CN219017678U

CN219017678U - Photovoltaic module and photovoltaic system

Info

Publication number: CN219017678U
Application number: CN202223529856.7U
Authority: CN
Inventors: 卢浩杰; 陈刚
Original assignee: Shenzhen Saineng Digital Energy Technology Co ltd
Current assignee: Shenzhen Saineng Digital Energy Technology Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-05-12
Anticipated expiration: 2032-12-23

Abstract

The utility model is suitable for the technical field of photovoltaics and provides a photovoltaic module and a photovoltaic system. The photovoltaic module comprises a first glass cover plate, a glue film layer, a battery piece array, a black composite layer and a second glass cover plate which are sequentially stacked, wherein the glue film layer is adhered to the first glass cover plate and the battery piece array, the black composite layer is adhered to the battery piece array and the second glass cover plate, and a reflecting structure is formed on the black composite layer. Therefore, the arrangement of the black composite layer can effectively improve glare pollution, and meanwhile, the reflection frequency of sunlight in the photovoltaic module can be increased by the reflection structure on the black composite layer so as to improve conversion efficiency, namely, the power generation efficiency of the photovoltaic module.

Description

Photovoltaic module and photovoltaic system

Technical Field

The utility model belongs to the technical field of photovoltaics, and particularly relates to a photovoltaic module and a photovoltaic system.

Background

Along with the improvement of environmental protection consciousness, the requirements of people on energy cleaning are also increasing. Solar photovoltaic modules are being used as a renewable resource with high efficiency and no pollution, and are receiving attention from people because of being capable of directly converting light energy into electric energy. For household and industrial roofs, the white component has more light reflection, and the corresponding light pollution or glare phenomenon is better and more obvious, so that the visual effect of people is adversely affected. Therefore, a black double-glass photovoltaic module is generated so as to reduce the problem of glare pollution. The back plate glass of the component is usually black glaze grid back plate glass printed or sprayed with black glaze materials, and the grid glass can greatly increase the transmittance of front light rays and reduce the photoelectric conversion efficiency of the component.

Disclosure of Invention

The embodiment of the utility model provides a photovoltaic module and a photovoltaic system, which aim to solve the problem of low module power generation efficiency caused by less reflection times of sunlight in the photovoltaic module.

The embodiment of the utility model is realized in such a way that the photovoltaic module provided by the utility model comprises:

the solar cell comprises a first glass cover plate, a glue film layer, a cell array, a black composite layer and a second glass cover plate, wherein the first glass cover plate, the glue film layer, the cell array and the second glass cover plate are sequentially stacked, the glue film layer is adhered to the first glass cover plate and the cell array, the black composite layer is adhered to the cell array and the second glass cover plate, and a light reflecting structure is formed on the black composite layer.

Still further, the black composite layer includes a first adhesive layer, a black substrate, and a second adhesive layer, the black substrate being connected to the first adhesive layer and the second adhesive layer.

Further, the light reflecting structure is formed on the black substrate and faces one side of the battery cell array.

Still further, the black matrix includes a first surface and a second surface opposite to the first surface, the first surface is connected with the cell array, and the first surface is black.

Still further, the cell array comprises a solar cell string and a bus bar connected with the solar cell string, the black composite layer is formed with a first through hole, the second glass cover plate is formed with a second through hole, and the bus bar penetrates through the first through hole and the second through hole.

Still further, the battery piece array further comprises a tape, the number of the solar battery strings is multiple, and the tape is used for connecting the multiple solar battery strings.

Further, the cell array is formed by connecting 10-12 solar cell strings in series.

Still further, the solar cell string includes a plurality of solar cells and an interconnection bar for connecting the plurality of solar cells.

Still further, the photovoltaic module further comprises a bar code, wherein the bar code is adhered to the bus bar, and the bar code is positioned between the battery cell array and the second glass cover plate.

The utility model also provides a photovoltaic system, which comprises the photovoltaic module.

