JP2006210446A - Terminal of solar cell module and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the terminal, etc. of a solar cell module which can attain the simple structure of the terminal, little number of parts, and a low cost and a weight reduction; which can plan a low cost by the rationalization of the amount of charges of resin 18, and which can also improve a working efficiency. <P>SOLUTION: An internal lead wire 12 and a cable 15 are connected by soldering by a joint A on the backside reinforcing plate 11. A cylindrical mold 28 of a diameter (d) is set to the part of radius (r) around the joint A from the non-photodetecting face side of the backside reinforcing plate 11. A cylindrical mold 28 is configured by a material in which the resin 18 can exfoliate. Further, an exfoliating material 31 is applied to an inside. Then, a waterproof and insulating resin 18 is cast in the degree not overflowing from the cylindrical mold 28 to the interior of the cylindrical mold 28 and stands by until it cures. After the resin 18 cures, if the cylindrical mold 28 is stripped off, the resin 18 is cast which is fixed hard cylindrical. The resin 18 can be functioned as the terminal 30 with the state as it is. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a terminal of a solar cell module that relays the power generated by the solar cell module to the outside on the back reinforcing plate provided on the non-light-receiving surface side of the integrally sealed solar cell module Part and its manufacturing method.

  In recent years, so-called clean energy research and development has been promoted from the viewpoint of environmental protection. Among them, solar cells convert solar energy directly into electrical energy, so they are pollution-free compared to other conventional power generation, and the solar light that is the resource can be used virtually infinitely. Has attracted a great deal of attention.

  A typical example of a solar cell (photoelectric conversion device) having a structure in which a plurality of solar cell elements formed on the same substrate are connected in series is a thin film solar cell made of polycrystalline silicon or amorphous silicon. Thin-film solar cells have industrial and technical advantages required for practical solar cells, such as being thin and lightweight, inexpensive in production cost, and easy to increase in area. Therefore, it will be the mainstream of future solar cells. The main use of thin-film solar cells is of course for power supply, but in addition to that, the demand has expanded to use for business use and general residential use attached to the roof or windows of buildings. ing. Conventional thin-film solar cells used an insulating substrate such as a glass substrate, but in recent years, a flexible type insulating substrate such as a plastic film was used from the viewpoints of weight reduction, workability, and mass productivity. Research and development of thin film solar cells is ongoing. Mass production is now possible by a continuous forming method using the roll-to-roll method that takes advantage of this flexibility.

  Solar cells are protected and modularized with a filler so that they can withstand the surrounding environment. As the above-mentioned thin film solar cell module, both the light-receiving surface side and the non-light-receiving surface side of the solar cell are used to seal the solar cell formed on the electrically insulating film substrate with an electrically insulating protective material. A protective material is known. In the thin film solar cell module, since the protective material is plastic, the strength against twisting or tensile force is weak. For this reason, there was a possibility of being damaged by an external force during construction. Therefore, as described in Patent Document 1 and Patent Document 2, a structure in which a reinforcing plate is provided on the entire back surface of the solar cell module has been developed.

  For example, in Patent Document 1, for the purpose of having the strength as a structure without requiring a heavy mount around the solar cell module, the solar cell module is provided with a solar cell on the back surface reinforcing plate provided on the entire back surface of the solar cell module. A solar cell module having a battery element, a filler, a filler protective material, and the like is used. This solar cell module is bent by a bending machine in the direction opposite to the incident light side (light receiving surface side). In Patent Document 2, when a folding molding is performed by a roll molding machine, the back surface reinforcing material is filled for the purpose of providing a solar cell module having excellent folding processability so as not to cause a depression of the filler. A solar cell module in which materials and solar cell elements are stacked is used.

