CN203165917U

CN203165917U - Solar energy junction box

Info

Publication number: CN203165917U
Application number: CN2012206919779U
Authority: CN
Inventors: 陈泽鹏
Original assignee: DONGGUAN ZERUN ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: DONGGUAN ZERUN ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2013-08-28
Anticipated expiration: 2022-12-14

Abstract

A solar energy junction box comprises a box body, a bottom cover, a surface cover, a terminal and a waterproof sheath. The surface cover is buckled above the box body. The terminal is arranged in the box body. The bottom cover is fixed on a bottom of the box body. The box body comprises a base portion and an accommodation portion integrally formed on the base portion. The base portion is provided with a first accommodation space whose opening faces the surface cover. An upper end surface of the base portion is provided with a ventilation groove which is connected with the first accommodation space. The surface cover comprises a cover plate and a cover ring integrally formed on the cover plate. The waterproof sheath is sleeved on the cover ring. The cover ring is inserted into the first accommodation space. The waterproof sheath is accommodated below the ventilation groove and elastically abuts against the box body. When air in the box is expanded, front and rear ends of the surface cover are pushed and moved upwardly and the waterproof sheath is moved upwardly so that the ventilation groove is communicated with the space in the box body of the solar energy junction box, and heat generated by a diode during working and the expanded air are emitted to an external portion of the junction box. A service life of the junction box is prolonged. Moisture-proof and waterproof effects are good.

Description

Solar junction box

Technical field

The utility model relates to a kind of terminal box, especially relates to a kind of solar junction box.

Background technology

At present, the heliotechnics development is rapid, and solar junction box is widely used in the connection in the various sun-generated electric power devices as the critical piece of sun-generated electric power.

Along with science and technology is constantly progressive, electrical connection to solar module requires also more and more higher, the internal heat dissipating problem of solar junction box is one of major consideration of its design always, at present, the case material of the used terminal box of the housing of the used terminal box of solar power system generally uses engineering plastics to make on the market, connected mode between the conductor mainly is contact, terminal box in working order down, the diode of enclosure interior can produce a large amount of heat energy, heat is passed to housing by air transmitted in the housing and convection current, housing discharges heat by conduction again, but because the poor thermal conductivity of air and plastics, heat in the housing can not in time discharge, caused the temperature in the housing constantly to raise, made the diode to be in for a long time to work under the high temperature and reduced useful life, excessive temperature very easily causes the solar junction box distortion simultaneously, accelerate the aging of housing, shortened the useful life of product.

In order to address the above problem, directly increase radiator or connector cover in the existing solar junction box and offer air-vent to help the electric elements heat radiation, but the problem of Cun Zaiing is exactly like this, 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 increased the cost of terminal box simultaneously.Offer air-vent to help the electric elements heat radiation, influence its running in order to avoid cause the heat concentrations, although some lid can play thermolysis, how out of doors solar junction box, therefore its good waterproof effect is but very low, is easy to cause the whole damage of solar junction box.

The utility model content

Based on this, be necessary the problem at the existence of above-mentioned background technology, the solar junction box of a kind of protection against the tide, waterproof, good heat dissipation effect is provided.

For achieving the above object, the utility model discloses a kind of solar junction box and comprise box body, bottom, cover, binding post and waterproof jacket, described cover is fastened on the top of box body, described binding post is installed in the box body, described bottom is fixed in described box body bottom, described box body comprises base portion and is shaped in resettlement section on the base portion, described base portion offers an opening towards first receiving space of described cover, the base portion upper surface offers the air channel that is connected with first receiving space, described cover comprises a cover plate and is shaped in bezel ring, on the cover plate, waterproof jacket is sheathed on the bezel ring,, described bezel ring, stretches in first receiving space, and waterproof is placed in and is placed in air channel below in first receiving space and elasticity is resisted against on the box body.

Therein among embodiment, the two ends of described base portion upper surface offer a groove respectively, outwards convex with a fixture block on the groove cell wall, the lateral surface on fixture block top outwards convexes with buckle, the both sides of described cover plate offer a stopper slot respectively, the cell wall of stopper slot convexes with a fixture block in stopper slot, described buckle is fastened on the described fixture block.

Among embodiment, described resettlement section is provided with an opening towards second receiving space of described bottom therein, and described binding post two ends are contained in respectively in second receiving space and first receiving space,

Among embodiment, be arranged with shell fragment on the described binding post therein, described shell fragment is contained in first receiving space.

