JP2011009460A - Method for manufacturing solar cell module, and device for manufacturing solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for manufacturing a solar cell module having a wiring material connected to an output extracting electrode with high precision.SOLUTION: The method for manufacturing the solar cell module having a first and a second solar cell elements includes the steps of: acquiring first position information on a first output extracting electrode or first current collecting electrode of a first solar cell element, positioning the first output extracting electrode of the first solar cell element and the wiring material 6, and electrically connecting the first output extracting electrode of the first solar cell element and the wiring material 6 to each other; and acquiring second position information on a second output extracting electrode or first current collecting electrode of a second solar cell element, positioning the second output extracting electrode of the second solar cell element and the wiring material 6 on the basis of the second position information, and electrically connecting the second output extracting electrode of the second solar cell element and the wiring material 6 to each other.

Description

  The present invention relates to a method for manufacturing a solar cell module and an apparatus for manufacturing a solar cell module.

  In recent years, the spread of solar cell modules has been promoted from the viewpoint of environmental protection. In general, a solar cell module is, in order from the light-receiving surface side, a solar cell element array (solar cell string) whose periphery is protected by a sheet-like filler made of a translucent substrate, a transparent thermosetting resin, and the like, and a back surface It is obtained by laminating and integrating a back surface protective material for protecting the surface.

  In the solar cell element forming the solar cell string, an output extraction electrode called a bus bar electrode is formed on the light receiving surface side and the non-light receiving surface side of the silicon substrate, and a current collecting electrode called a finger electrode is formed on the light receiving surface side. The solar cell string is formed by aligning the outer shapes of the solar cell elements as a reference, joining the output extraction electrodes of adjacent solar cell elements with a wiring material via solder, and electrically connecting them.

  In such a solar cell module, improvement in power generation efficiency is required, and in order to improve the conversion efficiency of the solar cell element, the effective light receiving area ( It has been necessary to increase the total area of the solar cell element−the electrode area). Furthermore, since noble metals such as silver are used as the material of the electrode, it has been required to reduce the electrode from the viewpoint of resource saving (see, for example, Patent Document 1).

  Also, in order to increase the effective light receiving area, in the back contact type solar cell element in which the output extraction electrode which is a non-power generation part is provided only on the non-light receiving surface side, the positive electrode and the negative electrode of the output extraction electrode are provided only on the non light receiving surface side Because of the high integration, a technique for connecting the wiring material to the output extraction electrode with high accuracy has been demanded.

JP-A-2005-116786

  However, in the conventional method for manufacturing a solar cell module, as shown in FIG. 8, the solar cell string is formed by aligning the outer shape of the solar cell element 101 as a reference, and therefore, the output extraction electrode 102 is printed on the silicon substrate. It was necessary to increase the width of the output extraction electrode 102 by the amount of tolerance in consideration of the time deviation and the variation in the outer shape of the silicon substrate. For this reason, if the output extraction electrode 102 of the solar cell element 101 is simply formed small, a deviation occurs when the wiring member 103 is disposed, and the junction area between the wiring member 103 and the output extraction electrode 102 is reduced, resulting in poor conduction. May occur.

  Further, as shown in FIG. 9, when the wiring member 103 is displaced from the output extraction electrode 102 and joined, stress concentration is likely to occur, so that the crack 104 is likely to occur.

  Therefore, an object of the present invention is to provide a solar cell module manufacturing method and a solar cell module manufacturing apparatus for connecting a wiring member to an output extraction electrode with high accuracy.

  In the method for manufacturing a solar cell module of the present invention, a first output extraction electrode and a first current collecting electrode electrically connected to the first output extraction electrode are provided on a first surface of a substrate, A first and second solar cell elements each having a second output extraction electrode provided on a second surface corresponding to the rear surface of the surface; the first output extraction electrode of the first solar cell element; A method for manufacturing a solar cell module, wherein the second output extraction electrode of the second solar cell element is electrically connected with a wiring material and the first and second solar cell elements are arranged, 1st output extraction electrode of 1 solar cell element or 1st position information of the 1st current collection electrode is acquired, and the 1st output extraction electrode of the 1st solar cell element based on the 1st position information And the wiring material, and the first output of the first solar cell element A step of electrically connecting the output electrode and the wiring member; and acquiring second position information of the second output extraction electrode or the first current collecting electrode of the second solar cell element; Based on the information, the second output extraction electrode of the second solar cell element and the wiring material are aligned, and the second output extraction electrode of the second solar cell element and the wiring material are electrically connected. And a step of connecting to each other.

