CN201813117U

CN201813117U - Junction box

Info

Publication number: CN201813117U
Application number: CN2010201780046U
Authority: CN
Inventors: 王栋; 鲍科芳; 王禹
Original assignee: Wuxi Suntech Power Co Ltd
Current assignee: Wuxi Suntech Power Co Ltd
Priority date: 2010-04-19
Filing date: 2010-04-19
Publication date: 2011-04-27
Anticipated expiration: 2020-04-19

Abstract

The utility model relates to a junction box comprising a junction box body, a diode, a conducting connection sheet and a cable, wherein the conducting connection sheet is connected with the diode and the cable; and the junction box body is provided with an insertion hole for insertion of connecting conductors. The utility model further provides a solar battery component including the junction box. With the junction box, the insulating performance is improved, the occurrence of wet electricity leakage can be prevented; and the junction box is easy to be mounted and filled with glue.

Description

Terminal box

Technical field

The utility model relates to the photovoltaic field, relates in particular to a kind of photovoltaic cell component terminal box.

Background technology

In recent years, utilize photovoltaic effect that conversion of solar energy has been reached its maturity for the utilization of electric energy and generally.Application as the solar cell of basic electrooptical device and assembly thereof is increasingly extensive, wherein, solar module combine with building or solar module is more and more come into one's own as the The application of glass act wall of building, special in the application of solar cell in the city, have more practical significance and obtained good economic benefit.

Light transmission requirement when using as constructure screen wall in order to satisfy, the general pair glass assemblies that adopt of the solar module of this class, it mainly is made up of panel, intermediate layer and base plate.Wherein, base plate and panel are the glass with high transmission rate, and the intermediate layer is to have encapsulated the seal modules of solar cell piece or be the hull cell module through encapsulation.Below in conjunction with the formation of Fig. 1 simple declaration as the solar module of photovoltaic curtain wall.As shown in the figure, solar module 1 comprises a plurality of a plurality of battery sheets 10 that are arranged, draws the positive and negative extreme of monoblock solar module 1 by busbar again after connecting by interconnector 5 (such as for tin-coated copper tape welding band) between the battery sheet 10.Curtain wall edge terminal box 3 be arranged on solar module 1 the curtain wall avris, according to actual needs, interconnect by the busbar of terminal box 3 positive and negative electrode, to realize two electric connections between the adjacent solar module two adjacent solar battery assemblies.Be provided with the diode of protection solar module in the terminal box 3, the assembly that the hot spot effect that prevents from may to occur in the solar module causes damages.Diode in the terminal box and other conducting elements should guarantee to seal to be avoided and extraneous contacting, and prevents the wet electric leakage problem of assembly.

In the solar energy glass curtain wall structure, if terminal box 3 goes wrong, with the quality problems that badly influence as the solar module of glass curtain wall.

Fig. 2 and Fig. 3 are respectively the rough schematics of existing two kinds of terminal boxes.

In the terminal box shown in Figure 2, busbar is connected with terminal box 6 in the mode of pushing by spring pressuring plate 62, and such connected mode causes connecting not easy to operate, also causes contact resistance to become big easily.In addition, terminal box 6 shown in Figure 2, it overlaps in the position 60 with the terminal box aperture position with the insertion mouth position of busbar.When the terminal box of using this structure connected two battery components, aperture position can be towards battery component, and can not the positive operation person, make the later stage encapsulating and relatively difficulty is installed.Terminal box 6 shown in Figure 2 seals cable by terminal box 6 by sealing ring, because the size of sealing ring and cable is not easy to reach accurate coupling, so the problem of leaking electricity appears in the easy poor sealing in the position that terminal box 6 contact with cable.

Compare with Fig. 2, in the terminal box shown in Figure 3, busbar wherein inserts the side that mouth 30 is positioned at terminal box 7 by inserting mouthful 30 theretos 7; The opening 32 of terminal box 7 then is positioned at another side of terminal box, is easier to thus install and follow-up encapsulating operation.But terminal box 7 shown in Figure 3 is entered because it inserts mouthful 30 excessive easy seepages of steam that cause, and causes wet leaky; In addition, very high because busbar is exposed outside to the seal request after installing, otherwise, also cause wet leaky easily.

In sum, the wet leaky of existing terminal box or generation, or the problem of the more difficult fitting operation of existence.

