KR20130096815A - Junction box for solar battery module - Google Patents

Junction box for solar battery module Download PDF

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Publication number
KR20130096815A
KR20130096815A KR1020120018316A KR20120018316A KR20130096815A KR 20130096815 A KR20130096815 A KR 20130096815A KR 1020120018316 A KR1020120018316 A KR 1020120018316A KR 20120018316 A KR20120018316 A KR 20120018316A KR 20130096815 A KR20130096815 A KR 20130096815A
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KR
South Korea
Prior art keywords
cable
junction box
top cover
bottom cover
contact terminal
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KR1020120018316A
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Korean (ko)
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KR101354507B1 (en
Inventor
이태희
박충열
김영춘
Original Assignee
주식회사 한국쏠라케이블
김영춘
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Application filed by 주식회사 한국쏠라케이블, 김영춘 filed Critical 주식회사 한국쏠라케이블
Priority to KR1020120018316A priority Critical patent/KR101354507B1/en
Publication of KR20130096815A publication Critical patent/KR20130096815A/en
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Publication of KR101354507B1 publication Critical patent/KR101354507B1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

PURPOSE: A junction box for a solar cell module capable of improving mount convenience is provided to easily connect an interconnect ribbon cable and a contact terminal and be quickly fixed to the back surface of the solar cell module. CONSTITUTION: A bottom cover (110) is arranged near an opening part. The bottom cover includes a contact terminal holder (112) and a contact terminal fixing boss part (113). The contact terminal holder has a contact terminal connected with an interconnect ribbon cable. A top cover (120) is attachable to and detachable from the bottom cover. The top cover includes a cable terminal fixing boss part.

Description

Junction box for photovoltaic module with increased convenience {JUNCTION BOX FOR SOLAR BATTERY MODULE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a junction box for a photovoltaic module with increased mounting convenience, and more particularly, to an interconnect ribbon cable of a photovoltaic module and a contact terminal of a junction box. It is easy to connect to the convenience of mounting on the junction box can be increased, and furthermore relates to a junction box for a solar module junction box for increased ease of mounting, which can be easily and quickly fixed to the back of the solar module will be.

Due to the depletion of chemical energy such as coal and petroleum and environmental pollution due to the use of chemical energy, efforts are being made to develop alternative energy. One of them is photovoltaic power generation using solar energy.

Photovoltaic power generation is a series of technologies that convert solar energy (solar heat or sunlight) into electrical energy.

Briefly, the basic principle is that when solar light is irradiated to a solar cell composed of a pn junction semiconductor, electron and hole pairs are generated by light energy, and electrons and holes move across the n and p layers. The electromotive force is generated by the photovoltaic effect through which the current flows, and the result of the current flowing to the externally connected load is used.

As described above, in order to convert the solar energy in the indefinite and pollution-free into electric energy, the development of a technology for a solar battery module for condensing sunlight is required.

Although not exactly the same, it is known that a single solar module goes through a number of devices or systems, just like an LCD process or a semiconductor process.

Different manufacturers may have different methods, but once the solar module is finally manufactured, a junction box is mounted on the solar module. The junction box acts as a kind of electrical connector.

1 is a general structural diagram of a junction box.

Referring to this figure, a general junction box currently in use consists of a lower main body box 2 and an upper cover 1 covering an upper surface opening of the lower main body box 2.

Unlike the upper cover 1, the lower body box 2 is a box-shaped structure having a constant height, and inside thereof, a ribbon cable in-out area, a contact terminal, and the like. Is provided.

Therefore, the interconnect ribbon cable (inter-connect ribbon cable) coming from the back sheet of the solar module is connected to the contact terminal through the ribbon cable entry and exit in the lower body box (2), after which the junction box It is fixed by silicon to be located at the rear of the solar module.

However, in the case of the conventional junction box having a structure as shown in FIG. 1, since the lower main body box 2 is a box-shaped structure, the interconnect ribbon cable of the solar module due to the high structural limit of the lower main body box 2 It is not easy to connect the contact terminals of the junction box, there is a problem that the overall ease of mounting on the junction box is reduced.

In addition, since the lower body box (2) is a box-shaped structure and the height of the lower body box (2) is high, it is necessary to wait until the silicon between the photovoltaic module and the junction box is cured. A structural improvement considering the need is required.

