Single-crystalline photovoltaic module and method for manufacturing the same

Abstract

The present invention discloses a single-sided solar power generation module, which includes a battery string composed of battery cells connected in a single-sided manner. Metal wires coated with seed layer fine grid lines are provided on the front and back surfaces of the battery cells. Two adjacent battery cells in the battery string are connected by a sheet-like conductive connection material. The present invention replaces the conductive adhesive with the sheet-like conductive connection material, and can flexibly arrange the position of the sheet-like conductive connection material according to different layout methods, so as to form a stable electrical connection with the front and back sheet batteries, achieving the purpose of reducing costs and enhancing effects. The present invention can improve the strength and reliability of the inter-sheet connection of the single-sided module, reduce the material cost, and improve the power of the single-sided module. The present invention optimizes the current transmission path in the module, removes the lateral current transmission of the fine grid lines, and the fine grid lines only serve to connect the battery and the metal wire. There is basically no diameter requirement for the fine grid lines, so the metal consumption of the fine grid lines can be reduced by up to 80% at most, saving a large amount of material costs.

Description

Technical Field

[0001] The present invention relates to a single-sided solar power generation module and a method for manufacturing the same.

Background Art

[0002] A shingled module is usually a module in which a conventional battery cell is cut into small slices, and each small slice battery is stacked in series front and back with a conductive adhesive and then laminated and sealed. This connection method replaces the metal grid line connection method of the conventional module, omits the process of screen printing the main grid of the battery, and reduces the line loss and the shielding of the grid line against light rays. Since there is no sheet gap in the shingled module, the power of the shingled module is higher than that of the conventional module with the same area.

[0003] However, single modules currently face two major problems. First, the cell-to-module (CTM) is low. Mainly because single modules transmit current through thin grids, the current transmission path increases by more than 400% compared to conventional 16BB (16-busbar) cells. This causes high line losses in single cells and even higher module power losses. In addition, a diffuse reflection structure (such as a back panel) is provided between cells in conventional modules, which can increase the secondary absorption of light by the cells. However, single modules stack two cells vertically to transmit current, resulting in no gain between cells. Second, the cost is high. 1) Single modules use conductive adhesives to complete the connection between cells. The main component of the conductive adhesive is silver particles, and the cost of silver is relatively high. Moreover, since the conductive adhesive transmits current through the mutual contact between conductive particles, a decrease in the solid content means a deterioration in conductive performance, so silver consumption is high. The conductive adhesive needs to be stored below -20°C, and the storage cost is relatively high. In addition, the conductive adhesive has high requirements for equipment accuracy and a relatively complex coating method. Therefore, the single module already has very high costs for conductive adhesive materials and coating. 2) The thin grid transmission path of single module cells is long. To reduce power consumption due to line losses, the width of the thin grid must be increased, which also increases silver consumption. 3) The overlapping area of single module cells is usually between 0.5 and 1 mm, and the overlapping area causes waste of silicon materials.

[0004] Regarding the problems of high cost and low CTM of single modules, some manufacturers weld metal welding bands on the outer surface of the cells, which can play the role of concentrating the transmitted current like the main grid, shorten the transmission path of the thin grid current, reduce line losses, and improve the power of single modules. However, the cost reduction in aspects such as materials and equipment caused by conductive adhesives is extremely small.

[0005] Also, the fine grid line metal of the solar cell is generally silver. In an ordinary single module, the current concentrates on the silver fine grid lines from the outer surface of the battery cell and is directly transmitted to the adjacent battery cells by the silver fine grid lines. The cross-sectional area of the silver fine grid lines is small. By cutting an ordinary single battery cell multiple times into small sheets of thin strips, the current transmission distance of the silver fine grid lines can be shortened, and further the electrical resistance loss can be reduced.

Summary of the Invention

[0006] To solve the deficiencies of the prior art, the present invention provides a single crystalline photovoltaic module, which includes a battery string composed of battery cells connected in a single crystalline manner. Metal wires coated with seed layer fine grid lines (which may be silver fine grid lines) are provided on the front and back surfaces of the battery cells. Two adjacent battery cells in the battery string are connected by a sheet-like conductive connection material. The sheet-like conductive connection material is a conductive tape (conductive double-sided tape), an ultra-thin alloy material, or an ultra-thin metal sheet whose outer surface is covered with solder.

