JP2018148761A - Method for manufacturing solar cell module with terminal box, partial encapsulation terminal box, and block terminal box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a solar cell module with a terminal box which method is easy to do potting agent encapsulation work and mitigates temporary storage conditions of products in process.SOLUTION: A manufacturing method includes the following steps. (a) Preparing a terminal box including a terminal board having output electric wire reception region 54 and a circuit region 55 and forming a curable first potting agent 61 in the case. The circuit region 55 of the terminal board contacts with the curable first potting agent 61, which manufactures a partial encapsulation terminal box 2 in which the output electric wire reception region 54 is isolated from the curable first potting agent. (b) Attaching the partial encapsulation terminal box 2 to a solar cell module 6 and connecting an output electric wire 10 of the solar cell module with the output electric wire reception region 54 of a terminal board 52. (c) Forming a curable second potting agent 62 in the case of the partial encapsulation terminal box 2. The output electric wire reception region of the terminal board is in contact with the curable second potting agent.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a solar cell module, and a method for manufacturing a solar cell module with a terminal box, which includes a terminal box in which a terminal plate that electrically relays an output wire of the solar cell module and a cable for external connection is arranged in a casing. Is. Moreover, this invention relates to the partial sealing terminal box used for manufacture of the solar cell module with a terminal box, and also relates to the division terminal box used for manufacture of a partial sealing terminal box.

  A terminal box is used to extract the electrical output generated by the solar cell module.

  The terminal box is made up of a terminal board disposed in the housing, a cable connected to the terminal board, and the like.

  In the present invention and specification, “cable” means an electric wire for external connection, and “output electric wire” means an electric wire for taking out the electric output of the solar cell module.

  The “output wire receiving region” of the terminal plate is a partial region of the terminal plate and is a region to which the output wire is connected. The output electric wire is connected to the output electric wire receiving region by connecting means such as soldering. Preliminary solder (sometimes referred to as service solder) may be attached to the output wire receiving area. In addition, a hole or a notch for winding the output wire may be provided in the output wire receiving region.

  The “circuit area” of the terminal board is a partial area of the terminal board, and generically refers to a diode connection portion and a cable connection portion. The diode connection part is a part of the terminal plate and connected to the electrode of the diode. The cable connecting part is a part of the terminal board and means a part where the cable is connected. Further, when the terminal board also serves as a heat sink, the heat sink is also included in the circuit area of the terminal board. Here, the heat radiating plate may have a shape having a larger surface area than a flat plate shape such as a corrugated shape or a zigzag shape, or may have a simple flat plate shape.

Conventionally, a solar cell module with a terminal box is manufactured by connecting the solar cell module and the terminal box in the following steps.
(1) A solar cell module and a terminal box are prepared.
(2) A terminal box is attached to the solar cell module, and an output wire of the solar cell is connected to an output wire receiving region of the terminal plate.
(3) Filling the internal space of the terminal box with a potting agent and curing it to seal the internal space. By the sealing step, the terminal board including the output wire receiving region and the circuit region is embedded in the curing potting agent.
(4) A lid is attached to the opening of the terminal box as necessary.
(For example, see Patent Document 1)

  The potting agent used for sealing is liquid and fluid, and requires a certain time to cure. An example of the time until curing is 24 hours (exemplification when a one-part potting agent is cured under room temperature conditions).

  In order to seal the terminal box with a potting agent, it is necessary to keep the terminal box stationary during the period from filling to curing due to the fluidity of the potting agent. Moreover, it is necessary to position the opening of the terminal box in the upward direction during the potting agent filling operation and the curing standby period.

  The dimensions of a general solar cell module are, for example, approximately 1500 mm × approximately 1000 mm × approximately 50 mm and a weight of approximately 15 kg. In order to maintain the stationary state by positioning the opening of the terminal box in the upward direction with the terminal box attached to the solar cell module, a large work place, a large-capacity stationary place and the like are required. As described above, the manufacturing of the solar cell module with a terminal box has strict requirements for the work place and temporary storage of the work-in-progress product.

  In addition, if the solar cell module is, for example, a large-sized marginal part, it is difficult to incline or vibrate the solar cell module with terminal box, and the work of spreading the potting agent in the internal space of the terminal box is difficult. It was difficult. Furthermore, in order to heat a terminal box in the state adhering to a solar cell module, since the heating chamber of large space is needed, use of the potting agent which requires a heating for hardening was difficult.

JP 2012-69593 A

  This invention makes it a subject to provide the manufacturing method of a solar cell module with a terminal box which workability | operativity improves and a work-in-progress temporary storage condition eases.

  Moreover, this invention makes it a subject to obtain the partial sealing terminal box suitable for implementing the said manufacturing method.

  Furthermore, this invention makes it a subject to obtain the division terminal box suitable for manufacturing the said partial sealing terminal box.

  Other problems of the present invention will become apparent from the description of the present invention.

  Means for solving the problems will be described below. For ease of understanding, description will be made with reference numerals corresponding to the embodiments of the present invention, but the present invention is not limited to the embodiments. A number as a symbol may indicate a part or the like collectively. When an individual part or the like is indicated in an embodiment described later, an alphabetic suffix may be added after the number.

The manufacturing method of the solar cell module with a terminal box concerning one mode of the present invention consists of the following processes.
A. A terminal box having a terminal plate 52 for relaying an output wire and an external connection cable of a solar cell module in the housing 11, the terminal plate comprising an output wire receiving region 54 and a circuit region 55, and external connection to the circuit region Preparing a terminal box to which a cable 57 is connected, filling the housing with a first potting agent, curing the first potting agent to obtain a cured first potting agent 61, A first potting agent filling step for producing a partially sealed terminal box 2 in which the circuit region 55 and the cured first potting agent 61 are in contact with each other and the output wire receiving region 54 and the cured first potting agent are isolated; Attaching and connecting step of attaching the partially sealed terminal box 2 to the solar cell module 6 and connecting the output electric wire 10 of the solar cell module to the output electric wire receiving region 54 c. A second potting agent filling step in which the second potting agent is filled in the housing of the partially sealed terminal box 2 after the attaching and connecting step, and the second potting agent is cured to form a cured second potting agent 62; A second potting agent filling step in which the cured second potting agent and the output wire receiving region 54 are in contact with each other in the body.

  In a preferred embodiment of the method for producing a solar cell module with a terminal box according to the present invention, the first potting agent and the second potting agent may be the same potting agent.

  In the present invention, the terminal box includes a terminal plate connected by a cable in the housing. In addition, the terminal box may include a terminal plate without one or more cable connections in the housing.

  In the present specification and the present specification, when distinguishing between the above-mentioned two types of terminal boards, the terminal board connected with the cable is referred to as “extraction terminal board”, and the terminal board without cable connection is not intended. It is called “intermediate terminal board”.

  In the method for manufacturing a solar cell module with a terminal box according to the present invention, the terminal board constituting the terminal box is a take-out terminal board. However, the terminal box may include one or a plurality of intermediate terminal plates in addition to the takeout terminal plate. The intermediate terminal plate may be in the same mode as the contact or isolation between the cured first potting agent and the cured second potting agent, or in a different mode. . It is most preferable that they are the same.

The partially sealed terminal box 2 according to the present invention is:
In the terminal box of the solar cell module,
A housing 11;
A terminal plate 52 positioned in the housing;
A terminal box comprising a cured first potting agent 61 and an external connection cable 57 positioned in the housing;
The terminal plate 52 includes a circuit region 55 and an output wire receiving region 54 for connecting the output wires of the solar cell module, and the external connection cable is connected to the circuit region,
The circuit area and the cured first potting agent are in contact;
The output wire receiving area and the cured first potting agent are isolated.

