CN217428082U

CN217428082U - Concentrating photovoltaic module and system composed of same

Info

Publication number: CN217428082U
Application number: CN202220734032.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhongke Regu Beijing Environmental Protection Technology Co ltd
Current assignee: Zhongke Regu Beijing Environmental Protection Technology Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-09-13
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a concentrating photovoltaic module and a system composed of the same, which comprises a module box and a radiator; the module box comprises a front panel, side plates and a back plate, wherein the front panel is arranged at the end part of the back plate, the side plates are arranged at the side part of the back plate, and the longitudinal section formed by the front panel, the side plates and the back plate is an isosceles trapezoid; the radiator comprises an evaporator and a condenser, the evaporator and the condenser are connected through a circulating pipeline, the evaporator is arranged on a bottom plate of the back plate, and the condenser is arranged on an upper inclined plate of the back plate; the circulating pipeline comprises a liquid pipeline and a steam pipeline, one end of the evaporator is connected with the condenser through the liquid pipeline, and the other end of the evaporator is connected with the condenser through the steam pipeline. The utility model provides a pair of spotlight photovoltaic module and system of constituteing thereof, its is rational in infrastructure, and it is convenient to be under construction, can effectively dispel the heat, improves the generating efficiency, ensures the reliability of solar cell life-span and use.

Description

Concentrating photovoltaic module and system composed of same

Technical Field

The utility model belongs to the technical field of the spotlight photovoltaic, a system of spotlight photovoltaic module and constitution is related to.

Background

Concentrated Photovoltaics (CPV) refers to a technology of directly converting Concentrated sunlight into electric energy through a photovoltaic cell with high conversion efficiency, sunlight is Concentrated and irradiated on the surface of the photovoltaic cell through a concentrator to generate current, only 20-30% of light energy is converted into electric energy in the process, the rest energy is converted into heat energy, the heat energy is transmitted out on a very small heat dissipation area through a high-intensity heat transfer process, the service life of the photovoltaic power generation cell is damaged through the high-intensity heat transfer process, and the operation safety and reliability of a Concentrated photovoltaic system are influenced significantly.

Therefore, the performance of the radiator plays a crucial role in reducing the temperature of the concentrating photovoltaic cell, and in a high-power concentrating photovoltaic system, an active cooling radiator and a passive cooling radiator are arranged, wherein the active cooling radiator takes away heat generated when the concentrating photovoltaic cell operates through flowing water or other media, so that the temperature of the concentrating photovoltaic cell is reduced. And the passive cooling radiator directly radiates the heat generated by the concentrating photovoltaic cell to the atmosphere through the radiator. The active cooling mode can better reduce the working temperature of the photovoltaic cell, however, the reliability of the cooling system is the biggest problem of the active cooling, and once the cooling system fails, the concentrated photovoltaic cell can be damaged due to the overhigh working temperature. In comparison, the reliability of passive cooling is high, and is one of the main ways to reduce the operating temperature of the concentrating photovoltaic cell

The common passive cooling radiator is an air cooler, natural convection is adopted, a copper or aluminum heat dissipation bottom plate can be additionally arranged on the back of the battery, fins can be additionally arranged to increase the heat exchange effect, natural cooling installation is convenient, the manufacturing cost is low, but the cooling effect is limited, for example, a concentrating photovoltaic solar radiator disclosed in Chinese patent document CN104283509A, forced convection can also be adopted, an air flow channel needs to be arranged on the back of the battery, a fan is arranged in the flow channel, the forced flow cooling effect is better than the natural convection, and extra electric energy can be consumed due to the addition of the fan.