[0007] Preferably, the seed layer fine grid lines and the metal wires are arranged in parallel on the outer surface of the battery cell, and the distance between adjacent fine grid seed layers and metal wires is 1 to 3 mm.

[0008] Preferably, on the surface of the above-mentioned battery cell, a plurality of surface metal wires covered with seed layer fine grid lines and parallel to each other are provided, and each surface metal wire extends along the head and tail direction of the battery cell where it is located. The tail end of each surface metal wire extends outside the tail end of the battery cell where the surface metal wire is located, and the sheet-like conductive connection material is located at the tail end of each surface metal wire. The length by which the tail end of each surface metal wire extends outside the tail end of the battery cell where it is located is not greater than 5 mm, preferably not greater than 2 mm.

[0009] Preferably, the above-mentioned ultra-thin alloy material can be remelted and solidified again in the lamination process of the module. The solder on the outer surface of the above-mentioned ultra-thin metal sheet can be remelted and solidified again in the lamination process of the module.

[0010] The present invention also provides various manufacturing methods for single-sided solar power generation modules, and specific processes can be referred to in the examples.

Advantages of the Invention

[0011] The advantages and beneficial effects of the present invention are as follows.

[0012] In the single-sided solar power generation module of the present invention, the current transmission path is such that the current flows from the battery cell substrate to the outer surface of the battery cell, and then is vertically transmitted to the metal wire through the thin grid lines of the seed layer on the outer surface of the battery cell, and further transmitted to the sheet-shaped conductive connection material through the metal wire, and transmitted from the sheet-shaped conductive connection material to the adjacent battery cell. Among them, the thin grid lines of the seed layer only play the role of vertically drawing out the current and transmitting the current to the metal wire, and do not play the role of transmitting the current in the horizontal direction.

[0013] As described above, the thin grid line metal of the battery cell for solar power generation is generally silver. The present invention optimizes the current transmission path in the module, removes the horizontal transmission of the current in the thin grid lines, and the thin grid lines only play the role of connecting the battery and the metal wire. There is basically no diameter requirement for the thin grid lines, so the metal consumption of the thin grid lines can be reduced by up to 80% at most, greatly saving the material cost.

[0014] As described above, in the conventional single module, current gathers from the outer surface of the battery cell to the silver fine wires and is directly transmitted to the adjacent battery cell through the silver fine wires. Since the cross-sectional area of the silver fine wires is small, the conventional single battery cell can only be cut into a small sheet of thin strips multiple times in order to shorten the current transmission distance of the silver fine grid lines, thereby reducing the resistance loss. The present invention transmits current directly through a metal wire. Since the cross-sectional area of the metal wire is large, the resistance is small, and the loss is low, a single module can be manufactured using a wider battery cell, the number of cuts of the battery cell and the loss of the cutting efficiency of the battery cell can be reduced, and the manufacturing speed of the module can be improved. In addition, the metal wire can reduce the light shielding of the outer surface of the battery cell by forming, further improving the module efficiency. The metal wire shape preferably selects triangles, circles, semi-circles, etc.

[0015] The present invention replaces the conductive adhesive with a sheet-shaped conductive connection material such as a conductive tape (conductive double-sided tape), an ultra-thin alloy material, or an ultra-thin metal sheet with solder covering the outer surface, and can flexibly arrange the position of the sheet-shaped conductive connection material according to different layout methods, and form a stable electrical connection with the front and rear sheet batteries, achieving the purpose of reducing costs and enhancing effects.

[0016] The present invention can improve the strength and reliability of the sheet connection of the single module, reduce the material cost, and improve the power of the single module.

[0017] The end of the surface metal wire of the present invention extends from the outside of the end of the battery cell. The sheet-shaped conductive connection material is located at the end of each surface metal wire. The back surface of the head end of the subsequent battery cell and the end of the surface metal wire of the previous battery cell are fixedly connected by the sheet-shaped conductive connection material. Thereby, the shielding of the head end of the subsequent battery cell against the end of the previous battery cell and the shielding of the sheet-shaped conductive connection material against the surface of the battery cell can be avoided or reduced. The waste of silicon materials caused by single can be reduced, and the cost can be saved. The gain between sheets can be increased, and the CTM value of the single module can be increased. The shielding against light rays can be reduced, and the efficiency of the module can be increased.

