CN204089719U

CN204089719U - Bridge-type heat radiation photovoltaic cell junction box

Info

Publication number: CN204089719U
Application number: CN201420289625.XU
Authority: CN
Inventors: 缪文球
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-03
Filing date: 2014-06-03
Publication date: 2015-01-07
Anticipated expiration: 2024-06-03

Abstract

The utility model relates to a kind of bridge-type heat radiation photovoltaic cell junction box, described terminal box includes the box body be arranged on photovoltaic cell backplane (11), there is in described box body the cavity of an accommodation terminal (5), diode (7) is connected with between terminals of adjacent (5), described terminal (5) is connected with fin (8), this fin (8) is closely inserted in box body, and forms an air channel between the box wall of fin (8) and box body Plug Division and photovoltaic cell backplane (11).A kind of bridge-type heat radiation of the utility model photovoltaic cell junction box, has the feature of excellent radiation performance.

Description

Bridge-type heat radiation photovoltaic cell junction box

Technical field

The utility model relates to a kind of terminal box, especially relates to a kind ofly adopting bridge architecture to carry out the terminal box of dispelling the heat for field of solar energy, belongs to field of photovoltaic technology.

Background technology

At present, in the electric connection technology of solar power system, usual employing solar photovoltaic cell junction box realizes the electrical connection between photovoltaic module and inverter, conventional photovoltaic cell junction box structure is form a conducting terminal installation cavity after upper cartridge body is connected with lower box body, and the conducting terminal with diode is installed in this conducting terminal installation cavity;

Consider the application scenario normally outdoor environment of photovoltaic cell junction box, therefore prevent the media such as rainwater from infiltrating terminal box thus affect the Consideration that inner electrical connection is an outbalance in terminal box design; For this reason in the hermetically-sealed construction of above-mentioned photovoltaic cell junction box, need to adopt the mode of encapsulating in conducting terminal installation cavity to seal, on sealing surface, cover tegillum after sealing again carry out covering and decorating;

Although the requirement of waterproof can be met after adopting above-mentioned hermetically-sealed construction, but because the diode in photovoltaic cell junction box operationally can produce higher temperature, and along with the continuous rising of diode temperature, the impact that resistance in diode wafts due to temperature will constantly increase, diode is impelled to produce more heat further, meanwhile the photovoltaic cell junction box of above-mentioned hermetically-sealed construction dispels the heat by means of only the upper surface of box body, diode in photovoltaic cell junction box conducting terminal installation cavity and metal terminal great majority are placed in conducting terminal installation cavity central authorities, the heat that diode produces all will be transmitted to box body by fluid sealant and then be dispersed in natural air, because medium heat conduction is very poor, conventional photovoltaic cell junction box all exists diode junction temperature height affects the phenomenon that performance even burns photovoltaic cell junction box, simultaneously, because the lower surface of the photovoltaic cell junction box of routine is directly fitted on battery back-sheet, too high temperature even can burn solar cell backboard when dispelling the heat in time, have a strong impact on photovoltaic plant normally to run, hinder the paces that solar panel develops to high-power.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of bridge-type heat radiation photovoltaic cell junction box of excellent radiation performance.

The purpose of this utility model is achieved in that a kind of bridge-type heat radiation photovoltaic cell junction box, and described terminal box includes the box body be arranged on photovoltaic cell backplane, has the cavity of an accommodation terminal, be connected with diode between terminals of adjacent in described box body,

Described terminal is connected with fin, and this fin is closely inserted in box body, and forms an air channel between the box wall of fin and box body Plug Division and photovoltaic cell backplane.

The utility model bridge-type heat radiation photovoltaic cell junction box, described box body is made up of interconnective front box body and rear box body, the cavity holding terminal is formed between the lower end of described front box body and the upper end of rear box body, described fin is inserted in rear box body, and rear box body is horizontal " several " font bridge architecture, fin is inserted to the top in this " several " font bridge architecture, the openend being somebody's turn to do " several " font bridge architecture becomes 90 degree towards with photovoltaic cell backplane, is somebody's turn to do between the bottom surface of " several " font bridge architecture and photovoltaic cell backplane and forms a heat dissipation wind channel.

The utility model bridge-type heat radiation photovoltaic cell junction box, is formed between the lower end of described front box body and the upper end of rear box body on the cavity holding terminal and is coated with a tegillum.

The utility model bridge-type heat radiation photovoltaic cell junction box, described fin is including but not limited to sheet metal.

The utility model bridge-type heat radiation photovoltaic cell junction box, described fin is including but not limited to metal aluminium flake.

Compared with prior art, the beneficial effects of the utility model are:

The design that the utility model is combined with heat dissipation wind channel by fin, the heat that diode is sent can discharge quickly; And the heat dissipation wind channel of bridge architecture design, the high temperature exothermic portion of terminal box is no longer contacted with solar cell backboard, therefore its high temperature can not affect the performance of solar panel, thus while the heat dispersion improving terminal box, also assures that the performance of solar panel.

