JP6555964B2 - Solar cell panel, solar cell module, method for manufacturing solar cell panel, and method for manufacturing solar cell module - Google Patents

Description

  The present invention relates to a solar cell panel, a solar cell module, a method for manufacturing a solar cell panel, and a method for manufacturing a solar cell module provided with an output lead wire for electrical connection to a terminal box.

  In a general solar cell module, in order to electrically connect the solar cell array and the terminal box, output lead wires led out from the inside of the solar cell array to the back surface side are provided. And as shown by patent document 1, the output lead wire pulled out from the solar cell array is fixed to the terminal board in a terminal box by soldering.

  Further, in order to protect the solar cell array and to ensure weather resistance, the solar cell module is resin-sealed in a sealing member made of resin between the glass substrate and the back sheet. Structure. Such a sealing structure is called a solar cell panel, and a laminated body in which a light receiving surface side protection member, a light receiving surface side sealing member, a solar cell array, a back surface side sealing member, and a back sheet are stacked is a laminator. It is formed by laminating and narrow-pressure welding.

  Here, in the solar cell array after lamination, the output lead wire is attached to the back sheet disposed on the back surface side of the solar cell module. For this reason, in order to connect an output lead wire to the terminal board in a terminal box, it is necessary to raise | generate an output lead wire.

JP 2013-38293 A

  However, in the solar cell array after lamination, a part of the output lead wire may be buried in the back sheet disposed on the back side of the solar cell panel. When a part of the output lead wire is buried in the back sheet, in the work of raising the output lead wire, the output lead wire cannot be raised smoothly, and the work load and time for raising the output lead wire increase. In some cases, however, the efficiency of the terminal box connection work is reduced.

  The present invention has been made in view of the above, and is a solar that can be easily connected to a terminal box, in which a reduction in the efficiency of the connection work of the terminal box due to burying of output leads in the back sheet is prevented. The object is to obtain a battery panel.

In order to solve the above-described problems and achieve the object, the present invention provides a solar cell array in which a solar cell array is sealed in a sealing member disposed between a light-receiving surface side protection member and a back sheet. It is a solar cell panel provided with the output lead wire pulled out to the back surface side of the back sheet from the sealing member through the opening provided in the back sheet. The output lead wire has a protruding portion that protrudes in the thickness direction of the output lead wire in the tip region on one end side that is drawn out to the back surface side of the back sheet. The protruding portion is a convex portion on the surface of the output lead wire facing the back surface side of the back sheet .

  According to the present invention, it is possible to obtain a solar cell panel that can be easily connected to a terminal box, in which a decrease in the efficiency of the connection work of the terminal box caused by burying the output lead wire in the back sheet is prevented. Play.

The perspective view which looked at the solar cell module concerning Embodiment 1 of this invention from the light-receiving surface side. The perspective view which looked at the solar cell module concerning Embodiment 1 of this invention from the back surface side on the opposite side to a light-receiving surface. The perspective view which shows the terminal box concerning Embodiment 1 of this invention. Sectional drawing which shows the principal part which shows the solar cell panel concerning Embodiment 1 of this invention. 1 is an exploded perspective view showing a laminated structure of a solar cell panel according to a first embodiment of the present invention. The top view which shows the output lead wire concerning Embodiment 1 of this invention It is a figure which shows the shape of the front-end | tip area | region of the side led out to the back surface side of the solar cell panel in the output lead wire of the solar cell panel concerning Embodiment 1 of this invention, (a) is a top view, (b) Is a side view, (c) is a cross-sectional view The top view which shows an example of the internal structure of the terminal box to which the output lead wire of the solar cell panel concerning Embodiment 1 of this invention is connected. The flowchart which shows the procedure of the manufacturing method of the solar cell module concerning Embodiment 1 of this invention. The top view which shows the solar cell array concerning Embodiment 1 of this invention. Schematic top view for explaining a method of manufacturing an output lead according to the first embodiment of the present invention Schematic cross-sectional view for explaining a method of manufacturing an output lead according to the first embodiment of the present invention Schematic cross-sectional view for explaining a method of manufacturing an output lead according to the first embodiment of the present invention Schematic cross-sectional view for explaining a method of manufacturing an output lead according to the first embodiment of the present invention Sectional drawing which shows the principal part which shows the laminated body by which the structural member of the solar cell panel concerning Embodiment 1 of this invention was laminated | stacked. Schematic cross-sectional view for explaining a method of laminating a laminate with a laminating apparatus in Embodiment 1 of the present invention Sectional drawing of the principal part of the solar cell panel formed by the lamination process of the laminated body in Embodiment 1 of this invention The schematic top view which shows the raising operation | work of an output lead wire in Embodiment 1 of this invention Sectional drawing which shows the principal part which shows the state by which the output lead wire in the solar cell panel after completion of laminating processing was raised and molded in the first embodiment of the present invention Sectional drawing which shows the state by which the output lead wire of the solar cell panel concerning Embodiment 1 of this invention was connected to the terminal board of a terminal box. It is a figure which shows the shape of the front-end | tip area | region in the 1st output lead wire concerning Embodiment 2 of this invention, (a) is a top view, (b) is a side view, (c) is sectional drawing. It is a figure which shows the shape of the front-end | tip area | region in the 2nd output lead wire concerning Embodiment 2 of this invention, (a) is a top view, (b) is a side view, (c) is sectional drawing. It is a figure which shows the shape of the front-end | tip area | region in the 3rd output lead wire concerning Embodiment 2 of this invention, (a) is a top view, (b) is a side view. It is a figure which shows the shape of the front-end | tip area | region in the 4th output lead wire concerning Embodiment 2 of this invention, (a) is a top view, (b) is a side view.

  Below, the solar cell panel, solar cell module, manufacturing method of a solar cell panel, and manufacturing method of a solar cell module concerning an embodiment of the invention are explained in detail based on a drawing. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably. In the drawings shown below, the scale of each member may be different from the actual scale for easy understanding.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a solar cell module 11 according to a first embodiment of the present invention as viewed from the light receiving surface side. FIG. 2 is a perspective view of the solar cell module 11 according to the first embodiment of the present invention as viewed from the back surface side opposite to the light receiving surface. FIG. 3 is a perspective view showing the terminal box 20 according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the main part showing the solar cell panel 10 according to the first exemplary embodiment of the present invention. In FIG. 4, the peripheral area | region of the output lead wire 5a in the solar cell panel 10 concerning this Embodiment 1 is shown. 4 shows a cross section along the output lead 5a, but the connection lead 4a is also shown for reference. FIG. 5 is an exploded perspective view showing the laminated structure of the solar cell panel 10 according to the first embodiment of the present invention. FIG. 6 is a plan view showing the output lead wire 5 according to the first embodiment of the present invention.

  The solar cell module 11 includes a solar cell panel 10. The solar cell panel 10 is supported by a rectangular frame-shaped aluminum support frame 12. A terminal box 20 for taking out outputs of a plurality of solar cells 3 connected in series is attached to the back sheet 7 which is a back surface side protection member of the solar cell panel 10.