[0018] The present invention can design the extraction length of the surface metal wire (i.e., the length that the end of the surface metal wire extends from the outside of the end of the cell) according to the thickness of the battery cell, the module assembly method, etc. The yield strength of the surface metal wire does not exceed 120 MPa. When the surface metal wire has a relatively small extraction length (the length that the end of the surface metal wire extends from the outside of the end of the battery cell is not greater than 5 mm, preferably not greater than 2 mm), the battery cell will not be cracked, and the stress in the battery cell after welding and the risk of cracks in the long term can be reduced.

[0019] The base material of the sheet-like conductive connection material of the present invention adopts a metal or alloy material with a relatively soft texture. The yield strength of the sheet-like conductive connection material of the present invention does not exceed 120 MPa. When the sheet-like conductive connection material is placed on the back surface of the battery cell, it can be ensured that the battery cell will not cause risks such as cracks due to lamination and long-term reduction in reliability.

[0020] The sheet-like conductive connection material of the present invention can complete welding during the lamination process of the module (the ultra-thin alloy material will remelt and harden again during the lamination process of the module. The solder on the outer surface of the ultra-thin metal sheet can remelt and solidify again during the module lamination process). Thereby, the present invention does not need to perform end welding of the conductive adhesive like the conventional single module. After the modules are laminated, the present invention can directly complete the electrical connection in the laminator, simplifying the process. This method also conforms to the principle of replacing the dotted welding of the conventional module with surface welding of the single module. Moreover, metal alloy welding improves the welding reliability compared with the conductive adhesive and reduces the material cost.

Embodiments for Carrying out the Invention

[0021] Hereinafter, specific embodiments of the present invention will be further described with reference to examples. The following examples are for more clearly explaining the technical solution means of the present invention and do not limit the protection scope of the present invention.

[0022] The technical solution for the specific implementation of the present invention is as follows.

Example

[0023] The present invention provides a single-sided solar power generation module, which is manufactured by the following process.

[0024] 1) Lay a solar power generation panel (for example, solar power generation glass) and a surface encapsulant film.

[0025] 2) Lay rectangular battery cells on the surface encapsulant film, and stack the heads and tails of the battery cells to form a battery string. The head-tail direction of the battery cell is the length direction of the battery cell. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the front surface of the tail end of the previous battery cell. A single-sided connection sheet-like conductive connection material is pre-arranged on the tail end surface and / or the head end back surface of each battery cell. The sheet-like conductive connection material is an elongated sheet-like conductive connection material whose length direction is perpendicular to the head-tail direction of the battery cell. The sheet-like conductive connection material adopts a conductive tape (conductive double-sided tape), an ultra-thin alloy material, or an ultra-thin metal sheet whose outer surface is covered with solder. Welding is performed on the sheet-like conductive connection material to fixedly connect two adjacent battery cells in a single battery string by the sheet-like conductive connection material (the back surface of the head end of the subsequent battery cell and the front surface of the tail end of the previous battery cell are fixedly connected by the sheet-like conductive connection material).

[0026] 3) Weld the bus bar and the electrode lead wire.

[0027] 4) Lay a back surface encapsulant film and a solar power generation back panel (it may also be back panel glass). At this time, a laminated component waiting for lamination is formed.

[0028] 5) Put the laminated component into a laminator for lamination to integrally bond the laminated component.

[0029] 6) Install the junction box and the module frame.

[0030] The battery cell used in Process 2) of Example 1 may further be provided with a metal wire covering the seed layer fine grid lines on its front surface and / or back surface. More specifically, On the front surface of the battery cell used in Process 2), a plurality of front surface metal wires (arranging one fine grid line of the front surface seed layer corresponding to each front surface metal wire) covered by and arranged in parallel with the seed layer fine grid lines are provided. Each front surface metal wire extends along the head and tail direction of the battery cell where it is located, and the tail end of each front surface metal wire is connected to the sheet-like conductive connection material. The interval between two adjacent front surface metal wires is 1 - 3 mm. The cross-sectional shape of the front surface metal wire is triangular, circular, semi-circular, etc. On the back surface of the battery cell used in Process 2), a plurality of back surface metal wires (arranging one fine grid line of the back surface seed layer corresponding to each back surface metal wire) covered by and arranged in parallel with the seed layer fine grid lines are provided. Each back surface metal wire extends along the head and tail direction of the battery cell where it is located, and the head end of each back surface metal wire is connected to the sheet-like conductive connection material. The interval between two adjacent back surface metal wires is 1 - 3 mm. The cross-sectional shape of the back surface metal wire is triangular, circular, semi-circular, etc.

