CN113421938B

CN113421938B - Solar cell module, efficient laminated curved surface photovoltaic tile and preparation method thereof

Info

Publication number: CN113421938B
Application number: CN202110648387.1A
Authority: CN
Inventors: 程晓龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-12-02
Anticipated expiration: 2041-06-10
Also published as: CN113421938A

Abstract

The invention aims to provide a solar cell module, a high-efficiency laminated curved photovoltaic tile and a preparation method thereof, wherein the solar cell module comprises sliced cells, a laminated string structure and a bus bar, wherein the laminated string structure comprises two or more than two adjacent laminated cell string structures, and each row of mutually laminated multiple sliced cells in the laminated string structure form a laminated structure vertical to the serial connection direction of the cell string structures; in the laminated structure, an overlapping area is arranged between two adjacent sliced batteries, an insulating strip is arranged in the overlapping area, and the bus bars are used for connecting a plurality of battery string structures in the laminated string structure in series or in parallel to form a series-parallel structure. The solar cell module can greatly reduce the arrangement gap between the sliced cells and the shielding area of the main grid welding strip, so that the arrangement area and the light receiving area of the cell pieces can be maximized simultaneously.

Description

Solar cell module, efficient laminated curved surface photovoltaic tile and preparation method thereof

Technical Field

The invention relates to the field of photovoltaic tiles, in particular to a solar cell module, a high-efficiency laminated curved photovoltaic tile and a preparation method thereof.

Background

The solar cell in the current curved surface photovoltaic tile adopts a flexible thin-film solar cell or a crystalline silicon solar cell is cut into small pieces, then conventional series welding is carried out to form a cell string and a cell module, and then materials such as front plate glass, an adhesive, the solar cell module and a back plate are adopted for combined packaging.

However, the prior art has the disadvantages that: when the flexible thin-film solar cell is adopted for slicing design, when a cell string is parallel to a curved surface, a large number of series welding gaps are generated by undersized crystalline silicon sliced cells, so that the assembly efficiency is low, and the assembly output is greatly reduced due to inconsistent light receiving quality of the curved surface model.

Disclosure of Invention

The invention aims to provide a solar cell module, a high-efficiency laminated curved photovoltaic tile and a preparation method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a solar cell module comprises sliced cells, a stack structure and a bus bar, wherein the stack structure comprises two or more than two adjacent stacked cell string structures, and each row of the stacked sliced cells stacked mutually in the stack structure form a stacked structure vertical to the serial connection direction of the cell string structures; in the laminated structure, a superposition region is arranged between two adjacent sliced batteries, an insulating strip is arranged in the superposition region, and the bus bar is used for connecting a plurality of battery string structures in the laminated string structure in series or in parallel to form a series-parallel structure and connecting two electrodes of the series-parallel structure and converging the two electrodes to an output position to form a converging line structure, wherein the output position is used for being electrically connected with the connector;

the battery string structure comprises at least two slice batteries and a main grid welding strip used for serially welding the slice batteries, wherein a front main grid is arranged on one side, close to the long edge, of the front of each slice battery, the back of each slice battery is provided with a back main grid on the opposite side of the front main grid, and the two adjacent slice batteries are welded with the main grid welding strip in a mode that the front and the back of each slice battery are sequentially alternated.

The further improvement is that: the gap distance between one side edge of the front main grid and the edge of the sliced battery is 0.01mm-0.5mm, the width of the front main grid is 0.01mm-2mm, the thickness of a welding strip of the main grid is 0.05mm-0.15mm, the gap distance between one side edge of the back main grid and the long edge of the sliced battery is not more than 50% of the width dimension of the sliced battery and not less than the size of a lamination, and the width value of the back main grid is 0.01mm-8mm.

The further improvement is that: the gap distance between the edge of one side of the back main grid close to the long edge and the edge of the long edge is 2-8 mm.

The further improvement is that: the battery string structure is connected with a plurality of bypass diodes in parallel, each bypass diode is correspondingly and electrically connected with two ends of a part of sliced batteries with corresponding quantity in the battery string structure, and the quantity of the diodes is less than or equal to that of the sliced batteries in the battery string structure.

The further improvement is that: the shape of the series connection gap area of the main grid welding strip in the length direction is flat, or circular arc, or wavy, or Z-shaped or V-shaped.

The further improvement is that: the string piece spacing between two adjacent sliced batteries in the battery string structure is 0.5mm-2mm.