Korean Patent Office Application No. 10-2010-0005538

An object of the present invention is to facilitate the operation of connecting the interconnect ribbon cable (inter-connect ribbon cable) of the photovoltaic module and the contact terminal (contact terminal) of the junction box can increase the convenience of mounting on the junction box Further, it is to provide a junction box for a photovoltaic module that can be easily and quickly fixed to the junction box on the back of the photovoltaic module with increased mounting convenience.

The object is a contact terminal holder which is arranged adjacent to the opening and is fitted with a contact terminal which is connected to an interconnect ribbon cable coming out of the back sheet of the solar module. And a bottom cover disposed adjacent to the contact terminal holder, the bottom cover including a contact terminal high information portion to which the contact terminal is fixed; And a top terminal having a cable terminal high information portion to which a cable terminal electrically connected to the contact terminal is fixed, and a top cover detachably coupled to the bottom cover. Convenience is achieved by a junction box for photovoltaic modules with increased convenience.

The bottom cover may be manufactured in a plate type, and the top cover may be manufactured in a box type that covers the bottom cover.

A double-sided tape which can contact the rear surface of the solar module may be bonded to the bottom of the bottom cover.

A rubber ring may be interposed between the bottom cover and the top cover to maintain airtightness between the bottom cover and the top cover.

The opening may form a charging place of silicon to fix the bottom cover to the rear surface of the solar module.

One end portion may further include a cable support disposed in the top cover to be electrically connected to the cable terminal and the other end to support a cable extending to the outside of the top cover.

The cable support may include a cable rubber of rubber material inserted into the cable and inserted into a cable through part of the top cover to support the cable.

The cable support may include a first hook coupled to a first hook hole formed at a rear surface of the top cover, and further include a first stopper supporting the cable at the rear surface of the top cover.

The cable support may include a second hook coupled to the second hook hole of the first stopper, and further include a second stopper coupled to the first stopper to support the cable.

According to the present invention, it is easy to connect the interconnect ribbon cable (inter-connect ribbon cable) of the photovoltaic module and the contact terminal (contact terminal) of the junction box, the convenience of mounting on the junction box can be increased, Furthermore, the junction box can be easily and quickly fixed to the rear of the solar module.

1 is a general structural diagram of a junction box.
2 is a front image of a junction box for a photovoltaic module having increased convenience of mounting according to an embodiment of the present invention.
3 is a back image of FIG. 2.
4 is an exploded perspective view of Fig.
5 is a cross-sectional image of FIG. 2.
6A and 6B are front and rear images of the bottom cover, respectively.
7A and 7B are front and back images of the top cover, respectively.
8 to 11 are enlarged images of a contact terminal, a cable terminal, a first stopper and a second stopper, respectively.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

2 is a front image of a junction box for a photovoltaic module having increased convenience in mounting according to an embodiment of the present invention, FIG. 3 is a rear image of FIG. 2, FIG. 4 is an exploded perspective view of FIG. 2, and FIG. 5 is of FIG. 2. 6A and 6B show the front and back images of the bottom cover, FIGS. 7A and 7B show the front and back images of the top cover, respectively, and FIGS. 8 to 11 show the contact terminals, cable terminals and first stoppers, respectively. And an enlarged image of the second stopper.

Before explaining the junction box, let's take a brief look at the solar modules. The solar module has a structure in which a plurality of cells are arranged in a frame in a lateral or width direction. The plurality of cells are adjacently connected to one another by longitudinal ribbons, and the longitudinal ribbons are in turn electrically connected by corresponding ones by upper and lower transverse ribbons. Transverse ribbon is also referred to as interconnect ribbon. As the plurality of cells are connected in this manner, ie, the longitudinal ribbons and the transverse ribbons, the plurality of cells can collect sunlight while taking the state of being energized entirely. Such a solar module is assembled by placing an EVA sheet for waterproofing on the upper surface of the glass substrate, a plurality of cells electrically connected by longitudinal ribbons, another EVA sheet, and a back sheet. Later, they can be laminated so that they form one body.

A junction box to be described later is mounted on one side of the solar module thus made. Junction box is a kind of electrical connector and serves to output the concentrated electrical energy to one place.

Referring to Figures 2 to 11 but mainly referring to Figure 4, the junction box for a photovoltaic module with increased ease of mounting according to an embodiment of the present invention, the bottom cover (bottom cover, 110) in which a plurality of parts are assembled And a top cover 120.

