CN210986041U

CN210986041U - Novel photovoltaic junction box

Info

Publication number: CN210986041U
Application number: CN201921950046.4U
Authority: CN
Inventors: 李霖
Original assignee: Jiangsu Haitian Microelectronics Corp
Current assignee: Jiangsu Haitian Microelectronics Corp
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-10
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a novel photovoltaic junction box, which comprises a box body, a box cover and a cover closing device; a box body: the bottom end of the box body is provided with a mounting hole, three groups of terminal mounting seats are parallelly mounted in the box body, a heat insulation plate is connected between every two adjacent terminal mounting seats, a wiring terminal is mounted in each terminal mounting seat, a diode is connected between every two adjacent wiring terminals, the diode is positioned between every two heat insulation plates, the end parts of the two wiring terminals on two sides are connected with conductive columns, the conductive columns are connected with waterproof joints, and the waterproof joints are mounted on the front side face of the box body; a box cover: the bottom of lid corresponds position department with the diode and installs the rectangle butt joint bounding wall, rectangle butt joint bounding wall and heat insulating board contact, the utility model provides a novel photovoltaic terminal box can dispel the heat to the diode by the efficient, protects binding post normal work effectively, improves photovoltaic terminal box's life.

Description

Novel photovoltaic junction box

Technical Field

The utility model relates to a photovoltaic technology field specifically is a novel photovoltaic terminal box.

Background

The photovoltaic junction box is a connecting device between a solar cell matrix formed by solar cell components and a solar charging control device, and mainly has the functions of connecting and protecting the solar cell components, connecting the electric power generated by the solar cell with an external circuit and conducting the current generated by the photovoltaic components, the photovoltaic junction box plays an important role in the solar cell components, when the photovoltaic components work normally, the solar cell components shielded in the series branch can be used as loads to consume the energy generated by other solar cell components with illumination, so that the phenomenon that the shielded solar cell components generate heat is called a hot spot effect, the solar cell can be seriously damaged by the hot spot effect, the service life of the solar cell is shortened, in order to solve the problem, a diode is added between two connecting terminals in the traditional photovoltaic junction box to protect the normal operation of the photovoltaic components, however, when the diode works, the diode generates heat seriously, the wiring terminal is easy to burn out, and the internal temperature of the junction box is easy to be overhigh due to the heat generation phenomenon of the diode, so that the service life of the junction box is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a novel photovoltaic terminal box, can dispel the heat to the diode by the efficient, protect binding post normal work effectively, improve the life of photovoltaic terminal box, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel photovoltaic junction box comprises a box body, a box cover and a cover closing device;

a box body: the bottom end of the box body is provided with a mounting hole, three groups of terminal mounting seats are parallelly mounted in the box body, a heat insulation plate is connected between every two adjacent terminal mounting seats, a wiring terminal is mounted in each terminal mounting seat, a diode is connected between every two adjacent wiring terminals, the diode is positioned between every two heat insulation plates, the end parts of the two wiring terminals on two sides are connected with conductive columns, the conductive columns are connected with waterproof joints, and the waterproof joints are mounted on the front side face of the box body;

a box cover: a rectangular butt-joint surrounding plate is arranged at the position, corresponding to the diode, of the bottom end of the box cover and is in contact with the heat insulation plate, a corrugated heat dissipation plate is arranged at the top end of the rectangular butt-joint surrounding plate, and a waterproof breathable film is arranged on the side face of the corrugated heat dissipation plate;

wherein, the box body is connected with the box cover through a cover closing device.

Further, close and cover the device and include screw rod and side post, the side post array is installed on the outer wall of box body, the screw rod runs through the lid to with side post threaded connection, utilize the fixed mode of screw rod, fixed effectual, and convenient to detach.

Further, still include the spring, the spring cup joints the side at the screw rod, and is located between the top of lid and screw rod, utilizes the elasticity of spring, can improve the fixed effect of screw rod.

Further, still include elastic connection area, elastic connection area's one end is connected with the trailing flank of box body, and the other end is connected with the trailing flank of lid, utilizes elastic connection area, can be after opening box body and lid, links together both, avoids appearing losing the phenomenon.

