Overwater photovoltaic module and photovoltaic system

Abstract

The embodiment of the utility model provides an overwater photovoltaic assembly and a photovoltaic system, and relates to the field of overwater photovoltaic technology. The overwater photovoltaic assembly provided by the utility model comprises a battery piece, a mounting plate, a transparent cover and a counterweight piece, wherein the mounting plate is used for bearing a carrier of the battery piece; the transparent cover covers the mounting plate and is in sealed connection with the mounting plate, a closed space is formed between the transparent cover and the mounting plate and is used for providing buoyancy for the photovoltaic module, and the battery piece is located in the closed space; the counterweight piece is arranged at the bottom of the mounting plate, so that the mounting plate is suspended in water, the top of the transparent cover is exposed out of the water surface, and the transparent cover sinks underwater when bearing load; the water photovoltaic system provided by the utility model comprises at least two water photovoltaic assemblies. According to the utility model, bird droppings are prevented from being accumulated on the battery pieces, so that the power generation efficiency of a photovoltaic system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water photovoltaic technology field, specifically, water photovoltaic module and photovoltaic system. BACKGROUND

[0002] At present, water photovoltaic generally includes fixed water photovoltaic and floating water photovoltaic, and the fixed water photovoltaic is installed by precast column in water, and the support is installed on the column, and finally the photovoltaic module is fixed to the support; the floating water photovoltaic is installed by setting the floating platform on the water surface, and the photovoltaic module is installed on the floating platform.

[0003] The inventor found that the fixed water photovoltaic and the floating water photovoltaic are always located on the water surface, and the birds will stop and live on the battery piece, and leave a large amount of excrement, feather and other sundries on the battery piece, which affects the absorption of sunlight by the battery piece, and further affects the power generation efficiency of the photovoltaic system. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a water photovoltaic module and photovoltaic system, which can improve the power generation efficiency of the photovoltaic system.

[0005] The embodiment of the utility model can be realized as follows:

[0006] On the one hand, the utility model provides a water photovoltaic module, which comprises a battery piece, and further comprises a mounting plate, a carrier for carrying the battery piece;

[0007] A transparent cover is arranged on the mounting plate and is in sealing connection with the mounting plate, and a closed space is formed between the transparent cover and the mounting plate, so as to provide buoyancy for the photovoltaic module, and the battery piece is located in the closed space;

[0008] A counterweight is arranged at the bottom of the mounting plate, so that the mounting plate and the battery piece are suspended in water, the top of the transparent cover is exposed to the water surface, and the transparent cover sinks underwater when bearing weight.

[0009] In some optional embodiments, the transparent cover is in an arched shape.

[0010] In some optional embodiments, at least one battery piece is arranged on the mounting plate.

[0011] In some optional embodiments, the counterweight comprises a storage container for storing water, and the storage container is detachably arranged at the bottom of the mounting plate.

[0012] In another aspect, the utility model provides a kind of water photovoltaic system, including at least two water photovoltaic modules in any of the preceding embodiment, the wire is connected on the cell piece, and the adjacent photovoltaic module is communicated by the wire.

[0013] Wherein, the adjacent counterweight is connected with each other, and the counterweight is movably connected with the mounting plate.

[0014] In some optional embodiments, the wire is connected with a joint, and the adjacent wires are communicated by the joint, and the wire is provided with a floating member at the joint, so as to make the joint float on the water surface.

[0015] In some optional embodiments, the top of the counterweight is provided with a telescopic rod, one end of the telescopic rod is slidably arranged in the counterweight, and the other end of the telescopic rod is detachably connected with the mounting plate.

[0016] In some optional embodiments, the counterweight is a container, the container has an expanded portion at the bottom, the projection area of the expanded portion on the horizontal plane is greater than the area of the mounting plate, and the edge of the expanded portion is provided with a connecting member, and the adjacent containers are connected by the connecting member.

[0017] In some optional embodiments, the connecting member includes a hanging ear.

[0018] In some optional embodiments, the bottom of the expanded portion is horizontally arranged, so as to abut against the water bottom when the water depth is less than the height of the photovoltaic module.

[0019] The water photovoltaic module and the photovoltaic system provided by the utility model embodiment have the following beneficial effects:

[0020] By arranging the transparent cover on the mounting plate, the buoyancy is provided for the photovoltaic module, so that the mounting plate and the cell piece are suspended under the water surface, and the light can irradiate on the cell piece through the transparent cover, without affecting the absorption of sunlight by the cell piece. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled in the art, other related drawings can be obtained without creative labor according to these drawings.