The beneficial effects achieved by the utility model are as follows: through setting up black composite layer in order to reach the problem of solving the glare pollution, the reflection of sunlight number of times in photovoltaic module can be promoted in order to promote conversion efficiency to the reflection structure that sets up on the black composite layer simultaneously, namely promotes photovoltaic module's generating efficiency.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic block diagram of a photovoltaic system provided by the present utility model;

FIG. 2 is a schematic cross-sectional view of a photovoltaic module provided by the present utility model;

FIG. 3 is a schematic partial cross-sectional view of a black composite layer provided by the present utility model;

FIG. 4 is a schematic cross-sectional view of yet another portion of a black composite layer provided by the present utility model;

fig. 5 is a schematic plan view of a battery array according to the present utility model;

FIG. 6 is a schematic plan view of a black composite layer according to the present utility model;

fig. 7 is a schematic plan view of a second glass cover plate according to the present utility model.

Description of main reference numerals:

photovoltaic system 1000, photovoltaic module 100, first glass cover plate 10, adhesive film layer 20, cell array 30, solar cell string 31, adhesive tape 32, black composite layer 40, light reflecting structure 401, first adhesive layer 41, black substrate 42, first face 421, second face 422, second adhesive layer 43, first through hole 44, second glass cover plate 50, second through hole 51.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize applications of other processes and/or usage scenarios for other materials.

According to the utility model, the black composite layer is added into the photovoltaic module to reduce the problem of glare pollution caused by the photovoltaic module, and the reflection structure arranged on the black composite layer can improve the reflection times of sunlight in the photovoltaic module to improve the conversion efficiency, namely the power generation efficiency of the photovoltaic module.

Example 1

Referring to fig. 1 to 3, a photovoltaic system 1000 according to an embodiment of the present utility model may include a photovoltaic module 100 according to an embodiment of the present utility model, where the photovoltaic module 100 includes: the first glass cover plate 10, the adhesive film layer 20, the battery piece array 30, the black composite layer 40 and the second glass cover plate 50 are sequentially stacked, the adhesive film layer 20 is used for bonding the first glass cover plate 10 and the battery piece array 30, the black composite layer 40 is used for bonding the battery piece array 30 and the second glass cover plate 50, and the black composite layer 40 is provided with a light reflecting structure 401.

In this way, the arrangement of the black composite layer 40 can effectively improve the glare pollution, and the reflective structure 401 on the black composite layer 40 can improve the reflection times of sunlight in the photovoltaic module 100 to improve the conversion efficiency, that is, the power generation efficiency of the photovoltaic module 100.

Specifically, the first glass cover plate 10 and the second glass cover plate 50 may be made of a material such as coated toughened glass or semi-toughened glass. The first glass cover plate 10 and the second glass cover plate 50 serve as the outer shell of the photovoltaic module 100, and can play a role in protecting the adhesive film layer 20, the cell array 30 and the black composite layer 40.

The adhesive film layer 20 may be made of a transparent adhesive with good light transmittance and aging resistance, for example, the adhesive film layer 20 may be made of EVA adhesive film, POE adhesive film, PVB adhesive film, EPE adhesive film, or a composite adhesive film material, which may be specifically selected according to practical situations, but is not limited thereto.

The black composite layer 40 can be connected with the cell array 30 and the second glass cover plate 50 in an adhesive manner, so that the adhesive effect inside the photovoltaic module 100 can be improved, and the delamination phenomenon can be avoided. When sunlight enters the photovoltaic module 100 through the first glass cover plate 10, the black composite layer 40 can effectively improve the problem of glare pollution of the photovoltaic module 100.