  According to another method of manufacturing a solar cell module of the present invention, a current collecting electrode is provided on a first surface of a substrate, and the current collecting electrode is disposed on a second surface corresponding to the back surface of the first surface. It has the 1st and 2nd solar cell element provided with the output extraction electrode electrically connected, The said output extraction electrode of the said 1st solar cell element and the said output extraction of the said 2nd solar cell element A method of manufacturing a solar cell module, wherein the first and second solar cell elements are arranged by electrically connecting electrodes with a wiring material, wherein the output extraction electrode of the first solar cell element or First position information of the current collecting electrode is obtained, and based on the first position information, the output extraction electrode of the first solar cell element and the wiring material are aligned, and the first solar cell Electrically connecting the output extraction electrode of the element and the wiring member; Obtaining the second position information of the output extraction electrode or the collector electrode of the second solar cell element, and based on the second position information, the output extraction electrode and the wiring member of the second solar cell element And a step of electrically connecting the output extraction electrode of the second solar cell element and the wiring member.

  In the solar cell module manufacturing apparatus of the present invention, a first output extraction electrode and a first current collecting electrode electrically connected to the first output extraction electrode are provided on the first surface of the substrate, and the first output electrode is provided. A first and second solar cell elements each having a second output extraction electrode provided on a second surface corresponding to the rear surface of the surface; the first output extraction electrode of the first solar cell element; A solar cell module manufacturing apparatus in which the first and second solar cell elements are arrayed by electrically connecting the second output extraction electrode of the second solar cell element with a wiring member. 1st position information used as position information of the 1st output extraction electrode or the 1st current collection electrode of 1 solar cell element, and the 2nd output extraction electrode or the 1st current collection electrode of the 2nd solar cell element A position information acquisition device that acquires second position information that is position information of Based on one position information and the second position information, the first output extraction electrode of the first solar cell element, the second output extraction electrode of the second solar cell element, and alignment with the wiring member And a connection device for electrically connecting the first output extraction electrode of the first solar cell element, the second output extraction electrode of the second solar cell element, and the wiring member , Provided.

  Moreover, the manufacturing apparatus of the other solar cell module of this invention is provided with the current collection electrode on the 1st surface of a board | substrate, and the said current collection electrode on the 2nd surface equivalent to the back surface of the said 1st surface. It has the 1st and 2nd solar cell element provided with the output extraction electrode electrically connected, The said output extraction electrode of the said 1st solar cell element and the said output extraction of the said 2nd solar cell element A device for manufacturing a solar cell module, wherein the first and second solar cell elements are arranged by electrically connecting electrodes with a wiring material, wherein the output extraction electrode of the first solar cell element or Position information acquisition device for acquiring first position information as position information of the current collecting electrode and second position information as position information of the output extraction electrode or the current collecting electrode of the second solar cell element; Based on the first position information and the second position information, An alignment device for aligning the output extraction electrode of the first solar cell element, the output extraction electrode of the second solar cell element, and the wiring member; and the output of the first solar cell element And a joining device that electrically joins the output electrode, the output extraction electrode of the second solar cell element, and the wiring member.

  According to the method for manufacturing a solar cell module of the present invention, the positioning of the solar cell elements is not performed with the outer shape of the substrate of the solar cell elements but with the electrode formed on the substrate, so that the variation in the outer shape of the substrate The positional deviation of the solar cell elements caused by the above can be reduced, and the solar cell elements can be arranged with high accuracy. As a result, according to the present invention, the output extraction electrodes of adjacent solar cell elements can be accurately connected with the wiring material, and the positional deviation between the output extraction electrode and the wiring material can be reduced.

