CN201860274U

CN201860274U - Integral injection molded junction box

Info

Publication number: CN201860274U
Application number: CN2010205577794U
Authority: CN
Inventors: 顾敏; 唐应堂; 王栋; 聂俊波
Original assignee: Wuxi Suntech Power Co Ltd
Current assignee: Wuxi Suntech Power Co Ltd
Priority date: 2010-09-28
Filing date: 2010-09-28
Publication date: 2011-06-08
Anticipated expiration: 2020-09-28

Abstract

The utility model provides an integral injection molded junction box, which comprises box covers, box bodies, diodes, conductive plates and cables. The diodes are welded on the conductive plates, while the diodes and the conductive plates are wrapped together by means of plastic injection molding, and the cables are connected to connection positions of the conductive plates, while the cables and the conductive plates wrapped with the diodes are further integrally molded to the box bodies by means of plastic injection molding, and formed inside the box bodies. The didoes and the conductive plates of the integral injection molded junction box are wrapped in the box bodies, the diodes and the conductive plates contact with plastic tightly, radiation can be completed by the aid of the plastic, and radiation performance is promoted. Further, the cables are wrapped in the box bodies, no connection for additional cables is needed in system mounting, operating efficiency is increased, and material utilization amount is reduced.

Description

Integral type injection moulding terminal box

Technical field

The utility model relates to the photovoltaic field, particularly a kind of photovoltaic module integral type terminal box.

Background technology

Solar energy is compared with traditional fossil fuel as a kind of new forms of energy, have inexhaustible, the advantage of green non-pollution.In international energy situation increasingly serious today, each country has all strengthened the dynamics of development solar energy industry, and the application of solar energy also more and more widely.It is to utilize the photovoltaic effect of semi-conducting material that present a kind of main solar energy utilizes mode, solar energy is transformed into electric energy uses.Solar cell is exactly a kind of typical electrooptical device, in actual applications, claims also that with solar module photovoltaic module is basic applying unit usually.The electric energy that photovoltaic module need utilize assembly junction box that photovoltaic module is produced is usually drawn and is used.Assembly junction box is except drawing electric energy, and inside also is provided with diode usually, in order to the protection photovoltaic module.

Inner only some circuit of existing junction box for solar cell module, make each terminal box can only control a part of circuit of an assembly module or an assembly module, also promptly a photovoltaic module needs a plurality of terminal boxes simultaneously, so when photovoltaic module is used for photovoltaic system, in installation process, need a large amount of cable and artificial.

In addition, existing terminal box all is that bypass diode is directly installed on the conducting strip or junction block of box body inside, because what terminal box was inner and bypass diode directly contacts all is the bad medium of heat conduction, so the heat that produces during diode operation is difficult to shed, cause the bypass diode junction temperature too high, the possibility that the life-span of shortening bypass diode, increase bypass diode lost efficacy has also increased the risk that terminal box, assembly damage simultaneously.In order to solve above-mentioned heat dissipation problem, existing solution is that still, the problem of doing existence like this is: at first, heat sink size is subjected to the restriction in terminal box space at the inner radiator that directly increases of terminal box; Secondly, radiator can not pass to heat outside the terminal box, so radiating effect is limited, long-term use also has the risk of thermal accumlation, has also increased the cost of terminal box simultaneously.

In addition, the box body of existing terminal box separates with the connector of cable link, for the reliability that the connector that increases between the assembly connects, making needs many costs to install manually by interconnective cable between the terminal box that need fix each photovoltaic module when installing in system.

The utility model content

In view of the above-mentioned shortcoming of prior art, the purpose of this utility model is, improves the heat dispersion of terminal box, reduces the number of assembling steps of terminal box, the operating efficiency when the raising system installs.

