KR20110001457A - Solar cell heat dissipation cooling system - Google Patents

Abstract

The present invention comprises a heat radiation cooling sheet including a plurality of cooling projections to directly attach to the solar panel to cool the solar panel to protect the rear of the solar cell vulnerable to waterproofing when spraying the coolant with a sprinkler, etc. The backsheet of the solar panel can be protected from corrosion, and in particular, the light weight of the cooling structure can be minimized to minimize durability degradation, and the heat dissipation area by the plurality of cooling projections can be increased to efficiently cool the solar panel. It can be effective.

Solar cell, PV, Cooling, Coolant, Peltier element, Electronic cooling, Heating, Solar, Cooling projection

Description

Radiation cooling device for photovoltaic module

The present invention relates to a solar cell heat dissipation cooling apparatus for cooling a solar cell.

As a solar cell cooling method of the prior art, a method using a sprinkler and a method using an aluminum heat sink are generally used.

The method using a sprinkler cools the solar cell module by spraying water on the front side of the solar cell module, because the backsheet bonded to fix the cell to the rear side of the solar cell module is vulnerable to waterproof problems. Cooling by spraying water using a sprinkler on the front of the solar cell module has the advantages of low installation cost and simple maintenance, but considering that the heat generating part is the rear of the solar cell module, the actual cooling effect is lowered. In addition, there is a disadvantage that the efficiency of the solar cell is also lowered by the scattering by the cooling water.

In the method of using the aluminum heat sink, the aluminum heat sink having high thermal conductivity is closely adhered to the rear of the solar cell module to cool the solar cell module. The cooling efficiency is high, but the solar cell aluminum is perforated and bolted or strongly pressed with a spring. Since it is installed in such a way as to reduce the durability of the solar cell module, there is a disadvantage such as reduced management costs and effectiveness due to the gap that gradually occurs with use for a long time. In particular, as the aluminum heat sink made of metal is increased, the load of the solar cell module and the structure supporting the same increases, and additional reinforcing structures are needed to withstand such loads, resulting in an increase in the installation cost as a whole. do.

As a result, as described above, the method of cooling the solar cell module using a sprinkler has a problem of solar cell contamination and leakage caused by leakage or foreign matters, a problem in using the heat generated indirectly, and an aluminum heat sink. The cooling method of the solar cell module has a problem of lowering the durability of the solar cell module and the supporting structure, which may be caused by the punching work performed on the solar cell frame and the load of the heat sink.

The present invention has been made to solve the above problems, by using a heat-radiating cooling sheet directly attached to the solar panel configured to cool the solar cell by minimizing the durability degradation of the solar panel and the structure supporting the solar cell It is an object of the present invention to provide a solar cell heat dissipation cooling apparatus that can further improve the cooling efficiency.

Solar cell heat dissipation cooling apparatus according to the present invention for realizing the above object is a solar panel for receiving electricity to generate sunlight; Directly attached to the solar panel to cool the solar panel, it characterized in that it comprises a heat dissipation cooling sheet including a plurality of cooling projections.

The cooling projection is preferably formed in a linear structure or a sheet-like structure.

The cooling protrusion is preferably made of a metal material having a high heat transfer rate.

The cooling projection may be configured to include a coolant absorber to evaporate while performing a cooling action in the state of absorbing the coolant.

The solar cell heat dissipation cooling apparatus may be configured to further include a coolant bag provided on one side of the solar panel to cool the solar panel in a state in which the coolant is temporarily stored.

The coolant bag is installed to maintain the state in close contact with the solar panel by the contact means, wherein the contact means is installed on the frame supporting the solar panel to provide an elastic force in the direction in which the coolant bag is in close contact with the solar panel. It may be composed of a leaf spring.

The coolant bag may be configured to include a coolant absorber for absorbing and maintaining the coolant.

The coolant bag may be connected to a cooling fluid circulator so that cooling is performed while the cooling fluid is circulated.

