CN216902986U

CN216902986U - Solar battery plywood structure

Info

Publication number: CN216902986U
Application number: CN202220746118.9U
Authority: CN
Inventors: 赖信吉
Original assignee: Giantplus Technology Co Ltd
Current assignee: Giantplus Technology Co Ltd
Priority date: 2022-03-08
Filing date: 2022-04-01
Publication date: 2022-07-05
Anticipated expiration: 2032-04-01

Abstract

The application discloses solar cell plywood structure, it contains plain board, can peel the glue film, glues and solar cell base plate. The peelable glue layer is arranged in the first central area of the plain plate, and the frame glue is arranged in the first peripheral area of the plain plate. The solar cell substrate covers the upper part of the element plate. The second central area of the solar cell substrate corresponds to the first central area of the element plate, the second peripheral area of the solar cell substrate corresponds to the first peripheral area of the element plate, and the frame glue is clamped between the second peripheral area of the solar cell substrate and the first peripheral area of the element plate.

Description

Solar battery plywood structure

Technical Field

The application relates to the technical field of plywood structures, especially, relate to a solar cell plywood structure.

Background

When the solar cell substrate is thinned due to the requirement of thinning, if the solar cell substrate is directly thinned by the etching solution, the etching solution will etch the electrode layer of the solar cell substrate and damage the photoelectric conversion capability thereof, thereby causing poor photoelectric conversion efficiency or complete failure of photoelectric conversion.

In view of the above, there is a need in the art to provide a solar cell laminate structure that can protect an electrode layer of a solar cell substrate from being corroded by an etching solution during a thinning process.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the present application is implemented as follows: a solar cell plywood structure is provided, which comprises a plain plate, a peelable glue layer, frame glue and a solar cell substrate. The element plate is provided with a first central area and a first peripheral area, and the first peripheral area is arranged around the first central area. The strippable glue layer is arranged in the first central area of the plain plate. The frame glue is arranged on the first peripheral area of the plain plate. The solar cell substrate covers the upper portion of the element plate, and is provided with a second central area and a second peripheral area, and the second peripheral area is arranged around the second central area. The second central area of the solar cell substrate corresponds to the first central area of the element plate, the second peripheral area of the solar cell substrate corresponds to the first peripheral area of the element plate, and the frame glue is clamped between the second peripheral area of the solar cell substrate and the first peripheral area of the element plate.

In the solar cell plywood structure of the application, the frame glue has a plurality of plywood glue material groups, the plurality of plywood glue material groups are distributed at a first peripheral area of the plain plate at intervals, and a first distance is respectively arranged between the plurality of plywood glue material groups.

In the solar cell plywood structure of the present application, the plural plywood glue material groups are four plywood glue material groups.

In the solar cell plywood structure of this application, the four plywood glued material groups have two plywood glued materials respectively, and have the second distance between the two plywood glued materials.

In the solar cell plywood structure of this application, the four plywood glued material group has four plywood glued materials respectively, and has the second distance between the four plywood glued materials.

In the solar cell plywood structure of the present application, the first distance is the same as the second distance.

In the solar cell plywood structure of the present application, the first distance is different from the second distance.

In the solar cell plywood structure of the present application, the plywood glue material each has a plurality of adhesive tapes, and the plurality of adhesive tapes are parallel to the nearest end of the first peripheral area of the green sheet.

In the solar cell plywood structure of this application, plural adhesive tape has first adhesive tape, second adhesive tape and the third adhesive tape that is parallel to each other, has first interval between first adhesive tape and the nearest end, has the second interval between second adhesive tape and the nearest end, and has the third interval between third adhesive tape and the nearest end.

In the solar cell plywood structure of the present application, the first pitch is smaller than the second pitch, and the second pitch is smaller than the third pitch.

In the solar cell plywood structure of this application, plural adhesive tape has first adhesive tape, second adhesive tape, third adhesive tape and the fourth adhesive tape that is parallel to each other, has first interval between first adhesive tape and the nearest end, has the second interval between second adhesive tape and the nearest end, has the third interval between third adhesive tape and the nearest end, and has the fourth interval between fourth adhesive tape and the nearest end.