Further, the black composite layer 40 is provided with a plurality of light reflecting structures 401, and the light reflecting structures 401 are uniformly distributed on one side of the black composite layer 40, which is close to the cell array 30. The rugged structure on the side of the color composite layer 40 adjacent to the cell array 30 can be used as the light reflective structure 401. The reflective structure 401 can increase the reflection times of sunlight inside the photovoltaic module 100, and improve the light utilization rate, thereby improving the conversion efficiency of the photovoltaic module 100. The black composite layer 40 may be formed with a recess as the light reflecting structure 401, or a protrusion as the light reflecting structure 401 may be disposed on the black composite layer 40, which is not limited herein.

The conversion efficiency of a conventional photovoltaic module is 20%, and the conversion efficiency of the photovoltaic module 100 provided by some embodiments of the present utility model may be about 22.7%.

Under the high-temperature and high-pressure environment, the adhesive film layer 20 in a molten state can bond the first glass cover plate 10 and the cell array 30 into a whole, and the black composite layer 40 can be bonded with the cell array 30 and the second glass cover plate 50 to form the photovoltaic module 100. The array of battery cells 30 may convert solar energy to electrical energy, or may be sent to a battery for storage, or may propel a load for operation.

Further, in the embodiment of the present utility model, the photovoltaic system 1000 may be applied to a photovoltaic power station, for example, a ground power station, a roof power station, a water power station, etc., and may also be applied to a device or apparatus for generating power by using solar energy, for example, a user solar power source, a solar street lamp, a solar car, a solar building, etc.

Of course, it is understood that the application scenario of the photovoltaic system 1000 is not limited thereto, that is, the photovoltaic system 1000 may be applied in all fields where solar energy is required to generate electricity. Taking the photovoltaic power generation system 0 grid as an example, the photovoltaic system 1000 may include a photovoltaic array, a combiner box and an inverter, where the photovoltaic array may be plural

The array combination of the photovoltaic modules 100, for example, a plurality of photovoltaic modules 100 may form a plurality of photovoltaic arrays, the photovoltaic arrays are connected with a junction box, the junction box may junction currents generated by the photovoltaic arrays, and the junction currents flow through an inverter to be converted into alternating currents required by a utility power grid and then are connected to the utility power grid to realize solar power supply.

Example 5 second embodiment

Referring to fig. 2 and 3, in some embodiments, the black composite layer 40 may include a first adhesive layer 41, a black matrix 42, and a second adhesive layer 43, and the black matrix 42 is connected to the first adhesive layer 41 and the second adhesive layer 43.

In this way, the black composite layer 40 is connected to the battery array 0 and the second glass cover plate 50 by the first adhesive layer 41 and the second adhesive layer 43, and the arrangement of the adhesive layers on both sides of the black composite layer 40 can be greatly improved

And the bonding effect is improved, and the delamination of the photovoltaic module 100 is avoided, so that the service life of the photovoltaic module 100 is prolonged.

Specifically, the first adhesive layer 41 and the second adhesive layer 43 may be made of EVA, POE, or the like, wherein,

the materials of the first adhesive layer 41 and the second adhesive layer 43 may be the same or different, and are not limited thereto. The 5 black base material 42 can be made of PET, CPC, KPK and other materials.

It should be noted that in some embodiments, first adhesive layer 41 may be used to attach to battery array 30 and second adhesive layer 43 may be used to attach to second glass cover plate 50; in some embodiments, first adhesive layer 41 is used to connect to second glass cover plate 50 and second adhesive layer 43 is used to connect to battery array 30, without limitation.

Example III

Referring to fig. 2 and 3, in some embodiments, a light reflecting structure 401 is formed on the black substrate 42 and faces one side of the cell array 30.

Thus, when light enters the photovoltaic module 100 through the first glass cover plate 10, the light can be reflected for multiple times at the light reflecting structure 401 on the black base material 42, so that the light utilization rate of the photovoltaic module 100 is greatly improved, and the conversion efficiency of the photovoltaic module 100 is further improved to improve the power generation efficiency of the photovoltaic module 100.

Specifically, along the width direction of the photovoltaic module 100, the cross section of the light reflecting structure 401 may be triangular, as shown in fig. 3, may be semicircular, as shown in fig. 4, may be in other irregular shapes, and the like. Specifically, the selection may be made according to the actual situation, and is not limited herein.