  In the partially sealed terminal box, the cured first potting agent 61 may exist as a single mass in the housing, or may exist as a plurality of masses in the housing. The number of lumps of the cured first potting agent 61 depends on the role assigned to the terminal board region and the relative arrangement of the plurality of terminal boards.

  The terminal area of the terminal board is the output wire receiving area, the remaining area is the circuit area, and these terminal boards are adjacent to each other in the output box receiving area and the circuit area is adjacent to the terminal box. In that case, the mass of the cured first potting agent 61 is usually one. The terminal box having the terminal plate arrangement is usually attached to the back surface of the solar cell module. In the present specification, such a terminal box is referred to as a back surface attachment type terminal box.

  An intermediate region of a single terminal board is an output wire receiving area, and there is a terminal box in which terminal boards having circuit areas assigned to both ends are arranged in a straight line in the longitudinal direction of the terminal board. An example of a terminal plate having circuit areas at both ends is a terminal plate having a cable connecting portion at one end and a diode connecting portion at the other end. In the terminal box having such a terminal plate region and terminal plate arrangement, the mass of the cured first potting agent 61 is usually plural. The terminal box having the terminal plate arrangement is usually attached to the end face of the solar cell module. In the present specification, such a terminal box is referred to as an end face attachment type terminal box.

  In the partially sealed terminal box according to the present invention, the terminal board is an extraction terminal board.

The first partition terminal boxes 4a, 4c according to the present invention are:
In the terminal box that relays the output of the solar cell module,
A housing 11 having an inner space 12 attached to a bottom plate 21 and a side wall attached to the bottom plate and directed upward from the bottom plate;
A first partition plate 31 in the housing;
An extension plate 36 in the housing;
A terminal plate 52 in the housing;
An output wire insertion window 27 opened in the housing;
A part of the side wall is a left side wall and a right side wall, and the left side wall and the right side wall are opposed to each other with the internal space 12 interposed therebetween,
The first partition plate 31 has a left side in contact with the left side wall, a right side in contact with the right side wall, and a lower side in contact with the bottom plate,
The extension plate 36 is located on the upper extension surface of the first partition plate, the extension plate has a lower side in contact with the upper side of the partition plate, a left side in contact with the left side wall, and a right side in contact with the right side wall,
The first partition plate and the extension plate divide the internal space 12 into a second chamber 13 and a first chamber 14,
There is a joint penetration part 43 at a part of the boundary between the first partition plate and the extension plate,
The terminal board has an output wire receiving area 54 and a circuit area 55;
The terminal board has an external connection cable 57 connected to the circuit area,
The terminal plate passes through the joint penetration part, the output wire receiving region 54 is positioned in the second chamber 13 and the circuit region 55 is positioned in the first chamber 14;
The output wire insertion window 27 opens into the second chamber.

  There may be one or more partition means including the first partition plate and the extension plate in a single terminal box. One or more first chambers may be provided in a single terminal box. The second chamber may be singular or plural in a single terminal box.

  In the partitioned terminal box according to the present invention, the terminal board is a take-out terminal board. However, the partition terminal box may include one or more intermediate terminal plates in addition to the extraction terminal plate.

  In a preferred embodiment of the first partition terminal box according to the present invention, the output wire insertion window 27 may be opened in the bottom plate of the second chamber. Since the back surface attachment type terminal box has a larger internal space capacity and requires a large amount of potting agent compared to the end surface attachment type terminal box, the advantage of dividing the potting agent sealing into two operations becomes even greater.

The second partition terminal boxes 4b and 4d according to the present invention are:
In the terminal box that relays the output of the solar cell module,
A housing 11 having an inner space 12 attached to a bottom plate 21 and a side wall attached to the bottom plate and directed upward from the bottom plate;
A part of the side wall is a left side wall and a right side wall, and the left side wall and the right side wall are opposed to each other with an internal space therebetween,
A second partition plate 71 in the housing;
A terminal plate 52 in the housing;
An output wire insertion window 27 opened in the housing;
The second partition plate 71 has a left side in contact with the left side wall, a right side in contact with the right side wall, and a lower side in contact with the bottom plate,
The second partition plate divides the internal space 12 into a second chamber 13 and a first chamber 14,
The terminal board has an output wire receiving area 54 and a circuit area 55;
The terminal board has an external connection cable 57 connected to the circuit area,
The terminal board crosses over the upper side 75 of the second partition plate 71, and the overriding part forms a ridge portion 76 of the terminal board, the output wire receiving area is positioned in the second chamber, and the circuit area is positioned in the first chamber. And
The height of the ridge is lower than the side wall height,
The height of the circuit area is lower than the height of the ridge,
The height of the output wire receiving area is lower than the height of the side wall;
The output wire insertion window 27 opens into the second chamber 13.

  One or more second partition plates may be provided in a single terminal box. One or more first chambers may be provided in a single terminal box. The second chamber may be singular or plural in a single terminal box.

  In a preferred embodiment of the second partition terminal box according to the present invention, the output electric wire insertion window 27 may be opened in the bottom plate of the second chamber. Since the back surface attachment type terminal box has a larger internal space capacity and requires a large amount of potting agent compared to the end surface attachment type terminal box, the advantage of dividing the potting agent sealing into two operations becomes even greater.

  In the partitioned terminal box according to the present invention, the terminal board is a take-out terminal board. However, the partition terminal box may include one or more intermediate terminal plates in addition to the extraction terminal plate.

  The present invention described above, preferred embodiments of the present invention, and components included in these can be implemented in combination as much as possible.

  In addition to the other invention specific matters, the present invention attaches a partially sealed terminal box to the solar cell module, fills the gap inside the partially sealed terminal box housing with the second potting agent, and cures the second. It is a manufacturing method of the solar cell module with a terminal box including a potting agent filling process.

  The amount of the second potting agent required for the sealing work is reduced by the volume equivalent to the volume of the first potting agent already present in the partially sealed terminal box, so a terminal box with a large outline part called a solar cell module attached. The potting agent filling operation becomes easy. In addition, since the second potting agent filled in the small volume voids practically loses fluidity in a short time, the stationary time of a large and heavy work-in-process including the solar cell module is reduced.

  The partially sealed terminal box of the present invention has a cured first potting agent positioned in the housing and in contact with the circuit area of the terminal board, in addition to other invention-specific matters, and the output of the terminal board The wire receiving area is isolated from the cured first potting agent. The partially sealed terminal box is a terminal box used for carrying out the method for manufacturing a solar cell module with a terminal box according to the present invention.

  In the production of a partially sealed terminal box, the first potting agent filling operation is the filling of the first potting agent into a relatively small and light terminal box. Therefore, the terminal box may be inclined or given vibration. Easy and easy to work with. Since the potting agent is distributed in the internal space, the ratio of good products is improved.

  The first potting agent used for the partially sealed terminal box is in contact with the circuit area. The circuit area is an area where a diode as a heat source is attached. In addition, since the first potting agent is isolated from the output wire receiving region, the amount of use is reduced as compared with the conventional potting agent that embeds the entire terminal board and seals the housing. For this reason, even if the unit price per volume is expensive, it is possible to select a potting agent having excellent thermal conductivity as the first potting agent.