Example

[0031] The present invention also provides another single crystalline solar power generation module, which is manufactured by the following process.

[0032] 1) Lay a solar power generation panel (for example, a solar power generation glass) and a front surface sealing material film.

[0033] 2) Lay a rectangular battery cell on the surface sealing material film, and stack the heads and tails of the battery cells to form a battery string. The head-tail direction of the battery cell is the length direction of the battery cell. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the front surface of the tail end of the previous battery cell. A sheet-like conductive connection material for single-sided connection is pre-arranged on the front surface of the tail end and / or the back surface of the head end of each battery cell. The sheet-like conductive connection material is an elongated sheet-like conductive connection material whose length direction is perpendicular to the head-tail direction of the battery cell. The sheet-like conductive connection material employs an ultra-thin alloy material or an ultra-thin metal sheet whose outer surface is covered with solder. The ultra-thin alloy material can be remelted and solidified again in the lamination process of the module. The solder on the outer surface of the ultra-thin metal sheet can be remelted and solidified again in the lamination process of the module.

[0034] 3) Weld the bus bar and the electrode lead wire.

[0035] 4) Lay the back surface sealing material film and the photovoltaic back panel (it may also be back panel glass). At this time, a laminated component waiting for lamination is formed.

[0036] 5) Put the laminated component into a laminator for lamination to integrally bond the laminated component. The lamination temperature is 130 - 160 °C. In the lamination process, the solder on the outer surface of the ultra-thin alloy material or the ultra-thin metal sheet is melted to fixedly connect two adjacent battery cells (the back surface of the head end of the subsequent battery cell and the front surface of the tail end of the previous battery cell are fixedly connected by the sheet-like conductive connection material).

[0037] 6) Attach the junction box and the module frame.

[0038] The battery cell used in process 2) of Example 2 may further be provided with a metal wire covering the seed layer fine grid line on its surface and / or back surface. More specifically, On the surface of the battery cell used in Process 2), a plurality of surface metal lines covered with and arranged in parallel to the seed layer fine grid lines (one fine grid line of the surface seed layer is arranged corresponding to each surface metal line) are provided. Each surface metal line extends along the head-tail direction of the battery cell where it is located, and the tail end of each surface metal line is connected to the sheet-like conductive connection material. The interval between two adjacent surface metal lines is 1 to 3 mm. The cross-sectional shape of the surface metal line is triangular, circular, semi-circular, etc. On the back surface of the battery cell used in Process 2), a plurality of back surface metal lines covered with and arranged in parallel to the seed layer fine grid lines (one fine grid line of the back surface seed layer is arranged corresponding to each back surface metal line) are provided. Each back surface metal line extends along the head-tail direction of the battery cell where it is located, and the head end of each back surface metal line is connected to the sheet-like conductive connection material. The interval between two adjacent back surface metal lines is 1 to 3 mm. The cross-sectional shape of the back surface metal line is triangular, circular, semi-circular, etc.

Example

[0039] The present invention also provides another single crystal solar power generation module, which is manufactured by the following process.

[0040] 1) Lay a solar power generation panel (for example, a solar power generation glass) and a surface sealing material film.

[0041] 2) Lay a rectangular battery cell with a surface metal wire on the surface sealing material film, and stack the heads and tails of the battery cells to form a battery string. The head-tail direction of the battery cell is the length direction of the battery cell. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the tail end of the surface metal wire of the previous battery cell, and a plurality of surface metal wires (each surface metal wire corresponds to a fine grid wire of one surface seed layer) covered with a seed layer fine grid wire and arranged in parallel are arranged on the surface of each battery cell. Each surface metal wire extends along the head-tail direction of the battery cell where it is located. The distance between two adjacent surface metal wires is 1-3 mm. The cross-sectional shape of the surface metal wire is triangular, circular or semi-circular, etc. The tail end of each surface metal wire extends outside the tail end of the battery cell where the surface metal wire is located, and the length of the tail end of each surface metal wire extending outside the tail end of the battery cell where the surface metal wire is located is 5 mm or less (preferably 2 mm or less). A sheet-shaped conductive connection material for single connection is arranged on the surface metal wire tail end of each battery cell and / or the back surface of the head end of each battery cell. The sheet-shaped conductive connection material is an elongated sheet-shaped conductive connection material whose length direction is perpendicular to the head-tail direction of the battery cell. The sheet-shaped conductive connection material adopts a conductive tape (conductive double-sided tape), an ultra-thin alloy material or an ultra-thin metal sheet with solder covering its outer surface. Welding is performed on the sheet-shaped conductive connection material to fixedly connect two adjacent battery cells in a single battery string by the sheet-shaped conductive connection material (the back surface of the head end of the subsequent battery cell and the tail end of the surface metal wire of the previous battery cell are fixedly connected by the sheet-shaped conductive connection material).

