WO2018198826A1 - Solar cell module and terminal box for solar cell module - Google Patents

Abstract

This solar cell module is provided with a solar cell panel and a terminal box. The terminal box has a base body part and a main body part. The base body part is located on the solar cell panel, and includes a plate section, a hooked section, and an engaged section. The plate section is located on the solar cell panel and has a hole portion in which a wire is located. The hooked section is in a state protruding from a first portion of the plate section. The engaged section is in a state protruding from a second portion separated from the first portion in the plate section. The main body part includes a covering section, a hooking section, and an engaging section. The covering section has an opening toward the plate section side and is in a state forming an inner space together with the plate section. The engaging section is in a state protruding from a third portion of an annular side portion surrounding the opening of the covering section, and is in a state hooked to the hooked section in a state rotatable around a virtual rotation axis. The engaging section is present at a fourth portion separated from the third portion of the annular side portion, and is in a state of engagement with the engaged section.

Description

Solar cell module and terminal box for solar cell module

The present disclosure relates to a solar cell module and a terminal box for the solar cell module.

Some solar cell modules have a terminal box attached to the back side of the solar cell panel (see, for example, JP-A-2007-115915).

A solar cell module and a terminal box for the solar cell module are disclosed.

One aspect of the solar cell module includes a solar cell panel and a terminal box located on the surface of the solar cell panel. The terminal box has a base portion and a main body portion. The base portion is located on the surface. The main body portion is positioned on the base portion in a state attached to the base portion. The base portion includes a plate portion, a hooked portion, and an engaged portion. The said board part is located on the said surface, and has a hole part located so that the conducting wire which exists from the inside of the said solar cell panel to the area | region on the said surface may pass. The said covering part exists in the state which protrudes from the 1st part of the said board part. The engaged portion exists in a state of protruding from a second portion of the plate portion that is separated from the first portion. The main body portion includes a covering portion, a hanging portion, and an engaging portion. The said covering part has the opening located in the said board part side, and exists in the state which forms internal space with the said board part. The hanging portion is present in a state of protruding from the third portion of the annular side portion located in a state of surrounding the opening of the covering portion, and is virtual with respect to the covered portion. It is located in a state where it is hung so as to be rotatable about the rotation axis. The engaging portion exists in a fourth portion of the annular side portion that is separated from the third portion, and is positioned in a state of being engaged with the engaged portion. The third portion and the fourth portion are located in a state in which the third portion and the fourth portion are separated from each other in a direction perpendicular to the virtual rotation axis and along the surface.

One aspect of a terminal box for a solar cell module includes a base portion and a main body portion that can be attached to the base portion. The base portion includes a plate portion, a hooked portion, and an engaged portion. The said board part has a hole part for positioning so that the conducting wire which exists from the inside of a solar cell panel to the area | region on the surface of this solar cell panel may pass, and can be located on the said surface. The said covering part exists in the state which protrudes from the 1st part of the said board part. The engaged portion exists in a state of protruding from a second portion of the plate portion that is separated from the first portion. The main body portion includes a covering portion, a hanging portion, and an engaging portion. The covering portion has an opening that can be positioned on the plate portion side by mounting the main body portion on the base portion, and can form an internal space together with the plate portion. The hanging portion is present in a state of protruding from the third portion of the annular side portion located in a state of surrounding the opening of the covering portion, and the main body portion is located with respect to the base portion. When being mounted, it is in a state of being rotatable around a virtual rotation axis with respect to the hooked portion while being hooked on the hooked portion. The engaging portion is present in a fourth portion of the annular side portion that is separated from the third portion, and is engageable with the engaged portion.

FIG. 1 is a perspective view showing an appearance of an example of the solar cell module according to the first embodiment. FIG. 2 is a plan view showing an appearance of an example of the solar cell module according to the first embodiment viewed from the front side. FIG. 3 is a plan view showing an appearance of an example of the solar cell module according to the first embodiment viewed from the back side. FIG. 4 is an exploded cross-sectional view showing a cross section of an example of the terminal box according to the first embodiment taken along line IV-IV in FIG. FIG. 5 is an exploded perspective view showing a configuration of an example of a terminal box according to the first embodiment. FIG. 6A is a cross-sectional view showing a state during the assembly of the terminal box according to the first embodiment corresponding to the cross section taken along line IV-IV in FIG. FIG. 6B is a cross-sectional view of the terminal box along line IV-IV in FIG. FIG. 7 is an exploded perspective view showing a configuration of an example of a terminal box according to the second embodiment. FIG. 8A is an exploded cross-sectional view showing a cross section of an example of a terminal box according to the third embodiment corresponding to a cross section taken along line IV-IV in FIG. FIG. 8B is a cross-sectional view showing a cross section of an example of the terminal box according to the third embodiment corresponding to the cross section taken along line IV-IV in FIG. FIG. 9A is an exploded cross-sectional view showing a cross section of an example of a terminal box according to the fourth embodiment corresponding to a cross section taken along line IV-IV in FIG. FIG. 9B is a cross-sectional view showing a cross section of an example of the terminal box according to the fourth embodiment corresponding to the cross section taken along line IV-IV in FIG. FIG. 10 is a plan view showing an appearance of an example of the solar cell module according to the fifth embodiment viewed from the back side. FIG. 11 is an exploded cross-sectional view showing a cross section of an example of a terminal box according to the fifth embodiment along the line XI-XI in FIG. FIG. 12A is a plan view showing a configuration of an example of a base body part constituting the terminal box according to the fifth embodiment. FIG. 12B is a back view showing the configuration of an example of the main body portion configuring the terminal box according to the fifth embodiment. FIG. 13 is an exploded perspective view showing a configuration of an example of a terminal box according to the fifth embodiment. FIG. 14A is a cross-sectional view showing a state in the middle of assembly of the terminal box according to the fifth embodiment corresponding to the cross section taken along the line XI-XI in FIG. FIG. 14B is a cross-sectional view of the terminal box according to the fifth embodiment corresponding to the cross section taken along line XI-XI in FIG. FIG. 15 is an exploded cross-sectional view showing a cross section of an example of a terminal box according to the sixth embodiment corresponding to a cross section taken along line XI-XI in FIG. FIG. 16A is a cross-sectional view showing a state during the assembly of the terminal box according to the seventh embodiment corresponding to the cross section taken along the line XI-XI in FIG. FIG. 16B is a cross-sectional view of the terminal box according to the seventh embodiment corresponding to the cross section taken along line XI-XI in FIG.

In the solar cell module, a resin terminal box is generally attached to the back surface of the solar cell panel in order to output electricity obtained by photoelectric conversion to the outside. For example, a lead wire electrically connected to the photoelectric conversion unit and a cable in which an electric wire for outputting electricity is covered with a resin are connected to the terminal box. Further, for example, a bypass diode is accommodated in the terminal box. This bypass diode has an internal resistance due to a decrease in the amount of received light when a plurality of solar cell groups each including a plurality of solar cells connected in series are further connected in series. Current can be passed to avoid specific solar cell groups that are rising. Thereby, the heat_generation | fever of a photovoltaic cell can be reduced.

By the way, the solar cell module is required to have improved durability so that it can be used for a long time. For this reason, for example, it is conceivable to increase the moisture resistance of the solar cell panel by sandwiching the photoelectric conversion portion between two glass substrates from both the front side and the back side.

And in order to improve the durability of the solar cell module, in accordance with the improvement of the durability of the solar cell panel, the fixing strength of the terminal box with respect to the solar cell panel, and the long-term protection performance of the members in the terminal box, There is a need to improve.

Therefore, a base portion that is bonded to the surface of the solar cell panel and protrudes in a direction away from the surface, and has a claw portion in all directions, and a main body portion that is firmly engaged with the base portion by these claw portions. And a terminal box having: Furthermore, in order to realize the adhesion between the base portion and the main body portion, a case where a packing member for enhancing water stoppage such as an O-ring is positioned between the base portion and the main body portion can be considered.

However, it is not easy to attach the main body part to the base part while expanding the claw parts located in the four directions. Further, it is not easy to attach the main body portion to the base portion so that the compressive force is evenly applied to the packing member while spreading the claw portions.

That is, the solar cell module and the terminal box for the solar cell module have room for improvement in terms of facilitating the attachment of the terminal box to the solar cell panel.

Therefore, the inventors of the present application have created a technology for easily attaching the terminal box to the solar cell panel with respect to the solar cell module and the terminal box for the solar cell module.

