KR102604429B1 - Solar cell module and method for manufacturing the same - Google Patents

Abstract

A solar cell module according to an embodiment of the present invention includes a plurality of solar cells including first and second solar cells, and a plurality of wiring members connecting the first solar cells and the second solar cells. Contains strings. Each of the plurality of solar cells includes a photoelectric conversion unit having a long axis and a short axis that intersect each other, a connected first electrode located on one surface of the photoelectric conversion unit, and a second electrode located on the other surface of the photoelectric conversion unit. The plurality of wiring members extend in the long axis direction to connect the first solar cell and the second solar cell in the long axis direction.

Description

Solar cell module and method of manufacturing the same {SOLAR CELL MODULE AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a solar cell module and a method of manufacturing the same, and more specifically, to a solar cell module having a solar cell of an improved structure through an improved process and a method of manufacturing the same.

Generally, a solar cell module is formed by connecting a plurality of solar cells in series or parallel and packaging them. In order to minimize the output loss of solar cell modules, solar cells of various structures are being applied to solar cell modules. As an example, a solar cell module was proposed using solar cells that are formed by cutting a mother solar cell and have a major axis and a minor axis.

In a solar cell module that uses solar cells cut from a mother solar cell like this, for example, a structure has been proposed that overlaps parts of neighboring solar cells and connects them. However, in this structure, the area overlapping with neighboring solar cells becomes a dead area where photoelectric conversion cannot occur, so there was a certain limit to improving the output of the solar cell module.

As another example, a structure has been proposed that connects adjacent solar cells to each other using an interconnector extending in the short axis direction of the cut solar cell while separating the cut solar cells from the mother solar cell. According to this, the solar cell is cut in a direction parallel to the finger line and the finger line is arranged in the long axis direction, but the overall area where the finger line is lost or damaged in the cut area may be large. In order to minimize these problems, the overall design of the solar cell electrode must be modified, but this is difficult to apply because the cost may increase. In addition, since there are differences in the structure and size of the solar cells processed by the tabbing device used to connect the interconnector to the solar cell, the structure, method, and conditions of the tabbing device must be changed. Accordingly, large costs are incurred in research, development, and manufacturing of new tabbing devices.

The present invention seeks to provide a solar cell module that can be manufactured without changing the electrode design and tabbing device while applying solar cells cut from the mother solar cell. At this time, the aim is to provide a solar cell module with excellent output by connecting cut solar cells without dead areas.

Meanwhile, the present invention seeks to provide solar cell modules that can be used in various locations, in various structures, and for various purposes. In particular, the present invention can provide a solar cell module applied to blinds.

A solar cell module according to an embodiment of the present invention includes a solar cell string in which a plurality of solar cells each having a major axis and a minor axis are connected by a wiring member, and the wiring member extends in the direction of the major axis to connect the plurality of solar cells. do. Here, the plurality of solar cells may include first and second solar cells, and the wiring member may include a plurality of wiring members connecting the first solar cell and the second solar cell. Each of the plurality of solar cells includes a photoelectric conversion unit having the long axis and the short axis intersecting each other, a connected first electrode located on one surface of the photoelectric conversion unit, and a second electrode located on the other surface of the photoelectric conversion unit. do. The plurality of wiring members extend in the long axis direction to connect the first solar cell and the second solar cell in the long axis direction.

The length of the solar cell in the direction in which the solar cell string extends may be longer than the width of the solar cell in the direction intersecting the solar cell string.

A plurality of solar cell strings may be provided in the minor axis direction, and inclined portions of solar cells located on both sides of the plurality of solar cells included in the plurality of solar cell strings adjacent in the minor axis direction may be positioned to be symmetrical to each other.

A plurality of solar cell strings may be provided in the minor axis direction, and a conductive connector connecting the plurality of solar cell strings may extend parallel to the minor axis direction of the solar cells.

The first electrode may include a plurality of finger lines located parallel to each other along the minor axis direction, and may include a bus bar located along the major axis direction and corresponding to the wiring member.

The bus bar may include a plurality of pad portions located in the long axis direction.

The plurality of wiring members may include a core layer and a solder layer located on an outer surface of the core layer, and the plurality of wiring members may be fixed to the plurality of pad portions by the solder layer.

The solar cell module may include at least one body having a shape extending long in the long axis direction. The main body includes a solar cell string including the plurality of solar cells connected along the long axis direction, a first conductive connector connected to one end of the solar cell string, and a first conductive connector connected to the other end of the solar cell string, A second conductive connecting material extending to a portion adjacent to the first end may be provided.

The first conductive connecting material may include a first connecting portion extending along the second direction from the first end. The second conductive connecting material includes a second connection portion extending along the second direction from the second end side and a portion adjacent to the first end from the second connection portion to the plurality of solar cells along the first direction. It may have an extension portion that extends along one edge while being spaced apart. The extended portion may extend along one edge in the second direction and may not be provided on the other edge.

A method of manufacturing a solar cell module according to an embodiment of the present invention includes forming a mother solar cell including a plurality of solar cells; Cutting part or all of the mother solar cell in the thickness direction; and tabbing the plurality of solar cells in a state positioned in the shape of the mother solar cell.

In the cutting step, the mother solar cell may be completely cut in the thickness direction. Before the tabbing step, a temporary fixing step of fixing the plurality of solar cells formed from the mother solar cell using a temporary fixing member to form the plurality of solar cells into the shape of the mother solar cell may be further included. The method may further include removing the temporary fixing member after the tabbing step.

In the cutting step, the mother solar cell may be partially cut in the thickness direction. After the tabbing step, a complete cutting step of completely cutting another portion of the mother solar cell in the thickness direction may be further included.

The cutting step may be performed by laser processing using a laser, and the complete cutting step may be performed by mechanical processing that applies physical shock to the mother solar cell.

According to this embodiment, when manufacturing a solar cell module using solar cells having a long axis and a short axis cut from the mother solar cell, the longitudinal direction of the wiring material or bus bar is parallel to the long axis to minimize the loss of the finger line during the cutting process. You can. And since there is no change in the structure of the solar cell applied to the tabbing device, the cut or to-be-cut solar cell can be tabbed by putting it into the tabbing device in the shape of the mother solar cell. As a result, a new tabbing device is not needed and the existing tabbing device can be used as is. As a result, manufacturing costs and manufacturing processes can be greatly improved while using cut solar cells.