  One division terminal box concerning the present invention has the 1st partition and the extension board which divide a case interior space into the 2nd chamber and the 1st chamber in addition to other invention specific matters. Since the circuit region of the terminal plate is positioned in the first chamber, a partially sealed terminal box is obtained when the first chamber is filled with the first potting agent. This partition terminal box is a terminal box suitable for producing a partially sealed terminal box.

  Other division terminal boxes concerning the present invention have the 2nd partition which divides the interior space of a case into the 2nd room and the 1st room in addition to other invention specific matters. Since the terminal board is over the upper side of the second partition plate, the output wire receiving area is located in the second chamber and the circuit area is located in the first chamber. It becomes a stop terminal box. This partition terminal box is a terminal box suitable for producing a partially sealed terminal box.

FIG. 1 is an explanatory diagram depicting a solar cell module with its light receiving surface disposed on top. FIG. 2 is an explanatory view of a method for manufacturing a solar cell module with a terminal box, FIG. 2 (a) is a perspective view of a partially sealed terminal box, and FIG. 2 (b) shows a solar cell module on its back surface. FIG. 2 (c) is a perspective view of the solar cell module with a partially sealed terminal box immediately after performing the mounting and connecting step, and FIG. 2 (d) is a second potting. It is a perspective view of the solar cell module with a terminal box (entire sealing) after performing an agent filling process. FIG. 3 is an explanatory view of the first partition terminal box, FIG. 3 (a) is a perspective view of the first partition terminal box before installation of the extension plate, and FIG. 3 (b) is the first partition after installation of the extension plate. It is a perspective view of a terminal box. FIG. 4 is an explanatory view of the first partition terminal box, FIG. 4 (a) is a plan view, and FIG. 4 (b) is a bottom view. FIG. 5 is an explanatory view of the arrangement of the first partition plate, extension plate and terminal plate in the first partition terminal box. FIG. 6 is a plan view of a housing in the first partition terminal box. 7A and 7B are explanatory views of the first partially sealed terminal box, in which FIG. 7A is a plan view and FIG. 7B is a cross-sectional view along the AA plane. 8A and 8B are explanatory views of the second partition terminal box. FIG. 8A is a plan view, FIG. 8B is a cross-sectional view in the BB plane, and FIG. 8C is a bottom view. FIG. 9 is an explanatory view of the arrangement of the second partition plate and the terminal plate in the second partition terminal box. 10A and 10B are explanatory views of the second partially sealed terminal box, in which FIG. 10A is a plan view and FIG. 10B is a cross-sectional view along the CC plane. FIG. 11 is an explanatory view of the third compartment terminal box, FIG. 11 (a) is a perspective view of the third compartment terminal box before installation of the extension plate, and FIG. 11 (b) is a third compartment after installation of the extension plate. It is a perspective view of a terminal box. 12A and 12B are explanatory diagrams of the third compartment terminal box, in which FIG. 12A is a plan view, FIG. 12B is a sectional view in the DD plane, and FIG. 12C is a side view. FIG. 13 is an explanatory view of a third partial sealing terminal box, FIG. 13A is a plan view, and FIG. FIG. 14: is a bottom view of the solar cell module with a partial sealing terminal box after the attachment connection process regarding the manufacturing method of the solar cell module with a terminal box which consists of a 3rd partial sealing terminal box and a solar cell module. 15A and 15B are explanatory views of the fourth compartment terminal box, in which FIG. 15A is a plan view, FIG. 15B is a cross-sectional view in the FF plane, and FIG. 15C is a side view. 16A and 16B are explanatory diagrams of the fourth partially sealed terminal box, in which FIG. 16A is a plan view and FIG. 16B is a cross-sectional view in the GG plane.

  Hereinafter, with reference to drawings, the manufacturing method of the solar cell module with a terminal box concerning the example of the present invention, a partial sealing terminal box, and a division terminal box are further explained. In the drawings referred to in this specification, in order to facilitate the understanding of the present invention, some of the components are schematically illustrated in an exaggerated manner. For this reason, the dimension, ratio, etc. between components may differ from a real thing. Further, the dimensions, materials, shapes, relative positions, etc. of the members and parts described in the embodiments of the present invention are not intended to limit the scope of the present invention to those unless otherwise specified. It is merely an illustrative example.

  FIG. 1 is an explanatory diagram of a solar cell module. The solar cell module 6 is illustrated with the light receiving surface disposed above. The solar cell module 6 includes a solar cell panel 8 and a frame-like aluminum support frame 9 that supports the solar cell panel 8. In the solar battery panel 8, a large number of solar cells 7 are sandwiched between a front cover member and a back cover member, and sealed with a resin injected between the cover members.

<Method for Manufacturing Solar Cell Module 1 with Terminal Box>
FIG. 2 is an explanatory diagram of a method for manufacturing the solar cell module 1 with a terminal box. FIG. 2A is a perspective view of the partially sealed terminal box 2.

  A partially sealed terminal box 2 having an extraction terminal plate 52 in the housing 11 is prepared. The extraction terminal plate 52 has an output wire receiving area 54 and a circuit area 55. The circuit region 55 is a general term for a cable connection portion and a diode connection portion. A diode that bridges the terminal board is not shown. The circuit area 55 will be described again in the first section terminal box 4a described later.

  A cable 57 is connected to the cable connection portion of the circuit region 55. The other end of the cable 57 is led out of the housing 11.

  The partially sealed terminal box 2 has two extraction terminal plates 52. The partially sealed terminal box 2 has two intermediate terminal plates 53. In the present invention, the partially sealed terminal box may have any number of intermediate terminal plates, and may not have intermediate terminal plates.

  The partially sealed terminal box 2 is filled with the first potting agent. The first potting agent fills a part of the internal space of the housing. Since the first potting agent is a fluid at the time of filling, a fractionation means for fractionating the internal space is necessary to fill a part.

Fractionation means
(1) A partition plate that is integrally formed with the housing and cannot be separated;
(2) A wall forming jig that is separated from the housing and is installed in the housing before the filling operation,
Either of them may be used. Further, the wall forming jig described in (2) may be left in the housing after the first potting agent is cured, or may be removed from the housing after the curing.

  The first potting agent is filled in the first chamber of the housing internal space fractionated by the fractionation means (the fraction box on the cable side in the terminal box shown in FIG. 2), and the cured first potting agent 61 and To do. Curing is performed by standing at room temperature, heating, irradiation with ionizing radiation, and the like.

  The cured first potting agent 61 is in contact with the circuit region 55 of the takeout terminal board 52. The cured first potting agent 61 is isolated from the output wire receiving region 54 of the takeout terminal plate 52. That is, the cured first potting agent 61 partially seals the take-out terminal board 52, the circuit region 55 is sealed, and the output wire receiving region 54 is isolated from the cured first potting agent 61 and output. The wire is ready for connection.

  The cured first potting agent 61 is in contact with the circuit area of the intermediate terminal board 53. The cured first potting agent 61 is isolated from the output wire receiving area 54 of the intermediate terminal plate 53.

  An output wire insertion window 27 is opened on the bottom surface of the partially sealed terminal box 2 and facing the output wire receiving region 54 of the extraction terminal plate 52 and the output wire receiving region 54 of the intermediate terminal plate 53.

  FIG. 2B shows the back side of the solar cell module 6. An output electric wire 10 is led out to the back surface of the solar cell module 6.

