CN201667515U

CN201667515U - Novel photovoltaic junction box

Info

Publication number: CN201667515U
Application number: CN2009201736360U
Authority: CN
Inventors: 荣凡; 冯珺君
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-21
Filing date: 2009-08-21
Publication date: 2010-12-08
Anticipated expiration: 2019-08-21

Abstract

The utility model relates to a novel photovoltaic junction box, comprising a module which is encapsulated independently and a junction box shell, the module is formed by encapsulation or mould pressing of an electricity-conduction connecting sheet (1), a cable connecting sheet (3) and a diode (2), a photovoltaic cable (5) is welded on the cable connecting sheet (3) on the module, the module and a box body are welded by adopting a plastic welding mode of a locating hole on the module, a locating column corresponding to the lower box and a locating groove corresponding to the upper box, and a cable outlet box body is arranged in the box and is sealed by an O-shaped ring; independent sealing mode of the module can test the electrical insulation property independently; by adopting the plastic welding technology, the upper and lower boxer and the located part are integrated into one body, and the integral intensity, the sealing property and the service life of the box body are greatly improved.

Description

Novel photovoltaic junction box

Technical field

The utility model relates to a kind of novel photovoltaic junction box, more reliable electric insulating quality and sealing.

Background technology

At present, the structure of known photovoltaic junction box is to be connected by buckle or securing member by upper and lower covers, waterproof sealing is to seal by the rubber seal of upper and lower covers inner rim or fluid sealant, and also the handlebar conductive connecting piece directly is poured in the form of welding bypass diode in the lower cover again and improves electric insulation.The problem that these structures exist infiltration and electric insulation to descend in the long-term use of reality.

Summary of the invention

In order to guarantee that terminal box has electric insulating quality and sealing reliably more steady in a long-term, the utility model provides a kind of novel version.

The technical scheme that its technical problem that solves the utility model adopts is: the electrical fitting of conductive connecting piece and bypass diode composition is sealed by embedding or press moulding mode, remove the terminal part that is used for connecting line, all the other seal by heat-conducting insulation material, make it become an independently module.The shell of this terminal box is welded by TECHNOLOGY OF WELDING PLASTICS by upper plastic cover and lower cover, standalone module is put into lower cover, by location hole default in the module, on cover corresponding location notch, cover corresponding reference column down, with module, upper and lower cover location, with Plastic Welding reference column, cell body, loam cake and lower cover are welded all around simultaneously at last, guarantee the bulk strength and the sealing of box body.Cable goes out box body and is in the box with the sealing of " O " type circle.

The independent sealing means of module has been got rid of because of pour into inhomogeneous, the uncontrollable quality problems that causes of insulation thickness of time perfusion layer with lower cover, has avoided the drawback that can't check simultaneously, can test its electric insulating quality separately; Pass through TECHNOLOGY OF WELDING PLASTICS, upper and lower covers and localization part are combined together, and box body bulk strength and sealing all improve greatly, because sealing surface and cell material-cause, guaranteed the long-term reliability of sealing, avoided aging and elasticity variation issue because of using rubber seal or fluid sealant to cause.

The beneficial effects of the utility model are to adopt modular construction, the type of attachment of one welded seal up and down.

Description of drawings

Fig. 1 is a module map

Fig. 2 is module and box body assembling schematic diagram

Embodiment

Below by embodiment also in conjunction with the accompanying drawings, the technical solution of the utility model is described further.

By Fig. 1, as seen shown in Figure 2, a kind of novel photovoltaic energy terminal box, the module and the terminal block housings that comprise independent embedding, it is characterized in that: the conductive connecting piece of described module (1), cable brace (3) and the electric component after diode (2) is connected, carry out embedding or mold pressing with heat-conducting insulation material, become module, a plurality of location holes (4) are set in the module, sealing around the hole, module is except that the terminals of conductive connecting piece (1) and cable brace (3), all the other all are sealing state, and its seal thickness is no less than 1.5mm.

Photovoltaic cable (5) is welded to the lower cover of putting into terminal box after cable brace (3) is gone up, covers the reference column corresponding down with location hole, on cover corresponding location notch also arranged, by location hole, post, groove with module, upper and lower cover location.With welding simultaneously around reference column, groove and the upper and lower covers, guarantee the bulk strength and the sealing of box body by the Plastic Welding mode.Cable goes out box body and is in the box with the sealing of " O " type circle.

Claims

1. novel photovoltaic junction box, the module and the terminal block housings that comprise independent embedding, it is characterized in that: the conductive connecting piece of described module (1), cable brace (3) and the electric component after diode (2) is connected, carry out embedding or mold pressing by heat-conducting insulation material, become module, photovoltaic cable (5) is welded to the lower cover of putting into terminal box after cable brace (3) is gone up, covers loam cake, by the terminal box that connects and composes of plastics upper and lower covers.

2. photovoltaic junction box according to claim 1, module is except that the terminals of conductive connecting piece (1) and cable brace (3), and all the other all are sealing state, and its seal thickness is no less than 1.5mm.

3. photovoltaic junction box according to claim 1, a plurality of location holes (4) are set in module, sealing around the hole, on cover corresponding location notch, covering down also has corresponding reference column,, will weld simultaneously around reference column, groove and the upper and lower covers with Plastic Welding module, upper and lower cover location by location hole, post, groove, guarantee the bulk strength and the sealing of box body, cable goes out box body and is in the box with the sealing of " O " type circle.