  Further, according to the manufacturing apparatus of the present invention, the positioning of the solar cell elements is performed by the electrode formed on the substrate, not by the outer shape of the substrate of the solar cell elements, and thus occurs due to variations in the outer shape of the substrate. The positional deviation of the solar cell elements can be reduced, and the solar cell elements can be arranged with high accuracy. As a result, according to the present invention, the output extraction electrodes of adjacent solar cell elements can be accurately connected with the wiring material, and the positional deviation between the output extraction electrode and the wiring material can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The solar cell module manufactured by the manufacturing method of the solar cell module which concerns on embodiment of this invention is shown, (a) is a disassembled perspective view which decomposes | disassembles and shows the laminated structure of a solar cell module, (b) is the sun. The top view which looked at the battery string from the light-receiving surface side, (c) is the top view which looked at the solar cell matrix from the light-receiving surface side. The solar cell element used for the manufacturing method of the solar cell module which concerns on embodiment of this invention is shown, (a) is a side view, (b) is a top view by the side of a light-receiving surface, (c) is a non-light-receiving surface. FIG. It is a perspective view which shows the manufacturing apparatus of the solar cell module which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the solar cell module which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the solar cell module which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the solar cell module which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the solar cell module which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the solar cell module which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the solar cell module which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the manufacturing method of the solar cell module which concerns on embodiment of this invention. The embodiment which concerns on the manufacturing method of the other solar cell module of this invention is shown, (a) is a top view which expands and shows a part by the side of the light-receiving surface of a solar cell element, (b) is a solar cell element. The top view which expands and shows a part of non-light-receiving surface side, (c) is a perspective view which shows a mode that a solar cell string is formed. It is a schematic diagram for demonstrating the manufacturing method of the solar cell module which concerns on other embodiment of this invention. It is a top view which shows the mode of the solar cell string manufactured with the conventional manufacturing method. It is a top view which shows what joined the wiring material to the solar cell element by the conventional manufacturing method.

  Hereinafter, embodiments of a solar cell module manufacturing method and a solar cell module manufacturing apparatus according to the present invention will be described with reference to the accompanying drawings. First, the solar cell module produced with the manufacturing method of the solar cell module which concerns on this embodiment, or the manufacturing apparatus of a solar cell module is demonstrated.

  As shown in FIG. 1A, the solar cell module X connects a translucent substrate 1, a light receiving surface side filler 2, and a solar cell string 3a formed by connecting a plurality of solar cell elements 3. The solar cell matrix 3b, the non-light-receiving surface side filler 2 ', and the back surface protective material 4 are sequentially laminated. As shown in FIG. 1B, the solar cell string 3 a is formed by electrically connecting a plurality of solar cell elements 3 with wiring members 6. As shown in FIG. 1C, the solar cell matrix 3 b is formed by connecting solar cell strings 3 a in parallel with wiring conductors 5.

  The translucent substrate 1 is not particularly limited as long as it is a member that allows light to be incident on the solar cell element 3. For example, the light transmissive substrate 1 is made of glass such as white plate glass, tempered glass, heat ray reflective glass, or a polycarbonate resin. A high-rate substrate may be used.

  The fillers 2 and 2 'have a role of sealing the solar cell element 3, and are mainly composed of, for example, ethylene vinyl acetate copolymer (EVA) or polyvinyl butyral (PVB), and have a thickness of 0 by an extruder. A sheet formed in a sheet shape of about 4 to 1 mm is used. And what was shape | molded in the sheet form is cut | disconnected and used. The fillers 2 and 2 'contain a crosslinking agent.

  The back surface protective material 4 has a role of protecting the filler 2 ′ and the solar cell element 3. For the back surface protective material 4, for example, PVF (polyvinyl fluoride), PET (polyethylene terephthalate) PEN (polyethylene naphthalate), or a laminate of these can be used.

  The wiring conductor 5 and the wiring material 6 are appropriately formed so that a surface of a low-resistance metal conductor such as copper or aluminum is solder-coated with a thickness of about 20 μm to 70 μm by plating or dipping so as to have a long shape. It can be used after being cut to a proper length.

  Next, the detail of a solar cell element is demonstrated. As shown in FIG. 2A, the solar cell element 3 includes a substrate 7, a first output extraction electrode 8a provided on a first surface corresponding to the light receiving surface of the substrate 7, and a first surface A second output extraction electrode 8 b provided on the second surface corresponding to the non-light-receiving surface of the substrate 7. In addition, the solar cell element 3 includes a first current collecting electrode 9 provided on the light receiving surface (first surface) side and a second current collecting electrode 10 provided on the non-light receiving surface (second surface) side. And having.