In the solar cell plywood structure of the present application, the first pitch is smaller than the second pitch, the second pitch is smaller than the third pitch, and the third pitch is smaller than the fourth pitch.

In the solar cell plywood structure of this application, plural adhesive tape has first adhesive tape, second adhesive tape, third adhesive tape, fourth adhesive tape and the fifth adhesive tape that is parallel to each other, first adhesive tape and the nearest end have first interval between, second adhesive tape and the nearest end have the second interval between, third adhesive tape and the nearest end have the third interval between, fourth adhesive tape and the nearest end have the fourth interval between, and fifth adhesive tape and the nearest end have the fifth interval between.

In the solar cell plywood structure of the present application, the first pitch is smaller than the second pitch, the second pitch is smaller than the third pitch, the third pitch is smaller than the fourth pitch, and the fourth pitch is smaller than the fifth pitch.

In the solar cell laminate structure of the present application, the surface of the second central region of the solar cell substrate facing the element plate is an electrode layer of the solar cell substrate.

In the solar cell plywood structure of this application, the peelable glue layer has first height, and frame glue has the second height, and first height is less than the second height.

In the embodiment of the present application, the element plate is disposed on the opposite side of the electrode layer of the solar cell substrate, so that the electrode layer of the solar cell substrate is protected from being eroded by the etching solution during the thinning process of the solar cell substrate, thereby ensuring the photoelectric conversion efficiency of the solar cell substrate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic view of a mother board and a sealant of a solar cell laminate structure according to the present invention.

Fig. 2 is a cross-sectional view of the solar cell laminate structure of the present application.

Fig. 3 is a schematic view of a sealant of a solar cell panel structure according to a first embodiment of the present invention.

Fig. 4 is a schematic view of a sealant of a solar cell panel structure according to a second embodiment of the present invention.

Fig. 5 is a schematic view of a sealant of a solar cell laminate structure according to a third embodiment of the present invention.

FIG. 6 is an enlarged view of area A of FIG. 4 showing a first embodiment of a plurality of adhesive strips.

FIG. 7 is an enlarged view of area A of FIG. 4 showing a second embodiment of a plurality of adhesive strips.

FIG. 8 is an enlarged view of area A of FIG. 4 showing a third embodiment of a plurality of adhesive strips.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 and fig. 2, the present application provides a solar cell plywood structure 100, which includes a base plate 200, a peelable glue layer 300, a sealant 400, and a solar cell substrate 500.

As shown, the base plate 200 has a first central region 210 and a first peripheral region 220, and the first peripheral region 220 is disposed around the first central region 210. That is, the first peripheral region 220 surrounds the outer edge of the first central region 210.

The peelable glue layer 300 is disposed in the first central region 210 of the base plate 200, and the sealant 400 is disposed in the first peripheral region 220 of the base plate 200. That is, when the peelable glue layer 300 and the sealant 400 are both disposed on the mother substrate 200, the sealant 400 is disposed around the peelable glue layer 300.

The solar cell substrate 500 covers the upper portion of the base plate 200. The solar cell substrate 500 has a second central region 510 and a second peripheral region 520, and the second peripheral region 520 surrounds the second central region 510. The second central region 510 of the solar cell substrate 500 corresponds to the first central region 210 of the pixel plate 200, the second peripheral region 520 of the solar cell substrate 500 corresponds to the first peripheral region 220 of the pixel plate 200, and the sealant 400 is sandwiched between the second peripheral region 520 of the solar cell substrate 500 and the first peripheral region 220 of the pixel plate 200.

Referring to fig. 3, the sealant 400 has a plurality of sealant material sets 410. The plurality of plywood glue groups 410 are spaced apart from each other and distributed in the first peripheral area 220 of the blank 200, and a first distance D1 is respectively provided between the plurality of plywood glue groups 410.