Therein among embodiment, spacer in described first receiving space.

Among embodiment, the two ends, lower surface at rear portion, described resettlement section offer storage tank therein, and the two ends of described bottom are respectively equipped with a projection that is complementary with described storage tank, and described projection is arranged in the described storage tank.

Therein among embodiment, described storage tank bottom land wall offers first holding hole, described projection is provided with second holding hole that is complementary with described first holding hole, and described first holding hole and second holding hole are combined to form the solidus hole of fixing described cable.

In sum, the utility model solar junction box offers the air channel that is connected with first receiving space by the box body upper surface, and during assembling, bezel ring, stretches in first receiving space, and the waterproof jacket position is placed in the air channel below and elasticity is resisted against on the box body.When air in the box expands, replacing the cover rear and front end upwards moves, waterproof jacket also upwards moves, make air channel be connected with the interior space of the box of solar junction box, gas after the heat that produces when making diode operation and the expansion is dispersed into described terminal box outside, prolongs the useful life of described terminal box, moistureproof, good water-proof effect, simple in structure, save cost.

Description of drawings

Fig. 1 is the structural representation of the utility model solar junction box.

Fig. 2 is the exploded view of solar junction box shown in Figure 1.

Fig. 3 is the box body structure schematic diagram of solar junction box.

Fig. 4 is the cut-away view of solar junction box shown in Figure 1.

Embodiment

For further understanding feature of the present utility model, technological means and the specific purposes that reach, function, below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

As depicted in figs. 1 and 2, the utility model solar junction box comprises box body 10, cover 20, bottom 30, waterproof jacket 40 and binding post 50, described cover 20 is fastened on the top of box body 10, described binding post 50 is installed in the box body 10, and described bottom 30 adopts the ultrasonic bonding mode to be fixed in described box body 10 bottoms.

Fig. 2, Fig. 3 and shown in Figure 4, described box body 10 comprises base portion 11 and is shaped in resettlement section 12 on the base portion 11, described resettlement section 12 is provided with an opening towards second receiving space 121 of described bottom 30, described base portion 11 offers an opening towards first receiving space 111 of described cover 20, second receiving space 111 and first receiving space 121 are connected, described binding post 50 is installed in the box body 10, be provided with several diodes 60 between the described binding post 50, diode 60 is placed in second receiving space 121.During assembling, to second receiving space 121 perfusion casting glues, described diode 60 and binding post 50 form integrative-structure by casting glue, and fill with casting glue in the space around the diode 60, both can heat conduction, also have excellent waterproof and dustproof effect.

Described binding post 50 two ends are contained in respectively in second receiving space 121 and first receiving space 111, be arranged with shell fragment 70 on the described binding post 50, the heat that is used for compressing the solar junction box assembly and diode 60 is sent carries out heat conduction, and described shell fragment 70 is contained in first receiving space 111.Be provided with the spacer 115 that binding post 50 is isolated in described first receiving space 111.Two binding posts 50 near described housing 10 outsides in the described binding post 50 connect a cable 80 respectively.

The two ends, lower surface at 12 rear portions, described resettlement section offer storage tank 122, and the two ends of described bottom 30 are respectively equipped with a projection 31 that is complementary with described storage tank 122, and described projection 31 is arranged in the described storage tank 122.Described storage tank 122 bottom land walls offer first holding hole 123, described projection 31 is provided with second holding hole 311 that is complementary with described first holding hole 123, described first holding hole 123 and second holding hole 311 are combined to form the solidus hole (figure is mark not) of fixing described cable 80, and described cable 80 is drawn by described solidus hole.

The two ends of described base portion 11 upper surfaces offer a groove 112 respectively, outwards convex with a fixture block 113 on groove 112 cell walls, and the lateral surface on fixture block 113 tops outwards convexes with buckle 114.Described cover 20 comprises a cover plate 21 and is shaped in bezel ring, 22 on the cover plate 21, the both sides of described cover plate 21 offer a stopper slot 211 respectively, the cell wall of stopper slot 211 convexes with a fixture block 212 in stopper slot 211, when described cover 20 is fastened on the described box body 10, bezel ring, 22 stretches in first receiving space 111, described buckle 114 is fastened on the described fixture block 212, thereby makes cover plate 21 be covered on securely on the box body 10.