[0042] 3) Weld the bus bar and the electrode lead wire.

[0043] 4) Lay the back surface sealing material film and the solar power generation back panel (it may also be back panel glass). At this time, a laminated component waiting for lamination is formed.

[0044] 5) Put the laminated component into a laminator and laminate it to integrally combine the laminated component.

[0045] 6) Attach the junction box and the module frame.

[0046] The battery cell used in Process 2) of Example 3 may further be provided with a metal wire covering the seed layer fine grid lines on its back surface. More specifically, On the back surface of the battery cell used in Process 2), a plurality of back surface metal wires (arranging one fine grid line of the back surface seed layer corresponding to each back surface metal wire) covered by and arranged in parallel with the seed layer fine grid lines are provided. Each back surface metal wire extends along the head and tail direction of the battery cell where it is located, and the tail end of each back surface metal wire is connected to the sheet-like conductive connection material. The interval between two adjacent back surface metal wires is 1 to 3 mm. The cross-sectional shape of the back surface metal wire is triangular, circular, semi-circular, etc.

Example

[0047] The present invention also provides another single-crystalline solar power generation module, which is manufactured by the following process.

[0048] 1) Lay a solar power generation panel (for example, a solar power generation glass) and a surface sealing material film.

[0049] 2) Lay a rectangular battery cell with a surface metal wire on the surface sealing material film, and stack the heads and tails of the battery cells to form a battery string. The head-tail direction of the battery cell is the length direction of the battery cell. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the tail end of the surface metal wire of the previous battery cell, and a plurality of surface metal wires (one fine grid wire of a surface seed layer is arranged corresponding to each surface metal wire) covered by the seed layer fine grid wires and arranged in parallel are arranged on the surface of each battery cell. Each surface metal wire extends along the head-tail direction of the battery cell where it is located. The distance between two adjacent surface metal wires is 1 to 3 mm. The cross-sectional shape of the surface metal wire is triangular, circular or semi-circular, etc. The tail end of each surface metal wire extends outside the tail end of the battery cell where the surface metal wire is located, and the length that the tail end of each surface metal wire extends outside the tail end of the battery cell where the surface metal wire is located is 5 mm or less (preferably 2 mm or less). A sheet-shaped conductive connection material for single connection is arranged on the surface metal wire tail end of each battery cell and / or the back surface of the head end of each battery cell. The sheet-shaped conductive connection material is an elongated sheet-shaped conductive connection material whose length direction is perpendicular to the head-tail direction of the battery cell. The sheet-shaped conductive connection material employs an ultra-thin alloy material or an ultra-thin metal sheet with solder covering the outer surface. The ultra-thin alloy material can be remelted and solidified again in the lamination process of the module. The solder on the outer surface of the ultra-thin metal sheet can be remelted and solidified again in the lamination process of the module.

[0050] 3) Weld the bus bar and the electrode lead wire.

[0051] 4) Lay the back surface sealing material film and the solar power generation back panel (it may also be back panel glass). At this time, a laminated component waiting for lamination is formed.

[0052] 5) Put the laminated component into a laminator for lamination to integrally bond the laminated component. The lamination temperature is 130 to 160 °C. During the lamination process, the solder on the outer surface of the ultra-thin alloy material or the ultra-thin metal sheet is melted to fixedly connect two adjacent battery cells (the back surface of the head end of the subsequent battery cell and the tail end of the surface metal wire of the previous battery cell are fixedly connected by the sheet-shaped conductive connection material).

[0053] 6) Attach the junction box and the module frame.

