CN214900790U

CN214900790U - Split type terminal box of solar photovoltaic module

Info

Publication number: CN214900790U
Application number: CN202121236911.6U
Authority: CN
Inventors: 王薇珲; 王洪昌; 蒋文; 黄涌; 王剑
Original assignee: Wei Hui Wang
Current assignee: Wei Hui Wang
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-11-26
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a split type terminal box of solar PV modules, comprises a box bod, be provided with the electric conductor in the box body, the electric conductor is including the fin that has electrically conductive function and the bypass diode that sets up on the fin, and this device can improve the radiating effect, the solar PV modules of high-power, heavy current of matching that can be perfect.

Description

Split type terminal box of solar photovoltaic module

Technical Field

The utility model relates to a terminal box technical field, concretely relates to split type terminal box of solar PV modules.

Background

The solar photovoltaic cell is a device for directly converting solar radiation energy into electric energy, and the photovoltaic module is a product formed by connecting a plurality of photovoltaic cells in series and parallel and then packaging the photovoltaic cells, and is a basic unit in a photovoltaic power generation system. The photovoltaic module junction box is a key device for introducing electric energy generated by the solar photovoltaic module into a power supply system.

At present, the power of a photovoltaic module is increased, the voltage and the current are increased, and higher requirements are put forward for a junction box. Under the condition that the overall dimension of the box body of the conventional junction box is certain at present, the requirement of large current cannot be met due to insufficient heat dissipation capability.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a split type terminal box of solar PV modules to improve the heat-sinking capability of terminal box body.

The utility model provides a split type terminal box of solar PV modules, includes the box body, be provided with the electric conductor in the box body, the electric conductor is including the fin that has electrically conductive function and the bypass diode that sets up on the fin.

Preferably, the heat radiating fins are copper sheets, and the thickness of the copper sheets is 0.5-2 mm.

Preferably, the side walls of the heat sink are bent upward or downward.

Preferably, two electric solder mask areas are arranged on the heat dissipation sheet, the two electric solder mask areas are respectively located on two sides of the bypass diode, a pin of the bypass diode is bent, and the two pins of the bypass diode are respectively connected with the two resistance welding areas.

Preferably, the pin is divided into an inner section and an outer section, the cross section of the inner section is circular, the cross section of the outer section is oblate or square or the top wall and the bottom wall are planes, the left wall and the right wall are cambered surfaces, and the outer section is connected with the resistance welding area.

Preferably, the size of the chip inside the bypass diode is mil-mil.

Preferably, a clamping groove for mounting the bypass diode is formed in the heat dissipation plate, and soldering areas for soldering the bypass diode are arranged on two sides of the clamping groove.

Preferably, the bottom wall of the box body is connected with a fixing column, a fixing hole is formed in the radiating fin, and the fixing column enters the fixing hole.

Preferably, the box body is provided with an opening at the top, the opening can be completely closed by the upper cover, and the upper cover is detachably connected with the box body.

Preferably, the gap in the box body is sealed by a sealing and heat-dissipating pouring sealant.

The beneficial effects of the utility model are embodied in: the utility model discloses mainly be under the condition that does not increase box body size, through the material thickness of rational selection fin, the bending structure of fin lateral wall, the inside chip size of bypass diode, pin flatten the shape to and the cooperation of sealed heat dissipation glue, very big improvement radiating effect, the solar PV modules of high-power, the heavy current of matching that can be perfect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic view of the overall structure of the box body of the present invention;

FIG. 2 is a schematic view of the overall structure of the case body when the bypass diode is not installed in the present invention;

FIG. 3 is a bottom view of the box body of the present invention;

fig. 4 is a perspective view of the electric conductor of the present invention;

fig. 5 is a perspective view of another angle of the electric conductor of the present invention;

fig. 6 is a perspective view of the electric conductor cooling fin of the present invention;

fig. 7 is a bottom view of the electric conductor heat sink of the present invention;

fig. 8 is a perspective view of the bypass diode of the electric conductor of the present invention.