  The substrate 7 has a photoelectric conversion function for converting incident light into electricity. The material of the substrate 7 is not particularly limited. For example, a silicon substrate made of polycrystalline silicon, single crystal silicon or the like, a substrate in which a thin film made of a compound semiconductor such as amorphous silicon or CIGS is formed on a glass plate, or the like. Can be used. When silicon is used for the substrate 7, for example, a silicon ingot is manufactured from a silicon material by a pulling method or a casting method, and then the silicon ingot is sliced to 100 μm to 300 μm with a multi-wire saw or the like.

  The solar cell element 3 is provided on the light receiving surface side so that the first output extraction electrode 8a and the first current collecting electrode 9 are orthogonal to each other, and carriers generated from the substrate 7 are absorbed by the first current collecting electrode 9. The output can be taken out from the first output extraction electrode 8a that is collected and electrically connected to the current collection electrode 9. In the present embodiment, the first output extraction electrode 8a and the first current collection electrode 9 are provided so as to be orthogonal to each other, but the first output extraction electrode 8a and the first current collection electrode 9 are electrically connected. For example, it may be formed along the direction in which the output extraction electrode 8 a is inclined with respect to the longitudinal direction of the first current collecting electrode 9. For example, when the substrate 7 is a silicon substrate, the first output extraction electrode 8a and the current collecting electrode 9 are made of, for example, a silver paste made into a paste by adding silver powder of an electrically conductive metal powder, an organic vehicle, and glass frit. It is produced by baking and baking at a maximum temperature of 600 to 800 ° C. for about 1 to 30 minutes after coating and drying on a silicon substrate by a screen printing method.

  The solar cell element 3 is provided with a second current collecting electrode 10 that collects the generated carriers on substantially the entire surface on the non-light-receiving surface side, and a plurality of second outputs provided on the second current collecting electrode 10. The output can be taken out from the take-out electrode 8b. When the substrate 7 is a silicon substrate, the second current collecting electrode 10 is made of, for example, a silver paste made into a paste by adding aluminum powder of an electrically conductive metal powder, an organic vehicle, and glass frit, for example, by screen printing. It is produced by baking and baking at a maximum temperature of 600 to 800 ° C. for about 1 to 30 minutes after coating and drying on the substrate. In addition, the 2nd output extraction electrode 8b can be produced with the manufacturing method similar to the 1st output extraction electrode 8a mentioned above.

  In order to fix the positional relationship between the electrodes on the light-receiving surface side and the non-light-receiving surface side during printing, it is preferable to perform alignment on one side of the silicon substrate and print on the front and back surfaces to form electrodes.

  The solar cell element 7 manufactured through a plurality of processes as described above includes tolerances in the outer shape of the silicon substrate 7 and the printing position of the electrodes, and the light-receiving surface side bus bar electrode 8a based on the outer shape of the silicon substrate 7. In addition, the position of the non-light-receiving surface side bus bar electrode 8b also has a tolerance.

  Next, an embodiment of a solar cell module manufacturing apparatus will be described with reference to FIG.

  The solar cell module manufacturing apparatus 11 according to the embodiment of the present invention includes a position information acquisition device 12 that acquires position information of electrodes of the solar cell element 3, a position adjustment device 13 that aligns the solar cell element 3, and The wiring member 6 includes the first output extraction electrode 8a of one solar cell element 3 (first solar cell element) and the second output extraction electrode 8b of the other solar cell element 3 (second solar cell element 3 ′). And a connection device 14 to be connected.

  The position information acquisition device 12 is adjacent to the position information (first position information) of the first output extraction electrode 8 a or the first current collecting electrode 9 of the first solar cell element 3 and the first solar cell element 3. It has a function of acquiring position information (second position information) of the second output extraction electrode 8b or the first current collecting electrode 9 of the second solar cell element 3 ′. As such position information acquisition device 12, for example, a CCD camera or a CMOS camera can be used. The position information acquisition device 12 processes the image of the solar cell element acquired by the camera with an image recognition device (not shown), and acquires first position information and second position information. Then, the acquired first and second position information is transmitted to the alignment device 13.

  The alignment device 13 has a function of arranging the first solar cell element 3 and the second solar cell element 3 ′ so as to be aligned with a desired position based on the position information obtained from the position information acquisition device 12. . As such an alignment device 13, for example, the adsorption unit 13 a that lifts the solar cell element 3, and the solar cell element 3 that is lifted by the adsorption unit 13 a can be moved in the XYZ directions and can be rotated in the XY plane. It is comprised from the conveying apparatus 13b. If such a transport device 13b is provided, the alignment device 13 can be disposed at a position that is relatively distant from the position information acquisition device 12 and the connection means 14 that are disposed at a position relatively close to the solar cell element. Therefore, the assembly of the solar cell module manufacturing apparatus becomes easy.