1 is a schematic perspective view showing a solar cell module according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG. 1.
FIG. 3 shows a mother solar cell for manufacturing a solar cell included in the solar cell module shown in FIG. 1.
FIG. 4 is a schematic cross-sectional view taken along line IV-IV of FIG. 3, showing a state in which wiring material is attached.
Figure 5 is a schematic plan view showing a manufacturing process of a solar cell module according to an embodiment of the present invention.
Figure 6 is a schematic diagram showing another manufacturing process of a solar cell module according to an embodiment of the present invention.
FIG. 7 is a schematic plan view showing a plurality of solar cells included in a solar cell module according to a modified example of the present invention, where the mother solar cell is cut along a cutting line.
Figure 8 is a perspective view schematically showing various examples of applying a solar cell module according to another embodiment of the present invention.
FIG. 9 is a plan view showing one body included in the solar cell module shown in FIG. 8.
Figure 10 is a partial plan view showing an enlarged portion B of Figure 9.
FIG. 11 is a schematic perspective view showing the bypass diode shown in FIG. 10.
FIG. 12 is a schematic configuration diagram illustrating a plurality of bodies included in the solar cell module shown in FIG. 8 unfolded together with a micro inverter.
Figure 13 is a plan view showing one body that can be included in a solar cell module according to a modified example of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. However, it goes without saying that the present invention is not limited to these embodiments and can be modified into various forms.

In the drawings, parts not related to the description are omitted in order to clearly and briefly explain the present invention, and identical or extremely similar parts are denoted by the same drawing reference numerals throughout the specification. In addition, in the drawings, the thickness, area, etc. are enlarged or reduced in order to make the explanation more clear, so the thickness, area, etc. of the present invention are not limited to what is shown in the drawings.

And when a part is said to “include” another part throughout the specification, it does not exclude other parts and may further include other parts, unless specifically stated to the contrary. Additionally, when a part of a layer, membrane, region, plate, etc. is said to be “on” another part, this includes not only cases where it is “directly above” the other part, but also cases where other parts are located in between. When a part of a layer, membrane, region, plate, etc. is said to be "directly on top" of another part, it means that the other part is not located in the middle.

Hereinafter, a solar cell module according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a schematic perspective view showing a solar cell module according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view taken along line II-II of FIG. 1. FIG. 3 is a mother solar cell for manufacturing a solar cell included in the solar cell module shown in FIG. 1, and FIG. 4 is a schematic cross-sectional view taken along line IV-IV of FIG. 3, showing a state in which wiring material is attached. This is a cross-sectional view.

1 to 4, the solar cell module 100 according to this embodiment includes a plurality of solar cells 150 including first and second solar cells 151 and 152, and the first solar cell. It includes a solar cell string including a plurality of wiring members 142 connecting the solar cell 151 and the second solar cell 152. At this time, each solar cell 150 includes a photoelectric conversion unit (PCP) having long and short axes that intersect each other, and a connected first electrode 42 located on one surface of the photoelectric conversion unit (PCP) and a photoelectric conversion unit (PCP). ) and a second electrode 44 located on the other side. At this time, the plurality of wiring members 142 extend in the long axis direction (first direction) of the solar cell 150 (x-axis direction in the drawing) to connect the first solar cell 151 and the second solar cell 152 in the long axis direction. Connect to And the solar cell module 100 includes a first cover member 110 located on the first side (e.g., front) of the plurality of solar cells 150, and a second side (e.g., front side) of the plurality of solar cells 150. For example, it further includes a second cover member 120 located on the rear side, and a sealing material 130 that seals the plurality of solar cells 150 between the first cover member 110 and the second cover member 120. can do. This will be explained in more detail.

First, the solar cell 150 includes a photoelectric conversion unit (PCP) that converts the solar cell into electrical energy, and first and second electrodes 42 that are electrically connected to the photoelectric conversion unit (PCP) to collect and transmit current. , 44) may be included. Additionally, the plurality of solar cells 150 may be connected (for example, connected in series) in the first direction by the wiring member 142 to form a solar cell string. As an example, the wiring member 142 electrically connects two neighboring solar cells 150 (i.e., first and second solar cells 151 and 152) among the plurality of solar cells 150. For reference, when the mother solar cell (150m) shown in FIG. 4 is cut along the cutting line CL, first and second solar cells 151 and 152 of the shape shown in FIG. 5 are manufactured. At this time, whether each solar cell 150 is a cut surface formed by cutting along the cutting line CL or a non-cut surface can be determined by the presence of an inclined portion 150a, a difference in surface roughness on a microscope, a difference in surface morphology, etc. You can.

As an example, Figures 3 and 4 illustrate that the solar cell 150 is composed of a silicon crystalline solar cell. When composed of silicon crystalline solar cells, excellent power generation can be achieved. For example, the solar cell 150 includes a semiconductor substrate 160, conductive regions 20 and 30 formed in or on the semiconductor substrate 160, and conductive regions 20 and 30. ) and includes electrodes 42 and 44 connected to the terminal. Here, the semiconductor substrate 160 may be composed of a crystalline semiconductor (e.g., single crystal or polycrystalline semiconductor, for example, single crystal or polycrystalline silicon) containing a single semiconductor material (e.g., group 4 element). The conductive regions 20 and 30 may include a first conductive region 20 and a second conductive region 30, and the first or second conductive region 20 and 30 may be connected to the semiconductor substrate 160. ) may be composed of a doped region constituting part of a semiconductor layer, or an amorphous, microcrystalline, or polycrystalline semiconductor layer. The electrodes 42 and 44 may include a first electrode 42 connected to the first conductive region 20 and a second electrode 44 connected to the second conductive region 30 . In addition, it may further include first and second passivation films 22 and 32 and an anti-reflection film 24.

At this time, the first electrode 42 includes a plurality of finger lines 42a positioned in parallel in the minor axis direction (second direction) (y-axis direction in the drawing) and intersects the finger lines 42a (as an example). , orthogonal) may be provided with a bus bar 42b that is located in a direction (i.e., the first direction or long axis direction) and corresponds to the wiring member 142 (for example, one-to-one correspondence). Here, the bus bar 42b may be provided in plural numbers at predetermined intervals and may have a pad portion 422 that has a width equal to or greater than that of the wiring member 142 and is substantially connected to the wiring member 142, and the pad portion 422 may be provided at a predetermined interval. A line portion 421 connecting the pad portion 422 and having a width smaller than that of the line 422 and the wiring member 142 may be further provided.