The further improvement is that: in the laminated structure, a welding area formed by the front main grid of one of the sliced cells is positioned in an overlapping area and covered and shielded by the other adjacent sliced cell, and the width of the overlapping area is 0.1mm-1mm.

The invention also provides a high-efficiency laminated curved photovoltaic tile, which comprises a front plate, a back plate, a connector and any one of the solar cell modules adhered between the front plate and the back plate through an adhesive and a bonding agent.

The invention also provides a preparation method of the efficient laminated curved surface photovoltaic tile, which comprises the following steps:

aligning and welding the cut main grid welding strip with the front main grid of the sliced battery;

laminating two adjacent sliced batteries welded with main grid welding strips and insulating the overlapped areas of the two sliced batteries through insulating strips to form laminated connection;

sequentially aligning and bonding a plurality of laminated connected sliced batteries to form a laminated structure;

aligning the laminated structures in sequence, alternately arranging one sides, close to the front main grid, of the two adjacent sliced batteries and one side, close to the back main grid, of the two adjacent sliced batteries at the corresponding positions of the two adjacent laminated structures, and then welding the extending end of the main grid welding strip of the sliced battery in the next laminated structure with the back main grid of the corresponding sliced battery in the last laminated structure to form a laminated string structure;

the plurality of battery string structures in the stacked string structure are connected in series and/or in parallel through the bus bars, a series-parallel structure is formed, electrodes of the series-parallel structure are connected to an output position through the bus bars to form a bus bar outlet structure, and therefore the solar battery module is assembled.

The further improvement is that: in the connecting step of the laminated structure, two adjacent sliced batteries welded with the main grid welding strips are upwards arranged in a laminated mode to form an overlapping area, the front main grid of the sliced battery located below is located in the overlapping area, one side edge, close to the back main grid, of the sliced battery located above is flush with the edge of the front main grid of the sliced battery located below, and the position of the double-faced adhesive tape on the insulating strip is pressed, so that the two laminated sliced batteries are bonded together through the double-faced adhesive tape in the overlapping area, and the laminated structure is formed.

Compared with the prior art, the invention has the beneficial effects that:

1. compared with a common series connection mode of a crystalline silicon solar cell assembly, the cell string structure in the design is that two adjacent sliced cells are welded with a main grid welding strip in a front surface and a back surface sequentially and alternately, so that the sliced cells positioned on the main grid welding strip are arranged in a staggered mode, a stacked string structure is formed by stacking a plurality of cell string structures, and each row of the plurality of the sliced cells stacked mutually in the stacked string structure form a stacked structure vertical to the series connection direction of the cell string structure, so that the arrangement gap between the sliced cells and the shielding area of the main grid welding strip can be greatly reduced for the solar cell module, the arrangement area and the light receiving area of the cell pieces can be maximized at the same time, and the more stable assembly output and higher assembly efficiency of the curved photovoltaic tile are realized;

2. compared with a solar laminated tile serial connection mode of a conductive adhesive technology, the sliced cells are connected through transverse double-sided staggered series welding and are combined with the laminated structure vertical to the cell string structure, so that the arrangement gaps among the cell string structures are eliminated, the number of the slices is reduced, balance of low cost and high performance is realized, and the product competitiveness of the curved surface photovoltaic tile is further improved.

Drawings

FIG. 1 is a schematic structural view of a high efficiency laminated curved photovoltaic tile;

FIG. 2 is a schematic view of the front plate contouring;

FIG. 3 is a schematic structural diagram of a solar cell module;

FIG. 4 is a schematic front view of a sliced cell;

FIG. 5 is a schematic rear view of a sliced cell;

FIG. 6 is a schematic diagram of a battery string configuration;

FIG. 7 is a schematic view of a stacked structure;

FIG. 8 is a schematic diagram of a stacked string structure;

FIG. 9 is a schematic diagram of a parallel structure of a plurality of battery strings in a stacked string structure

FIG. 10 is a schematic diagram of a structure in which a plurality of battery strings are connected in series after being connected in parallel in a stacked string structure;

in the figure: a solar cell module 1;

adhesives

21, 22; a front plate 3; a back plate 4; a connector 5; a tandem structure 10; a battery string structure 11; a sliced battery 100; a main grid solder strip 110; a front main grid 1001; a back side main gate 1002; a laminated structure 12; an insulating strip 120; a series-parallel structure 13; a bus bar 130;

electrodes

131, 132; a bus line structure 14; output position 140.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1, in an embodiment of the present invention, a high-efficiency laminated curved photovoltaic tile includes a front plate 3, an adhesive 21, a solar cell module 1, an adhesive 22, a back plate 4, and a connector 5.