[0054] The battery cell used in process 2) of Example 4 may further be provided on its back surface with a metal wire covering the seed layer fine grid line. More specifically, On the back surface of the battery cell used in process 2), there are also provided a plurality of back surface metal wires covered by and arranged in parallel with the seed layer fine grid lines (one fine grid line of the back surface seed layer is arranged corresponding to each back surface metal wire). Each back surface metal wire extends along the head and tail direction of the battery cell where it is located, and the head end of each back surface metal wire is connected to the sheet-shaped conductive connection material. The distance between two adjacent back surface metal wires is 1 to 3 mm. The cross-sectional shape of the back surface metal wire is triangular, circular or semi-circular, etc.

[0055] More specifically, in Examples 1 to 4, The yield strength of each surface metal wire does not exceed 120 MPa. The thickness of the sheet-shaped conductive connection material does not exceed 0.1 mm. The yield strength of the sheet-shaped conductive connection material does not exceed 120 MPa.

[0056] The above are only preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can be made, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A single-crystalline photovoltaic module, comprising: a battery string formed by connecting battery cells in a single-crystalline manner; metal wires covered with fine grid lines of a seed layer are provided on the front and back surfaces of the battery cells; two adjacent battery cells in the battery string are connected by a sheet-like conductive connection material; The sheet-like conductive connection material is a conductive tape, an ultra-thin alloy material, or an ultra-thin metal sheet whose outer surface is covered with solder. The single-crystalline photovoltaic module is characterized by this.

2. A plurality of front surface metal wires covered with and arranged in parallel with the fine grid lines of the seed layer are arranged on the front surface of the battery cell. Each front surface metal wire extends along the head and tail direction of the battery cell, and the tail end of each front surface metal wire is connected to the sheet-like conductive connection material. The single-crystalline photovoltaic module according to claim 1 is characterized by this.

3. A plurality of back surface metal wires covered with and arranged in parallel with the fine grid lines of the seed layer are arranged on the back surface of the battery sheet. Each back surface metal wire extends along the head and tail direction of the battery cell, and the head end of each back surface metal wire is connected to the sheet-like conductive connection material. The single-crystalline photovoltaic module according to claim 2 is characterized by this.

4. The distance between two adjacent front surface metal wires is 1 to 3 mm, and the distance between two adjacent back surface metal wires is 1 to 3 mm. The single-crystalline photovoltaic module according to claim 3 is characterized by this.

5. The cross-sectional shapes of the front surface metal wire and the back surface metal wire are triangular, circular, or semi-circular. The single-crystalline photovoltaic module according to claim 3 is characterized by this.

6. The tail end of each front surface metal wire extends outside the tail end of the battery cell, and the sheet-like conductive connection material is located at the tail end of each front surface metal wire. The single-crystalline photovoltaic module according to claim 2 or 3 is characterized by this.

7. The length by which the tail end of each front surface metal wire extends outside the tail end of the battery cell does not exceed 5 mm. The single-crystalline photovoltaic module according to claim 6 is characterized by this.

8. The yield strength of each front surface metal wire does not exceed 120 MPa. The single-crystalline photovoltaic module according to claim 6 is characterized by this.

9. The thickness of the sheet-like conductive connection material does not exceed 0.1 mm. The single-crystalline photovoltaic module according to claim 1 is characterized by this.

10. The single-crystalline solar power generation module according to claim 1, wherein the yield strength of the sheet-like conductive connection material does not exceed 120 MPa.

11. The single-crystalline solar power generation module according to claim 1, wherein the sheet-like conductive connection material is an elongated sheet-like conductive connection material, and the length direction of the elongated sheet-like conductive connection material is perpendicular to the head and tail direction of the battery cell.

12. A method for manufacturing a single-crystalline solar power generation module, comprising: 1) Laying a solar power generation panel and a front sealing material film; 2) Laying battery cells on the front sealing material film, stacking the heads and tails of the battery cells to form a battery row. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the front surface of the tail end of the previous battery cell, and a sheet-like conductive connection material for single-crystalline connection is pre-arranged on the front surface of the tail end and / or the back surface of the head end of each battery cell. The sheet-like conductive connection material is a conductive tape, an ultra-thin alloy material, or an ultra-thin metal sheet whose outer surface is covered with solder. Welding is performed on the sheet-like conductive connection material to fixedly connect two adjacent battery cells in a single battery row by the sheet-like conductive connection material; 3) Welding the bus bar and the electrode lead wire; 4) Laying a back sealing material film and a solar power generation back panel, at this time, a laminated component waiting for lamination is formed; 5) Putting the laminated component into a laminator for lamination to integrally bond the laminated component; 6) Installing a junction box and a module frame; A method for manufacturing a single-crystalline solar power generation module, characterized by including the above steps.

