CN219834088U

CN219834088U - Radiating assembly and photovoltaic junction box thereof

Info

Publication number: CN219834088U
Application number: CN202320145206.8U
Authority: CN
Inventors: 马燕
Original assignee: Individual
Current assignee: Shanghai Jindelian Enterprise Management Partnership LP
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-10-13
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a heat dissipation assembly and a photovoltaic junction box thereof, and relates to the technical field of heat dissipation parts. The heat dissipation assembly is applied to a photovoltaic junction box and comprises at least one heat dissipation pipe, a plurality of heat dissipation barbs are arranged on the outer surface of each heat dissipation pipe, and the heat dissipation barbs are used for increasing the heat dissipation area. And a photovoltaic junction box comprising: the junction box body, the diode, the two heat conduction and electric conduction sheets and at least one heat dissipation assembly. According to the photovoltaic junction box, the heat dissipation area can be greatly increased through the plurality of tubular heat dissipation pipes and the heat dissipation barbs arranged on the surfaces of the heat dissipation pipes, and further, the heat dissipation efficiency of the photovoltaic junction box is improved in a mode of increasing the heat dissipation area. It was verified that the use of current of 20A to 35A was achieved when the photovoltaic junction box using this type of heat sink assembly employed 130 to 180 trench chips.

Description

Radiating assembly and photovoltaic junction box thereof

Technical Field

The utility model relates to the technical field of heat dissipation parts, in particular to a heat dissipation assembly and a photovoltaic junction box thereof.

Background

The photovoltaic junction box is mainly used for connecting and protecting the photovoltaic battery pack, connecting the power generated by the photovoltaic battery pack with an external circuit and conducting the current generated by the photovoltaic battery pack. The photovoltaic battery pack is severely heated and damaged due to shielding under strong light, and some photovoltaic batteries which are loaded due to the fact that the photovoltaic battery pack cannot be illuminated. Therefore, the diode in the photovoltaic junction box is connected with the photovoltaic battery pack in parallel, and when a hot spot effect is generated, current can be output from the diode so as to protect the corresponding photovoltaic battery pack.

However, the diodes in the photovoltaic junction box generate heat, whether they are in bypass operation or reverse cut-off. In particular, as the output current of the high-efficiency component is larger and larger, the heating value of the diode in the photovoltaic junction box during operation is generally larger and larger. How to improve the heat dissipation performance of the photovoltaic junction box and further improve the use current of the photovoltaic junction box is a technical problem to be solved in the industry.

Disclosure of Invention

The utility model aims to provide a heat dissipation assembly and a photovoltaic junction box thereof, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a radiating component, radiating component is applied to photovoltaic terminal box, includes at least one cooling tube, every the surface of cooling tube all is provided with a plurality of heat dissipation barb, the heat dissipation barb is used for increasing heat radiating area.

In this technical scheme, preferably, through at the surface machining of cooling tube obtain a plurality of heat dissipation barb, every the contained angle that heat dissipation barb and radiating piece surface formed is greater than 0, is less than 180.

In the technical scheme, preferably, the heat dissipation barb is any one of a fish scale shape, a triangular shape, a square shape, a semicircular shape, a round shape and a rectangular shape.

In the technical scheme, preferably, the outer contour of the cross section of the radiating pipe is round, oval, square, rectangle or isosceles trapezoid.

In the technical scheme, preferably, the wall thickness of the radiating pipe is more than or equal to 0.1mm and less than or equal to 10mm.

In the technical scheme, when the outer contour of the cross section of the radiating pipe is circular, the diameter of the radiating pipe is more than or equal to 1mm and less than or equal to 200mm.

In this technical scheme, preferably, the inner wall of cooling tube still is provided with a plurality of fin.

In this technical scheme, preferably, the radiating fin is parallel or spiral around the axial lead of the radiating pipe.

In this technical scheme, preferred, it still includes the connecting piece, the connecting piece extends along first direction, and a plurality of the cooling tube is arranged along first direction, and every the first end of cooling tube all with the connecting piece is connected, first direction perpendicular to the axial lead direction of cooling tube.

Based on the above heat dissipation assembly, the present utility model further provides a photovoltaic junction box, which includes: the LED lamp comprises a junction box body, a diode, two heat and electric conduction sheets and at least one heat dissipation assembly, wherein the diode, the two heat and electric conduction sheets and the heat dissipation assembly are all positioned in the junction box body; wherein: the diode is provided with a positive electrode pin and a negative electrode pin, the positive electrode pin is electrically connected with one of the heat and electric conduction sheets, and the negative electrode pin is electrically connected with the other heat and electric conduction sheet; the heat dissipation component is used for being connected with the heat conduction and electric conduction sheet and increasing the heat dissipation area.