  The terminal box 20 has a main body portion 20a that is a substantially box-shaped housing that constitutes an outer shell. The main body 20a has a rectangular parallelepiped shape that opens one surface. Moreover, the cover part 20e is attached to the main-body part 20a. The lid portion 20e closes the open surface of the main body portion 20a. The main body portion 20a and the lid portion 20e are formed of a resin having flame retardancy and weather resistance, such as acrylonitrile, butadiene (Butadiene), and styrene (Styrene) copolymer synthetic resin (ABS resin).

  The solar cell panel 10 according to the first embodiment includes a glass substrate as a light-transmitting substrate which is the light-receiving surface side protection member 1 formed of a light-transmitting material, and a light-receiving surface side formed of a light-transmitting resin. It is the light-receiving surface side sealing resin sheet which is the sealing member 2a, the solar cell array 6 in which the plurality of solar cells 3 are electrically connected in series, and the back surface side sealing member 2b formed of a transparent resin. A back sheet side sealing resin sheet and a back sheet 7 which is a back surface side protection member as a weather resistant substrate are laminated in this order from the light receiving surface side. In this solar cell panel 10, light L enters from the light-receiving surface side protection member 1 side.

  The solar cell array 6 includes a plurality of solar cells 3 arranged in a grid pattern on the same plane at a predetermined interval, and connection lead wires 4a that electrically connect the plurality of solar cells 3 in series. A solar cell string in which ten solar cells 3 arranged in a row along the longitudinal direction of the solar cell panel 10 are connected in series, and electrically connected in series with a solar cell string in an adjacent row, or The connection lead wire 4 b to which the connection lead wire 4 a and the output lead wire 5 are connected at the end of the solar cell array 6, and the output lead wire 5 that finally extracts power from the solar cell array 6 are provided. For the sake of illustration, the output lead wire 5 is omitted in FIG.

  The solar cell string 6b in which 10 solar cells 3 are connected in series and the solar cell string 6c in which 10 solar cells 3 are connected in series are the solar cell string 6b and one end of the solar cell string 6c. On the side, they are electrically connected in series by a connecting lead wire 4bb. The solar cell string 6d in which ten solar cells 3 are connected in series and the solar cell string 6e in which ten solar cells 3 are connected in series are one end of the solar cell string 6d and the solar cell string 6e. On the side, they are electrically connected in series by a connection lead 4bc. The solar cell string 6c and the solar cell string 6d are electrically connected in series by the connection lead wire 4be on the other end side of the solar cell string 6c and the solar cell string 6d.

  As shown in FIG. 6, the output lead wire 5a is connected to the connection lead wire 4ba connected to the connection lead wire 4a drawn from the solar cell 3 at one end of the solar cell string 6a as the output lead wire 5. Yes. An output lead wire 5b is connected to the connection lead wire 4bb. An output lead wire 5c is connected to the connection lead wire 4bc. Further, as the output lead wire 5, the output lead wire 5d is connected to the connection lead wire 4bd connected to the connection lead wire 4a drawn from the solar cell 3 at the other end of the solar cell string 6e. An output lead wire 5e is connected to the connection lead wire 4be. Note that an insulating sheet is inserted to prevent the output lead wire 5c and the connection lead wire 4bb from being in electrical contact with each other, so that the output lead wire 5c and the connection lead wire 4bb are insulated. In addition, here, a case where three output lead wires 5 are provided at one end and the other end of the solar cell array 6 is shown, but the number of output lead wires 5 is not limited to this, and the type of solar cell module The appropriate number is provided by.

  As the material for the light-receiving surface side sealing member 2a and the back surface side sealing member 2b, a resin having translucency and adhesiveness such as ethylene vinyl acetate (EVA), silicone, and urethane is used. . In addition, the material of the light-receiving surface side sealing member 2a and the back surface side sealing member 2b is not limited to these, It has translucency, and between the light-receiving surface side protection member and the solar cell array 6, and the back sheet | seat 7 Other thermosetting resins may be used as long as the solar cell array 6 can be sealed by bonding between the solar cell array 6 and the solar cell array 6.

  The back surface side sealing member 2b is provided with an output lead wire extraction hole 2bk which is an opening for drawing the output lead wire 5 to the back surface side of the solar cell panel 10. The back sheet 7 is provided with an output lead wire extraction hole 7k which is an opening for drawing the output lead wire 5 to the back surface side of the solar cell panel 10. In addition, if the output lead wire 5 can be pulled out to the back surface side of the solar cell panel 10, a slit that penetrates the back sheet 7 in the thickness direction as an opening instead of the output lead wire extraction hole 2 bk is formed in the back surface side sealing member 2 b. It may be provided.

  As the back sheet 7, a resin back sheet is used, and a hydrolysis resistant polyethylene terephthalate (PET) resin sheet, an olefin resin, and a polyvinyl fluoride (PVF) resin generally used in a solar cell module. A sheet or a laminated resin sheet obtained by bonding these sheets can be used. Moreover, what stuck the oxide vapor deposition film, such as a silica or an alumina, to the surface of a resin sheet can also be used.

  Each layer which comprises the solar cell panel 10 mentioned above is bonded together by heat processing, and is integrated. In FIG. 5, since it is an exploded perspective view, the light receiving surface side sealing member 2a and the back surface side sealing member 2b are shown separately, but the light receiving surface side sealing member 2a and the back surface side sealing member 2b are illustrated. Is a sealing member 2 that is connected and integrated in a region between adjacent solar cells 3 and a region outside the solar cell array 6 by heat treatment, and the solar cell array 6 is resin-sealed to form a light receiving surface. A resin sealing layer is formed between the side protection member 1 and the back sheet 7.

  FIG. 7: is a figure which shows the shape of the front-end | tip area | region of the side pulled out to the back surface side of the solar cell panel 10 in the output lead wire 5 of the solar cell panel 10 concerning Embodiment 1 of this invention, (a). Is a plan view, (b) is a side view, and (c) is a cross-sectional view. The output lead wire 5 is a strip-shaped conductive member made of a metal material having high conductivity such as copper (Cu), aluminum (Al), silver (Ag), and gold (Au) and having a cross-sectional shape processed into a flat rectangular shape. The surface is covered with solder.

  As shown in FIG. 7A, FIG. 7B, and FIG. 7C, the output lead wire 5 is connected to the back surface of the solar cell panel 10 through the output lead wire extraction hole 2bk and the output lead wire extraction hole 7k. A protruding portion 5p, which is a protruding portion protruding in the thickness direction of the output lead wire 5, is formed in the tip region on one end side that is drawn to the side. The protrusion 5 p is formed in a curved shape in an elliptical region in the plane of the output lead 5 with the major axis direction of the ellipse being parallel to the longitudinal direction of the output lead 5. Note that the protrusion 5 p may be provided in a curved shape in a circular region in the plane of the output lead wire 5. Here, the curved surface is a continuously curved surface that is not a flat surface.