It should be noted that, the reflective structure 401 not only can increase the reflection times of the light in the photovoltaic module 100 to increase the power generation efficiency of the photovoltaic module 100, but also can increase the contact surface between the battery array 30 and the black substrate 42, so that the bonding effect inside the photovoltaic module 100 is better and is not easy to fall off.

Example IV

Referring to fig. 2 and 3, in some embodiments, the black matrix 42 may include a first surface 421 and a second surface 422, where the second surface 422 is disposed opposite to the first surface 421, the first surface 421 is connected to the battery cell array 30, and the first surface 421 is black.

Thus, when light enters the photovoltaic module 100 through the first glass cover plate 10, the light irradiates the first surface 421 with black color, and the first surface 421 with black color can effectively improve the problem of glare pollution of the photovoltaic module 100.

It is understood that the second face 422 of the black matrix 42 is disposed toward the second glass cover plate 50. In some embodiments, the first side 421 and the second side 422 of the black matrix 42 are both black; in some embodiments, the first side 421 of the black matrix 42 is black and the second side 422 is white. In order to ensure that the black composite layer 40 can improve the problem of glare pollution of the photovoltaic module 100, the first surface 421 of the black matrix 42 needs to be ensured to be black, wherein the first surface 421 can be made black by printing or spraying.

Example five

Referring to fig. 5-7, in some embodiments, the cell array 30 may include a solar cell string 31 and a bus bar (not shown) connected to the solar cell string 31, the black composite layer 40 is formed with a first through hole 44, the second glass cover plate 50 is formed with a second through hole 51, and the bus bar is disposed through the first through hole 44 and the second through hole 51.

In this way, the bus bar on the solar cell string 31 can pass through the first through hole 44 and the second through hole 51 to be connected with other devices such as a junction box. The bus bar may be connected to the solar cell string 31 by soldering, thereby achieving conduction inside the solar cell string 31.

The bus bars may be white, silver, black, or the like, and preferably, the bus bars are black in order to more highlight the black color of the whole photovoltaic module 100 and improve the integrity of the photovoltaic module 100.

Wherein, the first through hole 44 is provided through the first adhesive layer 41, the black base material 42, and the second adhesive layer 43. The second through hole 51 is provided through the second glass cover plate 50. The number of the first through holes 44 and the second through holes 51 is the same, and the number of the first through holes 44 and the second through holes 51 may be plural, such as 2 or 3, and the like, which is not limited herein, and the plurality of first through holes 44 are disposed on the black composite layer 40 at intervals, and the plurality of second through holes 51 are disposed on the second glass cover plate 50 at intervals. In another embodiment, the number of the first through holes 44 and the second through holes 51 is 3.

Referring to fig. 5, in some embodiments, the battery array 30 may further include a plurality of adhesive tapes 32, where the adhesive tapes 32 are used to connect the plurality of solar cell strings 31.

In this way, the adhesive tape 32 can connect the solar cell strings 31 together to play a role in fixing and positioning, so as to avoid the defects of parallel sheets, broken sheets and the like of the solar cell strings 31 caused by the offset of the solar cell strings 31 in the process of assembling the photovoltaic module 100.

The solar cell strings 31 are arranged in an array, and the solar cell strings 31 can be bonded by an adhesive tape 32. The number of the solar cell strings 31 may be 4, 8, 12, 16, 24, or the like, and may be specifically selected according to practical situations.

Example six

Referring to fig. 5, in some embodiments, the cell array 30 is formed by serially connecting 10-12 solar cell strings 31. In this way, the number of the solar cell strings 31 is set within 10-12, so that the voltage generated by the cell array 30 can reach the expected value, and the situation that the voltage cannot reach the standard due to too small number of the solar cell strings 31 is avoided, and the situation that the voltage exceeds the standard and the whole volume of the photovoltaic module 100 is too large due to too large number of the solar cell strings 31 is avoided.