In the following, various embodiments will be described with reference to the drawings. In the drawings, parts having similar configurations and functions are denoted by the same reference numerals, and redundant description is omitted in the following description. The drawings are schematically shown. 1 to 16 (b), a right-handed XYZ coordinate system is attached. In this XYZ coordinate system, the longitudinal direction on the back surface Sf2 of the solar cell module 1 to be described later is the + X direction, the short direction on the back surface Sf2 is the + Y direction, and the normal direction of the front surface Sf1 of the solar cell module 1 to be described later Is the + Z direction.

<1. First Embodiment>
<1-1. Configuration of solar cell module>
The solar cell module 1 according to the first embodiment will be described with reference to FIGS. 1 to 6B. As shown in FIGS. 1 to 3, the solar cell module 1 includes, for example, a solar cell panel 2 and a terminal box 3. Moreover, the solar cell module 1 is provided with conducting wires W1a, W1b, W1c, W1d, W1e, and W1f.

As shown in FIGS. 1 to 6B, the solar cell panel 2 includes, for example, a surface protection member 21, a surface side sealing material 22, a photoelectric conversion unit 23, a back surface side sealing material 24, And a back surface protection member 25. In the example of FIGS. 1 to 6B, the surface on the + Z direction side of the surface protection member 21 is a surface (also referred to as a front surface) Sf1 to which external light such as sunlight is irradiated. Further, the surface on the −Z direction side of the back surface protection member 25 is a surface (also referred to as a back surface) Sf2 located on the opposite side of the front surface Sf1. A frame may or may not be attached to the outer peripheral portion in a state where the front surface Sf1 and the back surface Sf2 of the solar cell panel 2 are connected.

The surface protection member 21 can protect the photoelectric conversion unit 23 from the front surface Sf1 side, for example. The surface protection member 21 has translucency with respect to light with a wavelength in a specific range, for example. As the wavelength in the specific range, for example, a wavelength of light with high intensity included in light irradiated on the solar cell module 1 and a wavelength of light that can be photoelectrically converted by the photoelectric conversion unit 23 is employed. As the surface protection member 21, for example, a plate-like member (also referred to as a first plate-like member) is used. If, for example, glass or a resin such as acrylic or polycarbonate is applied to the material of the first plate-like member, the surface protection member 21 having water shielding properties and translucency for light in a specific range of wavelengths is realized. The Specifically, as the surface protection member 21, for example, a flat plate member having a rectangular shape on both the front surface and the back surface and a thickness of about 1 mm to 5 mm is employed.

The back surface protection member 25 is positioned so as to face the front surface protection member 21, for example. The photoelectric conversion unit 23 exists in a region G <b> 2 (also referred to as a gap region) between the front surface protection member 21 and the back surface protection member 25. For this reason, the back surface protection member 25 can protect the photoelectric conversion part 23 from the back surface Sf2 side. For example, the back surface protection member 25 may have a light-transmitting property with respect to light having a specific range of wavelengths, or may not have a light-transmitting property with respect to light having a specific range of wavelengths. As the back surface protection member 25, for example, a flexible sheet-like member (also referred to as a sheet member) or a plate-like member (also referred to as a second plate-like member) is employed. For example, resin is applied to the material of the sheet member. Moreover, as a raw material, a shape, and thickness of a 2nd plate-shaped member, the thing similar to the raw material, shape, and thickness of a 1st plate-shaped member can be employ | adopted, for example.

The front surface side sealing material 22 is located, for example, in a state of covering the photoelectric conversion unit 23 from the surface protection member 21 side, and is in a state of being filled between the surface protection member 21 and the photoelectric conversion unit 23. Examples of the material of the surface side sealing material 22 include polyester resins such as ethylene vinyl acetate copolymer (EVA), triacetyl cellulose (TAC), and polyethylene naphthalate, which are excellent in translucency for light in a specific range of wavelengths. Etc. apply. Moreover, the back surface side sealing material 24 is located in the state which covers the photoelectric conversion part 23 from the back surface protection member 25 side, for example, and is in the state with which it was filled between the back surface protection member 25 and the photoelectric conversion part 23. That is, the gap region G2 located between the front surface protection member 21 and the back surface protection member 25 is in a state of being filled with a sealing material so as to cover the photoelectric conversion unit 23, for example. For example, a material similar to the material of the front surface side sealing material 22 can be applied to the material of the back surface side sealing material 24.

The photoelectric conversion unit 23 includes N (N is an integer of 1 or more) solar cells CE2 that can convert incident sunlight into electricity. As the solar cell CE2, for example, a crystalline solar cell or a thin film solar cell can be adopted. In the example of FIGS. 2 and 3, a solar cell of crystalline silicon is adopted as the solar cell CE2. And 24 solar cells CE2 are positioned in a state where they are electrically connected in series by the connecting conductor T1. Specifically, the photoelectric conversion unit 23 includes four solar battery cell groups Sg1, Sg2, Sg3, and Sg4. In each solar cell group Sg1, Sg2, Sg3, Sg4, the six solar cells CE2 arranged along the + X direction are positioned in a state of being electrically connected in series by the connection conductor T1. Furthermore, the four solar cell groups Sg1, Sg2, Sg3, Sg4 are positioned in a state where they are electrically connected in series by the connection conductor T1 in a state where they are arranged in the + Y direction.

The conducting wires W1a, W1b, W1c, W1d, W1e, and W1f exist from the solar cell panel 2 to the region on the surface of the solar cell panel 2, respectively. In the example of FIG. 2 to FIG. 6B, each of the conductive wires W1a, W1b, W1c, W1d, W1e, and W1f is located in a state of being electrically connected to the solar battery cell CE2, and the solar battery panel 2 It is located from the inside to the region on the surface of the solar cell panel 2. Each of the conductive wires W1a, W1b, W1c, W1d, W1e, and W1f is made of a material having excellent conductivity such as copper. As each conducting wire W1a, W1b, W1c, W1d, W1e, W1f, for example, a copper foil is employed. Further, for example, if a copper foil coated with solder is adopted as each of the conductive wires W1a, W1b, W1c, W1d, W1e, W1f, it is easy to solder the conductive wires W1a, W1b, W1c, W1d, W1e, W1f. It is. Each conducting wire W1a, W1b, W1c, W1d, W1e, W1f is positioned in a state where it is connected to the terminal box 3 located on the back surface Sf2 through the first hole Th0 of the back surface protection member 25, for example. is doing. Here, for example, insulating sheets I1a, I1b, I1c, and I1d may be positioned between the conductive wires W1a, W1b, W1c, W1d, W1e, and W1f and the photoelectric conversion unit 23. Thereby, the short circuit by contact with each electrode W1a, W1b, W1c, W1d, W1e, W1f and the electrode of the photovoltaic cell CE2 does not arise easily.

In the example of FIGS. 2 and 3, the first conductive wire W1a and the second conductive wire W1b are electrically connected to the solar cell group Sg1. It is located in a state where the third conductor W1c is electrically connected to the solar cell group Sg2, and is located in a state where the fourth conductor W1d is electrically connected to the solar cell group Sg3. Yes. Furthermore, the conducting wire W1c and the conducting wire W1d are located in a state where they are electrically connected via the connecting conductor T1. Further, for example, an insulator such as polyethylene terephthalate (PET) is sandwiched between the intersection of the conductive wire W1b and the connection conductor T1 and the intersection of the conductive wire W1e and the connection conductor T1. Yes. As a result, the conductors W1b, W1e and the connection conductor T1 are insulated. The fifth conductive wire W1e and the sixth conductive wire W1f are electrically connected to the solar cell group Sg4. The six conductors W1a, W1b, W1c, W1d, W1e, and W1f may be positioned in a state where they are inserted through different first holes Th0. Further, two or more of the six conductors W1a, W1b, W1c, W1d, W1e, and W1f may be positioned in a state of being inserted through one first hole Th0. Each first hole Th0 is sealed with a sealing material such as a butyl resin or a polyisopropylene resin in a state where the conductive wires W1a, W1b, W1c, W1d, W1e, and W1f are inserted. Located in the state.

The terminal box 3 is a so-called junction box. The terminal box 3 is positioned on the surface of the solar cell panel 2 as shown in FIG. In the example of FIG. 1 to FIG. 6B, the four terminal boxes 3 a, 3 b, 3 c, 3 d are positioned in a state where they are fixed on the back surface Sf 2 of the solar cell panel 2. Each terminal box 3a, 3b, 3c, 3d can be fixed to the back surface Sf2 by adhesion using, for example, a silicon-based adhesive. As shown in FIG. 1, the output cables C <b> 1 for outputting electricity generated in the photoelectric conversion unit 23 are positioned in the terminal boxes 3 a and 3 d in a state where they are electrically connected. In the example of FIG. 1, the output cable C1a is located in the terminal box 3a in a state where it is electrically connected. In the terminal box 3a, the output cable C1a and the conductive wire W1a are located in an electrically connected state. The terminal box 3d is positioned in a state where the output cable C1b is electrically connected. In the terminal box 3d, the output cable C1b and the conducting wire W1f are located in an electrically connected state. For example, when the output cable C1a is a positive cable, the output cable C1b is a negative cable. For example, when the output cable C1a is a negative cable, the output cable C1b is a positive cable.