In the figure, 1-box body, 2-electric conductor, 3-cable, 4-pressing block, 6-upper cover, 13-opening, 21-heat sink, 22-bypass diode, 121-fixing column, 122-guiding hole, 123-buckle, 212-clamping groove, 213-electric solder mask, 214-tin welding area, 215-clamping table, 216-fixing hole, 217-first bending part, 218-second bending part, 219-third bending part, 220-fourth bending part, 221-fifth bending part, 222-U-shaped groove and 223-pin.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Example 1

The embodiment provides a split type junction box of a solar photovoltaic assembly, which comprises a box body 1, wherein a conductive body 2 is arranged in the box body, and the conductive body 2 comprises a radiating fin 21 with a conductive function and a bypass diode 22 arranged on the radiating fin 21.

In the technical scheme, the conductor 2 comprises the radiating fin 21 and the bypass diode 22, and the radiating fin 21 can conduct electricity and radiate heat at the same time, so that compared with the original conductor 2, the conductor has the main function of conducting electricity, and the radiating capacity of the device is improved.

Specifically, in this embodiment, the box body 1 is a square structure, the bottom wall of the box body 1 is provided with a guide hole 122 for connecting the bus bar of the solar photovoltaic module with the electric conductor 2 through the guide hole 122, the bottom wall of the box body 1 is connected with a fixing column 121 and a buckle 123, the heat sink 21 is provided with a fixing hole 216 matched with the fixing column 121 and a clamping table 215 matched with the buckle, so as to fix the electric conductor 2, wherein the number of the fixing column 121, the fixing hole 216, the buckle 123 and the clamping table 215 is set according to actual conditions, and no unnecessary limitation is made here.

The bottom wall of the box body 1 is provided with an opening 13, one side of the radiating fin 21 is connected with a U-shaped groove 222, the cable 3 is placed in the U-shaped groove 222 through the opening 13 to be connected with the radiating fin 21, and then the cable 3 is fixed in the U-shaped groove 222 by using the pressing block 4.

Still include upper cover 6 in this embodiment, 1 open-top of box body, upper cover 6 can be with the whole closures of opening, and upper cover 6 can be dismantled with box body 1 and be connected, so can be convenient for to the installation of subassembly in the box body 1.

In this embodiment, the gap in the box body 1 is sealed by a sealing and heat dissipating potting adhesive, so that the heat dissipating capability can be further increased.

Example 2

The embodiment is further limited on the basis of embodiment 1, in the embodiment, the heat sink 21 is a copper sheet, and the thickness of the copper sheet is 0.5-2mm, so that the size of the copper sheet can meet the requirement of the volume of the box body 1, and the heat dissipation effect is also good.

Example 3

The present embodiment is further limited on the basis of embodiment 2, and in the present embodiment, the side wall of the heat dissipation plate 21 is bent upward or downward.

In the present embodiment, the side walls of the heat sink are bent upward or downward, so that the surface area of the heat sink 21 can be increased to increase the heat dissipation capability of the heat sink 21 with a constant horizontal area, specifically, the U-shaped groove 222 is connected to the right wall of the heat sink 21, the rear wall of the heat sink 21 is bent upward to form the first bent portion 217 and the second bent portion 218, the front wall of the heat sink 21 is bent upward to form the third bent portion 219 and the fourth bent portion 220, and the front wall of the heat sink 21 is bent upward to form the fifth bent portion 221.

Example 4

In this embodiment, a further limitation is made on embodiment 3, in this embodiment, two electrical solder mask regions 213 are disposed on the heat sink 21, the two electrical solder mask regions 213 are respectively located at the left and right sides of the bypass diode 22, the pin 223 of the bypass diode 22 is curved, and the two pin 223 of the bypass diode 22 are respectively connected to the two electrical solder mask regions 213.