  Next, the partially sealed terminal box 2 is positioned on the solar cell module 6. At this time, the output electric wire 10 is introduced into the second chamber 13 of the housing through the output electric wire insertion window 27. Then, the output electric wire 10 is taken out and connected to the output electric wire receiving region 54 of the terminal plate 52. The connection means is a known means such as soldering, welding, or pinching. Further, the output electric wire 10 is connected to the output electric wire receiving region 54 of the intermediate terminal plate 53.

  Since the output wire receiving region 54 of the takeout terminal plate 52 and the output wire receiving region 54 of the intermediate terminal plate 53 in the partially sealed terminal box 2 are separated from the cured first potting agent 61 and are in a free state, The connection work can be performed similarly to the connection work in the conventional terminal box.

  The partial sealed terminal box 2 is attached to the solar cell module 6 after or before the connection of the output wires. The attachment is performed in the state illustrated in FIG. 2C, that is, in a state where the bottom plate of the partially sealed terminal box 2 faces the back cover member of the solar cell module 6. The means for attachment is adhesion, adhesion, combined use of adhesion and adhesion, and the like.

  After the attaching and connecting step, the output wire receiving region 54 of the extraction terminal plate 52 and the output wire receiving region 54 of the intermediate terminal plate 53 are sealed with the second potting agent. The output wire receiving region 54 of the takeout terminal plate 52 and the output wire receiving region 54 of the intermediate terminal plate 53 are in the second chamber 13 of the partially sealed terminal box 2. The output wire insertion window 27 vacant in the bottom plate of the second chamber 13 is closed by the bottom cover member of the solar cell module 6 located immediately below.

  The second chamber 13 is filled with the second potting agent and cured. Curing is performed by standing at room temperature, heating, irradiation with ionizing radiation, and the like.

  The solar cell module 1 with a terminal box thus manufactured (entirely sealed) is shown in FIG. The solar cell module 1 with a terminal box includes a solar cell module 6 and an entire sealed terminal box 3. The overall sealing terminal box 3 includes a cured first potting agent 61 positioned in the first chamber 14 and a cured second potting agent 62 positioned in the second chamber 13.

  The cured second potting agent 62 contacts and seals the output electric wire 10. The cured second potting agent 62 contacts and seals the output wire receiving region 54 of the takeout terminal plate 52. The cured second potting agent 62 contacts and seals the connecting portion between the output wire 10 and the output wire receiving region.

  Similarly, the cured second potting agent 62 contacts and seals the output wire receiving area 54 of the intermediate terminal plate 53, the output wire 10 connected thereto, and the interconnecting portion.

  A lid is attached on the entire sealed terminal box 3 as necessary. The lid is not shown.

  The first potting agent and the second potting agent are made of epoxy resin, polyurethane resin, silicon resin, or the like. These potting agents hermetically seal each member and connection part placed inside the case to prevent moisture, rainwater, dust, etc. from entering, prevent corrosion, deterioration, damage due to impact, and insulation. In addition, it has a role of conducting and radiating heat generated from the diode.

  The first potting agent and the second potting agent may be the same or different.

  Since a 1st potting agent seals a diode, it is good to select a thing excellent in heat conduction. Further, since the first chamber has a relatively complicated shape such as a space below the terminal plate, it is preferable to select a first potting agent that has excellent properties for reaching the filling space.

  Since the second potting agent seals the terminal box integrated with the solar cell module, a material having a short curing time may be selected.

  Even if the first potting agent and the second potting agent are the same, the sealing work that has been performed in a single operation in the past is partially sealed with a terminal box alone and the remaining part after being integrated with the solar cell module. Among the various advantages of the present invention that are obtained by dividing into two operations called sealing operations, the advantages of facilitating the sealing operation and relaxing the standing conditions are maintained.

<First division terminal box 4a>
FIG. 3 is an explanatory view of the first partition terminal box 4a, FIG. 3 (a) is a perspective view of the first partition terminal box before installation of the extension plate, and FIG. It is a perspective view of a one-compartment terminal box. 4A and 4B are explanatory diagrams of the first partition terminal box 4a. FIG. 4A is a plan view and FIG. 4B is a bottom view.

  FIG. 5 is an arrangement explanatory view of the first partition plate 31a, the extension plate 36a and the terminal plate in the first partition terminal box. FIG. 6 is a plan view of a housing in the first partition terminal box.

  The outline of the first partition terminal box 4 a is that the first partition plate 31 a and the extension plate 36 a partition the internal space 12 of the housing 11 into a first chamber 14 and a second chamber 13. The terminal plates 52 a and 53 a penetrate the first partition plate 31 a and the extension plate 36 a, the output wire receiving region 54 is positioned in the second chamber 13, and the circuit region 55 is positioned in the first chamber 14. The 1st division terminal box 4a is a back surface attachment type terminal box.

  Hereinafter, the 1st division terminal box 4a is demonstrated.

  The first partition terminal box 4a includes a housing 11 having a rectangular parallelepiped internal space 12. The housing 11 has a bottom plate 21 and side walls 23, 24, 25, 26 attached to the bottom plate 21 and directed upward from the bottom plate 21. The housing 11 is usually made of a synthetic resin.

  For the first compartment terminal box, the front and rear sides are the direction indicated by the arrow 91, the front side is the front, the left and right sides are the directions indicated by the arrows 92, the front side is the left, and the upper and lower sides are the directions indicated by the arrows 93, And These three axes and directions are the same for the second partition terminal box 4b, and the same applies to the partially sealed terminal boxes 2a and 2b and the whole sealed terminal box 3 in the solar cell module 1 with a terminal box.

  The side wall surrounds the bottom plate 11 with a left side wall 23 on the left side and a right side wall 24 on the right side. A cable 57 passes through the rear side wall 26. The left side wall 23 and the right side wall 24 face each other with the internal space 12 therebetween.

  There is a first partition plate 31 a in the housing 11. The first partition plate 31 a is a rectangular plate and is erected in the vertical direction in the housing 11. The first partition plate 31 a has a left side 32 in contact with the left side wall 23, a right side 33 in contact with the right side wall 24, and a lower side 34 in contact with the bottom plate 21. The first partition plate 31a may be integral with the housing 11, or a separate first partition plate may be incorporated into the housing. The first partition plate 31a is preferably formed integrally with the housing 11. In the case of one piece, the term “contact” described above can be expressed as “connected”.

  When the first partition plate 31 a is separate from the housing 11, it is preferable to determine the position of the first partition plate inside the housing 11 and install a groove or a column for restricting movement.

  There is an extension plate 36a on the upper extension surface of the first partition plate 31a. The extension plate 36 a is a rectangular plate, and the lower side 39 has a notch 44. The upper side 35 of the first partition plate 31 a and the lower side 39 of the extension plate 36 a are in close contact with each other at the boundary 42, and the notch 44 and the upper side 35 of the first partition plate 31 a form a fitting through portion 43.

  The left side surface and the right side surface of the extension plate 36 a are fitted in a groove 41 provided on the inner wall of the housing 11. The groove 41 determines the position of the extension plate 36a and restricts movement in the front-rear direction. The extension plate 36 a has a left side 37 in contact with the left side wall 23 and a right side 38 in contact with the right side wall 24.

  The fitting penetration part 43 is a position where the terminal plates 52a and 53a penetrate. In manufacturing the first partition terminal box, the terminal plates 52a and 53a are arranged on the upper side 35 of the first partition plate 31a, and the extension plate 36a is positioned from above.

  In order to provide the fitting penetrating portion, a notch may be formed on the upper side of the first partition plate, or a notch may be formed on both the upper side of the first partition plate and the lower side of the extension plate.