<1-2. Terminal box>
The terminal boxes 3b and 3c will be described with reference to FIGS. 4, 5, 6A, and 6B. The terminal box 3b and the terminal box 3c have the same structure. For this reason, here, the terminal box 3b will be described as an example.

As shown in FIGS. 4, 5, 6 (a) and 6 (b), the terminal box 3 b has a base portion 31 and a main body portion 32. Further, the terminal box 3b has a packing part Pk1 located between the base part 31 and the main body part 32.

<1-3. Base part>
The base portion 31 is located on the surface of the solar cell panel 2. As shown in FIGS. 4, 5, 6 (a) and 6 (b), the base portion 31 includes a plate portion Pl 1, a hooked portion Fk 1, an engaged portion En 1, and a first contact member. J1.

The plate portion Pl1 is located on the surface of the solar cell panel 2. Here, for example, in a state before the terminal box 3 b is fixed to the solar cell panel 2, the plate portion Pl <b> 1 is a portion for being positioned on the surface of the solar cell panel 2. In the examples of FIGS. 4, 5, 6A and 6B, the plate portion Pl1 is a flat plate-like portion having a rectangular front and back surface. The plate portion Pl1 is positioned in a state of being fixed to the back surface Sf2 of the solar cell panel 2 with the adhesive Ad1 so as to cover the first hole Th0 of the back surface protection member 25 in the solar cell panel 2. For example, a silicon-based adhesive is applied to the adhesive Ad1. The plate portion Pl1 has a second hole portion Th1. The second hole portion Th1 is located in a state of penetrating the plate portion Pl1 in the thickness direction of the plate portion Pl1. The second hole Th1 is positioned so that the conductive wires W1b and W1c pass through. In the example of FIGS. 4, 6 </ b> A, and 6 </ b> B, the second hole Th <b> 1 of the plate part Pl <b> 1 is located on the first hole Th <b> 0 of the back surface protection member 25.

The covered portion Fk1 exists in a state of protruding from the first portion Pn1 of the plate portion Pl1. In the example of FIGS. 4, 6A, and 6B, the first portion Pn1 is located on the −X direction side of the plate portion Pl1. The covered portion Fk1 is located in a state of protruding from the first portion Pn1 in the direction away from the back surface Sf2 (here, the −Z direction). Further, the hook portion Fk1 has a substantially L-shaped cross section and is positioned in a state extending in the + Y direction, for example. More specifically, the hook portion Fk1 includes a portion located in a state of projecting in the −Z direction from the first portion Pn1, and a portion located in a state of projecting in the + X direction from this portion. ,have. As a result, the hooked portion Fk1 forms a groove Gr1 that is recessed in the −X direction and located in the + Y direction.

The engaged portion En1 exists in a state protruding from the second portion Pn2 of the plate portion Pl1. The second part Pn2 is located in a state of being separated from the first part Pn1. In the example of FIGS. 4, 6A, and 6B, the second portion Pn2 is located on the + X direction side of the plate portion Pl1. The engaged portion En1 is located in a state of protruding from the second portion Pn2 in a direction away from the back surface Sf2 (here, the −Z direction). A plate-like portion having a third hole H11 located in a state of penetrating in the thickness direction (here, the + X direction) is applied to the engaged portion En1. For example, a configuration having a front and back surfaces of a rectangular outer edge that is substantially parallel to the YZ plane is applied to the plate-like portion.

In the first embodiment, for example, the plate part Pl1, the hooked part Fk1, and the engaged part En1 may have an integral configuration. Resin etc. are applied to the material of these plate part Pl1, the hook part Fk1, and the to-be-engaged part En1, for example. In this case, the plate part Pl1, the hooked part Fk1, and the engaged part En1 can be manufactured by, for example, integral molding and cutting of resin. In the examples of FIGS. 4, 5, 6 (a) and 6 (b), from the viewpoint of easy manufacture of the base portion 31 and easy attachment of the main body portion 32 to be described later to the base portion 31. The plate part Pl1 has a through hole Hl2 in a portion facing the groove part Gr1 of the hooked part Fk1.

The first contact member J1 is positioned in a state where the conductive wires W1b and W1c are electrically connected. Here, for example, in a state before the terminal box 3b is fixed to the solar cell panel 2, the first contact member J1 is a portion for being electrically connected to the conducting wires W1b and W1c. For this reason, for example, after the solar cell panel 2 is manufactured, the conductive wires W1b and W1c can be connected to the first contact member J1, and the base portion 31 can be attached on the surface of the solar cell panel 2. The first contact member J1 can be made of a conductive material such as metal, for example. In the examples of FIGS. 4, 5, 6A and 6B, the first contact member J1 is fixed on the surface opposite to the back surface Sf2 (the −Z direction side) of the plate portion Pl1. It is located in the state that has been. The first contact member J1 is positioned in a state in which the conductive wires W1b and W1c are electrically connected by, for example, a method such as soldering, caulking, or sandwiching.

<1-4. Main unit>
The main body 32 is positioned on the base body 31 in a state of being attached to the base body 31. Here, for example, in a state before the main body portion 32 is attached to the base body portion 31, the main body portion 32 is a portion that can be attached to the base body portion 31. As shown in FIGS. 4, 5, 6 (a), and 6 (b), the main body portion 32 includes a covering portion Cv 2, a hook portion Fk 2, and an engaging portion En 2.

The covering portion Cv2 has an opening Op2 located on the plate portion Pl1 side of the base portion 31, and exists in a state of forming an internal space Is2 together with the plate portion Pl1. In other words, the covering part Cv2 can form the internal space Is2 together with the plate part Pl1 by positioning the opening Op2 on the plate part Pl1 side by attaching the main body part 32 to the base part 31. For example, if the internal space Is2 is a sealed space, protection of each part in the internal space Is2 can be promoted. The covering portion Cv2 includes, for example, an annular side portion Sp2 positioned so as to surround the opening Op2, and a bottom portion Bp2 positioned in a state where one end side of the side portion Sp2 is closed. It has a box-like or cup-like shape. In the examples of FIGS. 4, 5, 6A and 6B, the annular side portion Sp2 has a cylindrical shape. The bottom Bp2 closes the end of the side Sp2 on the −Z direction side.

In the internal space Is2, for example, the second contact member J2 and the diode B2 are accommodated. In the example of FIGS. 4, 6A and 6B, the second contact member J2 and the diode B2 are positioned in a fixed state on the surface of the bottom Bp2 on the base portion 31 side. . For example, the second contact member J2 is positioned in a state of being electrically connected to the diode B2. In the example of FIG. 5, the second contact member J2 and the diode B2 are positioned in a state where they are electrically connected by the wiring Ln2. The second contact member J2 is made of a conductive material such as metal, for example, like the first contact member J1. Further, in the internal space Is2, the second contact member J2 is in contact with the first contact member J1. Thereby, the 1st contact member J1 and the 2nd contact member J2 are located in the state connected electrically. In the example of FIG. 5, the first contact member J1 is positioned in a state of protruding toward the main body portion 32 side. The second contact member J <b> 2 is positioned in a state of protruding toward the base portion 31 side and recessed in a direction away from the base portion 31. Specifically, the second contact member J2 is a U-shaped portion that protrudes toward the base portion 31 and is open in the base portion 31 side. For example, the first contact member J1 and the second contact member J2 can be connected by inserting the first contact member J1 into the gap of the recessed portion of the second contact member J2.

The diode B2 is a so-called bypass diode. For example, in one of the set of solar cell groups Sg1, Sg2 in a state of being connected in series and the set of solar cell groups Sg3, Sg4 in a state of being connected in series, a decrease in the amount of received light The internal resistance may increase due to the above. In such a case, in order to avoid the heat generation of the solar battery cell CE2, the diode B2 can pass a current so as to avoid a group of solar battery cells having a high internal resistance.