In this case, the cooling fluid circulation device may be an electronic cooling device connected to the coolant bag to circulate the cooling fluid.

In addition, the cooling fluid circulation device may be configured to circulate the cooling fluid in the coolant bag in the coolant reservoir installed in the ground.

On the other hand, the cooling fluid circulation device may include a heat exchange device for heat exchange with the heating boiler or hot water storage tank while the cooling liquid discharged from the coolant bag passes.

Solar cell heat dissipation cooling apparatus according to the present invention for realizing the above object is a solar panel for receiving electricity to generate sunlight; It is attached directly to the solar panel to cool the solar panel, characterized in that it comprises a cooling liquid absorber to perform a cooling action while evaporating the cooling liquid in the state of absorbing the cooling liquid sprayed on the solar panel.

At this time, the cooling liquid absorber is preferably made of a porous material.

Solar cell heat dissipation cooling apparatus according to the present invention has the following effects.

The present invention, since the heat dissipation cooling sheet is directly attached to the solar panel is configured to cool the solar panel to protect the back of the solar cell vulnerable to waterproofing when spraying the coolant with a sprinkler or the like to prevent damage caused by leakage or short circuit, The backsheet of the solar panel can be protected from corrosion by air pollution, and in particular, a plurality of cooling protrusions are provided to expand the heat dissipation area, so that the solar panel can be cooled more efficiently.

In addition, the present invention, since the heat dissipation cooling sheet is configured to be attached to the solar panel is composed of a thin sheet-like structure, the weight of the cooling device is light, so that the physical load received by the support structure for fixing the solar cell cooling device It has the effect that the weight of a support structure can be realized at the minimum.

In addition, the present invention can further improve the cooling efficiency when the cooling liquid absorber, the cooling liquid bag, the cooling liquid circulating structure, etc. are additionally installed in the heat dissipation cooling sheet, thereby improving the power generation efficiency of the solar cell from the external environment. It protects solar cells and further has the effect of reusing waste heat in fields such as hot water and heating.

Particularly, in the present invention, when the cooling liquid absorber is formed in the heat dissipation cooling sheet, the cooling water sprayed by the sprinkler or the like stays temporarily in the cooling projection to obtain the secondary cooling effect by evaporative heat so that the cooling effect is maintained for a long time. This has the effect of further improving the cooling efficiency of the solar cell.

As a result, the present invention overcomes the problems of solar cell contamination and leakage caused by leaks or foreign matters caused by the conventional sprinkler use method, and the use problem in which the heat generation does not directly affect the back surface of high heat generation. It solves the problem of durability deterioration due to the perforation work on the edge of the solar cell generated by installing the heat dissipation structure directly on the rear of the solar cell, the durability problem of the solar panel due to the increase of the weight of the heat dissipation structure, and the structural problem of the entire supporting structure. This has the effect of having better solar cell cooling performance.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a solar cell module with a heat dissipation cooling apparatus according to a first embodiment of the present invention, Figure 2 is a detailed view of the 'A' portion of FIG.

As illustrated in these figures, in the solar cell module, a plurality of solar panels 20 are disposed in the frame 10 having a lattice structure, and a plurality of cooling protrusions 35 are provided on the rear surface of the solar panel 20. A heat dissipation cooling sheet 30 having a is installed.

The frame 10 is preferably made of an aluminum material, and may be composed of a frame frame largely disposed on the outside and a grid frame for supporting a plurality of solar panels 20 having a predetermined area inside the frame. Can be.

The solar cell plate 20 is a device for converting light energy into electrical energy. The solar cell element, a surface material constituting the front and rear surfaces of the solar panel 20 in order to protect the solar cell element (generally, Low iron tempered glass) (21) and the back sheet 25, and may be composed of EVA (Ethyl Violet Azide) to be filled between the surface material and the back sheet 25 to protect the solar cell device. This is a configuration of a general solar panel 20, but is not necessarily limited thereto.