[0022] Figure 1 A structural schematic diagram of a waterborne photovoltaic module is provided for the embodiment;

[0023] Figure 2 A top view of a waterborne photovoltaic module is provided for the embodiment;

[0024] Figure 3 A bottom view of a waterborne photovoltaic module is provided for the embodiment;

[0025] Figure 4 A structural schematic diagram of a waterborne photovoltaic system is provided for the embodiment;

[0026] Figure 5 A structural schematic diagram of a waterborne photovoltaic module is provided for another optional embodiment.

[0027] Legend: 10 - photovoltaic module; 100 - cell; 110 - mounting plate; 200 - transparent cover; 210 - sealed space; 300 - counterweight; 310 - telescopic rod; 320 - unfolding part; 330 - connecting piece; 400 - wire; 410 - joint; 500 - floating piece. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0030] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0031] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model.

[0032] In addition, if the terms "first", "second" and the like are used only for differentiation, they cannot be understood as indicating or implying relative importance.

[0033] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0034] In recent years, the installed capacity of waterborne photovoltaics has shown a rapid growth trend worldwide, and waterborne photovoltaics are mainly divided into offshore projects and land water projects, the latter including lakes, reservoirs, rivers, artificial lakes and other different application scenarios. At present, waterborne photovoltaics generally include fixed waterborne photovoltaics and floating waterborne photovoltaics. Fixed waterborne photovoltaics are photovoltaic modules installed on photovoltaic supports, and the photovoltaic supports are fixed on pile foundations, which are laid in water, and have the advantages of simple construction, wide applicability, strong structural stability, etc. Floating waterborne photovoltaics are floating platforms of floating pipe type or floating box type set on the water surface, and photovoltaic modules are installed on the floating platforms, which are suitable for areas with large water depth and have the advantages of low construction cost and simple construction process.

[0035] However, it is found in actual use that because the cell pieces of fixed waterborne photovoltaics and floating waterborne photovoltaics are located on the water surface for a long time, they will attract flying birds to perch and nest, causing the flying birds to leave a large amount of feces, feathers and other debris on the cell pieces, thereby forming a blockage on the cell pieces, affecting the absorption of sunlight by the cell pieces, and further affecting the power generation efficiency of the photovoltaic system. At the same time, the accumulation of these debris on the cell pieces can easily cause damage to the cell pieces. And the surface of the cell pieces needs to be cleaned regularly, increasing the operation and maintenance cost of waterborne photovoltaics.

[0036] To solve the above technical problems, the utility model provides a waterborne photovoltaic module and a photovoltaic system applied to the field of waterborne photovoltaic power generation to avoid the accumulation of bird feces and other debris on the cell pieces, affecting the absorption of sunlight by the cell pieces, and further affecting the power generation efficiency of waterborne photovoltaics. The overall structure, working principle and technical effects of the waterborne photovoltaic module and photovoltaic system provided by the utility model are described in detail below through embodiments and in conjunction with the drawings.

[0037] In one aspect, the utility model provides a kind of water photovoltaic module 10, including cell piece 100, mounting plate 110, transparent cover 200 and counterweight 300, mounting plate 110 provides the installation of cell piece 100 with carrier, it plays the role of bearing support to cell piece 100.Transparent cover 200 is covered in mounting plate 110 top, transparent cover 200 is sealed with mounting plate 110 Connection, to form a closed space 210 between mounting plate 110 and transparent cover 200, cell piece 100 is located in closed space 210, because closed space 210 contains air, to provide buoyancy by closed space 210 entire photovoltaic module 10, so that photovoltaic module 10 floats on water surface.According to the situation of water body, the counterweight 300 of selected adaptive weight is arranged in the bottom of mounting plate 110, to make mounting plate 110 and cell piece 100 suspend in water, only the top of transparent cover 200 is exposed to water surface.Meanwhile, according to the situation of water body, the counterweight 300 of selected adaptive weight is arranged in the bottom of mounting plate 110, to make mounting plate 110 and cell piece 100 suspend in water, only the top of transparent cover 200 is exposed to water surface.

[0038] By being provided with transparent cover 200 on mounting plate 110, provide buoyancy for photovoltaic module 10, so that mounting plate 110 and cell piece 100 suspend under water surface, and sunlight can be irradiated to cell piece 100 by transparent cover 200, do not affect the absorption of cell piece 100 to sunlight, simultaneously, the setting of counterweight, when bird rests on transparent cover 200, transparent cover 200 sinks to underwater, to avoid bird resting on transparent cover 200;Even if bird excrement is excreted on transparent cover 200, with bird driving transparent cover 200 sinking to water, also realize the cleaning of transparent cover 200 by water flow, realize the self-cleaning effect of transparent cover 200.Thereby guarantee the full absorption of cell piece 100 to sunlight, improve the power generation efficiency of water photovoltaic module 10.