Compared with the prior art, the utility model has the beneficial effects that:

this radiating component through many tubular cooling tubes to and the heat dissipation that sets up on the cooling tube surface is poured the bayonet type and can be very big increase radiating area, and then promotes the radiating efficiency of photovoltaic terminal box through the mode that increases radiating area. It was verified that the use of current of 20A to 35A was achieved when the photovoltaic junction box using this type of heat sink assembly employed 130 to 180 trench chips. Through simulation and calculation, the junction temperature of the photovoltaic junction box in the current mainstream design can be reduced to below 180 ℃ when hot spots occur by the design of the photovoltaic junction box.

Drawings

FIG. 1 is a perspective view of a photovoltaic junction box of the present utility model;

FIG. 2 is a perspective view of a heat dissipating assembly according to the present utility model;

fig. 3 is a perspective view of a radiating pipe according to the present utility model;

fig. 4 is a cross-sectional view of a radiating pipe according to the present utility model.

In the figure: 1. a junction box body; 2. a diode; 3. a connecting piece; 4. a heat-conductive and electric-conductive sheet; 5. a heat dissipation assembly; 51. a heat radiating pipe; 52. a heat dissipation barb; 53. and a heat radiating fin.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, it should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale, e.g., the thickness or width of some layers may be exaggerated relative to other layers for ease of description.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined or illustrated in one figure, no further detailed discussion or description thereof will be necessary in the following description of the figures.

Before understanding the present utility model, it should be clear that the photovoltaic junction box includes: the junction box comprises a junction box body 1, a diode 2 and two heat and electric conduction sheets 4. The diode 2 and the two heat and electric conduction sheets 4 are both positioned in the junction box body 1, and the diode 2 and the two heat and electric conduction sheets 4 are fixed in the junction box body 1 in a glue filling manner during production. Wherein: the diode 2 has a positive electrode pin and a negative electrode pin, the positive electrode pin is electrically connected with one of the heat and electric conduction sheets 4, and the negative electrode pin is electrically connected with the other heat and electric conduction sheet 4. In the prior art, heat dissipation is mainly performed by means of the heat conduction and electric conduction sheet 4, and the heat dissipation capacity is limited.

As shown in fig. 2, the present utility model provides a technical solution: the utility model provides a radiating component, this radiating component is applied to photovoltaic terminal box, and it includes at least one cooling tube 51, and the surface of every cooling tube 51 all is provided with a plurality of heat dissipation barb 52, and heat dissipation barb 52 is used for increasing the radiating area.

It should be appreciated that the heat dissipating barbs 52 may be provided on the outer surface of the heat dissipating member body in any number of ways. For example, welding, bonding, or the like may be used. The most convenient method for obtaining the heat dissipating barbs 52 in the present utility model is to obtain a plurality of heat dissipating barbs 52 directly by machining on the outer surface of the heat dissipating member body. And the included angle formed by the heat dissipation barbs 52 and the outer surface of the heat dissipation piece is more than 0 degrees and less than 180 degrees. Specifically, it may be any one angle of 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 90 °, 100 °, 110 °, 120 °, 130 °, 140 °, 150 °, 160 °, and 170 °, or any angle between the two adjacent angles.

At the same time, it should be clear that the manner in which the heat dissipating barbs 52 are machined is also varied. For example: a thinner layer may be scooped up on the surface of the radiating pipe 51, or the radiating pipe 51 may be directly scooped up. It should be clear that this form of shoveling through the heat pipe 51 is advantageous to maintain the form of the heat dissipating barbs 52 when glue filling is required. Will not affect the subsequent heat dissipation effect.

It should be clear that in the present utility model, the heat dissipating barb 52 may be designed in various shapes when the heat dissipating barb 52 is manufactured. The main purpose is to increase the heat dissipation area, so the heat dissipation barbs 52 are preferably sheet-like. It may be any type of sheet, including but not limited to: fish scales, triangular plates, square plates, semicircular plates, circular plates, rectangular plates, and the like, or combinations of the above.

In the present utility model, the radiating pipe 51 may be of any shape. It can be in various forms which are beneficial to heat dissipation. For example: the outer contour of the cross section of the radiating pipe 51 is any one of a circle, an ellipse, a square, a rectangle or an isosceles trapezoid. Of course, it is easily understood that the inner contour of the cross section of the radiating pipe 51 may be any one of a circle, an ellipse, a square, a rectangle, or an isosceles trapezoid, which is not limited thereto.

Since the heat dissipation assembly 5 of the present utility model is mainly applied to the photovoltaic junction box. Therefore, when the photovoltaic junction box is applied to different photovoltaic junction boxes, the size of the photovoltaic junction box needs to be limited, so that the photovoltaic junction box has a good heat dissipation effect. Specifically, the wall thickness of the radiating pipe 51 is 0.1mm or more and 10mm or less. It may be any one thickness of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 1.0mm, 2.0mm, 3.0mm, 4.0mm, 5.0mm and 10.0 mm. Or any thickness between the two adjacent thicknesses. When the outer contour of the cross section of the radiating pipe 51 is circular, the diameter of the radiating pipe 51 is 1mm or more and 200mm or less. Specifically, it may be any one of diameters 1mm, 2mm, 3mm, 4mm, 5mm, 10mm, 20mm, 50mm, 100mm, 150mm and 200mm, or any diameter between the two adjacent diameters.