The common active cooling is water cooling, for example, in a water-cooled concentrating photovoltaic solar power plant disclosed in chinese patent document CN102647115A, a water cooling system mainly comprises a heat exchanger, a water tank and a valve, the structural form of the heat exchanger includes a plate-tube type, a flow-channel type, a plate-built-in flow-channel type and a water tank base type, the plate-tube type is designed according to the development of a solar flat plate collector, and the structural form can better solve the leakage problem of a cooling working medium and maintain good insulation with a photovoltaic cell; the runner type is similar to air runner heat exchange, so that the contact area of a cooling working medium and the photovoltaic cell is greatly increased, and the heat exchange effect is enhanced, but the structural form has the problem of leakage of the working medium, and the insulation characteristic of the photovoltaic cell is poor; the water tank base type is characterized in that a photovoltaic cell is directly connected with a water tank with an inclined plane, the water tank is used as a container for cooling working media and a base of a system, but generally, the whole concentrating photovoltaic array uses a water-cooling radiator system, the water-cooling radiator system cannot be flexibly arranged according to the form of the concentrating photovoltaic module, and when a water-cooling module of some concentrating photovoltaic modules breaks down, the heat dissipation of the whole concentrating photovoltaic array can be influenced.

In addition, there are some new heat dissipation technologies, the evaporation end is a flat heat pipe radiator, and the photovoltaic cell is connected with the flat evaporation end, for example, a heat pipe heat dissipation system applied to concentrating photovoltaic disclosed in chinese patent document CN102097515A, but the processing technology requirement of the evaporation end is high, the heat exchange process is short, the efficiency is low, and the water cooling method of the microchannel structure, because of the special structure, the flow resistance of the fluid in the microchannel is large, the power consumption of the required external pump is large, the processing difficulty of the microchannel heat dissipation structure is large, the cost is high, and the liquid immersion heat dissipation technology of immersing the photovoltaic cell in the liquid, but puts higher requirements on the structure of the photovoltaic cell and the liquid storage structure.

In the prior art, the change of tracking type spotlight gallium arsenide photovoltaic power generation system along with the solar altitude angle, the evaporimeter and the condenser of air-cooled type loop heat pipe radiator are located the module case back, the module case back is whole to be a plane, so the module case has condenser position ability slightly to be higher than the evaporimeter heat-absorbing surface under the slope condition very greatly for ground, nevertheless the solar altitude angle is very high in summer, when the module case is parallel with ground, the condenser at the module case back can be at same horizontal plane with the heat-absorbing surface almost, or the radiator is less than the heat-absorbing surface, lead to evaporimeter heat-absorbing surface fluid infusion not enough, or dry phenomenon appears, make the temperature control radiator take place to become invalid.

Therefore, there is a need to design a concentrated photovoltaic module and a system composed of the same to solve the existing technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned technical problem, the system of a spotlight photovoltaic module and constitution that provides, its is rational in infrastructure, and it is convenient to be under construction, can effectively dispel the heat, improves the generating efficiency, ensures the reliability of solar cell life-span and use.

In order to solve the technical problem, the utility model provides a concentrating photovoltaic module and a system composed of the same, which comprises a module box and a radiator; the module box comprises a front panel, side plates and a back plate, wherein the front panel is arranged at the end part of the back plate, the side plates are arranged at the side part of the back plate, and the longitudinal section formed by the front panel, the side plates and the back plate is an isosceles trapezoid; the radiator comprises an evaporator and a condenser, the evaporator and the condenser are connected through a circulating pipeline, the evaporator is arranged on a bottom plate of the back plate, and the condenser is arranged on an upper inclined plate of the back plate; the circulating pipeline comprises a liquid pipeline and a steam pipeline, one end of the evaporator is connected with the condenser through the liquid pipeline, and the other end of the evaporator is connected with the condenser through the steam pipeline.

As a preferred embodiment, the back plate further comprises a lower inclined plate, and the bottom plate, the upper inclined plate and the lower inclined plate are integrally formed by bending.

In a preferred embodiment, the upper inclined plate is provided with an air hole.

In a preferred embodiment, the front panel is a lens, and a solar cell is disposed inside the module box and is mounted at a corresponding focal point of the front panel.

In a preferred embodiment, the solar cell is mounted on a bottom plate of the back plate, the bottom plate is provided with a through hole, and a heat conduction plate of the solar cell is mounted on the through hole and is in close contact with the evaporator.

As a preferred embodiment, a secondary condenser is arranged inside the module box, and the secondary condenser is an inverted glass pyramid and is arranged at the upper part of the solar cell.