  The output lead wire 5 has different dimensions depending on the type of the solar cell module. As an example of the dimensions used for the crystalline solar cell module, the width is 3 mm or more and less than 15 mm, and the thickness is 0.1 mm or more and less than 1 mm. Can be mentioned. The protrusion 5p preferably satisfies the condition represented by the following formula (1) in relation to the thickness T1 of the output lead wire and the curved surface height T2. The curved surface height T2 is a height at which the protruding portion 5p protrudes from the surface of the output lead wire 5.

  T2> T1 / 2 (1)

  When the relationship with the curved surface height T2 satisfies the condition represented by the expression (1), the leading end portion of the output lead wire 5 is attached to the back sheet 7 after the lamination process due to the provision of the protruding portion 5p as described later. It is possible to reliably obtain the effect of separating from the surface of the substrate, that is, floating. On the other hand, when the curved surface height T2 does not satisfy the condition expressed by the expression (1), the protruding height of the protruding portion 5p is small, and the output is performed after the lamination process due to providing the protruding portion 5p as described later. There is a possibility that the effect of separating the tip portion of the lead wire 5 from the surface of the back sheet 7, i.e., floating, may be insufficient.

  By providing such a protrusion 5p in the tip region of the output lead wire 5, the output lead wire 5 of the solar cell panel 10 formed by lamination is connected to a terminal box 20 as shown in FIG. The raising operation of the output lead wire 5 is facilitated. That is, in the solar cell panel 10 according to the first exemplary embodiment, the tip portion of the output lead wire 5 is provided with the protrusion 5p in the tip region of the output lead wire 5 so that the tip portion of the output lead wire 5 is separated from the surface of the back sheet 7 after lamination. Can be made to float. As a result, in the operation of raising the output lead wire 5 buried in the back sheet 7 using the raising member 71, the output lead wire 5 can be easily peeled off from the back sheet 7, and the output lead wire 5 can be easily raised in a short time. Can do. Therefore, a reduction in the efficiency of the connection work of the terminal box 20 due to the burying of the output lead wires 5 in the back sheet 7 is prevented, and the solar cell panel 10 in which the connection work of the terminal box 20 is easy is realized. The details of the work for raising the output lead 5 will be described later.

  Further, when the leading end portion of the output lead wire 5 buried in the back sheet 7 is raised after laminating, a recess 7 h corresponding to the leading end portion of the output lead wire 5 is formed on the surface of the back sheet 7. . That is, when the leading end portion of the output lead wire 5 is raised, it is in a region adjacent to the opening from which the output lead wire 5 is drawn on the surface of the back sheet 7 and on the side where the protruding portion 5p is formed. Is formed with a recess 7 h corresponding to the shape of the output lead wire 5 drawn to the back surface side of the solar cell panel 10.

  FIG. 8 is a plan view showing an example of the internal structure of the terminal box 20 to which the output lead wire 5 of the solar cell panel 10 according to the first embodiment of the present invention is connected. The terminal box 20 is attached at two locations so as to cover the output lead wire extraction holes 7k formed at diagonal positions on the back sheet 7 of the solar cell panel 10.

  And the circuit part 21 which makes the output part of the electric power output from the solar cell panel 10 is accommodated in the inside of the main-body part 20a. A module connection cable 22, which is an external cable extending to the outside, is connected to the circuit unit 21 for the purpose of taking out the output of the solar cell panel 10 and for the purpose of connecting to the other solar cell panel 10.

  The circuit portion 21 is disposed on the bottom surface 20b of the main body portion 20a, and includes three terminal plates 23a, 23b, and 23c that are terminal plates 23 to which the output lead wires 5 are connected, and a bypass diode 31 for reverse load current bypass. And two bypass diodes 31a and 31b. Hereinafter, the bypass diode may be simply referred to as a diode. The terminal plates 23a, 23b, and 23c are provided inside the terminal box 20, and are configured by a metal having a high electrical conductivity or a metal having a high electrical conductivity plated.

  The terminal plates 23a, 23b, and 23c have holes 24a, 24b, and 24c as holes 24, and the output lead wires 5a, 5b, and 5c that are the output lead wires 5 drawn out from the solar cell panel 10 are bent. Used for. A rectangular output lead wire inlet 20c is opened along the side of the main body 20a on the bottom surface 20b of the main body 20a, for example, at the upper end in the figure of FIG. The output lead wire 5 extending from the inside of the solar cell panel 10 is drawn into the main body 20a through the output lead wire drawing port 20c. On the other hand, cable drawing holes 25a and 25b for drawing out the module connecting cable 22 are formed in the outer wall 20d on the lower end side in FIG.

  On the bottom surface 20b of the main body 20a, terminal mounting portions 26a, 26b, and 26c are provided as terminal mounting portions 26 so as to protrude from the bottom surface 20b to the inside of the main body 20a. The three terminal plates 23a, 23b, and 23c are made of a material having good thermal conductivity, and the terminal mounting portions 26a, 26b, and 26c are inserted into the mounting holes 30a, 30b, and 30c that are drilled in advance as the mounting holes 30, respectively. Has been fixed. The terminal plates 23a, 23b, and 23c are arranged in parallel to each other in the horizontal direction in the figure as shown in FIG. 8, and each has a long shape extending in the vertical direction in the figure as shown in FIG.

  Output lead wires 5a, 5b, and 5c inserted into the main body portion 20a through the output lead wire lead-in port 20c are soldered to the upper ends in FIG. 8 of the respective terminal plates 23a, 23b, and 23c. On the other hand, of the three terminal plates 23a, 23b, and 23c, the cable connecting portion in which the module connecting cable 22 can be crimped and joined to the lower ends of the two terminal plates 23a and 23c at the left and right ends in FIG. 27a and 27b are provided. The large-area portion 29 of the terminal plate 23b is provided with a flow hole 28 for circulating air or heat in the terminal box 20.

  The diodes 31a and 31b are arranged side by side in the extending direction of the elongated shape of the three terminal plates 23a, 23b, and 23c, that is, in the direction orthogonal to the vertical direction in FIG. 8, that is, in the horizontal direction in FIG. . The diodes 31a and 31b have a rectifying function based on a PN junction, and the two leg electrodes have an N pole and a P pole, respectively. Then, the two leg electrodes bridge the adjacent terminal plates 23 so as to bypass the reverse current flowing between them.

  In the above description, the case where there are three terminal plates 23 and two diodes has been described. However, depending on the type of the solar cell module, these quantities are not limited to this. FIG. 8 shows the terminal box 20 to which the three output lead wires 5a, 5b, and 5c are connected out of the two terminal boxes 20, but the terminal box to which the output lead wires 5d and 5e are connected. 20 includes two terminal plates 23 and one diode.

  Below, the manufacturing method of the solar cell module 11 comprised as mentioned above is demonstrated. FIG. 9 is a flowchart showing the procedure of the method for manufacturing the solar cell module 11 according to the first embodiment of the present invention.