13. A method for manufacturing a single-crystalline solar power generation module, comprising: 1) Laying a solar power generation panel and a front sealing material film; 2) Laying battery cells on the front sealing material film, stacking the heads and tails of the battery cells to form a battery row. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the front surface of the tail end of the previous battery cell, and a sheet-like conductive connection material for single-crystalline connection is pre-arranged on the front surface of the tail end and / or the back surface of the head end of each battery cell. The sheet-like conductive connection material is an ultra-thin alloy material, or an ultra-thin metal sheet whose outer surface is covered with solder; 3) Welding the bus bar and the electrode lead wire; 4) Laying a back sealing material film and a solar power generation back panel, at this time, a laminated component waiting for lamination is formed; 5) Place the laminated component into a laminator for lamination to integrally bond the laminated component, and during the lamination process, melt the solder on the outer surface of the ultra-thin alloy material or ultra-thin metal sheet, and fixedly connect two adjacent battery cells. 6) Attach the junction box and the module frame. A method for manufacturing a single crystalline solar power generation module, characterized by including the above steps.

14. A method for manufacturing a single crystalline solar power generation module, comprising: 1) Lay a solar power generation panel and a surface sealing material film. 2) Lay battery cells with surface metal wires on the surface sealing material film, and stack the heads and tails of the battery cells to form a battery row. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the tail end of the surface metal wire of the previous battery cell, and a plurality of surface metal wires covered with seed layer fine grid lines and arranged in parallel are disposed on the surface of each battery cell. Each surface metal wire extends along the head-tail direction of the battery cell, and the tail end of each surface metal wire extends outside the tail end of the battery cell. A sheet-shaped conductive connection material for single crystalline connection is pre-arranged on the tail end of the surface metal wire of each battery cell and / or the back surface of the head end of each battery cell. The sheet-shaped conductive connection material is a conductive tape, an ultra-thin alloy material, or an ultra-thin metal sheet with solder covering its outer surface. Welding is performed on the sheet-shaped conductive connection material to fixedly connect two adjacent battery cells in a single battery row with the sheet-shaped conductive connection material. 3) Weld the bus bar and the electrode lead wire. 4) Lay the back surface sealing material film and the solar power generation back panel. At this time, a laminated component waiting for lamination is formed. 5) Place the laminated component into a laminator for lamination to integrally bond the laminated component. 6) Attach the junction box and the module frame. A method for manufacturing a single crystalline solar power generation module, characterized by including the above steps.

15. A method for manufacturing a single crystalline solar power generation module, comprising: 1) Lay a solar power generation panel and a surface sealing material film. 2) Lay the battery cells with surface metal wires on the surface sealing material film, and stack the heads and tails of the battery cells to form a battery string. When stacking, the back surface of the head end of the subsequent battery cell is stacked on the tail end of the surface metal wire of the previous battery cell, and a plurality of surface metal wires covered with seed layer fine grid lines and arranged in parallel are arranged on the surface of each battery cell. Each surface metal wire extends along the head-tail direction of the battery cell, and the tail end of each surface metal wire extends outside the tail end of the battery cell. A sheet-like conductive connection material for single-sided connection is pre-arranged on the tail end of the surface metal wire of each battery cell and / or the back surface of the head end of each battery cell. The sheet-like conductive connection material is an ultra-thin alloy material or an ultra-thin metal sheet with solder covering its outer surface. 3) Weld the bus bar and the electrode lead wire. 4) Lay the back surface sealing material film and the photovoltaic back panel. At this time, a laminated component waiting for lamination is formed. 5) Put the laminated component into a laminator for lamination, integrally combine the laminated component, and dissolve the solder on the outer surface of the ultra-thin alloy material or the ultra-thin metal sheet during the lamination process to fixedly connect two adjacent battery cells. 6) Install the junction box and the module frame. A manufacturing method of a single-sided photovoltaic module, characterized by including the above steps.

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