For realizing the purpose of this utility model, the utility model provides a kind of integral type injection moulding terminal box, comprise lid, box body, diode, conducting strip and cable, described diode is welded on the described conducting strip, and is bundled together with the plastic cement injection molding way with described conducting strip; Described cable is connected the binding post place of described conducting strip, uses plastic cement injection molding way and described box body one-body molded once more with described conducting strip of being bundled together and diode, and is formed in the described box body.

As preferably, described diode is welded on the close middle position of described conducting strip.

As preferably, described integral type injection moulding terminal box also comprises the protective casing that is socketed in described cable junction.

As preferably, described integral type injection moulding terminal box also comprises connection chamber, and the binding post of described conducting strip is formed in the described connection chamber.

As further preferred, described lid buckle closure is on described connection chamber.

As preferably, the part of described conducting strip is stretched out outside the plastic cement of described parcel conducting strip and diode.

As preferably, the plastic cement of described parcel diode, conducting strip and cable extends on the described a part of conducting strip that stretches out outside the plastic cement of parcel conducting strip and diode.

As preferably, described conducting strip is a conductive copper sheet.

As preferably, described cable is the junction that is connected described conducting strip by riveted way.Integral type injection moulding terminal box of the present utility model is wrapped in box body inside with diode and conducting strip, and diode closely contacts with plastics with conducting strip, can dispel the heat by plastics, has promoted heat dispersion.In addition, cable also is wrapped in the box body, does not need stube cable line separately when installing in system, has improved operating efficiency, has saved the consumption of material.

Description of drawings

Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the integral type injection moulding terminal box of the utility model embodiment;

Fig. 2 is the schematic side view of the integral type injection moulding terminal box of the utility model embodiment;

Fig. 3 is welded on schematic diagram on the conducting strip for diode;

Fig. 4 is the schematic diagram that diode and conducting strip are bundled together;

Fig. 5 is connected the schematic diagram on the binding post of conducting strip for cable;

Fig. 6 is cable, diode and conducting strip and the integrated schematic diagram of box body.

Embodiment

Describe integral type injection moulding terminal box of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the stereochemical structure exploded view of the integral type injection moulding terminal box of the utility model embodiment, and Fig. 2 is the schematic side view of the integral type injection moulding terminal box of the utility model embodiment.As depicted in figs. 1 and 2, the integral type injection moulding terminal box of the utility model embodiment comprises: lid 1, box body 2, diode 3, conducting strip 4 and cable 5, in the product of reality, diode 3, conducting strip 4 and cable 5 are one injection moulding and the inside that is formed at box body 2 with box body 2, only for conveniently understanding the STRUCTURE DECOMPOSITION schematic diagram that the utility model content provides, purpose does not limit the version of terminal box of the present utility model herein.

Wherein, diode 3 is welded on the conducting strip 4, is bundled together by the integrated through injection molding moulding with conducting strip 4 usefulness plastic cement; Cable 5 is connected on the binding post 41 of conducting strip 4 (as shown in Figure 5), further be bundled together with diode 3 of being bundled together and conducting strip 4, form the connection chamber 7 that the busbar of photovoltaic module is connected with the binding post 41 of conducting strip 4 simultaneously with the mode of plastic cement injection mo(u)lding.Conducting strip 4 can be conductive copper sheet, also can be other conductivity and thermal diffusivity preferred metal, as silver etc.

Under the situation that does not increase the plastic cement area, diode 3 can be welded on the position of conducting strip 4 more close central authorities, to obtain better radiating effect.As shown in Figure 3, be welded on schematic diagram on the conducting strip 4 for diode 3.In the present embodiment, diode 3 is by SMT (Surface Mounted Technology, the surface patch technology) Han Jie mode is welded on the conducting strip 4, it will be understood by those skilled in the art that also can be according to the type difference of using diode, and uses different solder technology, for example, when using DIP (Dual ln-line Package, dual in-line package) device, use the wave-soldering solder technology to weld.