  First, in step S10, a plurality of solar cells 3 are manufactured by a known method. Then, one end side of the connection lead wire 4a is joined to an electrode provided on the light receiving surface of one solar cell 3, and the other end side is joined to an electrode provided on the back surface side of the other solar cell 3, The solar cell string is formed. And the solar cell array 6 as shown in FIG. 10 is produced by electrically connecting a plurality of solar cell strings in series using the connection leads 4b. FIG. 10 is a plan view showing the solar cell array 6 according to the first embodiment.

  Next, in step S20, as shown in FIG. 10, the output lead wires 5 are connected to the connection lead wires 4b connected to the solar cells 3 at both ends of the solar cell array 6, respectively. Here, the output lead wire 5 is connected so that the protruding portion 5p is positioned in the tip region on one end side drawn out from the output lead wire take-out hole 2bk and the output lead wire take-out hole 7k to the back surface side of the solar cell panel 10. Connected to the lead wire 4b. Further, the output lead wire 5 drawn out to the back surface side of the solar cell panel 10 has the surface of the protrusion 5p facing the surface of the back sheet 7 and in contact with the surface of the back sheet 7, and the surface direction is the surface of the back sheet 7. It is arrange | positioned in the state mounted in the state along.

  In general, an output lead wire is manufactured by cutting a coil-like long output lead wire base material made of a strip-like conductive material and wound around a bobbin into a certain size using a mold. The output lead wire 5 according to the first embodiment can be manufactured using a lower mold 41, an upper mold 42, and a punch 43 as shown in FIGS. The upper die 42 has a rectangular parallelepiped shape, and a cutting opening 42a penetrating from the upper surface to the lower surface is formed in a central region in the surface direction of the upper surface. On the lower surface of the upper mold 42 facing the lower mold 41, a protrusion-shaped recess 42 b having a curved shape corresponding to the surface shape of the protrusion 5 p is provided in the vicinity of the cutting opening 42 a.

  The lower mold 41 has a rectangular parallelepiped shape whose outer dimension in the surface direction of the upper surface is the same as that of the upper mold 42. In the lower die 41, a cutting opening 41a penetrating from the upper surface to the lower surface is formed in a central region in the surface direction of the upper surface. The opening 41a for cutting is formed in a dimension corresponding to the position of the opening 42a for cutting at a position corresponding to the position of the opening 42a for cutting when the upper mold 42 is overlaid on the lower mold 41. . On the lower surface of the lower mold 41 facing the upper mold 42, a position corresponding to the projection concave portion 42a of the upper mold 42 is used for a projection having a curved shape corresponding to the shape of the back surface of the projection 5p. A convex portion 41b is provided. The punch 43 has a quadrangular prism shape in which a cross section perpendicular to the longitudinal direction has the same outer shape as the cutting opening 42a and the cutting opening 41a. The cross-sectional dimension perpendicular to the longitudinal direction of the punch 43 is slightly smaller than the opening dimensions of the cutting opening 42a and the cutting opening 41a.

  FIG. 11 is a schematic top view illustrating a method for manufacturing the output lead wire 5. 12 to 14 are schematic cross-sectional views illustrating a method for manufacturing the output lead wire 5. In order to produce the output lead wire 5, first, as shown in FIGS. 11 and 12, a long output lead wire base material 44 plated with solder is provided between the lower die 41 and the upper die 42. The cut opening 42a and the cut opening 41a are overlaid over each other. A commercially available output lead wire base material 44 can be used. Next, as shown in FIG. 13, the upper die 42 is pressed against the upper surface of the lower die 41 to pressurize the output lead wire base material 44 between the upper die 42 and the lower die 41. As a result, the region sandwiched between the protrusion convex portion 41b of the lower mold 41 and the protrusion concave portion 42b of the upper mold 42 is pressed, and the shape of the protrusion 5p is formed. Further, the punch 43 is inserted from the cutting opening 42a in a state where the upper mold 42 is overlapped on the lower mold 41, and is inserted into the cutting opening 41a. Thereby, the area | region corresponding to the opening 41a for cutting in the output lead wire preform | base_material 44 is cut | disconnected, and it pushes in in the opening 41a for cutting.

  And as shown in FIG. 14, the output lead wire 5 in which the protrusion part 5p was formed is obtained by pulling up the punch 43 and the upper metal mold | die 42 from the lower metal mold | die 41. FIG. As described above, the protruding portion 5p of the output lead wire 5 simultaneously performs the cutting process and the press process for cutting the solder-plated long output lead wire base material 44 into a certain size using a mold. Formed.

  Here, it is preferable that the protrusion 5p satisfies the condition represented by the above equation (1) in relation to the thickness T1 of the output lead and the curved surface height T2. Therefore, the protrusion 41b for the protrusion of the lower mold 41 and the protrusion 42b for the protrusion of the upper mold 42 are formed with dimensions that allow the protrusion 5p to satisfy the condition expressed by the above formula (1). It is preferable.

  Thereafter, the output lead wire base material 44 on which the protrusions 5p are formed is floated and transported in the direction of arrow F shown in FIG. 14 and overlaid on the cutting opening 42a and the cutting opening 41a. And the output lead wire 5 can be mass-produced by performing said process.

  Since the output lead wire 5 is manufactured by the above-described method, the tip of the output lead wire 5 can be processed into a curved surface projecting from the surface of the output lead wire 5 at the same time as cutting. The output lead wire 5 can be manufactured without adding.

  Next, in step S30, the solar cell array 6 is installed on the light receiving surface side protection member 1 via the light receiving surface side sealing member 2a according to the arrangement of the constituent members of the solar cell panel 10 shown in FIG. Next, the back sheet 7 is arranged on the solar cell array 6 via the back surface side sealing member 2b, and the laminated body 51 in which the constituent members of the solar cell panel 10 are laminated as shown in FIG. 15 is produced. FIG. 15: is principal part sectional drawing which shows the laminated body 51 on which the structural member of the solar cell panel 10 concerning Embodiment 1 of this invention was laminated | stacked. FIG. 15 shows a cross section along the output lead 5a, but the connection lead 4a is also shown for reference. The same applies to the following FIG. 17, FIG. 19, and FIG.

  Next, in step S40, laminating is performed in which the laminate 51 is heated and pressed in a vacuum. By this laminating process, the constituent members of the laminated body 51 are laminated and integrated to form the solar cell panel 10.

  FIG. 16 is a schematic cross-sectional view for explaining a method of laminating the laminated body 51 by the laminating apparatus 60 in the first embodiment of the present invention. The laminating apparatus 60 is an apparatus that performs a laminating process on the object to be laminated, and can form the solar cell panel 10 by laminating the above-described laminated body 51.

