CN209233787U - A kind of photovoltaic junction box - Google Patents

Abstract

A kind of photovoltaic junction box, including box body, it is arranged in the intracorporal metallic support of box and diode, sealant is perfused in the box body, the side of the metallic support is downwardly extending skirt, and the diode is arranged in the side of the metallic support and is welded and fixed with the skirt.The utility model provides a kind of photovoltaic junction box of brand new, diode is subjected to side installation, so that the upper surface of diode is flushed with the upper surface of metallic support substantially, to reduce the intracorporal encapsulating amount of box, production cost is effectively reduced, while reducing the contact area of diode and metallic support, increase effective heat dissipation area of diode entirety, the heat-sinking capability for reinforcing diode, is effectively reduced temperature when use, extends whole service life.

Description

A kind of photovoltaic junction box

Technical field

The utility model relates to photovoltaic accessories field, especially a kind of photovoltaic junction box.

Background technique

Inexhaustible solar energy increasingly has been favored by people because of its safe, clean, environmental protection. Solar photovoltaic industry becomes the rising industry that the whole world is competitively chased, and in China, more and more enterprises are added to this " day by day Enterprise ", China have become the third-largest photovoltaic manufacture base in the whole world, are only second to Japan, Germany.Meanwhile it also promoting too The development of positive energy related components industry, such as photovoltaic terminal box, photovoltaic connector, controller, inverter, battery Deng.

An important component of the photovoltaic terminal box as solar cell module, is between solar cell module Connector between the solar cell array and rechargeable solar battery control device of composition is collection an electrical design, machine The cross-cutting comprehensive design that tool design and material science combine provides the combination connection of solar panel for user Scheme.

Photovoltaic junction box is divided into integral type terminal box and Split type connecting box, and when use is required to be fixed on photovoltaic module On, most conventional way is that sealant is injected in terminal box, plays the role of sealing and fixing.Diode is photovoltaic wiring Core component in box, for doing the electronic component of unidirectional current conducting.It is well known that sealing and heat dissipation are two opposite Extremely, same in photovoltaic junction box, therefore diode is one of the component most easily to generate heat in entire photovoltaic system, according to reality Feedback after the use of border, diode is also the component of most easy burn-out simultaneously, since photovoltaic junction box is fixed on the back of photovoltaic module Face, diode itself related can burn out photovoltaic junction box and part photovoltaic module while damage, cause biggish loss.

The diode applied in existing photovoltaic junction box is all into flat, and when production is directly welded at metallic support On upper surface, there are the main defects of following two for this structure: 1, the lower end surface for being exactly diode and metallic support are apart from mistake Closely, the heat-sinking capability of diode is caused to decline, box body temperature distortion, service life decaying；2, glue surface will be more than when sealant pouring and sealing Diode, the height of the height of diode well beyond metallic support needs so that whole encapsulating height increases in existing structure More encapsulating amounts, lead to cost increase.

Utility model content

In order to overcome the above-mentioned deficiency of the prior art, the utility model provides a kind of photovoltaic junction box.

The technical scheme in the invention for solving the technical problem is: a kind of photovoltaic junction box, including box body, setting are in box Intracorporal metallic support and diode are perfused with sealant in the box body, and the side of the metallic support extends downwardly shape At skirt, the diode is arranged in the side of the metallic support and is welded and fixed with the skirt.

Preferably, the metallic support is divided into left half-court and right half-court, the side of the left half-court extends downwardly shape At left skirt, the side of the right half-court is downwardly extending right skirt, is formed with peace between the left skirt and right skirt Gap is filled, the diode is mounted in the installation gap, the pin of described diode one end and the left skirt It is welded and fixed, the pin of the other end is welded and fixed with the right skirt.

Preferably, the box body includes pedestal, lid and tension disc, the cover cap is located at the pedestal On, the tension disc is connect with the lower end of the pedestal, and the outside of the pedestal is equipped with upper wire bushing, the tension disc it is outer Side is equipped with lower wire bushing, and the upper wire bushing and lower wire bushing fasten to form complete wire bushing.

Preferably, the box body is made of plastics, the box body is equipped with opening close to the side wall of diode, also wraps A metal insert is included, forms integral structure in the metal insert insertion opening and with the box body.

Preferably, the two sides of the opening offer slot, the both ends of the metal insert are inserted into the slot In；

The bottom of the opening offers locating slot, and the first lock, the metal insert are convexly equipped in the locating slot Inner wall on be convexly equipped with the second lock, first lock is latched with second mutually to be fastened and locks.

Preferably, the diode is axial chip diode.

The utility model has the beneficial effects that: 1, provide a kind of photovoltaic junction box of brand new, by diode into Row side installation, so that the upper surface of diode is flushed with the upper surface of metallic support substantially, to reduce the intracorporal encapsulating of box Amount, is effectively reduced production cost, while reducing the contact area of diode and metallic support, increases the effective of diode entirety and dissipates Heat area reinforces the heat-sinking capability of diode, and temperature when use is effectively reduced, and extends whole service life；2, close Diode side is especially provided with a part of metal insert as box body, instead of original plastic material shell, Neng Goujia The heat-sinking capability of strong diode side prevents high temperature deformation, and detachable structure is replaced convenient for the maintenance in later period.

Detailed description of the invention

Fig. 1 is the explosive view of the utility model.

Fig. 2 is the schematic diagram of internal structure after the utility model assembly.

Fig. 3 is the structural schematic diagram of metallic support and diode in the utility model.

Fig. 4 is that metal insert is assembled to the structural schematic diagram in box body in the utility model.

