JP2006278696A - Process for manufacturing solar cell module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a process for manufacturing a solar cell module, in which the operation for reversing a solar cell element is not required, when a connection tab is fixed. <P>SOLUTION: In a process for manufacturing a solar cell module where a plurality of solar cell elements 2, interconnected electrically through a connection tab 3 are arranged between a translucent light-receiving surface member 1 and a rear surface member 7, when the connection tab 3 is bonded to the solar cell element 2, the connection tab 3 is simultaneously soldered to the light-receiving surface side and the rear surface side of the solar cell element 2, while standing the solar cell element 2 in the substantially vertical direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a solar cell module, and more particularly to a method for attaching a connection tab for electrically connecting solar cell elements to a solar cell element.

  Solar cell elements are often manufactured using a single crystal silicon substrate or a polycrystalline silicon substrate. For this reason, the solar cell element is vulnerable to physical impact, and when the solar cell is installed outdoors, it is necessary to protect it from rain. Moreover, since the electrical output generated by one solar cell element is small, it is necessary to connect a plurality of solar cell elements in series and parallel so that a practical electrical output can be taken out. For this reason, a solar cell module is usually formed by connecting a plurality of solar cell elements and enclosing them with a light-transmitting light-receiving surface member and a filler mainly composed of ethylene vinyl acetate copolymer (EVA). ing.

  FIG. 1 is a diagram showing an example of the appearance on the light receiving surface side of a solar cell module.

  In FIG. 1, 1 is a translucent light receiving surface member, 2 is a solar cell element, 3 is a connection tab, 4 is a module frame, 5 is a solar cell string (a group of solar cell elements connected to each other), and 6 is a lateral wiring. Indicates.

  As shown in FIG. 2, the solar cell module encloses a plurality of solar cell elements 2 electrically connected from the connection tab 3 between the translucent light-receiving surface member 1 and the back surface member 7 with fillers 8 and 9. A solar cell panel was prepared, and the module frame 4 was attached to the outer periphery.

In such a solar cell module, the connection tab 3 is connected to the electrode of the solar cell element 2 in order to electrically connect the solar cell elements 2 in series or in parallel. (See the prior art in Patent Document 1)
Such a connection tab 3 is usually used by cutting a copper foil having a thickness of about 0.1 to 1.0 mm and a width of about 2 to 8 mm into a predetermined length by solder coating.

  FIG. 8 shows an example of a conventional device for connecting the connection tab 3 to the solar cell element 2. In FIG. 8, reference numeral 2 similarly denotes a solar cell element, 3 denotes a connection tab, 10 denotes an electrode part on the light receiving side of the solar cell element, 81 denotes a pressing pin, and 82 denotes a hot air blowing nozzle.

  To attach the connection tab 3 to the electrode part 10 of the solar cell element 2, the connection tab 3 is conveyed onto the electrode part 10 of the solar cell element 2 to be attached, and the connection tab 3 is brought into contact with the electrode part 10. Thereafter, the pressing pin 81 is lowered, and the connection tab 3 is pressed against the electrode portion 10. Thereafter, hot air of about 400 to 500 ° C. is blown from the nozzle 82 to the portion where the connection tab 3 is pressed against the electrode portion 10 with the pressing pin 81 for about a few seconds, and the solder of the connection tab 3 and the solder of the electrode portion 10 are applied. Melt and connect both. After that, when the solder is solidified, the pressing pin 81 is raised.

  Furthermore, in forming the solar cell string 5, the solar cell elements 2 to which the connection tabs 3 are connected as described above are linearly connected.

  The horizontal wiring 6 electrically connects the solar cell strings 5 to each other. Normally, the lateral wiring 6 is used by cutting a copper foil having a thickness of about 0.1 to 1.0 mm and a width of about 2 to 8 mm into a predetermined length by solder coating.

The following documents are related to such technology.
Japanese Patent Laid-Open No. 11-312820

  In the method of attaching the connection tab 3 to the solar cell element 2 as described above, the operation of attaching the connection tab 3 separately on the light receiving surface side and the back surface side of the solar cell element 2 and further inverting the solar cell element 2 is performed. There was a problem that it took time because it was necessary.