At this time, the plurality of pad portions 422 may include two outer pads located on both sides of the bus bar 42b in the second direction and an inner pad disposed at a uniform distance from the inside thereof. As a result, the attachment characteristics of the attached wiring member 142 can be improved. The outer pad may have a larger area (eg, greater length) than the inner pad. At this time, the outer pad may be located inside the outermost finger line 42a located at the edge when viewed in the first direction. As a result, the force applied to the wiring member 142 near the edge can be minimized.

In the drawing, the first electrode 42 further includes a border line 42c. The border line 42c may entirely connect the ends of the plurality of finger lines 42a near both edges.

And in this embodiment, the solar cell 150 may be divided into an electrode area and an edge area. The electrode area is an area where finger lines 42a formed parallel to each other are arranged at a uniform pitch, and each solar cell 150 may include a plurality of electrode areas divided by a bus bar 42b. Additionally, the edge area includes between two adjacent electrode areas and may be an area located adjacent to the edge of the semiconductor substrate 160 or the solar cell 150. At this time, the edge area may be an area where the first electrode 42 is located at a density lower than that of the finger lines 42a in the electrode area, or may be an area where the first electrode 42 is not located. In this embodiment, the edge area further includes an edge electrode portion 42d, and an edge portion 42e dividing the electrode area and the edge area is further included. The edge portion 42e may have a V-shape connecting the ends of the finger lines 42a spaced apart from each other near the end of the bus bar 42b, and the edge electrode portion 42d is formed of two edge portions 42e. It is located between and may include a portion perpendicular to and/or parallel to the finger line 42a. By stably fixing the end of the wiring member 142 by the edge area, it is possible to prevent problems such as short circuits that may occur if the wiring member 142 is located too close to the edge. And the current generated in the edge area can be transmitted to the wiring material 142 by the edge electrode portion 42d.

The above-described border line 42c, edge electrode portion 42d, and edge portion 42e may have the same or similar width as the finger line 42a and may be made of the same material as the finger line 42a. However, it is also possible to omit the border line 42c, the edge electrode portion 42d, the edge portion 42e, etc.

Similarly, the second electrode 44 may also include a finger line and a bus bar, and the bus bar may include a line portion and a pad portion. In addition, it may further include a border line, an edge electrode portion, and a border portion. However, the present invention is not limited to this, and various modifications are possible, such as the second electrode 44 having a different shape from the first electrode 42 or being formed as a whole.

If the first and/or second electrodes 42 and 44 have this structure, they have a relatively small width and when using a large number of wiring members 142, the area of the bus bar 42b is reduced and the connection with the wiring members 142 is reduced. Adhesion can be improved. For example, the width or diameter of the wiring member 142 is 1 μm or less (for example, 200 μm to 600 μm), and the length from the center in one direction and the direction crossing this is substantially the same (for example, circular). It may have or include a rounded part. As a result, the wiring material 142 may induce reflection or diffuse reflection. As a result, the light reflected from the round surface of the wire constituting the wiring member 142 is reflected or totally reflected in the first cover member 110 or the second cover member 120 located on the front or rear side of the solar cell 150. It can be allowed to re-enter the solar cell 150. As a result, the output of the solar panel 100 can be effectively improved. This wiring material 142 includes a core layer 142a made of metal, and a solder layer 142b formed on the surface of the core layer 142a and containing a solder material to enable soldering with the electrodes 42 and 44. It can be included. Then, the wiring member 142 can be easily attached and electrically connected to the solar cell 150 by applying heat while positioning the wiring member 142 on the solar cell 150.

At this time, as an example, the solar cell 150 used in this embodiment has a shape that is substantially the same in length in one direction and the direction intersecting it (for example, it has a roughly square shape with inclined portions 150a at each corner). The mother solar cell (150 m) having an octagonal shape can be cut in one direction along the cutting line CL to have a long axis and a short axis. Then, the resistance caused by the current in each solar cell 150 can be reduced while using existing manufacturing equipment, and the output loss of the solar cell module 100 including the solar cell 150 can be reduced. As an example, in the drawing, two solar cells 150 are formed by cutting the mother solar cell (150m) through the center, and each solar cell 150 is provided with 3 to 11 wiring members 142. did. However, the present invention is not limited to this, and the mother solar cell (150m) can be cut into three or more solar cells (150) and used. In this embodiment, a solar cell 150 cut from the mother solar cell 150 m in a direction parallel to the bus bar 42b or in the long axis direction is used. Then, the finger line 42a is formed in the minor axis direction, the bus bar 42b is formed in the long axis direction, and the wiring member 142 extends along the long axis direction to connect the first and second solar cells 151 and 152 along the long axis. You can connect in any direction.

Accordingly, the length of the solar cell 150 in the direction in which the solar cell string extends may be greater than the width of the solar cell 150 in the direction intersecting it. In addition, a plurality of solar cell strings are provided in the short axis direction of the solar cell 150, and solar cells located on both sides of the plurality of solar cells 150 included in the plurality of solar cell strings adjacent to the short axis direction of the solar cell 150 The inclined portions 150a may be positioned to be symmetrical to each other. That is, it is possible to arrange a plurality of solar cells 150 in the same shape as the mother solar cell (150m) in the short axis direction of the solar cell 150.

Here, the conductive connector 145 alternately connects both ends of the wiring members 142 of the solar cells 150 (i.e., solar cell strings) that are connected by the wiring members 142 to form one row. . The conductive connector 145 may be disposed in a direction crossing the end of the solar cell string. This conductive connector 145 can connect adjacent solar cell strings to each other, or connect the solar cell string or solar cell strings to a junction box (not shown) that prevents reverse flow of current. The conductive connector 145 connecting the plurality of solar cell strings 150 may extend parallel to the minor axis direction of the solar cell 150. The material, shape, connection structure, etc. of the conductive connector 145 may be modified in various ways, and the present invention is not limited thereto.

With the above-described structure, the solar cells 150 can be connected to each other without overlapping parts while having a truncated structure, thereby improving the area contributing to photoelectric conversion. Additionally, the mother solar cell (150m) is cut in a direction intersecting the finger line 42a and cut in a direction parallel to the finger line 42a, so that the finger line 42a is not removed or damaged as a whole. Accordingly, the loss of the finger line 42a can be minimized to prevent a decrease in the efficiency of the solar cell 150, and a separate change in electrode design is not required. In addition, the mother solar cell can be formed using existing manufacturing equipment, and the wiring material 142 can be attached to the solar cell 150 using existing tabbing equipment, thereby simplifying the manufacturing process, which will be discussed later. This will be described in detail with reference to FIGS. 5 and 6.