  In the case of the solar cell modules disclosed in Patent Documents 1 and 2, since the entire back surface of the solar cell module is reinforced, there is a problem that the weight of the solar cell module increases and installation becomes difficult. Furthermore, since the solar cell module of Patent Document 1 is structured to bend in the direction opposite to the light receiving surface side, the workability is poor, the processing cost is increased, and a large-scale bending processing facility is required. There was a problem. In order to solve the above problems, Patent Document 3 proposes a solar cell module structure that is easy to install and reduces costs. Specifically, in Patent Document 3, in a solar cell module in which a protective layer is provided on both the light receiving surface side and the non-light receiving surface side of the solar cell, the protective layer is extended to the side of the solar cell to form a non-power generation region. And what has the structure which provided the attachment hole for solar cell module installation in the said non-electric power generation area | region is proposed. By adopting such a structure, the solar cell module can be attached to the fixing member with a screw or the like through the attachment hole, so that it is not necessary to use the attachment frame and to bend the non-power generation area, and the installation is easy. And it is supposed that cost reduction can be aimed at.

  FIG. 6 is a cross-sectional view showing the structure of a conventional solar cell module having the above-described structure. In FIG. 6, the upper part on the drawing is the light-receiving surface side on the sunlight incident side, and the lower part is the non-light-receiving surface side. Reference numeral 1 is a solar cell, 2 is an adhesive layer formed using ethylene vinyl acetate (EVA) resin or the like on the light-receiving surface side of the solar cell 1, and 3 is ethylene / ethylene on the light-receiving surface side of the adhesive layer 2. Moisture-proof layer formed using tetrafluoroethylene (ethylene tetrafluoroethylene: ETFE, ethylene / tetrafluoroethylene copolymer), etc. 4 is formed on the light-receiving surface side of moisture-proof layer 3, and glass fiber is applied to EVA resin. Reinforcing layer 5 which is filled to increase mechanical strength, 5 is a surface protective layer formed on the light-receiving surface side of reinforcing layer 4 for preventing adhesion of fouling substances using ETFE or the like. Adhesive layer 2, moisture-proof layer 3 The light-receiving surface side protective layer 6 as a weather-resistant protective layer composed of the reinforcing layer 4 and the surface protective layer 5 is laminated to protect the solar cell 1.

  6, reference numeral 7 denotes an adhesive layer formed using EVA or the like on the non-light-receiving surface side of the solar cell 1, and 8 denotes waterproof and electrical insulation on the non-light-receiving surface side of the adhesive layer 7. Insulating layer formed by using ETFE or heat-resistant polymer polyimide (polyimide), 9 also serves as a bonding member to back reinforcing plate 11 (described later) formed on the non-light-receiving surface side of insulating layer 8 The non-light-receiving surface side protective layer 10 is formed by laminating the adhesive layer 7, the insulating layer 8, and the adhesive layer 9. Reference numeral 11 denotes a back reinforcing plate that uses a laminated metal flat plate or the like adhered under the non-light-receiving surface side protective layer 10. The above-mentioned layers are integrated by a pressure heat fusion laminate.

  The above-described solar cell 1 can be either crystalline or non-crystalline, and a thin-film substrate type amorphous solar cell is particularly suitable. Lamination of each layer is generally performed downward in order from the surface protective layer 5, but the solar cell 1 and the adhesive layer 2 are integrated in advance. If necessary, some layers can be omitted.

  As shown in FIG. 6, the light-receiving surface side protective layer 6, the non-light-receiving surface side protective layer 10, and the back reinforcing plate 11 are extended to the non-power generation region R on the side of the solar cell 1. In the non-power generation region R, internal lead wires 12 of a flat foil copper wire are arranged in parallel along both sides (only one side is shown in FIG. 6) of the substantially rectangular solar cell 1, and a plus pole or a minus pole ( Both are connected to each other (not shown).

  In the vicinity of the end portion of the internal lead wire 12 described above, a terminal block 14 that relays the generated power to the outside is fixed to the back reinforcing plate 11 with an adhesive 20, and the internal lead wire 12 and the cable 15 are connected to each other. The solar cell module 13 is electrically connected to form a rectangular and flat plate as a whole.