The front plate 3 includes a light receiving surface and a backlight surface, and has excellent light transmittance. In use, sunlight passes through the front plate 3 and reaches the solar cell module 1. In some embodiments, the front plate 3 is a material with high water vapor barrier property and excellent weather resistance, such as a polymer composite film or glass, preferably tempered glass, and more preferably ultra-white tempered glass, and may also be a polymer material, such as a glass fiber reinforced plastic composite material/PC/PMMA/PVC, without being limited thereto. As shown in fig. 2: the invention is suitable for various special-shaped curved surface shapes, wherein the front plate 3 can be in an arc shape, a wave shape, a flat curved shape or the like,

the adhesive 21 and the adhesive 22 are high weather-resistant polymer materials. Which is used to bond the front plate 3, the solar cell module 1, and the back plate 4, and fill the gap between the two layers to form a reliable internal structure, ethylene-vinyl acetate copolymer (EVA), polyolefin elastomer (POE), polyvinyl butyral (PVB), or 2,4,6-trimethylbenzoyl diphenyl phosphine oxide (TP 0,2,4, 6-trimethylphenyldiene oxide) may be used, and the Polyolefin Elastomer (EVA) is preferably a high polymer of ethylene and butene or a high polymer of ethylene and octene, but not limited thereto.

Referring to fig. 3, the solar cell module 1 is a core power generation portion, and includes a stacked string structure 10 formed of solar sliced cells 100 and a bus bar 130.

Referring to fig. 4 and 5, the sliced battery 100 according to the present invention is obtained by cutting a solar cell with a standard specification, and the cell can be cut equally in different numbers according to the curvature radius of different curved surfaces. The sliced battery can be one-half sliced, one-third sliced, one-fourth sliced, one-fifth sliced, one-sixth sliced, or one-tenth sliced battery, and can be other sizes of sliced batteries. The solar cell used may be a polycrystalline silicon solar cell, a single crystalline silicon solar cell, an HIT heterojunction solar cell, and/or the like. A front main grid 1001 is arranged at a position of the front of the sliced battery 100 close to the long edge of one side, wherein the gap distance between the edge of one side of the front main grid 1001 close to the long edge and the edge of the long edge of the sliced battery 100 is preferably 0.01mm-0.5mm. The front main grid 1001 has a width value of 0.01mm to 2mm, preferably 0.1mm to 1.0mm. A back main grid 1002 is arranged at a position of the back of the sliced battery 100 close to the long edge of the other side, wherein the gap distance between the edge of one side of the back main grid 1002 close to the long edge and the edge of the long edge of the sliced battery 100 is not more than 50% of the width dimension of the sliced battery 100 and not less than the lamination dimension, and preferably 2mm-8mm. The width value of the back main grid 1002 is 0.01mm-8mm, preferably 0.1mm-5mm.

The grid electrode welding device also comprises a main grid welding strip 110, wherein the material of the main grid welding strip is a tinned copper strip or a flexible circuit board, so that the main grid welding strip has certain flexibility, and the thickness of the main grid welding strip is 0.02mm-0.5mm, preferably 0.05mm-0.15mm. The width of the main grid welding strip 110 is determined according to the current passing capability of the sliced battery, and generally may be 0.1mm to 10mm, and preferably 0.3mm to 5mm. The length of the main grid welding strip 110 is not less than the length of the sliced battery, and the series connection requirement of the sliced battery 100 can be satisfied, which is not limited by the design. The series gap area of the main grid welding strip 110 in the length direction is flat, arc, wave, zigzag, V-shaped, etc.

Referring to fig. 6, two or more sliced batteries 100 are welded through main grid solder strips 110 in a front and back alternating fashion in order to form a battery string structure 11. During welding, the front main grid 1001 of the previous sliced battery 100 and the back main grid 1002 of the next sliced battery 100 are welded through the main grid welding strip 110, and the stringing gap between two adjacent sliced batteries 100 is 0.01mm-5mm, preferably 0.5mm-2mm. Wherein the main grid solder strip 110 is flush with the front side main grid 1001 of the sliced battery 100 along the length of the sliced battery 100. The main grid solder strip 110 soldered to the main grid 1001 on the front surface of the sliced battery 100 has one end flush with the sliced battery 100. In the battery string structure 11, two adjacent sliced batteries 100 can be arranged in a staggered manner and form an included angle.

