阅读说明：本技术 一种无氟太阳能电池背板及其制备方法 (Fluorine-free solar cell back plate and preparation method thereof ) 是由 柯雨馨 戴亮亮 许奕川 王惠群 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种无氟太阳能电池背板,涉及太阳能电池相关技术领域,包括电池放置架板,所述电池放置架板的顶部开设有放置槽,所述放置槽的内部固定连接有电池板,所述电池板的底部右端固定连接有第一支撑柱,所述电池板的底部左端固定连接有第二支撑柱。本发明还公开了一种无氟太阳能电池背板的制备方法,包括以下步骤：A：选用载体木板,B：导线布置焊接,C：EVA胶膜剪切,D：进行敷设,E：加热和真空合成。本发明通过电池放置架板和放置槽的设置方便了电池板的安装固定,通过第一支撑柱和第二支撑柱的设置起到了支撑电池放置架板的作用,通过底板和螺纹安装孔的设置可以保证电池放置架板防止时的稳定。(The invention discloses a fluoride-free solar cell backboard, which relates to the related technical field of solar cells and comprises a cell placing frame plate, wherein a placing groove is formed in the top of the cell placing frame plate, a cell panel is fixedly connected inside the placing groove, the right end of the bottom of the cell panel is fixedly connected with a first supporting column, and the left end of the bottom of the cell panel is fixedly connected with a second supporting column. The invention also discloses a preparation method of the fluorine-free solar cell back plate, which comprises the following steps: a: selecting a carrier wood board, B: wire arrangement welding, C: cutting an EVA adhesive film, and D: laying, E: heating and vacuum synthesis. The battery placing frame plate and the placing groove are arranged, so that the battery panel is convenient to mount and fix, the first supporting column and the second supporting column are arranged to support the battery placing frame plate, and the battery placing frame plate can be prevented from being stable by arranging the bottom plate and the threaded mounting hole.)

1. A fluoride-free solar cell backboard comprises a cell placing frame plate (1), and is characterized in that: the battery placing frame plate is characterized in that a placing groove (2) is formed in the top of the battery placing frame plate (1), a battery plate (3) is fixedly connected to the inside of the placing groove (2), a first supporting column (4) is fixedly connected to the right end of the bottom of the battery plate (3), a second supporting column (6) is fixedly connected to the left end of the bottom of the battery plate (3), buffering frames (15) are movably connected to the lower portions of the outer surfaces of the second supporting column (6) and the first supporting column (4), bearing plates (16) are fixedly connected to the bottoms of the second supporting column (6) and the first supporting column (4), balls (17) are movably connected to two ends of each bearing plate (16), and springs (18) are fixedly connected to the bottoms of the balls (17);

the solar cell panel is characterized in that a bottom fixedly connected with bottom plate (5) of the buffer frame (15), a bottom fixedly connected with rubber pad (8) of the bottom plate (5), a threaded mounting hole (7) is formed in the bottom of the rubber pad (8), and the cell panel (3) comprises a strengthening layer (14), a back plate layer (9), a first EVA (ethylene vinyl acetate) adhesive film (10), a solar cell piece (11), a second EVA adhesive film (12), a toughened glass layer (13) and a reflecting layer (14).

2. The fluorine-free solar cell backsheet according to claim 1, wherein:

the bottom of the spring (18) is fixedly connected with the top of the bottom plate (5);

the spring (18) and the bearing plate (16) are both positioned in the buffer frame (15);

the inner parts of two sides of the buffer frame (15) are attached and connected with the balls (17).

3. The fluorine-free solar cell backsheet according to claim 1, wherein:

the bottom of the back plate layer (9) is fixedly connected with the top of the first EVA adhesive film (10) through an adhesive;

the bottom of the first EVA adhesive film (10) is fixedly connected with the top of the solar cell sheet (11) through a binder;

the bottom of the reinforcing layer (14) is fixedly connected with the top of the back plate layer (9) through an adhesive.

4. The fluorine-free solar cell backsheet according to claim 1, wherein:

the bottom of the solar cell (11) is fixedly connected with the top of the second EVA adhesive film (12) through a binder;

the bottom of the second EVA adhesive film (12) is fixedly connected with the top of the toughened glass layer (13) through an adhesive.

