Snow removing and anti-freezing device for photovoltaic module

Abstract

The utility model relates to the photovoltaic field, and discloses a snow removing and anti-freezing device for a photovoltaic module, which comprises a plurality of frame units which are connected through joints. Each frame unit comprises a corrugated plate made of metal, each corrugated plate comprises wave crest parts and wave trough parts formed between the wave crest parts, mounting cavities are formed in the inner sides of the wave crest parts, the bottom plates are located below the corrugated plates, the bottom plates and the two ends of the heat preservation plate form an integrated structure, and transition cavities are formed between the corrugated plates and the wave trough parts. The heat tracing band is mounted in the mounting cavity; and a basic sealing part is further included, a filling block matched with the transition cavity and the mounting cavity in section shape is arranged on the basic sealing part, the basic sealing part further comprises a sealing panel, the filling part and the sealing panel are of an integrated structure, and the filling block is mounted in the transition cavity and the mounting cavity during mounting. The device can avoid the problem that the equipment cannot run or even breaks down due to large-area accumulated snow on the photovoltaic module.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic power generation, in particular to a snow-removing and anti-freezing device for photovoltaic components. Background Art

[0002] In photovoltaic power generation systems, when encountering heavy snow, the temperature is low and snow accumulates on the photovoltaic modules. The snow cannot melt in time or melts slowly, which affects the power generation and puts great pressure on the photovoltaic modules.

[0003] Chinese patent application CN117639648A discloses a photovoltaic power generation system with snow removal capabilities. The system incorporates at least one heating module located on the lower frame of a photovoltaic module; the heating module is independent of the photovoltaic module. By arranging the heating module on the lower frame of the photovoltaic module, when snow accumulates on the module, the heating module is activated to heat the module, allowing the snow to slide down from above, effectively removing the snow.

[0004] However, this heating method has a limited contact area and poor heating effect, which cannot meet the needs when encountering heavy snow and ice weather. At the same time, it cannot be used in a large area and is relatively complicated to install. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and provides a snow-removing and anti-freezing device for photovoltaic modules.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A snow-removal and antifreeze device for photovoltaic modules comprises several frame units connected by joints; the frame units comprise a corrugated plate made of metal, the corrugated plate comprising a crest portion and a trough portion formed between the crest portions, an installation cavity being formed inside the crest portion, the device further comprises a bottom plate which is located below the corrugated plate and forms an integral structure with both ends of an insulation plate, a transition cavity being formed between the corrugated plate and the trough portion, the device further comprises a heating tape which is installed in the installation cavity, and a basic sealing portion which is provided with a filling block which is adapted to the cross-sectional shape of the transition cavity and the installation cavity, the basic sealing portion further comprises a sealing panel, the filling portion and the sealing panel are an integral structure, and the filling block is installed in the transition cavity and the installation cavity during installation.

[0008] Preferably, a connecting sealing portion is further included, wherein the connecting sealing portion is provided with a wiring joint on the basis of the basic sealing portion, and the wiring joint is used to connect with adjacent frame units.

[0009] Preferably, a bayonet is provided on the outermost side of the corrugated plate, which is arranged parallel to the installation cavity. The bayonet is used to install the starting pipe, and the starting pipe is fixed in the bayonet, wherein the bayonet and the starting pipe are fixedly connected by screws.

[0010] Preferably, the wiring joint is a waterproof joint.

[0011] Preferably, an electric heating control box is further included, and each frame unit is electrically connected to the electric heating control box in parallel; the electric heating control box controls the heating power and heating time of each frame unit.

[0012] Preferably, the electric heating control box is connected to two sets of power supply lines, one of which is connected to the photovoltaic module through the inverter; and the other is connected to the mains.

[0013] Preferably, the frame unit is made of aluminum alloy.

[0014] Preferably, the heating tape of each frame unit is installed in the installation cavity in an "S"-shaped reciprocating direction.

[0015] Preferably, an independent heating tape is installed in each installation cavity of the frame unit.

[0016] Preferably, a groove structure for arranging a wire is provided on the sealing panel connected to the sealing part.

