CN217428079U - Split type terminal box soaks in bottom - Google Patents
Split type terminal box soaks in bottom Download PDFInfo
- Publication number
- CN217428079U CN217428079U CN202221399111.0U CN202221399111U CN217428079U CN 217428079 U CN217428079 U CN 217428079U CN 202221399111 U CN202221399111 U CN 202221399111U CN 217428079 U CN217428079 U CN 217428079U
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- China
- Prior art keywords
- junction box
- side wall
- bottom cover
- emptying
- annular side
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- 239000004020 conductor Substances 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a bottom-rising split type junction box, which relates to the technical field of solar photovoltaic assembly junction boxes and comprises a junction box, wherein the junction box comprises a box body, an electric conductor, a bottom cover and an upper cover, the box body comprises an annular side wall, the annular side wall is connected with the annular side wall inside the bottom cover, the bottom cover is arranged in a rising manner, the bottom cover is also provided with a fixed column, a guide hole and a buckle, the electric conductor is arranged at the top of the bottom cover, and the upper cover is connected with the top of the annular side wall; the thickness of the radiating fins of the conductor and the downward bending structure of the side faces of the radiating fins can be reasonably selected under the condition that the size of the box body is not increased, the size of the chip inside the bypass diode and the area of the flattened pins of the bypass diode are increased and are welded with the radiating fins into a whole through the resistance welding process, the three-dimensional radiating effect of front, back, left, right, upper and lower is formed, the rated current of the junction box is increased, and the photovoltaic module with high power and high current can be perfectly matched.
Description
Technical Field
The utility model relates to a solar PV modules terminal box technical field, concretely relates to split type terminal box soaks in bottom.
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, 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 more and more, the voltage and the current are increased along with the increase of the power, and higher requirements are put forward for a junction box. At present, the conventional junction box cannot meet the requirement of large current, so that in order to increase the heat dissipation capacity of the bypass diode, simultaneously, the overall dimension of the junction box is not enlarged, the assembly cost and the operation risk of a power station are reduced, and a junction box needs to be developed for matching with a component with large power.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a split type terminal box soaks in bottom to solve above-mentioned technical problem.
The bottom-emptying split type junction box comprises a junction box body, a conductor, a bottom cover and an upper cover, wherein the junction box body comprises an annular side wall, the annular side wall is connected with the annular side wall inside the bottom cover, the bottom cover is arranged in an emptying mode, a fixing column, a guide hole and a buckle are further arranged on the bottom cover, the conductor is arranged on the top of the bottom cover, and the upper cover is connected with the top of the annular side wall.
Preferably, the conducting strip comprises a radiating fin and a bypass diode, the radiating fin comprises a horizontal bottom wall, a clamping groove and a resistance welding area, a tin welding area is arranged on the horizontal bottom wall, and the bypass diode is connected with the radiating fin through a pin.
Preferably, the first bending side wall and the second bending side wall are arranged in the direction parallel to the bypass diode.
Preferably, a pin of the bypass diode is an oblate flat surface, and the pin is welded to the resistance welding area.
Preferably, the bypass diode is an axial diode in a schottky R package.
Preferably, the emptying distance of the bottom cover is 4.4 mm.
Preferably, the annular side wall is further provided with an opening, and the heat sink is further provided with a U-shaped groove.
Preferably, the cable further comprises a cable and a pressing block, the cable penetrates through the opening and is connected with the conductor, and the pressing block is arranged at the opening.
The beneficial effects of the utility model are embodied in:
the utility model discloses a can be under the condition that does not increase the box body size, through the thickness of the fin of reasonable selection electric conductor, the side downward bending structure of fin, the inside chip size of bypass diode, bypass diode pin flatten the back area increase and the fin passes through the welding of resistance welding technology and fuses as an organic whole, before forming, back, left and right, upper and lower three-dimensional radiating effect, make the rated current increase of terminal box, the photovoltaic module of high-power, 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 perspective view of the bottom-soaring split junction box of the present invention;
FIG. 2 is a perspective view of the housing of the present invention;
fig. 3 is a cross-sectional view of the housing of the present invention;
fig. 4 is a perspective view of the bottom cover of the present invention;
fig. 5 is a perspective view of the electric conductor of the present invention;
fig. 6 is a perspective view of another angle of the electric conductor of the present invention;
fig. 7 is a perspective view of the bypass diode of the present invention.