  The height of the upper side 40 of the extension plate is equal to or lower than the height of the upper end surfaces of the side walls 23, 24, 25, 26.

  Since the height of the side wall of the casing 11 is usually the same on the front side, the rear side, the left side, and the right side, the comparison with the height of the upper side 40 of the extension plate is expressed as the height of the side wall. If the side wall height is different for some reason, the side wall height of the lowest part is set as a comparison target.

  The first partition terminal box 4a has four terminal boards, and the two terminal boards at both ends are the extraction terminal boards 52a. Two terminal boards between the extraction terminal boards 52a are intermediate terminal boards 53a. The terminal plates 52a and 53a are arranged with their longitudinal directions facing the front-rear direction.

  A cable 57 is connected to the rear portion of the extraction terminal plate 52a. The output terminal plate 52a has an output wire receiving region 54 at the front. The intermediate terminal plate 53a has an output wire receiving region 54 at the front end. The intermediate terminal board 53a has no cable connection.

  A diode 58 is connected to the terminal plates 52a and 53a. In the diode 58, two electric wires as electrodes are respectively put into a diode connection portion 68 which is a hole formed in the terminal plates 52a and 53a and soldered to be connected to the terminal plates 52a and 53a. It is mounted on the plates 52a and 53a.

  The terminal plates 52a and 53a have a heat radiating plate 56. In the illustrated first partition terminal box 4a, the heat dissipation plate 56 is a part of the terminal plate and has a flat plate shape. The heat sink may be a separate body from the terminal board. The heat sink integrated with the terminal plate may have a wave shape, a zigzag shape, or the like.

  The material of the terminal plates 52a and 53a is, for example, brass or copper.

  The circuit area 55 of the lead-out terminal plate 52 a is composed of a cable connection portion 67, a diode connection portion 68 and a heat radiating plate 56. The takeout terminal plate 52a includes an output wire receiving area 54 and a circuit area 55 which is a remaining area. The boundary line between the output wire receiving area 54 and the circuit area 55 is a line segment formed by contacting the extraction terminal plate 52a and the first partition plate 31a.

  The circuit area 55 of the intermediate terminal plate 53 a is composed of a diode connection portion 68 and a heat dissipation plate 56. The intermediate terminal board 53a includes an output wire receiving area 54 and a circuit area 55 which is a remaining area. The boundary line between the output wire receiving region 54 and the circuit region 55 is a line segment formed by the contact between the intermediate terminal plate 53a and the first partition plate 31a.

  The height of the circuit region 55 is lower than the height of the upper side 40 of the extension plate. This is because sealing is performed by filling the fluid-shaped first potting agent. When a portion higher than the upper surface of the terminal board, such as a solder deposit, is expected in the circuit area 55, the height of the place is made lower than the height of the upper side of the extension board.

  The height of the output wire receiving area 54 is lower than the height of the side wall. This is because sealing is performed by filling the fluid-shaped second potting agent. When the output wire receiving region 54 is expected to be higher than the upper surface of the terminal plate, such as a solder deposit, the height of the place is set to be lower than the height of the side wall.

  When a heat sink separate from the terminal board is present, the upper end height of the heat sink, the upper end height of the diode, and the upper end height of the cable are designed to be lower than the height of the side wall. It is for embedding and sealing these like the conventional potting agent sealing terminal box.

  The bottom plate 21 has an output wire insertion window 27a. The output wire insertion window 27 a is an opening that faces the output wire receiving region 54.

  The terminal plates 52a and 53a are placed on the pedestal 16, the pillow 18, and the first partition plate 31a, and are in a state of floating from the bottom plate 21 (see FIG. 6). The protrusions 17 enter the holes 59 in the terminal plates 52a and 53a and restrict the movement of the terminal plates 52a and 53a. The upper and lower movements of the terminal plates 52a and 53a may be restricted by attaching a spring washer to the upper end of the protrusion 17 or expanding the diameter.

<First partially sealed terminal box 2a>
FIG. 7 is an explanatory view of the first partially sealed terminal box 2a, FIG. 7 (a) is a plan view, and FIG. 7 (b) is a cross-sectional view in the AA plane.

  The first chamber 14 of the first compartment terminal box 4a is filled with the first potting agent and cured to produce the first partially sealed terminal box 2a as the cured first potting agent 61.

  The circuit regions 55 of the terminal plates 52 a and 53 a located in the first chamber 14 are in contact with the cured first potting agent 61. In FIG. 7A, illustration of parts and components buried in the cured first potting agent 61 is omitted.

  The portion of the takeout terminal plate 52 a that enters the first chamber 14 is sealed with the cured first potting agent 61. The sealing part is a cable connection part, a diode connection part, and a heat sink.

  The portion of the intermediate terminal plate 53 a that enters the first chamber 14 is sealed with the cured first potting agent 61. The sealing part is a diode connection part and a heat sink.

  Since the terminal plates 52 a and 53 a are in a state of floating from the bottom plate in the housing, the upper surface side, the lower surface side, and the end surface of the circuit region 55 are surrounded by the cured first potting agent 61.

  Since the first potting agent filling is performed by the first compartment terminal box 4a alone, the first compartment terminal box 4a can be easily tilted, tapped, vibrated, etc., and the filling operation is facilitated.

  The output wire receiving area 54 of the terminal plates 52 a and 53 a exists in the second chamber 13. The second chamber 13 is partitioned from the first chamber 14 by a first partition plate 31a and an extension plate 36a. For this reason, the first potting agent filled in the first chamber 14 does not enter the second chamber 13.

  In the first partially sealed terminal box 2a, the output wire receiving area 54 of the terminal plates 52a and 53a is isolated from the cured first potting agent 61.

<Second division terminal box 4b>
The 2nd division terminal box 4b is demonstrated.

  FIG. 8 is an explanatory view of the second partition terminal box 4b, FIG. 8 (a) is a plan view, FIG. 8 (b) is a cross-sectional view in the BB plane, and FIG. 8 (c) is a bottom view. FIG. 9 is an explanatory view of the arrangement of the second partition plate 71b and the terminal plate in the second partition terminal box.

  The second partition terminal box 4b has a second partition plate 71b that divides the internal space of the housing in the front and rear direction, and the terminal plate passes over the upper side of the second partition plate. Is located in the second chamber and the circuit area is located in the first chamber. The second partition terminal box 4b is a back surface attachment type terminal box.

  The housing in the second partition terminal box 4b, its configuration, the terminal plate portion, the layout of the role area of the terminal plate, etc. are the same as the housing in the first partition terminal box 4a. It is explanatory drawing of the 2nd division terminal box 4b, Comprising: The same code | symbol is attached | subjected to the same member and the same part as the 1st division terminal box 4a.

  There is a second partition plate 71 b in the housing 11. The second partition plate 71 b is a rectangular plate and is erected in the vertical direction in the housing 11. The second partition plate 71 b has a left side 72 in contact with the left side wall 23, a right side 73 in contact with the right side wall 24, and a lower side 74 in contact with the bottom plate 21. The second partition plate 71b may be integral with the housing 11, or a separate second partition plate 71b may be incorporated into the housing. The second partition plate 71b is preferably made integrally with the housing 11.

  The second partition plate 71 b divides the internal space of the housing 11 into a second chamber 13 and a first chamber 14.

  The second partition terminal box 4b has two extraction terminal plates 52b and two intermediate terminal plates 53b. The terminal plates 52b and 53b are arranged with their longitudinal directions facing the front-rear direction.