In this embodiment, the solar cell 150 is formed by cutting the mother solar cell (150 m) along the cutting line CL, so that the photoelectric conversion part (PCP) has a shape with a long axis and a short axis. In this embodiment, the cutting line CL intersects the minor axis direction or the first direction and continues in the major axis direction or the first direction parallel to the extension direction of the bus bar 42b, and is connected to a plurality of solar cells located within the mother solar cell 150 m. The battery 150 may extend long along the first direction.

As such, in this embodiment, the first and second electrodes 42 and 44 of the solar cell 150 have a certain pattern so that light can be incident on the front and back of the semiconductor substrate 160. It has a bi-facial structure. As a result, the amount of light used in the solar cell 150 can be increased, contributing to improving the efficiency of the solar cell 150.

In the above description, an example of the structure of the solar cell 150 and its connection structure that can be applied to the solar cell module 100 has been described. However, the present invention is not limited to this. Accordingly, the solar cell 150 may have a different structure and shape. For example, the semiconductor substrate 160, the conductive regions 20 and 30, the electrodes 42 and 44, the first and second passivation films 22 and 32, and the anti-reflection film 24 are made of various known materials. Alternatively, the configuration may be applied, and their positions, shapes, etc. may also be modified in various ways. Additionally, the solar cell 150 may be connected to various structural members, such as ribbons and interconnectors. In addition, although it is illustrated that a plurality of solar cell strings are provided within the solar cell module 100, one string may be provided within the solar cell module 100. Additionally, the solar cell 150 may be a solar cell having various shapes or structures using the semiconductor substrate 160, such as a tandem solar cell.

The sealing material 130 may include a first sealing material 131 located on the front of the solar cell 150 connected by the wiring material 142, and a second sealing material 132 located on the rear of the solar cell 150. You can. The first cover member 110 is located on the first sealant 131 and forms the front of the main body 10, and the second cover member 120 is located on the second sealant 132 to form the main body 10. Constructs the rear of the. The solar cell 150 is sealed by the sealing material 130, the first cover member 110, and the second cover member 120 and can be protected from external shock, moisture, ultraviolet rays, etc. Various known insulating materials may be used as the sealant 130, first cover member 110, and second cover member 120. As an example, ethylene vinyl acetate copolymer resin (EVA), polyvinyl butyral, silicon resin, ester resin, olefin resin, etc. may be used as the sealing material 130. The first cover member 110 may be made of a translucent material that allows light to pass through, and the second cover member 120 may be made of a sheet made of a translucent material, a non-transmissive material, or a reflective material. For example, the first cover member 110 may be made of a glass substrate, and the second cover member 120 may be made of a film or a sheet. The second cover member 120 has a TPT (Tedlar/PET/Tedlar) type, or is formed on at least one side of a base film (e.g., polyethylene terephthalate (PET)). PVDF) may include a resin layer. However, the present invention is not limited to this. Accordingly, the first and second sealants 131 and 132, the first cover member 110, or the second cover member 120 may include various materials other than those described above and may have various forms. For example, the first cover member 110 or the second cover member 120 may have various forms (eg, substrates, films, sheets, etc.) or materials.

Hereinafter, the tabbing process for connecting the plurality of solar cells 150 in the manufacturing process of the solar cell module 100 according to this embodiment will be described in more detail with reference to FIGS. 5 and 6 along with FIGS. 1 to 4. .

Figure 5 is a schematic plan view showing a manufacturing process of a solar cell module according to an embodiment of the present invention.

Referring to FIG. 5, in this manufacturing process, after forming a mother solar cell (reference numeral 150m in FIG. 3, hereinafter the same) including an area corresponding to a plurality of solar cells 150, the mother solar cell (150m) is cut. Cut completely along the line (CL). After the plurality of solar cells 150 formed by cutting are positioned to have the shape of the mother solar cell (150m), they are fixed with a temporary fixing member (FM) to maintain the shape of the mother solar cell (150m). A heat-resistant tape or the like can be used as a temporary fixing member (FM). This is put into a tabbing device and a tabbing process is performed to perform the tabbing process corresponding to a plurality of solar cell strings, and the temporary fixing member (FM) is removed to manufacture a plurality of solar cell strings. According to this, the tabbing process is performed while the plurality of solar cells 150 corresponding to the plurality of solar cell strings are fixed by the temporary fixing member (FM), so the size, shape, etc. of the solar cells processed by the tabbing device are similar to the existing ones. Same as

The solar cell string manufactured in this way is connected by a conductive connecting material 145, and the first cover member 110, the first sealing material 131, the solar cell string, the second sealing material 132, and the second cover member 120 are connected. After sequentially positioning, a lamination process of applying heat and pressure can be performed to form the solar cell module 100.

Figure 6 is a schematic diagram showing another manufacturing process of a solar cell module according to an embodiment of the present invention. Figures 6 (a) and (b) are a plan view and a cross-sectional view, respectively, schematically showing the mother solar cell before the tabbing process, and Figure 6 (c) is a cross-sectional view schematically showing the mother solar cell after the tabbing process. , Figure 6(d) is a cross-sectional view schematically showing a plurality of solar cells manufactured by completely cutting the mother solar cell after the tabbing process.

Referring to Figures 6 (a) and (b), in this manufacturing process, after forming the mother solar cell (150m) including the area corresponding to the plurality of solar cells 150, it is formed along the cutting line (CL). A preliminary cutting line CL1 is formed by removing only a portion of the mother solar cell (150 m) in the thickness direction. For example, the preliminary cutting line CL1 may be formed through laser processing or the like. In the present invention, forming a scribe line using a laser is exemplified as an example, but other known methods such as a blade cutting method or an etching method may be used.

In that state, as shown in (c) of FIG. 6, the mother solar cell (150 m) equipped with the preliminary cutting line (CL1) is put into the tabbing device to perform a tabbing process to perform tabbing corresponding to a plurality of solar cell strings. Perform the process together.

Afterwards, as shown in (d) of FIG. 6, the part of the mother solar cell (150m) where the preliminary cutting line (CL1) is not formed is cut to ensure complete cutting to form the cutting line (CL). . This process can be formed through mechanical processing that applies physical shock.

This manufacturing process eliminates the need to use temporary fixing members (FM), thereby reducing costs and simplifying the process. In addition, the preliminary cutting line CL1 is formed before the tabbing process and complete cutting is performed after the tabbing process, so that the mother solar cell (150 m) can be completely cut while preventing or minimizing shock etc. to the solar cell string.