  The internal lead wire 12 is subjected to the laminating process described above after passing through the holes 21 and 21a formed in the back surface reinforcing plate 11, the adhesive layer 9, the insulating layer 8 and the adhesive layer 7, and after the laminating process, on the back surface reinforcing plate 11 Exposed. At this time, the hole 21a provided in the portion of the back reinforcing plate 11 is processed so as not to contact the internal lead wire 12 for the purpose of insulation. The terminal block 14 is disposed in contact with the back reinforcing plate 11 so that the holes 22 of the terminal block 14 are arranged substantially coaxially on the hole 21a, and is bonded and fixed to the back reinforcing plate 11.

  The internal lead wire 12 passes through the hole 22 of the terminal block 14 and is joined to the crimp terminal 17 by soldering. The crimp terminal 17 is joined by inserting and crimping the copper wire part 26 of the cable 15 inserted from the outside of the terminal block 14 into the crimp part 25 of the crimp terminal 17. Further, the crimp terminal 17 is fixed to the inside of the terminal block 14 by a fixing member 19 such as screwing or heat welding using a hole 27 provided in the crimp terminal 17. If power generation stops after sunset, insert a backflow prevention diode (not shown) to prevent current from flowing backward from the secondary battery (not shown) on either the positive or negative pole side. If necessary, it is inserted and fixed between the internal lead wire 12 and the crimp terminal 17. Of course, a controller diode for preventing backflow may be provided between the solar battery and the secondary battery without incorporating the backflow preventing diode on the solar battery side as described above. The hole 21, hole 21a, hole 22, and the terminal block 14 are filled with a waterproof / insulating resin 18 to eliminate insulation failure due to moisture intrusion. The terminal block 14 is formed by being fastened and fixed to the back reinforcing plate 11 by adhesion, fitting, screws (not shown) or the like.

  7A and 7B are a perspective view and a cross-sectional view of the solar cell module 13 and the terminal block 14, respectively, and the internal lead wire 12 of the solar cell module 13 and the cable 15 inserted in the terminal block 14. It is a figure which shows an example of the conventional method for connecting. In FIGS. 7A and 7B, the sunlight incident side is the lower side opposite to FIG. As shown in FIGS. 7A and 7B, the inside of the terminal block 14 is filled with a resin 18, and an elastic polymer sealing material 24 is used at the base of the cable 15 drawn from the terminal block 14. The bush that had been put in. By relaxing the stress applied to the cable 15 using the elastic polymer sealing material 24, the cable 15 is flexibly adapted. The material of the elastic polymer sealing material 24 is not particularly limited, but is flexible enough to accommodate the size of the cable 15 and closely follows the material of the terminal block 14 that follows the movement of the electric wire in the cable 15. Those having elasticity are preferable.

Japanese Patent No. 2651121 Japanese Patent No. 2719114 JP 2001-7375 A

  The above-described conventional solar cell module 13 provides a structure that is easy to install and reduces costs. However, since the structure of the terminal block 14 is complicated and the number of parts is large, there is a problem that the cost is high and the weight is heavy. Furthermore, when the resin 18 is filled in the terminal block 14, there is a problem that it is difficult to optimize the filling amount of the resin 18. Accordingly, an object of the present invention has been made to solve the above-described problem, and is a terminal portion of a solar cell module in which the structure of the terminal portion is simple, the number of parts is small, and the cost and weight can be reduced. Is to provide etc.

  A second object of the present invention is to provide a terminal portion of a solar cell module and the like that can reduce the cost by optimizing the filling amount of the resin 18 and can also improve the working efficiency.

  The terminal portion of the solar cell module of the present invention draws out the electric power generated by the solar cell module on the back reinforcing plate provided on the non-light-receiving surface side of the integrally sealed solar cell module. A terminal portion of the solar cell module for relaying, an internal lead wire for guiding the electric power generated by the solar cell module to the terminal portion through the back reinforcing plate, and a cable for taking out the electric power to the outside of the solar cell module; And a waterproof and insulating resin having a predetermined shape that is exposed on the back reinforcing plate centered on the connecting portion.