In this embodiment, the pin 223 is divided into an inner section and an outer section, the cross section of the inner section is circular, the cross section of the outer section is flat circular or square or the top wall and the bottom wall are planes, the left wall and the right wall are arc surfaces, and the outer section is connected with the electrical solder mask region 213.

In this embodiment, the bypass diode 22 is an axial diode packaged by schottky R6, and is arranged in the box body 1 along the front-back direction, the size of the internal chip is 80mil to 300mil, the initial size of the pin 223 is 1.2 mm to 3.0mm in diameter, the two pins 223 and the main body of the bypass diode 22 form an S shape, the outer section is extruded by the molding equipment, the width of the outer section is about 2.5 mm to 5mm, and the height of the outer section is about 0.7 mm to 1.8 mm.

The heat dissipation principle, at first set up bypass diode 22's pin 223 into crooked form, can increase bypass diode 22's pin 223's length like this, it is stronger to make it heat-sinking capability, then the outer section of pin 223 is extruded and is the shape welding such as oblate form or square in electric solder mask district 213, this kind of shape can make the thickness attenuation, then the surface area increases, increase heat radiating area, thereby increase heat-sinking capability, the inner segment cross-section does not influence normal connection for the circular arc type simultaneously, the outer segment diapire is that plane welding is more convenient.

In order to fix the bypass diode 22 more firmly, in the present embodiment, the heat sink 21 is provided with a card slot 212 for mounting the bypass diode 22, and two sides of the card slot 212 are provided with soldering regions 214 for soldering the bypass diode 22.

The junction box can be a positive junction box, a negative junction box and a middle junction box, and is not limited herein.

The device is suitable for the installation and the application of a solar photovoltaic component and the application of rated current of 20A-50A,

finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The split type junction box for the solar photovoltaic module is characterized by comprising a box body (1), wherein a conductive body (2) is arranged in the box body, and the conductive body (2) comprises a radiating fin (21) with a conductive function and a bypass diode (22) arranged on the radiating fin (21).

2. The split junction box of claim 1, wherein the heat sink (21) is a copper sheet, and the thickness of the copper sheet is 0.5-2 mm.

3. The split junction box for solar photovoltaic modules of claim 1, wherein the side wall of the heat sink (21) is bent upward or downward.

4. The split junction box of claim 1, wherein the heat sink (21) is provided with two electrical solder mask regions (213), the two electrical solder mask regions (213) are respectively located at two sides of the bypass diode (22), the pin (223) of the bypass diode (22) is bent, and the two pin (223) of the bypass diode (22) are respectively connected with the two electrical solder mask regions (213).

5. The split-type junction box of the solar photovoltaic module as claimed in claim 4, wherein the pins (223) are divided into an inner section and an outer section, the inner section has a circular cross section, the outer section has a flat circular or square cross section or a plane top wall and a plane bottom wall, the left wall and the right wall have a cambered surface shape, and the outer section is connected with the electrical solder mask region (213).

6. The split junction box of claim 4, wherein the size of the chip inside the bypass diode (22) is 80-300 mil.

7. The split junction box of claim 4, wherein the heat sink (21) is provided with a slot (212) for mounting the bypass diode (22), and soldering regions (214) for soldering the bypass diode (22) are disposed on two sides of the slot (212).

8. The split junction box of the solar photovoltaic module as claimed in claim 1, wherein the bottom wall of the box body (1) is connected with a fixing post (121), the heat sink (21) is provided with a fixing hole (216), and the fixing post (121) enters the fixing hole (216).

9. The split type junction box of the solar photovoltaic module according to claim 1, further comprising an upper cover (6), wherein the top of the box body (1) is open, the upper cover (6) can completely close the opening, and the upper cover (6) is detachably connected with the box body (1).

10. The split junction box of the solar photovoltaic module according to claim 1, wherein the gap in the box body (1) is sealed by a heat-dissipating potting adhesive.