  The laminating apparatus 60 includes an upper container 61 that constitutes the upper part of the laminating apparatus 60, a lower container 62 that constitutes the lower part of the laminating apparatus 60, and a transport belt 69 on which the object to be laminated is placed and transported. The upper container 61 is for the upper chamber for taking in and out air in the upper chamber 65 which is a space surrounded by the upper container 61 and the diaphragm 63, and a diaphragm 63 which is a pressurizing unit installed in the upper container 61. An intake / exhaust port 66 and a packing (not shown) are provided on the contact surface of the lower container 62 to keep the upper container 61 and the lower container 62 overlapped to keep a sealed state during lamination. The lower container 62 is placed in the lower container 62 to heat in and out the air in the lower chamber 67, which is a space surrounded by the heater plate 64 and the lower container 62 and the diaphragm 63. A lower chamber intake / exhaust port 68.

  When laminating the laminated body 51 by the laminating apparatus 60, the laminated body 51 is placed on the transport belt 69 in a state where the upper container 61 is spaced upward from the lower container 62 and the laminating apparatus 60 is opened. It is placed and carried in, and is placed on the heater plate 64 of the lower container 62. Next, the upper container 61 is lowered and overlapped with the lower container 62 through packing. Thereby, the space inside the laminating apparatus 60 is partitioned by the diaphragm 63, and the upper chamber 65 and the lower chamber 67 are configured inside the laminating apparatus 60.

  Next, the inside of the upper chamber 65 and the lower chamber 67 is decompressed by extracting the air in the upper chamber 65 and the lower chamber 67 through the upper chamber intake / exhaust port 66 and the lower chamber intake / exhaust port 68. The laminated body 51 is heated by raising the temperature of the heater plate 64.

  Next, when the heating temperature of the laminated body 51 reaches around the temperature at which the light-receiving surface side sealing member 2a and the back surface side sealing member 2b are melted, the upper chamber intake / exhaust port 66 is opened and the atmosphere inside the upper chamber 65 is opened. Is introduced. As a result, the pressure in the upper chamber 65 becomes larger than the pressure in the lower chamber 67, the diaphragm 63 expands due to the pressure difference between the upper chamber 65 and the lower chamber 67, and the laminate 51 is moved on the transport belt 69. A pressure is applied between the heater plate 64 and the diaphragm 63 in the stacking direction of the constituent members in the stacked body 51. The diaphragm 63 is made of an elastic material such as silicon rubber. When the laminate 51 is pressed, the surface shape of the contact surface with the laminate 51 is aligned with the surface state of the laminate 51. 51 is pressurized. Thereby, the laminated body 51 is press-molded. That is, the solar cell array 6 is hermetically sealed by the sealing member 2 in which the light-receiving surface side sealing member 2a and the back surface side sealing member 2b are melted and integrated while removing the air bubbles inside the laminated body 51, and laminating is performed. Complete.

  FIG. 17 is a cross-sectional view of a main part of solar cell panel 10 formed by laminating laminate 51 in Embodiment 1 of the present invention. In FIG. 17, the vicinity of the output lead wire 5 in the solar cell panel 10 after the end of the lamination process is shown. As shown in FIG. 17, the solar cell panel 10 after the end of the laminating process has at least a lower region on the side facing the back sheet 7 of a part of the output lead wire 5 drawn from the back sheet 7. It is in a state of being buried in the backsheet 7. The output lead wire 5 is in a state where the end surface 5t of the tip portion of the portion drawn from the back sheet 7 faces upward and the tip portion including a part of the protrusion 5p is separated from the surface of the back sheet 7, that is, floating. It is in the state. And a part of projection part 5p is the state spaced apart from the surface of the back sheet 7, ie, the floating state.

  The leading end portion of the output lead wire 5 is in a state of being separated from the surface of the back sheet 7 because the protruding portion 5 p is formed in the leading end region of the output lead wire 5. That is, when the laminate 51 is pressurized between the heater plate 64 and the diaphragm 63, the gap 52 between the output lead wire 5 and the back sheet 7 in the laminate 51 shown in FIG. 15 is eliminated. The peripheral part of the protrusion part 5p in the laminated body 51 is deformed. That is, the reason why the tip portion of the output lead wire 5 is separated from the surface of the back sheet 7 is that the tip region of the output lead wire 5 including a part of the protruding portion 5p is warped upward. ing.

  Next, in step S50, the raising operation of the output lead wire 5 is performed. That is, as shown in FIGS. 17 and 18, the raising member 71 is directed from the distal end side of the output lead wire 5 toward the distal end portion of the output lead wire 5, that is, in the direction of the arrow M shown in FIGS. 7 Slide on. As a result, the leading end portion of the raising member 71 presses the leading end portion of the output lead wire 5 that is separated from the surface of the back sheet 7, so that the output lead wire 5 embedded in the back sheet 7 is Peeled off and awakened. FIG. 18 is a schematic plan view showing the raising operation of the output lead wire 5 in the first embodiment of the present invention. As for the output lead wire 5, the protrusion part 5p is buried in the back sheet 7, and as shown in FIG. 18, the back surface 5pr of the protrusion part is exposed on the upper surface.

  Here, in the first embodiment, the tip portion of the output member 5 is separated from the surface of the back sheet 7, that is, is in a floating state, so that the tip portion of the raising member 71 is the output lead wire 5. Since it easily enters between the front end portion of the sheet and the surface of the back sheet 7 and enters under the output lead wire 5 buried in the back sheet 7, the output lead wire 5 is easily peeled off from the back sheet 7. Thereby, in this Embodiment 1, the output lead wire 5 can be raised easily in a short time. Therefore, the efficiency of the connection work of the terminal box 20 due to the buried of the output lead wire 5 in the back sheet 7 is prevented.

  Even when the leading end portion of the output lead wire 5 is not buried in the back sheet 7, the leading end portion of the output lead wire 5 is separated from the surface of the back sheet 7, that is, is in a floating state. Similarly, it becomes easy to peel the output lead wire 5 from the back sheet 7.

  The raising member 71 is formed in a flat plate shape from a resin material, and the tip portion is rounded. This prevents the raising member 71 from damaging the back sheet 7 when it slides on the back sheet 7, and also makes it easy to enter under the output lead wire 5 buried in the back sheet 7. The line 5 is easily peeled off from the back sheet 7. Further, by using the raising member 71 formed in a wide flat plate shape, a plurality of output lead wires 5 can be raised at the same time.

  The thickness of the raising member 71 may be set as appropriate corresponding to the distance at which the tip portion of the output lead wire 5 is separated from the surface of the back sheet 7. The lower the thickness of the raising member 71, the easier it is to enter under the output lead wire 5 from between the front end portion of the output lead wire 5 and the surface of the back sheet 7, and the output lead wire 5 is more easily peeled off from the back sheet 7. Become. Further, the raising member 71 may be thin only in the tip region.

  The raising member 71 may be moved away from the surface of the back sheet 7 as long as the output lead 5 can be peeled off from the back sheet 7 by moving in the direction of the arrow M.