Furthermore, a plurality of bypass diodes are connected in parallel to the battery string structure 11, and each bypass diode is electrically connected to two ends of a corresponding number of partially sliced batteries 100 in the battery string structure 11. This number is equal to or less than the number of sliced batteries 100 of the battery string structure 11.

Referring to fig. 7 and 8, the stack string structure 10 includes two or more cell string structures 11 disposed adjacent to each other. The plurality of sliced batteries 100 stacked on each other in each column in the stacked and chained structure 10 form a stacked structure 12 perpendicular to the serial connection direction of the battery chained structure 11; in the laminated structure 12, an overlapping area is formed between two adjacent sliced batteries 100, in the laminated structure 12, a welding area formed by a front main grid of one sliced battery 100 is located in the overlapping area and is covered and shielded by another adjacent sliced battery 100, and the width of the overlapping area is 0.1mm-1mm. The width of the overlapping area is not more than 2mm, and preferably 0.1mm-1mm.

The insulating strips 120 are distributed in the overlapping regions of the stacked structures 12, and are used for electrically insulating the sliced batteries 100 in the adjacent battery string structures 11 in the overlapping regions of the stacked structures. The insulating strip 120 may be double-sided tape or foam tape with adhesive coated on both sides, wherein the adhesive may be acrylic, silicone, or the like. The insulating strip 120 may also be an insulating coating or plating structure attached to the overlapped area of the back side position of the diced cell 100 or the front side position of the main grid welding stripe 110. The plurality of cell string structures 11 of the stacked string structure 10 are welded by the bus bars 130 and form the series-parallel structure 13, so as to realize the series or parallel electrical connection structure. May be all parallel configuration as shown in fig. 9; or a structure of first partially connecting in parallel and then connecting in series, as shown in fig. 10.

The series-parallel structure 13 is to integrate the output maximization of the curved photovoltaic tile under various sunlight irradiation conditions, and the two structures can be combined again according to different product forms, so that the series-parallel structure is not limited to the two structures.

The two

electrodes

131 and 132 of the series-parallel structure are respectively welded to the bus bar 130, and are collected to a designed output position 140 through the bus bar 130 to form the bus bar line structure 14. The bus bar 130 is made of a tinned copper strip or other conductive metal materials, and can also be a conductive adhesive tape.

The back plate 4 is used as the outermost layer structure of the back, can be strengthened float glass, can also be a glass fiber organic composite material/polymer material such as PC/PMMA/PVC and the like, has good weather resistance, effectively ensures the service life of the component, and is not limited to the structure.

The connector 5 is the core component of the electrical output of the photovoltaic tile. The waterproof grade meets the requirement of more than IP67, and meanwhile, the connection reliability is guaranteed.

The embodiment also provides a preparation method of the efficient laminated curved photovoltaic tile, which comprises the following steps:

1) The main grid solder strip 110 is picked up and cut to the design length.

2) And placing the cut main grid welding strip 110 at the position which is flush with the front main grid 1001 of the sliced battery 100, and welding to form the sliced battery 100 with the main grid welding strip 110 welded on the front main grid 1001.

3) The stacked region of the diced cell 100 with the main grid solder ribbon 110 soldered to the front main grid 1001 is subjected to an insulation treatment. When the double-sided tape is used, the insulating tape 120 is attached to the lamination overlapping region on the main grid welding tape 110 or the lamination overlapping region on the back surface of the diced battery 100. If the main grid welding strip 110 or the sliced battery 100 has an insulating structure in the area, the double-sided adhesive tape does not need to be adhered to the whole area, and only the double-sided adhesive tape needs to be adhered to any two points of the area.

4) The diced cells 100 with the main grid solder strips 110 soldered to the front main grid 1001 are placed right side up in the lamination work area.

5) The sliced battery 100 welded with the main grid welding strip 110 on the next front main grid 1001 is overlapped on the sliced battery 100 welded with the main grid welding strip 110 on the last front main grid 1001 with the front main grid 1001 facing upwards, the front main grid 1001 is covered, the edge of one side, close to the back main grid 1002, of the sliced battery 100 welded with the main grid welding strip 110 on the next front main grid 1001 is flush with the edge of the front main grid 100 welded with the main grid welding strip 110 on the last front main grid 1001, the position of the double-sided adhesive tape 1001 is pressed, the sliced batteries 100 welded with the main grid welding strip 110 on the two overlapped front main grids 1001 are adhered together through the double-sided adhesive tape in the overlapping area, and reliable overlapping connection is formed.