The solar cell string manufactured in this way is connected by a conductive connecting material 145, and the first cover member 110, the first sealing material 131, the solar cell string, the second sealing material 132, and the second cover member 120 are connected. After sequentially positioning, a lamination process of applying heat and pressure can be performed to form the solar cell module 100.

FIG. 3 illustrates that electrodes 42 and 44 corresponding to a plurality of solar cells 150 are formed continuously and continuously in the mother solar cell (150 m). And FIG. 5 illustrates that the electrodes 42 and 44 are positioned in the cut portion of the solar cell 150 adjacent to the cut portion.

However, the present invention is not limited to this. Accordingly, in the mother solar cell (150 m), a conductive region (reference numerals 20 and 30 in FIG. 4 ) and/or electrodes 42 and 44 are formed with the cutting line CL interposed corresponding to the plurality of solar cells 150. These may be formed to be spaced apart from each other. That is, the conductive regions (reference numerals 20 and 30 in FIG. 4) and/or the electrodes 42 and 44 are formed only in portions corresponding to the plurality of effective areas AA separated to correspond to each of the plurality of solar cells 150. can be formed. According to this, when cutting along the cutting line (CL), a shunt that may occur due to the conductive region (reference numerals 20 and 30 in FIG. 4) and/or the electrodes (42 and 44) being located in the area adjacent to the cutting line (CL). Problems such as these can be minimized or prevented. Various other variations are possible.

In addition, even when cutting the mother solar cell (150 m) as shown in FIG. 3 along the cutting line CL, the electrodes 42, 44) is partially removed so that the electrodes 42 and 44 can have the shape shown in FIG. 7.

According to this embodiment, when manufacturing the solar cell module 100 using the solar cell 150 having a long axis and a short axis cut from the mother solar cell, the longitudinal direction of the wiring member 142 or the bus bar 42b is aligned with the long axis Since they are parallel, loss of the finger line 42a during the cutting process can be minimized. And since there is no change in the structure of the solar cell 150 applied to the tabbing device, the cut or to-be cut solar cell 150 can be tabbed by putting it into the tabbing device in the shape of the mother solar cell (150m). That is, since the tabbing device can recognize a plurality of solar cells 150 as is, no changes are required to recognize solar cells 150 of different sizes and shapes, and the length of the wiring member 142 can be maintained as is. there is. As a result, a new tabbing device is not needed and the existing tabbing device can be used as is, and the number of tabbing can be maintained even if the number of solar cells 150 increases. As a result, the manufacturing cost and manufacturing process can be greatly improved while applying the cut solar cell 150. Additionally, by reducing the width of the solar cell 150 (i.e., the width of the solar cell string) in the direction intersecting the extension direction of the solar cell string, the risk of problems such as shading can be greatly dispersed.

Hereinafter, a solar cell module and its manufacturing method according to other embodiments of the present invention will be described in detail. Detailed description of parts that are the same or extremely similar to the above description will be omitted, and only different parts will be described in detail. Also, combining the above-described embodiments or modified examples thereof with the following embodiments or modified examples thereof also falls within the scope of the present invention.

Figure 8 is a perspective view schematically showing various examples of applying a solar cell module according to another embodiment of the present invention.

Referring to FIG. 8, the solar cell module 100 according to this embodiment includes a plurality of solar cells (reference numeral 150 in FIG. 9, hereinafter the same) and has a shape extending long in one direction (the first direction or long axis direction). It may be provided with at least one main body 10 having. In addition, the solar cell module 100 can be used in various ways by having a plurality of bodies 10 in a direction crossing one direction.

As an example, as shown in (a) of FIG. 8, the solar cell module 100 has a louver-type structure, and some or all of the plurality of main bodies 10 overlap with each other to adjust the length or amount of light. Or it can be applied to automatic blinds.

As another example, as shown in (b) of FIG. 8, the plurality of main bodies 10 are positioned perpendicular to each other so that the solar cell module 100 has a railing-type structure and may be installed on a veranda, etc. For simplicity of illustration, the fixing part that integrally fixes the plurality of main bodies 10 is not shown in Figure 8 (b). Various known configurations can be applied to the fixing part. In Figure 8 (b), the plurality of main bodies 10 are shown as being positioned perpendicular to the floor, but the plurality of main bodies 10 may be formed at an angle to the floor or may be positioned so as to have a portion that partially overlaps.

As another example, as shown in (c) of FIG. 8, the solar cell module 100 may have a sunshade-type structure installed parallel or inclined to the floor on the outside of a building. For simplicity of illustration, the fixing part that integrally fixes the plurality of main bodies 10 is not shown in Figure 8 (b). Various known configurations can be applied to the fixing part. In (b) of FIG. 8, the plurality of main bodies 10 are shown as being parallel to the floor, but the plurality of main bodies 10 may be formed at an angle to the floor or may be positioned so as to have partially overlapping portions.

Although the above description focuses on the case where the solar cell module 100 is installed in a building, the solar cell module 100 according to this embodiment can be applied to various objects and locations, such as vehicles.

FIG. 9 is a plan view showing one body 10 included in the solar cell module 100 shown in FIG. 8.

Referring to FIG. 9 , the main body 10 included in the solar cell module 100 in this embodiment includes a plurality of solar cells 150 connected along a first direction (x direction in the drawing). In the drawing, it is illustrated that the plurality of solar cells 150 are provided with one solar cell string within each body 10, but a plurality of strings may be provided within each body 10. In addition, the main body 10 is electrically connected to a plurality of solar cells 150 and may include a bypass diode 180 provided in the main body 10.

In addition, the solar cell module 100 includes a first cover member (reference numeral 110 in FIG. 1, hereinafter the same) located on the first side (e.g., front) of the plurality of solar cells 150, and a plurality of solar cells ( 150), a second cover member (reference numeral 120 in FIG. 1, hereinafter the same) located on the second surface (eg, rear) side, and a plurality of cover members between the first cover member 110 and the second cover member 120. It may further include a sealing material (reference numeral 130 in FIG. 1, hereinafter the same) for sealing the solar cell 150.

In this embodiment, the first or second cover member (see reference numerals 110 and 120 in FIG. 1) may be made of a translucent material that allows light to pass through, and may be provided as a film or sheet containing resin. As a result, the weight can be reduced so that the solar cell module 100 can be appropriately used as a louver-type structure, railing-type structure, sunshade-type structure, etc. However, the present invention is not limited to this, and at least one of the first and second cover members 110 and 120 may include a glass substrate, a non-transmissive material, or a reflective material. Various other variations are possible.