  Then, as shown in FIG. 19, the output lead wire 5 raised using the raising member 71 is formed into a shape for connection to the terminal box 20. FIG. 19 is a main part cross-sectional view showing a state in which the output lead wire 5 is raised and molded in the solar cell panel 10 after the end of lamination in the first embodiment.

  Thereafter, in step S <b> 60, the output lead wire 5 of the solar cell panel 10 is electrically connected to the terminal box 20. That is, the terminal box 20 is lowered from the upper side to the lower side with respect to the solar cell panel 10 shown in FIG. 19, and covers the output lead wire extraction hole 7k of the back sheet 7 of the solar cell panel 10 as shown in FIG. The terminal box 20 is attached. Then, the output lead wire 5 drawn from the back sheet 7 is drawn into the terminal box 20 through the output lead wire lead-in port 20c, and the tip region is connected to the terminal plate 23 of the terminal box 20. FIG. 20 is a main part cross-sectional view showing a state in which the output lead wire 5 of the solar cell panel 10 according to the first embodiment is connected to the terminal plate 23 of the terminal box 20 to form the solar cell module 11. In FIG. 20, the output lead wire 5 is shown paying attention to the terminal plate 23, and detailed illustration of other members in the terminal box 20 is omitted.

  In order to connect the output lead wire 5 to the terminal plate 23, the output lead wire 5 passes through the output lead wire lead-in port 20c of the terminal box 20 in a state in which the lid portion 20e (not shown) of the main body portion 20a of the terminal box 20 is removed. Are pulled into the terminal box 20. Next, the leading end portion of the output lead wire 5 is inserted into the hole portion 24 of the terminal plate 23. Then, the output lead wire 5 is folded back toward the inside of the hole 24, and the electrical connection between the output lead wire 5 and the terminal plate 23 is performed by soldering. The soldering is performed by heating the output lead wire 5 using a soldering iron while supplying the solder, thereby melting the solder on the surface of the output lead wire 5 and soldering the output lead wire 5 to the terminal plate 23. Is done. If the output lead wire 5 can be securely soldered to the terminal plate 23, the output lead wire 5 may not be completely folded inside the hole 24.

  Note that, when the solar cell panel 10 is resin-sealed by laminating, a method of avoiding burying by placing paper or a resin tape between the tip of the output lead wire 5 and the back sheet 7 can be considered. Unlike the light receiving surface side sealing member 2a and the back surface side sealing member 2b, the shape of the paper or the resin tape is not easily deformed by heat treatment, so that the output lead wire 5 is difficult to be buried. However, extra work is required to spread the paper or resin tape and to remove the paper or resin tape after lamination. In addition, there is a problem that the paper or resin tape after use becomes unnecessary, which causes an increase in manufacturing cost.

  On the other hand, in the first embodiment, the protruding portion 5p is formed on the output lead wire 5 itself, so that no extra work occurs before and after lamination. Further, it is not necessary to remove the protruding portion 5p even after laminating, and the output lead 5 can be connected to the terminal plate 23 of the terminal box 20 with the protruding portion 5p formed, and unnecessary members are not generated. .

  As described above, in the first embodiment, the protrusion 5 p is formed in the tip region of the output lead wire 5. A tip portion including a part of the protruding portion 5p of the output lead wire 5 drawn from the back sheet 7 in the solar cell panel 10 formed by laminating by providing the protruding portion 5p in the tip region of the output lead wire 5. Is in a state of being separated from the surface of the backsheet 7, that is, in a floating state. Thereby, in the raising operation of the output lead wire 5 using the raising member 71, even when a part of the portion of the output lead wire 5 pulled out from the back sheet 7 is buried in the back sheet 7, the tip portion of the raising member 71 Enters between the front end portion of the output lead 5 and the surface of the back sheet 7, and easily enters under the output lead 5 buried in the back sheet 7. And in the raising operation | work of the output lead wire 5, the output lead wire 5 becomes easy to peel from the back seat | sheet 7. FIG. For this reason, the solar cell panel 10 according to the first exemplary embodiment can easily raise the output lead wire 5 buried in the back sheet 7 in a short time. Even when a part of the portion of the output lead wire 5 drawn out from the back sheet 7 is buried in the back sheet 7 in the entire thickness of the output lead wire 5, the output lead wire 5 drawn out from the back sheet 7. The tip portion including a part of the protruding portion 5p is separated from the surface of the back sheet 7, that is, is in a floating state.

  Therefore, in this Embodiment 1, the fall of the efficiency of the connection operation of the terminal box 20 resulting from the burying of the output lead wire 5 in the back sheet 7 is prevented, and the solar cell panel in which the connection operation of the terminal box 20 is easy. 10 and the solar cell module 11 can be realized.

Embodiment 2. FIG.
In the second embodiment, similarly to the output lead wire 5 according to the first embodiment provided with the protrusion 5p, the tip portion of the output lead wire drawn from the back sheet 7 in the solar cell panel formed by laminating. Will be described with respect to a modification of the output lead wire that is effective in separating from the surface of the back sheet 7, that is, floating. In addition, in the following figures, the same code | symbol is attached | subjected about the same requirement as the case of Embodiment 1, and description is abbreviate | omitted. The output lead wire according to the second embodiment described below is used instead of the output lead wire 5 in the laminate 51 to constitute a solar cell panel and a solar cell module.

  FIG. 21 is a diagram showing the shape of the tip region of the first output lead 81 according to the second embodiment of the present invention, where (a) is a plan view, (b) is a side view, and (c) is a cross section. FIG. The first output lead 81 has the same material as that of the output lead 5 except that the first output lead 81 has a protrusion 81p that is a protrusion protruding in the thickness direction of the first output lead 81 instead of the protrusion 5p. Formed with configuration.

  As shown in FIGS. 21 (a), 21 (b) and 21 (c), the first output lead wire 81 according to the second embodiment includes an output lead wire outlet hole 2bk and an output lead wire outlet hole 7k. A protruding portion 81p, which is a protruding portion protruding in the thickness direction of the first output lead 81, is formed in the tip region on one end side that is pulled out from the back side of the solar cell panel and connected to the terminal box 20. . The protrusion 81p is formed in a curved shape in an elliptical region in the plane of the first output lead 81 with the major axis direction of the ellipse parallel to the longitudinal direction of the first output lead 81. Yes. The two protrusions 81p are provided in parallel in the width direction of the first output lead 81 with the width dimension of the protrusion 81p described above being smaller than that of the protrusion 5p. When the stacked body 51 is configured as described above, the protruding portion 81p is formed on the surface where the first output lead wire 81 drawn to the back surface side of the solar cell panel 10 faces the surface of the back sheet 7. Yes. Note that the protrusion 81p may be provided in a circular region in the plane of the first output lead 81. Further, the projecting portion 81p may be provided with a plurality of three or more. The protrusion 81p can be formed by the same method as the protrusion 5p.