  The terminal plates 52b and 53b are bent so that the intersection with the second partition plate 71b is convex upward, and the ridge portion 76 rides over the upper side 75 of the second partition plate 71b. That is, the terminal plates 52b and 53b are three-dimensionally crossed with the second partition plate 71b at the ridge portion 76 thereof. At the intersecting portions, the terminal plates 52b and 53b are located on the upper side and form a ridge 76.

  The output wire receiving area 54 of the terminal plates 52 b and 53 b is positioned in the second chamber 13. The circuit area 55 of the terminal boards 52b and 53b is positioned in the first chamber.

  The boundary between the output wire receiving area 54 and the circuit area 55 of the terminal boards 52b and 53b is a ridge 76.

  When the second partition terminal box 4b is filled with the first potting agent to become the second partially sealed terminal box 2b, and further filled with the second potting agent to become the whole sealed terminal box, the ridge portion 76 is the second Sealed with potting agent.

  The upper end of the ridge portion 76 is lower than the upper end of the side wall. That is, the height of the ridge portion indicated by the arrow 83 is lower than the height of the side wall indicated by the arrow 81. The difference in height is usually 2 mm or more and 5 mm or less. This is to ensure that the ridge portion 76 is buried by the second potting agent. In addition, since a ridge part is located above the surface of a 1st potting agent, it is not embedded by the 1st potting agent.

  Since the side wall of the housing 11 has the same height on the front side, the rear side, the left side, and the right side, it is expressed as the side wall height in comparison with the height of the ridge portion described above. If the side wall height is different for some reason, the side wall height of the lowest part is set. The same applies to the height of the side wall described below.

  The height of the circuit region indicated by the arrow 84 is set lower than the height of the second partition plate indicated by the arrow 82. The difference in height is usually 2 mm or more and 5 mm or less. This is to be buried in the first potting agent. When a portion higher than the upper surface of the terminal board, such as a solder deposit, is expected in the circuit region 55, the height of the place is made lower than the height of the second partition board (arrow 82).

  The height of the output wire receiving area indicated by the arrow 85 is set lower than the height of the side wall indicated by the arrow 81. The difference in height is usually 2 mm or more and 5 mm or less. This is to be buried in the second potting agent.

  For the arrows 81, 82, 83, 84, and 85 indicating the height, the upper surface 211 of the bottom plate was used as the reference surface.

  When a heat sink separate from the terminal board is present, the upper end height of the heat sink, the upper end height of the diode, and the upper end height of the cable are designed to be lower than the height of the side wall. This is the same as a conventional potting agent sealed terminal box. The reason is to embed and seal these.

  The output wire insertion window 27b is vacant in the portion of the bottom plate 21 that faces the output wire receiving region 54 of the terminal plate.

<Second partial sealing terminal box 2b>
FIG. 10 is an explanatory view of the second partial sealing terminal box 2b, FIG. 10 (a) is a plan view, and FIG. 10 (b) is a cross-sectional view in the CC plane. It is explanatory drawing of the 2nd partial sealing box 2b, Comprising: The same code | symbol is attached | subjected to the same member and the same part as the 1st partial sealing terminal box 2a.

  The first chamber 14 of the second compartment terminal box 4b is filled with the first potting agent and cured to produce the second partially sealed terminal box 2b as the cured first potting agent 61.

  Since the lowest one of the vertical wall structures surrounding the first chamber 14 is the second partition plate 71b, the upper surface height of the cured first potting agent 61 is equal to the height 82 of the second partition plate. The upper part of the first chamber 14 is a first chamber margin 86 which is a first potting agent unfilled space. The ridges 76 of the terminal plates 52 b and 53 b are exposed from the cured first potting agent 62.

  The circuit regions 55 of the terminal plates 52b and 53b located in the first chamber 14 are buried in the cured first potting agent 61. In other words, the circuit region 55 is in contact with the cured first potting agent 61. In FIG. 10A, illustration of the parts and parts buried in the cured first potting agent 61 is omitted.

  A portion of the takeout terminal plate 52 b positioned in the first chamber 14 is sealed with the cured first potting agent 61. The sealing part is a cable connection part, a diode connection part, and a heat sink. A portion of the intermediate terminal plate 53 b positioned in the first chamber 14 is sealed with the cured first potting agent 61. The sealing part is a diode connection part and a heat sink.

  Since the terminal plates 52b and 53b are in a state of floating from the bottom plate in the housing, the upper surface side, the lower surface side, and the end surface of the circuit region 55 are surrounded by the cured first potting agent 61.

  Since the first potting agent filling operation is performed by the second compartment terminal box 4b alone, the second compartment terminal box 4b can be easily tilted, tapped, vibrated, etc., and the filling operation is facilitated.

  The output wire receiving area 54 of the terminal plates 52 b and 53 b exists in the second chamber 13. The second chamber 13 is partitioned from the first chamber 14 by a second partition plate 71b. For this reason, the first potting agent filled in the first chamber 14 does not enter the second chamber 13.

  In the second partially sealed terminal box 2b, the output wire receiving region 54 of the terminal plates 52b and 53b is isolated from the cured first potting agent 61.

  When manufacturing the solar cell module with a terminal box using the 2nd partial sealing terminal box 2b, the 2nd potting agent fills the space containing the 2nd chamber 13 and the 1st chamber margin 86. FIG. That is, the entire interior space including the second chamber 13 is filled up to the upper end of the side wall. If expressed more precisely, the second potting agent fills the second chamber 13 and at the same time fills the amount in which the ridge 76 is completely buried. Since the first chamber margin 86 is surrounded by the side wall, the second potting agent does not flow out. Thus, the entire terminal board including the ridge portion 76 is sealed with the cured first potting agent and the cured second potting agent.

<Third compartment terminal box 4c>
The 3rd division terminal box 4c is demonstrated.

  11 is an explanatory view of the third partition terminal box 4c, FIG. 11 (a) is a perspective view of the third partition terminal box before installation of the extension plate, and FIG. 11 (b) is a third view after installation of the extension plate. It is a perspective view of the division terminal box 4c. 12A and 12B are explanatory views of the third compartment terminal box 4c, in which FIG. 12A is a plan view, FIG. 12B is a cross-sectional view in the DD plane, and FIG. 12C is a side view.

  The outline of the third compartment terminal box 4c is an end face attachment type terminal box, and the internal space of the housing is divided into a first chamber or a second chamber by a partition means comprising a first partition plate and an extension plate. Terminal box.

  The housing in the third partition terminal box 4c, its configuration, the terminal plate portion, the layout of the role area of the terminal plate, and the like are the same as those in the first partition terminal box 4a and the second partition terminal box 4b. It is explanatory drawing of the 3rd division terminal box 4c, Comprising: The same code | symbol is attached | subjected to the same member and the same part as the 1st division terminal box 4a.

  The third partition terminal box 4c has two extraction terminal plates 52cl and 52cr. The extraction terminal plates 52cl and 52cr are substantially rectangular, and the cable connection portion 67, the output wire receiving region 54, and the diode connection portion 68 are arranged in the longitudinal direction from the end. The circuit region defined in the present invention includes a cable connection portion and a diode connection portion. Accordingly, the lead-out terminal plates 52cl and 52cr are arranged with a circuit region 55, an output wire receiving region 54, and a circuit region 55 in the longitudinal direction in that order from the end.

  The two lead-out terminal plates 52cl and 52cr are arranged so that the diode connection portions 68 face each other. The terminal portion of the diode 58 is electrically connected to both the diode connection portions 68. The terminal portion is a metal pedestal that is electrically connected to the electric wire as the electrode and the one electrode of the diode.