The bottom cover 110 is a structure fixed to the rear of the solar module. In the case of the prior art, the bottom cover (not shown) is a box-shaped structure called the lower body box 2, as shown in FIG.

Therefore, it is easy to connect the interconnect ribbon cable of the solar module and the contact terminal 130 of the junction box, thereby increasing the convenience of mounting the junction box.

In addition, since the silicone is easy to cure, the storage problem caused by waiting until the silicone is cured as in the prior art does not arise.

The bottom cover 110 is disposed in the opening 111 and adjacent to the opening 111, and a contact terminal holder on which the contact terminal 130 connected to the interconnect ribbon cable coming out of the rear back sheet of the solar module is mounted. The contact terminal holder 112 is disposed adjacent to the contact terminal holder 112 and to which the contact terminal 130 is fixed.

Although not shown, the interconnect ribbon cable may pass through the through hole 115 in which the contact terminal holder 112 of the bottom cover 110 is disposed, and after this, the contact terminal 130 mounted to the contact terminal holder 112 may pass. And can be electrically connected. Of course, it is not necessary to limit the scope of the present invention to these matters.

The contact terminal 130 is provided with a through hole 131 for screwing the contact terminal and the high information portion 113.

One side of the bottom cover 110 is provided with a wing portion 114 protrudes, the inner side surface is formed with a stepped portion (115).

The opening 111 is a section opened to a wide area in the plate type bottom cover 110. Silicon is later fixed through the opening 111, so that the bottom cover 110 can be easily and quickly fixed at the rear of the solar module.

The rear surface of the bottom cover 110 is bonded to the double-sided tape 161 that can contact the back of the solar module. The double-sided tape 161 is used to temporarily adhere the bottom cover 110 to the rear surface of the solar module.

A rubber ring 163 is disposed between the bottom cover 110 and the top cover 120 to maintain the airtightness between the bottom cover 110 and the top cover 120. The rubber ring 163 may be provided as a closed loop rubber ring.

On the other hand, the top cover 120 is manufactured in a box type that covers the bottom cover 110, unlike the prior art.

Since the assembly of the main parts is already in progress through the bottom cover 110, the operation of covering the top cover 120 on the bottom cover 110 is not so difficult.

The top cover 120 is provided with a cable terminal high information portion 121 to which a cable terminal 140 electrically connected to the contact terminal 130 is fixed.

The cable terminal 140 also has a through hole 141 for screwing the cable terminal high information portion 121, and the cable terminals 140 are spaced apart from each other by the packing (P).

In addition to the junction box according to the present invention is further provided with a cable support 150. One end of the cable support 150 is disposed in the top cover 120 to be electrically connected to the cable terminal 140, and the other end of the cable support 150 supports a cable extending to the outside of the top cover 120.

The cable support 150 includes a cable rubber 151, a first stopper 152, and a second stopper 155.

The cable rubber 151 is inserted into the cable but inserted into the cable through part 122 of the top cover 120 to support the cable. In other words, the cable rubber 151 made of rubber serves to support the cable in the cable through part 122.

The first stopper 152 has a first hook 153 coupled to the first hook hole 123 formed at the rear of the top cover 120, and supports the cable at the rear of the top cover 120. Do it. The first hook 153 is provided in pairs on both sides of the first stopper 152, and is coupled to the pair of first hook holes 123 formed on the rear surface of the top cover 120.

The second stopper 155 has a second hook 156 coupled to the second hook hole 154 of the first stopper 152 and is coupled to the first stopper 152 to support the cable. . The second hook 156 is provided in pairs on both sides of the second stopper 155, and is coupled to the pair of second hook holes 154 formed in the second stopper 155.

Finally, the top cover 120 of the junction box of the present embodiment is mixed with a material that changes color depending on the temperature change based on the operation of the solar module. The entire top cover 120 may be made of such a material, or may be provided at a level of mixing a partial material.

In addition, a temporal sensor 170 is provided at the top cover 120. The top cover 120 may further include a seat groove 124 in which the temporal sensor 170 is disposed so that the temporal sensor 170 may be uniformly disposed. Of course, the seat groove 124 is a lower bed, not a configuration that must be provided.

In the space between the bottom cover 110 and the top cover 120, a current bypassed by a cell or a group of cells forming the solar module when the solar module is shaded is a bypass diode (not shown). Heat sensing transmitters 171 and 172 are provided to sense heat generated when flowing through) and to transmit it to the temporal sensor 170.