  Further, when the connection tab 3 is attached to the solar cell element 2 by such a method, the temperature and time when the connection tab 3 is attached are different between the electrode portion 10 on the front surface and the electrode portion on the back surface (not shown). Thus, the solar cell element 2 may be warped after the connection tab 3 is attached due to the difference in thermal expansion coefficient between the connection tab 3 and the solar cell element 2.

  Furthermore, when trying to automate by such a method, the connection tab 3 is attached separately to the electrode portion 10 on the light receiving surface side and the electrode portion on the back surface side of the solar cell element 2, so that different work tables are respectively provided. A large area is required such that it is necessary and also a part for inverting the solar cell element 2 is necessary.

  The present invention has been devised in view of the above-mentioned problems, and the object thereof is a solar cell module that can significantly reduce the time for attaching a connection tab and that does not warp the solar cell element. It is in providing the manufacturing method of.

The present invention includes a plurality of light-transmitting light-receiving surface members and back-surface members each having electrode portions on the light-receiving surface side and the back surface side, and electrically connected to the electrode portions via connection tabs. In the manufacturing method of the solar cell module in which the solar cell elements are arranged,
When soldering connection tabs to the electrode portions on the light receiving surface side and the back surface side of the solar cell element, the solar cell element is held in a substantially vertical direction, and the light receiving surface side and the back surface of the solar cell element are held. The connection tab is held in contact with the electrode portion on the side, and the connection tab is soldered while simultaneously heating the light receiving surface side and the back surface side of the solar cell element.

  Further, the solar cell element is moved upward after the connection tab is connected to the light receiving surface side and the back surface side of the solar cell element.

  When the connection tab is soldered to the electrode portion on the light receiving surface side and the electrode portion on the back surface side of the solar cell element as described above, the electrode portion and / or the connection tab is coated with solder in advance. The element is held in a substantially vertical direction, and the connection tabs are abutted and arranged on the electrode part on the light receiving surface side and the back surface side of the solar cell element, and the light receiving surface side and the back surface side of the solar cell element At the same time and solder the connection tabs. This eliminates the need to invert the solar cell element and simultaneously shortens the attachment time of the connection tab in order to perform connection tabs simultaneously on the electrode part on the light receiving surface side and the electrode part on the back surface side of the solar cell element. It becomes possible to do.

  In addition, when the connection tab is attached to the solar cell element by such a method, the temperature of the solar cell element at the time of attaching the connection tab is almost the same on the front surface and the back surface. The solar cell element after the connection tab is attached is not warped due to the difference in expansion coefficient.

  Furthermore, when trying to automate with such a method, it is necessary to prepare separate work benches for the front surface processing and the back surface processing in order to attach the connection tab with the solar cell element standing in a substantially vertical direction. In addition, a portion for reversing the solar cell element is unnecessary, and the area required for automation can be reduced.

  Further, after the connection tab is connected to the light receiving surface side and the back surface side of the solar cell element, the solar cell element moves upward, so that the above-described electrical connection by the connection tab between the solar cell elements is also described above. An effect can be produced.

  Hereinafter, the connection method of the solar cell module of this invention is demonstrated using drawing. FIG. 1 is a plan view of a general solar cell module, FIG. 2 is a partial cross-sectional view of the solar cell module, and FIG. 3 is a plan view of the light receiving surface side of the solar cell element.

  As the translucent light-receiving surface member 1, a substrate made of glass or polycarbonate resin is used. As the glass plate, white plate glass, tempered glass, double tempered glass, heat ray reflective glass and the like are used, but generally white plate tempered glass having a thickness of about 3 mm to 5 mm is used. On the other hand, when a substrate made of a synthetic resin such as polycarbonate resin is used, a substrate having a thickness of about 5 mm is often used.

  The light-receiving surface side sealing material 8 and the back surface side sealing material 9 are made of an ethylene-vinyl acetate copolymer (hereinafter, ethylene-vinyl acetate copolymer is abbreviated as EVA), and have a thickness of about 0.4 to 1 mm. A sheet-like form is used. These are fused and integrated with other members by applying heat and pressure under reduced pressure using a laminating apparatus. EVA may contain titanium oxide, a pigment, etc., and may be colored white. In the light-receiving surface side sealing material 32 according to the present invention, when colored, the amount of light incident on the solar cell element 2 tends to decrease and the power generation efficiency tends to decrease.