The hanging portion Fk2 exists in a state of protruding from the third portion Pn3 of the annular side portion Sp2. The hook portion Fk2 is positioned in a state of being hooked on the hook portion Fk1 of the base portion 31 in a state of being rotatable around a virtual rotation axis Ax1. The virtual rotation axis Ax1 here is generated at the contact portion between the hook portion Fk2 and the hook portion Fk1. From another viewpoint, when the main body portion 32 is mounted on the base body portion 31, the hook portion Fk2 is virtually attached to the hook portion Fk1 while being hooked on the hook portion Fk1. It will be in the state which can be rotated centering on the rotation axis Ax1. For example, as shown in FIG. 6 (a), the body portion 32 is centered on a virtual rotation axis Ax1 near the tip of the hook portion Fk2 in a state where the hook portion Fk2 is inserted into the groove portion Gr1 of the hook portion Fk1. Can be rotated with respect to the base portion 31.

The engaging portion En2 exists in a state of protruding from the fourth portion Pn4 of the annular side portion Sp2. The fourth portion Pn4 is located in a region away from the third portion Pn3 in the side portion Sp2. Specifically, for example, the third portion Pn3 and the fourth portion Pn4 are located in a state in which the third portion Pn3 and the fourth portion Pn4 are separated in the direction perpendicular to the virtual rotation axis Ax1 and along the back surface Sf2. In the example of FIGS. 4, 5, 6 (a), and 6 (b), the hook portion Fk 2 and the engaging portion En 2 are located on the opposite sides of the main body portion 32. In other words, when the main body portion 32 is seen through, the hook portion Fk2 and the engaging portion En2 are located on the opposite side across the internal space Is2. Then, the hook portion Fk2 is located in a state of protruding from the third portion Pn3 in the −X direction, and the engaging portion En2 is protruded from the fourth portion Pn4 in the + X direction.

The engaging portion En2 is positioned in a state of being engaged with the engaged portion En1 of the base portion 31. If it says from another viewpoint, when the main-body part 32 is mounted | worn with respect to the base | substrate part 31, the engaging part En2 can be engaged with the to-be-engaged part En1. Then, for example, as shown in FIG. 6A, the main body portion 32 is moved with respect to the base portion 31 with the virtual rotation axis Ax1 as the center with the hook portion Fk2 inserted into the groove portion Gr1 of the hook portion Fk1. Rotate. Thereby, for example, as shown in FIG. 6B, the engaging portion En2 can be engaged with the engaged portion En1. Specifically, in the example of FIG. 6B, the engaging portion En2 engages with the engaged portion En1 when the engaging portion En2 enters the third hole H11 of the engaged portion En1. .

In the first embodiment, for example, the covering portion Cv2, the hook portion Fk2, and the engaging portion En2 may have an integral configuration. For example, a resin or the like is applied to the material of the covering portion Cv2, the hook portion Fk2, and the engaging portion En2. In this case, the covering portion Cv2, the hooking portion Fk2, and the engaging portion En2 can be manufactured by, for example, integral molding and cutting of resin.

If the said structure is employ | adopted, for example, after manufacturing the solar cell panel 2, attaching the base | substrate part 31 on the surface of the solar cell panel 2, and attaching the main-body part 32 to this base | substrate part 31, the terminal box 3b will be attached. Can be completed. At this time, for example, the main body part 32 is rotated with respect to the base body part 31 about the virtual rotation axis Ax1 in a state where the hook part Fk1 of the base body part 31 is hung on the hook part Fk2 of the main body part 32. Thereby, the engaging part En2 of the main body part 32 can be engaged with the engaged part En1 of the base part 31. For this reason, for example, the main body 32 can be easily attached to the base body 31. Therefore, for example, the terminal box 3 b can be easily attached to the solar cell panel 2.

Here, for example, if the engaging portion En2 is detachably engaged with the engaged portion En1, the engagement between the engaged portion En1 and the engaging portion En2 is canceled, and the virtual The main body part 32 can be easily detached from the base body part 31 by rotating the main body part 32 about a typical rotation axis Ax1. And the main-body part 32 of the terminal box 3b can be replaced | exchanged easily by attaching another main-body part 32 to the base | substrate part 31. FIG. Thereby, the reproduction | regeneration and lifetime extension of the solar cell module 1 and the terminal box 3b for solar cell modules can be achieved easily.

Also, here, for example, when the main body portion 32 is attached to the base portion 31, the first contact member J1 and the second contact member J2 so that the second contact member J2 is connected to the first contact member J1. Can be easily attached to the solar battery panel 2.

<1-5. Packing part>
The packing part Pk1 is located so as to close the gap between the base part 31 and the main body part 32. This packing part Pk1 is located in the state which has produced the elastic deformation in the compression direction between the base | substrate part 31 and the main-body part 32. FIG. The packing part Pk1 is located so as to surround the opening Op2. From another viewpoint, for example, when the terminal box 3b is seen through the plane toward the back surface Sf2 of the solar cell panel 2, the packing portion Pk1 is positioned so as to surround the second hole Th1. As the material of the packing part Pk1, for example, a material that can be elastically deformed like rubber such as butyl rubber and has excellent weather resistance is adopted. If such a configuration is adopted, for example, it becomes difficult for moisture to enter the terminal box 3 b from the gap between the base portion 31 and the main body portion 32. That is, for example, the waterproofness of the terminal box 3b can be improved. As a result, for example, the deterioration of each part in the state accommodated in the internal space Is2 of the terminal box 3 can be reduced. Moreover, for example, moisture can be prevented from entering the solar cell panel 2 from the outside via the terminal box 3b.

6A and 6B, for example, when the main body portion 32 is attached to the base portion 31, the hook portion Fk2 of the main body portion 32 is replaced with the hook portion Fk1 of the base portion 31. The main body 32 is rotated in a state where it is hung. At this time, the packing part Pk1 is compressed by the moment generated by the rotation of the main body part 32. Thereby, for example, the terminal box 3b can be attached to the solar cell panel 2 more easily than a mode in which the main body 32 is attached to the base 31 in a horizontal state. Furthermore, at this time, for example, the attachment position of the main body 32 with respect to the base body 31 is not easily displaced. For this reason, the packing part Pk1 can be easily adhered to the base part 31 and the main body part 32. Therefore, for example, the main body 32 is firmly attached to the base body 31, and the waterproofness of the terminal box 3b can be improved.

4, 5, 6 (a), and 6 (b), the packing portion Pk 1 is located on the surface of the plate portion Pl 1 of the base portion 31 on the body portion 32 side. And the edge part by the side of the base | substrate part 31 of the side part Sp2 of the main-body part 32 exists in the state which is pressing the packing part Pk1.

<1-6. Summary of First Embodiment>
In the solar cell module 1 and the terminal boxes 3b and 3c according to the first embodiment, for example, after the solar cell panel 2 is manufactured, the base portion 31 is attached on the back surface Sf2 of the solar cell panel 2. For example, the main body part 32 can be easily attached to the base body part 31 by rotating the main body part 32 in a state where the hanging part Fk2 of the main body part 32 is hung on the hooked part Fk1 of the base body part 31. Thereby, the terminal boxes 3b and 3c can be easily attached to the solar cell panel 2, for example. Further, for example, if the engaging portion En2 is detachably engaged with the engaged portion En1, the engagement between the engaged portion En1 and the engaging portion En2 is released, and the main body 32 is rotated. By doing so, the main body 32 can be easily detached from the base body 31. And the main-body part 32 of the terminal box 3b can be replaced | exchanged easily by attaching another main-body part 32 to the base | substrate part 31. FIG. Thereby, for example, the life of the solar cell module 1 and the terminal boxes 3b and 3c for the solar cell module 1 can be easily extended.

<2. Other embodiments>
The present disclosure is not limited to the first embodiment described above, and various modifications and improvements can be made without departing from the scope of the present disclosure.

<2-1. Second Embodiment>
In the first embodiment, for example, the hook portion Fk2 and the engaging portion En2 do not have to be positioned on the opposite sides of the main body portion 32. For example, as shown in FIG. 7, with the terminal box 3b as a basic configuration, a base portion 31A having a hooked portion Fk1A and an engaged portion En1A, and a main body portion 32A having a hooked portion Fk2A and an engaging portion En2A , The terminal box 3bA may be changed.

Here, for example, the base portion 31A has the base portion 31 as a basic configuration, and has two hooked portions Fk1A that are located apart on the + Y direction side and the −Y direction side instead of the hooked portion Fk1. You may do it. Further, for example, the base portion 31A has the base portion 31 as a basic configuration, and has an engaged portion En1A located at two locations on the + Y direction side and the −Y direction side instead of the engaged portion En1. May be. Each covered portion Fk1A has a substantially L-shaped cross section and is positioned in the + Y direction, like the covered portion Fk1. A plate-like portion having a third hole H11A penetrating in the thickness direction (here, the + Y direction) is applied to each engaged portion En1A. For example, a configuration having front and back surfaces substantially parallel to the XZ plane and having a rectangular outer edge is applied to the plate-like portion.