As a preferred embodiment, an included angle between a pipeline of the liquid pipeline connected to the condenser and a pipeline of the liquid pipeline connected to the evaporator is equal to an included angle between the upper inclined plate and the bottom plate.

As a preferred embodiment, the junction of the top cover of the evaporator and the steam outlet is chamfered.

And simultaneously, the utility model also discloses a spotlight photovoltaic system, it includes solar energy tracking mechanism, truss and higher authority spotlight photovoltaic module, solar energy tracking mechanism includes base, pillar, vertical rotation module and horizontal rotation module, the pillar set up in the base, horizontal rotation module set up in the top of pillar, vertical rotation module is connected between truss and horizontal rotation module, spotlight photovoltaic module set up in on the truss.

As a preferred embodiment, the truss is a rectangular frame body formed by splicing and welding square pipes, and a plurality of concentrating photovoltaic modules are arranged on the truss.

The utility model discloses beneficial effect:

the utility model provides a pair of spotlight photovoltaic module and system of constituteing thereof, its is rational in infrastructure, and the construction is convenient, can effectively dispel the heat, improves the generating efficiency, ensures solar cell life-span and the reliability of using.

Drawings

The above-mentioned advantages of the invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and not by way of limitation, in which:

fig. 1 is a schematic structural view of a concentrating photovoltaic module according to the present invention;

fig. 2 is a side view of the concentrating photovoltaic module of the present invention;

fig. 3 is a longitudinal sectional view of the concentrating photovoltaic module according to the present invention;

fig. 4 is a schematic view of the structure of the heat sink of the present invention;

fig. 5 is a cross-sectional view of an evaporator according to the present invention;

fig. 6 is a schematic structural diagram of a concentrating photovoltaic system according to the present invention;

fig. 7 is a front view of a concentrated photovoltaic system of the present invention.

In the drawings, the reference numerals denote the following components:

1000. a concentrating photovoltaic system;

100. a concentrating photovoltaic module;

10. a module box; 11. a front panel; 12. a side plate;

13. a back plate; 13a, a bottom plate; 13b, an upper inclined plate; 13c, a lower sloping plate; 13d, air holes;

20. a heat sink;

21. an evaporator; 21a. a top cover; a wick; 21c, a steam outlet; 21d, a liquid inlet pipe;

22. a condenser;

23. a circulation line; a liquid line; a steam line;

30. a solar cell;

40. a secondary condenser;

200. a solar tracking mechanism;

210. a base; 220. a pillar; 230. a vertical rotation module; 240. a horizontal rotation module;

300. a truss.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It is noted that the drawings are not necessarily to the same scale, emphasis instead being placed upon clearly illustrating the structure of various elements of embodiments of the present invention. Like reference numerals are used to denote like parts.

The structural schematic diagram of a concentrating photovoltaic module described herein, as shown in fig. 1, includes a module box 10 and a heat sink 20. The module box 10 comprises a front panel 11, a side panel 12 and a back panel 13, wherein the front panel 11 is arranged at the end part of the back panel 13, the side panel 12 is arranged at the side part of the back panel 13, and the longitudinal section formed by the front panel 11, the side panel 12 and the back panel is isosceles trapezoid.

Further, the radiator 20 includes an evaporator 21 and a condenser 22, as shown in fig. 2, which are connected by a circulation line 23, the evaporator 21 is disposed on the bottom plate 13a of the back plate 13, and the condenser 22 is disposed on the upper inclined plate 13b of the back plate 13; the circulation line 23 includes a liquid line 23a and a vapor line 23b, and as shown in fig. 4, one end of the evaporator 21 is connected to the condenser 22 through the liquid line 23a, and the other end of the evaporator 21 is connected to the condenser 22 through the vapor line 23b. With this arrangement, each module case 10 can be provided with a separate radiator 20, and even if the module cases 10 are stacked on a truss, the installation of the radiators 20 is not affected.