6) Step 5 is repeated until the desired set of laminations 12 is completed.

7) The completed stack 12 is placed face down in the layup area.

8) And (3) placing the next laminated structure 12 with the front side facing downwards at the tandem position of the previous laminated structure 12 in the arrangement area according to the arrangement gap, enabling the extending end of the main grid welding strip 110 of the sliced cell 100 of the laminated structure 12 to be superposed with and welded to the back main grid 1002 of the sliced cell 100 of the previous laminated structure 12, and sequentially welding the main grid welding strips 110 of other sliced cells 100 of the laminated structure 12 to the back main grid 1002 of the sliced cell 100 of the previous laminated structure 12 corresponding to the main grid 110 according to the same operation to form the tandem.

9) Step 8 is repeated until the desired plurality of sets of stacked structures 12 are concatenated and form the stacked structure 10.

10 The tandem stack structure 10 is directed downward, and the main grid solder strip 110 is soldered to the back main grid 1002 of each of the diced cells 100 whose back main grid 1002 is not soldered to the end of the main grid solder strip 110. The main grid welding strip 110 needs to extend out of a section of the sliced battery to be used as a plurality of battery string structures 11 in the reserved string stacking structure 10 to perform series-parallel connection welding terminal.

11 Positive and negative terminals of the plurality of battery string structures 11 in the stacked string structure 10 are welded using the bus bars 130 to realize the series-parallel structure 13, and two

electrodes

131 and 132 are formed, depending on the design.

12 The electrical output of the solar cell module 1 is converged to the output position 140 by the bus bar 130, and the desired solar cell module 1 is completed.

13 A front sheet 3 is laid on the laying area, and an adhesive 21, the solar cell module 1, an adhesive 22, and a back sheet 4 are laid on the front sheet 3 in this order to obtain a pre-laminated module.

14 The laid-up pre-laminate assembly is placed in a vacuum-pumping device at the loading position of the laminator, the vacuum-pumping device is sealed and pre-evacuated. When the vacuum degree reaches-95 KPa, keeping for 3 minutes to 10 minutes, preferably 5 minutes to 7 minutes.

15 A vacuum-pumping device with a pre-lamination assembly inside is placed into a laminating machine for vacuum hot-pressing. The parameters of the laminating machine are set as follows:

the first section is at 90-i 00 deg.c for 5-15 min;

the second stage at 110-120 deg.c for 5-15 min;

the third section is at 135-150 deg.c for 30-60 min;

by the vacuum hot-pressing mode, the product quality can be effectively controlled, and the stability of the product manufacturing process and the production yield are improved.

16 The laminated assembly is placed in a cooling area together with a vacuumizing device, and when the vacuum is kept and the surface temperature is reduced to be below 60 ℃, the vacuumizing device is turned on to take out the laminated curved photovoltaic tile assembly.

17 ) trimming the curved photovoltaic tile assembly.

18 Insulation withstand voltage test of curved photovoltaic tile assemblies.

19 Performance test of curved photovoltaic tile assemblies IV).

20 Curved photovoltaic tile mounting connector 5.

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 various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A solar cell module (1) comprising a sliced cell (100), characterized in that: the battery pack is characterized by further comprising a stacking string structure (10) and a bus bar (130), wherein the stacking string structure (10) comprises two or more battery string structures (11) which are adjacently stacked, each column of the stacked battery packs (100) in the stacking string structure (10) are stacked mutually to form a stacked structure (12) which is perpendicular to the serial connection direction of the battery string structures (11), in the stacked structure (12), a superposition area is arranged between every two adjacent battery packs (100), and an insulating strip (120) is arranged in the superposition area; the bus bar (130) is used for connecting a plurality of battery string structures (11) in a stacked string structure (10) in series or in parallel to form a series-parallel structure (13), and connecting and merging two electrodes of the series-parallel structure (13) to an output position (140) to form a bus-out line structure (14), wherein the output position (140) is used for being electrically connected with a connector (5);

the battery string structure (11) comprises at least two sliced batteries (100) and a main grid welding strip (110) for serially welding the sliced batteries (100), wherein a front main grid (1001) is arranged on one side, close to the long side, of the front of each sliced battery (100), a back main grid (1002) is arranged on the back of each sliced battery (100) and on the opposite side of the front main grid, and two adjacent sliced batteries (100) are welded with the main grid welding strip (110) in a mode that the front and the back are sequentially alternated;

in the battery string structure (11), two adjacent sliced batteries (100) are arranged in a staggered manner to form an included angle.

