment, and the safety is improved; the array photovoltaic panel is arranged on the sliding guide rail through the first sliding installation buckle set, so that the array photovoltaic panel is convenient to disassemble and assemble. The maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic power generation, and particularly relates to a low-voltage photovoltaic grid-connected power generation device. Background Technique

[0002] After retrieval, Chinese Patent Publication No. CN108695894A discloses an environment-friendly low-voltage photovoltaic grid-connected power generation mechanism, which includes a photovoltaic panel. The photovoltaic panel is connected to a first DC power meter, the first DC power meter is connected to a controller, the controller is connected to a second DC power meter, the second DC power meter is connected to a storage battery, the controller is connected to a grid-connected inverter, and the grid-connected inverter is connected to a distribution box.

[0003] However, the following problems exist in the use of the above photovoltaic grid-connected power generation mechanism:

[0004] 1. Each photovoltaic panel is fixedly installed by screws, and the operation is cumbersome and inconvenient, bringing great trouble to the staff.

[0005] 2. Each photovoltaic device in the photovoltaic grid-connected power generation mechanism can only be installed separately, there is a risk of electric leakage and electric shock, and the requirement of facilitating overall installation, fixation and maintenance cannot be achieved. There are potential safety hazards during use, bringing danger to the staff.

[0006] There is an urgent need to design a portable supporting photovoltaic grid-connected power generation device to solve the above problems. Summary of the Invention

[0007] To solve the problems raised in the above background technique, the utility model provides a low-voltage photovoltaic grid-connected power generation device, which integrates a complete set of photovoltaic grid-connected power generation devices with an equipment box. The equipment box is slidably arranged on the support guide posts in the air, facilitating the installation and maintenance of the whole set of equipment by the staff and improving safety. The array of photovoltaic panels is arranged on the sliding guide rails in groups through sliding mounting buckles, which is convenient for disassembling and assembling the array of photovoltaic panels and facilitating maintenance.

[0008] To achieve the above object, the utility model provides the following technical solution: A low-voltage photovoltaic grid-connected power generation device, including a base, support guide posts are installed at both ends of the base, an equipment box and a box top cover that are mutually adapted are connected through a guide slider on the support guide posts, a top plate is installed at the top of the support guide posts, an electric telescopic rod for driving connection with the box top cover is arranged at the inner bottom of the top plate, a sliding guide rail is installed on the top plate through an inclined bracket, an array of photovoltaic panels is tightly installed on the sliding guide rail through a sliding mounting buckle, and a photovoltaic controller and a photovoltaic grid-connected inverter electrically connected to the photovoltaic controller are installed at the bottom of the box top cover.

[0009] As a preferred solution, the array photovoltaic panels are fastened to the sliding guide rails on both sides by a group of sliding mounting buckles, and the array photovoltaic panels are electrically connected to the photovoltaic controller through a first DC power meter arranged on the top of the box cover.

[0010] As a preferred solution, the equipment box is provided with a second DC power meter, and the photovoltaic controller is connected to the photovoltaic grid-connected inverter through the second DC power meter. A battery pack and a distribution box are also provided inside the equipment box, and the photovoltaic controller is connected to the battery pack, and the photovoltaic grid-connected inverter is connected to the distribution box.

[0011] As a preferred solution, heat dissipation cavities are provided in both sides of the equipment box, and heat dissipation fans and semiconductor refrigeration fins are provided in the heat dissipation cavities.

[0012] As a preferred solution, the box top cover is driven up and down by an electric telescopic rod to separate and merge with the equipment box.

[0013] As a preferred solution, a damping shock absorber connected to the equipment box is provided at the top center of the base, and a spring connected to the guide slider is sleeved on the bottom end of the support guide column.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model adopts an equipment box to integrate a complete set of photovoltaic grid-connected power generation equipment; the two ends of the equipment box slide on the support guide pillars through guide sliders to ensure that the equipment box is set in an airtight manner to prevent leakage and at the same time have a specific shock absorption effect; it is convenient for workers to install and maintain the whole set of equipment and improves safety.

[0016] 2. The array photovoltaic panels are arranged on the sliding guide rails in groups through sliding mounting buckles. The sliding mounting buckles are fastened to both sides of the array photovoltaic panels to facilitate the disassembly and assembly of the array photovoltaic panels.