Further, the back plate 13 further includes a lower inclined plate 13c, and as shown in fig. 2, the bottom plate 13a, the upper inclined plate 13b, and the lower inclined plate 13c are integrally formed by bending. By such arrangement, water leakage at the joint of the upper inclined plate 13b and the bottom plate 13a can be prevented, and the influence of a large amount of water entering the vicinity of the bottom plate 13a inside the module box 10 on the normal operation of the photovoltaic cell can be avoided.

The above-described structure of the module case 10 serves the following functions: firstly, reflection light collection is facilitated, secondly, the upper sloping plate 13b facilitates drainage, and further, when a plurality of module boxes 10 are arranged on a truss to form an array, a space formed between the module boxes facilitates installation of the condensing fins of the radiator 20.

In the embodiment shown in fig. 1, the upper sloping plate 13b is provided with air holes 13d. The ventilation holes 13d formed in the upper inclined plate 13b allow steam generated by the sunlight inside the module case 10 to be discharged.

As another embodiment of the present invention, the front panel 11 is a lens, such as a fresnel lens. The solar cell 30 is disposed inside the module case 10, and as shown in fig. 3, the solar cell 30 is installed at a corresponding focal point of the front panel 11.

Further, the solar cell 30 is attached to the bottom plate 13a of the back sheet 13, the bottom plate 13a is provided with a through hole, and the heat conductive plate of the solar cell 30 is attached to the through hole and is in close contact with the evaporator 21.

In the embodiment shown in fig. 3, the inside of the module case 10 is provided with a secondary light collector 40, and the secondary light collector 40 is an inverted glass pyramid which is disposed on the upper portion of the solar cell 30. The light is refracted from the upper bottom surface of the secondary condenser 40 into the total reflection type secondary condenser 40, and is incident to the lower bottom surface through total reflection of both side surfaces. Since the area of the upper bottom surface is larger than that of the lower bottom surface, the secondary condenser 40 can perform a secondary condensing function. The secondary condenser 40 further corrects and condenses the light so that the light is not deflected by an error of the tracking device and continues to be irradiated to the solar cell 30.

Fig. 4 is a schematic structural diagram of the heat sink 20 of the present invention, and an included angle between a pipeline of the liquid pipeline 23a connected to the condenser 22 and a pipeline of the liquid pipeline 23a connected to the evaporator 21 is equal to an included angle between the upper inclined plate 13b and the bottom plate 13a. Likewise, the angle between the line of the steam line 23b connected to the condenser 22 and the line of the steam line 23b connected to the evaporator 21 is equal to the angle between the upper sloping plate 13b and the bottom plate 13a.

Evaporator 21, condenser 22, circulation pipeline 23 and module case 10's above-mentioned specific structure sets up, make radiator 20 back of the body on the back of module case, even the very high summer of solar altitude angle, its condenser 22 position is higher than evaporator 21's heat-absorbing surface far away, the design can guarantee that the heat-absorbing surface has sufficient liquid phase to supply like this, the risk of radiator performance deterioration that has avoided the change of the all the year round solar altitude angle to bring, guarantee that solar cell hot side temperature is less than 45 ℃, solar cell generating efficiency is higher than 35%, even better.

Fig. 5 is a cross-sectional view of the evaporator 21, where the aluminum shell of the evaporator 21 absorbs heat from the solar cell, the liquid working medium in the wick 21b of the evaporator 21 absorbs heat to be evaporated into steam, the steam is discharged from the steam pipeline 23b to enter the heat pipes in the fins of the condenser 22 to be condensed, and the condensed liquid working medium is connected to the liquid pipeline 23a from the heat pipes in the fins and circulated into the evaporator 21 through the liquid inlet pipe 21d to be absorbed by the wick 21b, thereby completing the loop circulation. The junction of the top cover 21a of the evaporator 21 and the steam outlet 21c is chamfered. So set up, can reduce the vortex that steam formed at the export kneck, reduce steam pressure, improved stability and efficiency.

And simultaneously, the utility model also discloses a spotlight photovoltaic system, it includes solar tracking mechanism 200, truss 300 and the higher authority spotlight photovoltaic module 100, as shown in fig. 6 and fig. 7, solar tracking mechanism 200 includes base 210, pillar 220, vertical rotation module 230 and horizontal rotation module 240, pillar 220 set up in base 210, horizontal rotation module 240 set up in the top of pillar 220, vertical rotation module 230 is connected between truss 300 and horizontal rotation module 240, spotlight photovoltaic module 100 set up in on the truss 300.