The heat dissipation cooling sheet 30 is preferably attached to the back sheet 25, which is the rear surface of the solar panel 20, which is installed on the rear surface of the solar panel 20 having a large amount of heat generation to improve cooling efficiency. . The installation position of the heat dissipation cooling sheet 30 is not limited to being installed on the rear side of the solar panel 20, and other positions of the solar cell module such as the frame 10 as long as the solar panel 20 can be cooled. It can also be installed in the configuration.

The heat dissipation cooling sheet 30 is waterproof, it can withstand chemical adhesion, it is preferable to implement a material having a property that does not change for a long time. In particular, it is preferable that the solar cell module is made of a material capable of cooling while sufficiently protecting the solar panel 20 from sprinkling of cooling water of a sprinkler facility. For this purpose, it is preferable to be composed of a metallic material having high heat transfer efficiency and sufficient durability. As a preferable material of the heat dissipation cooling sheet 30, it is preferable to use a metal sheet such as aluminum foil, copper wire or copper foil.

The heat dissipation cooling sheet 30 is preferably formed of a structure coated with a coating material so as to minimize contamination or damage caused by cooling water sprayed from a sprinkler or the like and foreign matters flying from the surroundings.

Referring to FIG. 2, the heat dissipation cooling sheet 30 illustrated in the present embodiment includes a sheet portion 31 attached to the back sheet 25 of the solar panel 20 and a protruding portion from the sheet portion 31. It may be composed of a plurality of cooling projections (35).

The cooling projection 35 is formed to protrude in a fin-like structure on the sheet portion 31 so as to enlarge the contact area with air or the cooling liquid. The cooling protrusion 35 may be formed in a structure in which a portion of the cooling protrusion 35 is cut out and protruded. The shape of the cooling protrusion 35 may include a linear structure or a sheet structure.

Instead of forming the cooling protrusion 35 as an integral structure in which the cooling protrusion 35 is cut out from the seat 31 as described above, the cooling protrusion 35 is manufactured separately and installed to be attached or fixed to the seat 31. It is also possible. This will be described later with reference to FIG. 4.

As described above, the solar cell module provided with the heat dissipation cooling apparatus according to the first embodiment of the present invention, the plurality of cooling projections 25 are protruded to maximize the heat dissipation area to maximize the solar cell panel 20 with a simple structure Can increase the cooling efficiency.

In addition, when the cooling water is sprayed on the solar panel 20 using a sprinkler or the like, the cooling water does not flow immediately but is evaporated in a state that is widely spread on the surface of the cooling projection 25, thereby further improving the cooling efficiency of the solar panel. You can do it.

In the following embodiments of the present invention and its drawings, the same reference numerals are given to the same or similar components as those of the above-described embodiment, and repeated description thereof will be omitted if possible.

3 is a perspective view of a solar cell module with a heat dissipation cooling apparatus according to a second embodiment of the present invention, Figure 4 is a detailed view of the 'B' portion of Figure 3, Figure 5 is a 'C' portion of FIG. Detailed view.

The solar cell module with the heat dissipation cooling apparatus according to the second embodiment of the present invention as illustrated in these figures, the cooling apparatus 100 having a fin-like structure having a structure similar to the cooling apparatus in the first embodiment described above ), An embodiment in which a cooling device 200 having a bag structure and a cooling device 300 having an absorption fin type structure are combined. Each of these cooling devices 100, 200, 300 is not limited to being configured with each other, but may be configured independently of each other or combined with any one cooling device.

Hereinafter, since the configuration of the solar panel 20 and the frame 10 supporting the same is well known, the respective cooling apparatuses for cooling the solar panel 20 will be described.

First, referring to FIGS. 3 and 4, the cooling device 100 having the fin structure has a sheet portion 31 attached to the back sheet 25 of the solar panel 20, and the sheet portion 31. It may be composed of a plurality of cooling projections 35 are installed.

