JP2013098399A - Solar battery module, terminal structure, terminal structure coupling apparatus and manufacturing method of solar battery module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery module in which connection reliability is improved, a terminal structure, a terminal structure coupling apparatus and a manufacturing method of the solar battery module.SOLUTION: A solar battery module 1 comprises a translucent substrate 10, a solar battery cell 11 which is disposed at the side of a rear surface 10r of the translucent substrate 10, a rear surface protection member 14 which covers and protects the solar battery cell 11, an output lead wire 15 in which output of the solar battery cell 11 is guided and which is taken out of the rear surface protection member 14, and a terminal plate 21 which is disposed outside the rear surface protection member 14 and to which the output lead wire 15 is connected. The terminal plate 21 includes a passage portion 22 through which the output lead wire 15 is passed, a placement portion 24 on which the output lead wire 15 is placed between the passage portion 22 and an end portion 23, and a recessed portion 25 where the placement portion 24 is recessed toward the solar battery cell 11. The output lead wire 15 is pushed into the recessed portion 25.

Description

  The present invention is a solar cell module in which an output lead wire for taking out an output from a solar battery cell and a recess formed in a terminal plate are connected, a terminal structure in which an output lead wire from a connection object and a terminal plate are connected, The present invention relates to a terminal structure coupling device for coupling an output lead wire and a terminal plate of a terminal structure, and a method for manufacturing a solar cell module.

  The output of the solar battery cell (solar battery cell group, solar battery module) is taken out by pulling out the output lead wire from the solar battery cell and connecting the output lead wire to the terminal plate (terminal structure).

  Since the solar cell module is exposed to a harsh natural environment as it is, long-term reliability is required. In particular, since the connection between the output lead wire and the terminal structure is a basic component for taking out the output, various proposals have been made (for example, see Patent Document 1).

  Patent Document 1 proposes a technique for fixing an output lead wire with a clip. According to the technique of Patent Document 1, another member called a clip is required, and there is a problem that automation is difficult.

  In addition, a technique for bending the tip of the output lead wire and fixing it to a terminal block (for example, see Patent Document 2) has been proposed. Further, the output lead wire is often connected to a terminal board (terminal block) with solder. However, the connection by soldering has a problem that it is difficult to control the soldering conditions with high accuracy.

Japanese Patent Application Laid-Open No. 2011-9587 JP 2010-4068 A

  As described above, depending on the prior art, it is often difficult to ensure sufficient reliability of connection between the output lead wire and the terminal plate.

  The present invention has been made in view of such a situation, and the object is as follows.

  The present invention provides a solar cell module in which an output lead wire is disposed in a recess provided in a terminal plate, thereby ensuring a mechanical coupling between the output lead wire and the terminal plate and improving connection reliability. With the goal.

  Another object of the present invention is to provide a terminal structure that improves the reliability of connection by coupling an output lead wire to a terminal plate with high accuracy by a terminal plate having a recess.

  Further, the present invention includes a pushing jig for pushing the output lead wire into the concave portion of the terminal board and a pushing control mechanism for controlling the pushing jig, thereby automatically executing the output lead wire into the concave portion of the terminal board. Another object of the present invention is to provide a terminal structure coupling device that improves productivity.

  In addition, the present invention provides a solar cell module that manufactures a solar cell module with high connection reliability by pushing the output lead wire into the recess to improve the mechanical coupling strength between the output lead wire and the terminal plate. Another object is to provide a manufacturing method.

  The solar cell module according to the present invention covers and protects a translucent substrate on which sunlight is incident from the front surface side, a solar cell disposed on the back surface side of the translucent substrate, and the solar cell. A back surface protection member, an output lead wire from which the output of the solar cell is guided and taken out from the back surface protection member, and a terminal plate arranged outside the back surface protection member and connected to the output lead wire. In the solar cell module, the terminal plate includes a passage portion through which the output lead wire passes from the solar battery cell side to the outside, an end portion disposed away from the passage portion, the passage portion, and the passage A mounting portion on which the output lead wire is placed between the end portion and a concave portion in which the placement portion is recessed toward the solar battery cell, and the output lead wire is disposed in the concave portion. It is characterized by.

  Therefore, in the solar cell module according to the present invention, since the output lead wire is inserted into the concave portion in which the mounting portion is recessed, the output lead wire is placed in the concave portion. And the mechanical connection strength between the output lead wire and the terminal plate is improved, thereby improving the connection reliability.

  In the solar cell module according to the present invention, the output lead wire extends from the center of the depth of the concave portion toward the bottom.

  Therefore, the solar cell module according to the present invention makes it difficult for the output lead wire to come out of the recess, so that the output lead wire can be reliably connected to the terminal plate (recess).

  In the solar cell module according to the present invention, the output lead wire is sandwiched between the recesses.

  Therefore, the solar cell module according to the present invention is in a state where the concave portion sandwiches the output lead wire, so that the output lead wire is securely fixed by the concave portion, and the coupling strength between the output lead wire and the terminal plate (concave portion) is improved. Let

  In the solar cell module according to the present invention, the inner surface of the recess is an uneven surface.