In detail, in one embodiment, when the solar cell plywood structure 100 of the present application is a rectangular structure, the sealant 400 has four groups of the plurality of plywood glue groups 410, i.e. four plywood glue groups 410. At this time, the four plywood glue material groups 410 spaced apart from each other and distributed on the first peripheral area 220 of the blank 200 will have a first distance D1 respectively. In other words, in the first embodiment of the sealant 400 shown in fig. 3, the sealant 400 has only four broken portions, and the distance between the four broken portions is the first distance D1.

In the second embodiment of the sealant 400 shown in fig. 4, the four plywood glue material groups 410 respectively have two plywood glue materials 420, and the two plywood glue materials 420 have a second distance D2 therebetween. In other words, in the second embodiment of the sealant 400 shown in fig. 4, the sealant 400 has eight breaks, and the distances between the eight breaks at four corners are the first distance D1, and the distances between the other breaks are the second distance D2.

In the third embodiment of the sealant 400 shown in fig. 5, the four plywood glue material groups 410 respectively have four plywood glue materials 420, and the four plywood glue materials 420 respectively have a second distance D2 therebetween. In other words, in the third embodiment of the sealant 400 shown in fig. 5, the sealant 400 has sixteen broken portions, and the distance between the sixteen broken portions at four corners is the first distance D1, and the distance between the other broken portions is the second distance D2.

Through the arrangement of the first distance D1 and the second distance D2, the plywood glue material groups 410 and the plywood glue materials 420 are discontinuously arranged, so that after the solar cell plywood structure 100 is completed, the air pressure at the inner side of the frame glue 400 is communicated with the air pressure at the outer side of the frame glue 400, and the problem that subsequent processing is difficult due to negative pressure possibly existing between the element plate 200 and the solar cell substrate 500 after the element plate 200 and the solar cell substrate 500 are bonded by the frame glue 400 in a plywood step is solved.

In one embodiment, the first distance D1 is between 2-6 mm, and the second distance D2 is between 2-6 mm, but not limited thereto. In other words, the first distance D1 and the second distance D2 may be adjusted to have the same or different values according to different subsequent processing requirements.

As shown in fig. 6, in the present embodiment, the plywood glue materials 420 may respectively have a plurality of glue strips, and the plurality of glue strips are parallel to the nearest end 222 of the first peripheral area 220 of the element board 200.

Specifically, as shown in the first embodiment of the plurality of strips of fig. 6, the plurality of strips includes three strips, which are a first strip 421, a second strip 422, and a third strip 423 that are parallel to each other. The first strip 421 has a first distance G1 from the proximal end 222, the second strip 422 has a second distance G2 from the proximal end 222, and the third strip 423 has a third distance G3 from the proximal end 222. Preferably, the first distance G1 is smaller than the second distance G2, and the second distance G2 is smaller than the third distance G3.

As shown in the second embodiment of the plurality of adhesive strips of fig. 7, the plurality of adhesive strips may have four adhesive strips, which are a first adhesive strip 421, a second adhesive strip 422, a third adhesive strip 423 and a fourth adhesive strip 424 that are parallel to each other. The first adhesive strip 421 has a first distance G1 from the proximal end 222, the second adhesive strip 422 has a second distance G2 from the proximal end 222, the third adhesive strip 423 has a third distance G3 from the proximal end 222, and the fourth adhesive strip 424 has a fourth distance G4 from the proximal end 222. Preferably, the first distance G1 is less than the second distance G2, the second distance G2 is less than the third distance G3, and the third distance G3 is less than the fourth distance G4.