  In the protrusion 81p, it is preferable that the relationship between the output lead wire thickness T1 and the curved surface height T2 satisfies the condition represented by the following expression (2). The curved surface height T2 is a height at which the protruding portion 81p protrudes from the surface of the first output lead wire 81.

  T2> T1 ÷ 2 (2)

  When the height T2 of the curved surface satisfies the condition represented by the expression (2), the tip portion of the first output lead 81 after the laminating process is caused by providing the projection 81p as in the case of the output lead 5. The effect of separating from the surface of the back sheet 7, that is, floating is reliably obtained. On the other hand, when the curved surface height T2 does not satisfy the condition expressed by the expression (2), the protruding height of the protruding portion 81p is small, and the first output lead after the lamination process due to providing the protruding portion 81p. There is a possibility that the effect of separating the tip portion of the wire 81 from the surface of the back sheet 7, that is, floating the wire 81 is insufficient.

  22A and 22B are diagrams showing the shape of the tip region of the second output lead 82 according to the second embodiment of the present invention, where FIG. 22A is a plan view, FIG. 22B is a side view, and FIG. FIG. The second output lead 82 is formed of the same material and configuration as the output lead 5 except that it has a protrusion 82p instead of the protrusion 5p.

  As shown in FIG. 22A, FIG. 22B, and FIG. 22C, the second output lead wire 82 according to the second embodiment includes an output lead wire extraction hole 2bk and an output lead wire extraction hole 7k. A protrusion 82p, which is a protrusion protruding in the thickness direction of the second output lead 82, is formed in the tip region on one end side which is pulled out from the back surface side of the solar cell panel and connected to the terminal box 20. . The projecting portion 82p is formed in a semi-elliptical region in the plane of the second output lead wire 82 in a curved shape with the major axis direction of the ellipse being parallel to the longitudinal direction of the second output lead wire 82. ing. The protruding portion 82p has a shape and a size obtained by halving the protruding portion 5p described above. When the laminated body 51 is configured as described above, the protruding portion 82p is formed on the surface where the second output lead wire 82 drawn to the back surface side of the solar cell panel 10 faces the surface of the back sheet 7. Yes. The protrusion 82p may be provided in a semicircular region in the tip region on one end side of the second output lead 82. The protrusion 82p can be formed by the same method as the protrusion 5p.

  The protrusion 82p preferably satisfies the condition represented by the following expression (3) in relation to the thickness T1 of the output lead and the curved surface height T2. The curved surface height T2 is a height at which the protruding portion 82p protrudes from the surface of the second output lead wire 82.

  T2> T1 ÷ 2 (3)

  When the curved surface height T2 satisfies the condition represented by the expression (3), the tip portion of the second output lead wire 82 after the laminating process due to the provision of the protruding portion 82p is provided similarly to the output lead wire 5. The effect of separating from the surface of the back sheet 7, that is, floating is reliably obtained. On the other hand, when the curved surface height T2 does not satisfy the condition expressed by the expression (3), the protruding height of the protruding portion 82p is small, and the second output lead after the lamination process due to providing the protruding portion 82p. There is a possibility that the effect of separating the tip portion of the wire 82 from the surface of the back sheet 7, that is, the effect of floating is insufficient.

  FIG. 23 is a diagram showing the shape of the tip region of the third output lead 83 according to the second embodiment of the present invention, where (a) is a plan view and (b) is a side view. The cross-sectional shape of the third output lead 83 is the same as the side shape. The third output lead 83 is formed of the same material and configuration as the output lead 5 except that it has a bent portion 83p instead of the protruding portion 5p.

  As shown in FIGS. 23 (a) and 23 (b), the third output lead wire 83 according to the second embodiment is connected to the back surface of the solar cell panel from the output lead wire outlet hole 2bk and the output lead wire outlet hole 7k. A bent portion 83p, which is a protruding portion protruding in the thickness direction of the third output lead 83, is formed in the tip region on one end side that is pulled out to the side and connected to the terminal box 20. The bent portion 83p is subjected to a bending process of rounding toward the other end side of the third output lead wire 83 on the tip region on the one end side of the third output lead wire 83, so that the side surface shape is semicircular. It is formed in the curved surface shape.

  The bent portion 83p is formed on the surface on the side where the third output lead wire 83 drawn to the back surface side of the solar cell panel 10 does not face the surface of the back sheet 7 when the stacked body 51 is configured as described above. It is bent. In addition, the bent portion 83p is formed on the side where the third output lead wire 83 drawn out to the back surface side of the solar cell panel 10 faces the surface of the back sheet 7 when the stacked body 51 is configured as described above. It does not matter if it is bent on the surface.

  In the bent portion 83p, it is preferable that the relationship between the thickness T1 of the output lead wire and the distance T3 between the center of the bent curved surface and the output lead wire surface satisfies the condition represented by the following expression (4). The distance T3 between the center of the bent curved surface and the surface of the output lead wire is the center position of the bent curved surface of the bent portion 83p in the thickness direction of the third output lead 83 and the bent portion 83p in the side surface shape shown in FIG. Is the distance from the surface of the third output lead 83 on the unbent side.

  T3> 2 × T1 ÷ 3 (4)

  When the distance T3 between the center of the bent curved surface and the output lead wire surface satisfies the condition represented by the expression (4), the third portion after the lamination process due to the provision of the bent portion 83p is provided in the same manner as the output lead wire 5. The effect that the tip portion of the output lead 83 is separated from the surface of the back sheet 7, that is, floats can be obtained with certainty. On the other hand, when the distance T3 between the center of the bent curved surface and the output lead wire surface does not satisfy the condition expressed by the equation (4), the laminate 83 is low because the height of the bent portion 83p is small and the bent portion 83p is provided. There is a possibility that the effect of separating the tip portion of the third output lead 83 from the surface of the back sheet 7 after processing, that is, the effect of floating, is insufficient.

  24A and 24B are diagrams showing the shape of the tip region of the fourth output lead wire 84 according to the second embodiment of the present invention, where FIG. 24A is a plan view and FIG. 24B is a side view. The cross-sectional shape of the fourth output lead 84 is the same as the side shape. The fourth output lead wire 84 is formed of the same material and configuration as the output lead wire 5 except that it has a bent portion 84p instead of the protruding portion 5p.

  As shown in FIGS. 24 (a) and 24 (b), the fourth output lead wire 84 according to the second embodiment is connected to the back surface of the solar cell panel from the output lead wire outlet hole 2bk and the output lead wire outlet hole 7k. A bent portion 84 p, which is a protruding portion protruding in the thickness direction of the fourth output lead 84, is formed in the tip region on one end side that is pulled out to the side and connected to the terminal box 20. The bent portion 84p is formed on the surface on the side where the fourth output lead wire 84 drawn to the back surface side of the solar cell panel 10 does not face the surface of the back sheet 7 when the stacked body 51 is configured as described above. It is bent. As shown in FIG. 24 (b), the bent portion 84p is bent so that the tip region on the one end side of the fourth output lead wire 84 protrudes in a triangular shape in the side shape, so that the side shape is linear. It is formed in a shape bent into a shape. The bent portion 84p can also be formed by the same method as that for the protruding portion 5p.