  Therefore, in the solar cell module according to the present invention, since the inner surface of the recess is an uneven surface, the uneven surface forms a return to the output lead wire to prevent the output lead wire from moving. Improve the bond strength with the plate.

  In the solar cell module according to the present invention, the uneven surface has a sawtooth shape in cross section in the plate thickness direction.

  Therefore, in the solar cell module according to the present invention, since the inner surface of the recess is a serrated uneven surface, a highly accurate uneven surface is formed, so that the output lead wire and the terminal plate are combined with high accuracy. .

  In the solar cell module according to the present invention, the uneven surface has a corrugated cross section in the plate thickness direction.

  Therefore, in the solar cell module according to the present invention, since the inner surface of the recess is a corrugated uneven surface, a highly accurate and smooth uneven surface is formed, so the output lead wire and the terminal plate can be accurately connected. Combine.

  Moreover, in the solar cell module according to the present invention, the uneven surface has a shape along the other waveform.

  Therefore, since the solar cell module according to the present invention can sandwich the output lead wire over a long distance with the corrugated uneven surface, the coupling strength between the output lead wire and the terminal plate is improved. The connection resistance between the output lead wire and the terminal board is suppressed.

  In the solar cell module according to the present invention, the output lead wire has a strip shape.

  Therefore, the solar cell module according to the present invention facilitates connection of the output lead wire to the terminal plate, and can suppress connection resistance.

  In the solar cell module according to the present invention, the output lead wire is bonded to the terminal board by a conductive adhesive member at the entrance of the recess.

  Therefore, in the solar cell module according to the present invention, since the output lead wire is bonded (connected) by the adhesive member at the entrance of the recess, the connection between the output lead wire and the terminal plate is ensured and a highly reliable connection is achieved. Realize.

  The terminal structure according to the present invention includes a terminal plate to which an output lead wire taken out from a connection target is connected, and a support unit that is attached to the connection target and supports the terminal plate. The terminal plate includes a passage portion through which the output lead wire passes from the connection object side to the outside, an end portion disposed away from the passage portion, and the output lead wire through the passage. A mounting portion that is mounted from a portion to the end portion, and a concave portion in which the mounting portion is recessed toward the connection object, and the support portion supports a back surface of the mounting portion. It is characterized by being.

  Therefore, since the terminal structure according to the present invention supports the terminal plate (the back surface of the mounting portion) by the support portion attached to the connection object, the entrance of the recess is exposed to the outside. It becomes easy to push the lead wire into the recess, and the output lead wire is coupled to the terminal board with high accuracy to improve the connection reliability.

  The terminal structure coupling device according to the present invention includes a terminal plate to which an output lead wire taken out from a connection target is connected, and a support unit that is attached to the connection target and supports the terminal plate. A terminal structure coupling device that couples the output lead wire to a terminal structure, wherein the terminal plate has a passage portion that allows the output lead wire to pass from the connection object side to the outside, and is separated from the passage portion. Arranged, a placement part on which the output lead wire is placed from the passage part to the end part, and a recessed part in which the placement part is recessed toward the connection object. And a pushing jig for pushing the output lead wire placed on the placing section into the recess, and a pushing control mechanism for controlling the position of the pushing jig.

  Therefore, since the terminal structure coupling device according to the present invention controls the position of the pushing jig by the control mechanism unit, the pushing of the output lead wire into the concave portion can be automatically executed, so that the productivity is improved.

  Moreover, the manufacturing method of the solar cell module according to the present invention includes a translucent substrate on which sunlight is incident from the front surface side, a solar cell disposed on the back surface side of the translucent substrate, and the solar cell. A back surface protection member that covers and protects, an output lead wire from which the output of the solar cell is guided and taken out from the back surface protection member, and the output lead wire that is disposed outside the back surface protection member and connected A method for manufacturing a solar cell module comprising a terminal plate, the step of passing a passage part included in the terminal plate through the output lead wire, and a step of mounting the output lead wire on a mounting part included in the terminal plate. And a step of pushing the output lead wire placed on the placement portion into a recess in which the placement portion is recessed.

  Therefore, in the method for manufacturing a solar cell module according to the present invention, since the output lead wire can be easily and highly accurately inserted into the concave portion in which the mounting portion is recessed, the mechanical coupling strength between the output lead wire and the terminal plate is Is easily and highly accurately manufactured to manufacture a solar cell module with high connection reliability.

  The solar cell module according to the present invention includes an output lead wire and a terminal plate to which the output lead wire is connected. The terminal plate has a placement portion on which the output lead wire is placed, and the placement portion is a solar cell. A recess recessed toward the cell, and the output lead is disposed in the recess.

  Therefore, the solar cell module according to the present invention inserts the output lead wire into the concave portion formed by bending the mounting portion into the concave shape, so that the output lead wire is fitted into the concave portion. The wire is securely coupled to the terminal plate, and the mechanical coupling strength between the output lead wire and the terminal plate is improved, thereby improving the connection reliability.