  Here, in the terminal portion of the solar cell module of the present invention, the predetermined shape may be a cylindrical shape or a polygonal column shape.

  The manufacturing method of the terminal part of the solar cell module of this invention is a manufacturing method of the terminal part of the solar cell module of this invention, Comprising: An inner surface has the said predetermined shape on the said back surface reinforcement board centering on the said connection part. The mold is set, the resin is filled into the mold, and the mold is peeled off after the resin is cured.

  Here, in the manufacturing method of the terminal part of the solar cell module according to the present invention, the mold may be made of a material having peelability with respect to the resin.

  In the method for manufacturing the terminal part of the solar cell module of the present invention, the mold is a half mold, and the mold is used in combination until the resin is filled and cured, and the resin is cured and the mold is cured. When the mold is peeled off, the half mold can be removed one by one.

  Here, in the manufacturing method of the terminal part of the solar cell module according to the present invention, the method further includes the step of forming a member having peelability on the inner surface of the mold before filling the mold with the resin. be able to.

  Here, in the method for manufacturing the terminal part of the solar cell module of the present invention, the step of forming the member having peelability may include applying a release material having peelability to the resin on the inner surface of the mold. It can be done.

  Here, in the method for manufacturing the terminal portion of the solar cell module according to the present invention, the step of forming the member having peelability can apply a release tape having peelability to the resin on the inner surface of the mold. Is.

  According to the terminal portion or the like of the solar cell module of the present invention, the internal lead wire for guiding the power generated by the solar cell module to the terminal portion and the cable for taking out the power to the outside of the solar cell module are provided on the back reinforcing plate. Connect by soldering at the connection. A cylindrical mold having a diameter d is set from the non-light-receiving surface side of the back reinforcing plate at a radius r centered on the connecting portion. A release material is applied to the inner surface of the cylindrical mold. Next, between the bottom of the cylindrical mold and the solar cell module side is fixed with a double-sided tape so that the resin does not leak out of the cylindrical mold. Then, a waterproof / insulating resin is poured into the cylindrical mold so that it does not overflow from the cylindrical mold, and waits until it is cured. When the cylindrical mold is peeled off after the resin is cured, the resin solidified into a cylindrical shape is molded, and the resin can function as a terminal portion in that state. In other words, the terminal part can be molded by removing the cylindrical mold, and the cured waterproof / insulating resin itself can serve as the terminal part (terminal block, terminal box, etc.). The plastic or rubber terminal block that was used is no longer necessary. For this reason, there is an effect that the number of parts can be reduced and the cost can be reduced.

  Since the filling amount of the resin is determined by the inner diameter and the height of the cylindrical mold and can be filled appropriately, it is not used unnecessarily. Since the cylindrical mold can be reused, the number of parts can be further reduced and the cost can be reduced. As described above, there is an effect that it is possible to provide a terminal portion of a solar cell module and the like that have a simple structure of the terminal portion, a small number of parts, and can be reduced in cost and weight.

  Since the release material is applied to the inner surface of the cylindrical mold, the cylindrical mold can be easily removed after the resin poured into the cylindrical mold is molded, and the working efficiency can be improved. As a result, as described above, there is an effect that it is possible to provide a terminal portion or the like of the solar cell module that can reduce the cost by optimizing the filling amount of the resin and can also improve the working efficiency. .

  Hereinafter, each embodiment will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view showing the structure of a solar cell module in Example 1 of the present invention. In FIG. 1, the portions denoted by the same reference numerals as those in FIG. 6 (cross-sectional view showing the structure of a conventional solar cell module) indicate the same elements, and thus the description thereof is omitted. As is clear from comparison between FIG. 1 and FIG. 6, the holes 21 a of the back reinforcing plate 11 and the holes 22 of the terminal block 14 in the structure of the conventional solar cell module are not processed, and the back reinforcing plate 11 and the terminal block are not processed. 14, the adhesive 20, the fixing member 19, the crimp terminal 17 and the like are not used. As shown in FIG. 1, the internal lead wire 12 that guides the electric power generated by the solar cell module 13 to the terminal portion 30 and the cable 15 for taking out the electric power to the outside of the solar cell module 13 include the back reinforcing plate 11. The upper connection part A is connected by soldering. Further, a cylindrical die 28 (predetermined shape) having a diameter d (preferably about 40 mm) is provided on the non-light-receiving surface side of the back reinforcing plate 11 at a radius r (preferably about 20 mm) centered on the connection portion A. Set from. The cylindrical mold 28 is made of a material having releasability (for example, Teflon (registered trademark)) capable of peeling the resin 18 poured into the cylindrical mold 28 as described later. Instead of the cylindrical shape, a quadrangular prism shape or a polygonal prism shape may be used.