  In the bent portion 84p, it is preferable that the relationship between the output lead wire thickness T1 and the bent height T4 satisfies the condition represented by the following expression (5). The bent height T4 is a height at which the bent portion 84p protrudes from the surface of the fourth output lead wire 84.

  T4> T1 ÷ 2 (5)

  When the relationship with the bending height T4 satisfies the condition expressed by the expression (5), the fourth output lead wire 84 after the laminating process due to the provision of the bent portion 84p is provided similarly to the output lead wire 5. An effect of separating the tip portion from the surface of the back sheet 7, that is, floating can be reliably obtained. On the other hand, when the bending height T4 does not satisfy the condition expressed by the expression (5), the height of the bent portion 84p is small, and the fourth output lead wire after the lamination process due to the provision of the bent portion 84p. There is a possibility that the tip end portion of 84 is separated from the surface of the back sheet 7, that is, the effect of floating is insufficient.

  As described above, the first output lead 81, the second output lead 82, the third output lead 83, and the fourth output lead 84 according to the second embodiment are also used. The same effects as those of the output lead wire 5 according to the first embodiment can be obtained.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  DESCRIPTION OF SYMBOLS 1 Light-receiving surface side protective member, 2 Sealing member, 2a Light-receiving surface side sealing member, 2b Back surface side sealing member, 2bk Output lead wire extraction hole, 3 Solar cell, 4a, 4b, 4ba, 4bb, 4bc, 4bd , 4be connecting lead wire, 5, 5a, 5b, 5c, 5d, 5e output lead wire, 5p protrusion, 5pr back surface, 5t end surface, 6 solar cell array, 6a, 6b, 6c, 6d, 6e, solar cell string, 7 Back sheet, 7h Recessed portion, 7k Output lead wire outlet hole, 10 Solar cell panel, 11 Solar cell module, 12 Support frame, 20 Terminal box, 20a Main body, 20b Bottom surface, 20c Output lead wire inlet, 20d Outer wall, 20e Lid, 21 Circuit, 22 Module connection cable, 23, 23a, 23b, 23c Terminal plate, 24, 2 a, 24b, 24c hole part, 25a, 25b cable lead-out hole, 26, 26a, 26b, 26c terminal attachment part, 27a, 27b cable connection part, 28 through hole, 29 large area part, 30, 30a, 30b, 30c attachment Hole, 31, 31a, 31b Bypass diode, 41 Lower mold, 41a Cutting opening, 41b Protrusion for protrusion, 42 Upper mold, 42a Cutting opening, 42b Recess for protrusion, 43 Punch, 44 Output Lead wire base material, 51 Laminated body, 52 Gap, 60 Laminating device, 61 Upper container, 62 Lower container, 63 Diaphragm, 64 Heater plate, 65 Upper chamber, 66 Upper chamber intake / exhaust port, 67 Lower chamber, 68 Lower chamber Intake / exhaust port, 69 conveying belt, 71 raising member, 81 first output lead wire, 81p protrusion Parts, 82 second output leads, 82p protrusion, 83 the third output leads, 83p bent portion, 84 a fourth output leads, 84p bent portion.

Claims (10)

A solar cell array is sealed in a sealing member disposed between the light-receiving surface side protection member and the back sheet, and an opening provided in the back sheet is electrically connected to the solar cell array. A solar cell panel provided with an output lead wire drawn out from the sealing member to the back side of the back sheet,
The output lead wire has a protruding portion that protrudes in the thickness direction of the output lead wire in a tip end region on one end side drawn to the back surface side of the back sheet,
The projecting portion is a convex portion of the surface of the output lead wire facing the back surface side of the backsheet ;
A solar panel characterized by. A solar cell array is sealed in a sealing member disposed between the light-receiving surface side protection member and the back sheet, and an opening provided in the back sheet is electrically connected to the solar cell array. An output lead wire drawn out from the sealing member to the back surface side of the back sheet, and the output lead wire is output to the tip region on one end side drawn to the back surface side of the back sheet. A solar cell panel having a protruding portion protruding in the thickness direction of the lead wire;
A terminal box provided on the back side of the solar cell panel and having a terminal plate to which the output lead wire is connected;
A solar cell module comprising:
The tip region of the output lead is connected to the terminal plate;
The projecting portion is a convex portion of the surface of the output lead wire facing the back surface side of the backsheet ;
A solar cell module characterized by. The protruding portion is a protruding portion in which a circular, elliptical, or semi-elliptical region in a part of a tip region of the output lead wire is formed in a curved shape,
The solar cell module according to claim 2. The protruding portion is a bent portion in which a tip region of the output lead wire is bent into a curved shape or a straight line;
The solar cell module according to claim 2. A light-receiving surface-side protective member having translucency, a light-receiving surface-side sealing resin sheet, a solar cell array to which an output lead wire is connected, a back surface-side sealing resin sheet, and a back sheet made of a resin material. A first step of sequentially laminating to form a laminate;
A second step of laminating the laminate by heating and pressurizing the laminate in the laminating direction;
A method for manufacturing a solar cell panel including:
The output lead wire has a protruding portion that protrudes in the thickness direction of the output lead wire in a tip region on one end side drawn to the back surface side of the solar cell panel,
In the first step, the output lead wire is pulled out to the back sheet side through an opening portion of the back side sealing resin sheet and an opening portion of the back sheet, and the surface direction of the output lead wire is the back sheet Placed in a state of being placed along the surface of the
In the second step, a tip portion of the output lead wire including a part of the protruding portion is separated from the surface of the back sheet;
The manufacturing method of the solar cell panel characterized by these. In the first step, the output lead wire is disposed in a state where the protruding portion faces the back sheet,
The manufacturing method of the solar cell panel of Claim 5 characterized by these. The protrusion is formed by processing a circular, elliptical, or semi-elliptical region in a part of the tip region into a curved shape,
The method for producing a solar cell panel according to claim 6. The protruding portion is formed by simultaneously performing a cutting process using a mold and a press process using the mold on the long output lead wire base material,
The manufacturing method of the solar cell panel of Claim 7 characterized by these. The protrusion is formed by bending the tip region into a curved shape or a straight line;
The method for producing a solar cell panel according to claim 6. A first step of forming a solar cell panel by the method for manufacturing a solar cell panel according to any one of claims 5 to 9,
A second step of disposing a terminal box having a terminal plate to which the output lead wire is connected on the back side of the solar cell panel and connecting the tip region of the output lead wire to the terminal plate;
In the second step, the output lead wire drawn out to the back surface side of the solar cell panel and buried in the back sheet is separated from the front end portion of the output lead wire and the surface of the back sheet. Including a step of peeling the output lead wire from the surface of the backsheet by inserting a raising member between and pressing the tip portion,
The manufacturing method of the solar cell module characterized by these.