In the attached drawings, 1-box body; 11-a side wall; 13-opening; 2-an electrical conductor; 21-a heat sink; 22-a bypass diode; 211-horizontal bottom wall; 212-card slot; 213-electrical solder mask; 214-a solder area; 215-card table; 216-fixed orifices; 217-bending the first side wall; 218-bending a second side wall; 219-bending a side wall III; 220-bending the side wall IV; 222-U-shaped groove; 223-pin; 224-oblate pins; 3-a cable; 4-briquetting; 5-bottom cover; 51-fixed columns; 52-a guide hole; 53-buckling; 6-covering; 7-can sealing glue.
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.
As shown in fig. 1, 2, and 4, a bottom-emptying split type junction box includes a junction box, the junction box includes a box body 1, a conductive body 2, a bottom cover 5, and an upper cover 6, the box body 1 includes an annular sidewall 11, the annular sidewall 11 is connected to the annular sidewall 11 inside the bottom cover 5, the bottom cover 5 is arranged in an emptying manner, the bottom cover 5 is further provided with a fixing column 51, a guiding hole 52, and a buckle 53, the conductive body 2 is installed on the top of the bottom cover 5, and the upper cover 6 is connected to the top of the annular sidewall 11.
When the box body is connected with the annular side wall, the box body is adhered through the pouring sealant which is used for sealing and radiating,
as shown in fig. 5 and 6, more specifically, the conductive sheet includes a heat sink 21 and a bypass diode 22, the heat sink 21 includes a horizontal bottom wall 211, a card slot 212 and a resistance welding area 213, a soldering area 214 is provided on the horizontal bottom wall 211, and the bypass diode 22 is connected to the heat sink 21 through a pin 223.
As shown in fig. 5 and 6, more specifically, a first bent sidewall 217 and a second bent sidewall 218 are provided in a direction parallel to the bypass diode 22 of the heat sink 21.
The radiating fin is made of a copper material with good electric conduction and heat dissipation, the thickness of the copper material is 0.5-2mm, and the copper material is punched and formed to obtain the required radiating fin. The side surface of the radiating fin is bent upwards or downwards, the radiating area is further increased, the three-dimensional space of the product is fully utilized for radiating, the product performance is improved, and meanwhile, the radiating fin bent upwards or downwards does not occupy the size of the box body in the length and width directions, so that the whole size control of the junction box is facilitated.
As shown in fig. 7, more specifically, the pin 223 of the bypass diode 22 is an oblate flat surface, and the pin 223 is soldered to the electrical solder resist region 213.
The junction box is suitable for installation and application of a solar large-current photovoltaic module, the rated current can reach 20-50A, a bus bar of the solar photovoltaic module is connected to a welding groove of a conductor through a guide hole in a box body bottom cover, and pins of bypass diodes are in a flat shape through an extrusion forming process during assembly. The cross section of the pin is a flat surface.
The bypass diode is placed on the radiating fin, wherein the pin and the card person are in the clamping groove on the radiating fin, and the oblate plane of the pin is attached to the resistance welding area on the horizontal bottom wall of the radiating fin. And welding the flat surface and the resistance welding area together by a resistance welding process.
The radiating fins welded with the bypass diodes form an integral electric conductor, fixing holes in the electric conductor are matched with fixing columns in the bottom cover and are fixed in a hot melting mode, and the buckle in the bottom cover is clamped on the clamping table in the box body to be assembled and fixed.
And after the cable is electrically connected with the conductor, the cable is welded and fixed on the junction box through the ultrasonic pressing block.
After the client is installed, the sealing and heat-dissipating pouring sealant 7 is poured, and the upper cover is covered for use.
More specifically, the bypass diode 22 is an axial diode packaged with schottky R6.