  2A is a plan view of the cylindrical mold 28 (including the cable 15) in the first embodiment of the present invention, FIG. 2B is a sectional view taken along line XX in FIG. 2A, and FIG. The YY sectional view in FIG. In FIG. 2 (A) to FIG. 2 (C), FIG. 2B and 2C, unlike FIG. 1, the lower part is the back reinforcing plate 11 side. As described above, the cylindrical mold 28 is made of a material from which the resin 18 can be peeled. However, as shown in FIG. 2 (A), a release material 31 is applied to the inner surface of the cylindrical mold 28 (coating). (Step of forming a release material having releasability). This is because the cylindrical mold 28 is easily removed after the resin 18 poured into the cylindrical mold 28 is molded. As shown in FIGS. 2B and 2C, a hole 29 slightly smaller than the outer diameter of the cable 15 is provided on the side surface of the cylindrical mold 28 in order to allow the cable 15 to escape.

  FIG. 3A and FIG. 3B are cross-sectional views of the terminal portion 30 and the like for explaining the method for manufacturing the terminal portion 30 in the first embodiment of the present invention. In FIG. 3A and FIG. 3B, FIG. 1, FIG. 2A thru | or FIG. 2C, and the part which attached | subjected the same code | symbol mutually show the same element, Description is abbreviate | omitted. As shown in FIG. 3A, first, a double-sided tape 32 is fixed between the bottom of the cylindrical mold 28 and the solar cell module 13 side so that the resin 18 does not leak out of the cylindrical mold 28. Thereafter, a waterproof / insulating resin 18 was poured into the inside of the cylindrical mold 28. The filling amount of the resin 18 is determined by the inner diameter k of the cylindrical mold 28 (the length obtained by excluding the thickness of the cylindrical mold 28 and the thickness of the release material 31 from the diameter d) and the height h. . The resin 18 was poured so as not to overflow from the cylindrical mold 28 and waited until it hardened when it became familiar. After the resin 18 is cured, as shown in FIG. 3B, when the cylindrical mold 28 is peeled off in the direction of arrow B, the resin 18 solidified in a cylindrical shape is molded, and the resin 18 is in its state ( It is possible to function as the terminal portion 30 in a state of being exposed and formed.

  As described above, according to the first embodiment of the present invention, the internal lead wire 12 that guides the electric power generated by the solar cell module 13 to the terminal portion 30 and the cable 15 for taking out the electric power to the outside of the solar cell module 13 are provided. The connection is made by soldering at the connection portion A on the back reinforcing plate 11. A cylindrical mold 28 having a diameter d (preferably about 40 mm) is set from the non-light-receiving surface side of the back reinforcing plate 11 at a radius r (preferably about 20 mm) centered on the connection portion A. A release material 31 is applied to the inner surface of the cylindrical mold 28. Next, a double-sided tape 32 is fixed between the bottom of the cylindrical mold 28 and the solar cell module 13 side so that the resin 18 does not leak out of the cylindrical mold 28. Thereafter, the waterproof / insulating resin 18 is poured into the cylindrical mold 28 to the extent that it does not overflow from the cylindrical mold 28, and waits until it is cured. When the cylindrical mold 28 is peeled off after the resin 18 is cured, the resin 18 solidified in a cylindrical shape is molded, and the resin 18 can function as the terminal portion 30 in that state. That is, the terminal part 30 can be molded by removing the cylindrical mold 28, and the cured waterproof / insulating resin 18 itself can serve as the terminal part 30 (terminal block, terminal box, etc.). The conventionally used plastic or rubber terminal block 14 becomes unnecessary. For this reason, the number of parts can be reduced and the cost can be reduced.

