Photovoltaic module preparation method and device

Abstract

The invention discloses a photovoltaic module preparation method and equipment, and relates to the technical field of photovoltaic module production, and the method comprises the steps: arranging a plurality of battery strings into a battery string group in a matrix manner, and laying an insulating film strip on the back surface of the end part of the battery string at least located at one end of a photovoltaic module; the plurality of wires extending out of the end parts of the battery strings are rotated and folded to the back surfaces of the battery pieces along the bending points to form wire bending parts, and the insulating film strips are located between the back surfaces of the battery pieces and the wire bending parts; a first bus bar is welded on a wire bending part, the first bus bar and the wire bending part are in lap joint and are heated, welded and interconnected, before the first bus bar is welded, an insulating film strip and a bending wire are laid in advance, and the bent wire and the bus bar are welded and interconnected, so that the occupied area of a battery string in a unit area of a photovoltaic module is reduced; the power generation efficiency of the unit area of the photovoltaic module is improved, the preparation process steps of the photovoltaic module are simplified, and the preparation efficiency of the full-screen module is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module production, and in particular to a method and equipment for preparing a photovoltaic module. Background Art

[0002] In the photovoltaic industry, in order to improve the power generation efficiency per unit area of ​​photovoltaic modules and reduce the manufacturing cost of batteries, the size of the cells has gradually increased. However, the busbars of conventional photovoltaic modules will take up more of the light-receiving surface of the photovoltaic module, making the photovoltaic module bulky and thick, with poor appearance, and consuming a lot of materials and high cost. The wires at both ends of an existing full-screen photovoltaic module are folded along the edge of the cell to the back of the cell to reduce the area of ​​the cell in the unit photovoltaic module and increase the utilization rate of the photovoltaic module. Therefore, it is urgent to propose a photovoltaic module preparation method and device that can bend the wires at both ends of the photovoltaic module. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a method and equipment for preparing a photovoltaic module.

[0004] In a first aspect, the present application provides a method for preparing a photovoltaic module, comprising: arranging a plurality of cell string matrices into a cell string group, wherein at least one end of each cell string is provided with a plurality of wires extending from the end of the cell string; Laying an insulating film strip on the back of the battery cell at the end of the battery string at at least one end; The plurality of wires extending from the ends of the battery string are rotated and folded along the bending points to the back of the battery cell to form a wire bending portion, with the insulating film strip being located between the back of the battery cell and the wire bending portion; The first bus bar is laid on the bent portion of the wire, so that the first bus bar and the bent portion of the wire are overlapped, and then heated and welded to interconnect.

[0005] Furthermore, the method further includes preparing a second bus bar, moving the second bus bar to the back side of the battery string, vertically overlapping the second bus bar, and heating and welding the second bus bar to interconnect them.

[0006] Furthermore, folding the plurality of wires extending from the end of the battery string to the back of the battery cell includes: pressing the surface of the plurality of wires extending from the end of the battery string, with the pressing point serving as a preset bending point of the wires; The wire bending portion is driven to rotate along the bending point and folded onto the insulating film strip on the back side of the battery cell.

[0007] Furthermore, driving the wire bending portion to rotate along the bending point and fold over to the back of the battery cell includes: driving the wire bending portion to rotate along the bending point by a first angle, withdrawing the force pressing the wire, and then driving the wire bending portion to continue rotating along the bending point by a second angle, so that the wire bending portion is superimposed on the insulating film strip on the back of the battery cell.

[0008] Furthermore, laying an insulating film strip on the back of the battery cell at the end of the battery string at at least one end includes: before the several wires are rotated and folded along the bending point to the back of the battery cell, laying the insulating film strip on the battery cell at the end of the battery string, or, after driving the wire bending portion to rotate a first angle along the bending point, laying the insulating film strip on the back of the battery cell, and then rotating the wire bending portion a second angle to fold the wire bending portion to the back of the battery cell, and the insulating film strip is clamped between the battery cell and the wire bending portion.