Accompanying drawing explanation

Fig. 1 is the assembling effect schematic diagram of the utility model bridge-type heat radiation photovoltaic cell junction box.

Fig. 2 is the front view of the utility model bridge-type heat radiation photovoltaic cell junction box.

Fig. 3 is the A-A cutaway view of Fig. 2 of the utility model bridge-type heat radiation photovoltaic cell junction box.

Fig. 4 is the front view of the using state of the utility model bridge-type heat radiation photovoltaic cell junction box.

Wherein:

Tegillum 1, front box body 2, positive terminal 3, anode connector 4, terminal 5, cable 6, diode 7, fin 8, base 9, rear box body 10, photovoltaic cell backplane 11.

Embodiment

See Fig. 1 ~ 4, a kind of bridge-type heat radiation photovoltaic cell junction box that the utility model relates to, described terminal box includes the box body be arranged on photovoltaic cell backplane 11, the cavity in described box body with an accommodation terminal 5 is (preferred, this terminal is installed on base 9), be connected with diode 7(terminal 5 between terminals of adjacent 5 to be serially connected between positive terminal 3 and anode connector 4), and the expansion of terminal 5 extension forms fin 8(fin 8 and terminal 5 can be integral type structure, also can be split type but by welding, riveted joint or carried out the structure that connects by all kinds of mode), described fin 8 is sheet metal, as metal aluminium flake (fin 8 adopts high heat-conducting medium), this fin 8 is closely inserted in box body, and form an air channel between the box wall of fin 8 and box body Plug Division and photovoltaic cell backplane 11 and (thus form a bridge-type structure, turn round and look at this patent and be named as bridge-type heat radiation photovoltaic cell junction box), thin plate-shaped structure is arranged to by the box wall of this box body Plug Division simultaneously, namely its thickness is much smaller than the box wall thickness at other positions of box body, thus after contributing to that the heat on diode 7 is passed to fin 8, heat outwards transmits quickly through box body by fin 8, and can carry out air-cooled fast to heat by the air channel formed between photovoltaic cell backplane 11, better benefit is, the heating part of box body 1 no longer contacts with photovoltaic cell backplane 11, and therefore its high temperature can not produce any harmful effect to photovoltaic cell backplane 11,

See Fig. 1 ~ 4, concretely, box body is made up of interconnective upper cartridge body 2 and rear box body 10, the cavity holding terminal 5 is formed between the lower end of described front box body 2 and the upper end of rear box body 10, this cavity is coated with a tegillum 1, for the decoration after encapsulating, attractive in appearance, described fin 8 is inserted in rear box body 10, and rear box body 10 is in horizontal " several " font bridge architecture, fin 8 is inserted to the top in this " several " font bridge architecture, should " several " font bridge architecture openend towards perpendicular with photovoltaic cell backplane 11 (namely " several " font bridge architecture openend towards with photovoltaic cell backplane 11 one-tenth 90 degree of angles), thus make to form a heat dissipation wind channel between the bottom surface of this " several " font bridge architecture and photovoltaic cell backplane 11, for strengthening cooling effect, certainly, adopt front box body 2 to be connected project organization with the split of rear box body 10 in this optimal enforcement example in institute's act scheme, but in actual application, no matter box body adopt which kind of mode (integrally or split) all this patent protection range within,

In addition: it should be noted that above-mentioned execution mode is only two citings of this patent, any change that those skilled in the art does according to above-mentioned design or improvement, all within the protection range of this patent.

Claims

1. a bridge-type heat radiation photovoltaic cell junction box, described terminal box includes the box body be arranged on photovoltaic cell backplane (11), there is in described box body the cavity of an accommodation terminal (5), be connected with diode (7) between terminals of adjacent (5), it is characterized in that:

Described terminal (5) is connected with fin (8), this fin (8) is closely inserted in box body, and forms an air channel between the box wall of fin (8) and box body Plug Division and photovoltaic cell backplane (11).

2. a kind of bridge-type heat radiation photovoltaic cell junction box as claimed in claim 1, it is characterized in that: described box body is made up of interconnective front box body (2) and rear box body (10), the cavity holding terminal (5) is formed between the lower end of described front box body (2) and the upper end of rear box body (10), described fin (8) is inserted in rear box body (10), and rear box body (10) is in horizontal " several " font bridge architecture, fin (8) is inserted to the top in this " several " font bridge architecture, be somebody's turn to do between the bottom surface of " several " font bridge architecture and photovoltaic cell backplane (11) and form a heat dissipation wind channel.

3. a kind of bridge-type heat radiation photovoltaic cell junction box as claimed in claim 2, is characterized in that: formed between the lower end of described front box body (2) and the upper end of rear box body (10) on the cavity holding terminal (5) and be coated with a tegillum (1).