Further, still include the bottom plate, the bottom plate passes through fixing device and installs in the bottom of box body, because the box body need be glued on photovoltaic module with glue, utilizes the bottom plate to carry out the adhesion, is convenient for guarantee the integrality of photovoltaic terminal box, conveniently demolishs the terminal box.

Further, fixing device includes fixed block and L type fixture block, the fixed block array is installed on the bottom plate, and the joint groove has been seted up on the top of fixed block, L type fixture block is installed on the outer wall of box body, and L type fixture block is convenient for dismantle the photovoltaic terminal box through the mode of joint with joint groove joint.

Further, still include sealing rubber pad and backing plate, the bottom at the lid is installed to the backing plate, sealing rubber pad cup joints on the outer wall of backing plate, and the inner wall interference fit of backing plate and box body compresses tightly sealedly through the marginal contact of rubber packing pad with the box body, can effectually prevent that dust and water from getting into inside the box body.

Further, still include welding fastener, welding fastener includes clamp plate, fixture block and telescopic link, the telescopic link is installed at the tip that the terminal mount pad is close to the mounting hole, and compression spring has been cup jointed to the side of telescopic link, the clamp plate is installed at the flexible end of telescopic link, has seted up the through-hole on the clamp plate, the both sides at the clamp plate are installed to the fixture block, set up the draw-in groove that corresponds with the fixture block on the terminal mount pad, draw-in groove and fixture block joint utilize clamp plate extrusion binding post and photovoltaic module's welding position, improve the welding effect of welding department, the normal use of protection terminal box.

Compared with the prior art, the beneficial effects of the utility model are that: this novel photovoltaic terminal box has following benefit:

1. in the aspect of heat dissipation of the diode, the novel photovoltaic junction box adopts an independent cavity structure to isolate the diode into an independent heat dissipation chamber, the corrugated heat dissipation plate is utilized to improve the contact area of the cavity and the outside air, and waterproof and dustproof breathable films are utilized on two sides of the corrugated heat dissipation plate to perform ventilation, so that the heat dissipation efficiency of the diode is improved, and the service life of the whole photovoltaic junction box is prolonged;

2. in the aspect of adhesion of the photovoltaic module and the photovoltaic junction box, the bottom plate at the bottom is used for adhesion, and after the bottom plate is adhered to the photovoltaic junction box, the box body can be detached through the fixing device, so that the photovoltaic junction box can be maintained and replaced conveniently;

3. this neotype photovoltaic terminal box utilizes the mode that spring and screw rod combined together in the aspect of the fixed of box body and lid, improves the compactness of box body and lid to the adaptation is in outdoor adverse circumstances for a long time, and the live time is permanent, and can keep the fastening degree of box body and lid, carries out the pressfitting at photovoltaic module and binding post's welding position simultaneously, the effectual security that improves the connection, prolongs the life of whole terminal box.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of the enlarged structure of the part A of the present invention;

FIG. 4 is a schematic view of the enlarged structure of the part B of the present invention;

FIG. 5 is a schematic cross-sectional view of the C-C plane of the present invention;

fig. 6 is a schematic view of the cross-sectional structure of the D-D surface of the present invention.

In the figure, a box cover 1, a box body 2, a welding and fastening device 3, a pressing plate 31, a clamping block 32, a telescopic rod 33, a fixing device 4, a fixing block 41, a clamping block 42L, a cover closing device 5, a screw 51, a spring 52, a side column 53, a corrugated heat dissipation plate 6, an elastic connecting belt 7, a bottom plate 8, a waterproof joint 9, a rectangular butt-joint enclosing plate 10, a sealing rubber gasket 11, a backing plate 12, a waterproof and breathable film 13, a mounting hole 14, a heat insulation plate 15, a diode 16, a terminal mounting seat 17, a terminal 18 and a conductive column 19 are adopted.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a novel photovoltaic junction box comprises a box body 2, a box cover 1 and a cover closing device 5;