[0017] 3. The photovoltaic controller is used to control the array photovoltaic panels to receive solar photovoltaic conversion and store it in the battery pack, and then use the photovoltaic grid-connected inverter to maximize the transmission of the converted electricity from the photovoltaic battery pack into the distribution box of the AC power grid or supply it to electrical appliances. This new photovoltaic grid-connected power generation equipment can be used as a supplement to conventional energy and is green and environmentally friendly. The grid-connected voltage is generally below 220V, with absolute safety and relative wide application. It also has a longer lifespan and is easy to maintain.

[0018] 4. The top cover of the box is driven up and down by an electric telescopic rod, and can be separated and merged with the equipment box; it is convenient for staff to install, disassemble and repair equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 Schematic front view structure of the present utility model;

[0021] Figure 3 is Figure 2 Isometric sectional view structure diagram of the A-A plane in

[0022] Figure 4 Schematic sectional view structure of the longitudinal section of the present utility model.

[0023] Explanation of the reference numerals in the drawings:

[0024] 1. Base; 2. Support guide post; 3. Equipment box; 4. Box top cover; 5. Top plate; 6. Inclined bracket; 7. Sliding guide rail; 8. Array of photovoltaic panels; 9. Photovoltaic controller; 10. Photovoltaic grid-connected inverter; 11. Distribution box; 12. Electric telescopic rod; 13. Damping shock absorber; 14. First DC power meter; 15. Battery pack; 21. Guide slider; 22. Spring; 31. Heat dissipation cavity; 32. Second DC power meter; 71. Sliding mounting buckle. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1

[0027] Please refer to Figures 1-4The utility model provides the following technical solutions: a low-voltage photovoltaic grid-connected power generation device, comprising a base 1, support guide columns 2 are installed at both ends of the base 1, and the support guide columns 2 are connected with a mutually adapted equipment box 3 and a box top cover 4 through a guide slider 21, a top plate 5 is installed on the top of the support guide column 2, and an electric telescopic rod 12 is provided at the bottom of the top plate 5 and is driven and connected to the box top cover 4, a sliding guide rail 7 is installed on the top plate 5 through an inclined bracket 6, and an array photovoltaic panel 8 is fastened to the sliding guide rail 7 through a sliding mounting buckle 71, and a photovoltaic controller 9 and a photovoltaic grid-connected inverter 10 electrically connected to the photovoltaic controller 9 are installed at the bottom of the box top cover 4; both sides of the array photovoltaic panel 8 are fastened to the sliding guide rail 7 through a group of sliding mounting buckles 71, and the array photovoltaic panel 8 is electrically connected to the photovoltaic controller 9 through a first DC power meter 14 arranged on the top of the box top cover 4; a second DC power meter 32 is provided on the equipment box 3, and the photovoltaic controller 9 is connected to the photovoltaic grid-connected inverter 10 through the second DC power meter 32. A battery pack 15 and a distribution box 11 are also provided inside the equipment box 3, and the photovoltaic controller 9 is connected to the battery pack 15, and the photovoltaic grid-connected inverter 10 is connected to the distribution box 11; in this embodiment, the two ends of the equipment box 3 are slid on the support guide column 2 through the guide slider 21 to ensure that the equipment box 3 is set in the air to prevent leakage and at the same time achieve a specific shock absorption effect; the box top cover 4 is driven up and down by the electric telescopic rod 12 to be separated and merged with the equipment box 3; it is convenient for the staff to install, disassemble and repair the equipment. The array photovoltaic panels 8 are arranged in groups on the sliding guide rails 7 through sliding mounting buckles 71, and the sliding mounting buckles 71 are tightly buckled on both sides of the array photovoltaic panels 8, so as to facilitate the disassembly and assembly of the array photovoltaic panels 8; when in use, the array photovoltaic panels 8 receive solar photovoltaic energy, and the photovoltaic controller 9 is used to control the photovoltaic conversion and storage in the battery pack 15, and then the maximum power tracking technology is adopted through the photovoltaic grid-connected inverter 10 to maximize the electric energy converted by the photovoltaic battery pack 15 to be sent to the distribution box 11 of the AC power grid or to be supplied to electrical appliances; this new photovoltaic grid-connected power generation equipment can be used as a supplement to conventional energy and a green and environmentally friendly resource; the grid-connected voltage is generally below 220V, with absolute safety and relative universality; it has a longer service life and is simple to maintain.

[0028] In this embodiment, heat dissipation cavities 31 are provided on both sides of the equipment box 3, and heat dissipation fans and semiconductor refrigeration plates are provided in the heat dissipation cavities 31; during the operation of the equipment box 3, the heat dissipation fans in the heat dissipation cavities 31 can be started to input the air cooled by the semiconductor refrigeration plates into the equipment box 3 to cool down the interior thereof.

