CN211701962U - Junction box for photovoltaic power generation - Google Patents

Abstract

The utility model belongs to the technical field of the photovoltaic power generation technique and specifically relates to a junction box for photovoltaic power generation, the power distribution box comprises a box body, one side hinged joint of box has the case lid, the bottom of box is provided with the wiring port, the both sides of box are provided with air inlet mechanism and heat extraction mechanism respectively, heat extraction mechanism includes the exhaust box of vertical fixed mounting on the lateral wall of the box outside, the bottom of exhaust box is uncovered form and internally mounted has second drainage fan the box inner wall fixed mounting that the exhaust box corresponds the position has the induced duct, the inside intercommunication of induced duct and exhaust box, just the inside of induced duct is provided with heat conduction mechanism. The utility model discloses a set up air inlet mechanism, exhaust mechanism, push away fan mechanism heat conduction mechanism can be quick cool down to the box inside, prevent simultaneously through the setting that static device can carry out ground treatment with the produced static of spare part work, avoid static to cause the damage to the spare part.

Description

Junction box for photovoltaic power generation

Technical Field

The utility model relates to a photovoltaic power generation field especially relates to a junction box for photovoltaic power generation.

Background

Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. The solar energy power generation system mainly comprises a solar panel (assembly), a controller and an inverter, and the main components are electronic components. The solar cells are connected in series and then are packaged and protected to form a large-area solar cell module, and then the photovoltaic power generation device is formed by matching with components such as a power controller and the like. The junction box is one of the indispensable devices in the photovoltaic power generation equipment, although the sealing performance of the existing junction box is good, the heat dissipation effect of the existing junction box is also reduced, and therefore the internal parts of the junction box are damaged under the long-time high-temperature work, and the junction box for photovoltaic power generation is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that the radiating effect is poor among the prior art, and the junction box for photovoltaic power generation who provides.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a junction box for photovoltaic power generation comprises a box body, a box cover is hinged on one side of the box body, the bottom of the box body is provided with a wiring port, the two sides of the box body are respectively provided with an air inlet mechanism and a heat exhaust mechanism, the heat exhaust mechanism comprises an exhaust box vertically and fixedly arranged on the side wall of the outer side of the box body, the bottom end of the exhaust box is open and internally provided with a second drainage fan, an air draft tube is fixedly arranged on the inner wall of the box body at the corresponding position of the exhaust box and is communicated with the inside of the exhaust box, and the inside of the induced draft tube is provided with a heat conduction mechanism which comprises a connecting ring in threaded connection with the inner wall of the port of the induced draft tube, the fan comprises an air draft tube, and is characterized in that a connecting disc is arranged in the middle of the inner side of the connecting ring, a plurality of heat conducting fins are connected between the connecting disc and the connecting ring at equal intervals along the circumferential direction, and a fan pushing mechanism is arranged in the air draft tube.

Preferably, the wiring port comprises a wire inlet port installed at one end of the bottom of the box body, and a plurality of wire distributing ports are evenly installed at the bottom of the box body on one side of the wire inlet port.

Preferably, air inlet mechanism includes the air inlet box of fixed mounting on the box lateral wall, communicate each other between air inlet box and the box and be connected with a plurality of induced air pieces from supreme equidistance slope down in intercommunication department the bottom of air inlet box is uncovered form and internally mounted has first drainage fan, first drainage fan and second drainage fan all connect the accumulator jar through the wire, just install temperature detect switch on the wire between first drainage fan and second drainage fan and the accumulator jar, the accumulator jar is with the equal fixed mounting of temperature detect switch on the box inner wall, a plurality of filter screens are installed to the air inlet box inside of first drainage fan top.

Preferably, push away fan constructs including rotating the rotation axis of installing on the connection pad, the fixed cover in the outside of rotation axis has connect the axle sleeve, a plurality of wind-dispelling blades are installed along the circumferencial direction equidistance in the outside of axle sleeve, leave the clearance between wind-dispelling blade and the induced draft tube inner wall.

Preferably, the bottom of the box body is provided with an anti-static device, the anti-static device comprises two T-shaped conductive posts inserted at the bottom of the rear side of the box body, the end parts of the two T-shaped conductive posts outside the box body are jointly connected with a conductive plate, and the middle position of the conductive plate is connected with a grounding wire.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a set up air inlet mechanism to can be with the orderly transport of outside cold wind to the box inside to the spare part processing of cooling down, air inlet mechanism among this technical scheme can filter the moisture in the cold air simultaneously, avoid spare part short circuit phenomenon to appear, and through setting up exhaust mechanism, push away fan mechanism heat conduction mechanism, thereby can discharge the heat of box inside fast, and set up and prevent that electrostatic device can carry out ground connection with the produced static of spare part work and handle, avoid static to cause the damage to spare part.