  The terminal structure according to the present invention is a terminal structure including a terminal plate to which an output lead wire is connected and a support portion that supports the terminal plate. The terminal plate has an output lead wire extending from a passage portion. The mounting part mounted over an edge part and the recessed part with which the mounting part was dented toward the connection target object side are provided.

  Therefore, since the terminal structure according to the present invention supports the terminal plate (the back surface of the mounting portion) by the support portion attached to the connection object, the entrance of the concave portion is exposed to the outside. It becomes easy to push the output lead wire into the recess, and the output lead wire is coupled to the terminal plate with high accuracy, thereby improving the connection reliability.

  A terminal structure coupling device according to the present invention is a terminal structure coupling device that couples an output lead wire to a terminal structure including a terminal plate and a support portion, and the terminal plate is connected to the mounting portion. A depression is provided that is recessed toward the object, and includes a pushing jig that pushes the output lead wire placed on the placing section into the depression, and a pushing control mechanism that controls the position of the pushing jig.

  Accordingly, since the terminal structure coupling device according to the present invention controls the position of the pushing jig by the control mechanism unit, it can automatically push the output lead wire into the recess, thereby improving productivity. There is an effect.

  Moreover, the method for manufacturing a solar cell module according to the present invention is a method for manufacturing a solar cell module including a terminal plate to which an output lead wire taken out from a back surface protection member to which an output of a solar cell is guided is connected. A step of passing the passage portion of the terminal plate through the output lead wire, a step of placing the output lead wire on the placement portion of the terminal plate, and the placement portion of the output lead wire placed on the placement portion And a step of pushing into the recessed portion.

  Therefore, in the method for manufacturing a solar cell module according to the present invention, since the output lead wire can be easily and highly accurately inserted into the concave portion in which the mounting portion is recessed, the mechanical coupling strength between the output lead wire and the terminal plate is As a result, it is possible to easily and accurately improve the solar cell module with high connection reliability.

It is sectional drawing which shows the cross-sectional state in the extension direction of an output lead wire about the solar cell module and terminal structure which concern on Embodiment 1 of this invention. It is a perspective view which shows the state seen from diagonally upward of the terminal board which comprises a part of terminal structure which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which mounted the output lead wire in the mounting part of the terminal board which concerns on Embodiment 1 of this invention. It is a perspective sectional view showing a section state when an output lead wire placed in a placement part of a terminal board concerning Embodiment 1 of the present invention is pushed into a crevice with a pushing jig. It is a perspective view which shows the state which bonded the output lead wire and the entrance of the recessed part with the adhesive member, after inserting an output lead wire into the recessed part formed in the terminal board which concerns on Embodiment 1 of this invention. It is a modification of the terminal structure shown in Drawing 2D, and is a perspective view showing a state when an output lead wire is welded to a terminal board (mounting part) with a welding jig instead of an adhesive member. It is sectional drawing which shows the cross-sectional state in the press-contact process which clamps the output lead wire inserted in the recessed part of the terminal board which concerns on Embodiment 1 of this invention with a press-contact jig. It is sectional drawing which shows the cross-sectional state with which the recessed part clamped the output lead wire by the press-contacting process of FIG. 3A. It is sectional drawing which shows the cross-sectional state of the inner surface of the recessed part which the terminal structure (terminal board) which concerns on Embodiment 2 of this invention has. It is sectional drawing which shows a cross-sectional state when the inner surface of the recessed part shown to FIG. 4A is press-contacted. It is sectional drawing which shows the cross-sectional state of the inner surface of the recessed part which the terminal structure (terminal board) which concerns on Embodiment 2 of this invention has.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
With reference to FIG. 1 thru | or FIG. 3B, the solar cell module 1 which concerns on this Embodiment, the terminal structure 20 applied to the solar cell module 1, the terminal structure coupling device 40 which forms the terminal structure 20, and the solar A method for manufacturing the battery module 1 will be described.

  FIG. 1 is a cross-sectional view showing a cross-sectional state of the output lead wire 15 in the extending direction of the solar cell module 1 and the terminal structure 20 according to Embodiment 1 of the present invention.

  The solar cell module 1 according to the present embodiment includes a translucent substrate 10 on which sunlight is incident from the front surface 10s side, a solar cell 11 disposed on the back surface 10r side of the translucent substrate 10, and a solar cell. The back surface protection member 14 that covers and protects the cell 11, the output lead wire 15 from which the output of the solar cell 11 is guided and taken out from the back surface protection member 14, and the output lead wire 15 that is disposed outside the back surface protection member 14 Are connected to the terminal board 21.

  In the solar cell module 1, the terminal plate 21 includes a passage portion 22 through which the output lead wire 15 passes from the solar cell 11 side to the outside, an end portion 23 disposed away from the passage portion 22, and a passage portion 22. A mounting portion 24 on which the output lead wire 15 is placed between the end portion 23 and a concave portion 25 in which the mounting portion 24 is recessed toward the solar battery cell 11 is provided. The output lead wire 15 includes the concave portion 25. Is placed (inserted).