  Moreover, although EVA used for the back surface side sealing material 9 is preferably composed of a transparent material, in addition to this, titanium oxide, pigment, or the like is contained according to the installation environment around the solar cell module, thereby coloring it white or the like. May be.

  The solar cell element 2 has a square shape, a rectangular shape, a circular shape, a semicircular shape, or the like, and shows a bus bar electrode 10 and a finger electrode 12 on the light receiving surface side.

  The solar cell element 2 is made of, for example, single crystal silicon or polycrystalline silicon having a thickness of about 0.3 to 0.4 mm and a size of about 150 mm square. Inside the solar cell element 2, a PN junction (not shown) is formed in which a P layer containing a large amount of P-type impurities such as boron and an N layer containing a large amount of N-type impurities such as phosphorus are in contact. A bus bar electrode 10 and finger electrodes 12 are formed on the surface of the solar cell element 2.

  The bus bar electrode 10 and the finger electrode 12 are formed by applying silver paste or the like by a screen printing method or the like, and the surface of the bus bar electrode 10 is almost the entire surface in order to protect it and make the connection tab 3 easy to attach. Solder coated over. Part or all of the bus bar electrode 10 serves as an electrode portion on the light receiving surface side. The finger electrodes 12 have a width of about 0.1 to 0.2 mm and are formed in parallel with the sides of the solar cell element 2 to collect photogenerated carriers. Also, the bus bar electrodes 10 are formed to collect the collected carriers and have about 2 mm width for attaching the connection tabs 3, and about two bus bar electrodes 10 are formed so as to intersect the finger electrodes 12 perpendicularly. Such bus bar electrodes 10 and finger electrodes 12 are similarly formed on the back surface (non-light receiving surface) side of the solar cell element 2. Note that, on the back surface side, a region (for example, a bus bar electrode) connected to the connection tab 3 in particular is referred to as an electrode portion on the back surface side and is denoted by reference numeral 11.

  The connection tab 3 connected to the electrode portion 10 on the light receiving surface side and the electrode portion 11 on the back surface side of the solar cell element 2 is used by cutting the connection tab material 2 into an appropriate length. The thickness of the connection tab 3 is about 0.1 to 1.0 mm, and the width of the connection tab 3 is a bus bar so as not to make a shadow on the light receiving surface of the solar cell element 2 by the connection tab 3 itself after connection to the solar cell element 2. The width is equal to or less than the width of the electrode 10. Further, the length of the connection tab 3 overlaps almost all of the bus bar electrodes 10, and further overlaps the electrode portion 11 (not shown) on the non-light-receiving surface side of the adjacent solar cell element 2 and the interval between the predetermined solar cell elements 2. To. For example, when a polycrystalline silicon solar cell element having a side of 150 mm is used, the connection tab 3 has a width of about 1 to 3 mm and a length of about 200 to 300 mm. The reason why the connection tab 3 overlaps almost all of the light receiving surface side bus bar electrode 10 is to reduce the resistance component.

The connection tab 3 is made of a highly conductive metal such as silver, copper, aluminum, or iron, and is preferably made of copper in consideration of its conductivity and ease of solder coating. It is. Further, the connection tab 3 is entirely covered with solder (not shown) by eutectic solder or the like. This solder can cover the surface with a solder of about 20 to 70 microns by dipping the connection tab 3 such as a copper foil into a solder bath.
The plurality of solar cell elements 2 are electrically connected to each other by such connection tabs 3, and the connection tabs 3 extending to the outermost peripheral portion are connected by the lateral wiring 6 connected to a predetermined connection structure.

  The back member 7 is made of a weather-resistant fluorine-based resin sheet sandwiched with an aluminum foil so as not to transmit moisture, or a polyethylene terephthalate (PET) sheet deposited with alumina or silica.

  The method for assembling such a solar cell module is as follows.