[0009] Furthermore, overlapping the first bus bar with the surface of the wire bending portion includes: carrying the first bus bar and placing it on the upper surface of the bent wire bending portion, and pressing the first bus bar and the wire bending portion into contact.

[0010] Furthermore, before folding the wire extending from the end of the battery string to the back of the battery cell, the wire at the end of the battery string is offset by a preset distance along one side thereof, so that the bent portion of the wire forms an angle t with the welding strip on the battery cell at the bending point, 0°<t≤90°.

[0011] In a second aspect, the present application further proposes a photovoltaic module manufacturing device, which applies any of the above-mentioned photovoltaic module manufacturing methods, including: A layout device for arranging battery strings on a carrier board to form battery string groups that constitute photovoltaic modules; an insulating strip placement device, used for placing an insulating film strip on the back of the battery cell at the end of the battery string; A bending device is used to fold the wire extending from the edge of the solar cell at the end of the photovoltaic module to the back of the solar cell to form a wire bending portion; A first busbar preparation device, used to prepare a first busbar and overlap the end of the first busbar transporting the battery string with the bent portion of the wire; The welding device is used to heat and weld the overlapping parts of the first bus bar and the bent part of the conductor to interconnect them.

[0012] Furthermore, it also includes a second busbar preparation device, which is used to prepare the second busbar, transport the second busbar to the back of the battery string and vertically overlap it with the first busbar, and the welding device is used to heat the first busbar and the second busbar so that their contact surfaces are welded and interconnected.

[0013] Furthermore, it also includes a pressing device, which includes a first driving member, a second driving member and a pressing member. The pressing member is arranged on the driving end of the first driving member, and the pressing end of the pressing member is an acute-angle structure. The first driving member is arranged on the driving end of the second driving member, and the driving direction of the first driving member is perpendicular to the driving direction of the second driving member.

[0014] Furthermore, the bending device includes a receiving member for receiving the bent portion of the wire, and a rotating drive component for driving the receiving member to rotate, the rotating axis of the rotating drive component is arranged at the front end of the receiving member, and the front end of the receiving member is set as the bending point of the wire.

[0015] Furthermore, it also includes a transport mechanism, which is movably provided on the upper part of the battery string and is used to grab and transport the end of the battery string.

[0016] The beneficial effects of the present invention on the battery strings are as follows: in the process of preparing photovoltaic modules, before welding the busbars, an insulating film strip is pre-laid on the back of the battery cell, and the bent portion of the bent wire is superimposed on the insulating film strip. The insulating film strip isolates the bent wire from the circuit on the back of the battery cell, and is then welded to the busbar. The busbar is overlapped with the wire folded on the surface of the battery cell, and the busbar is placed on top of the wire. The busbar and the wire are heated to electrically connect the ends of several battery strings through the busbar. The bending of the wire at the end of the battery string is set before the busbar is welded, and can be implemented synchronously in any step of battery string layout or placement of the insulating film strip. There is no need to add a separate device for bending the wire at the end of the battery string in the photovoltaic module preparation step. This can not only simplify the preparation process steps of the full-screen photovoltaic module, but also improve the preparation efficiency. Also, the preparation of this photovoltaic module is suitable for full-screen photovoltaic modules. In the full-screen photovoltaic module, there is no gap on the front of the module, the battery strings are tightly arranged, and the bus bars connecting the battery strings are all set on the back of the battery strings, which reduces the occupied area of ​​the battery strings per unit area of ​​the photovoltaic module and improves the power generation efficiency per unit area of ​​the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the manufacturing steps of the photovoltaic module manufacturing method proposed in the present invention; Figure 2 for Figure 1 A partially enlarged schematic diagram of the step diagram; Figure 3 This is a schematic diagram of a photovoltaic module with a second bus bar welded to it according to the present invention; Figure 4 This is a schematic diagram of a photovoltaic module according to the present invention; Figure 5 A schematic diagram of another photovoltaic module proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a photovoltaic module preparation equipment proposed in the present invention.