5. The fluorine-free solar cell backsheet according to claim 1, wherein:

the bottom of the toughened glass layer (13) is fixedly connected with the top of the reflecting layer (14) through an adhesive.

6. A preparation method of a fluorine-free solar cell backboard is characterized by comprising the following steps:

a: selecting a carrier wood board: selecting a wood board with a smooth surface and temperature resistance, then cutting a placing groove (2) with a required size, and cleaning the surface of the wood board;

b: arranging and welding wires: cutting the solar cell (11) according to the voltage and the current which are required to be obtained, welding a circuit lead, and then checking the performance index of the circuit;

c: cutting an EVA adhesive film: cutting the EVA adhesive film according to the size of the solar cell piece (11), and bonding the cut EVA adhesive film on the solar cell piece (11);

d: laying: sequentially bonding and fixing the strengthening layer (14), the back plate layer (9), the first EVA adhesive film (10), the solar cell (11), the second EVA adhesive film (12), the toughened glass layer (13) and the reflecting layer (14) from top to bottom to obtain a cell panel assembly;

e: heating and vacuum synthesis: and (4) placing the laid battery panel assembly into a laminating machine, and pumping air in the battery panel assembly out through a vacuumizing machine and then heating.

7. The method for preparing a fluorine-free solar cell back sheet according to claim 6, wherein:

and in the step E, the heating temperature is 120 ℃, and the laminating cycle time of heat preservation in the laminator is 25 minutes.

8. The method for preparing a fluorine-free solar cell back sheet according to claim 6, wherein:

and in the step E, the prepared battery plate (3) is installed inside the placing groove (2) cut above the wood plate and is fixed for use.

9. The method for preparing a fluorine-free solar cell back sheet according to claim 6, wherein:

and in the step C, a transparent flexible VA adhesive film with the thickness of 25-75 μm and an adhesive (such as EVA, PE and the like) with the thickness of 25-75 μm are adopted for bonding and fixing.

Technical Field

The invention relates to the technical field of solar cells, in particular to a fluoride-free solar cell back plate and a preparation method thereof.

Background

The solar cell panel is a device which directly or indirectly converts solar radiation energy into electric energy through a photoelectric effect or a photochemical effect by absorbing sunlight, most of the solar cell panel is made of silicon, and compared with common batteries and recyclable rechargeable batteries, the solar cell panel belongs to a green product with better energy saving and environmental protection. However, the conventional solar cell back sheet is easily broken and damaged.

Therefore, it is necessary to provide a fluorine-free solar cell back sheet and a method for manufacturing the same to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a fluorine-free solar cell back plate and a preparation method thereof, and solves the problem that the solar cell back plate is easy to break and damage.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a fluorine-free solar cell backboard comprises a cell placing frame plate, wherein a placing groove is formed in the top of the cell placing frame plate, a cell panel is fixedly connected inside the placing groove, a first supporting column is fixedly connected to the right end of the bottom of the cell panel, a second supporting column is fixedly connected to the left end of the bottom of the cell panel, buffering frames are movably connected to the lower portions of the outer surfaces of the second supporting column and the first supporting column, bearing plates are fixedly connected to the bottoms of the second supporting column and the first supporting column, balls are movably connected to two ends of each bearing plate, and springs are fixedly connected to the bottoms of the balls;

the solar cell panel comprises a solar cell sheet, a solar cell panel and a buffer frame, wherein the bottom of the buffer frame is fixedly connected with a bottom plate, the bottom of the bottom plate is fixedly connected with a rubber pad, the bottom of the rubber pad is provided with a threaded mounting hole, and the solar cell panel comprises a strengthening layer, a back plate layer, a first EVA adhesive film, a solar cell sheet, a second EVA adhesive film, a toughened glass layer and a reflecting layer.

Optionally, the bottom of the spring is fixedly connected with the top of the bottom plate;

the spring and the bearing plate are both positioned in the buffer frame;

the inside of both sides of buffering frame all is connected with the ball laminating.

Optionally, the bottom of the back plate layer is fixedly connected with the top of the first EVA adhesive film through an adhesive;

the bottom of the first EVA adhesive film is fixedly connected with the top of the solar cell piece through a binder;

the bottom of the strengthening layer is fixedly connected with the top of the back plate layer through a bonding agent.