Fig. 4 is the schematic diagram that diode 3 and conducting strip 4 are bundled together.As shown in Figure 4, the part of conducting strip 4 (being binding post 41 parts) is stretched out outside the plastic cement of parcel diode 3 behind integral molded plastic and conducting strip 4.

Fig. 5 is connected the schematic diagram on the binding post 41 in two outsides of conducting strip 4 for cable 5.In the present embodiment, cable 5 is to be connected on the binding post 41 of conducting strip 4, to obtain preferable bonding strength and sealing property by riveted way.It will be understood by those skilled in the art that the connected mode that also can adopt other, with mode such as crimping cable 5 is fixedlyed connected with binding post 41 as welding.

In addition, preferred, can connect protective casing 6 at the wiring place cover of cable 5, to improve the waterproof sealing and the withdrawal force of cable 5, improve the effect of the damp proof electric leakage of terminal box.

Fig. 6 is cable 5, diode 3 and conducting strip 4 and box body 2 integrated schematic diagrames, as shown in Figure 6, when cable 5, diode 3 and conducting strip 4 further are bundled together by the integrated through injection molding moulding with plastic cement, form connection chamber 7, make cable 5 go deep in the encapsulating district of connection chamber 7, to guarantee sealing, simultaneously, plastic layer can be extended on a part of conducting strip 4 that stretches out outside the plastic cement that diode 3 and conducting strip 4 are bundled together, to prolong insulation distance.

When terminal box is connected with photovoltaic module, earlier the busbar of photovoltaic module is connected in connection chamber 7 with binding post 41 on the conducting strip 4, for example connect by welding or other connected modes, then with connection chamber 7 sealant pouring and sealings, at last with lid 1 buckle closure on connection chamber 7.

Integral type injection moulding terminal box of the present utility model is wrapped in box body inside with diode and conducting strip, and diode closely contacts with plastics with conducting strip, can dispel the heat by plastics, has promoted heat dispersion.In addition, cable also is wrapped in the box body, does not need stube cable line separately when installing in system, has improved operating efficiency.

The above is an exemplary embodiment of the present utility model only, is not used in restriction the utility model, and protection range of the present utility model is limited by additional claims.In essence of the present utility model and protection range, those skilled in the art can make various modifications or be equal to replacement the utility model, this modification or be equal to replacement and also should be considered as dropping in the protection range of the present utility model.

Claims

1. an integral type injection moulding terminal box comprises lid, box body, diode, conducting strip and cable, it is characterized in that described diode is welded on the described conducting strip, and is bundled together with the plastic cement injection molding way with described conducting strip; Described cable is connected the binding post place of described conducting strip, and uses plastic cement injection molding way and described box body one-body molded once more with described conducting strip of being bundled together and diode, and is formed in the described box body.

2. integral type injection moulding terminal box according to claim 1 is characterized in that described diode is welded on the middle position of described conducting strip.

3. integral type injection moulding terminal box according to claim 1 is characterized in that, described integral type injection moulding terminal box also comprises the protective casing that is socketed in described cable junction.

4. integral type injection moulding terminal box according to claim 1 is characterized in that, described integral type injection moulding terminal box also comprises connection chamber, and the binding post of described conducting strip is formed in the described connection chamber.

5. integral type injection moulding terminal box according to claim 4 is characterized in that described lid buckle closure is on described connection chamber.

6. integral type injection moulding terminal box according to claim 1 is characterized in that the part of described conducting strip is stretched out outside the plastic cement of described parcel conducting strip and diode.

7. according to claim 1 or 6 described integral type injection moulding terminal boxes, it is characterized in that the plastic cement of described parcel diode, conducting strip and cable extends on the described a part of conducting strip that stretches out outside the plastic cement of parcel conducting strip and diode.

8. integral type injection moulding terminal box according to claim 1 is characterized in that described conducting strip is a conductive copper sheet.

9. integral type injection moulding terminal box according to claim 1 is characterized in that, described cable is the junction that is connected described conducting strip by riveted way.