As shown in the third embodiment of the plurality of adhesive tapes in fig. 8, the plurality of adhesive tapes may have five adhesive tapes, which are a first adhesive tape 421, a second adhesive tape 422, a third adhesive tape 423, a fourth adhesive tape 424, and a fifth adhesive tape 425, which are parallel to each other. The first adhesive strip 421 has a first distance G1 from the proximal end 222, the second adhesive strip 422 has a second distance G2 from the proximal end 222, the third adhesive strip 423 has a third distance G3 from the proximal end 222, the fourth adhesive strip 424 has a fourth distance G4 from the proximal end 222, and the fifth adhesive strip 425 has a fifth distance G5 from the proximal end 222. Preferably, the first distance G1 is less than the second distance G2, the second distance G2 is less than the third distance G3, the third distance G3 is less than the fourth distance G4, and the fourth distance G4 is less than the fifth distance G5.

Through the arrangement of the first distance G1, the second distance G2, the third distance G3, the fourth distance G4 and the fifth distance G5 (if any), the plywood operation of the solar cell plywood structure 100 of the present application can be effectively performed, and after the plywood operation is completed, the solid adhesion relationship between the element board 200 and the solar cell substrate 500 is ensured.

In one embodiment, the first distance G1 is between 3.8-4.4 mm, the second distance G2 is between 4.8-5.4 mm, the third distance G3 is between 5.8-6.4 mm, the fourth distance G4 is between 6.8-7.4 mm, and the fifth distance G5 is between 7.8-8.4 mm. In other words, the distances between the first adhesive tape 421, the second adhesive tape 422, the third adhesive tape 423, the fourth adhesive tape 424 and the fifth adhesive tape 425 can be adjusted according to the needs. That is, the first pitch G1, the second pitch G2, the third pitch G3, the fourth pitch G4 and the fifth pitch G5 may be adjusted according to different subsequent processing requirements, so that the first adhesive tape 421, the second adhesive tape 422, the third adhesive tape 423, the fourth adhesive tape 424 and the fifth adhesive tape 425 may be disposed at equal intervals or at unequal intervals.

Referring to fig. 2 again, in the solar cell plywood structure 100 of the present application, the surface of the second central region 510 of the solar cell substrate 500 facing the element plate 200 is an electrode layer 502 of the solar cell substrate 500, which can receive light energy to convert into electric energy after forming a finished product. In addition, the peelable glue layer 300 disposed on the base plate 200 has a first height H1 in a direction toward the solar cell substrate 500, the sealant 400 disposed on the base plate 200 has a second height H2 in the direction toward the solar cell substrate 500, and the first height H1 is smaller than the second height H2.

Through the above arrangement, the sealant 400 can provide good adhesion stability and support between the pixel plate 200 and the solar cell substrate 500, and the peelable adhesive layer 300 faces the electrode layer 502 of the solar cell substrate 500, so that the peelable adhesive layer 300 has the effect of protecting the electrode layer 502 and preventing the electrode layer 502 from being scratched or broken when contacting the pixel plate 200 below.

In one embodiment, the first height H1 is between 0.05 mm and 0.3 mm, and the second height H2 is between 0.4 mm and 0.7 mm, but not limited thereto. In addition, a buffer distance B is provided between the peelable glue layer 300 in the first central area 210 of the base plate 200 and the sealant 400 at the periphery, and the buffer distance B is greater than or equal to 0.6 mm. The buffer distance B also has the effect of protecting the electrode layer 502, thereby avoiding the situation that the electrode layer 502 is accidentally damaged in the subsequent section cutting process.

In summary, in the solar cell plywood structure 100 of the present application, when the solar cell substrate 500 is thinned, the first distance D1, the second distance D2 and the number of the glue bars are changed by the arrangement of the plywood glue material group 410 of the sealant 400, so that the adjustment is performed according to the process differences of different machine models or the differences of the materials, the electrode layer 502 of the solar cell substrate 500 is not eroded by the etching solution, and good adhesion stability and support are provided between the solar cell substrate 500 and the green sheet 200. On the other hand, the peelable glue layer 300 is disposed to prevent the electrode layer 502 from being scratched or broken by the collision of the element board 200, thereby ensuring the photoelectric conversion efficiency and the process yield of the solar cell substrate 500.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

While the present embodiments have been described with reference to the accompanying drawings, the present embodiments are not limited to the above embodiments, which are merely illustrative and not restrictive, and those skilled in the art can now make various changes and modifications without departing from the spirit and scope of the present invention.

