Solar cell device

Abstract

The utility model provides a solar cell device. The solar cell device comprises a plurality of battery packs and a mounting rack, and a gap is formed between two adjacent battery packs. The mounting rack comprises a cross beam and a frame. The cross beams cover the interval between the two adjacent battery packs and are overlapped with part of the battery packs, the overlapping width of the cross beams and the battery packs does not exceed one third of the width of the battery packs, and the arrangement mode of the cross beams reduces the area of the battery packs shielded by the cross beams, that is, the maximum shielding area of single battery pieces in the battery packs is reduced; therefore, the light receiving area of the back surface of the battery pack is increased, namely, the double-sided rate of the battery pack is improved, the battery pack can be irradiated by more sunlight, the light energy absorption rate and conversion rate of the battery pack are increased, the generating capacity of the battery pack is improved, the economic benefit of a product is improved, and more potential is provided for energy utilization.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a solar cell device. Background Art

[0002] At present, photovoltaic modules are divided into two categories: single-sided photovoltaic modules and double-sided photovoltaic modules. Single-sided photovoltaic modules can only use one side of the sun, and cannot use the reflection and scattering effects of the sun. Double-sided photovoltaic modules can absorb reflected and scattered light from the sky, the ground and the surrounding environment, thereby reducing energy waste. Depending on the ground reflection conditions, the power generation gain is between 5% and 20%. During the installation process of double-sided photovoltaic modules, the horizontal bar on the back will block part of the battery, thereby affecting the power generation efficiency of the photovoltaic system. Utility Model Content

[0003] The purpose of the present application is to provide a solar cell device with high light energy absorption rate and conversion rate.

[0004] To achieve the above-mentioned purpose, the present application provides a solar cell device, which includes: a plurality of battery groups, the plurality of battery groups are arranged in sequence along a first direction, and there is a gap between two adjacent battery groups; and a mounting frame, the mounting frame includes a crossbeam and an annular frame, the two ends of the crossbeam are respectively connected to the frame and extend along a second direction, the first direction intersects with the second direction, the battery group is installed on the frame, in a direction perpendicular to the backlight surface of the battery group, the crossbeam covers the gap between two adjacent battery groups and overlaps with part of the battery group, and in the first direction, the overlapping width of the crossbeam and the battery group does not exceed one third of the width of the battery group.

[0005] The solar cell device as described above, wherein in the length direction of the crossbeam, the crossbeam includes a first portion and a second portion, and in the first direction, the width of the first portion is smaller than the width of the second portion.

[0006] In the solar cell device as described above, the crossbeam includes a plurality of the first parts and a plurality of the second parts, and the first parts and the second parts are alternately arranged in sequence.

[0007] In the solar cell device as described above, in a direction perpendicular to the backlight surface of the battery pack, the beam is provided with a through hole penetrating therethrough.

[0008] The solar cell device as described above, wherein a first light reflecting layer is provided on the outer surface of the crossbeam.

[0009] The solar cell device as described above, wherein a gap is provided between the beam and the battery group in a direction perpendicular to the backlight surface of the battery group.

[0010] The solar cell device as described above, wherein the solar cell device comprises: a transparent buffer pad, the transparent buffer pad is located in the gap and supported between the crossbeam and the battery group, and the transparent buffer pad extends along the second direction.

[0011] In the solar cell device as described above, the crossbeams overlap with two adjacent battery groups respectively.

[0012] The solar cell device as described above, wherein in the first direction, the overlapping widths of the cross beam and two adjacent battery groups are equal.

[0013] In the solar cell device as described above, a second light reflecting layer is provided on the outer surface of the frame.

[0014] Compared with the prior art, the above technical solution has the following advantages:

[0015] The crossbeam covers the interval between two adjacent battery packs and overlaps with part of the battery pack. The overlapping width of the crossbeam and the battery pack does not exceed one-third of the width of the battery pack, thereby reducing the area of ​​the battery pack blocked by the crossbeam, that is, reducing the maximum blocking area of ​​a single battery cell in the battery pack, thereby increasing the light-receiving area on the back of the battery pack, that is, improving the bifaciality of the battery pack, allowing the battery pack to receive more sunlight, thereby increasing the battery pack's absorption rate and conversion rate of light energy, thereby increasing the power generation of the battery pack, improving the economic benefits of the product, and providing more potential for energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are only intended to illustrate and explain the present application, and do not limit the scope of the present application.