The utility model content

For overcoming the above problems, the utility model proposes a kind of terminal box, it is used to connect solar module, this terminal box comprises: integrated terminal box body, this terminal box body comprises diode, conductive connecting piece and cable, and this conductive connecting piece is connected with this cable with this diode respectively, and wherein, this terminal box body has for connecting the insertion mouth that lead inserts.

Preferably, this terminal box body is that integral molded plastic forms, and this diode, partially conductive brace and cable are covered by in this terminal box body.

Preferably, be provided with opening having a perpendicular side of the side of this insertion mouthful, and this opening inserts a mouthful perforation with this with this terminal box.

Preferably, around the edge in this terminal box body outside, be provided with protruding stupefied at this insertion mouth.

Preferably, be provided with a plurality of protruding stupefied in the side that this terminal box body has this insertion mouthful.

Preferably, this conductive connecting piece welds with this diode and this cable respectively; Preferably, this conductive connecting piece is zinc-plated copper sheet.

The utility model also provides a kind of junction box for solar cell module, comprise the terminal box body, comprise diode in this terminal box body, conductive connecting piece, cable, and this conductive connecting piece is connected with this cable with this diode respectively, and this terminal box body has and the corresponding insertion mouth of component bus bar size, and is provided with protruding stupefied around the edge in this terminal box body outside at this insertion mouth.

Preferably, be provided with opening having at least one perpendicular side of the side of this insertion mouthful, and this opening inserts a mouthful perforation with this with this terminal box.

Preferably, this insertion mouth is arranged on the side that this terminal box contacts with this solar module side.

Preferably, be provided with a plurality of protruding stupefied in the described side that the terminal box of busbar insertion mouth is set.

The utility model also provides a kind of solar module, comprise panel, base plate and be encapsulated in panel and base plate between solar battery module, this solar module comprises above-described terminal box or junction box for solar cell module.

Preferably, described panel and base plate are transparent glass.

The beneficial effects of the utility model are, use terminal box described in the utility model, can effectively avoid the wet leaky of solar module and easy for installation.

Description of drawings

Fig. 1 is the formation schematic diagram as the solar module of photovoltaic glass curtain wall;

Fig. 2 and Fig. 3 are respectively the structural representations of terminal box that is used to be connected solar module of prior art; And

Fig. 4 is the structural representation of terminal box described in the utility model.

Embodiment

Below with reference to accompanying drawing, elaborate a specific embodiment of the present utility model.Below, being applied in two glass solar modules of photovoltaic curtain wall with the utility model is that example describes, but and non-limiting the utility model only can be applied in the solar module of described embodiment.Below in the explanation, term " longitudinal length " refers to and the consistent length of terminal box inner cable bearing of trend.

Fig. 4 is the schematic diagram of terminal box described in the utility model.As shown in the figure, terminal box described in the utility model comprises terminal box body 4, diode, conductive connecting piece, connects lead (such as busbar) and inserts mouth 70, protruding stupefied 50 and opening 10.

The one end welding of diode and conductive connecting piece, the other end of conductive connecting piece and cable welding; Wherein, conductive connecting piece is formed by zinc-plated copper sheet, also can conduct electricity the class material by other and form.With cable, with the part of the conductive connecting piece of cable welding and with the diode that conductive connecting piece welds together, put into previously prepared mould, by the integrally formed terminal box body 4 of the mode of integral molded plastic.The part of diode, conductive connecting piece and cable are injection-moulded in the terminal box body 4, and other parts 301 of conductive connecting piece then are exposed outside.Need to prove, diode is connected in the mode of welding respectively with cable with conductive connecting piece and conductive connecting piece, to guarantee that it has less contact resistance, but the utility model is not limited thereto, diode also can otherwise be connected respectively with cable with conductive connecting piece and conductive connecting piece, as long as can reach the effect of electric connection.