  Therefore, since the output lead wire 15 is inserted into the concave portion 25 in which the mounting portion 24 is recessed, the solar cell module 1 is in a state in which the output lead wire 15 is disposed (inserted) in the concave portion 25. The output lead wire 15 is securely coupled to the terminal plate 21, and the mechanical coupling strength between the output lead wire 15 and the terminal plate 21 is improved to improve the connection reliability.

  The concave portion 25 can be formed by, for example, bending the flat plate when the terminal plate 21 is formed by pressing the flat plate.

  In the present embodiment, the passage portion 22 is an opening 27 (see FIG. 2A for a specific shape), but in addition, for example, a notch shape (one of the frames constituting the opening 27 is removed and opened). Shape). In other words, the passing portion 22 is not limited to the opening portion 27, but may be any shape as long as the output lead wire 15 passes from the solar battery cell 11 side to the outside.

  The output lead wire 15 has a strip shape. Therefore, the solar cell module 1 can easily connect the output lead wire 15 to the terminal plate 21 and can suppress the connection resistance. That is, the output lead wire 15 is preferably made of copper and is a strip-shaped thin plate (copper plate, copper foil). For example, the plate thickness is appropriately set to 50 μm to 200 μm according to the specifications of the solar battery cell 11 (solar battery module 1). The output lead wire 15 is taken out from the solar battery cell 11 through the back surface window 14w opened in the back surface protection member 14.

  In the present embodiment, a large number of solar cells 11 are connected in series or in parallel to form a solar cell group. However, in the following, the solar cell group is simply indicated as the solar cell 11.

  The solar battery cell 11 is formed as a solar battery element of various forms. For example, the thin film solar cell element and the sealing member 13 directly formed on the back surface 10r of the translucent substrate 10 are also disposed on the translucent substrate 10 side, and the thin film solar cell is disposed via the sealing member 13 Various elements such as an element (or a substrate type solar cell element) can be used.

  A sealing member 13 that seals and protects the solar cells 11 is formed between the solar cells 11 and the back surface protection member 14. The sealing member 13 is not limited to be interposed between the solar battery cell 11 and the back surface protection member 14, and may be disposed between the translucent substrate 10 and the solar battery cell 11.

  The output lead wire 15 is preferably extended from the center of the depth of the recess 25 toward the bottom. According to this configuration, in the solar cell module 1, since the output lead wire 15 is extended (pressed) toward the bottom from the center of the depth of the recess 25, the output lead wire 15 is difficult to be removed from the recess 25. Therefore, the output lead wire 15 can be reliably connected to the terminal plate 21 (recessed portion 25).

  Moreover, it is preferable that the recessed part 25 is press-contacted in the plate | board thickness direction from both sides, and the output lead wire 15 is pinched | interposed by the recessed part 25. FIG. According to this configuration, the solar cell module 1 is in a state in which the concave portion 25 sandwiches the output lead wire 15, so the output lead wire 15 is securely fixed by the concave portion 25, and the output lead wire 15 and the terminal plate 21 (recess portion) 25) to improve the bond strength. The concave portion 25 is configured to sandwich the output lead wire 15 by being pressed from both sides, for example.

  The output lead wire 15 is preferably bonded to the terminal board 21 by the conductive adhesive member 30 at the entrance 25 w of the recess 25. With this configuration, since the output lead wire 15 is bonded (connected) by the adhesive member 30 at the entrance 25w of the concave portion 25, the solar cell module 1 ensures high coupling between the output lead wire 15 and the terminal plate 21. Achieve a reliable connection. As the adhesive member 30, solder, a conductive adhesive (conductive paste), or the like can be applied. It is also possible to perform welding using a welding jig 46 (see FIG. 2E, a welding apparatus) without using the adhesive member 30.

  The translucent substrate 10 and the back surface protection member 14 are formed of, for example, a glass plate, and the sealing member 13 is formed of, for example, EVA (ethylene vinyl acetate) resin, PET (polyethylene terephthalate) resin, or the like.

  Further, at the end portion 23, the end portion of the output lead wire 15 is bent toward the back surface 24 r side of the mounting portion 24. Therefore, the output lead wire 15 is more reliably coupled (electrically connected) to the terminal plate 21.

  The terminal structure 20 according to the present embodiment includes a terminal plate 21 to which an output lead wire 15 taken out from a connection target (in this embodiment, a solar battery cell 11) is connected, and a connection target (solar battery). Cell 11. Directly provided with a support portion 29 that is attached to the solar cell module 1 or the back surface protection member 14 and supports the terminal plate 21. An output cable (not shown) is connected to the terminal board 21 by screwing or the like.

  In the terminal structure 20, the terminal plate 21 includes a passage portion 22 that allows the output lead wire 15 to pass from the connection object (solar cell 11) side to the outside, and an end portion 23 that is disposed away from the passage portion 22. The mounting portion 24 on which the output lead wire 15 is mounted from the passage portion 22 to the end portion 23, and the concave portion 25 in which the mounting portion 24 is recessed toward the connection object (solar cell 11), are supported. The portion 29 is configured to support the back surface 24r of the placement portion 24.