Since the sheet part 31 is preferably made of the same characteristics and materials as the heat-dissipating cooling sheet 30 of the first embodiment, the repeated description is omitted.

Cooling protrusion 35 may be formed in a linear structure or a sheet-like structure, the sheet-like structure is illustrated in the drawings (Figs. 3 and 4) of this embodiment.

The cooling projection 35 is preferably configured to be easily attached or fixed to the sheet portion 31. This is to easily replace the cooling projections 35 that need replacement and repair from the seat 31 when the cooling projection 35 is damaged or needs to be replaced with a long time of use. To this end, the cooling projection 35 may be attached to the sheet portion 31 using an adhesive having thermal conductivity, and may be configured to be removed when a problem occurs. In addition, it is also possible to install the cooling projections 35 in a manner of being in close contact with the sheet portion 31 and fixing the adhesive sheet or the like.

In FIG. 4, a bonding part is provided at an upper end of the cooling protrusion 35 having a sheet structure to show a state of being bonded to the sheet part 31.

Cooling protrusion 35 is also preferably made of the same material as the sheet portion 31, but is not necessarily limited to this material can be selected by selecting a variety of known materials if the material having a heat dissipation performance.

As the preferred material of the cooling projection 35, it is preferable to use a material having excellent thermal conductivity, such as aluminum foil, copper wire, or copper foil, to implement a thin and light form like a thread or paper.

Meanwhile, in the above-described embodiment, the cooling protrusions 35 have been described with an example in which the cooling protrusions 35 are installed in the sheet part 31. However, if necessary, the cooling protrusions 35 may be replaced by the back sheet of the solar panel 20. It is also possible to attach it directly to 25). It is also possible to omit the back sheet 25 and to form the sheet portion 31 in place of the back sheet 25 of the solar panel 20. At this time, the sheet part 31 has a rigidity enough to protect the solar cell element inside, and should use a material having waterproofness to prevent penetration of moisture and the like.

Next, referring to FIG. 5, the cooling device 300 having the absorption fin type structure is provided in a structure in which the sheet cooling liquid absorber 37 is fixed or adhered to the cooling projection 35 as described above. It is configured to absorb cooling fluid such as sprayed water. This can increase the heat dissipation effect by expanding the contact area with air by installing the sheet cooling liquid absorber 37 in the cooling projection 35, and in particular, absorbs cooling fluid such as water from the sheet cooling liquid absorber 37. In one state, the heat generated from the solar panel 20 is discharged to the outside while the fluid evaporates so that the cooling efficiency can be maintained for a long time.

The sheet cooling liquid absorber 37 is preferably installed so as to broaden the space as much as possible, and may be formed in a structure in which a porous material such as a sponge is attached to the cooling protrusion 35 having a sheet structure. Alternatively, the sheet cooling liquid absorber 37 may be configured to be directly attached to the sheet portion 31 instead of the cooling projection 35.

The cooling device 300 having such an absorption fin type structure inserts a chemical agent having a high heat absorption into the sheet cooling liquid absorber 37 to maintain a sufficiently cooled state before sunrise at the time of the sun's middle time to maintain cooling performance. It is also possible to cool the solar panel 20 in an improved manner.

Next, referring to FIG. 3, the cooling device 200 having a bag structure includes a coolant bag 41 installed in close contact with the cooling sheet 32, and a coolant absorber for a bag installed in the coolant bag 41. 45).

The coolant bag 41 is preferably made of a material capable of stably supporting the coolant absorber 45 for the bag in a state of being tightly fixed to the cooling sheet 32. Examples of such a material may be a lightweight material capable of shrinkage expansion such as vinyls, rubbers, urethanes, silicones, and the like. Moreover, when there is no elasticity, it is preferable to comprise with a material with sufficient durability.