  The third partition terminal box 4c has four partition means composed of a set of the first partition plate 31c and the extension plate 36c. 12A, with respect to the extraction terminal plate 52cl arranged on the left side, one partition means (a set of 31c and 36c) is provided between the cable connection portion 67 and the output wire receiving region 54 from the left side. There is one between 54 and the diode connection 68. With respect to the extraction terminal plate 52cr arranged on the right side, one partition means (a set of 31c and 36c) is provided between the diode connection portion 68 and the output wire reception region 54 from the left side, and the output wire reception region 54 and the cable connection portion 67 There is one in between.

  The internal space of the housing is divided into five compartments of a first chamber 14, a second chamber 13, a first chamber 14, a second chamber 13, and a first chamber 14 from the left side in FIG.

  The output wire insertion window 27c is vacant on the side wall 28. The output wire insertion window 27c is in the second chamber position. There is one output wire insertion window 27 c for the single second chamber 13.

  The first partition plate is in contact with the bottom plate and the side wall of the housing, the extension plate is in contact with the side wall of the housing, the extension plate has a notch, the first partition plate and the extension plate are fitted The point etc. which form the penetration part are the same as the 1st division terminal box 4a.

  The first chamber 14 of the third compartment terminal box 4c is filled with the first potting agent and cured to form the third partial sealing terminal box 2c.

<Third partial sealing terminal box 2c>
13A and 13B are explanatory views of the third partial sealing terminal box 2c. FIG. 13A is a plan view, and FIG. 13B is a cross-sectional view in the EE plane.

  In the third partial sealing terminal box 2c, the cured first potting agent 61 is in the first chamber 14 and is in contact with the circuit region 55 of the extraction terminal plates 52cl and 52cr. The diode 58 is buried and sealed in the first potting agent 61 in the first chamber 14. In the plan view of FIG. 13 (a), parts, parts and the like sealed with the cured first potting agent 61 are not shown.

  The output wire receiving area 54 of the extraction terminal plates 52cl and 52cr is in the second chamber 13. The output wire receiving area 54 of the extraction terminal plates 52cl and 52cr is separated from the cured first potting agent 61 and is isolated.

<Solar cell module with third part sealed terminal box>
FIG. 14: is a bottom view of the solar cell module with the 3rd partial sealing terminal box 2c after the attachment connection process regarding the manufacturing method of the solar cell module with a terminal box which consists of the 3rd partial sealing terminal box 2c and a solar cell module. . In FIG. 14, a part of the solar cell module 6 (lower part in the drawing) is omitted.

  The third partially sealed terminal box 2c is attached to the end surface 601 of the solar cell module. The 3rd partial sealing terminal box 2c is attached in the arrangement | positioning aspect which the side wall 28 and the end surface 601 of a solar cell module oppose.

  The output electric wire 10 coming out of the solar cell module 6 is put into the second chamber 13 through the output electric wire insertion window 27c. The output wire 10 is electrically connected to the output wire receiving region 54 by soldering. The solar cell module 6 and the third partial sealing terminal box 2c are fixed using a paste-like adhesive.

  Thereafter, the second chamber 13 is filled with a second potting agent, which is cured to obtain a cured second potting agent 62. Since the output wire insertion window 27c opened in the side wall 28 of the second chamber 13 is blocked by the paste-like adhesive, the second potting agent in a fluid state leaks from the output wire insertion window 27c. There is no.

<Fourth division terminal box 4d, fourth partial sealing terminal box 2d, etc.>
15A and 15B are explanatory views of the fourth compartment terminal box 4d. FIG. 15A is a plan view, FIG. 15B is a cross-sectional view in the FF plane, and FIG. 15C is a side view.

  The outline of the fourth partition terminal box 4d is an end face attachment type terminal box, and has a second partition plate 71d that partitions the internal space of the housing, and the terminal plates 52dl and 52dr are the upper sides of the second partition plate. Overcoming.

  In the fourth division terminal box 4d, the arrangement of the role area of the terminal plate, the housing, the configuration thereof, and the like are the same as those of the third division terminal box 4c. In addition, the second partition plate, its configuration, and the manner in which the terminal plate rides over the second partition plate are the same as the second partition terminal box 4b.

  The fourth partition terminal box 4d has two extraction terminal plates 52dl and 52dr. The lead-out terminal plates 52dl and 52dr are substantially rectangular, and the cable connection portion 67, the output wire receiving region 54, and the diode connection portion 68 are arranged in the longitudinal direction from the end. In other words, the lead-out terminal plates 52dl and 52dr are arranged with a circuit region 55, an output wire receiving region 54, and a circuit region 55 in the longitudinal direction from the end.

  The two lead-out terminal plates 52dl and 52dr are arranged so that the diode connection portions 68 face each other. A diode 58 is electrically connected to both diode connection portions 68.

  The fourth partition terminal box 4c has four second partition plates 71d. In the lead-out terminal plate 52dl arranged on the left side in FIG. 12A, one second partition plate 71d is provided between the cable connection portion 67 and the output wire receiving region 54 from the left side, and the output wire receiving region 54 and the diode connection. There is one between the sections 68. Regarding the lead terminal plate 52dr arranged on the right side, one second partition plate 71d is provided between the diode connecting portion 68 and the output wire receiving region 54 from the left side, and one piece between the output wire receiving region 54 and the cable connecting portion 67. is there.

  The terminal plates 52dl and 52dr have their intersections with the second partition plate 71d bent upward so that the ridge portion 76 rides over the upper side of the second partition plate 71d. The terminal plates 52dl and 52dr are three-dimensionally crossed with the second partition plate 71d at the ridge portion 76 thereof. At the intersecting portions, the terminal plates 52dl and 52dr are located on the upper side and form a ridge 76.

  The internal space of the housing is defined by four second partition plates 71d from the left side in FIG. 15 (a), the first chamber 14, the second chamber 13, the first chamber 14, the second chamber 13, and the first chamber. It is divided into 14 5 sections.

  An output electric wire insertion window 27d is vacant on the side wall 28. The output wire insertion window 27d is in the second chamber position. There is one output wire insertion window 27 d for the single second chamber 13.

  The second partition plate is the same as the second partition terminal box 4b in that the second partition plate is in contact with the bottom plate and the side wall of the housing.

  The first chamber 14 of the fourth compartment terminal box 4d is filled with the first potting agent and cured to form the fourth partially sealed terminal box 2d.

  16A and 16B are explanatory views of the fourth partial sealing terminal box 2d, in which FIG. 16A is a plan view and FIG. 16B is a cross-sectional view in the GG plane.

  In the fourth partially sealed terminal box 2d, the cured first potting agent 61 is in the first chamber 14 and is in contact with the circuit region 55 of the extraction terminal plates 52cl and 52cr. The diode 58 is buried and sealed in the cured first potting agent 61 in the first chamber 14. In the plan view of FIG. 16 (a), the parts and parts sealed with the cured first potting agent 61 are not shown.

  The output wire receiving area 54 of the extraction terminal plates 52 dl and 52 dr is in the second chamber 13. The output wire receiving areas 54 of the extraction terminal plates 52dl and 52dr are separated from the cured first potting agent 61 and isolated.

  The upper part of the first chamber 14 is a first chamber margin 86 which is a first potting agent unfilled space.