and (3) a box body 2: the bottom end of the box body 2 is provided with a mounting hole 14, the mounting hole 14 is used for the circuit to pass through when the box body 2 is connected with a photovoltaic component, three groups of terminal mounting seats 17 are arranged in parallel in the box body 2, a heat insulation plate 15 is connected between two adjacent terminal mounting seats 17, the heat insulation plate 15 can isolate the heat generated by the diode 16 and prevent the heat from being transferred to the terminal 18, the terminal mounting seats 17 are internally provided with the terminal 18, the diode 16 is connected between two adjacent terminal 18, the diode 16 is positioned between the two heat insulation plates 15, when the hot spot effect occurs, the diode 16 works and can prevent danger, the service life of the whole box body 2 is prolonged, the end parts of the two terminal 18 at two sides are connected with a conductive column 19, the conductive column 19 is connected with a waterproof joint 9, the waterproof joint 9 is arranged on the front side surface of the, the photovoltaic module current conduction device comprises a sealing rubber pad 11 and a backing plate 12, wherein the backing plate 12 is installed at the bottom end of a box cover 1, the sealing rubber pad 11 is sleeved on the outer wall of the backing plate 12, the backing plate 12 is in interference fit with the inner wall of a box body 2, the sealing effect is improved by utilizing the extrusion of the sealing rubber pad 11 and the top end of the box body 2, then the backing plate 12 is in interference fit with the inner wall of the box body 2, so that the connection relation between the box body 2 and the box cover 1 is tight, the photovoltaic module current conduction device further comprises a welding and fastening device 3, the welding and fastening device 3 comprises a pressing plate 31, a clamping block 32 and a telescopic rod 33, the telescopic rod 33 is installed at the end part, close to an installation hole 14, of a terminal installation seat 17, a compression spring is sleeved on the side surface of the telescopic rod 33, the pressing plate 31 is installed at the telescopic end of the, the clamping groove is clamped with the clamping block 32, the telescopic rod 33 can be kept in an extending state under the elastic force action of the compression spring, after the photovoltaic module is welded with the wiring terminal 18, the pressing plate 31 can be used for extruding, the clamping block 32 is clamped with the clamping groove for fixing, and the connection safety of the photovoltaic module and the wiring terminal 18 is improved;

a box cover 1: the bottom end of the box cover 1 is provided with a rectangular butt-joint surrounding plate 10 at a position corresponding to the diode 16, the rectangular butt-joint surrounding plate 10 is in contact with the heat insulation plate 15, a sealed cavity can be formed around the diode 16, heat is prevented from being transferred to the inside of the box body 2, the assembly is burnt, the top end of the rectangular butt-joint surrounding plate 10 is provided with a corrugated heat dissipation plate 6, the corrugated heat dissipation plate 6 is in contact with outside air, the contact area is increased, the heat dissipation efficiency is improved, the side face of the corrugated heat dissipation plate 6 is provided with a waterproof breathable film 13, the waterproof breathable film 13 has a waterproof and dustproof function, heat dissipation treatment can be effectively carried out;

wherein, still include bottom plate 8, bottom plate 8 passes through fixing device 4 and installs the bottom at box body 2, utilize bottom plate 8 and photovoltaic board to adhere, can conveniently dismantle box body 2, use very convenience, fixing device 4 includes fixed block 41 and L type fixture block 42, the fixed block 41 array is installed on bottom plate 8, the joint groove has been seted up on the top of fixed block 41, L type fixture block 42 is installed on the outer wall of box body 2, L type fixture block 42 and joint groove joint, through L type fixture block 42 joint in the joint groove, fix box body 2 on bottom plate 8, then bond bottom plate 8 and photovoltaic module together, can labour saving and time saving dismantle and install box body 2;

wherein, the box body 2 is connected with the box cover 1 through the cover closing device 5, the cover closing device 5 comprises a screw rod 51 and a side column 53, the side column 53 is arranged on the outer wall of the box body 2 in an array manner, the screw rod 51 penetrates through the box cover 1 and is in threaded connection with the side column 53, the box cover 1 and the box body 2 are fixed through the screw rod 51, the fixing degree between the two is tight, the change along with the time lapse or the influence of the external environment is not easy to occur, the service life of the photovoltaic junction box is prolonged, the photovoltaic junction box also comprises a spring 52, the spring 52 is sleeved on the side surface of the screw rod 51 and is positioned between the box cover 1 and the top end of the screw rod 51, the fastening effect of the screw rod 51 can be improved, the photovoltaic junction box further comprises an elastic connecting belt 7, one end of the elastic connecting belt 7 is connected with the rear side surface of the box body 2, the, the box cover 1 does not need to be stored, and the box cover 1 can be prevented from being lost.