Optionally, the bottom of the solar cell is fixedly connected with the top of the second EVA adhesive film through a binder;

the bottom of the second EVA adhesive film is fixedly connected with the top of the toughened glass layer through a binder.

Optionally, the bottom of the tempered glass layer is fixedly connected with the top of the reflecting layer through an adhesive.

A preparation method of a fluorine-free solar cell back plate comprises the following steps:

a: selecting a carrier wood board: selecting a wood board with a smooth surface and temperature resistance, then cutting a placing groove with a required size, and cleaning the surface of the wood board;

b: arranging and welding wires: cutting the solar cell according to the voltage and the current which are required to be obtained, welding a circuit lead, and then checking the performance index of the circuit;

c: cutting an EVA adhesive film: cutting the EVA adhesive film according to the size of the solar cell piece, and bonding the cut EVA adhesive film on the solar cell piece;

d: laying: sequentially bonding and fixing the strengthening layer, the back plate layer, the first EVA adhesive film, the solar cell, the second EVA adhesive film, the toughened glass layer and the reflecting layer from top to bottom to obtain a cell panel assembly;

e: heating and vacuum synthesis: and (4) placing the laid battery panel assembly into a laminating machine, and pumping air in the battery panel assembly out through a vacuumizing machine and then heating.

Optionally, in the step E, the heating temperature is 120 ℃, and the laminating cycle time of heat preservation in the laminator is 25 minutes.

Optionally, in the step E, the prepared battery plate is installed inside a placing groove cut above the wood board for fixing.

Optionally, in the step C, a transparent flexible VA adhesive film with a thickness of 25 μm to 75 μm and an adhesive (such as EVA, PE, etc.) with a thickness of 25 μm to 75 μm are used for bonding and fixing.

(III) advantageous effects

The invention provides a fluorine-free solar cell back plate and a preparation method thereof, and the fluorine-free solar cell back plate has the following beneficial effects:

(1) the solar cell panel is convenient to install and fix through the arrangement of the cell placing frame plate and the placing groove, the effect of supporting the cell placing frame plate is achieved through the arrangement of the first supporting column and the second supporting column, the stability of the cell placing frame plate during prevention can be guaranteed through the arrangement of the bottom plate and the threaded mounting hole, the safety of a solar cell can be better guaranteed through the arrangement of the first EVA adhesive film and the second EVA adhesive film, the overall strength of the cell panel is increased through the arrangement of the toughened glass layer and the reinforcing layer, and the cell panel is prevented from being broken and damaged during transportation.

(2) The invention can ensure the safety of the solar cell during the prevention by selecting the flat and temperature-resistant wood board, can ensure the normal work of the solar cell by arranging and welding the conducting wires, and can ensure the firmness of the solar cell assembly by heating and vacuum synthesis.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic diagram of a battery holder structure according to the present invention;

FIG. 3 is a schematic view of a panel according to the present invention;

FIG. 4 is a schematic view of the internal structure of the buffering frame according to the present invention.

In the figure: 1. a battery housing plate; 2. a placement groove; 3. a battery plate; 4. a first support column; 5. a base plate; 6. a second support column; 7. a threaded mounting hole; 8. a rubber pad; 9. a back plate; 10. a first EVA adhesive film; 11. a solar cell sheet; 12. a second EVA adhesive film; 13. a tempered glass layer; 14. a strengthening layer; 15. a buffer frame; 16. a bearing plate; 17. a ball bearing; 18. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1-3, the present invention provides a solution: the utility model provides a fluoride-free solar cell backboard, including battery placement frame plate 1, standing groove 2 has been seted up at battery placement frame plate 1's top, the inside fixedly connected with panel 3 of standing groove 2, the installation of panel 3 has been made things convenient for through setting up of battery placement frame plate 1 and standing groove 2 to fix, the first support column 4 of bottom right-hand member fixedly connected with of panel 3, the bottom left end fixedly connected with second support column 6 of panel 3, the effect of supporting battery placement frame plate 1 has been played through setting up of first support column 4 and second support column 6, the below of battery placement frame plate 1 is provided with bottom plate 5, the bottom fixedly connected with rubber pad 8 of bottom plate 5, threaded mounting hole 7 has been seted up to the bottom of rubber pad 8, through bottom plate 5 and threaded mounting hole 7 set up can guarantee battery placement frame plate 1 stability when preventing, panel 3 includes reinforcing layer 14, The utility model discloses a solar cell panel, including back sheet layer 9, first EVA glued membrane 10, solar wafer 11, second EVA glued membrane 12, toughened glass layer 13 and reflection stratum 14, through the safety of assurance solar wafer 11 that setting up of first EVA glued membrane 10 and second EVA glued membrane 12 can be better, set up through toughened glass layer 13 and strengthening layer 14 and increased panel 3's bulk strength, prevent panel 3 fracture damage when the transport.