  First, a translucent light-receiving surface member 1, an EVA sheet that becomes the light-receiving surface side sealing material 8, a solar cell element 2 that connects the connection tabs 3, an EVA sheet that becomes the back surface side sealing material 9, and a back surface member 7, On the light receiving surface member 1, an EVA sheet serving as the light receiving surface side sealing material 8, a solar cell element 2 connected to the connection tab 3, an EVA sheet serving as the back surface side sealing material 9, and the back surface member 7 are stacked according to the stacking order. Then, it is set in a device called a laminator, and is integrated by applying pressure while heating at a temperature of about 100 to 200 ° C. for about 15 to 60 minutes under a reduced pressure of about 50 to 150 Pa. Thereby, the solar cell panel which makes the principal part of a solar cell module can be formed. On the back side, a terminal box (not shown) having a cable for connecting an external circuit is attached with an adhesive or the like. Further, the module frame 4 necessary for obtaining the required strength as a solar cell module or for installing the solar cell module in a building or the like is fitted into the outer periphery of the solar cell panel portion, thereby completing the solar cell module.

  Next, the connection of the solar cell element 2 and the connection tab 3 which are the main processes of the manufacturing method of the solar cell module of this invention is demonstrated using FIG. 4, FIG. 4 and 5, the connection tab 3 is bonded to one solar cell element 2, and the connection tab connected to the electrode portion 10 on the light receiving surface side of the solar cell element 2 is denoted by reference numeral 3 a. A connection tab connected to the electrode portion 11 on the back surface side of the battery element 2 is denoted by reference numeral 3b.

  4 and 5, reference numerals 26, 26a, 26b, 26c, and 26d denote support rollers, 28 denotes a hot air blowing nozzle, and 29 denotes a pressing pin.

  As described above, the connection tabs 3a and 3b are made of a highly conductive metal such as silver, copper, aluminum, or iron, and the surface thereof is covered with solder of about 20 to 70 microns.

  The hot air blowing nozzle 28 is made of a stainless steel pipe having a diameter of about 3 to 8 mm, one end is disposed in the vicinity of the portion where the connection tabs 3a and 3b are connected to the electrode portions 10 and 11, and the other end is a hot air generator. It is connected. Further, a temperature sensor (not shown) such as a thermocouple is disposed in the vicinity of the hot air blowing portion of the hot air blowing nozzle 28 and is controlled so that the temperature of the hot air becomes a predetermined temperature.

  The pressing pin 29 is provided with a spring or the like therein, and presses the connection tabs 3a and 3b against the solar cell element 2 with a constant pressure, and the tip portion is rounded so that the solar cell element 2 is not broken. ing.

  The support rollers 26, 26a, 26b, 26c, and 26d have a cylindrical shape with a diameter of about 20 to 40 mm and a width of about 5 to 20 mm, and are made of stainless steel or the like, and the outer side thereof is coated with polypropylene, polyolefin, fluororesin, or the like. . A heat shrinkable tube or the like can be used for coating with this resin.

  In addition, the central portion of each support roller 26, 26a, 26b, 26c, 26d is connected to a motor via a drive system that combines gears and the like, and rotates at that position while synchronizing with each support roller. ing.

  Further, the support rollers 26a and 26c or 26b and 26d are paired and attached at the same height with a gap corresponding to the thickness of the solar cell element 2, and the pair of support rollers 26a and 26c or 26b and 26d are The solar cell element 2 is disposed with an interval so as to sandwich the upper portion and the lower portion thereof. The support rollers 26a and 26c and 26b and 26d rotate in the opposite directions at the same rotational speed so that the solar cell element 2 can be moved upward.

  In addition, an optical sensor or the like (not shown) is arranged so that the rotation is stopped when each of the support rollers 26, 26a, 26b, 26c, and 26d is rotated and the solar cell element is in a predetermined position. It is controlled.

  First, a plurality of solar cell elements 2 are housed in a cassette or the like in a vertically standing state, and two pieces of extruded lots made of Teflon (registered trademark) resin or the like are placed from the bottom of the cassette one by one while standing up from the cassette. It is lifted by about 30 mm by projecting ~ 3.

  Thereafter, the lifted solar cell element 2 is sandwiched from the light receiving surface side and the back surface side by the support rollers 26, 26a, 26b, 26c, and 26d, and the rollers 26, 26a, 26b, 26c, and 26d are rotated to be predetermined. Lift up vertically while standing vertically. The height to be lifted may be optimally determined by performing a test or the like in consideration of the size of the solar cell element 2 and the length of the connection tabs 3a and 3b, but about 30 to 80 mm for the 150 mm square solar cell element 2. Is appropriate.