[0017] Figure 1 is a schematic diagram of the main structure of the solar cell device described in the present application;

[0018] Figure 2 yes Figure 1 A rear structural schematic diagram of a first embodiment of a solar cell device is shown;

[0019] Figure 3 yes Figure 1 A rear structural schematic diagram of a second embodiment of a solar cell device is shown;

[0020] Figure 4 yes Figure 1 A rear structural schematic diagram of a third embodiment of a solar cell device is shown;

[0021] Figure 5 yes Figure 1 A schematic diagram of a partial structure of the fourth embodiment of the solar cell device;

[0022] Figure 6 yes Figure 1 A schematic diagram of a partial structure of the fifth embodiment of the solar cell device;

[0023] Figure 7 yes Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0024] Description of Figure Numbers:

[0025] 11. battery pack; 111. battery cell; 12. interval;

[0026] 20. mounting frame; 21. crossbeam; 211. first part; 212. second part; 22. frame; 23. through hole;

[0027] 30. Gap;

[0028] 40. Transparent cushion. DETAILED DESCRIPTION

[0029] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0030] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0031] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The following discussion provides multiple embodiments of the present application. Although each embodiment represents a single combination of the application, different embodiments of the present application can be replaced or combined, so the present application can also be considered to include all possible combinations of the same and / or different embodiments recorded. Therefore, if one embodiment includes A, B, C, and another embodiment includes a combination of B and D, then the present application should also be considered to include an embodiment containing one or more of all other possible combinations of A, B, C, D, although the embodiment may not be clearly recorded in the following text. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0032] The solar cell device provided in the present application includes: a plurality of battery groups 11 and a mounting frame 20 .

[0033] The plurality of battery groups 11 are sequentially arranged along the first direction L1, and there is a gap 12 between two adjacent battery groups 11. Specifically, each battery group 11 includes a plurality of battery cells 111 sequentially arranged along the second direction L2.

[0034] The mounting frame 20 includes a crossbeam 21 and an annular frame 22 .

[0035] Both ends of the beam 21 are connected to the frame 22 respectively, and extend along the second direction L2. The first direction L1 intersects with the second direction L2.

[0036] The battery pack 11 is mounted on the frame 22. In a direction perpendicular to the backlight surface of the battery pack 11 (battery cell 111), the beam 21 covers the gap 12 between two adjacent battery packs 11 and overlaps with part of the battery packs 11 (the beam 21 overlaps with at least one battery pack 11). In a first direction L1, the overlapping width of the beam 21 and the battery pack 11 does not exceed one third of the width of the battery pack 11; or, the overlapping width of the beam 21 and the battery pack 11 does not exceed half of the width of the battery pack 11.

[0037] In the solar cell device provided in the present application, the cross beam 21 covers the interval 12 between two adjacent battery groups 11, thereby reducing the area of ​​the battery group 11 blocked by the cross beam 21, that is, reducing the maximum blocking area of ​​a single battery cell 111 in the battery group 11, thereby increasing the light-receiving area on the back of the battery group 11, that is, improving the bifaciality of the battery group 11, so that the battery group 11 can be exposed to more sunlight, thereby increasing the absorption rate and conversion rate of light energy by the battery group 11, so as to increase the power generation of the battery group 11, that is, improving the economic benefits of the product, and providing more potential for energy utilization.

[0038] In addition, at the edge of the battery pack 11 (battery cell 111), there is usually an area of ​​a certain width that does not generate electricity or has a low power generation efficiency; and the main power generation part of the battery pack 11 (battery cell 111) is the middle area, so the larger the area of ​​the middle area exposed to sunlight, the more electricity can be generated. In the above scheme, the crossbeam 21 overlaps with part of the battery pack 11, and the overlapping width of the crossbeam 21 and the battery pack 11 does not exceed one-third of the width of the battery pack 11. The setting position of the crossbeam 21 mainly covers the edge of the battery pack 11, that is, the crossbeam 21 does not block the middle area of ​​the battery pack 11 (battery cell 111), thereby effectively improving the absorption rate and conversion rate of light energy by the battery pack 11, so as to increase the power generation of the battery pack 11, thereby improving the economic benefits of the product and providing more potential for energy utilization.