[0019] Wherein, the accompanying drawings are marked as follows: 100. Battery string; 10. Wire bending portion; 20. Insulating film strip; 30. First bus bar; 40. Second bus bar; 1. Carrier; 2. Typesetting device; 3. Bending device; 4. Insulating strip placement device; 5. First bus bar preparation device; 6. Welding device; 7. Second bus bar preparation device. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] Conventional photovoltaic modules consist of several cell strings 100. Each cell string 100 has conductors extending from its end. These conductors, extending from the cells, are connected in series or in parallel with other cell strings 100 via busbars. The busbars at the ends of the photovoltaic modules and the conductors welded to them occupy a portion of the effective area of ​​the module, failing to maximize the utilization of the module's effective area. Therefore, folding the busbars located at the ends of the module within the light-receiving surface to the back of the module not only improves the utilization of the effective area within the module's light-receiving surface and increases power generation efficiency per unit area, but also enhances the module's aesthetics by eliminating the need for busbars on the front of the module.

[0024] The present invention proposes a method for preparing a photovoltaic module, such as Figure 1 、 Figure 2 As shown, a photovoltaic module is prepared in which the end wires of a battery string 100 are folded to the back of the battery string 100. The specific steps include: arranging a plurality of battery strings 100 into a battery string group in a matrix, laying an insulating film strip 20 on the back of the battery cell at the end of the battery string 100 at least at one end of the photovoltaic module, rotating and folding a plurality of wires extending from the end of the battery string 100 along the bending point to the back of the battery cell to form a wire bending portion 10, the insulating film strip 20 is located between the back of the battery cell and the wire bending portion 10, and is used to isolate the wire bending portion 10 that is bent and overlapped on the back of the battery cell from contacting the back of the battery cell, forming an insulating layer to prevent the wire and the battery cell from overlapping and short-circuiting, then laying a first bus bar 30 on the wire bending portion 10 bent to the back of the battery cell, so that the first bus bar 30 is overlapped with all the wires of the wire bending portion 10, and heating the first bus bar 30 or the wire bending portion 10 to weld and interconnect the overlapping parts.

[0025] Before bending the wire bending portion 10, the ends of several wires extending from the end edge of the battery string 100 are in a free state. A preset bending point is pressed on several wires near the edge of the battery cell, and the free wires on one side of the bending point are rotated along the bending point to the back of the battery cell. The prepared first bus bar 30 is then overlapped and welded to the wire bending portion 10 stacked on the back of the battery cell. By welding the bus bar to the bent wires, the wires bent to the back of the battery cell are directly transferred to the bus bar welding process. The integrated continuous preparation process is simple in logic and improves the preparation efficiency of the full-screen component.

[0026] In a photovoltaic module, the conductive wire extending from the end of the battery string 100 is folded along the bending point to the back of the battery cell, including: the conductive wire extending from the end of the battery string 100 is located at one end of the photovoltaic module, or at two opposite ends; when located at both ends of the photovoltaic module, an insulating film strip 20 is placed on the battery cells at the opposite ends of the photovoltaic module, and at the same time, the bent portion 10 of the conductive wire extending from the end of the battery string 100 at both ends is rotated and folded onto the insulating film strip 20 of the battery cells at both ends, so as to improve the production efficiency of the photovoltaic module.

[0027] In some embodiments, as Figure 3 As shown, the preparation process of the full-screen component also includes welding a second bus bar 40 on the photovoltaic component. The second bus bar 40 is arranged on the back of the battery string 100 and is overlap-welded and interconnected with the first bus bar 30. The second bus bar 40 is connected to the junction box to transmit the current transmitted from both ends of the battery string 100 to the junction box for outflow.

[0028] When the second bus bar 40 is laid to the back of the battery string 100, an insulating film is also laid between the second bus bar 40 and the surface of the battery string 100, so that the second bus bar 40 does not contact the battery cells except for the area in contact with the first bus bar 30, thereby preventing the bus bar from contacting the battery cells and causing a short circuit.