For example, the main body portion 32A has the main body portion 32 as a basic configuration, and instead of the hook portion Fk2, in the + Y direction side portion and the −Y direction side portion of the side portion Sp2 of the covering portion Cv2, You may have two hook part Fk2A located in the state which protruded from the part of the edge part vicinity of a X direction. Further, for example, the main body 32A has the main body 32 as a basic configuration, and instead of the engaging portion En2, a portion on the + Y direction side and a portion on the −Y direction side of the side portion Sp2 of the covering portion Cv2 It may have two engaging parts En2A located in the state which protrudes in each.

<2-2. Third Embodiment>
In each of the above embodiments, for example, as shown in FIG. 8A and FIG. 8B, the base portion 31B including the annular fitting portion Re1B, with the terminal boxes 3b and 3bA as a basic configuration, The terminal box 3bB may include a main body 32B including an annular fitting part Pr2B. The covered portion Fk1B can be regarded as being in a state of protruding from the first portion Pn1 of the plate portion Pl1 when viewed from the groove portion Gr1B.

Here, the base portion 31B further includes, for example, an annular fitted portion Re1B located on the main body portion 32B side of the plate portion Pl1 with the base portion 31 as a basic configuration. For example, when the terminal box 3bB is seen through the terminal box 3bB in a plan view toward the back surface Sf2 of the solar cell panel 2, the annular fitted portion Re1B is positioned so as to surround the second hole portion Th1. Further, in the example of FIGS. 8A and 8B, the base portion 31B is a groove Gr1B that is positioned in a state of being recessed in the + X direction and extending in the + Y direction, instead of the hooked portion Fk1. The cover part Fk1B in the state which forms is included.

The main body part 32B further includes, for example, an annular fitting part Pr2B located on the base part 31B side, with the main body part 32 as a basic configuration. The annular fitting part Pr2B is located so as to surround the opening Op2, for example. And the annular fitting part Pr2B is located in the state fitted to the to-be-fitted part Re1B, for example. In the example of FIGS. 8A and 8B, the main body portion 32B includes a hook-shaped hook portion Fk2B that hooks on the hook portion Fk1B instead of the hook portion Fk2.

Further, here, the combination of the annular fitting portion Re1B and the annular fitting portion Pr2B includes, for example, an annular concave portion (also referred to as an annular concave portion) and an annular convex portion (annular convex portion) that are fitted to each other. The combination with the above is also applied. In the examples of FIGS. 8A and 8B, the annular fitted portion Re1B is an annular concave portion, and the annular fitting portion Pr2B is an annular convex portion. At this time, the annular fitted portion Re1B as the annular recess is recessed toward the solar cell panel 2 side on the surface of the main body portion 32B side of the plate portion Pl1, and extends annularly along the XY plane. It is the part that is located at. The annular fitting part Pr2B as the annular convex part is located in a state of projecting from the end face on the base part 31 side of the side part Sp2 toward the solar cell panel 2 side and extending annularly along the XY plane. ing. And the packing part Pk1B located in the to-be-fitted part Re1B as an annular recessed part is employ | adopted instead of the packing part Pk1.

In the above configuration, for example, the body portion 32B is rotated with respect to the base portion 31B in a state where the hook portion Fk1B is hooked with the hook portion Fk1B, and the fitting portion Pr2B which is an annular convex portion is a fitting portion which is an annular concave portion. If fitted in Re1B, the engaging portion En2 can be engaged with the engaged portion En1. Thereby, for example, the main body 32B can be easily attached to the correct position of the base body 31B. As a result, for example, waterproofness in the terminal box 3bB can be easily increased.

<2-3. Fourth Embodiment>
In the third embodiment, for example, as shown in FIGS. 9A and 9B, a terminal box 3bC in which the annular protrusion and the annular recess are replaced with the terminal box 3bB as a basic configuration is provided. It may be adopted.

Here, the base portion 31C is, for example, an annular protrusion located in a state of protruding toward the main body portion 32C instead of the annular fitting portion Re1B as an annular recess, with the base portion 31B as a basic configuration. An annular fitted part Pr1C as a part is included. For example, when the terminal box 3bC is seen through the plane of the terminal box 3bC toward the back surface Sf2 of the solar cell panel 2, the annular mated portion Pr1C is positioned so as to surround the second hole Th1. In the example of FIG. 9A and FIG. 9B, the annular fitted portion Pr1C as the annular convex portion is directed away from the solar cell panel 2 from the surface of the plate portion Pl1 on the main body portion 32C side. Projecting and extending in an annular shape along the XY plane.

The main body 32C has, for example, the above-described main body 32B as a basic configuration, instead of the annular fitting portion Pr2B as an annular convex portion, and an annular concave portion that is recessed in a direction away from the base portion 31C. Includes a fitting portion Re2C. The annular fitting portion Re2C is located so as to surround the opening Op2, for example. And the annular fitting part Re2C is located in the state fitted to the to-be-fitted part Pr1C, for example. In the example of FIG. 9A and FIG. 9B, the annular fitting portion Re2C as the annular recess is, for example, directed toward the direction in which the end surface on the base portion 31C side of the side portion Sp2 moves away from the solar cell panel 2. It is recessed and located in a state extending annularly along the XY plane. And packing part Pk2C is located in fitting part Re2C as an annular recessed part.

Also here, for example, the body portion 32C is rotated with respect to the base portion 31C in a state where the hook portion Fk1B is hooked with the hook portion Fk1B, and the fitted portion that is an annular convex portion in the fitting portion Re2C that is an annular concave portion. When Pr1C is fitted, the engaging portion En2 can be engaged with the engaged portion En1. For this reason, for example, the main body 32C can be easily attached to the correct position of the base 31C. As a result, for example, the waterproofness of the terminal box 3bC can be easily increased.

Here, for example, if the engaging portion En2 is detachably engaged with the engaged portion En1, the main body portion 32C can be replaced with the base portion 31C. For example, by replacing the main body portion 32C, the packing portion Pk2C located in the fitting portion Re2C as the annular concave portion of the main body portion 32C can also be replaced. Thereby, the complicated operation | work which takes out the packing part Pk2C deteriorated by the long-term use of the solar cell module 1 from an annular recessed part is reduced. Therefore, for example, the packing part Pk2C can be easily replaced by replacing the main body part 32C.

<2-4. Fifth Embodiment>
In each of the above embodiments, for example, as shown in FIG. 10, instead of the above four terminal boxes 3a, 3b (3bA, 3bB, 3bC), 3c, 3d, the solar cell module 1 is a basic configuration. The solar cell module 1D including the terminal box 3D may be changed. This terminal box 3D has the functions of four terminal boxes 3a, 3b (3bA, 3bB, 3bC), 3c, 3d. And as FIG. 10 shows, solar cell module 1D is equipped with conducting wire W1D, W2D, W3D instead of conducting wire W1a, W1b, W1c, W1d, W1e, W1f.

In the example of FIG. 10, the first conductive wire W1D is positioned in a state where it is electrically connected to the solar cell group Sg1. In the state where the second conductor W2D is electrically connected to the two solar cell groups Sg2 and Sg3, and the third conductor W3D is electrically connected to the solar cell group Sg4. positioned. Further, for example, an insulator such as PET is sandwiched between the intersections of the conductive wires W1D and W3D and the connection conductor T1. Thereby, between the conducting wire W1D and W3D and the connection conductor T1 is insulated. The three conducting wires W1D, W2D, and W3D may be positioned in a state where they are inserted through different first hole portions Th0. Further, two or more of the three conductive wires W1D, W2D, and W3D may be positioned in a state of being inserted through one first hole Th0. Each first hole Th0 is sealed with a sealing material such as a butyl resin or a polyisopropylene resin in a state where the conductive wires W1D, W2D, and W3D are inserted. Here, for example, an insulating sheet I1D may be positioned between the conductive wires W1D, W2D, W3D and the photoelectric conversion unit 23.

The terminal box 3D is positioned in a fixed state on the front surface (here, the back surface Sf2) of the solar cell panel 2, as shown in FIG. The terminal box 3D can be fixed to the back surface Sf2 by adhesion using, for example, a silicon-based adhesive. As shown in FIG. 10, the terminal box 3 </ b> D is positioned in a state where an output cable C <b> 1 for outputting electricity generated in the photoelectric conversion unit 23 is electrically connected. In the example of FIG. 10, the output cables C1a, C1b and the conductive wires W1D, W2D, W3D are positioned in the terminal box 3D in an electrically connected state.