[0039] In the length direction of the cross beam 21 , the cross beam 21 includes a first portion 211 and a second portion 212 . In the first direction L1 , the width of the first portion 211 is smaller than the width of the second portion 212 .

[0040] The arrangement of the above structure forms a gap on the cross beam 21, so that light can pass through the gap to irradiate the battery pack 11, further reducing the area of ​​the battery pack 11 blocked by the cross beam 21, that is, further reducing the maximum blocking area of ​​the single battery cell 111 in the battery pack 11, thereby further increasing the light-receiving area on the back of the battery pack 11, that is, further improving the bifaciality of the battery pack 11, so that the battery pack 11 can be further exposed to more sunlight, thereby further increasing the absorption rate and conversion rate of light energy by the battery pack 11, so as to further improve the power generation of the battery pack 11, that is, further improving the economic benefits of the product, and providing more potential for energy utilization.

[0041] In a specific embodiment of the present application, the crossbeam 21 includes a plurality of first portions 211 and a plurality of second portions 212, and the first portions 211 and the second portions 212 are alternately arranged in sequence. Specifically, in the first direction, the lengths of the first portions 211 and the second portions 212 are equal.

[0042] The first part 211 and the second part 212 are arranged alternately. During the stress-bearing process of the beam 21, the force can be more evenly distributed to various positions of the beam 21, reducing the risk of local stress concentration, and increasing the stability and firmness of the overall structure of the beam 21, thereby improving the reliability of the product.

[0043] In one embodiment of the present application, a through hole 23 is provided on the beam 21 in a direction perpendicular to the backlight surface of the battery pack 11 (battery cell 111 ) and passes through the beam 21 .

[0044] Light can be irradiated onto the battery pack 11 through the through hole 23, further reducing the area of ​​the battery pack 11 blocked by the cross beam 21, that is, further reducing the maximum blocking area of ​​the single battery cell 111 in the battery pack 11, thereby further increasing the light-receiving area on the back of the battery pack 11, that is, further improving the double-sidedness of the battery pack 11, so that the battery pack 11 can be further exposed to more sunlight, thereby further increasing the absorption rate and conversion rate of light energy by the battery pack 11, so as to further improve the power generation of the battery pack 11, that is, further improving the economic benefits of the product, and providing more potential for energy utilization.

[0045] In one embodiment of the present application, a first light reflecting layer is provided on the outer surface of the beam.

[0046] After the light hits the beam, it is reflected by the first reflective layer onto the battery cell, reducing the amount of light blocked by the beam, thereby further increasing the light receiving rate of the battery cell, thereby improving the utilization rate of light, and further increasing the battery pack's absorption rate and conversion rate of light energy, thereby increasing the power generation of the battery pack, that is, improving the economic benefits of the product and providing more potential for energy utilization.

[0047] In one embodiment of the present application, in a direction perpendicular to the backlight surface of the battery pack 11 (battery cell 111 ), a gap 30 is provided between the beam 21 and the battery pack 11 .

[0048] Light can be irradiated onto the battery pack 11 (battery cell 111) from the gap 30, thereby increasing the light receiving rate of the battery pack 11 (battery cell 111) and reducing the amount of light blocked by the beam 21 to improve the utilization rate of light, thereby increasing the absorption rate and conversion rate of light energy by the battery pack 11 to increase the power generation of the battery pack 11, improve the economic benefits of the product, and provide more potential for energy utilization.

[0049] In one embodiment of the present application, the solar cell device includes: a transparent buffer pad 40 .

[0050] The transparent buffer pad 40 is located in the gap 30 and supported between the crossbeam 21 and the battery pack 11. The transparent buffer pad 40 extends along the second direction L2. Specifically, in the first direction L1, the width of the transparent buffer pad 40 is not greater than the width of the crossbeam 21. Specifically, the transparent buffer pad needs to have good thermal conductivity.

[0051] The crossbeam 21 supports the battery pack 11 through the transparent buffer pad 40, so that the battery pack 11 is better fixed on the mounting frame 20, that is, the stability and firmness of the fixation of the battery pack 11 are ensured, thereby improving the reliability of the product.

[0052] In addition, light can pass through the transparent buffer pad 40 and irradiate the battery pack 11 (battery cell 111), thereby ensuring the light receiving rate of the battery pack 11 (battery cell 111) to ensure the light utilization rate, and then ensure the absorption rate and conversion rate of light energy by the battery pack 11 to ensure the power generation of the battery pack 11, ensure the economic benefits of the product, and provide more potential for energy utilization.