[0029] In some embodiments, reference Figure 4 As shown, folding the wires extending from the end of the battery string 100 to the back of the battery cell includes: pressing the surfaces of several wires extending from the end of the battery string 100, with the pressing point serving as the bending point of the wires, while pressing the bending point, driving the wire bending portion 10 on one side of the bending point to rotate 180 degrees toward the back of the battery cell and lay on the insulating film strip 20 laid on the surface of the battery cell at the end of the battery string 100, and then moving the prepared first bus bar 30 to the top of the wire bending portion 10 bent onto the insulating film strip 20, overlapping the first bus bar 30 and the wire bending portion 10 and heating and welding them to interconnect them.

[0030] Among them, the first bus bar 30 can be a bus bar that connects the length of the wire bend portion 10 at the end of a battery string 100, or it can be a bus bar group that is linearly arranged and segmented to connect the length of the wire bend portion 10 at the end of multiple battery strings 100. It contains different bus bar compositions according to the series and parallel connection types of the component circuit.

[0031] In another embodiment, driving the wire bending portion 10 to rotate along the bending point and fold to the back of the battery cell includes: driving the wire bending portion 10 to rotate along the bending point by a first angle, and after releasing the wire, driving the wire bending portion 10 to continue to rotate along the bending point by a second angle, so that the wire bending portion 10 is superimposed on the insulating film strip 20 on the back of the battery cell of the battery cell, completing the bending of the end wire of the battery string 100, wherein, after the wire is bent by the first angle, the wire bending portion 10 and the surface of the battery cell form an angle less than 90 degrees, and after releasing the wire, the wire bending portion 10 has a tendency to tilt toward the surface of the battery cell, and when the wire bending portion 10 is driven to rotate toward one side of the battery cell, the wire bending point forms a tendency to bend, and the bending point does not change until the wire bending portion 10 on one side of the bending point covers the back of the battery cell.

[0032] In an alternative embodiment, if Figure 4 As shown, laying the insulating film strip 20 on the back of the battery cell at the end of at least one end of the battery string 100 includes: before the plurality of wires are rotated and folded along the bending point to the back of the battery cell, laying the insulating film strip 20 on the battery cell at the end of the battery string 100, or, The driving wire bending portion 10 is first rotated along the bending point to a first angle, and then the insulating film strip 20 is laid on the back of the battery cell. Subsequently, the wire bending portion 10 is rotated to a second angle to fold the wire bending portion 10 to the back of the battery cell, and the insulating film strip 20 is clamped between the battery cell and the wire bending portion 10.

[0033] In the above embodiment, the insulating film strip 20 can be laid on the surface of the battery cell before pressing the wire, or it can be laid during the process of bending the wire, specifically including: After driving the wire bending portion 10 to rotate along the bending point to a first angle, the insulating film strip 20 is laid on the back of the battery cell, and then the wire bending portion 10 is rotated to a second angle to clamp the insulating film strip 20 between the battery cell and the wire bending portion 10 to achieve the laying of the insulating film strip 20. In this embodiment, when laying the insulating film strip 20, the force pressing the wire is also released in advance to provide sufficient space for the laying of the insulating film strip 20 and improve the efficiency of the film laying.

[0034] Preferably, overlapping the first bus bar 30 with the surface of the wire bending portion 10 includes: moving the first bus bar 30 and placing it on the upper surface of the bent wire bending portion 10, and pressing the first bus bar 30 and the wire bending portion 10 into contact, and heating and welding them during or after contact.

[0035] Reference Figure 5As shown, before folding the wires extending from the end of the battery string 100 to the back of the cell, the wires at the end of the battery string 100 are offset along one side of the wire by a preset distance, so that the wire bending portion 10 forms an angle t with the wires on the cell at the bending point, where 0°<t≤90°. After being bent, the wires in the wire bending portion 10 are staggered and arranged within the gaps between the wires on the cell surface, avoiding contact with the wires on the cell surface. This does not increase the thickness of the wires, reduces the amount of EVA film used during photovoltaic module lamination, and reduces the risk of bubbles generated during module lamination, thereby improving module production yield.