  A method of manufacturing a solar cell module with a terminal box from the fourth partial sealing terminal box 2d and the solar cell module 6 includes a method of manufacturing a solar cell module with a terminal box from the third partial sealing terminal box 2c and the solar cell module; It is the same.

  The second potting agent in the case of manufacturing the solar cell module with a terminal box using the fourth partially sealed terminal box 2d fills the second chamber 13 and the first chamber margin 86. Thereby, the entire terminal board including the ridge portion 76 is sealed with the cured first potting agent and the cured second potting agent.

  As described above, the embodiments and manufacturing methods of the partition terminal box, the partially sealed terminal box, and the solar cell module with a terminal box have been described in detail with reference to the drawings, but specific configuration examples are limited to these embodiments. The present invention includes any design changes that do not depart from the gist of the present invention. An example is as follows.

  In the present invention, the casing 11 is not limited to a quadrangle in a plan view, and four corners of the quadrangle are curved, one or more of the four sides are convex or concave curves on the outside, a plan view circular or elliptical And so on. In these cases, the wall surface with which the left side of the partition plate is in contact is the left side wall, and the wall surface with which the right side is in contact is the right side wall.

  There are no restrictions on the number of intermediate terminal plates that the terminal box has in the back-face-attached terminal box and the end-face-attached terminal box. For example, these terminal boxes may have one, three, and four intermediate terminal plates. Further, for example, these terminal boxes may not have an intermediate terminal plate.

  The terminal box usually has two take-out terminal boards. However, even a terminal box having one take-out terminal plate is included in the present invention.

1 Solar cell module with terminal box 2 Partially sealed terminal box, 2a First partially sealed terminal box, 2b Second partially sealed terminal box, 2c Third partially sealed terminal box, 2d Fourth partially sealed terminal box 3 Overall Sealing terminal box 4a 1st division terminal box, 4b 2nd division terminal box, 4c 3rd division terminal box, 4b 4th division terminal box 6 Solar cell module, 601 End surface 7 Solar cell 8 Solar cell panel 9 Support frame 10 Output wire 11 Housing 12 Internal space 13 Second chamber 14 First chamber 16 Base 17 Protrusion 18 Pillow 21 Bottom plate, 211 Upper surface of bottom plate 23 Left side wall as side wall 24 Right side wall as side wall 25 Front side wall as side wall 26 With side wall A certain rear side wall 27a, 27b, 27c, 27d Output electric wire insertion window 28 Side wall 31a, 31b First partition Plate 32 Left side 33 Right side 34 Lower side 35 Upper side 36a, 36b Extension plate 37 Left side 38 Right side 39 Lower side 40 Upper side 41 Groove 42 Boundary 43 Joint through portion 44 Notch 52, 52a, 52b, 52cl, 52cr, 52dl, 52dr Some terminal block 53, 53a, 53b Intermediate terminal plate which is a terminal plate 54 Output wire receiving region 55 Circuit region 56 Heat sink 57 Cable which is a cable for external connection 58 Diode 59 Hole 61 Curing first potting agent 62 Curing first Double potting agent 67 Cable connecting portion 68 Diode connecting portion 71b, 71d Second partition plate 72 Left side 73 Right side 74 Lower side 75 Upper side 76 Ridge portion 81 Side wall height 82 Second partition plate height 83 Ridge portion height 84 Circuit area height 85 Height of output wire receiving area 86 1st chamber margin 1 arrow indicating the front and rear, the arrow showing the 92 right before the arrows, the arrows indicating arrows up and down the left 93, upper arrow

Claims (7)

The manufacturing method of the solar cell module with a terminal box which consists of the following processes.
A. A terminal box having a terminal board for relaying an output electric wire and an external connection cable of a solar cell module in a housing, the terminal board comprising an output electric wire receiving area and a circuit area, and a terminal having an external connection cable connected to the circuit area A first potting agent filling step of preparing a box, filling the casing with a first potting agent, and curing the first potting agent to obtain a cured first potting agent, the circuit area and the cured first potting A first potting agent filling step for producing a partially sealed terminal box in which the agent is in contact with the output wire receiving region and the cured first potting agent are separated from each other;
B. Attaching and connecting the partially sealed terminal box to the solar cell module, and connecting an output wire of the solar cell module to the output wire receiving region,
C. A second potting agent filling step of filling the second potting agent into the housing of the partially sealed terminal box after the attaching and connecting step and curing the second potting agent to obtain a cured second potting agent, A second potting agent filling step in which the cured second potting agent is in contact with the output wire receiving region. The manufacturing method of the solar cell module with a terminal box of Claim 1 whose 1st potting agent and 2nd potting agent are the same potting agents. In the terminal box of the solar cell module,
A housing,
A terminal board positioned in the housing;
A terminal box comprising a cured first potting agent and an external connection cable positioned in the housing,
The terminal plate comprises an output wire receiving region for connecting the circuit region and an output wire of the solar cell module, and the external connection cable is connected to the circuit region,
The circuit area and the cured first potting agent are in contact;
A partially sealed terminal box in which the output wire receiving region and the cured first potting agent are separated. In the terminal box that relays the output of the solar cell module,
A housing having an inner space surrounded by a bottom plate and a side wall attached to the bottom plate and directed upward from the bottom plate;
A first partition plate in the housing;
An extension plate in the housing;
A terminal board in the housing;
An output wire insertion window opened in the housing;
A part of the side wall is a left side wall and a right side wall, and the left side wall and the right side wall are opposed to each other with an internal space therebetween,
The first partition plate has a left side in contact with the left side wall, a right side in contact with the right side wall, and a lower side in contact with the bottom plate,
The extension plate is located on the upper extension surface of the first partition plate, the extension plate has a lower side in contact with the upper side of the partition plate, a left side in contact with the left side wall, and a right side in contact with the right side wall,
The first partition plate and the extension plate divide the internal space into a second chamber and a first chamber,
There is a combined penetration part at a part of the boundary between the first partition plate and the extension plate,
The terminal board has an output wire receiving area and a circuit area,
The terminal board has an external connection cable connected to the circuit area,
The terminal plate penetrates the joint penetration part, the output wire receiving area is positioned in the second chamber, and the circuit area is positioned in the first chamber,
The output electric wire insertion window is a compartment terminal box opened to the second chamber. The terminal box according to claim 4, wherein the output wire insertion window is open to a bottom plate of the second chamber. In the terminal box that relays the output of the solar cell module,
A housing having an inner space surrounded by a bottom plate and a side wall attached to the bottom plate and directed upward from the bottom plate;
A part of the side wall is a left side wall and a right side wall, and the left side wall and the right side wall are opposed to each other with an internal space therebetween,
A second partition plate in the housing;
A terminal board in the housing;
An output wire insertion window opened in the housing;
The second divider has a left side in contact with the left side wall, a right side in contact with the right side wall, and a lower side in contact with the bottom plate,
The second partition plate divides the internal space into a second chamber and a first chamber,
The terminal board has an output wire receiving area and a circuit area,
The terminal board has an external connection cable connected to the circuit area,
The terminal board crosses over the upper side of the second partition plate, the overriding part forms a ridge portion of the terminal board, the output wire receiving area is positioned in the second chamber, and the circuit area is positioned in the first chamber. ,
The height of the ridge is lower than the side wall height,
The height of the circuit area is lower than the height of the ridge,
The height of the output wire receiving region is lower than the height of the ridge,
The output electric wire insertion window is a compartment terminal box opened to the second chamber. The terminal box according to claim 6, wherein the output wire insertion window is open to a bottom plate of the second chamber.

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