[0053] In one embodiment of the present application, the cross beam 21 overlaps two adjacent battery groups 11 respectively.

[0054] The setting position of the above-mentioned beam 21 ensures that the beam 21 has a large width, thereby ensuring that the beam 21 has a large mechanical strength, so that the beam 21 is not easily damaged or fails during use, and can extend the service life of the beam 21, that is, improve the reliability of the beam 21, thereby making it easier for the solar cell device to adapt to different working environments and requirements and have a wider range of application scenarios.

[0055] In addition, the cross beam 21 is arranged in such a position that the cross beam 21 covers the edge of the battery pack 11, that is, the cross beam 21 does not block the middle area of ​​the battery pack 11 (battery cell 111), thereby effectively improving the absorption rate and conversion rate of light energy by the battery pack 11, thereby increasing the power generation of the battery pack 11, thereby improving the economic benefits of the product and providing more potential for energy utilization.

[0056] In one embodiment of the present application, in the first direction L1 , the overlapping widths of the beam 21 and two adjacent battery groups 11 are equal.

[0057] The cross beam 21 is arranged at a position such that the currents generated by the battery groups 11 (battery cells 111) in two adjacent battery groups 11 are the same, so as to reduce the difference between the currents generated by each battery group 11 (battery cell 111) in the battery group 11, even if the currents of each battery group 11 (battery cell 111) product are basically the same, thereby reducing the probability of current mismatch, improving the stability of the battery group 11, and enabling the battery group 11 to make more full use of solar energy, thereby improving the conversion efficiency of the battery group 11 and increasing the power generation.

[0058] In one embodiment of the present application, a second light reflecting layer is provided on the outer surface of the frame.

[0059] After the light hits the frame, it is reflected by the second reflective layer onto the battery cell, thereby further increasing the light receiving rate of the battery cell, thereby improving the light utilization rate, and further increasing the battery pack's absorption rate and conversion rate of light energy, thereby increasing the battery pack's power generation, improving the product's economic benefits, and providing more potential for energy utilization.

[0060] In the description of the present application, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0061] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. The term "plurality" refers to two or more, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements can be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A solar cell device, characterized in that: The solar cell device comprises: A plurality of battery groups, wherein the plurality of battery groups are arranged in sequence along a first direction, and there is a gap between two adjacent battery groups; and A mounting frame, wherein the mounting frame includes a crossbeam and an annular frame, wherein both ends of the crossbeam are respectively connected to the frame and extend along a second direction, wherein the first direction intersects with the second direction, and the battery pack is mounted on the frame, wherein in a direction perpendicular to a backlight surface of the battery pack, the crossbeam covers a gap between two adjacent battery packs and overlaps with a portion of the battery pack, and in the first direction, an overlapping width between the crossbeam and the battery pack does not exceed one third of a width of the battery pack.

2. The solar cell device according to claim 1, characterized in that: In the length direction of the cross beam, the cross beam includes a first portion and a second portion. In a first direction, a width of the first portion is smaller than a width of the second portion.

3. The solar cell device according to claim 2, characterized in that: The crossbeam includes a plurality of the first parts and a plurality of the second parts, and the first parts and the second parts are alternately arranged in sequence.

4. The solar cell device according to claim 1, characterized in that: The beam is provided with a through hole penetrating the beam in a direction perpendicular to the backlight surface of the battery pack.

5. The solar cell device according to claim 1, characterized in that: A first light reflecting layer is arranged on the outer surface of the cross beam.

6. The solar cell device according to claim 1, characterized in that: In a direction perpendicular to the backlight surface of the battery pack, a gap is provided between the beam and the battery pack.

7. The solar cell device according to claim 6, characterized in that: The solar cell device comprises: a transparent buffer pad, the transparent buffer pad is located in the gap and supported between the beam and the battery group, and the transparent buffer pad extends along the second direction.

8. The solar cell device according to any one of claims 1 to 7, characterized in that: The cross beams overlap with two adjacent battery packs respectively.

9. The solar cell device according to claim 8, characterized in that: In the first direction, the overlapping widths of the cross beam and two adjacent battery groups are equal.

10. The solar cell device according to any one of claims 1 to 7, characterized in that: A second light reflecting layer is arranged on the outer surface of the frame.

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