Hereinafter, the main body 10 according to this embodiment will be described in more detail with reference to FIGS. 10 and 11 along with FIG. 9.

FIG. 10 is an enlarged partial plan view of portion B of FIG. 9 , and FIG. 11 is a schematic perspective view illustrating the bypass diode 180 shown in FIG. 10 .

9 to 11, a bypass diode 180 may be installed inside each main body 10. This will be explained in more detail later.

In each body 10, the plurality of solar cells 150 include a first end solar cell 151a positioned adjacent to the first end 10a in the first direction (x-axis direction in the drawing), and a first end solar cell 151a. and a second end solar cell 152a located adjacent to the second end 10b in the direction. Each body 10 includes a first conductive connecting member 172 connected to the first electrode (reference numeral 42 in FIG. 4, hereinafter the same) of the first end solar cell 151a at the first end 10a, and 2 A second conductive connector 174 connected to the second electrode (reference numeral 44 in FIG. 4, hereinafter the same) of the second end solar cell 152a at the end 10b and extending to a portion adjacent to the first end 10a. ) can be provided. And the anode electrode 182 of the bypass diode 180 is connected to one of the first and second conductive connectors 172 and 174, and the cathode electrode 184 of the bypass diode 180 is connected to the first and second conductive connectors 172 and 174. It may be connected to another one of the conductive connectors 172 and 174. Here, terms such as first, second, etc. are used only to distinguish between each other, and the present invention is not limited thereto.

More specifically, the first conductive connecting material 172 is a first conductive connecting member 172 that is electrically and physically connected to the plurality of wiring members 142 connected to the first electrode 42 of the first end solar cell 151a at the first end 10a. It may be provided with one connection part 172a, and may further include a first terminal part 172b extending outward from the first connection part 172a. The first connection part 172a is formed in the second direction and the first terminal part 172b is formed in the first direction, so that they can be manufactured through a simple manufacturing process. In addition, the first conductive connection material 172 is formed as a single structure that integrally includes the first connection portion 172a and the first terminal portion 172b, thereby simplifying the structure. However, the present invention is not limited to this.

And the second conductive connecting member 174 is a second connection portion where the plurality of wiring members 142 connected to the second electrode 44 of the second end solar cell 152a at the second end 10b are electrically and physically connected. (174a) and an extension part (174c) extending long from the second connection part (174a) to the first end (10a), and further comprising a second terminal part (174b) extending outward from the extension part (174c). It can be provided. The extension portion 174c is positioned to be spaced apart from the plurality of solar cells 150 to prevent unwanted short circuits, etc. The second connection portion 174a is formed in the second direction, and the second connection portion 174a and the second terminal portion 174b are formed to be long along the first direction on the same line, thereby simplifying the structure. In addition, the second conductive connection material 174 is formed as a single structure including the second connection portion 174a, the extension portion 174c, and the second terminal portion 174b, and can be manufactured through a simple manufacturing process. . However, the present invention is not limited to this.

At this time, the first terminal portion 172b of the first conductive connector 172 and the second terminal portion 174b of the second conductive connector 174 pass through the first end 10a of the main body 10 to the outside. Since it is extended and located toward the first end 10a, the electrical connection structure with the other main body 10 can also be simplified. The first and second terminal portions 174b for connection to the outside are not located at the second end 10b.

Accordingly, when viewed in the second direction, the second conductive connector 174 is provided only near one edge and the second conductive connector 174 is not provided near the other edge, so when viewed in the second direction, the conductive connectors 172 and 174 )'s structure may be asymmetric. That is, the extension portion 174c and the second terminal portion 174b are located adjacent to one edge in the second direction, and the first terminal portion 172b is located adjacent to the other edge in the second direction, so that the structure can be simplified. At this time, the second conductive connector 174 may be located near one edge of the solar cell 150 where the inclined portion (chamfer portion) 150a is located. Additionally, the inclined portion 150a of the solar cell 150 may be located at a portion that overlaps with another main body 10 when installed as shown in (a) of FIG. 8 . Then, interference from other main bodies 10 can be minimized and parts that may be obscured by other main bodies 10 can be effectively utilized.

The first and second conductive connectors 172 and 174 may include various known conductive materials (eg, metal). In consideration of stable current flow, the first and second conductive connecting members 172 and 174 may have a larger width than the wiring member 142.

In this embodiment, the bypass diode 180 may be installed inside the main body 10. At this time, the entire bypass diode 180 may be provided in the main body 10 so that the bypass diode 180 is built into each main body 10. As an example, each body 10 may be provided with a cathode electrode 184 and an anode electrode 182 of the bypass diode 180. More specifically, the bypass diode 180 is located between the first sealing material 131 and the second sealing material 132 and is spaced apart from the plurality of solar cells 150, but is connected to the first and second conductive connectors 172 and 174. It may be electrically and physically connected to a plurality of solar cells 150 .

At this time, in this embodiment, the bypass diode 180 includes a p-type semiconductor layer and an n-type semiconductor layer, an anode electrode 182 connected to the p-type semiconductor layer, and a cathode electrode connected to the n-type semiconductor layer ( It may be composed of a semiconductor device containing 184). The anode electrode 182 may be connected to one of the first and second conductive connectors 172 and 174, and the cathode electrode 184 may be connected to the other one of the first and second conductive connectors 172 and 174.

As an example, the bypass diode 180 may be provided as a chip-type diode and may have a different shape or material from the solar cell 150, and the cathode electrode 184 and anode electrode 182 may also be used as a chip-type diode. ) may have a different shape or material from the first electrode 42 and the second electrode 44. Since such a chip-type diode has a thickness smaller than the horizontal and vertical widths, it can be stably positioned between the first sealant 131 and the second sealant 132 through a lamination process. Here, the ratio of the thickness of the bypass diode 180 to the thickness of the portion of the main body 10 where the bypass diode 180 is not located is 2 times or less, or the thickness of the bypass diode 180 is 0.1 mm to 0.1 mm. It could be 3mm. Then, the bypass diode 180 can be stably built into the main body 10, but the present invention is not limited to this. For example, the bypass diode 180 may have a vertical or horizontal width of 5 mm or less so as not to occupy a large area, but the present invention is not limited thereto.

The anode electrode 182 and the cathode electrode 184 of the bypass diode 180 may be connected to the first and second conductive connectors 172 and 174, respectively, by various methods. For example, the anode electrode 182 and the cathode electrode 184 of the bypass diode 180 may be connected to the first and second conductive connectors 172 and 174, respectively, by direct soldering.