  Since the filling amount of the resin 18 is determined by the inner diameter k and the height h of the cylindrical mold 28 and can be filled to an appropriate amount, it is not used unnecessarily. Since the cylindrical mold 28 can be reused, the number of parts can be further reduced and the cost can be reduced. As described above, it is possible to provide a terminal portion of a solar cell module that has a simple structure of the terminal portion 30, has a small number of parts, and can be reduced in cost and weight.

  The cylindrical mold 28 is made of a material from which the resin 18 can be peeled, and the release material 31 is applied to the inner surface of the cylindrical mold 28. Therefore, after the resin 18 poured into the cylindrical mold 28 is molded, it is cylindrical. The mold | type 28 can be removed easily and the improvement of work efficiency can be aimed at. As a result, it is possible to provide a terminal portion or the like of the solar cell module that can reduce the cost by optimizing the filling amount of the resin 18 as described above and can improve the working efficiency.

  4 (A) and 4 (B) show plan views of cylindrical dies 28a and 28b (including cable 15) in the second embodiment of the present invention. In FIG. 4A and FIG. 4B, portions denoted by the same reference numerals as those in FIG. In Example 2, the cylindrical molds 28 that hold the resin 18 that freely flows until the waterproof / insulating resin 18 dries and hardens are the half molds 28a and 28b. As shown in FIG. 4 (A), the halves 28a and 28b that are symmetric with respect to the XX axis are combined so as to form a cylindrical die 28, and the internal lead wire as in the first embodiment. 12 and the cable 15 are connected by soldering at a connection portion A on the back reinforcing plate 11. In the same manner as in Example 1, the half dies 28a and 28b in which the diameter d (preferably about 40 mm) is combined with the portion having the radius r (preferably about 20 mm) centering on the connecting portion A are reinforced on the back surface. Set from the non-light-receiving surface side of the plate 11. A release material 31 is applied to the inner surfaces of the combined halves 28a and 28b. Next, the bottom of the combined halves 28a and 28b and the solar cell module 13 side are fixed with a double-sided tape 32 so that the resin 18 does not leak out of the combined halves 28a and 28b. Thereafter, the waterproof / insulating resin 18 is poured into the combined half molds 28a and 28b to the extent that they do not overflow from the combined half molds 28a and 28b, and waits until they are cured.

  Next, as shown in FIG. 4B, after the resin 18 is completely cured, the combined halves 28a and 28b are moved in the directions indicated by arrows C1 and C2 (YY axis direction perpendicular to the XX axis), respectively. When one side is removed, the resin 18 solidified in a cylindrical shape is molded, and the resin 18 can function as the terminal portion 30 in that state. That is, the terminal part 30 can be molded by removing one of the combined halves 28a and 28b one by one, and the cured waterproof / insulating resin 18 itself becomes the terminal part 30 (terminal block, terminal box, etc.). Since it can play a role, the plastic or rubber terminal block 14 that has been conventionally used is not necessary as in the first embodiment. For this reason, the number of parts can be reduced and the cost can be reduced.

  As in the first embodiment, the filling amount of the resin 18 is determined by the inner diameter k and the height h of the combined halves 28a and 28b (both combined and both are the same as in the first embodiment), and can be filled in an appropriate amount. Do not use too much. Since the half mold 28a and the like can be reused, it is possible to further reduce the number of parts and reduce the cost. As described above, similarly to the first embodiment, the terminal portion 30 of the solar cell module can be provided which has a simple structure of the terminal portion 30 and a small number of parts, which can be reduced in cost and weight.