Claims

1. A solar cell laminate structure comprising:

the panel comprises a plain plate, a first side plate and a second side plate, wherein the plain plate is provided with a first central area and a first peripheral area, and the first peripheral area is arranged around the first central area;

the peelable glue layer is arranged in the first central area of the plain plate;

the frame glue is arranged in the first peripheral area of the plain plate; and

a solar cell substrate covering the element plate, wherein the solar cell substrate is provided with a second central area and a second peripheral area, and the second peripheral area is arranged around the second central area;

the second central area of the solar cell substrate corresponds to the first central area of the plain plate, the second peripheral area of the solar cell substrate corresponds to the first peripheral area of the plain plate, and the frame glue is clamped between the second peripheral area of the solar cell substrate and the first peripheral area of the plain plate.

2. The solar cell panel structure of claim 1, wherein the sealant has a plurality of sealant groups, the plurality of sealant groups are spaced apart from each other and distributed in the first peripheral region of the green sheet, and the plurality of sealant groups have a first distance therebetween.

3. The solar cell plywood structure according to claim 2, wherein said plural plywood glue groups are four ply plywood glue groups.

4. The solar cell plywood structure of claim 3 wherein the four ply plywood groups each have a two ply plywood and the two ply plywood are spaced apart by a second distance.

5. The solar cell plywood structure of claim 3 wherein the four ply plywood groups each have four ply veneers with a second distance between the four ply veneers.

6. A solar cell laminate structure according to claim 4 or 5 wherein the first distance is the same as the second distance.

7. A solar cell laminate structure of claim 4 or 5 wherein the first distance is different from the second distance.

8. A solar cell plywood structure according to claim 4 or 5 wherein said plywood sheets each have a plurality of strips parallel to the nearest end of said first peripheral region of said element board.

9. The solar cell plywood structure of claim 8 wherein the plurality of adhesive strips have a first adhesive strip, a second adhesive strip and a third adhesive strip parallel to each other, the first adhesive strip having a first spacing from the proximal end, the second adhesive strip having a second spacing from the proximal end, and the third adhesive strip having a third spacing from the proximal end.

10. The solar cell plywood structure of claim 9 wherein the first pitch is less than the second pitch and the second pitch is less than the third pitch.

11. The solar cell panelboard structure of claim 8 wherein the plurality of strips have a first strip, a second strip, a third strip and a fourth strip parallel to one another, the first strip having a first spacing from the proximal end, the second strip having a second spacing from the proximal end, the third strip having a third spacing from the proximal end and the fourth strip having a fourth spacing from the proximal end.

12. The solar cell plywood structure of claim 11 wherein the first pitch is less than the second pitch, the second pitch is less than the third pitch, and the third pitch is less than the fourth pitch.

13. The solar cell plywood structure of claim 8 wherein the plurality of adhesive strips have a first adhesive strip, a second adhesive strip, a third adhesive strip, a fourth adhesive strip, and a fifth adhesive strip that are parallel to each other, the first adhesive strip having a first spacing from the proximal end, the second adhesive strip having a second spacing from the proximal end, the third adhesive strip having a third spacing from the proximal end, the fourth adhesive strip having a fourth spacing from the proximal end, and the fifth adhesive strip having a fifth spacing from the proximal end.

14. The solar cell plywood structure of claim 13 wherein the first pitch is less than the second pitch, the second pitch is less than the third pitch, the third pitch is less than the fourth pitch, and the fourth pitch is less than the fifth pitch.

15. The solar cell laminate structure of claim 1 wherein the surface of the second central region of the solar cell substrate facing the green sheet is an electrode layer of the solar cell substrate.

16. The solar cell panel structure of claim 1, wherein the peelable glue layer has a first height in a direction towards the solar cell substrate, the sealant has a second height in the direction towards the solar cell substrate, and the first height is less than the second height.