In the present embodiment, the heat sensing carriers 171 and 172 include a plurality of conductors 171 and a conductor ring 172 that is provided to correspond to the plurality of conductors 171 one by one.

Therefore, when a current that is bypassed to a cell or a group of cells flows through the bypass diode when shading occurs in the photovoltaic module, heat is generated on the surface of the bypass diode, and the heat is the conductor 171 which is the heat sensing carriers 171 and 172. And is transmitted to the top cover 120 through the conductor ring 172, thereby changing the color of the top cover 120. Since the color change of the top cover 120 can be easily checked with the naked eye, it is easy to check whether the solar module is operated. In particular, such a structure will be advantageous because it has a permanent characteristic rather than a one-time as a characteristic of the reversible change.

The structure as described above, that is, unlike the prior art, when the bottom cover 110 is made of a plate (plate) type, the top cover 120 is made of a box (box) type covering the bottom cover 110, the production Not only is this easy, it is also easy to connect cables.

As such, according to the present embodiment, the operation of connecting the interconnect ribbon cable of the solar module and the contact terminal 130 of the junction box can be easily performed, thereby increasing the convenience of mounting the junction box, and further, the solar module. The back of the junction box can be easily and quickly fixed.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

110: bottom cover 111: opening
112: contact terminal holder 113: contact terminal
114: wing 120: top cover
121: cable terminal high information part 130: contact terminal
140: cable terminal 150: cable support
151 cable rubber 152 first stopper
155: second stopper 161: double-sided tape
163: rubber ring

Claims (9)

A contact terminal holder disposed adjacent to the opening and mounted with a contact terminal connected to an interconnect ribbon cable emerging from a back sheet of the solar module; A bottom cover disposed adjacent to the terminal holder and having a contact terminal high information portion to which the contact terminal is fixed; And
And a cable terminal high information portion to which a cable terminal electrically connected to the contact terminal is fixed, and a top cover detachably coupled to the bottom cover. Junction box for this enhanced solar module. The method of claim 1,
The bottom cover is made of a plate (plate) type, the top cover is characterized in that the box (cover) is produced to cover the bottom cover, junction box for a solar module with increased ease of mounting. The method of claim 1,
On the back of the bottom cover is characterized in that the double-sided tape which is in contact with the back of the photovoltaic module is bonded, junction box for a solar module with increased ease of mounting. The method of claim 1,
Junction box for a solar module with increased ease of mounting, characterized in that a rubber ring for maintaining the airtight between the bottom cover and the top cover between the bottom cover and the top cover. The method of claim 1,
The opening is a junction box for a solar module with increased ease of mounting, characterized in that the bottom cover to form a charging place of silicon to be fixed to the rear of the solar module. The method of claim 1,
One end portion is disposed in the top cover and electrically connected to the cable terminal and the other end further comprises a cable support for supporting a cable (cable) extending to the outside of the top cover, the mounting convenience is increased Junction box for solar modules. The method according to claim 6,
The cable support,
And a cable rubber of a rubber material inserted into the cable to be inserted into the cable through part of the top cover to support the cable. The method according to claim 6,
The cable support,
And a first hook coupled to a first hook hole formed at a rear surface of the top cover, and further comprising a first stopper supporting the cable at the rear surface of the top cover. Junction box for solar modules. 9. The method of claim 8,
The cable support,
And a second stopper coupled to the second hook hole of the first stopper, and further comprising a second stopper coupled to the first stopper to support the cable. Junction box for modules.
KR1020120018316A 2012-02-23 2012-02-23 Junction box for solar battery module KR101354507B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120018316A KR101354507B1 (en) 2012-02-23 2012-02-23 Junction box for solar battery module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120018316A KR101354507B1 (en) 2012-02-23 2012-02-23 Junction box for solar battery module

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KR20130096815A true KR20130096815A (en) 2013-09-02
KR101354507B1 KR101354507B1 (en) 2014-01-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101523048B1 (en) * 2014-12-17 2015-05-27 임일환 Junction box

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102390907B1 (en) 2020-07-22 2022-04-25 신선숙 Compact junction box for double-sided solar modules

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100981362B1 (en) * 2009-09-17 2010-09-10 주식회사 디에스 솔라에너지 Junction box for solar cell module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101523048B1 (en) * 2014-12-17 2015-05-27 임일환 Junction box

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