  In the above-described example, the half molds 28 a and 28 b that are symmetrical with respect to the XX axis are combined so as to be like the cylindrical mold 28. After the resin 18 was completely cured, the terminal half 30 was molded by removing the combined halves 28a and 28b one by one in the directions of arrows C1 and C2 (the YY axis perpendicular to the XX axis). However, the example of the half type is not limited to being symmetric with respect to the XX axis, and the half types that are symmetric with respect to an arbitrary axis on the plan view shown in FIG. They can be combined so that they look like the mold 28. For example, halves that are symmetric with respect to the YY axis can be combined to form a cylindrical die 28. In this case, after the resin 18 is completely cured, the terminal portions 30 can be molded by removing the halves combined as described above one by one in the XX axis direction perpendicular to the YY axis. Alternatively, halves that are symmetric with respect to an axis (symmetric axis) having an angle between the XX axis and the YY axis can be combined so as to form a cylindrical mold 28. In this case, after the resin 18 is completely cured, the half mold that does not hang on the cable 15 is removed in the axial direction perpendicular to the axis (target axis), and the half mold that hangs on the cable 15 moves in the XX axis direction. The terminal part 30 can be shape | molded by removing.

  As described above, according to the second embodiment of the present invention, the halves that are symmetrical with respect to an arbitrary axis on the plan view shown in FIG. Can be. After the resin 18 is completely cured, the terminal portions 30 can be molded by removing the combined halves from each other in an appropriate direction. That is, a mold such as the half mold 28 is used in combination until the resin 18 is filled and cured, and when the resin 18 is cured and peeled off, the mold such as the half mold 28a is removed one by one. The part 30 can be molded. Even when the half mold 28a or the like and the resin 18 are in close contact with each other when the resin 18 is cured, the half mold 28a or the like can be easily disassembled because it is a half mold. . As a result, in addition to the effects of the first embodiment, it is possible to provide a terminal portion or the like of the solar cell module that can further improve the working efficiency.

  5A shows a plan view of the cylindrical mold 28 or the half mold 28a and the like (including the cable 15) in the third embodiment of the present invention, and FIG. 5B is a cross-sectional view taken along the line XX in FIG. FIG. 5C shows a YY cross-sectional view in FIG. 5A to 5C and FIG. 2A to FIG. 2C and the portions denoted by the same reference numerals indicate the same elements, and thus description thereof is omitted. 5A to 5C, for convenience of explanation, the cylindrical mold 28 and the half molds 28a and 28b are shown in the same place. In Examples 1 and 2, the release material 31 was applied to the inner surface of the cylindrical mold 28 in order to easily remove the cylindrical mold 28 after the resin 18 poured into the cylindrical mold 28 was molded. In the third embodiment, before filling the waterproof / insulating resin 18, a release tape 33 (for example, Teflon) that is peelable from the resin 18 is formed on the inner surface of the cylindrical mold 28 or the combined half mold 28 a. (Registered trademark) tape) is applied (step of forming a release material having peelability), and then the resin 18 is filled. As a result, when the cylindrical mold 28 or the combined half mold 28a is removed after the resin 18 is dried and hardened, it can be removed more easily. Improvements can be made.

  As described above, according to the third embodiment of the present invention, the cylindrical mold 28 or the combined half mold 28a is made of a material from which the resin 18 can be peeled in the same manner as in the first and second embodiments. The resin 18 is filled after a release tape 33 that is peelable from the resin 18 is applied to the inner surface of the mold 28 or the combined half mold 28a. As a result, after the resin 18 poured into the cylindrical mold 28 or the combined half mold 28a is dried and hardened, the cylindrical mold 28 or the combined half mold 28a can be further easily removed. As compared with Examples 1 and 2, it is possible to provide a terminal portion or the like of a solar cell module that can further improve the working efficiency.

  As an application example of the present invention, a solar cell having a structure in which a plurality of solar cell elements formed on the same substrate are connected in series, such as a thin film solar cell made of polycrystalline silicon or amorphous silicon, is used as a terminal. Application is mentioned.