Such a coolant bag 41 is preferably a method of being fixed in close contact with the cooling sheet 32, such as the sheet portion 31 of the cooling device 100 having the fin-type structure described above, depending on the solar cell panel ( It is also possible to fix it by being in close contact with the back of 20).

The bag coolant absorber 45 is preferably configured to adjust the flow rate by absorbing the cooling fluid provided from the outside, such as a sprinkler or temporarily held by using osmotic pressure or surface tension.

On the other hand, it is also possible to configure the cooling projections 35 as described above on the outside of the coolant bag 41 to increase the cooling efficiency.

In addition, the coolant bag 41 may be configured by filling a cooling fluid of a chemical material capable of smoothly performing a heat dissipation action.

In addition, as in the coolant bag 41 ′ positioned at the bottom of FIG. 3, a cooling fluid may be introduced, and after the inflow, the plurality of holes 42 may be configured to allow evaporation of water.

FIG. 6 is a view illustrating an embodiment for attaching the cooling bag to the solar panel 20 in a state where the plate spring 50 is mounted on the frame 10 supporting the solar panel 20. By pressing the coolant bag 41 against the solar panel 20 by the elastic force of the leaf spring 50, it can be configured to increase the cooling efficiency.

In FIG. 6, reference numeral 12 denotes a spring support part provided in the frame 10.

7 and 8 are views showing the configuration of the embodiment to further increase the cooling efficiency of the solar cell by additionally connecting a cooling fluid circulation device to the configuration of the solar cell heat dissipation cooling apparatus of the second embodiment of the present invention.

7 is an exemplary view showing a structure in which the coolant bag 41 and the electronic cooling device are connected.

As shown in FIG. 7, the plurality of coolant bags 41 are connected to the bag connector 43, and the electronic cooling device 60 is installed on the bag connector 43, so that the coolant fluid is stored in the coolant bag ( 41) shows a state configured to enable a continuous cooling action while circulating the electronic cooling device (60).

The electronic cooling device 60 is configured to cool the solar panel 20 while appropriately adjusting the temperature of the cooling fluid, and may be a cooling device using a Peltier device. Preferably, a cooling fan 62 is further provided to cool the heat generating portion of the Peltier element.

On the other hand, as shown in the drawings, the configuration of the connection pipe 43 connected between the plurality of coolant bags 41 and the electronic cooling device 60, if the cooling fluid can be circulated, can be appropriately modified according to the implementation conditions. Of course it can.

In addition, instead of the electronic cooling device 80 can be configured using a refrigeration cycle device, of course. At this time, the coolant bag 41 serves as an evaporator, and the connection pipe 43 may be configured to sequentially connect a compressor, a condenser, an expansion mechanism, and the like.

8 is an exemplary view showing a structure connected to the coolant bag 41 and the underground coolant reservoir 70.

As shown in FIG. 8, the cooling fluid heated in the coolant bag 41 is connected to the coolant reservoir 70 installed underground through the coolant pipe 44, thereby circulating the fluid that has cooled the solar panel 20. It is configured to be cooled.

At this time, the coolant reservoir 70 is preferably buried to a depth of about 5 ~ 10M underground to maintain the temperature of the cooling fluid is 5 ~ 15 ℃ throughout the year.

In addition, it is preferable that the cooling fluid is configured to be forced to circulate between the coolant reservoir 70 and the coolant bag 41 by using the pump 75. Of course, it is also possible to configure to have a natural circulation structure.

9 is a schematic view showing that the cooling fluid heated in the coolant bag 41 can be used as hot water or a heating facility.

That is, the cooling fluid heated in the coolant bag 41 may be transferred to a heating facility such as a home through a pipe 44, and heat efficiency of the solar panel 20 may be used for heating to maximize heat utilization efficiency. Will be.

To this end, the coolant bag 41 and the heat exchanger 81 are connected to the pipe 44 to circulate the cooling fluid, and the heat exchanger 81 is a heating boiler 82 or a hot water storage tank 83. By configuring to transfer heat to the back, it is possible to maximize the energy utilization efficiency of the solar panel.