[0036] In addition, based on the above-mentioned photovoltaic module preparation method, such as Figure 6 As shown, the present application also proposes a photovoltaic module preparation device, including a layout device 2 for arranging cell strings 100 on a carrier board 1, arranged into groups of cell strings 100 constituting a photovoltaic module; Insulation strip placement device 4, used to place insulation film strip 20 on the back of the battery cell; The bending device 3 is used to fold the wire extending from the edge of the photovoltaic module to the back of the battery cell to form a wire bending portion 10; A first busbar preparation device 5 is used to prepare a first busbar 30 and overlap the end of the first busbar 30 transporting the battery string 100 with the wire bending portion 10; The welding device 6 is used to heat and weld the overlapping portion of the first bus bar 30 and the bent portion of the wire 10 to interconnect them.

[0037] During the preparation of photovoltaic modules, the typesetting device 2 arranges the battery string 100 on the carrier 1, wherein the carrier 1 can be glass. Before the typesetting device 2 arranges the battery string 100 on the glass plate, or after arranging it on the glass plate, the bending device 3 rotates the wires at the short ends of the battery string 100 along the bending point and folds them to the back of the battery cell. The battery string 100 group with the end wires bent is transported to the busbar welding process. The first busbar preparation device 5 transfers the prepared first busbar 30 to the end of the battery string 100 and overlaps it with all the wires of the wire bending part 10. The first busbar 30 is welded to the wire bending part 10 by the welding device 6, and all the free wire ends of the wire bending part 10 are fixed and welded by the first busbar 30.

[0038] In some embodiments, a second bus bar preparation device 7 is further included to prepare a second bus bar 40, and the second bus bar 40 is moved to the back side of the battery string 100 and vertically overlapped with the first bus bar 30. The welding device 6 is also used to heat the first bus bar 30 and the second bus bar 40 so that the overlap of the first bus bar 30 and the second bus bar 40 is welded and interconnected.

[0039] In some embodiments, a pressing device is also included, which includes a first driving member, a second driving member and a pressing member. The pressing member is arranged on the driving end of the first driving member, and the pressing end of the pressing member is an acute-angle structure. The first driving member is arranged on the driving end of the second driving member, and the driving direction of the first driving member is perpendicular to the driving direction of the second driving member.

[0040] Specifically, the bending device 3 includes a receiving member for receiving the wire bending portion 10 and a rotation drive component for driving the receiving member to rotate. The rotation axis of the rotation drive component is set at the front end of the receiving member, and the front end of the receiving member is set as the bending point of the wire.

[0041] In some embodiments, a transport mechanism is further included, which is movably disposed on the upper portion of the battery string 100 and is used to grab and transport the end of the battery string 100 so as to transport the end of the battery string 100 to the bending device 3. The bending device 3 carries the wire bending portion 10 at the end of the battery string 100 and drives the wire bending portion 10 to bend to the back of the battery cell.

[0042] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0043] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A method for preparing a photovoltaic module, characterized in that: include: Arranging a plurality of battery strings (100) in a matrix to form a battery string group, wherein at least one end of each battery string (100) is provided with a plurality of wires extending from the end of the battery string (100); Laying an insulating film strip (20) on the back of the battery cell at the end of the battery string (100) at at least one end; A plurality of conductive wires extending from the ends of the battery string (100) are rotated and folded along the bending points to the back of the battery cell to form a conductive wire bending portion (10), so that the insulating film strip (20) is located between the back of the battery cell and the conductive wire bending portion (10); A first bus bar (30) is laid on the wire bending portion (10), the first bus bar (30) is overlapped with all the wires of the wire bending portion (10), and the first bus bar (30) and the wire bending portion (10) are heated to weld and interconnect.

2. The method for preparing a photovoltaic module according to claim 1, wherein: The method also includes preparing a second bus bar (40), moving the second bus bar (40) to the back of the battery string (100) to vertically overlap the first bus bar (30), and heating and welding the interconnected parts.

3. The method for preparing a photovoltaic module according to claim 1, wherein: Folding a plurality of wires extending from the end of the battery string (100) to the back of the battery sheet comprises: pressing the surfaces of the plurality of wires extending from the end of the battery string (100), with the pressing points serving as preset bending points of the wires; The conductor bending portion (10) is driven to rotate along the bending point and fold onto the insulating film strip (20).