For example, as shown in FIG. 11 to FIG. 14B, the terminal box 3 </ b> D has a base portion 31 </ b> D instead of the base portion 31, with the terminal box 3 b as a basic configuration, instead of the main body portion 32. The main body 32D is provided. The terminal box 3D has a packing part Pk2C located between the base part 31D and the main body part 32D.

The base portion 31D includes the base portion 31 as a basic configuration, includes an engaged portion En1D instead of the engaged portion En1, includes three first contact members J1D instead of the two first contact members J1, An annular mated portion Pr1C is included. The conductors W1D, W2D, and W3D are positioned so as to pass through the second hole Th1 of the base portion 31D.

In the example of FIGS. 11 to 14B, the first portion Pn1 in the state in which the hooked portion Fk1 of the plate portion Pl1 protrudes is located on the + X direction side of the plate portion Pl1. . The hook portion Fk1 has a substantially L-shaped cross section and is positioned in a state extending in the + Y direction, for example. More specifically, the hook portion Fk1 has a portion that protrudes in the −Z direction from the first portion Pn1, and a portion that protrudes in the −X direction from this portion. Yes. As a result, the hook portion Fk1 is in a state of forming a groove portion Gr1 that is recessed in the + X direction and positioned in the + Y direction.

The engaged portion En1D exists in a state of projecting from the second portion Pn2 of the plate portion Pl1, similarly to the engaged portion En1. The second part Pn2 is located in a state of being separated from the first part Pn1. In the example of FIGS. 11 to 14B, the second portion Pn2 is located on the −X direction side of the plate portion Pl1. Similarly to the engaged portion En1, the engaged portion En1D is located in a state of protruding from the second portion Pn2 in a direction away from the back surface Sf2 (here, the −Z direction). The engaged portion En1D has a hook-shaped portion at the tip in the −Z direction.

Further, in the example of FIGS. 11 to 14B, the annular fitted portion Pr1C is an annular convex portion.

In the fifth embodiment, for example, the plate part Pl1, the hooked part Fk1, and the engaged part En1D may have an integral configuration. For example, resin or the like is applied to the material of the plate part Pl1, the hooked part Fk1, and the engaged part En1D. In this case, the plate part Pl1, the hooked part Fk1, and the engaged part En1D can be manufactured by, for example, integral molding and cutting of resin.

The three first contact members J1D include, for example, a first first contact member J11D, a second first contact member J12D, and a third first contact member J13D. In the example of FIG. 12A and FIG. 13, the first first contact member J11D, the second first contact member J12D, and the third first contact member J13D are arranged in the + Y direction in this order. It is located in a row facing toward you. The first first contact member J11D is positioned in a state where the conducting wire W1D is electrically connected. The second first contact member J12D is positioned in a state where the conductive wire W2D is electrically connected. The third first contact member J13D is positioned in a state where the conductive wire W3D is electrically connected. Here, for example, after the solar cell panel 2 is manufactured, the conductor W1D is connected to the first first contact member J11D, the conductor W2D is connected to the second first contact member J12D, and the third first contact is made. The base member 31D can be mounted on the surface of the solar cell panel 2 by connecting the conductor W3D to the member J13D. The first contact member J1D is made of a conductor such as metal, for example. In the example of FIGS. 11 to 14B, each first contact member J1D is fixed on the surface opposite to the back surface Sf2 of the plate portion Pl1 (on the −Z direction side). The first contact member J1D is positioned in a state where the conductive wires W1D, W2D, and W3D are electrically connected by a method such as soldering, caulking, or sandwiching.

The main body portion 32D includes the main body portion 32 as a basic configuration, includes an engagement portion En2D instead of the engagement portion En2, includes three second contact members J2D instead of the two second contact members J2, and includes a diode B2. Instead of two diodes B2D, and further includes three connecting portions C1D and an annular fitting portion Re2C.

11 to 14B, the engagement portion En2D has a plate-like flexible portion F11D and an engagement portion F12D. The plate-like flexible part F11D is located in a state where it is connected by the connecting part Pc2D to the side part Sp2 on the −X direction side of the covering part Cv2. This plate-like flexible part F11D is located in a state of extending toward the base part 31D along the side part Sp2 of the covering part Cv2. The plate-like flexible portion F11D is a plate-like portion having flexibility. The engaging portion F12D is positioned in a state of being engaged with the engaged portion En1D on the base portion 31D side of the plate-like flexible portion F11D. Thus, for example, when the plate-like flexible portion F11D that causes bending is applied to the engaging portion En2D on the main body portion 32D side in the portion where the base portion 31D and the main body portion 32D engage with each other, the engaged portion En1D does not require flexibility. For this reason, for example, the engaged portion En1D of the base portion 31D that is difficult to replace is less likely to deteriorate. As a result, for example, even if the elasticity of the plate-like flexible portion F11D of the main body portion 32D deteriorates due to long-term use of the terminal box 3D, the main body portion 32D can be easily replaced. Thereby, reproduction | regeneration of the solar cell module 1 and terminal box 3D for solar cell modules 1 and lifetime extension can be achieved easily.

The three second contact members J2D include, for example, a first second contact member J21D, a second second contact member J22D, and a third third contact member J23D. In the example of FIG. 12B, the first second contact member J21D, the second second contact member J22D, and the third third contact member J23D are arranged in a row in the + Y direction in this order. It is located in a state of being in love. The two diodes B2D include, for example, a first diode B21D and a second diode B22D. In the example of FIG. 12B, the first diode B21D and the second diode B22D are positioned in a state in which they are aligned in the + Y direction in this order. The three connection parts C1D include a first connection part C11D, a second connection part C12D, and a third connection part C13D. In the example of FIG. 12B, the first connection portion C11D, the second connection portion C12D, and the third connection portion C13D are positioned in a state in which they are aligned in the + Y direction in this order. . A conductive material is applied to the material of each connection portion C1D. Each connection part C1D should just be a plate-shaped member, for example.

In the example of FIG. 12B, the first connection portion C11D, the second connection portion C12D, and the third connection portion C13D are fixed on the surface of the bottom portion Bp2 on the base portion 31D side. The first connecting portion C11D is located in a state where the first second contact member J21D is connected and is located in a state where the cable C1a is connected. The second connecting portion C12D is positioned in a state where the second second contact member J22D is connected. The third connecting portion C13D is located in a state where the third second contact member J23D is connected and is located in a state where the cable C1b is connected. A portion of the terminal box 3D in which the cables C1a and C1b are penetrating may be sealed with, for example, a packing member. Further, the first connection portion C11D and the second connection portion C12D are located in a state where they are connected via the first diode B21D. The second connecting portion C12D and the third connecting portion C13D are located in a state where they are connected via the second diode B22D.

Here, as shown in FIG. 14A and FIG. 14B, in a state where the hook portion Fk2 is inserted into the groove portion Gr1 of the hook portion Fk1, a virtual rotation axis Ax1 near the tip of the hook portion Fk2. The main body portion 32D is rotated with respect to the base portion 31D. Thereby, for example, as shown in FIG. 14B, the engaging portion En2D can be engaged with the engaged portion En1D. Specifically, in the example of FIG. 14B, the engaging portion En2D is engaged with the engaged portion En1D by the hook portion of the engaging portion En2D being hooked on the flange portion of the engaged portion En1D. Thereby, the terminal box 3D is completed.

In the terminal box 3D, for example, in a portion where the first contact member J1D and the second contact member J2D are in contact, at least one of the first contact member J1D and the second contact member J2D is elastically deformed. It exists in the state which has produced. Specifically, for example, in the portion where the X-th (X is an integer of 1, 2, 3) first contact member J1XD and the X-th second contact member J2XD are in contact with each other, At least one of the first contact member J1XD and the Xth second contact member J2XD exists in a state where elastic deformation occurs.

If the above configuration is adopted, for example, when the main body portion 32D is rotated with respect to the base portion 31D around the virtual rotation axis Ax1, the first contact member J1D and the second contact member J2D come into contact with each other. In addition, the force by which the second contact member J2D is pressed against the first contact member J1D is a moment. At this time, for example, by pressing a position away from the virtual rotation axis Ax1 with respect to the contact portion between the first contact member J1D and the second contact member J2D in the main body portion 32D, the operator can operate according to the principle of lever. Can press the second contact member J2D against the first contact member J1D with a large force with a small force. Here, for example, in the main body portion 32D, a position that is two times or more away from the virtual rotation axis Ax1 than the contact point between the first contact member J1D and the second contact member J2D may be pushed. Thereby, for example, a conductor having a low electrical resistance and a large thickness can be applied to the first contact member J1D and the second contact member J2D. Further, for example, when the second contact member J2D is pressed against the first contact member J1D with a large force, the contact failure between the first contact member J1D and the second contact member J2D is unlikely to occur and is caused by the contact failure. Arcs are also unlikely to occur. At this time, for example, when at least one of the first contact member J1D and the second contact member J2D is deformed including elastic deformation, the first contact member J1D and the second contact member J2D are in contact with each other in a wider area. Can do. Thereby, for example, the contact resistance between the first contact member J1D and the second contact member J2D decreases. As a result, the power generation efficiency in the solar cell module 1 can be improved.