2. Solar cell module (1) according to claim 1, characterized in that: the utility model discloses a slice battery (100) is characterized in that the clearance distance at one side border of positive main grid (1001) with slice battery (100) border is 0.01mm-0.5mm, the width of positive main grid (1001) is 0.01mm-2mm, main grid solder strip (110) thickness is 0.05mm-0.15mm, the clearance distance at one side border of back main grid (1002) and the long edge border of slice battery (100) is not more than 50% of slice battery (100) width size and is not less than the lamination size, and back main grid (1002) width numerical value is 0.01mm-8mm.

3. Solar cell module (1) according to claim 2, characterized in that: the gap distance between the edge of one side of the back main grid (1002), which is close to the long edge, and the edge of the long edge is 2-8 mm.

4. Solar cell module (1) according to claim 1, characterized in that: the battery string structure (11) is connected with a plurality of bypass diodes in parallel, each bypass diode is correspondingly and electrically connected to two ends of a corresponding number of partial sliced batteries (100) in the battery string structure (11), and the number of the diodes is less than or equal to the number of the sliced batteries (100) in the battery string structure (11).

5. Solar cell module (1) according to claim 1, characterized in that: the shape of the serial gap area of the main grid welding strip (110) in the length direction is flat, or circular arc, or wavy, or Z-shaped, or V-shaped.

6. Solar cell module (1) according to claim 1, characterized in that: the string piece spacing between two adjacent sliced batteries (100) in the battery string structure (11) is 0.5mm-2mm.

7. Solar cell module (1) according to claim 1, characterized in that: in the laminated structure (12), a welding area formed by a front main grid of one sliced cell (100) is positioned in an overlapping area and covered and shielded by another adjacent sliced cell (100), and the width of the overlapping area is 0.1-1 mm.

8. The utility model provides a high-efficient stromatolite curved surface photovoltaic tile, includes front bezel (3), backplate (4) and connector (5), its characterized in that: further comprising a solar cell module (1) according to any of claims 1-7 adhered between the front sheet (3) and the back sheet (4) by a first adhesive (21) and a second adhesive (22).

9. A preparation method of a high-efficiency laminated curved photovoltaic tile is characterized by comprising the following steps: the method comprises the following steps:

aligning and welding the cut main grid welding strip (110) with the front main grid (1001) of the sliced battery (100);

laminating two adjacent sliced batteries (100) welded with the main grid welding strips (110) and insulating the overlapped areas of the two sliced batteries through insulating strips (120) to form laminated connection;

sequentially aligning and bonding a plurality of laminated connected sliced batteries (100) to form a laminated structure (12);

sequentially aligning a plurality of laminated structures (12), and alternately arranging one side, close to a front main grid (1001), of two adjacent sliced cells (100) at corresponding positions of the two adjacent laminated structures (12) and one side, close to a back main grid (1002), and then welding the extending end of a main grid welding strip (110) of the sliced cell (100) in the next laminated structure (12) with the back main grid (1002) of the corresponding sliced cell (100) in the previous laminated structure (12) to form a laminated string structure (10);

the plurality of cell string structures (11) in the stacked string structure (10) are connected in series and/or in parallel through the bus bars (130) to form a series-parallel structure (13), and electrodes of the series-parallel structure (13) are connected to the output position (140) through the bus bars (130) to form a bus-out line structure (14), so that the solar cell module (1) is assembled.

10. The method of making a high efficiency laminated curved photovoltaic tile according to claim 9, wherein: in the connecting step of the laminated structure (12), two adjacent sliced batteries (100) welded with the main grid welding strips (110) are arranged upwards in a stacked mode to form an overlapping area, the front main grid (1001) of the sliced battery (100) located below is located in the overlapping area, one side edge, close to the back main grid (1002), of the sliced battery (100) located above is flush with the edge of the front main grid (1001) of the sliced battery (100) located below, and the position of the double-sided adhesive tape on the insulating strip (120) is pressed, so that the two laminated sliced batteries (100) are bonded together through the double-sided adhesive tape in the overlapping area to form the laminated structure (12).