[0039] It can be understood that although cell piece 100 suspends underwater, because the distance between cell piece 100 and water surface is small, sunlight can be irradiated to cell piece 100 through water surface, and cell piece 100 is located underwater and does not affect the absorption of cell piece 100 to sunlight.Further, the weight of counterweight 300 can be selected according to the distribution of birds in water body, so that most birds can sink transparent cover 200 to underwater when resting on transparent cover 200.

[0040] Please refer to Figure 1 And Figure 2In some optional embodiments, the transparent cover 200 is arched, so that the transparent cover 200 can also focus sunlight on the solar cell 100, further improving the power generation efficiency. At the same time, the arched transparent cover 200 is also convenient for water flow to flush the bird droppings and other sundries on the transparent cover 200. Further, at least one solar cell 100 is arranged on the mounting plate 110, and the specific number of the solar cell 100 is determined according to the size of the transparent cover 200 selected in the actual use scene.

[0041] Please refer to Figure 1 and Figure 3 In some optional embodiments, the counterweight 300 is a storage container, which is detachably arranged at the bottom of the mounting plate 110. In this embodiment, the storage container is used to store water, and after the storage container is filled with water, the density of the storage container is slightly greater than that of water, so that the mounting plate 110 is suspended in water. In other embodiments, according to the water body condition and the specific buoyancy of the transparent cover 200, the storage container can also store other counterweight objects such as sand and other heavy objects, so as to suspend the mounting plate 110 in water. Further, in some other optional embodiments, the counterweight 300 can also be other objects with a density greater than water, and the specific structural form of the counterweight 300 is not limited in the utility model.

[0042] Please refer to Figure 4 - Figure 5 The utility model also discloses a kind of water photovoltaic system, including any one of the preceding embodiment in water photovoltaic module 10, wherein photovoltaic module 10 at least has two, and photovoltaic module 10 is connected each other.Further, wire 400 is connected on solar cell 100, and connector 410 is arranged at the end of wire 400, connector 410 is waterproof quick connector 410, adjacent photovoltaic module 10 is connected by wire 400, and wire 400 is quickly connected by connector 410 between each other. So that multiple photovoltaic modules 10 are made into photovoltaic system, to realize scale power generation.

[0043] Please refer to Figure 4 and Figure 5In some optional embodiments, in order to improve the overall structural stability of the waterborne photovoltaic system and avoid overturning of the photovoltaic module 10, the counterweights 300 in adjacent waterborne photovoltaic modules 10 are connected to each other, so as to connect the plurality of waterborne photovoltaic modules 10 as a whole and improve the overall structural stability of the waterborne photovoltaic system. Correspondingly, when the plurality of waterborne photovoltaic modules 10 are connected as a whole, if birds perch on one of the transparent covers 200, the other transparent covers 200 will share the weight of the birds, so that the transparent cover 200 cannot sink. Based on this, the counterweight 300 is movably connected to the mounting plate 110 in the up-down direction, so that the mounting plate 110 can move relative to the counterweight 300 in the up-down direction. Therefore, in actual use, the counterweights 300 connected to each other are located on the same horizontal plane, and when one of the transparent covers 200 has birds perched on it, the transparent cover 200 sinks, and the other transparent covers 200 remain in a floating state, so as to avoid the accumulation of bird droppings on the transparent cover 200 while not affecting the operation of the overall waterborne photovoltaic system.

[0044] Please refer to Figure 4 and Figure 5 In some optional embodiments, a float 500 is arranged on the wire 400 at the joint 410, so as to make the joint 410 float on the water surface. In this embodiment, the float 500 is a foam protection box, and when the two wires 400 are connected, the joint 410 is connected, and then the two foam protection boxes are connected. The foam box provides buoyancy for the joint 410, so as to avoid damage, leakage and other situations caused by immersion of the joint 410 under water. Further, the foam box is hollow, which can quickly drain water into the foam box. In other embodiments, the float 500 can also be a gas bag, a float pipe, a float box and other structures that can make the joint 410 separate from the water surface. The specific structure of the float 500 is not limited in the utility model.

[0045] Please refer to Figure 4 and Figure 5 In some optional embodiments, in order to make the mounting plate 110 and the counterweight 300 movably connected in the vertical direction, a telescopic rod 310 is arranged at the top of the middle part, the lower end of the telescopic rod 310 is arranged in the counterweight 300 in the vertical direction, and the upper end of the telescopic rod 310 is detachably connected with the mounting plate 110. The effect that the mounting plate 110 can move relative to the counterweight 300 in the vertical direction is achieved.