Here, for example, the amount of elastic deformation of the first contact member J1D along the direction in which the second contact member J2D pushes the first contact member J1D is defined as the first elastic deformation amount. As the first elastic deformation amount, for example, a displacement amount generated in a portion of the first contact member J1D that is in contact with the second contact member J2D is employed. The amount of elastic deformation of the second contact member J2D along the direction in which the first contact member J1D pushes the second contact member J2D is defined as the second elastic deformation amount. As the second elastic deformation amount, for example, a displacement amount generated in a portion of the second contact member J2D that is in contact with the first contact member J1D is employed. Here, for example, if the second elastic deformation amount is larger than the first elastic deformation amount, the first contact member J1D on the base portion 31D side that is difficult to replace due to long-term use of the solar cell module 1 is more suitable. The elastic deterioration is less likely to occur than the second contact member J2D on the main body part 32D side, which is easy to replace. Therefore, for example, the solar cell module 1D and the terminal box 3D for the solar cell module 1D can be easily regenerated and extended in life by detaching and replacing the main body portion 32D with respect to the base portion 31D.

From another viewpoint, here, for example, the spring constant of the first contact member J1D in the base portion 31D along the direction in which the second contact member J2D pushes the first contact member J1D is defined as the first spring constant. The first spring constant here is the spring constant of the first contact member J1D in a state of being fixed to the base portion 31D. For example, when the first contact member J1D is positioned along the plate part Pl1 of the base part 31D, the first contact member J1D is supported and reinforced by the plate part Pl1 from the solar cell panel 2 side. . At this time, even if the first contact member J1D is pushed toward the solar cell panel 2 by the second contact member J2D, the first contact member J1D is hardly elastically deformed. Therefore, at this time, the spring constant of the first contact member J1D is a value that also takes into account the reinforcement by the plate portion Pl1.

Here, for example, the spring constant of the second contact member J2D in the main body portion 32D along the direction in which the first contact member J1D pushes the second contact member J2D is defined as the second spring constant. The second spring constant here is a spring constant of the second contact member J2D in a state of being fixed to the main body portion 32D. For example, when the second contact member J2D is positioned along the bottom Bp2 of the main body 32D, the second contact member J2D is supported and reinforced by the bottom Bp2. At this time, even if the second contact member J2D is pushed by the first contact member J2D toward the bottom Bp2 side, the second contact member J2D is hardly elastically deformed. Therefore, at this time, the spring constant of the second contact member J2D is set to a value in consideration of reinforcement by the bottom portion Bp2.

And, for example, if the second spring constant is smaller than the first spring constant, the first contact member J1D on the base portion 31D side that is difficult to replace due to long-term use of the solar cell module 1 is replaced. The deterioration of elasticity is less likely to occur than the second contact member J2D on the main body portion 32D side. Therefore, for example, the solar cell module 1D and the terminal box 3D for the solar cell module 1D can be easily regenerated and extended in life by detaching and replacing the main body portion 32D with respect to the base portion 31D.

By the way, for example, the materials of the first contact member J1D and the second contact member J2D include, for example, phosphor bronze, brass, copper alloys such as copper-nickel-silicon alloys, silver alloys, aluminum alloys, silver alloys or An aluminum alloy that has been subjected to solder plating, silver plating or gold plating is used. In addition, for example, the first contact member J1D may have a rounded contact surface that comes into contact with the second contact member J2D. At this time, for example, the second contact member J2D may have a planar contact surface that contacts the first contact member J1D. For example, the second contact member J2D may have a rounded contact surface that comes into contact with the first contact member J1D. At this time, for example, the first contact member J1D may have a planar contact surface that contacts the second contact member J2D. If these contact surfaces are employed, the first contact member J1D and the second contact member J2D can easily come into contact with each other, and the contact resistance between the first contact member J1D and the second contact member J2D can be reduced.

Here, for example, it is assumed that the first contact member J1D and the second contact member J2D have the same material and the same shape. In this case, for example, if the first contact member J1D is supported from the side opposite to the position of the second contact member J2D by the plate portion Pl1 of the base portion 31D, the second spring constant is smaller than the first spring constant. Become.

Further, here, for example, a case is assumed where both the first contact member J1D and the second contact member J2D have a shape like a cantilever. In this case, the cantilever deflection δ is expressed by the following equation (1), and the spring constant K is expressed by the following equation (2).

δ = PL ³ / (3EI) (1)
K = (3EI) / L ³ (2).

Here, the action / reaction force when the first contact member J1D and the second contact member J2D contact each other is indicated by P, the Young's modulus is indicated by E, and the cross-sectional secondary moment is indicated by I. The distance from the fulcrum of the cantilever to the point of action is indicated by L. Regarding the distance L, for example, the distance of the first contact member J1D is also expressed as L1, and the distance of the second contact member J2D is also expressed as L2.

Here, as a method of making the second spring constant smaller than the first spring constant, for example, the following method 1 to method 3 can be considered.

[Method 1] By using a material harder than the second contact member J2D for the first contact member J1D, the Young's modulus E of the first contact member J1D is made larger than the Young's modulus E of the second contact member J2D. For example, a copper-nickel-silicon alloy having a Young's modulus of 131 GPa may be used as the material of the first contact member J1D, and brass having a Young's modulus of 110 GPa may be used as the material of the second contact member J2D.

[Method 2] The cross-sectional secondary moment I of the first contact member J1D is made larger than the cross-sectional secondary moment I of the second contact member J2D. Here, the cross-sectional secondary moment is expressed by the following equation (3), assuming that the cross sections of the first contact member J1D and the second contact member J2D are rectangular for convenience.

^{I = bh 3/12 ··· (} 3).

Here, the width of the cross section is indicated by b, and the height of the cross section is indicated by h. The height h of the cross section corresponds to the thickness of the first contact member J1D and the second contact member J2D. Regarding the width b of the cross section, for example, the width of the first contact member J1D is also expressed as b1, and the width of the second contact member J2D is also expressed as b2. Regarding the height h of the cross section, for example, the thickness of the first contact member J1D is also expressed as h1, and the thickness of the second contact member J2D is also expressed as h2.

Here, the width (b1) of the first contact member J1D may be larger than the width (b2) of the second contact member J2D, and the thickness (h1) of the first contact member J1D may be set to the second contact member J2D. It may be larger than the thickness (h2). Further, if the cross-sectional shape of the first contact member J1D is a shape other than a rectangle, for example, an I-type, H-type, U-type, T-type, or an annular shape, the cross-sectional secondary moment of the first contact member J1D Can increase. Here, for example, if the spring constant of the second contact member J2D is reduced by reducing the thickness (h2) of the second contact member J2D on the main body portion 32D side, the replacement on the main body portion 32D side is easy. The amount of material used can be reduced.

[Method 3] The distance (L1) of the first contact member J1D is made shorter than the distance (L2) of the second contact member J2D.

<2-5. Sixth Embodiment>
In each of the above embodiments, for example, as shown in FIG. 15, the engaged portion En1D and the engaged portion En2D are engaged with another configuration such as a hinge using the terminal box 3D as a basic configuration. A terminal box 3E replaced with the joint portion En1E and the engaging portion En2E may be employed. In the example of FIG. 15, a main body 32E having an engaging portion En2E instead of the engaging portion En2D is employed with the main body 32D as a basic configuration. The engaging portion En2E is in a state of being connected to the portion of the side portion Sp2 on the −X direction side of the covering portion Cv2 by the connecting portion Pc2E. The engaging portion En2E is a plate-like portion having a fourth hole H13E that penetrates in the thickness direction and is rotatable about the rotation axis Ax2E. Further, in the example of FIG. 15, the base portion 31D is a basic configuration, and the engaged portion having an L-shape that engages with the fourth hole Hl3E of the engaging portion En2E instead of the engaged portion En1D. A base portion 31E having En1E is employed.