Drawings

Fig. 1 is a schematic structural view of a junction box for photovoltaic power generation according to the present invention;

fig. 2 is an axial view of a junction box for photovoltaic power generation according to the present invention;

fig. 3 is a cross-sectional view of a junction box for photovoltaic power generation provided by the present invention;

fig. 4 is the utility model provides a heat conduction mechanism schematic diagram of junction box for photovoltaic power generation.

In the figure: the air distribution box comprises a box body 1, a box cover 2, an air inlet box 3, a branching port 4, a grounding wire 5, a T-shaped conductive column 6, an air inlet port 7, a heat conducting sheet 8, an air exhaust box 9, an air draft tube 10, an air draft sheet 11, an air driving blade 12, a first air guide fan 13, a second air guide fan 14, a filter screen 15, a conductive sheet 16, a connecting ring 17, a connecting disc 18, a rotating shaft 19, a shaft sleeve 20, a storage battery 21 and a temperature control switch 22.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

The junction box for photovoltaic power generation shown in fig. 1-4 comprises a box body 1, a box cover 2 is hinged on one side of the box body 1, a wiring port is arranged at the bottom of the box body 1, the wiring port comprises a wire inlet port 7 arranged at one end of the bottom of the box body 1, a plurality of wire branching ports 4 are uniformly arranged at the bottom of the box body 1 at one side of the wire inlet port 7, an air inlet mechanism and a heat exhaust mechanism are respectively arranged at two sides of the box body 1, the heat exhaust mechanism comprises an air exhaust box 9 vertically and fixedly arranged on the side wall of the outer side of the box body 1, the bottom end of the air exhaust box 9 is open and internally provided with a second drainage fan 14, an air induction tube 10 is fixedly arranged on the inner wall of the box body 1 at the corresponding position of the air exhaust box 9, the air induction tube 10 is communicated with the inside of the air exhaust box 9, a heat conduction mechanism is arranged, a connecting disc 18 is arranged in the middle of the inner side of the connecting ring 17, a plurality of heat-conducting fins 8 are connected between the connecting disc 18 and the connecting ring 17 at equal intervals along the circumferential direction, and an air pushing mechanism is arranged in the induced draft tube 10; through setting up induced draft fan 10 to can stabilize the installation with go-between 17, connection pad 18 and a plurality of conducting strip 8, through setting up a plurality of conducting strip 8, thereby can play good heat conduction effect, and can discharge the heat of storage fast on box 1 and the conducting strip 8 through second induced draft fan 14.

The air inlet mechanism comprises an air inlet box 3 fixedly installed on the side wall of the box body 1, the air inlet box 3 is communicated with the box body 1, a plurality of air guide pieces 11 are obliquely connected to the communicated position at equal intervals from bottom to top, the bottom of the air inlet box 3 is open and internally provided with a first drainage fan 13, the first drainage fan 13 and a second drainage fan 14 are connected with a storage battery 21 through leads, temperature control switches 22 are installed on the leads between the first drainage fan 13 and the storage battery 21 and between the second drainage fan 14 and the storage battery 21, the storage battery 21 and the temperature control switches 22 are fixedly installed on the inner wall of the box body 1, and a plurality of filter screens 15 are installed inside the air inlet box 3 above the first drainage fan 13; through setting up incoming line port 7, thereby can be with photovoltaic power generation's transmission of electricity bus cartridge to box 1 inside, and set up branch line port 4 and can pull out the branch cable in order, simultaneously through setting up accumulator jar 21, thereby can supply power to second drainage fan 14 and first drainage fan 13, and set up temperature detect switch 22 and can control first drainage fan 13 and 14 wind speeds of second drainage fan, with this with the orderly transport of outside cold air to box 1 inside processing of cooling down, and can play good induced air direction effect through a plurality of induced air pieces 11, and set up moisture in a plurality of filter screens 15 can filter the cold air, avoid the short circuit phenomenon to appear in the spare part.