The insertion mouth 70 that inserts for busbar 80 is set in first side 41 of terminal box body 4, and its size is identical with busbar or be slightly larger than busbar.In second side 42 of terminal box body and with insert mouthful 70 corresponding positions, form opening 10, so that busbar 80 is soldered to the conductive connecting piece 301 of terminal box body 4 and carries out follow-up sealant pouring and sealing processing, alternatively, the longitudinal length of opening 10 is a bit larger tham the longitudinal length that inserts mouth 70.Because it is suitable to insert the size and the busbar of mouth 70, diode, most of conductive connecting piece and cable are covered by in the terminal box body 4, only expose busbar and inserted the conductive connecting piece of mouthful position, so terminal box described in the utility model has reduced conductor wherein and the outside area that contacts, the insulation property of terminal box have been improved.In addition, because opening 10 is arranged on second side 42 vertical with first side 41, connecting with terminal box in the operation of two solar modules, second side 42 can be towards the operator, and then convenient greatly operation of irritating fluid sealant.

In addition, preferably, be formed with protruding stupefied 50 in first side 41 of terminal box body 4.Protruding stupefied 50 be arranged on insert mouthfuls 70 around, preferably, be arranged on insert mouthful edge around, thus, make insert mouthfuls 50 around can ccontaining certain thickness insulation silica gel, further guaranteed the insulation property of terminal box.Alternatively, a plurality of protruding stupefied and grooves can be set in first side 41, that is, between two protruding stupefied 50 or the position of the right and left similarly protruding stupefied and groove structure can be set again.Because this protruding stupefied and groove setting, make and have certain clearance between first side 41 of terminal box and the solar module, thereby increase the gluing area between terminal box and the solar cell template, improve the mechanical strength of insulation property and whole photovoltaic curtain wall system.

To sum up, terminal box described in the utility model has been improved the insulation property of terminal box, has prevented the generation of wet leaky effectively; And operations such as encapsulating, installation have been made things convenient for.

The utility model also provides a kind of solar module, comprise panel, base plate and be encapsulated in panel and base plate between solar battery module, this solar module comprises above-described terminal box.Wherein, preferably, described panel and base plate are transparent glass.

Should be noted that above embodiment is only in order to explanation the technical solution of the utility model but not limit it.Although the utility model is had been described in detail with reference to above-mentioned embodiment; those of ordinary skill in the art is to be understood that; still can make amendment or the part technical characterictic is equal to replacement embodiment of the present utility model; and under the spirit that does not break away from the technical solution of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.

Claims

1. terminal box, it is characterized in that, comprise integrated terminal box body, described terminal box body comprises diode, conductive connecting piece and cable, and described conductive connecting piece is connected with described cable with described diode respectively, wherein, described terminal box body has for connecting the insertion mouth that lead inserts.

2. terminal box according to claim 1 is characterized in that, described terminal box body is that integral molded plastic forms, and described diode, partially conductive brace and cable are covered by in the described terminal box body.

3. terminal box according to claim 1 and 2 is characterized in that, is provided with opening having a perpendicular side of described side of inserting mouthful with described terminal box, and described opening and the perforation of described insertions mouth.

4. terminal box according to claim 3 is characterized in that, is provided with protruding stupefied around the edge in the described terminal box body outside at the described mouth that inserts.

5. terminal box according to claim 4 is characterized in that, has described side of inserting mouth at described terminal box body and is provided with a plurality of protruding stupefied.

6. terminal box according to claim 1 and 2 is characterized in that, described conductive connecting piece welds with described diode and described cable respectively.

7. terminal box according to claim 1 and 2 is characterized in that, described conductive connecting piece is zinc-plated copper sheet.

8. junction box for solar cell module, it is characterized in that, it comprises the terminal box body, comprise diode in the described terminal box body, conductive connecting piece, cable, and described conductive connecting piece is connected with described cable with described diode respectively, the insertion mouth that described terminal box body has and the component bus bar size is corresponding, and be provided with protruding stupefied towards the edge, surrounding in the described terminal box body outside at the described mouth that inserts.

9. junction box for solar cell module according to claim 8 is characterized in that, is provided with opening having a perpendicular side of described side of inserting mouthful with described terminal box, and described opening and the perforation of described insertions mouth.

10. junction box for solar cell module according to claim 9 is characterized in that, described insertion mouth is arranged at the side that described terminal box contacts with the solar module side.

11. according to claim 9 or 10 described junction box for solar cell module, it is characterized in that, be provided with a plurality of protruding stupefied in the described side that the terminal box of busbar insertion mouth is set.

12. a solar module, comprise panel, base plate and be encapsulated in panel and base plate between solar battery module, it is characterized in that, also comprise the described terminal box of one of claim 1 to 11.

13. solar module according to claim 12 is characterized in that, described panel and base plate are transparent glass.