The solar cell strings 31 may be connected in series, in parallel, or in a combination of series and parallel to realize a current collection output, and for example, a welding strip (bus bar, interconnection bar) may be provided to connect the solar cell strings 31.

In some embodiments, the solar cell string 31 may be composed of several solar cells, which may be at least one of a PERC solar cell, a back contact solar cell, a Topcon solar cell, a HJT solar cell. Preferably, all solar cell types in the cell array 30 are selected to be the same type.

In some embodiments, the solar cell string 31 includes a plurality of solar cells and an interconnect bar for connecting the plurality of solar cells. In this manner, the interconnect strips may enable conduction within the battery cell array 30.

Specifically, the solar cell may be a half-segment solar cell, a three-segment solar cell, a multi-segment solar cell, or the like, without limitation. The half-piece solar cell, the three-piece solar cell or the multi-piece solar cell is formed by dividing and manufacturing a whole piece of solar cell along one piece of solar cell after dividing equally.

The interconnecting strips may be connected with the solar cells under high temperature conditions to form a solar cell string 31 such that conduction between the solar cells is achieved. In some embodiments, the solar cell string 31 has a length of 820mm to 825mm.

The interconnection strips may be white, silver or black, so that the overall appearance of the photovoltaic module 100 is more highlighted and the overall appearance of the photovoltaic module 100 is improved.

Example seven

Further, the photovoltaic module 100 further includes a bar code (not shown) attached to the bus bar, the bar code being located between the battery cell array 30 and the second glass cover plate 50. In this way, a user may obtain relevant performance information of the current photovoltaic module 100 through the barcode.

In some embodiments, the bar code may be made of PET, PC, PVC or the like, without limitation. The color of the bar code can be white, silver, black, or colorful.

Wherein the bar code may be attached to the battery cell array 30 and the black composite layer 40 by means of adhesive. It should be noted that, the information about the photovoltaic module 100 on the barcode may be embodied by a two-dimensional code, a barcode, a serial code, or the like, which is not limited herein. In order to better embody the black photovoltaic module 100, the bar code color is selected to be black.

In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a photovoltaic module, its characterized in that, including the first glass apron, glued membrane layer, battery piece array, black composite layer and the second glass apron of range upon range of setting in proper order, glued membrane layer bonds first glass apron with battery piece array, black composite layer bonds battery piece array with the second glass apron, be formed with reflecting structure on the black composite layer.

2. The photovoltaic module of claim 1, wherein the black composite layer comprises a first adhesive layer, a black substrate, and a second adhesive layer, the black substrate being coupled to the first adhesive layer and the second adhesive layer.

3. The photovoltaic module of claim 2, wherein the light reflecting structure is formed on the black substrate and toward a side of the array of cells.

4. The photovoltaic module of claim 2, wherein the black matrix comprises a first face and a second face disposed opposite the first face, the first face is connected to the array of cells, and the first face is black.

5. The photovoltaic module of claim 1, wherein the array of cells includes a string of solar cells and a bus bar connected to the string of solar cells, the black composite layer is formed with a first through hole, the second glass cover plate is formed with a second through hole, and the bus bar is threaded through the first through hole and the second through hole.

6. The photovoltaic module of claim 5, wherein the array of cells further comprises a tape, the number of solar cell strings being a plurality, the tape being used to connect a plurality of the solar cell strings.

7. The photovoltaic module of claim 5, wherein the array of cells is formed from 10-12 strings of solar cells connected in series.

8. The photovoltaic module of claim 5, wherein the solar cell string comprises a plurality of solar cells and an interconnect bar for connecting the plurality of solar cells.

9. The photovoltaic module of claim 5, further comprising a bar code affixed to the bus bar, the bar code located between the array of cells and the second glass cover plate.

10. A photovoltaic system comprising the photovoltaic module of any one of claims 1 to 9.