  Therefore, since the terminal structure 20 supports the terminal plate 21 (the back surface 24r of the mounting portion 24) by the support portion 29 attached to the connection target (solar cell 11), the entrance 25w of the recess 25 is on the outside. Since it is in an exposed form, it is easy to push the output lead wire 15 into the recess 25 from the outside, and the output lead wire 15 is coupled to the terminal plate 21 with high accuracy to improve connection reliability.

  That is, since the entrance 25w of the recess 25 faces outward, the output lead wire 15 can be easily pushed into the recess 25. The support portion 29 is formed of an appropriate synthetic resin that can be easily molded and has high insulation properties, such as epoxy resin and PET.

  In the solar cell module 1, the terminal structure 20 is covered with an appropriate terminal box (not shown) to eliminate the influence from the external environment. In addition, a power cable (not shown) that supplies photovoltaic power to the outside is connected to the terminal structure 20 (terminal plate 21).

  The terminal structure 20 will be further described in detail in the second embodiment. Moreover, although the terminal structure 20 illustrated the case where it applied with respect to the solar cell module 1 (solar cell 11) in this Embodiment, with respect to apparatuses (connection object) other than the solar cell module 1. FIG. However, it can be applied.

  Next, based on FIG. 2A thru | or FIG. 2D, each process when connecting the output lead wire 15 to the terminal board 21 (terminal structure 20), the terminal structure coupling | bonding apparatus 40 which forms the terminal structure 20, and a terminal A method for connecting the output lead wire 15 to the plate 21 (a method for manufacturing the solar cell module 1) will be described.

  FIG. 2A is a perspective view showing a state of terminal plate 21 constituting a part of terminal structure 20 according to Embodiment 1 of the present invention as viewed from obliquely above. In addition, the translucent board | substrate 10, the photovoltaic cell 11, the back surface protection member 14, the support part 29, etc. which comprise the principal part of the solar cell module 1 are abbreviate | omitting illustration for convenience of explanation (the following is the same). ).

  The terminal plate 21 is formed of an elongated flat plate-like conductor (for example, copper, aluminum alloy, etc.), a passage portion 22 (opening portion 27) is disposed at one end, and a position away from the passage portion 22 on the opposite side. An end portion 23 is disposed at the end. In addition, a placement portion 24 on which the output lead wire 15 is placed and abutted is disposed between the passage portion 22 and the end portion 23. In addition, the planar dimension of the terminal board 21 is set suitably. The thickness of the terminal board 21 can be set to, for example, about 0.5 mm to several mm, but is not particularly limited thereto.

  A part of the mounting portion 24 having a flat plate shape is bent toward the solar battery cell 11 (back surface protection member 14) to form a groove-shaped recess 25. Since the entrance 25w of the recess 25 is arranged on the outside (opposite side with respect to the solar battery cell 11), the output lead wire 15 placed on the placement portion 24 can be easily accommodated (engaged and fitted). )can do.

  FIG. 2B is a perspective view showing a state in which the output lead wire 15 is placed on the placement portion 24 of the terminal board 21 according to Embodiment 1 of the present invention.

  The output lead wire 15 drawn out from the solar battery cell 11 passes through the passage portion 22 and is placed (contacted) on the placement portion 24. The output lead wire 15 has a length protruding from the end portion 23 in addition to the length from the placement portion 24 to the end portion 23. That is, the output lead wire 15 is accommodated in the recess 25 and has a length that can be further bent back at the end 23.

  2C is a perspective cross-sectional view showing a cross-sectional state when the output lead wire 15 placed on the placement portion 24 of the terminal board 21 according to Embodiment 1 of the present invention is pushed into the recess 25 by the push-in jig 41. FIG. . For easy understanding, a cross section of the terminal plate 21 at a position corresponding to the side surface in the width direction of the output lead wire 15 is shown.

  The output lead wire 15 placed on the placement portion 24 is pushed into the recess 25 by the pushing jig 41. Since the pushing jig 41 is positioned with high accuracy by the pushing control mechanism portion 42, the output lead wire 15 can be pushed into the recess 25 with high accuracy.

  The pushing jig 41 can be moved manually, but in this embodiment, the pushing and controlling mechanism unit 42 is used to automatically control the movement and positioning. The push-in control mechanism unit 42 is constructed by applying an appropriate mechanism.

  The pushing jig 41 has a thin wedge shape that uniformly pushes the whole in the width direction of the output lead wire 15, and the output lead wire 15 is deeper than half of the depth in the depth direction of the concave portion 25 from the entrance 25 w of the concave portion 25. It is preferable that the position is controlled so that the output lead wire 15 is pushed in. With this configuration, the output lead wire 15 is inserted into a portion more than half of the depth of the recess 25, and is thus sufficiently coupled (connected) to the recess 25 (terminal plate 21).