[0029] In this embodiment, the box top cover 4 is driven to rise and fall by the electric telescopic rod 12, and is separated and merged with the equipment box 3, which facilitates the staff to install, disassemble and repair the equipment.

[0030] In this embodiment, a damping shock absorber 13 connected to the equipment box 3 is provided at the top center of the base 1, and a spring 22 connected to the guide slider 21 is provided on the bottom end of the support guide column 2; this ensures that the equipment box 3 is set in the air and does not contact the ground to prevent leakage, while achieving a shock absorption effect.

[0031] In addition, an insulating layer is provided outside the equipment box 3 and the box top cover 4.

[0032] The working principle and usage process of the present invention are as follows: During installation, the two ends of the equipment box 3 are slid onto the support guide columns 2 via guide sliders 21, and the bottom is connected to the base 1 via a damping shock absorber 13, ensuring that the equipment box 3 is set in the air and does not contact the ground, preventing leakage and achieving a shock-absorbing effect. The box top cover 4 is driven up and down by an electric telescopic rod 12, and can be separated and merged with the equipment box 3, making it convenient for staff to install, disassemble and repair the equipment. The array photovoltaic panels 8 are arranged in groups on the sliding guide rails 7 via sliding mounting buckles 71, and the sliding mounting buckles 71 are tightly fastened to the two sides of the array photovoltaic panels 8, making it convenient for the array photovoltaic panels 8 to be disassembled and assembled.

[0033] During use, the array photovoltaic panels 8 receive solar photovoltaic energy, and the photovoltaic controller 9 is used to control the conversion and storage of photovoltaic energy in the battery pack 15. The maximum power tracking technology is then adopted through the photovoltaic grid-connected inverter 10 to maximize the transmission of the electric energy converted by the photovoltaic battery pack 15 into the distribution box 11 of the AC power grid or to supply electrical appliances for use. This new photovoltaic grid-connected power generation equipment can be used as a supplement to conventional energy and is a green and environmentally friendly resource. The grid-connected voltage is generally below 220V, with absolute safety and relative wide application. It also has a longer service life and is easy to maintain.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A low-voltage photovoltaic grid-connected power generation device, comprising a base (1), and support guide columns (2) are installed at both ends of the base (1), characterized in that: A device box (3) and a box top cover (4) which are adapted to each other are connected to the support guide post (2) through a guide slider (21). A top plate (5) is installed on the top end of the support guide post (2). An electric telescopic rod (12) which is drivingly connected to the box top cover (4) is arranged at the inner bottom of the top plate (5). A sliding guide rail (7) is installed on the top plate (5) through an inclined bracket (6). An array of photovoltaic panels (8) is fixedly installed on the sliding guide rail (7) through a sliding mounting buckle (71). A photovoltaic controller (9) and a photovoltaic grid-connected inverter (10) which is electrically connected to the photovoltaic controller (9) are installed at the bottom of the box top cover (4).

2. The low-voltage photovoltaic grid-connected power generation equipment according to claim 1, characterized in that: Both sides of the array of photovoltaic panels (8) are fixedly arranged on the sliding guide rail (7) through a group of sliding mounting buckles (71). The array of photovoltaic panels (8) is electrically connected to the photovoltaic controller (9) through a first DC power meter (14) arranged on the top of the box top cover (4).

3. The low-voltage photovoltaic grid-connected power generation equipment according to claim 1, characterized in that: A second DC power meter (32) is arranged on the device box (3). The photovoltaic controller (9) is connected to the photovoltaic grid-connected inverter (10) through the second DC power meter (32). A battery pack (15) and a distribution box (11) are also arranged inside the device box (3). The photovoltaic controller (9) is connected to the battery pack (15), and the photovoltaic grid-connected inverter (10) is connected to the distribution box (11).

4. The low-voltage photovoltaic grid-connected power generation device according to claim 1, wherein: Heat dissipation cavities (31) are arranged on both sides inside the device box (3), and a heat dissipation fan and a semiconductor refrigeration sheet are arranged inside the heat dissipation cavities (31).

5. The low-voltage photovoltaic grid-connected power generation device according to claim 1, characterized in that: The box top cover (4) is driven to move up and down by the electric telescopic rod (12) to be separated from and combined with the device box (3).

6. The low-voltage photovoltaic grid-connected power generation equipment according to claim 1, characterized in that: A damping shock absorber (13) which is connected to the device box (3) is arranged at the center of the top of the base (1). A spring (22) which is connected to the guide slider (21) is sleeved on the bottom end of the support guide post (2).

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