In this embodiment, as an example, the bypass diode 180 is connected to the second conductive connector 174 in a portion adjacent to the first end 10a where the first connection portion 172a of the first conductive connector 172 is located. It is exemplified that the extension portion 174c is located adjacent to one edge. That is, one bypass diode 180 may be located near a corner of the main body 10 where the first and second conductive connectors 172 and 174 are adjacent to each other. Then, the structures of the first conductive connector 172 and the second conductive connector 174 can be simplified. However, the present invention is not limited to this. Accordingly, each body 10 may be provided with a plurality of bypass diodes 180.

When light is incident on the solar cell 150, a current is generated and flows through photoelectric conversion. At this time, since a voltage above a certain level is not applied to the bypass diode 180, the bypass diode is maintained in a turned-off state. On the other hand, if the solar cell 150 does not operate normally due to shading, defects, etc., a voltage higher than a certain voltage is applied to the bypass diode 180 and turns on, causing a current to flow through the bypass diode 180. It flows. Accordingly, the current to flow in the main body 10 including the solar cell 150 that is not operating normally flows in a detour along the bypass diode 180. According to this, it is possible to prevent problems caused by current concentration in other main bodies 10, such as hot spots.

In this embodiment, the bypass diode 180 is built into the main body 10 to simplify the structure of the solar cell module 100. In particular, it is difficult to use conventional bypass diodes and/or junction boxes due to miniaturization of the main body 10 with a relatively small output as in this embodiment, so a bypass diode 180 is installed within each main body 10. ) can be built in to simplify the structure and minimize the volume.

In other words, existing solar cell modules have a complex structure as they are provided with a separate junction box equipped with a bypass diode, and even if a problem occurs in one solar cell string due to the connection structure of the bypass diodes and limitations in quantity, multiple solar cell strings can be connected. Because not all solar cell strings could be used, power generation could be significantly reduced. In this embodiment, since each main body 10 is provided with a bypass diode 180, only the power generation amount of the main body 10 that does not generate power decreases, thereby minimizing the decrease in power generation.

Hereinafter, the solar cell module 100 having a plurality of the above-described main bodies 10 will be described in detail with reference to FIG. 12.

FIG. 12 is a schematic configuration diagram showing the plurality of bodies 10 included in the solar cell module 100 shown in FIG. 8 unfolded and shown together with the micro inverter 200. In FIG. 12 , an example of the polarity (i.e., (+) and (-)) of the conductive connectors 172 and 174 and the micro inverter 200 is shown to aid understanding, but the present invention is not limited thereto.

Referring to FIG. 12, in this embodiment, the solar cell module 100 includes a plurality of bodies 10, and solar cells 150 included in the plurality of bodies 10 may be connected to each other.

The above description can be applied as is to each of the plurality of main bodies 10. Here, each main body 10 may have a relatively small output (eg, 10W or more, for example, 10W to 40W). If the output of the main body 10 is less than 10W, the power generation amount is small, so even if a plurality of main bodies 10 are provided, the desired sufficient power generation amount may not be provided. If the output of the main body 10 exceeds 40W, the size or length of the main body 10 may increase, which may reduce structural stability or make it difficult to install in a narrow space.

This body 10 can have a desired output by providing a plurality of solar cells 150 in consideration of the output of the solar cells 150. As an example, the above-mentioned solar cells 150 may be provided in four or more (for example, four to six or less), and the plurality of solar cells 150 may be connected in series to provide a desired output. You can. The main body 10 including a plurality of solar cells 150 connected in series may have a power generation amount proportional to the number of solar cells 150.

In addition, the solar cell module 100 can be provided with a plurality of main bodies 10 to have sufficient output as desired. That is, when a plurality of main bodies 10 with relatively small output are connected in series to have a desired output, the amount of power generation increases proportionally according to the number of main bodies 10. Therefore, the number of main bodies 10 can be adjusted to achieve the desired amount of power generation. According to this, the solar cell module 100 can be formed in various structures so that it can be used in various locations and for various purposes. In addition, since photoelectric conversion is performed using each body 10 as a basic unit, in case of shadows, defects, etc., current is prevented from flowing only to the solar cell 150 of the body 10 through the bypass diode 180. . Accordingly, only the power generation amount corresponding to the solar cell 150 located in the main body 10 is reduced. Accordingly, problems such as reduced power generation and hot spots that may be caused by shadows, defects, etc. can be effectively reduced.

Here, the plurality of bodies 10 may be electrically connected by various methods. At this time, in the plurality of main bodies 10, the first conductive connector 172 of one main body 10 may be connected to the second conductive connector 174 of the main body 10 adjacent thereto. As a result, the first and second conductive connecting members 172 and 174 of different polarities of adjacent main bodies 10 are sequentially connected on one side, so that a plurality of main bodies 10 can be connected in series. Then, the connection structure can be simplified and the space required for connection can be minimized.

For example, the first conductive connector 172 and the second conductive connector 174 of the main body 10 that are adjacent to each other may be connected to each other by the third conductive connector 176. The third conductive connector 176 may have the same or different material or structure as the first and/or second conductive connectors 172 and 174, and may be connected to the first and second conductive connectors 172 and 174 by various methods. 174). For example, both ends of the third conductive connector 176 may be connected to the first and second conductive connectors 172 and 174 by direct soldering. However, the present invention is not limited to this, and the third conductive connector 176 is formed by extending from the first or second conductive connectors 172 and 174 to form a part of the first or second conductive connectors 172 and 174. It could be. Alternatively, the third conductive connector 176 may be an electric cable.

The first conductive connector 172 and the second conductive connector 174 located on both sides of the solar cell module 100 may be connected to one terminal and the other terminal of the micro inverter 200, respectively. As an example, the first conductive connector 172 and the second conductive connector 174 may be connected to the micro inverter 200 by the fourth conductive connector 178. The fourth conductive connector 178 may have a material or structure that is the same as or different from at least one of the first to third conductive connectors 172, 174, and 176, and can be connected to the first and second conductive connectors by various methods. It can be connected to (172, 174). As an example, the fourth conductive connector 178 may be connected to the first and second conductive connectors 172 and 174, respectively, by direct soldering. However, the present invention is not limited to this, and the fourth conductive connector 178 is formed by extending from the first or second conductive connectors 172 and 174 to form a part of the first or second conductive connectors 172 and 174. It could be. Alternatively, the fourth conductive connector 178 may be an electric cable.