More preferably, middle part, described box body 10 upper surfaces offers the air channel 116 that is connected with first receiving space 111, bezel ring, 22 lateral surfaces of described cover 30 are equipped with draw-in groove 221, described waterproof jacket 40 in the form of a ring, waterproof jacket 40 is sheathed in the draw-in groove 221 of bezel ring, 22, during assembling, bezel ring, 22 stretches in first receiving space 111, waterproof jacket 40 is placed in air channel 116 belows in first receiving space 111 and elasticity is resisted against on the box body 10, guarantees the solar junction box good airproof performance, and is waterproof and dampproof.

When solar junction box is in running order, solar junction box snugly is installed on the installed surface of solar energy installation component, make binding post 50 be in closed state, when the diode adstante febre, pair of wire connection terminals 50 is carried out heat transmission, when binding post 50 temperature are too high, make the interior air of box expand, whole terminal box inwall is applied bigger air pressure, when air pressure reaches certain value, replacing cover 20 rear and front ends upwards moves, waterproof jacket 40 also upwards moves, make that the space is connected in the box of air channel 116 and solar junction box, thus the heat that produces when making diode 60 work and expand after gas be dispersed into described terminal box outside, prolong the useful life of described terminal box.When temperature in the solar junction box box descended, the box internal gas pressure reduced, and under the replacing of air pressure, cover 20 is got back to original position outside box.

Solar junction box assembling process of the present utility model is as follows:

At first, cable 80 is connected on the described binding post 50, more described diode 60 is welded between the described binding post 50, and described binding post 50 and diode 60 are placed in the described box body 10; Take second place, fill casting glue in described second receiving space 121 and form the encapsulating district; Then, adopt ultrasonic welding process with described bottom 30 weldings on described box body 10; At last described cover 20 is loaded onto water proof ring 40, and cover 20 is covered on the box body 10.

In sum, the utility model solar junction box offers the air channel 116 that is connected with first receiving space 111 by box body 10 upper surfaces, during assembling, bezel ring, 22 stretches in first receiving space 111, and waterproof jacket 40 is placed in air channel 10 belows and elasticity is resisted against on the box body 10.When air in the box expands, replacing cover 20 rear and front ends upwards moves, waterproof jacket 40 also upwards moves, make air channel 116 be connected with the interior space of the box of solar junction box, the heat that produces when making diode 60 work and the gas after the expansion are dispersed into described terminal box outside, prolong the useful life of described terminal box, moistureproof, good water-proof effect, simple in structure, save cost.

The above embodiment has only expressed part execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with claims.

Claims

1. solar junction box, comprise box body, cover, bottom, waterproof jacket and binding post, described cover is fastened on the top of box body, described binding post is installed in the box body, described bottom is fixed in described box body bottom, it is characterized in that: described box body comprises base portion and is shaped in resettlement section on the base portion, described base portion offers an opening towards first receiving space of described cover, the base portion upper surface offers the air channel that is connected with first receiving space, described cover comprises a cover plate and is shaped in bezel ring, on the cover plate, described waterproof jacket is sheathed on the bezel ring,, described bezel ring, stretches in first receiving space, and waterproof is placed in and is placed in air channel below in first receiving space and elasticity is resisted against on the box body.

2. solar junction box according to claim 1, it is characterized in that: the two ends of described base portion upper surface offer a groove respectively, outwards convex with a fixture block on the groove cell wall, the lateral surface on fixture block top outwards convexes with buckle, the both sides of described cover plate offer a stopper slot respectively, the cell wall of stopper slot convexes with a fixture block in stopper slot, described buckle is fastened on the described fixture block.

3. solar junction box according to claim 1, it is characterized in that: described resettlement section is provided with an opening towards second receiving space of described bottom, and described binding post two ends are contained in respectively in second receiving space and first receiving space.

4. solar junction box according to claim 3, it is characterized in that: be arranged with shell fragment on the described binding post, described shell fragment is contained in first receiving space.

5. solar junction box according to claim 4 is characterized in that: be provided with spacer in described first receiving space.

6. solar junction box according to claim 1, it is characterized in that: the two ends, lower surface at rear portion, described resettlement section offer storage tank, the two ends of described bottom are respectively equipped with a projection that is complementary with described storage tank, and described projection is arranged in the described storage tank.

7. solar junction box according to claim 6, it is characterized in that: described storage tank bottom land wall offers first holding hole, described projection is provided with second holding hole that is complementary with described first holding hole, and described first holding hole and second holding hole are combined to form the solidus hole of attached cable line.