[0017] This solution offers the following advantages over existing technologies: First, its modular design facilitates assembly and subsequent replacement. Second, its large contact area with the PV panels provides effective heating and rapid snow removal. Furthermore, its innovative controller utilizes two heating modes based on actual needs, ensuring that snow accumulation is eliminated from the PV panels while achieving energy savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of the frame unit device.

[0019] Figure 2 A schematic diagram of the overall structure of the device.

[0020] Figure 3 Schematic diagram of the structure of the basic sealing part.

[0021] Figure 4 It is a structural diagram of the connection sealing part.

[0022] Figure 5 It is a structural diagram of the connection sealing part.

[0023] Figure 6 It is a structural diagram of the controller.

[0024] The technical names of the figures in the figure are: 1-frame unit, 2-peak part, 3-trough part, 4-installation cavity, 5-base plate, 6-transition cavity, 7-heating belt, 8-foundation sealing part, 9-filling block, 10-sealing panel, 11-connecting sealing part, 12-wiring joint, 13-bayonet, 14-starting pipe, 15-control box, 16-slot structure. DETAILED DESCRIPTION

[0025] The present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] A snow removal and antifreeze device for photovoltaic modules includes several frame units 1 connected by joints. The frame units 1 include a corrugated metal plate, comprising a peak portion 2 and a trough portion 3 formed between the peak portions 2. The peak portions 2 define a mounting cavity 4 within the inner portion. The frame units 1 also include a bottom plate 5 positioned below the corrugated plate and integrally formed with the ends of the insulation plate. A transition cavity 6 is formed between the corrugated plate and the trough portions 3. The frame units 1 also include a heating tape installed within the mounting cavity 4. The frame units 1 also include a base sealing portion 8, provided with a filler block 9 having a cross-sectional shape adapted to the transition cavity 6 and the mounting cavity 4. The base sealing portion 8 also includes a sealing panel 10. The filler block and the sealing panel 10 are integrally formed. During installation, the filler block 9 is installed within the transition cavity 6 and the mounting cavity 4. The frame units 1 are mounted on the underside of the photovoltaic module, with the peak portion 2 in contact with the module. When heated, the heating tape heats the entire frame unit 1, thereby heating the entire frame unit 1 to complete the snow removal operation. The installation cavity 4 and the transition cavity 6 are an integrated structure, and the cross-sectional shape of the entire cavity they form is roughly comb-tooth-shaped.

[0028] The basic sealing portion 8 is the outermost sealing portion, which does not need to be connected to other sealing portions; it mainly plays the role of waterproof sealing at the edge.

[0029] The system also includes a connecting seal 11. This connecting seal 11 is equipped with a wiring connector 12 on the basis of the basic sealing portion 8. This connector 12 is used to connect to adjacent frame units 1. This connecting seal 11 is used to combine multiple frame units 1 into a large frame. The wiring connectors provided on the connecting seal 11 are commonly used power connectors on the market, preferably with a high waterproof rating. This method facilitates assembly and subsequent control.

[0030] The outermost edge of the corrugated plate is provided with a bayonet 13, parallel to the mounting cavity 4. A starting tube 14 is mounted within bayonet 13 and secured thereto. The bayonet 13 and the starting tube 14 are connected by screws. The outermost position of the starting tube 14 forms a cohesive whole and facilitates longitudinal extension of the frame. During longitudinal extension, the bayonet 13 of two frame units 1 is secured to the same starting tube 14 and secured with screws.

[0031] Since the wiring connector 12 is often exposed to rain and snow during operation, it is a waterproof connector.

[0032] Obviously, the equipment also needs to be controlled, so an electric heating control box 15 is also included. Each frame unit 1 is electrically connected in parallel to the electric heating control box 15; the electric heating control box 15 controls the heating power and heating time of each frame unit 1. The electric heating control box 15 is equipped with a switch knob for turning the heating cable on and off.

[0033] Winter often sees light snowfall, and the combination of low nighttime temperatures and frozen snow slows down the daytime melt. Furthermore, during periods of continuous or heavy snowfall, the thick snow is difficult to melt quickly with sunlight, which can damage equipment and cause collapse.

