CN103390669A - Photovoltaic junction box - Google Patents

Abstract

The invention relates to a photovoltaic junction box. The photovoltaic junction box comprises a box body, a box cover and a copper plate, wherein the box cover is matched with the box body, and the copper plate is installed inside the box body. The box body comprises an installation part and a base, wherein the base extends downwards from the installation part, and comprises a plurality of light permeating parts. Due to the fact that the box body of the photovoltaic junction box is provided with the base which is provided with the light permeating parts, the photovoltaic junction box has good light permeating performance, and after the photovoltaic junction box is installed on a battery plate, the sunshine can enter the part between the photovoltaic junction box and the battery plate through the light permeating parts of the photovoltaic junction box, and the conversion efficiency of the battery plate is improved.

Description

A kind of photovoltaic junction box

Technical field

The present invention relates to a kind of photovoltaic junction box.

Background technology

Inexhaustible solar energy is just favored by increasing people.Solar energy power generating is more listed in new energy development utilization plan by many countries, and application quantity enlarges year by year.The photovoltaic junction box that generally uses at present comprises box body, the lid that coordinates with this box body and is arranged on box body interior copper coin and diode.Photovoltaic junction box is fixed on cell panel by box body, and after photovoltaic junction box is installed on cell panel at present, sunlight can't pass box body and shine the photovoltaic junction box bottom, cause the cell panel part that photovoltaic junction box is installed can't absorb solar light, thereby reduced the application area of cell panel.

Summary of the invention

The object of the present invention is to provide a kind of good light permeability energy that has, improve the photovoltaic junction box of cell panel conversion efficiency.

For realizing aforementioned purpose, the present invention adopts following technical scheme: a kind of photovoltaic junction box, comprise box body, the lid that coordinates with described box body and be arranged on the interior copper coin of described box body, described box body comprises installation portion and the base that extends to form from described installation portion downwards, and described base comprises some transmittance sections.

As a further improvement on the present invention, described base also comprises base portion, and described transmittance section is disposed on described base portion.

As a further improvement on the present invention, described transmittance section forms for connecting described base portion.

As a further improvement on the present invention, have the fixture block that protrudes out on described base portion outside box body, described box body comprises cover body part, the snap ring that coordinates with described fixture block to downward-extension on described cover body part relative position.

As a further improvement on the present invention, described transmittance section is plastic film.

As a further improvement on the present invention, described box body also comprises by described base and installation portion and encloses the cavity that forms, and described transmittance section is positioned at the both sides of described cavity.

as a further improvement on the present invention, described box body also comprises the peristome that connects described installation portion, described photovoltaic junction box also comprises some convergent belts that form a line and be electrically connected with copper coin along the box body longitudinally, described copper coin comprises the body that is fixed on installation portion and some and the convergent belt terminal of corresponding electric connection one by one, described terminal comprise some from body along vertical with the box body longitudinally in a lateral direction and the first terminal that extends to form towards peristome, and two from body along the second terminal that extends to form on the box body longitudinally and towards peristome.

As a further improvement on the present invention, described the second terminal is arranged at the outside of the first terminal.

The present invention is by arranging the base with transmittance section on the box body of photovoltaic junction box, make photovoltaic junction box have good light transmission, thereby after photovoltaic junction box is installed on cell panel, solar energy enters between photovoltaic junction box and cell panel from the transmittance section of photovoltaic junction box, has improved the cell panel conversion efficiency.

Description of drawings

Fig. 1 is the structural representation of photovoltaic junction box in one embodiment of the invention.

Fig. 2 is the exploded view of Fig. 1.

Fig. 3 is the exploded view of Fig. 1 on other direction.

Embodiment

See also Fig. 1 to 3, the photovoltaic junction box of one embodiment of the invention, the cable (not shown),diode 4 and the convergent belt (not shown) that comprisebox body 1, thelid 2 that coordinates withbox body 1, be arranged on thecopper coin 3 inbox body 1 and be electrically connected withcopper coin 3 respectively.

Thebase 13 thatbox body 1 comprisesinstallation portion 11 thatcopper coin 3 is installed, connects theperistome 12 ofinstallation portion 11, extend to form frominstallation portion 11, bybase 13 andinstallation portion 11, enclose thecavity 14 that forms and thediode accepting groove 15 that is recessed to form to accommodatediode 4 frominstallation portion 11 downwards downwards.

Base 13 comprisesbase portion 131 and the sometransmittance sections 132 that are disposed onbase portion 131, and thistransmittance section 132 is positioned at the both sides of cavity 14.In the present embodiment, thistransmittance section 132 is formed by connecting base portion 131.Except the present embodiment, thistransmittance section 132 can also for the integrated plastic film of base portion 131.The purpose that thistransmittance section 132 is set is to make base to have light transmission function, thereby make the photovoltaic junction box bottom have good light transmission, after photovoltaic junction box is installed on cell panel, solar energy enters between photovoltaic junction box and cell panel from the transmittance section of photovoltaic junction box, improves the cell panel conversion efficiency.Has thefixture block 133 that protrudes out onbase portion 131outside box body 1, be provided with thesnap ring 22 that is clasped with thisprojection 133 on the relative position oflid 2, the connection of being connected with snap ring by thisfixture block 133 can fixedbin body 1 andlid 2, thereby prevents thatbox body 1 from separating withlid 2.