[0046] Please refer to Figure 4 and Figure 5In some optional embodiments, the counterweight 300 is a container for storing water, and the bottom of the container is expanded in a horizontal direction as an expanded portion 320, the projected area of the expanded portion 320 on a horizontal plane is greater than the area of the mounting plate 110, and a connecting piece 330 is arranged at the edge of the expanded portion 320, and the adjacent containers are connected through the connecting piece 330. By arranging the expanded portion 320, when the expanded portions 320 are connected to each other, there is a gap between the adjacent transparent covers 200, so as to avoid the damage caused by the collision between the adjacent transparent covers 200 under the action of water flow. In the embodiment, the connecting piece 330 includes a hanging ear, and when the adjacent counterweights 300 are connected to each other, the hanging ears on the adjacent expanded portions 320 are connected to each other in a buckling manner, so as to realize the connection of the adjacent counterweights 300. In other optional embodiments, the connecting piece 330 can also be a buckle, a rope buckle or other connecting structures.

[0047] Please refer to Figure 5 The bottom of the expanded portion 320 is arranged horizontally, that is, the bottom of the counterweight 300 is arranged horizontally. When the water-based photovoltaic system is arranged in a land water body, in the dry season, the photovoltaic module 10 can be stably placed on the riverbed or shoal through the bottom of the expanded portion 320, so as to avoid the photovoltaic module 10 from falling down. Therefore, the water-based photovoltaic system can also be normally used in the dry season, and the compatibility and application range of the water-based photovoltaic system are improved.

[0048] In summary, the implementation principle of the water-based photovoltaic module and the photovoltaic system provided by the utility model is that: the transparent cover 200 is arranged on the mounting plate 110 to provide buoyancy for the photovoltaic module 10, so that the mounting plate 110 and the cell sheet 100 are suspended under the water surface, and the light can irradiate on the cell sheet 100 through the transparent cover 200, without affecting the absorption of sunlight by the cell sheet 100. At the same time, the arrangement of the counterweight makes the transparent cover 200 sink into the water when the birds perch on the transparent cover 200, so as to avoid the birds perching on the transparent cover 200. Even if the bird excrement is excreted on the transparent cover 200, the transparent cover 200 is also sunk into the water by the birds, and the transparent cover 200 is also cleaned by the water flow, so as to realize the self-cleaning of the transparent cover 200. Therefore, the bird droppings and other sundries are prevented from accumulating on the surface of the transparent cover 200, the full absorption of sunlight by the cell sheet 100 is ensured, and the power generation efficiency of the water-based photovoltaic module 10 is improved.

[0049] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A waterborne photovoltaic module comprising a cell sheet, characterized in that, Also included are: a mounting plate for carrying the carriers of the battery pieces; a transparent cover covering the mounting plate and sealingly connected with the mounting plate, a closed space being formed between the transparent cover and the mounting plate for providing buoyancy for the photovoltaic module, and the battery pieces being located in the closed space; a counterweight arranged at the bottom of the mounting plate to make the mounting plate float in water, the top of the transparent cover being exposed to the water surface, and the transparent cover sinking underwater when bearing weight.

2. The water-based photovoltaic module of claim 1, wherein, The transparent cover is arched.

3. The water-based photovoltaic assembly of claim 1, wherein, At least one battery piece is arranged on the mounting plate.

4. The water-based photovoltaic assembly of claim 1, wherein, The counterweight includes a storage container for storing water, which is detachably arranged at the bottom of the mounting plate.

5. A water-based photovoltaic system, characterized by, At least two photovoltaic modules as claimed in any one of claims 1-4 are included, wires being connected to the battery pieces, and the adjacent photovoltaic modules being connected through the wires; wherein the adjacent counterweights are connected with each other, and the counterweights are movably connected with the mounting plate.

6. The water-based photovoltaic system of claim 5, wherein, The wires are connected with connectors, the adjacent wires being connected through the connectors, and the wires being provided with floating members at the connectors to make the connectors float on the water surface.

7. The water-based photovoltaic system of claim 5, wherein, The counterweight is provided with an extension rod at the top, one end of the extension rod being slidingly arranged in the counterweight, and the other end of the extension rod being detachably connected with the mounting plate.

8. The water-based photovoltaic system of claim 5, wherein, The counterweight is a storage container, the storage container being provided with an expanded portion at the bottom, the projection area of the expanded portion on the horizontal plane being greater than the area of the mounting plate, and the expanded portion being provided with a connecting member at the edge, the adjacent storage containers being connected through the connecting member.

9. The water-based photovoltaic system of claim 8, wherein, The connecting member includes a hanging ear.

10. The water-based photovoltaic system of claim 8, wherein, The bottom of the expanded portion is horizontally arranged to resist the water bottom when the water depth is less than the height of the photovoltaic module.

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