  While being lifted up to a predetermined position as described above, the connection tab 3a, 3b is adsorbed to the connection tab transporter provided with the suction pad, and the bus bar electrode (electrode part) 10 on the light receiving surface side of the solar cell element 2 and the back surface side. The connection tabs 3a and 3b are conveyed to the bus bar electrode (electrode part) 11, and the electrode part 10 and the connection tab 3a are brought into contact with each other. The pressing pin 29 is moved while holding the connection tabs 3a and 3b by the connection tab transporter, and the connection tab 3a is connected from the electrode portion 10 on the light receiving surface side of the solar cell element 2, and the connection tab 3b is connected from the electrode portion 11 on the back surface side. Press down so that does not move. After the pressing pin 29 presses the connection tabs 3a and 3b, only the connection tab transporter is moved to another position.

  Thereafter, hot air of 400 to 500 ° C. is blown from the hot air blowing nozzle 28 for about 3 to 8 seconds to melt the solder that coats the connection tabs 3 a and 3 b, and the electrode portion 10 on the light receiving surface side of the solar cell element 2. And the connection tab 3a, and the electrode portion 11 on the back surface side and the connection tab 3b are soldered.

  After that, when the solder temperature at the soldering portion decreases and the solder is solidified, the pressing pin 29 is moved to another position, and the soldering of the connection tabs 3a and 3b to the solar cell element 2 is completed.

  In an actual solar cell module, a plurality of solar cell elements 2a, 2b,... Are connected in series using connection tabs 3a, 3b, and further connected in parallel as necessary to form a solar cell string. 5 is constituted. That is, FIG. 6 shows a state in which two solar cell elements 2a and 2b are connected in series by connection tabs 3a and 3b. The connection tab 3b connected to the electrode part 11 on the back surface side of the solar cell element 2a is a connection tab connected to the electrode part 10 on the light receiving surface side of the solar cell element 2b. In addition, the connection tab 3a connected to the electrode portion 10 on the light receiving surface side of the solar cell element 2a is connected to the solar cell element or the lateral wiring 6 that does not appear in the drawing (located on the upper side in FIG. 6). ing.

In FIG. 7, 2a and 2b indicate solar cell elements, and 3a, 3b and 3c indicate connection tabs.

  The connection tab 3b connected to the electrode part 11 on the back surface side of the solar cell element 2a is connected to the electrode part 10 on the light receiving surface side of the other solar cell element 2b by soldering. In this way, the connection tab 3a connected to the electrode portion 11 on the back surface side of the solar cell element 2b is used to connect to the electrode portion 10 on the light receiving surface side of the next solar cell element. And the solar cell string 5 can be produced by repeating for a predetermined number of solar cell elements.

  For example, a state in which the connection tabs 3a and 3b are attached to the two solar cell elements 2a and 2b and connected in series with each other is shown. That is, the solar cell elements 2a, 2b,... Are held in a substantially vertical direction as described above, and the connection tab 3a is connected to the electrode portion 10 on the light receiving surface side and the electrode portion 11 on the back surface side of the solar cell element 2a. 3b, the portion where the electrode portion 10 on the light receiving surface side of the solar cell element 2a and the connection tab 3a abut and the portion where the electrode portion 11 on the back surface side of the solar cell element 2b and the connection tab 3b abut simultaneously. After heating and soldering the connection tabs 3a and 3b, the support roller 26 holding the solar cell element 2a to which the connection tabs 3a and 3b are connected by soldering is rotated and moved further upward. The amount of movement is a length obtained by combining the dimensions of the gap between one solar cell element 2a and the solar cell elements 2a and 2b. For example, it is about 152 to 155 mm in a 150 mm square solar cell element.

  Further, the separate solar cell element 2b is moved as described above to the position where the connection tabs 3a and 3b are soldered, and the connection tabs are soldered to the light receiving surface side and the back surface side. The connection tab 3b to be soldered to the electrode portion 10 on the light receiving surface side of the newly supplied solar cell element 2b is connected to the back side of the solar cell element 2a which has already been soldered to the connection tab. The other end side of the tab 3a. By doing in this way, it will become easy to connect two solar cell elements in series, without impairing said effect which concerns on this invention.

  Thereafter, the two solar cell elements 2a, 2b are simultaneously moved upward by simultaneously rotating the support rollers 26 of the two solar cell elements 2a, 2b connected in series, and again as described above. It becomes possible to connect the element 2b and the next solar cell element (not shown) in series using the connection tab 3c.