Fig. 5 is the perspective view of the explosion of metal insert and box body in the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

Referring to Fig.1~Fig. 5, a kind of photovoltaic junction box, including box body 1, the metallic support being arranged in box body 12 and two poles Pipe 3, is perfused with sealant in the box body 1, and the side of the metallic support 2 is downwardly extending skirt, and described two Pole pipe 3 is arranged in the side of the metallic support 2 and is welded and fixed with the skirt.

Preferably, the metallic support 2 divides for left half-court 4 and right half-court 5, and the side of the left half-court 4 extends downwardly Left skirt 6 is formed, the side of the right half-court 5 is downwardly extending right skirt 7, shape between the left skirt 6 and right skirt 7 At there is an installation gap, the diode 3 is mounted in the installation gap, the pin of described 3 one end of diode with it is described Left skirt 6 be welded and fixed, the pin of the other end is welded and fixed with the right skirt 7.The preferred embodiment is to metallic support 2 Structure has carried out special design, so that it is formed with left skirt 6 and right skirt 7 for being connected and fixed diode 3, in left skirt Also there are the installation gaps being consistent with 3 size of diode between side 6 and right skirt 7, so that more adduction in overall space layout Reason, after the loading of diode 3, the upper surface of diode 3 is flushed with the upper surface of metallic support 2 substantially, to reduce encapsulating Highly, encapsulating amount is effectively reduced, production cost can be greatlyd save.

In the present embodiment, the box body 1 is made of plastics, and the box body 1 is equipped with opening close to the side wall of diode 3 14, further include a metal insert 15, forms integral structure in 15 insertion opening 14 of metal insert and with the box body 1.It is excellent Choosing, the two sides of the opening 14 offer slot 16, and the both ends of the metal insert 15 are inserted into the slot 16；Institute The bottom for stating opening 14 offers locating slot 17, and the first lock 18, the metal insert 15 are convexly equipped in the locating slot 17 Inner wall on be convexly equipped with the second lock 19, first lock 18 latches 19 with second and mutually fastens and lock.The present embodiment A kind of box body 1 of special construction is provided, is especially being provided with one of metal insert 15 as box body 1 close to 3 side of diode Part can reinforce the heat-sinking capability of 3 side of diode instead of original plastic material shell, prevent high temperature deformation, and Detachable structure is replaced convenient for the maintenance in later period.

Since diode 3 needs laterally to assemble, it is therefore preferred that the diode 3 is axial chip diode 3, in order to be welded and fixed between diode 3 and metallic support 2.

The phenomenon that being easy to happen bending at cable access box body 1 causes to rupture, and then influences normally making for cable With；And the connection of existing cable and terminal box mostly uses ultrasonic bonding, this mode can also damage cable, Defect rate is caused to rise.In the present embodiment, the box body 1 includes pedestal 8, lid 9 and tension disc 10, and the lid 9 covers It is located on the pedestal 8, the tension disc 10 is connect with the lower end of the pedestal 8, and the outside of the pedestal 8 is equipped with upper shield Line set 11, the outside of the tension disc 10 are equipped with lower wire bushing 12, and the upper wire bushing 11 and lower wire bushing 12, which fasten, to be formed Complete wire bushing 13.Electricity can be prevented by the cooperation of upper wire bushing 11 and lower wire bushing 12 using the structure of the present embodiment Excessive bending when cable accesses, and while dismounting, is more convenient, when production, will not damage cable, more environmentally-friendly peace Entirely, and ensure the normal use of cable.

The utility model provides a kind of photovoltaic junction box of brand new, to the interior layout of conventional photovoltaic terminal box It optimizes, forms completely new structure, diode 3 is specifically subjected to side installation, so that the upper surface of diode 3 is basic It is flushed with the upper surface of metallic support 2, to reduce the encapsulating amount in box body 1, production cost is effectively reduced, while reducing by two poles The contact area of pipe 3 and metallic support 2 increases the whole effective heat dissipation area of diode 3, reinforces the heat-sinking capability of diode 3, Temperature when use is effectively reduced, extends whole service life.

Claims (6)

1. a kind of photovoltaic junction box, including box body, the setting perfusion in the intracorporal metallic support of box and diode, the box body There is sealant, it is characterised in that: the side of the metallic support is downwardly extending skirt, and the diode is arranged in the gold Belong to the side of bracket and is welded and fixed with the skirt.

2. photovoltaic junction box according to claim 1, it is characterised in that: the metallic support is divided into left half-court and right half Area, the side of the left half-court are downwardly extending left skirt, and the side of the right half-court is downwardly extending right skirt, described Left skirt and right skirt between be formed with installation gap, the diode is mounted in the installation gap, described two The pin of pole pipe one end is welded and fixed with the left skirt, and the pin of the other end is welded and fixed with the right skirt.

3. photovoltaic junction box according to claim 1, it is characterised in that: the box body includes pedestal, lid and crimping Plate, the cover cap are located on the pedestal, and the tension disc is connect with the lower end of the pedestal, outside the pedestal Side is equipped with upper wire bushing, and the outside of the tension disc is equipped with lower wire bushing, and the upper wire bushing fastens to be formed with lower wire bushing Complete wire bushing.

4. photovoltaic junction box according to claim 1, it is characterised in that: the box body is made of plastics, the box body Close to diode side wall be equipped with opening, further include a metal insert, in the metal insert insertion opening and with the box The bodily form is into a single integrated structure.

5. photovoltaic junction box according to claim 4, it is characterised in that: the two sides of the opening offer slot, described The both ends of metal insert are inserted into the slot；

The bottom of the opening offers locating slot, is convexly equipped with the first lock in the locating slot, the metal insert it is interior The second lock is convexly equipped on wall, first lock is mutually fastened and locked with the second lock.

6. -5 any photovoltaic junction box according to claim 1, it is characterised in that: the diode is axial patch Formula diode.