<2-6. Seventh Embodiment>
In each of the above embodiments, for example, the direction in which the first contact members J1, J1D and the second contact members J2, J2D are pressed may be changed. In the example of FIGS. 16A and 16B, the terminal box 3D has a basic configuration. The base portion 31D is changed to the base portion 31F including the first contact member J1F instead of the first contact member J1D, and the main body portion 32D includes the second contact member J2F instead of the second contact member J2D. The terminal box 3F changed to the part 32F is employed.

Here, as shown in FIGS. 16A and 16B, in a state where the hook portion Fk2 is inserted into the groove portion Gr1 of the hook portion Fk1, a virtual rotation axis Ax1 in the vicinity of the tip of the hook portion Fk2. The main body 32F is rotated with respect to the base 31F. At this time, the first contact member J1F located in a state of projecting toward the main body portion 32F side on the main body portion 32F side of the plate portion Pl1, and toward the base body portion 31F side on the base body portion 31F side of the bottom portion Bp2. The second contact member J2F located in a protruding state is pressed against each other. Thereby, in the part which the 1st contact member J1F and the 2nd contact member J2F are contacting, at least one member of the 1st contact member J1F and the 2nd contact member J2F produces elastic deformation so that it may fall. . For example, if the engaging portion En2D is engaged with the engaged portion En1D, the terminal box 3F can be completed.

<3. Other>
In each of the above-described embodiments, for example, at the place where the base portions 31, 31A, 31B, 31C, 31D, 31E, 31F and the main body portions 32, 32A, 32B, 32C, 32D, 32E, 32F are in contact, If at least one surface of 31, 31A, 31B, 31C, 31D, 31E, 31F and the main body portions 32, 32A, 32B, 32C, 32D, 32E, 32F has elasticity, separate packing portions Pk1, Pk1B and Pk2C may be omitted. Further, as the material of the packing parts Pk1, Pk1B, Pk2C, for example, a metal or the like may be employed. Further, if the main body portions 32, 32A, 32B, 32C, 32D, 32E, and 32F are not detached from the base portions 31, 31A, 31B, 31C, 31D, 31E, and 31F, for example, the packing portions Pk1, Pk1B, and Pk2C are used. Instead of this, a thermosetting or photocurable adhesive may be employed. In other words, for example, there is a portion having a function of stopping water in a gap between the base portion 31, 31A, 31B, 31C, 31D, 31E, 31F and the main body portion 32, 32A, 32B, 32C, 32D, 32E, 32F. It only has to exist. Further, in the engaged portion En1 of the base portion 31, a protrusion that protrudes in the direction toward the main body portion 32 is located instead of the third hole portions H11 and H11A, and the main body portions 32, 32A, and 32B are located. , 32C, a recess that can accommodate the above-described protrusions instead of the engaging portions En2 and En2A may be positioned as the engaging portion. That is, it is only necessary that the engaging portion exists in the fourth portion Pn4.

It goes without saying that all or a part of each of the above embodiments and various modifications can be appropriately combined within a consistent range.

1, 1D Solar cell module 2 Solar cell panel 3, 3D, 3E, 3F, 3a, 3b, 3bA, 3bB, 3bC, 3c, 3d Terminal box 31, 31A, 31B, 31C, 31D, 31E, 31F Base part 32, 32A, 32B, 32C, 32D, 32E, 32F Body part Ax1, Ax2E Rotating shaft B2, B2D, B21D, B22D Diode CE2 Solar cell Cv2 Covering part En1, En1A, En1D, En1E Engaged part En2, En2A, En2D En2E Engagement part F11D Plate-like flexible part F12D Engagement part Fk1, Fk1A, Fk1B Engagement part Fk2, Fk2A, Fk2B Engagement part Gr1, Gr1B Groove part Hl1, Hl1A 3rd hole part Hl2 Through hole Hl3E 4th hole part Space J1, J1D, J11D, J12D , J13D, J1XD, J1F First contact member J2, J2D, J21D, J22D, J23D, J2XD, J2F Second contact member Op2 Opening Pk1, Pk1B, Pk2C Packing part Pl1 Plate part Pn1 First part Pn2 Second part Pn3 Third Part Pn4 Fourth part Pr1C, Re1B Fit part Pr2B, Re2C Fitting part Sf2 Back side Sp2 Side part Th0 First hole part Th1 Second hole part W1a, W1b, W1c, W1d, W1e, W1f, W1D, W2D, W3D Conductor

Claims (10)

1. A solar panel,
   A terminal box located on the surface of the solar panel,
   The terminal box is
   A base portion located on the surface;
   A main body portion positioned in a state attached to the base body portion,
   The base portion is
   A plate portion having a hole portion located on the surface and positioned so that a conductor existing from the inside of the solar cell panel to the region on the surface passes through;
   A hooked portion that exists in a state of protruding from the first portion of the plate portion;
   An engaged portion that exists in a state of protruding from a second portion of the plate portion away from the first portion,
   The main body is
   A covering portion having an opening located on the plate portion side and existing in a state of forming an internal space together with the plate portion;
   It exists in the state which protrudes from the 3rd part of the cyclic | annular side part located in the state surrounding the said opening of the said coating | coated part, centering on a virtual rotating shaft with respect to the said covering part A hanging part that is positioned in a state of being able to rotate,
   An engagement portion that is present in a fourth portion of the annular side portion that is remote from the third portion and is positioned in a state of being engaged with the engaged portion;
   The solar cell module, which is located in a state in which the third portion and the fourth portion are separated from each other in a direction perpendicular to the virtual rotation axis and along the surface.
2. The solar cell module according to claim 1,
   The terminal box further includes an elastically deformable packing portion,
   The packing portion is located in a state where elastic deformation is generated in the compression direction between the base portion and the main body portion so as to close a gap between the base portion and the main body portion,
   The said packing part is a solar cell module located so that the said opening may be enclosed.
3. The solar cell module according to claim 2, wherein
   The main body part further includes an annular fitting part located on the base part side and located so as to surround the opening,
   The base portion further includes an annular fitted portion located on the main body portion side and located in a state of being fitted to the fitting portion,
   The combination of the annular fitting portion and the annular fitted portion is a combination of an annular concave portion and an annular convex portion that are fitted to each other,
   The packing part is a solar cell module located in the annular recess.
4. The solar cell module according to claim 3, wherein
   The engaging portion is positioned in a state where it is detachably engaged with the engaged portion,
   The main body includes the annular recess,
   The solar cell module, wherein the base portion includes the annular convex portion.
5. The solar cell module according to any one of claims 1 to 4, wherein
   The base portion includes a first contact member positioned in a state of being connected to the conducting wire,
   The main body includes a second contact member positioned in a state of being pressed against the first contact member,
   In the portion where the first contact member and the second contact member are in contact, at least one of the first contact member and the second contact member exists in a deformed state. Solar cell module.
6. The solar cell module according to claim 5, wherein
   The main body is located in a state of accommodating a diode in the internal space,
   The said 2nd contact member is a solar cell module located in the state electrically connected with the said diode.
7. The solar cell module according to claim 5 or 6, wherein
   The spring constant of the second contact member in the main body along the direction in which the first contact member is pushing the second contact member is along the direction in which the second contact member is pushing the first contact member. The solar cell module which is smaller than the spring constant of the said 1st contact member in the said base | substrate part.
8. The solar cell module according to any one of claims 5 to 7,
   The amount of elastic deformation of the second contact member along the direction in which the first contact member pushes the second contact member is the base portion along the direction in which the second contact member pushes the first contact member. A solar cell module that is larger than an elastic deformation amount of the first contact member.
9. The solar cell module according to any one of claims 1 to 8, wherein
   The engaging portion is a plate-like flexible portion located in a state of extending toward the base portion along the covering portion, and the engaged portion on the base portion side of the plate-like flexible portion. A solar cell module comprising: an engaging portion positioned in engagement with the portion.
10. A base portion, and a main body portion attachable to the base portion,
    The base portion is
    A hole for positioning the conductive wire existing from the inside of the solar cell panel to a region on the surface of the solar cell panel, and a plate for positioning on the surface;
    A hooked portion that exists in a state of protruding from the first portion of the plate portion;
    An engaged portion that exists in a state of protruding from a second portion of the plate portion away from the first portion,
    The main body is
    A cover portion that has an opening that can be positioned on the plate portion side by mounting the main body portion on the base portion and can form an internal space together with the plate portion;
    When the main body portion is mounted on the base body portion, it exists in a state of protruding from the third portion of the annular side portion located in a state surrounding the opening of the covering portion. A hanging portion that is rotatable about a virtual rotation axis with respect to the hanging portion in a state of hanging on the hanging portion;
    A terminal box for a solar cell module, comprising: an engaging portion that is present in a fourth portion of the annular side portion remote from the third portion and engageable with the engaged portion.

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