[0034] To address this issue, the electric heating control box 15 of this solution is connected to two power supply lines: one connected to the photovoltaic panels via an inverter; the other connected to the mains. The inverter connects to the photovoltaic panels, generating electricity that heats the heating cable. This is used to assist solar snow removal during light snowfall, resulting in lower power consumption and greater energy savings. However, during periods of continuous snowfall or freezing rain, higher power is required, requiring the mains to power snow removal operations.

[0035] In order to reduce weight and improve heat transfer efficiency, the frame unit 1 is made of aluminum alloy.

[0036] In this embodiment, a slot structure 16 for arranging a wire is provided on the sealing panel 10 connected to the sealing portion 11 .

[0037] Example 2

[0038] The difference between this embodiment and embodiment 1 is that the heating tape of each frame unit 1 is installed in the installation cavity 4 in an "S"-shaped reciprocating direction.

[0039] Example 3

[0040] The difference between this embodiment and embodiment 1 is that the heating tape in each installation cavity 4 is an independent heating unit.

[0041] Example 4

[0042] The heating cable model is HC-BL2Q-J3-40, where HC stands for parallel heating cable, BL2 represents the number of cores, 2 stands for single-phase 220V, Q stands for reinforced cable, and J3 represents the insulation grade, specifically F46, with a high-temperature resistance of 205°C. 40 represents the power per unit length, measured in watts per meter.

Claims

1. A snow removal and antifreeze device for photovoltaic modules, characterized by: The invention comprises a plurality of frame units (1), each frame unit (1) being connected by a joint; the frame unit (1) comprises a corrugated plate made of a metal material, the corrugated plate comprising a crest portion (2) and a trough portion (3) formed between the crest portions (2), an installation cavity (4) being formed inside the crest portion (2), a bottom plate (5) being located below the corrugated plate and forming an integral structure with both ends of the insulation plate, a transition cavity (6) being formed between the corrugated plate and the trough portion (3), a heating tape being installed in the installation cavity (4), and a basic sealing portion (8), a filling block (9) being provided on the basic sealing portion (8) and matching the cross-sectional shape of the transition cavity (6) and the installation cavity (4), the basic sealing portion (8) further comprising a sealing panel (10), the filling portion and the sealing panel (10) being an integral structure, and the filling block (9) being installed in the transition cavity (6) and the installation cavity (4) during installation.

2. The snow removal and antifreeze device for photovoltaic modules according to claim 1, characterized in that: It also includes a connecting sealing portion (11), wherein the connecting sealing portion (11) is provided with a wiring joint (12) on the basis of the basic sealing portion (8), and the wiring joint (12) is used to connect with an adjacent frame unit (1).

3. The snow removal and antifreeze device for photovoltaic modules according to claim 1, characterized in that: A bayonet (13) is provided on the outermost side of the corrugated plate. The bayonet (13) is arranged parallel to the mounting cavity (4). The bayonet (13) is used to mount a starting tube (14). The starting tube (14) is fixed in the bayonet (13). The bayonet (13) and the starting tube (14) are fixedly connected by screws.

4. The snow removal and antifreeze device for photovoltaic modules according to claim 2, characterized in that: The wiring connector (12) is a waterproof connector.

5. The snow removal and antifreeze device for photovoltaic modules according to claim 1, characterized in that: It also includes an electric heating control box (15), and each frame unit (1) is electrically connected in parallel to the electric heating control box (15); the electric heating control box (15) controls the heating power and heating time of each frame unit (1).

6. The snow removal and antifreeze device for photovoltaic modules according to claim 5, characterized in that: The electric heating control box (15) is connected to two sets of power supply lines, one of which is connected to the photovoltaic module through the inverter; and the other is connected to the mains.

7. The snow removal and antifreeze device for photovoltaic modules according to claim 1, characterized in that: The frame unit (1) is made of aluminum alloy.

8. The snow removal and antifreeze device for photovoltaic modules according to claim 1, characterized in that: The heating tape of each frame unit (1) is installed in the installation cavity (4) in an "S"-shaped reciprocating direction.

9. The snow removal and antifreeze device for photovoltaic modules according to claim 1, characterized in that: An independent heating tape is installed in each installation cavity (4) of the frame unit (1).

10. The snow removal and antifreeze device for photovoltaic modules according to claim 2, characterized in that: A slot structure (16) for arranging a wire is provided on the sealing panel (10) connected to the sealing portion (11).

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