CN202307969U

CN202307969U - Solar photovoltaic junction box

Info

Publication number: CN202307969U
Application number: CN2011204303289U
Authority: CN
Inventors: 余尚清; 孙国平
Original assignee: JIANGSU ZHENGKAI ELECTRONIC TECHNOLOGY CO LTD
Current assignee: JIANGSU ZHENGKAI ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2011-11-03
Filing date: 2011-11-03
Publication date: 2012-07-04
Anticipated expiration: 2021-11-03

Abstract

The utility model discloses a solar photovoltaic junction box, belonging to the field of solar photovoltaic power generation equipment, in order to effectively reduce the cable loss of a solar power generation system and increase the conversion efficiency of a solar battery. The solar photovoltaic junction box can achieve the purpose of reducing the inner resistance of the solar photovoltaic junction box, through changing the position of a cable hole of the solar photovoltaic junction box and shortening the length of a connecting cable between the solar photovoltaic junction boxes and enables the connecting cable not to rotate and move up and down through adding ribs on the inner wall of the cable hole, and the solar photovoltaic junction box is more stable in working performance.

Description

A kind of photovoltaic terminal box

Technical field

The utility model relates to a kind of photovoltaic terminal box, belongs to the solar energy power generating apparatus field.

Background technology

The operation principle of at present general solar energy equipment is that the solar panel by solar units carries out opto-electronic conversion with the sunlight that receives; Then through controller for solar with electrical power storage in storage battery, each solar units assembly is in a terminal box, existing photovoltaic terminal box adopts outlet in the same way; Cable needs transition arc when being connected between the terminal box; Increased cable length, the line loss of solar power system increases, and influences the conversion efficiency of solar cell.

The utility model content

To the defective that the above-mentioned background technology exists, the technical problem that the utility model will solve provides a kind of photovoltaic terminal box that reduces line loss.

For solving the problems of the technologies described above, the utility model is achieved through following technical scheme:

A kind of photovoltaic terminal box comprises box body and two wire holes that are positioned on the said box side wall, and said wire hole lays respectively on the relative sidewall of said box body.

Compared with prior art, because of the wire hole of terminal box lays respectively on the relative sidewall of box body, between the terminal box when connecting; Save the transition arc part of stube cable, reduced cable length, saved material cost; Reduce the line loss of system, improved the conversion efficiency of solar cell.

As the improvement of the utility model, be provided with the convex tendon that is interrupted at said box body through-hole wall circumferencial direction, stube cable is compressed in this wire hole, and neither can rotate can not axial endplay, makes photovoltaic terminal box service behaviour more stable.

Description of drawings

Fig. 1 is the front schematic view of the utility model photovoltaic terminal box;

Fig. 2 is the cutaway view along E-E line among Fig. 1;

Fig. 3 is the enlarged drawing of I part among Fig. 2;

Fig. 4 is the cutaway view along F-F line among Fig. 2.

Embodiment

In order to make the technical scheme of the utility model more apparent and understandable, the utility model is further described below in conjunction with accompanying drawing and embodiment.

The stube cable 2 of the utility model photovoltaic terminal box one end shown in Figure 1 is not shown.

When the photovoltaic terminal box of the utility model shown in Figure 1 is connected; Terminal box wire hole 3 perforate directions are consistent with the closure of stube cable 2; Therefore stube cable 2 connects for straight line; The terminal box of prior art homonymy outlet when being connected in series, because of terminal box wire hole perforate direction and cable closure inconsistent, so certainly will there be the transition arc part in stube cable.

For the electrical property that makes the utility model photovoltaic terminal box more stable; Like Fig. 2, shown in Figure 3; On terminal box wire hole 3 inwalls, be provided with the convex tendon 4 that is interrupted; After stube cable 2 inserted photovoltaic terminal box box bodys 1, convex tendon 4 was pushed down stube cable 2, and stube cable 2 neither can be rotated can not axial endplay; As shown in Figure 4, said convex tendon 4 is 4 sections and is uniformly distributed with as symmetry that it is better to stube cable 2 fixed effects on box body wire hole 3 inwall circumferencial directions.

Except that the foregoing description, the utility model can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.

Claims

1. a photovoltaic terminal box comprises box body and two wire holes that are positioned on the said box side wall, and it is characterized in that: said wire hole lays respectively on the relative sidewall of said box body.

2. photovoltaic terminal box as claimed in claim 1 is characterized in that: on said box body wire hole inwall, be provided with the convex tendon that is interrupted.

3. photovoltaic terminal box as claimed in claim 2 is characterized in that: said convex tendon is that four sections and symmetry are uniformly distributed with on wire hole inwall circumferencial direction.