  The connection device 14 electrically connects the first output extraction electrode 8a of the first solar cell element 3 and the second output extraction electrode 8b of the second solar cell element 3 ′ with a wiring member 6 through a bonding material such as solder. It has a function to connect to. Such a connection device 14 includes, for example, a plurality of pressing pins 14 a that press the wiring member 6 toward the solar cell element 3 and a nozzle 14 b that can blow hot air that heats the pressed wiring member 6. The hot air discharged from the nozzle 14b melts the bonding material such as the solder of the wiring material 6 coated in advance, whereby the output extraction electrode and the wiring material can be easily bonded. If the wiring material 6 is not coated with a bonding material, a mechanism for supplying a bonding material for bonding the output extraction electrode and the wiring material may be provided separately.

  In addition to the above-described configuration, the solar cell module manufacturing apparatus 11 includes, as shown in FIG. 3, for example, a solar cell element that supports and transports a solar cell element and a solar cell element to which the wiring member 6 is connected. You may provide the transport apparatus 16 which conveys in the sequence direction of a battery element, the wiring material supply apparatus 17 etc. which supply the wiring material 6 on a solar cell element.

  Next, an embodiment of a method for manufacturing a solar cell module of the present invention will be described with reference to FIGS.

  First, the wiring material (first wiring material 6a) is placed at a predetermined position on the base 15 by the wiring material supply device 17 shown in FIG. A state where the wiring member 6a is placed on the base 15 is shown in FIG. 4A.

  Next, as shown in FIG. 4B, one solar cell element (first solar cell element 3) is taken out by the adsorbing part 13 a, and the first solar cell element 3 used as a reference by the position information acquisition device 12 is used. The position information (first position information) of the first current collecting electrode 9 is acquired and placed on the pedestal 15 by the alignment device 13 so that the first current collecting electrode 9 is at a predetermined position. At this time, the 1st solar cell element 3 is arrange | positioned so that the 2nd output extraction electrode 8b may be located on the wiring material 6a.

  Next, as shown in FIG. 4C, the pedestal 15 is moved along the arrangement direction of the solar cell elements, the first solar cell element 3 is arranged under the connection device 14, and the wiring material supply device 17 performs wiring. The material (second wiring material 6 b) is placed on the first output extraction electrode 8 a of the first solar cell element 3.

  Next, as shown in FIG. 4D, hot air is blown and heated from the hot air nozzle 16 b while pressing the wiring member 6 a toward the first solar cell element 3 with the pressing pin 14 a of the connecting device 14. The first output extraction electrode 8a and the wiring material 6b, and the second output extraction electrode 8b and the wiring material 6a are bonded to each other by a bonding material (in this embodiment, solder).

  Next, as shown in FIG. 4E, the second solar cell element 3 ′ is taken out by the adsorbing portion 13a, and the position information acquisition device 12 uses the position information acquisition device 12 to detect the position information (first 2 position information) is obtained and placed on the wiring member 6a arranged on the base 15 so that the first collecting electrode 9 is in a predetermined position by the alignment device 13.

  Finally, as shown in FIG. 4F, after the wiring material (wiring material 6c) is arranged on the first output extraction electrode 8a of the second solar cell element 3, the first output extraction electrode 8a is formed by the hot air described above. By connecting the wiring member 6c and the second output extraction electrode 8b and the wiring member 6b with the bonding material, the first and second solar cell elements are electrically connected with the wiring material, and this is repeated. The solar cell string 3a is produced.

  Next, alignment by the electrodes of the solar cell element will be described. As shown in FIG. 5, the solar cell element may have a variation in the outer shape due to problems during manufacture and the like. In such a case, if the solar cell elements are aligned with respect to the outer shape of the solar cell elements, it becomes difficult to perform positioning with high accuracy. Therefore, in the present embodiment, the first solar cell elements 3 and the second solar cell elements 3 ′ arranged alternately are aligned with respect to the first current collecting electrode 9 as shown in FIG. Is going. Specifically, based on the acquired position information (first and second position information), at least one of the first current collecting electrodes 9 of each solar cell element 3 and the solar cell element 3 ′ (in this embodiment, In FIG. 5, the first current collecting electrode 9, which is arranged at the top, is spaced a predetermined distance L in the Y direction, and the end portions of the first current collecting electrode 9 are aligned in the X direction. Each solar cell element is arranged.