  As described above, the terminal structure coupling device 40 according to the present embodiment is connected to the output lead wire 15 taken out from the connection object (in the present embodiment, the solar battery cell 11 or the solar battery module 1). The output lead wire 15 is coupled to a terminal structure 20 that includes a terminal plate 21 and a support portion 29 that is attached to a connection object (solar cell 11) and supports the terminal plate 21.

  In addition, as above-mentioned, the terminal board 21 with which the terminal structure 20 is provided is the passage part 22 (opening part 27) which allows the output lead wire 15 to pass outside from the connection object (solar cell 11) side, and a passage part. End portion 23 arranged away from 22, placement portion 24 on which output lead 15 is placed from passage portion 22 to end portion 23, and placement portion 24 of connection object (solar cell 11). And a recessed portion 25 recessed to the side.

  The terminal structure coupling device 40 includes a pushing jig 41 that pushes the output lead wire 15 placed on the placing section 24 into the recess 25, and a pushing control mechanism section 42 that controls the position of the pushing jig 41.

  Therefore, since the terminal structure coupling device 40 according to the present invention controls the position of the pushing jig 41 by the control mechanism unit, the pushing of the output lead wire 15 into the concave portion 25 can be automatically executed. To improve.

  The output lead wire 15 is preferably inserted deeper in the recess 25 than the center in the depth direction. Therefore, it is preferable that the pushing jig 41 has a shape that can be inserted in the depth direction into the recess 25 through the gap of the entrance 25w.

  Moreover, it is preferable that the front-end | tip of the pushing jig | tool 41 is made into the aspect by chamfering. By chamfering the tip of the pushing jig 41, the output lead 15 is prevented from being damaged when the output lead 15 is pushed into the recess 25.

  In addition, the recessed part 25 may have an appropriate elasticity and a shape that sandwiches the output lead wire 15 at the entrance 25w. In the case of this configuration, the strength of the output lead wire 15 is required to be able to resist the pressure contact force due to the elasticity of the entrance 25w. Further, the output lead wire 15 is in a state of being clipped by elasticity from both sides of the recess 25 (pinched and fixed). However, when the output lead wire 15 is thin, it is preferable to press the output lead wire 15 from both sides of the recess 25 after the output lead wire 15 is pushed into the recess 25.

  2D shows a state in which the output lead wire 15 and the entrance 25w of the recess 25 are bonded by the adhesive member 30 after the output lead wire 15 is inserted into the recess 25 formed in the terminal board 21 according to Embodiment 1 of the present invention. FIG.

  In this embodiment, in order to ensure the connection between the output lead wire 15 and the terminal plate 21, the output lead wire 15 and the terminal plate 21 (concave portion 25, mounting portion 24) are bonded using the adhesive member 30. (Fixed). Note that the adhesive member 30 is preferably solder, and a conductive adhesive (for example, copper paste or silver paste) can be applied as appropriate.

  Note that a plug (preferably a conductive plug) having the same shape as the push jig 41 is made to function as the push jig 41 with respect to the output lead wire 15 pushed into the recess 25, and the output lead wire 15 is It is also possible to maintain the pushed state with a stopper. At this time, an appropriate adhesive (preferably a conductive adhesive when a conductive plug is used) may be formed so as to fix the top surface of the plug, the output lead wire 15 and the mounting portion 24. good.

  FIG. 2E is a modification of the terminal structure 20 shown in FIG. 2D, and a state when the output lead wire 15 is welded to the terminal plate 21 (mounting portion 24) by the welding jig 46 instead of the adhesive member 30. FIG.

  By pressing the welding jig 46 of the welding apparatus against the output lead wire 15 and supplying the welding power 46e with the output lead wire 15 in contact with the placement portion 24, the output lead wire 15 and the placement portion are supplied. 24 can be fixed by welding.

  The process of connecting the output lead wire 15 to the recess 25 described above is also a manufacturing method for manufacturing the solar cell module 1 as it is.

  That is, the manufacturing method of the solar cell module 1 according to the present embodiment includes a translucent substrate 10 on which sunlight is incident from the front surface 10s side, and a solar cell disposed on the back surface 10r side of the translucent substrate 10. 11, a back surface protection member 14 that covers and protects the solar battery cell 11, an output lead 15 from which the output of the solar battery cell 11 is guided and taken out from the back surface protection member 14, and an outer surface of the back surface protection member 14. And a terminal plate 21 to which the output lead wire 15 is connected.

  The manufacturing method of the solar cell module 1 includes a step (see FIGS. 2A and 2B) of passing the passage portion 22 of the terminal plate 21 through the output lead wire 15, and the output lead wire 15 of the mounting portion 24 of the terminal plate 21. 2 (see FIG. 2B) and a step (see FIG. 2C) of pushing the output lead wire 15 placed on the placement portion 24 into the concave portion 25 in which the placement portion 24 is recessed.

  Therefore, the manufacturing method of the solar cell module 1 according to the present embodiment allows the output lead wire 15 and the terminal plate 21 to be easily and accurately inserted into the concave portion 25 in which the mounting portion 24 is recessed. The solar cell module 1 having a high connection reliability is manufactured by improving the mechanical coupling strength between the two and the other easily.