Further, the truss 300 is a rectangular frame body formed by splicing and welding square pipes, and the plurality of concentrating photovoltaic modules 100 are arranged on the truss 300.

Compare in prior art's shortcoming and not enough, the utility model provides a pair of spotlight photovoltaic module and system of constituteing thereof, its is rational in infrastructure, and the construction is convenient, can effectively dispel the heat, improves the generating efficiency, ensures the reliability of solar cell life-span and use.

The present invention is not limited to the above embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is included in the technical solution that is the same as or similar to the present invention.

Claims

1. A concentrated photovoltaic module, characterized by comprising a module case (10) and a heat sink (20); the module box (10) comprises a front panel (11), side plates (12) and a back plate (13), wherein the front panel (11) is arranged at the end part of the back plate (13), the side plates (12) are arranged at the side part of the back plate (13), and the longitudinal sections formed by the front panel (11), the side plates (12) and the back plate (13) are isosceles trapezoids; the radiator (20) comprises an evaporator (21) and a condenser (22), the evaporator (21) and the condenser (22) are connected through a circulating pipeline (23), the evaporator (21) is arranged on a bottom plate (13a) of the back plate (13), and the condenser (22) is arranged on an upper inclined plate (13b) of the back plate (13); circulation pipeline (23) include liquid pipeline (23a) and steam pipeline (23b), the one end of evaporimeter (21) is passed through liquid pipeline (23a) and is connected with condenser (22), the other end of evaporimeter (21) is passed through steam pipeline (23b) and is connected with condenser (22).

2. The concentrating photovoltaic module according to claim 1, wherein the back plate (13) further comprises a lower sloping plate (13c), and the bottom plate (13a), the upper sloping plate (13b) and the lower sloping plate (13c) are integrally formed by bending.

3. Concentrating photovoltaic module according to claim 1, characterized in that the upper sloping plate (13b) is provided with ventilation holes (13 d).

4. The concentrating photovoltaic module according to claim 1, wherein the front panel (11) is a lens, the module case (10) is internally provided with a solar cell (30), and the solar cell (30) is installed at a corresponding focus of the front panel (11).

5. Concentrating photovoltaic module according to claim 4, characterized in that the solar cell (30) is mounted on a base plate (13a) of the backsheet (13), the base plate (13a) being provided with a through hole, the heat-conducting plate of the solar cell (30) being mounted in the through hole and in close contact with the evaporator (21).

6. Concentrating photovoltaic module according to claim 4, characterized in that the interior of the module box (10) is provided with a secondary concentrator (40), the secondary concentrator (40) being an inverted glass pyramid, which is arranged on the upper part of the solar cell (30).

7. Concentrating photovoltaic module according to claim 1, characterized in that the angle between the line of the liquid line (23a) connected to the condenser (22) and the line of the liquid line (23a) connected to the evaporator (21) is equal to the angle between the upper sloping plate (13b) and the bottom plate (13 a).

8. Concentrating photovoltaic module according to claim 1, characterized in that the junction of the top cover of the evaporator (21) with the steam outlet is chamfered.

9. Concentrating photovoltaic system, comprising a solar tracking mechanism (200), a truss (300) and a concentrating photovoltaic module (100) according to any one of claims 1 to 8, wherein the solar tracking mechanism (200) comprises a base (210), a pillar (220), a vertical rotation module (230) and a horizontal rotation module (240), the pillar (220) is arranged on the base (210), the horizontal rotation module (240) is arranged on the top of the pillar (220), the vertical rotation module (230) is connected between the truss (300) and the horizontal rotation module (240), and the concentrating photovoltaic module (100) is arranged on the truss (300).

10. The concentrating photovoltaic system according to claim 9, wherein the truss (300) is a square tube welded rectangular frame, and the plurality of concentrating photovoltaic modules (100) are arranged on the truss (300).