The technical ideas described in the embodiments of the present invention as described above may be implemented independently, or may be implemented in combination with each other. In addition, the present invention has been described through the embodiments described in the drawings and detailed description of the invention, which is merely exemplary, and those skilled in the art to which the present invention pertains various modifications and equivalent other embodiments from this It is possible. Accordingly, the technical scope of the present invention should be determined by the appended claims.

1 is a perspective view showing a solar cell module with a heat radiation cooling apparatus according to a first embodiment of the present invention.

FIG. 2 is a detailed view of portion 'A' of FIG. 1.

3 is a perspective view showing a solar cell module with a heat radiation cooling apparatus according to a second embodiment of the present invention.

4 is a detailed view of a portion 'B' of FIG. 3.

FIG. 5 is a detailed view of portion 'C' of FIG. 3.

FIG. 6 is a diagram illustrating an embodiment showing a configuration for closely contacting the cooling bag of FIG. 3 to a solar panel.

7 is an exemplary view illustrating a structure in which a coolant bag and an electronic cooling device are connected in the present invention.

8 is an exemplary view showing a structure connected to the coolant bag and the underground coolant reservoir in the present invention.

9 is a schematic view showing that the present invention can be used as a hot water or a heating facility using the cooling fluid heated in the coolant bag.

Claims (13)

A solar panel which receives electricity to generate electricity; Directly attached to the solar panel to cool the solar panel, the solar cell heat dissipation cooling device comprising a heat dissipation cooling sheet comprising a plurality of cooling projections. The method according to claim 1, The cooling projection is a solar cell heat dissipation cooling device, characterized in that formed in a linear structure or a sheet-like structure. The method according to claim 1, The cooling projection is a solar cell heat dissipation cooling device, characterized in that made of a high heat transfer metal material. The method according to claim 1, The cooling projection is a solar cell heat dissipation cooling apparatus comprising a cooling liquid absorber so that evaporation is performed while cooling in the state in which the cooling liquid is absorbed. The method according to any one of claims 1 to 4, The solar cell heat dissipation cooling apparatus, the solar cell heat dissipation cooling apparatus provided on one side of the solar panel comprises a coolant bag for cooling the solar panel in a state of temporarily storing the coolant. The method according to claim 5, The coolant bag is installed to maintain a state in close contact with the solar panel by the contact means, The close contact means, the solar cell heat dissipation cooling apparatus is installed in the frame for supporting the solar panel is provided with a leaf spring to provide an elastic force in the direction in which the coolant bag is in close contact with the solar panel. The method according to claim 5, Solar cell heat dissipation cooling apparatus comprising a coolant absorber to absorb and maintain the coolant inside the coolant bag. The method according to claim 5, The coolant bag is connected to a cooling fluid circulation device, the solar cell heat dissipation cooling device, characterized in that configured to be cooled while the cooling fluid is circulated. The method according to claim 8, The cooling fluid circulation device, the solar cell heat dissipation cooling device connected to the coolant bag is characterized in that the electronic cooling device for circulating the cooling fluid. The method according to claim 8, The cooling fluid circulation device, the solar cell heat dissipation cooling device comprising a structure for circulating the cooling fluid in the coolant bag in the coolant reservoir installed in the ground. The method according to claim 8, The cooling fluid circulation device, a solar cell heat dissipation cooling apparatus comprising a heat exchanger for heat exchange with the heating boiler or hot water storage tank while the cooling liquid discharged from the coolant bag passes. A solar panel which receives electricity to generate electricity; The solar cell heat dissipation cooling apparatus, which is directly attached to the solar panel and cools the solar panel, includes a coolant absorber for cooling while evaporating the coolant while absorbing the coolant sprayed on the solar panel. The method according to claim 12, The cooling liquid absorber is a solar cell heat dissipation cooling device, characterized in that made of a porous material.

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