In the present embodiment, becausetransmittance section 132 connectsbase portion 131, so on the other hand, thistransmittance section 132 also is conducive to the circulation of air ofbox body 1 bottom, has improved the heat dispersion of photovoltaic junction box.And from the thermal diffusivity aspect, consider, in order to make heat dispersion more superior,box body 1 also comprises the sometraining walls 16 that extend to form frominstallation portion 11 downwards, the guidinggutter 161 of formation one in order to guide gas flow between every adjacent twotraining walls 16,diode accepting groove 15 protrudes outinstallation portion 11 bottom surfaces and is positioned at this guiding gutter 161.In the present embodiment, thisdiode 4 is provided with three, and correspondingdiode accepting groove 15 is also three.

Lid 2 comprisescover body part 21, connects theencapsulating mouth 23 ofcover body part 21, covers theencapsulating lid 24 on encapsulating mouth 23.In the present embodiment, encapsulatingmouth 23 and encapsulatinglid 24 are connected and fixed by buckle, are provided with theclasp arm 241 that protrudes out towards encapsulatingmouth 23 onencapsulating lid 24, and theclasp groove 231 that is clasped with thisclasp arm 241 is set on the interior corresponding position of encapsulating mouth 23.22 of snap rings that coordinate withfixture block 133 onbox body 1 extend to form downwards on the relative position ofcover body part 21.

Also correspondence offers the firstcable clamping interface 17 and the secondcable clamping interface 25, the firstcable clamping interfaces 17 and the secondcable clamping interface 25 and is semicircle onbox body 1 andlid 2, and both coordinate formation to wear the circular recess of cable for it.The firstcable clamping interface 17 forms frominstallation portion 11 indents, have formed twobuckle slots 134 of thebase portion 131 of perforation on thebase 13 of these the firstcable clamping interface 17 both sides, the secondcable clamping interface 25 forms from covering our department's 21 indents, ourdepartment 21 is extended with thebuckle 26 that coordinates withbuckle slot 134 downwards from lid, and thisbuckle 26 is positioned at the secondcable clamping interface 25 both sides.

Convergent belt forms a line alongbox body 1 longitudinally, is provided withjube 121 between every adjacent two convergent belts, andjube 121 is positioned at peristome 12.Copper coin 3 comprise thebody 31 that is fixed oninstallation portion 11, with theconvergent belt terminal 32 of corresponding electric connection one by one.Thisterminal 32 comprise two frombody 31 along vertical withbox body 1 longitudinally in a lateral direction and thefirst terminal 321 that extends to form towardsperistome 12, and two frombody 31 along onbox body 1 longitudinally and be oppositely arranged and be positioned at the outside of two thesecond terminals 321 towards 322, two thesecond terminals 322 of the second terminal thatperistome 12 extends to form.

Although be the example purpose, the preferred embodiment of the present invention is disclosed, but those of ordinary skill in the art will recognize, in the situation that do not break away from by the disclosed scope and spirit of the present invention of appending claims, various improvement, increase and replacement are possible.

Claims (8)

1. photovoltaic junction box, comprise box body, the lid that coordinates with described box body and be arranged on the interior copper coin of described box body, described box body comprises installation portion, it is characterized in that: described box body also comprises the base that extends to form from described installation portion downwards, and described base comprises some transmittance sections.

2. photovoltaic junction box according to claim 1, it is characterized in that: described base also comprises base portion, described transmittance section is disposed on described base portion.

3. photovoltaic junction box according to claim 2 is characterized in that: described transmittance section forms for connecting described base portion.

4. photovoltaic junction box according to claim 3, it is characterized in that: have the fixture block that protrudes out outside box body on described base portion, described box body comprises cover body part, the snap ring that coordinates with described fixture block to downward-extension on described cover body part relative position.

5. photovoltaic junction box according to claim 1, it is characterized in that: described transmittance section is plastic film.

6. the described photovoltaic junction box of any one according to claim 1 to 5 is characterized in that: described box body also comprises by described base and installation portion and encloses the cavity that forms, and described transmittance section is positioned at the both sides of described cavity.

7. the described photovoltaic junction box of any one according to claim 1 to 5, it is characterized in that: described box body also comprises the peristome that connects described installation portion, described photovoltaic junction box also comprises some convergent belts that form a line and be electrically connected with copper coin along the box body longitudinally, described copper coin comprises the body that is fixed on installation portion and some and the convergent belt terminal of corresponding electric connection one by one, described terminal comprise some from body along vertical with the box body longitudinally in a lateral direction and the first terminal that extends to form towards peristome, and two from body along the second terminal that extends to form on the box body longitudinally and towards peristome.

8. photovoltaic junction box according to claim 7, it is characterized in that: described the second terminal is arranged at the outside of the first terminal.

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