CN217037133U

CN217037133U - Photovoltaic junction box

Info

Publication number: CN217037133U
Application number: CN202220694562.0U
Authority: CN
Inventors: 王勇军
Original assignee: Henan Fenghao Photovoltaic Power Generation Co ltd
Current assignee: Henan Fenghao Photovoltaic Power Generation Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-07-22
Anticipated expiration: 2032-03-29

Abstract

The utility model provides a photovoltaic junction box which comprises a box body, at least four conductive assemblies, at least three diode modules and a heat dissipation assembly, wherein the conductive assemblies are arranged at intervals. The box body comprises an upper cover and a lower cover which are mutually covered, and a placing cavity formed between the upper cover and the lower cover; at least four conducting components arranged at intervals are accommodated in the placing cavity; at least three diode modules are arranged between adjacent conductive components; the heat dissipation assembly comprises a heat conduction cover body, a heat conduction sheet and a heat dissipation structure, wherein the heat conduction cover body is arranged in the placing cavity, the heat conduction sheet is arranged in the placing cavity, and the heat dissipation structure is arranged in a heat dissipation groove formed in the upper surface of the upper cover. According to the utility model, the heat dissipation assembly is arranged on the photovoltaic junction box, so that heat generated by the diode during working can be quickly conducted from the inside of the photovoltaic junction box to the outside of the photovoltaic junction box, and the heat dissipation efficiency of the photovoltaic junction box is greatly improved.

Description

Photovoltaic junction box

Technical Field

The utility model belongs to the technical field of photovoltaics, and particularly relates to a photovoltaic junction box.

Background

The photovoltaic junction box mainly plays the effect of electrical connection and protection in photovoltaic module, and the electric current that produces photovoltaic module is leading-in to electric equipment or national electric wire netting on the one hand and looks for that, and on the other hand places the production of hot spot effect through the bypass diode, prevents that solar wafer and subassembly packaging material from appearing the problem of high temperature damage.

In order to reduce the damage, the photovoltaic junction box generally adopts a mode of integrating bypass diodes, the diodes generate power consumption in the working process and can generate a large amount of heat, the traditional photovoltaic junction box automatically dissipates heat through the diodes, only the heat of the diodes can be dissipated into the junction box, and then the heat is dissipated to the outside through a box body of the junction box, and the efficiency of the heat dissipation mode is too low, so that the diodes can lose efficacy due to overhigh temperature, and the normal work of a photovoltaic assembly is influenced.

According to the technical problems in the prior art, the utility model provides a photovoltaic junction box.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model provides a photovoltaic junction box which has the characteristics of simple structure and good heat dissipation effect.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

a photovoltaic junction box comprises

The box body comprises an upper cover and a lower cover which are mutually covered, and a placing cavity formed between the upper cover and the lower cover;

at least four conductive components which are arranged at intervals are accommodated in the placing cavity;

at least three diode modules, the diode modules being electrically connected between adjacent conductive components;

the heat dissipation assembly comprises a heat conduction cover body, a heat conduction sheet and a heat dissipation structure,

the heat conduction cover body is arranged in the placing cavity,

the heat conducting fin is arranged in the placing cavity,

the heat dissipation structure is arranged in a heat dissipation groove formed in the upper surface of the upper cover.

Preferably, the cross section of the heat conduction cover body is U-shaped, and the heat conduction cover body covers the diode module and the conductive assembly;

the heat conducting fin is connected and fixed with the heat radiating structure through a heat conducting section embedded in the upper cover,

the heat conducting sheet is positioned above the heat conducting cover body, and heat conducting silicone grease is arranged between the heat conducting sheet and the heat conducting cover body.

Preferably, the heat dissipation structure comprises

The radiating fins are arranged at the bottom of the radiating grooves, and the shapes of the radiating fins and the bottom surfaces of the radiating grooves are consistent; and (c) a second step of,

the radiating convex strips are arranged on the upper surface of the radiating fin in an equidistant array mode.

Preferably, the heat sink may have a cross structure.

Preferably, the positive electrode and the negative electrode of each diode module are respectively connected with two adjacent conductive components, the positive electrode or the negative electrode of one diode module is adjacent to the negative electrode or the positive electrode of the adjacent diode module, and the diode modules are connected in series.

Preferably, the device further comprises two electric leads, and the two electric leads are respectively electrically connected with the conductive component arranged on the edge.

Preferably, the electrical lead comprises

An electrical lead electrically connected to the conductive component; and

the shielding layer is a metal net or a metal foil and covers the electric lead;

and the insulating protection layer covers the shielding layer.

Preferably, the electrical leads are woven from a plurality of strands of silver wire.

The utility model has the following positive effects:

according to the utility model, the heat dissipation assembly is arranged on the photovoltaic junction box, so that heat generated by the working of the diode can be quickly conducted from the inside of the photovoltaic junction box to the outside of the photovoltaic junction box.

Drawings

In order that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the utility model, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings

FIG. 1 is a schematic view of a photovoltaic junction box according to the present invention;

FIG. 2 is an exploded view of a photovoltaic junction box of the present invention;

fig. 3 is a sectional view taken along the line a in fig. 2.