In order to further enhance the heat dissipation performance of the heat dissipation assembly 5 of the present utility model. As shown in fig. 3 and 4, in other embodiments of the present utility model, the inner wall of the radiating pipe 51 is further provided with a plurality of radiating fins 53. The heat radiating fins 53 are also used to increase the heat radiating area. Thus, each heat radiating fin 53 may also be of various forms, such as: the radiating fins 53 are parallel or spirally wound around the axial line of the radiating pipe 51. And the thickness of the radiating fin 53 may be controlled to be 0.1 to 0.5 times the wall thickness of the radiating pipe 51.

To further enhance the utility of the heat dissipating assembly 5 of the present utility model. The heat dissipation device further comprises a connecting piece 3, the connecting piece 3 extends along a first direction, the plurality of heat dissipation tubes 51 are arranged along the first direction, the first end of each heat dissipation tube 51 is connected with the connecting piece 3, and the first direction is perpendicular to the axial line direction of the heat dissipation tube 51. The plurality of radiating pipes 51 are connected to the connecting piece 3 in advance, and then the radiating pipes 51 and the heat and electric conduction sheets 4 are connected in a heat conduction way through the connecting piece 3. The device can save subsequent installation procedures and improve labor efficiency.

It should be clear here that the connecting element 3 can also be of any strip-like construction. And the connection member 3 may be manufactured in a different pattern according to a different connection manner with the heat and electric conductive sheet 4. At the same time, the connection 3 is also required to have good heat conducting properties. It may be made of alloy, copper or aluminum with good thermal conductivity.

On the basis of the heat dissipation assembly 5, the utility model also provides a photovoltaic junction box, which adopts the heat dissipation assembly 5 in any one of the embodiments. The heat dissipation component 5 is used for being connected with the heat conduction and electric conduction sheet 4 and increasing the heat dissipation area of the photovoltaic junction box.

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

Claims

1. The utility model provides a radiating assembly, radiating assembly is applied to photovoltaic terminal box, its characterized in that includes at least one cooling tube (51), every the surface of cooling tube (51) all is provided with a plurality of heat dissipation barb (52), heat dissipation barb (52) are used for increasing the radiating area.

2. A heat dissipating assembly according to claim 1, wherein a plurality of said heat dissipating barbs (52) are machined into the outer surface of said heat dissipating tube (51), each of said heat dissipating barbs (52) forming an angle with the outer surface of the heat dissipating member of greater than 0 ° and less than 180 °.

3. The heat dissipating assembly of claim 1, wherein the heat dissipating barb (52) is any one of a fish scale shape, a triangular shape, a square shape, a semicircular shape, a round shape, and a rectangular shape.

4. The heat sink assembly of claim 1 wherein the heat pipe (51) has a cross-section with an outer contour that is circular, oval, square, rectangular or isosceles trapezoid.

5. The heat dissipating assembly according to claim 1, wherein the heat dissipating tube (51) has a wall thickness of 0.1mm or more and 10mm or less.

6. The heat dissipating assembly according to claim 1, wherein when the outer contour of the cross section of the heat dissipating tube (51) is circular, the diameter of the heat dissipating tube (51) is 1mm or more and 200mm or less.

7. The heat dissipating assembly of claim 1, wherein the inner wall of the heat dissipating tube (51) is further provided with a plurality of heat dissipating fins (53).

8. The heat sink assembly of claim 7, wherein the heat dissipating fins (53) are parallel or helically wound around the axis of the heat dissipating tube (51).

9. The heat dissipating assembly of claim 8, further comprising a connector (3), wherein the connector (3) extends in a first direction, wherein a plurality of the heat dissipating tubes (51) are arranged in the first direction, and wherein a first end of each of the heat dissipating tubes (51) is connected to the connector (3), wherein the first direction is perpendicular to a direction of an axis of the heat dissipating tubes (51).

10. A photovoltaic junction box, comprising: junction box body (1), a diode (2), two heat and electric conducting strips (4) and at least one heat dissipation assembly (5) according to any one of claims 1 to 9, wherein the diode (2), the two heat and electric conducting strips (4) and the heat dissipation assembly (5) are all located inside the junction box body (1); wherein:

the diode (2) is provided with a positive electrode pin and a negative electrode pin, the positive electrode pin is electrically connected with one of the heat and electric conduction sheets (4), and the negative electrode pin is electrically connected with the other heat and electric conduction sheet (4);

the heat dissipation component (5) is used for being connected with the heat conduction and electric conduction sheet (4) and increasing the heat dissipation area.