  Next, based on FIG. 3A and FIG. 3B, the process of press-contacting the recessed part 25 in the plate | board thickness direction from both sides and making the connection of the output lead wire 15 and the recessed part 25 (terminal board 21) more reliable is demonstrated.

  FIG. 3A is a cross-sectional view showing a cross-sectional state in a pressing process in which output lead wire 15 inserted in recess 25 of terminal plate 21 according to Embodiment 1 of the present invention is sandwiched by pressing jig 44.

  FIG. 3B is a cross-sectional view showing a cross-sectional state in which the concave portion 25 sandwiches the output lead wire 15 by the press-contacting process of FIG. 3A.

  As described above, the concave portion 25 is pressed by the pressure welding jig 44 from both sides in the plate thickness direction, and the output lead wire 15 is sandwiched by the concave portion 25 (inner side surface 25s) (pressing step). Therefore, since the solar cell module 1 is in a state where the concave portion 25 sandwiches the output lead wire 15 because both sides of the concave portion 25 are pressed, the output lead wire 15 is securely fixed by the concave portion 25 and the output lead The bonding strength between the wire 15 and the terminal plate 21 (concave portion 25) is improved.

  When the concave portion 25 is pressed, a pressure welding jig 44 that presses the output lead wire 15 from both sides of the concave portion 25 and a pressure control mechanism 45 that controls the position of the pressure welding jig 44 are applied. The pressure welding jig 44 and the pressure welding control mechanism 45 can constitute a part of the terminal structure coupling device 40. That is, it is preferable that the terminal structure coupling device 40 includes a pressure welding jig 44 and a pressure control mechanism 45.

  The pressure welding process is also a part of the manufacturing method of the solar cell module 1, and the manufacturing method of the solar cell module 1 is a step of pressing the concave portion 25 in the thickness direction from both sides in addition to the above-described steps (pressure welding process). ), And the output lead wire 15 is pressed against the inner side surface 25s of the recess 25 to improve the coupling strength between the output lead wire 15 and the terminal plate 21.

  In addition, after the press contact process of the recessed part 25, the more reliable fixation and connection are attained by adhere | attaching the adhesive member 30 with respect to the entrance 25w (FIG. 2D). When the recess 25 is made elastic and the output lead wire 15 is sandwiched at the entrance 25w, there is no need to provide a pressure contact process.

<Embodiment 2>
With reference to FIG. 4A thru | or FIG. 4C, the modification (FIG. 4A: recessed part 25a. FIG. 4B: recessed part 25b) of the recessed part 25 of the terminal structure 20 (terminal board 21) with which the solar cell module 1 demonstrated in Embodiment 1 is provided. ) Will be described as the terminal structure 20 according to the present embodiment. In the following description, the concave portion 25a and the concave portion 25b may be simply referred to as the concave portion 25 when it is not necessary to distinguish between them.

  In addition, since the basic structure of the terminal structure 20 (terminal board 21 and recessed part 25) which concerns on this Embodiment is the same as that of the terminal structure 20 which concerns on Embodiment 1, it uses a code | symbol and mainly. Explain the different points.

  FIG. 4A is a cross-sectional view showing a cross-sectional state of the inner side surface 25s of the recess 25 (recess 25a) included in the terminal structure 20 (terminal plate 21) according to Embodiment 2 of the present invention.

  4B is a cross-sectional view showing a cross-sectional state when the inner surface 25s of the concave portion 25 (the concave portion 25a) shown in FIG.

  In the terminal structure 20 (terminal plate 21) according to the present embodiment, it is preferable that the inner side surface 25s of the recess 25a is an uneven surface.

  Therefore, in the solar cell module 1, since the inner surface 25s of the recess 25a is an uneven surface, the uneven surface forms a return to the output lead wire 15 to prevent the output lead wire 15 from moving. The bonding strength between the terminal board 21 and the terminal board 21 is improved.

  In addition, the concave and convex surface of the concave portion 25a has a sawtooth cross section in the thickness direction. Therefore, in the solar cell module 1, since the inner surface 25s of the recess 25a is a serrated uneven surface, a highly accurate uneven surface is formed, and therefore the output lead wire 15 and the terminal plate 21 are coupled with high accuracy. Let

  In addition, a more reliable coupling state can be secured by press-contacting the recess 25a, and the working yield and reliability of the connection are improved.

  FIG. 4C is a cross-sectional view showing a cross-sectional state of the inner side surface 25s of the recess 25 (recess 25b) included in the terminal structure 20 (terminal plate 21) according to Embodiment 2 of the present invention.

  In the terminal structure 20 (terminal plate 21) according to the present embodiment, the inner side surface 25s of the recess 25b is preferably an uneven surface.

  Therefore, in the solar cell module 1, since the inner surface 25s of the recess 25b is an uneven surface, the uneven surface forms a return with respect to the output lead wire 15 to prevent the output lead wire 15 from moving. The bonding strength between the terminal board 21 and the terminal board 21 is improved.