It is sectional drawing which shows the structure of the solar cell module in Example 1 of this invention. It is a top view of the cylindrical type | mold 28 (containing cable 15) in Example 1 of this invention. It is XX sectional drawing in FIG. 2 (A). FIG. 3 is a YY cross-sectional view in FIG. It is sectional drawing of the terminal part 30 grade | etc., For demonstrating the manufacturing method of the terminal part 30 in Example 1 of this invention. It is sectional drawing of the terminal part 30 grade | etc., For demonstrating the manufacturing method of the terminal part 30 in Example 1 of this invention. It is a top view of the cylindrical type | molds 28a and 28b (including cable 15) in Example 2 of this invention. It is a top view of the cylindrical type | molds 28a and 28b (including cable 15) in Example 2 of this invention. It is a top view of the cylindrical type | mold 28 or the half type | mold 28a etc. (including cable 15) in Example 3 of this invention. It is XX sectional drawing in FIG. 5 (A). It is YY sectional drawing in FIG. 5 (A). It is sectional drawing which shows the structure of the conventional solar cell module. It is a perspective view of the solar cell module 13 and the terminal block 14 grade | etc.,. It is sectional drawing of the solar cell module 13, the terminal block 14, etc. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Solar cell, 2, 7, 9 Adhesion layer, 3 Moisture-proof layer, 4 Strengthening layer, 5 Surface protective layer, 6 Light-receiving surface side protective layer, 8 Insulating layer, 10 Non-light-receiving surface side protective layer, 11 Back surface reinforcement board, 12 Internal lead wire, 13 solar cell module, 14 terminal block, 15 cable, 17 crimp terminal, 18 resin, 19 fixing member, 20 adhesive, 21, 21a, 22, 27, 29 hole, 24 elastic polymer sealing material, 25 Caulking part, 26 Copper wire part, 28 Cylindrical type, 28a, 28b Half type, 30 Terminal part, 31 Release material, 32 Double-sided tape, 33 Release tape.

Claims (8)

It is a terminal portion of the solar cell module that relays the power generated by the solar cell module to the outside on the back reinforcing plate provided on the non-light-receiving surface side of the integrally sealed solar cell module. And
An internal lead wire for guiding the electric power generated by the solar cell module to the terminal portion through the back reinforcing plate and a connection portion connected to a cable for taking out the electric power to the outside of the solar cell module;
A terminal portion of a solar cell module, comprising: a waterproof and insulating resin having a predetermined shape that is exposed on the back reinforcing plate centered on the connection portion.   The terminal part of the solar cell module according to claim 1, wherein the predetermined shape is a cylindrical type or a polygonal column type. It is a manufacturing method of the terminal part of the solar cell module according to claim 1 or 2,
A mold having an inner surface having the predetermined shape is set on the back reinforcing plate centering on the connection portion, the mold is filled with the resin, and the mold is peeled off after the resin is cured. To manufacture the terminal part of the solar cell module.   4. The method for manufacturing a terminal part of a solar cell module according to claim 3, wherein the mold is made of a material having releasability with respect to the resin.   In the manufacturing method of the terminal part of the solar cell module according to claim 3 or 4, the mold is a half mold, and the mold is used in combination until the resin is filled and cured. A method of manufacturing a terminal part of a solar cell module, wherein the half-shaped molds are removed one by one when being cured and stripped.   6. The method for manufacturing a terminal part of a solar cell module according to claim 3, wherein a member having a peelability from the resin is formed on the inner surface of the mold before the resin is filled into the mold. The manufacturing method of the terminal part of the solar cell module further provided with the process to do.   7. The method of manufacturing a terminal part of a solar cell module according to claim 6, wherein the step of forming the member having peelability is performed by applying a release material having peelability to the resin on the inner surface of the mold. The manufacturing method of the terminal part of the solar cell module. In the manufacturing method of the terminal part of the solar cell module according to claim 6, the step of forming the member having peelability is characterized by sticking a release tape having peelability to the resin on the inner surface of the mold. To manufacture the terminal part of the solar cell module.

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