When the photovoltaic junction box is used, a photovoltaic component and a junction terminal 18 are welded, then the pressing plate 31 is extruded to drive the telescopic rod 33 to be shortened, the clamping block 32 is clamped in the clamping groove, the L-type clamping block 42 is clamped in the clamping groove in the fixing block 41, the box body 2 is fixed on the bottom plate 8, glue is coated on the back surface of the bottom plate 8 and adhered to the photovoltaic component, pouring sealant is filled in the mounting hole 14, then the box cover 1 and the box body 2 are fastened and sealed together through the screw rod 51, and therefore the whole photovoltaic junction box is mounted, current generated by the photovoltaic component flows through the junction terminal 18, flows through the conductive column 19, enters the waterproof joint 9 and is transmitted to an external connector.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel photovoltaic terminal box which characterized in that: comprises a box body (2), a box cover (1) and a cover closing device (5);

a case (2): the bottom end of the box body (2) is provided with a mounting hole (14), three groups of terminal mounting seats (17) are parallelly mounted in the box body (2), a heat insulation plate (15) is connected between every two adjacent terminal mounting seats (17), a connecting terminal (18) is mounted in each terminal mounting seat (17), a diode (16) is connected between every two adjacent connecting terminals (18), the diode (16) is located between every two heat insulation plates (15), the end parts of the two connecting terminals (18) on the two sides are connected with a conductive column (19), the conductive columns (19) are connected with a waterproof joint (9), and the waterproof joint (9) is mounted on the front side face of the box body (2);

box cover (1): a rectangular butt-joint enclosing plate (10) is arranged at the position, corresponding to the diode (16), of the bottom end of the box cover (1), the rectangular butt-joint enclosing plate (10) is in contact with the heat insulating plate (15), a corrugated heat radiating plate (6) is arranged at the top end of the rectangular butt-joint enclosing plate (10), and a waterproof breathable film (13) is arranged on the side surface of the corrugated heat radiating plate (6);

the box body (2) is connected with the box cover (1) through a cover closing device (5).

2. The novel photovoltaic junction box of claim 1, wherein: the cover closing device (5) comprises a screw rod (51) and side columns (53), the side columns (53) are arranged on the outer wall of the box body (2) in an array mode, and the screw rod (51) penetrates through the box cover (1) and is in threaded connection with the side columns (53).

3. The novel photovoltaic junction box of claim 2, wherein: the box cover further comprises a spring (52), wherein the spring (52) is sleeved on the side face of the screw rod (51) and is located between the box cover (1) and the top end of the screw rod (51).

4. The novel photovoltaic junction box of claim 1, wherein: still include elastic connection area (7), the one end of elastic connection area (7) is connected with the trailing flank of box body (2), and the other end is connected with the trailing flank of lid (1).

5. The novel photovoltaic junction box of claim 1, wherein: the box body is characterized by further comprising a bottom plate (8), wherein the bottom plate (8) is installed at the bottom end of the box body (2) through a fixing device (4).

6. The novel photovoltaic junction box as claimed in claim 5, wherein the fixing device (4) comprises fixing blocks (41) and L-shaped clamping blocks (42), the fixing blocks (41) are mounted on the bottom plate (8) in an array manner, clamping grooves are formed in the top ends of the fixing blocks (41), the L-shaped clamping blocks (42) are mounted on the outer wall of the box body (2), and the L-shaped clamping blocks (42) are clamped with the clamping grooves.

7. The novel photovoltaic junction box of claim 1, wherein: still include sealing rubber pad (11) and backing plate (12), the bottom at lid (1) is installed in backing plate (12), sealing rubber pad (11) cup joints on the outer wall of backing plate (12), and the inner wall interference fit of backing plate (12) and box body (2).

8. The novel photovoltaic junction box of claim 1, wherein: still include welding fastener (3), welding fastener (3) include clamp plate (31), fixture block (32) and telescopic link (33), the tip that is close to mounting hole (14) is installed in terminal mount pad (17) in telescopic link (33), and compression spring has been cup jointed to the side of telescopic link (33), the flexible end at telescopic link (33) is installed in clamp plate (31), has seted up the through-hole on clamp plate (31), the both sides at clamp plate (31) are installed in fixture block (32), set up the draw-in groove that corresponds with fixture block (32) on terminal mount pad (17), draw-in groove and fixture block (32) joint.