  Further, the uneven surface of the recess 25b has a corrugated cross section in the thickness direction. Therefore, in the solar cell module 1, since the inner side surface 25s of the recess 25b is a corrugated uneven surface, a highly accurate and smooth uneven surface is formed. Therefore, the output lead wire 15 and the terminal plate 21 are connected with high accuracy. To join.

  Furthermore, the concave and convex surfaces of the concave portions 25b are shaped so as to follow the other waveform. Therefore, since the solar cell module 1 can sandwich the output lead wire 15 over a long distance with the corrugated uneven surface, the coupling strength between the output lead wire 15 and the terminal plate 21 is improved. The connection resistance between the output lead wire 15 and the terminal board 21 is suppressed.

  The first embodiment and the second embodiment are applied to each other as long as no contradiction occurs.

DESCRIPTION OF SYMBOLS 1 Solar cell module 10 Translucent board | substrate 10s Surface 10r Back surface 11 Solar cell 13 Sealing member 14 Back surface protection member 14w Back surface window 15 Output lead wire 20 Terminal structure 21 Terminal board 22 Passing part 23 End part 24 Mounting part 24r Back surface 25, 25a, 25b Recessed portion 25w Entrance 25s Inner side surface 27 Opening portion 29 Supporting portion 30 Adhesive member 31 Welding portion 40 Terminal structure coupling device 41 Pushing jig 42 Pushing control mechanism portion 44 Pressure welding jig 45 Pressure welding control mechanism portion 46 Welding Jig 46e Welding power

Claims (12)

A translucent substrate on which sunlight is incident from the front surface side, a solar cell disposed on the back surface side of the translucent substrate, a back surface protection member that covers and protects the solar cell, and the solar cell An output lead wire from which the output is guided and taken out from the back surface protection member, and a terminal plate disposed outside the back surface protection member and connected to the output lead wire,
The terminal plate includes a passage portion through which the output lead wire passes from the solar cell side to the outside, an end portion disposed away from the passage portion, and the passage portion and the end portion. A mounting portion on which the output lead wire is mounted; and a concave portion in which the mounting portion is recessed toward the solar cell,
The said output lead wire is arrange | positioned at the said recessed part. The solar cell module characterized by these. The solar cell module according to claim 1,
The solar cell module, wherein the output lead wire is extended from the center of the depth of the recess toward the bottom. The solar cell module according to claim 1 or 2, wherein
The solar cell module, wherein the output lead wire is sandwiched between the recesses. The solar cell module according to any one of claims 1 to 3, wherein
The solar cell module, wherein an inner side surface of the recess is an uneven surface. The solar cell module according to claim 4,
The uneven surface has a sawtooth cross section in the thickness direction. The solar cell module according to claim 4,
The uneven surface has a corrugated cross section in the plate thickness direction. The solar cell module according to claim 6, wherein
The said uneven surface is made into the shape which mutually follows the other waveform, The solar cell module characterized by the above-mentioned. The solar cell module according to any one of claims 1 to 7,
The solar cell module, wherein the output lead wire has a strip shape. The solar cell module according to any one of claims 1 to 8, wherein
The said output lead wire is adhere | attached on the said terminal board by the electroconductive adhesive member in the entrance of the said recessed part. The solar cell module characterized by the above-mentioned. A terminal structure including a terminal plate to which an output lead wire taken out from a connection target is connected, and a support part that is attached to the connection target and supports the terminal plate,
The terminal plate includes a passage portion that allows the output lead wire to pass from the connection object side to the outside, an end portion that is disposed away from the passage portion, and the output lead wire from the passage portion to the end portion. And a mounting portion that is mounted over and a recessed portion in which the mounting portion is recessed toward the connection object,
The said support part is set as the structure which supports the back surface of the said mounting part. The terminal structure characterized by the above-mentioned. A terminal structure that couples the output lead wire to a terminal structure that includes a terminal plate to which an output lead wire taken out from the connection target is connected, and a support part that is attached to the connection target and supports the terminal plate. A body coupling device,
The terminal plate includes a passage portion that allows the output lead wire to pass from the connection object side to the outside, an end portion that is disposed away from the passage portion, and the output lead wire from the passage portion to the end portion. And a mounting portion that is mounted over and a recessed portion in which the mounting portion is recessed toward the connection object,
A pushing jig for pushing the output lead wire inserted into the concave portion and placed on the placement portion into the concave portion;
A terminal structure coupling device, comprising: a push control mechanism that controls a position of the push jig. A translucent substrate on which sunlight is incident from the front surface side, a solar cell disposed on the back surface side of the translucent substrate, a back surface protection member that covers and protects the solar cell, and the solar cell Output lead wire that is led out from the back surface protection member and a terminal plate that is disposed outside the back surface protection member and to which the output lead wire is connected. ,
Passing the passage part of the terminal plate through the output lead wire;
Placing the output lead on the placement part of the terminal plate;
And a step of pushing the output lead wire placed on the placement portion into a recess in which the placement portion is recessed.

Images