  Thus, by repeatedly connecting a predetermined number by the above-described method, the solar cell string 5 can be easily created.

  In addition, when a predetermined number of solar cell elements 2 are connected to the solar cell string 5 thus manufactured, the upper end solar cell element 2 is grasped by a robot having a chucking mechanism and sent to the next process. It is done.

  When the connection tabs 3a and 3b are soldered to the electrode portions 10 and 11 on the light receiving surface side and the back surface side of the solar cell element 2, the solar cell element 2 is held in a substantially vertical direction. By arranging the connection tabs 3a, 3b on the electrode portions 10, 11 on the light receiving surface side and the back surface side of the element 2, heating the light receiving surface side and the back surface side of the solar cell element 2 at the same time, and soldering the connection tab, Since the connection tabs 3a and 3b are simultaneously applied to the electrode portions 10 and 11 on the light-receiving surface side and the back surface side of the solar cell element 2, an operation of inverting the solar cell element 2 is unnecessary, and the attachment time of the connection tabs 3a and 3b Can be greatly shortened.

  Furthermore, when the connection tabs 3a and 3b are attached to the solar cell element 2 by such a method, the temperature of the solar cell element 2 when the connection tabs 3a and 3b are attached becomes substantially the same on the light receiving surface side and the back surface side. The solar cell element 2 after the connection tabs 3a and 3b are attached is not warped due to the difference in thermal expansion coefficient between the connection tabs 3a and 3b and the solar cell element 2.

  In addition, when trying to automate by such a method, it is necessary to prepare separate work tables for the light receiving surface side and the back surface side in order to attach the connection tab with the solar cell element 2 standing in a substantially vertical direction. In addition, a portion for reversing the solar cell element 2 is not necessary, and the area required for automation can be reduced.

  The solder for joining the electrode part and the connection tab is formed in advance as a solder layer on the surface of the connection tab 3, but cream solder or the like may be applied in advance to the electrode part side, Solder may be formed on both the surface of the connection tab and the surface of the electrode portion.

  Furthermore, it can be applied not only to soldering at the points of the connection tab and bus bar electrode, but also to soldering in which the solder on the entire surface is fused.

  The bus bar electrode to which the connection tab is attached is not limited to the straight line as described above, but can be applied to an island shape.

It is the figure which showed an example of the external appearance by the side of the light-receiving surface of a typical solar cell module. It is sectional drawing which shows an example of the partial structure of the solar cell module which concerns on this invention. It is a top view which shows the external appearance by the side of the light-receiving surface of the solar cell element which concerns on this invention. It is the schematic which shows the method of connection tab attachment based on this invention. It is sectional drawing which shows the method of attaching a connection tab which concerns on this invention. It is a top view which shows the state which connected the two solar cell elements in series using the method of attaching a connection tab which concerns on this invention. It is sectional drawing which shows the method of connecting two solar cell elements mutually in series using the tab attachment method which concerns on this invention. An example of the conventional apparatus which connects a connection tab to a solar cell element is shown.

Explanation of symbols

1: Translucent light-receiving surface member 2, 2a, 2b: Solar cell element 3, 3a, 3b: Connection tab 4: Module frame 5: Solar cell string 6: Horizontal wiring 10: Electrode on the light-receiving surface side of the solar cell element Part 11: Electrode part on back side of solar cell element 29: Pressing pin 28: Hot air blowing nozzles 26, 26a, 26b, 26c, 26d: Support rollers

Claims (2)

A plurality of solar cell elements having electrode portions on the light receiving surface side and the back surface side between the translucent light receiving surface member and the back surface member, and electrically connected to each other via a connection tab. In the manufacturing method of the solar cell module in which
When soldering connection tabs to the electrode portions on the light receiving surface side and the back surface side of the solar cell element, the solar cell element is held in a substantially vertical direction, and the light receiving surface side and the back surface of the solar cell element are held. A method of manufacturing a solar cell module, wherein the connection tab is abutted and held on a side electrode portion, and the connection tab is soldered while simultaneously heating the light receiving surface side and the back surface side of the solar cell element. The solar cell module manufacturing method according to claim 1, wherein after the connection tab is connected to the light receiving surface side and the back surface side of the solar cell element, the solar cell element moves upward.

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