  Thus, in this embodiment, since each solar cell element is arranged on the basis of the pattern of the 1st current collection electrode 9 instead of the external shape of the solar cell element 3, it is connected to an output extraction electrode. The displacement of the wiring material can be reduced. Further, in this embodiment, since the positioning of the output extraction electrode and the width of the wiring material can be made substantially the same by such a highly accurate positioning, it is effective to occupy the total light receiving area (the entire cell area). The ratio of the light receiving area (total cell area-electrode area) can be increased to improve the power generation efficiency.

  In the present embodiment, the positioning is performed based on the position information of the first current collecting electrode 9 in each solar cell element. However, the present invention is not limited to such a form. For example, the first output The position information of the extraction electrode 8a and the second output extraction electrode 8b may be acquired to position the solar cell element.

  Next, another embodiment of the solar cell module manufacturing method and solar cell module manufacturing apparatus will be described.

  In the solar cell module X ′ manufactured by the manufacturing method or the manufacturing apparatus according to the present embodiment, as shown in FIGS. 6A and 6B, the light receiving surface side (first side) of the solar cell element 3 ″ is shown. The output extraction electrode is not disposed on the surface), and a conducting portion 8 ′ for electrically connecting the collector electrode 9 and the output extraction electrode 8 provided on the non-light-receiving surface side (second surface). Is different from the first solar cell element 3 and the second solar cell element 3 ′. Therefore, in this embodiment, as shown in FIG.6 (c), as for each solar cell element, the output extraction electrodes 8 provided in the non-light-receiving surface side are electrically connected by the wiring material 6. FIG.

  Thus, in this embodiment, the configuration of the solar cell element of the solar cell module is only different from the above-described embodiment, and the configuration of the solar cell module manufacturing apparatus is the same. Specifically, the solar cell module manufacturing apparatus according to the present embodiment includes the first position information and the output output of the second solar cell element, which are the position information of the output extraction electrode or the collector electrode of the first solar cell element. A position information acquisition device that acquires second position information as position information of an electrode or a collecting electrode, and the output extraction electrode of the first solar cell element based on the first position information and the second position information; An alignment device for aligning the output extraction electrode of the second solar cell element and the wiring member, the output extraction electrode of the first solar cell element, and the second solar cell element of the second solar cell element; An output extraction electrode, and a joining device for electrically joining the wiring members.

  Moreover, in the manufacturing method of the solar cell module which concerns on this embodiment, the arrangement | positioning method of a wiring material differs compared with the manufacturing method of the solar cell module which concerns on embodiment mentioned above. Specifically, in the method for manufacturing the solar cell module according to the present embodiment, the position information (first information) of the output extraction electrode or the collector electrode of the first solar cell element with respect to the wiring member arranged on the pedestal. Based on the first solar cell element, and after connecting to a part of the wiring material, the first solar cell element is connected to a part of the output electrode or the collector electrode of the second solar cell element (second information) based on the first The second solar cell element is arranged at a position where the solar cell element is not connected to the wiring material, and is different in that it is connected to the wiring material. However, all of the embodiments have a common point in that each solar cell element is positioned based on position information of an output extraction electrode or a collecting electrode provided in the solar cell element.

  In addition, in embodiment mentioned above, although manufacturing process of the solar cell string 3a was explained in full detail, you may apply also when manufacturing the solar cell matrix 3b. For example, as shown in FIG. 7, the position of the end of the collecting electrode 9 of the solar cell string 3a may be detected and aligned at equal intervals L ′ in the X direction to form the solar cell matrix 3b. Thereby, the design property of a solar cell module can further be improved.