As the micro inverter 200, a micro inverter with a capacity to process power generation according to the number of main bodies 10 can be used. As an example, the micro inverter 200 may have a capacity of 200W to 300W. However, the present invention is not limited to this. Accordingly, the power generation amount of the solar cell module 100 can be increased depending on the number of main bodies 10, and thus has infinite scalability, so it is possible to have a micro inverter with a corresponding large capacity. The micro inverter 200 can be used in the solar cell module 100 and may have various known structures. There may be one micro inverter 200, or in some cases, multiple micro inverters 200 may be provided. And the micro inverter 200 can be installed in various locations, verandas, walls, terminal boxes, fixed parts of the solar cell module 100, etc.

In the above-described embodiments, it is illustrated that the extended portion 174c of the second conductive connector 174 is located toward the front. However, the present invention is not limited to this, and the portion corresponding to the extension portion 174c can be folded along the fold line BL shown in FIG. 13 so that the portion where the extension portion 174c is located is located at the rear. The folding process according to the fold line BL may be performed after the process of laminating the sealing material 130 and the first and second cover members 110 and 120, and may be connected to the solar cell 150 before the lamination process. It can be performed in When performing a folding process performed before the lamination process, in order to prevent unnecessary short-circuiting with other parts of the solar cell 150, the first conductive connector 172, and the second conductive connector 174, the solar cell 150 ) An insulating layer can be placed between the back of the back and the extension portion (174b). Various other variations are possible.

According to this embodiment, electrical connection is possible by positioning the solar cell 150 by positioning the wiring material 142 along the long axis direction of the solar cell 150 and extending the second conductive connecting material 174 only at one edge. do. This allows the structure to be simplified and resistance to be reduced. On the other hand, if the wiring member 142 is located along the short axis direction of the solar cell 150, the structure becomes complicated because the conductive connecting members 172 and 174 must be located at both edges.

The first and second conductive connecting members 172 and 174 are connected to the solar cell string manufactured as in the above-described embodiment, and the first cover member 110, the first sealing material 131, and the first and second conductive After sequentially placing the solar cell string to which the connecting materials 172 and 174 are connected, the second sealing material 132, and the second cover member 120, a lamination process of applying heat and pressure is performed to form the main body 10. (10) can be connected to the third and fourth conductive connectors 176 and 178 to form the solar cell module 100.

The features, structures, effects, etc. described above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified and implemented in other embodiments by a person with ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

100: solar cell module
10: body
110: first cover member
120: first cover member
130: sealant
142: Wiring material
145: Conductive connector
150: solar cell
172: First conductive connecting material
174: Second conductive connecting material

Claims (13)

A plurality of solar cells including first and second solar cells and connected to each other along the long axis;
a solar cell string including a plurality of wiring members connecting the first solar cell and the second solar cell;
Comprising at least one body including the plurality of solar cells and the solar cell string,
Each of the plurality of solar cells includes a photoelectric conversion unit having a long axis and a short axis that intersect each other, a first electrode located on one surface of the photoelectric conversion unit and connected to the photoelectric conversion unit, and a second electrode located on the other surface of the photoelectric conversion unit. Contains an electrode,
The plurality of solar cells are cut in the long axis direction and divided into the first and second solar cells,
The plurality of wiring members extend in the long axis direction to connect the first solar cell and the second solar cell in the long axis direction,
The first electrode includes a plurality of finger lines located parallel to each other along the minor axis direction, and includes a bus bar located along the major axis direction and corresponding to the wiring member,
The main body is,
Further comprising a first conductive connector connected to the first end of the solar cell string, and a second conductive connector connected to the second end of the solar cell string and extending to a portion adjacent to the first end,
The first conductive connecting material extends along the minor axis direction from the first end side, a first connection portion formed in the minor axis direction, and a first terminal portion extending outward from the first connection portion and formed in the major axis direction. Including,
The second conductive connecting material includes a second connection part extending along the minor axis direction from the second end, a second terminal part extending outward from the second connection part and formed in the major axis direction, and the second connection part. an extension portion extending along one edge while being spaced apart from the plurality of solar cells along the major axis direction from a portion adjacent to the first end;
The extended portion extends along one edge in the minor axis direction and is not provided on the other edge,
The main body is connected by the first connection part and the second connection part,
A solar cell module in which the main body and the outside are connected by the first terminal portion and the second terminal portion. According to paragraph 1,
A solar cell module in which the length of the solar cell in the direction in which the solar cell string extends is longer than the width of the solar cell in the direction intersecting the solar cell string. According to paragraph 1,
A plurality of solar cell strings are provided in the minor axis direction,
A solar cell module in which inclined portions of solar cells located on both sides of a plurality of solar cells included in the plurality of solar cell strings adjacent in the minor axis direction are positioned to be symmetrical to each other. According to paragraph 1,
A plurality of solar cell strings are provided in the minor axis direction,
A solar cell module in which a conductive connector connecting the plurality of solar cell strings extends parallel to the minor axis direction of the solar cells. delete According to paragraph 1,
The bus bar is a solar cell module including a plurality of pad portions located in the long axis direction. According to clause 6,
The plurality of wiring members include a core layer and a solder layer located on an outer surface of the core layer,
A solar cell module in which the plurality of wiring members are fixed to the plurality of pad portions by the solder layer. delete delete delete forming a mother solar cell including a plurality of solar cells;
Cutting part or all of the mother solar cell in the thickness direction;
Tabbing the plurality of solar cells in a state positioned in the shape of the mother solar cell.
Including,
In the cutting step, the mother solar cell is completely cut in the thickness direction,
Before the tabbing step, it further includes a temporary fixing step of fixing the plurality of solar cells formed from the mother solar cell using a temporary fixing member to form the plurality of solar cells into the shape of the mother solar cell,
A method of manufacturing a solar cell module further comprising removing the temporary fixing member after the tabbing step. forming a mother solar cell including a plurality of solar cells;
Cutting part or all of the mother solar cell in the thickness direction;
Tabbing the plurality of solar cells in a state positioned in the shape of the mother solar cell.
Including,
In the cutting step, the mother solar cell is partially cut in the thickness direction,
A method of manufacturing a solar cell module further comprising a complete cutting step of completely cutting another portion of the mother solar cell in the thickness direction after the tabbing step. According to clause 12,
The cutting step is performed by laser processing using a laser,
The method of manufacturing a solar cell module in which the complete cutting step is performed by mechanical processing that applies physical shock to the mother solar cell.

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