4. The method for preparing a photovoltaic module according to claim 3, wherein: Driving the wire bending portion (10) to rotate along the bending point and fold over to the back of the battery cell comprises: driving the wire bending portion (10) to rotate along the bending point by a first angle, and after releasing the wire, driving the wire bending portion (10) to continue rotating along the bending point by a second angle, so that the wire bending portion (10) is superimposed on the insulating film strip (20) on the back of the battery cell.

5. The method for preparing a photovoltaic module according to claim 1, wherein: Laying an insulating film strip (20) on the back of the battery cell at the end of at least one end of the battery string (100) comprises: before the plurality of conductive wires are rotated and folded along the bending point to the back of the battery cell, laying the insulating film strip (20) on the battery cell at the end of the battery string (100), or, After driving the wire bending portion (10) to rotate along the bending point by a first angle, the insulating film strip (20) is laid on the back of the battery cell, and then the wire bending portion (10) is rotated by a second angle to fold the wire bending portion (10) to the back of the battery cell, and the insulating film strip (20) is clamped between the battery cell and the wire bending portion (10).

6. The method for preparing a photovoltaic module according to claim 1, wherein: Overlapping the first busbar (30) with the surface of the conductor bending portion (10) includes: carrying the first busbar (30) and placing it on the bent conductor bending portion (10), and pressing the first busbar (30) and the conductor bending portion (10) into contact.

7. The method for preparing a photovoltaic module according to claim 1, wherein: Before the conductive wire extending from the end of the battery string (100) is folded to the back of the battery cell, the conductive wire at the end of the battery string (100) is offset along one side thereof by a preset distance, so that the conductive wire bending portion (10) forms an angle t with the welding strip on the battery cell at the bending point, where 0°<t≤90°.

8. A photovoltaic module manufacturing device, characterized in that: The method for preparing a photovoltaic module according to any one of claims 1 to 7 comprises: A layout device (2) for arranging battery strings (100) on a carrier plate (1) to form a group of battery strings (100) constituting a photovoltaic module; an insulating strip placement device (4) for placing an insulating film strip (20) on the back of the battery cell at the end of the battery string (100); A bending device (3) is used to drive the conductive wire extending from the end of the photovoltaic module out of the end of the battery string (100) to be folded to the back of the battery sheet to form a conductive wire bending portion (10); A first busbar preparation device (5) is used to prepare a first busbar (30) and overlap the end of the first busbar (30) transporting the battery string (100) with the wire bending portion (10); The welding device (6) is used for heating and welding the overlapping portion of the first bus bar (30) and the bent portion of the conductor (10) to interconnect them.

9. The photovoltaic module manufacturing equipment according to claim 8, characterized in that: The invention also includes a second busbar preparation device (7), which is used to prepare a second busbar (40), and to carry the second busbar (40) to the back side of the battery string (100) and vertically overlap the first busbar (30). The welding device (6) is used to heat the first busbar (30) and the second busbar (40) so that their contact surfaces are welded and interconnected.

10. The photovoltaic module manufacturing equipment according to claim 8, characterized in that: It also includes a pressing device, which includes a first driving member, a second driving member and a pressing member. The pressing member is arranged on the driving end of the first driving member, and the pressing end of the pressing member is an acute-angle structure. The first driving member is arranged on the driving end of the second driving member, and the driving direction of the first driving member is perpendicular to the driving direction of the second driving member.

11. The photovoltaic module manufacturing equipment according to claim 8, characterized in that: The bending device (3) comprises a receiving member for receiving the wire bending portion (10), and a rotation drive component for driving the receiving member to rotate, wherein the rotation axis of the rotation drive component is arranged at the front end of the receiving member, and the front end of the receiving member is set as the bending point of the wire.

12. The photovoltaic module manufacturing equipment according to claim 8, characterized in that: It also includes a transport mechanism, which is movably arranged on the upper part of the battery string (100) and is used to grab and transport the end of the battery string (100) to the bending device (3).

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