Reference numbers:

1. a box body; 101. an upper cover; 102. a lower cover; 103. a placement chamber; 2. a conductive component; 3. a diode module; 4. a heat dissipating component; 401. a heat conducting cover body; 402. a heat conductive sheet; 403. a heat dissipation structure; 4031. a heat sink; 4032. heat dissipation convex strips; 404. a heat dissipation section; 5. a heat sink; 6. an electrical lead; 601. an electrically conductive wire; 602. a shielding layer; 603. an insulating protective layer;

Detailed Description

The conception, the specific structure and the technical effects produced by the present invention will be clearly and completely described in conjunction with the embodiments and the attached drawings, so as to fully understand the objects, the features and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts are within the protection scope of the present invention based on the embodiments of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The technical characteristics in the utility model can be combined interactively on the premise of not conflicting with each other.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

FIGS. 1-3 are schematic structural views of a photovoltaic junction box of the present invention, including

The box body 1 comprises an upper cover 101 and a lower cover 102 which are mutually covered, and a placing cavity 103 formed between the upper cover 101 and the lower cover 102;

at least four conductive components 2 arranged at intervals and accommodated in the placing cavity 103;

at least three diode modules 3, wherein the diode modules 3 are electrically connected and arranged between the adjacent conductive components 2;

the heat dissipation assembly 4, which includes a heat conductive cover 401, a heat conductive sheet 402 and a heat dissipation structure 403,

the heat-conducting enclosure 401 is disposed inside the placing cavity 103,

the heat conduction sheet 402 is disposed inside the placing cavity 103,

the heat dissipation structure 403 is disposed in the heat dissipation groove 5 formed on the upper surface of the upper cover 101.

Further, the cross section of the heat conduction cover body 401 is U-shaped, and the heat conduction cover body 401 covers the diode module 3 and the conductive component 2;

the heat conducting plate 402 is connected and fixed with the heat dissipating structure 403 through a heat conducting section 404 embedded in the upper cover 101,

the heat conducting sheet 402 is located above the heat conducting cover 401, and heat conducting silicone grease is arranged between the heat conducting sheet 402 and the heat conducting cover 401, on one hand, the heat conducting silicone grease is arranged for insulation, and on the other hand, the heat conducting silicone grease is arranged for improving heat conducting efficiency.

Further, the heat dissipation structure 403 includes

The cooling fins 4031 are arranged at the bottom of the cooling groove 5, and the shapes of the cooling fins 4031 and the bottom surface of the cooling groove 5 are consistent; and (c) a second step of,

the heat dissipation protruding strips 4032 are arranged on the upper surface of the heat dissipation plate 4301 in an equidistant array.

Further, the heat sink 5 may have a cross structure.

Further, the positive electrode and the negative electrode of the diode module 3 are respectively connected to two adjacent conductive components 2, the positive electrode or the negative electrode of one diode module 3 is adjacent to the negative electrode or the positive electrode of the adjacent diode module 3, and the diode modules 3 are connected in series.

Furthermore, the device also comprises two electric leads 6, and the two electric leads 6 are respectively electrically connected with the conductive component 2 arranged at the edge.

Further, the electrical lead 6 comprises

An electrically conductive wire 601 electrically connected to the electrically conductive member 2; and

a shielding layer 602, which is a metal mesh or a metal foil, covering the electrical conductor 601;

and an insulating protection layer 603 covering the shielding layer 602.

Further, the electric lead 6 is woven by a plurality of strands of silver wires.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions, all of which are within the scope of the claims appended hereto.

Claims

1. A photovoltaic junction box, its characterized in that: comprises that

The box body (1) comprises an upper cover (101) and a lower cover (102) which are mutually covered, and a placing cavity (103) formed between the upper cover (101) and the lower cover (102);

at least four conducting components (2) which are arranged at intervals and are accommodated in the placing cavity (103);

the diode modules (3) are electrically connected and arranged between the adjacent conductive components (2);

the heat dissipation assembly (4) comprises a heat conduction cover body (401), a heat conduction sheet (402) and a heat dissipation structure (403),

the heat conduction cover body (401) is arranged inside the placing cavity (103),

the heat conducting sheet (402) is arranged inside the placing cavity (103),

the heat dissipation structure (403) is arranged in a heat dissipation groove (5) formed in the upper surface of the upper cover (101).

2. A photovoltaic junction box according to claim 1, wherein: the section of the heat conduction cover body (401) is U-shaped, and the heat conduction cover body (401) covers the diode module (3) and the conductive assembly (2);

the heat conducting fin (402) is connected and fixed with the heat radiating structure (403) through a heat conducting section (404) embedded in the upper cover (101),

the heat conducting fin (402) is positioned above the heat conducting cover body (401), and heat conducting silicone grease is arranged between the heat conducting fin (402) and the heat conducting cover body (401).

3. The photovoltaic junction box of claim 2, wherein: the heat dissipation structure (403) comprises

The heat radiating fins (4031) are arranged at the bottoms of the heat radiating grooves (5), and the shapes of the heat radiating fins (4031) are consistent with those of the bottom surfaces of the heat radiating grooves (5); and (c) a second step of,

and the heat dissipation convex strips (4032) are arranged on the upper surface of the heat dissipation fin (4031) in an equidistant array.

4. A photovoltaic junction box according to claim 3, wherein: the heat dissipation groove (5) can be of a cross structure.

5. The photovoltaic junction box of claim 1, wherein: the anode and the cathode of the diode module (3) are respectively connected with the two adjacent conductive components (2), the anode or the cathode of one diode module (3) is adjacent to the cathode or the anode of the adjacent diode module (3), and the diode modules (3) are connected in series.

6. The photovoltaic junction box of claim 1, wherein: the electric heating wire is characterized by further comprising two electric leads (6), wherein the two electric leads (6) are electrically connected with the conductive component (2) arranged on the edge respectively.

7. The photovoltaic junction box of claim 6, wherein: the electrical lead (6) comprises

An electrical lead (601) electrically connected to the conductive component (2); and

a shielding layer (602) which is a metal net or a metal foil and covers the electric lead (601);

an insulating protective layer (603) covering the shielding layer (602).

8. The photovoltaic junction box of claim 6, wherein: the electric lead (6) is woven by a plurality of strands of silver wires.