1: Translucent substrate 2, 2 ′: Filler 3: Solar cell element (first solar cell element)
3 ′: Solar cell element (second solar cell element)
3a: solar cell string 3b: solar cell matrix 4: back surface protective material 5: wiring conductor 6: wiring material 7: substrate 8: output extraction electrode 8a: first output extraction electrode 8b: second output extraction electrode 8 ′: conducting portion 9: Current collecting electrode (first current collecting electrode)
10: Second current collecting electrode 11: Solar cell module manufacturing device 12: Position information acquisition device 13: Positioning device 13a: Suction unit 13b: Conveying device 14: Connection device 14a: Pressing pin 14b: Nozzle 15: Base 16: Transport device 17: Wiring material supply device

Claims (5)

A first output extraction electrode and a first current collecting electrode electrically connected to the first output extraction electrode are provided on a first surface of the substrate, and a second surface corresponding to the back surface of the first surface is provided on the first surface of the substrate. Having first and second solar cell elements provided with second output extraction electrodes;
The first and second solar cell elements are formed by electrically connecting the first output extraction electrode of the first solar cell element and the second output extraction electrode of the second solar cell element with a wiring material. A solar cell module manufacturing method comprising:
First position information of the first output extraction electrode or the first current collecting electrode of the first solar cell element is acquired, and the first output of the first solar cell element is obtained based on the first position information. Aligning the extraction electrode and the wiring material, and electrically connecting the first output extraction electrode of the first solar cell element and the wiring material;
Second position information of the second output extraction electrode or the first current collecting electrode of the second solar cell element is acquired, and the second output of the second solar cell element is obtained based on the second position information. A step of aligning the extraction electrode and the wiring member, and electrically connecting the second output extraction electrode of the second solar cell element and the wiring member. . A collector electrode is provided on the first surface of the substrate, and an output extraction electrode electrically connected to the collector electrode is provided on a second surface corresponding to the back surface of the first surface. And a second solar cell element,
The first and second solar cell elements are arranged by electrically connecting the output extraction electrode of the first solar cell element and the output extraction electrode of the second solar cell element with a wiring material. A solar cell module manufacturing method comprising:
Obtaining first position information of the output extraction electrode or the collector electrode of the first solar cell element, and based on the first position information, the output extraction electrode and the wiring member of the first solar cell element And electrically connecting the output extraction electrode of the first solar cell element and the wiring member;
Obtaining the second position information of the output extraction electrode or the collector electrode of the second solar cell element, and based on the second position information, the output extraction electrode and the wiring member of the second solar cell element And a step of electrically connecting the output extraction electrode of the second solar cell element and the wiring member, to produce a solar cell module. A first output extraction electrode and a first current collecting electrode electrically connected to the first output extraction electrode are provided on a first surface of the substrate, and a second surface corresponding to the back surface of the first surface is provided on the first surface of the substrate. Having first and second solar cell elements provided with second output extraction electrodes;
The first and second solar cell elements are formed by electrically connecting the first output extraction electrode of the first solar cell element and the second output extraction electrode of the second solar cell element with a wiring material. A solar cell module manufacturing apparatus comprising:
First position information serving as position information of the first output extraction electrode or the first current collecting electrode of the first solar cell element and the second output extraction electrode or the first current collection of the second solar cell element. A position information acquisition device for acquiring second position information that is position information of the electrode;
Based on the first position information and the second position information, the first output extraction electrode of the first solar cell element, the second output extraction electrode of the second solar cell element, and the wiring member An alignment device for alignment;
A solar cell module comprising: the first output extraction electrode of the first solar cell element; the second output extraction electrode of the second solar cell element; and a connection device that electrically connects the wiring member. Manufacturing equipment. A collector electrode is provided on the first surface of the substrate, and an output extraction electrode electrically connected to the collector electrode is provided on a second surface corresponding to the back surface of the first surface. And a second solar cell element,
The first and second solar cell elements are arranged by electrically connecting the output extraction electrode of the first solar cell element and the output extraction electrode of the second solar cell element with a wiring material. A solar cell module manufacturing apparatus comprising:
The first position information, which is the position information of the output extraction electrode or the collector electrode of the first solar cell element, and the position information of the output extraction electrode or the collector electrode of the second solar cell element. 2 position information acquisition device for acquiring position information;
Based on the first position information and the second position information, the output extraction electrode of the first solar cell element, the output extraction electrode of the second solar cell element, and the wiring material are aligned. An alignment device;
An apparatus for manufacturing a solar cell module, comprising: the output extraction electrode of the first solar cell element; the output extraction electrode of the second solar cell element; and a joining device that electrically joins the wiring member.   The said alignment apparatus further has a conveying apparatus which conveys the said 1st and 2nd solar cell element to an arrangement direction, The manufacturing apparatus of the solar cell module of Claim 3 or Claim 4 characterized by the above-mentioned.

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