Shown by fig. 4, the equal swing joint in surface lower part of second support column 6 and first support column 4 has buffering frame 15, the equal fixedly connected with load board 16 in bottom of second support column 6 and first support column 4 can prevent through the setting of buffering frame 15 that second support column 6 and first support column 4 from sending out the skew when using, the equal swing joint in both ends of load board 16 has ball 17, can enough reduce the friction of load board 16 through the setting of ball 17, also avoids the vibration that load board 16 produced when the friction simultaneously, the bottom fixedly connected with spring 18 of ball 17, the external force that can receive through the setting of spring 18 cushions battery placement frame plate 1, prevents that external force from too big causing damage of battery placement frame plate 1, the bottom fixedly connected with bottom plate 5 of buffering frame 15.

The working principle is as follows: during operation, the battery plate 3 is fixed in an alkaline bonding mode, the battery plate 3 is placed inside the placing groove 2, the battery placing frame plate 1 is fixed on the first supporting column 4 and the second supporting column 6, the bottom plate 5 is fixed at a designated position through the threaded mounting hole 7, the second supporting column 6 and the first supporting column 4 are extruded when the battery placing frame plate 1 is subjected to external force, the spring 18 is extruded through the bearing plate 16 by the second supporting column 6 and the first supporting column 4, the spring 18 is compressed to generate elastic force, pressure on the bearing plate 16 is buffered through the elastic force of the spring 18, and therefore safety of the battery placing frame plate 1 is improved.

The invention also provides a technical scheme, and the preparation method of the fluorine-free solar cell back plate comprises the following steps: the method comprises the following steps:

a: selecting a carrier wood board: selecting a wood board with a smooth surface and temperature resistance, then cutting a placing groove 2 with a required size, and cleaning the surface of the wood board;

b: arranging and welding wires: cutting the solar cell 11 according to the voltage and current required to be obtained, welding a circuit lead, and then checking the circuit performance index;

c: cutting an EVA adhesive film: cutting the EVA adhesive film according to the size of the solar cell piece 11, and bonding the cut EVA adhesive film on the solar cell piece 11;

d: laying: sequentially bonding and fixing the strengthening layer 14, the back plate layer 9, the first EVA adhesive film 10, the solar cell piece 11, the second EVA adhesive film 12, the toughened glass layer 13 and the reflecting layer 14 from top to bottom to obtain a cell panel assembly;

e: heating and vacuum synthesis: and (4) placing the laid battery panel assembly into a laminating machine, and pumping air in the battery panel assembly out through a vacuumizing machine and then heating.

As an optional technical scheme of the invention:

in step E, the heating temperature is 120 ℃, and the laminating cycle time of heat preservation in the laminator is 25 minutes.

As an optional technical scheme of the invention:

and E, mounting the prepared battery plate 3 in the placing groove 2 cut above the wood board for fixing.

As an optional technical scheme of the invention:

and step C, adopting a transparent flexible VA adhesive film with the thickness of 25-75 μm and an adhesive (such as EVA, PE and the like) with the thickness of 25-75 μm to bond and fix.

In summary, the following steps: safety when can guarantee solar cell and prevent can be guaranteed through chooseing for use level and smooth and temperature resistant plank, arrange the welding through the wire and can guarantee solar cell's normal work, can guarantee the fastness of solar cell equipment through heating and vacuum synthesis.

It is noted that in the present disclosure, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.