The air pushing mechanism comprises a rotating shaft 19 rotatably mounted on the connecting disc 18, a shaft sleeve 20 is fixedly sleeved on the outer side of the rotating shaft 19, a plurality of air driving blades 12 are mounted on the outer side of the shaft sleeve 20 at equal intervals along the circumferential direction, and a gap is reserved between each air driving blade 12 and the inner wall of the induced draft tube 10; the second guide fan 14 can drive the plurality of the wind-driving blades 12 to rotate due to the rapid flow of the hot wind during the air-extracting process, and when the plurality of the wind-driving blades 12 rotate, the flow rate of the hot wind can be further increased.

The bottom of the box body 1 is provided with an anti-static device, the anti-static device comprises two T-shaped conductive columns 6 inserted at the bottom of the rear side of the box body 1, the end parts of the two T-shaped conductive columns 6 at the outer side of the box body 1 are connected with a conductive sheet 16 together, and the middle position of the conductive sheet 16 is connected with a grounding wire 5; through setting up T type and leading electrical pillar 6 to can stabilize the installation with conducting strip 16, simultaneously through setting up earth connection 5, thereby can carry out ground connection processing with the produced static of spare part work, avoid static to cause the damage to spare part.

The utility model discloses: at first through the orderly transport of air inlet mechanism with outside cold wind to 1 inside processing of cooling down of box, simultaneously through exhaust mechanism, push away fan mechanism heat conduction mechanism and discharge 1 inside heat fast of box, and prevent that static device can carry out ground connection with the produced static of spare part work and handle, avoid static to cause the damage to the spare part.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a junction box for photovoltaic power generation, includes box (1), one side hinged joint of box (1) has case lid (2), the bottom of box (1) is provided with the wiring port, its characterized in that, the both sides of box (1) are provided with air inlet mechanism and heat extraction mechanism respectively, heat extraction mechanism includes vertical fixed mounting exhaust box (9) on box (1) outside lateral wall, the bottom of exhaust box (9) is uncovered form and internally mounted has second drainage fan (14), box (1) inner wall fixed mounting that exhaust box (9) correspond the position has induced air duct (10), induced air duct (10) and exhaust box (9) inside intercommunication, just the inside of induced air duct (10) is provided with heat conduction mechanism, heat conduction mechanism includes go-between (17) of threaded connection at induced air duct (10) port inner wall, a connecting disc (18) is arranged in the middle of the inner side of the connecting ring (17), a plurality of heat-conducting fins (8) are connected between the connecting disc (18) and the connecting ring (17) at equal intervals along the circumferential direction, and a fan pushing mechanism is arranged inside the induced draft tube (10).

2. The junction box for photovoltaic power generation as claimed in claim 1, wherein the junction port comprises an inlet port (7) installed at one end of the bottom of the box body (1), and a plurality of branch ports (4) are uniformly installed at the bottom of the box body (1) on one side of the inlet port (7).

3. The junction box for photovoltaic power generation according to claim 1, wherein the air intake mechanism comprises an air intake box (3) fixedly mounted on a side wall of the box body (1), the air inlet box (3) and the box body (1) are communicated with each other, a plurality of air guide pieces (11) are obliquely connected at the communicated position at equal intervals from bottom to top, the bottom of the air inlet box (3) is open and internally provided with a first drainage fan (13), the first drainage fan (13) and the second drainage fan (14) are both connected with a storage battery (21) through leads, temperature control switches (22) are arranged on the leads between the first drainage fan (13) and the second drainage fan (14) and the storage battery (21), the storage battery (21) and the temperature control switch (22) are both fixedly arranged on the inner wall of the box body (1), a plurality of filter screens (15) are arranged inside the air inlet box (3) above the first drainage fan (13).

4. The junction box for photovoltaic power generation as claimed in claim 1, wherein the air pushing mechanism comprises a rotating shaft (19) rotatably mounted on the connecting disc (18), a shaft sleeve (20) is fixedly sleeved on the outer side of the rotating shaft (19), a plurality of air driving blades (12) are mounted on the outer side of the shaft sleeve (20) at equal intervals along the circumferential direction, and a gap is reserved between each air driving blade (12) and the inner wall of the induced draft tube (10).

5. The junction box for photovoltaic power generation as claimed in claim 1, wherein the bottom of the box body (1) is provided with an antistatic device, the antistatic device comprises two T-shaped conductive posts (6) inserted into the bottom of the rear side of the box body (1), the ends of the two T-shaped conductive posts (6) on the outer side of the box body (1) are commonly connected with a conductive sheet (16), and the middle position of the conductive sheet (16) is connected with a grounding wire (5).

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