The specification of an internal chip of the axial diode packaged by the Schottky R6 is that the size is different from 80mil to 300mil, the initial size of a pin of the axial diode packaged by the Schottky R6 is phi 1.2-3.0mm, after the pin is extruded by forming equipment, the cross section of the pin is changed from a round shape in an initial state into an oblate shape, and the oblate cross section is a plane and an arc surface. The width of the oblate is about 1.8-2.5mm, and the thickness of the oblate is about 0.5-0.8 mm. When the cylindrical shape of the diode is changed into the shape of a diode pin welded on the radiating fin, one surface of the oblate plane is welded with the radiating fin into a whole through a resistance welding process.
As shown in fig. 3, more specifically, the emptying distance of the bottom cover 5 is 4.4 mm.
The bottom of the utility model is 4.4mm empty after the bottom is assembled with the shell. The space distance between the radiating fins, the axial diodes and the photovoltaic panel assembly is greatly increased, the radiating space of the junction box is further increased, the three-dimensional space of the product is fully utilized for radiating, and the product performance is improved.
As shown in fig. 1, more specifically, the annular sidewall 11 is further provided with an opening 12, and the heat sink 21 is further provided with a U-shaped groove 222.
As shown in fig. 1, more specifically, the cable assembly further includes a cable 3 and a pressing block 4, wherein the cable 3 is connected to the conductor 2 through the opening 12, and the pressing block 4 is disposed at the opening 12.
The junction box not designed with an opening and a U-shaped groove for cable connection is an intermediate junction box, while the junction box designed with an opening and a U-shaped groove may be referred to as a positive junction box or a negative junction box.
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 (8)
1. A split type terminal box with an empty bottom is characterized in that: the novel junction box comprises a junction box body (1), a conductive body (2), a bottom cover (5) and an upper cover (6), wherein the box body (1) comprises an annular side wall (11), the annular side wall (11) is connected with the annular side wall (11) in the bottom cover (5), the bottom cover (5) is arranged in an empty state, a fixing column (51), a guide hole (52) and a buckle (53) are further arranged on the bottom cover (5), the conductive body (2) is arranged on the top of the bottom cover (5), and the upper cover (6) is connected with the top of the annular side wall (11).
2. The bottom-emptying split junction box of claim 1, wherein: the electric conductor comprises a radiating fin (21) and a bypass diode (22), the radiating fin (21) comprises a horizontal bottom wall (211), a clamping groove (212) and a resistance welding area (213), a tin welding area (214) is arranged on the horizontal bottom wall (211), and the bypass diode (22) is connected with the radiating fin (21) through a pin (223).
3. The bottom-emptying split junction box of claim 2, wherein: and a first bent side wall (217) and a second bent side wall (218) are arranged in the direction parallel to the bypass diode (22) of the radiating fin (21).
4. The bottom-emptying split junction box of claim 2, wherein: and a pin (223) of the bypass diode (22) is an oblate plane, and the pin (223) is welded with the electric solder mask area (213).
5. The bottom-emptying split junction box of claim 4, wherein: the bypass diode (22) is an axial diode packaged with schottky R6.
6. The bottom-emptying split junction box of claim 1, wherein: the emptying distance of the bottom cover (5) is 4.4 mm.
7. The bottom-emptying split junction box of claim 2, wherein: the annular side wall (11) is further provided with an opening (12), and the radiating fin (21) is further provided with a U-shaped groove (222).
8. The bottom-emptying split junction box of claim 7, wherein: the cable (3) penetrates through the opening (12) and is connected with the electric conductor (2), and the pressing block (4) is arranged at the opening (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221399111.0U CN217428079U (en) | 2022-06-07 | 2022-06-07 | Split type terminal box soaks in bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221399111.0U CN217428079U (en) | 2022-06-07 | 2022-06-07 | Split type terminal box soaks in bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217428079U true CN217428079U (en) | 2022-09-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221399111.0U Active CN217428079U (en) | 2022-06-07 | 2022-06-07 | Split type terminal box soaks in bottom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217428079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118783886A (en) * | 2024-09-05 | 2024-10-15 | 常州九天新能源科技股份有限公司 | Low-cost three-part photovoltaic junction box |
-
2022
- 2022-06-07 CN CN202221399111.0U patent/CN217428079U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118783886A (en) * | 2024-09-05 | 2024-10-15 | 常州九天新能源科技股份有限公司 | Low-cost three-part photovoltaic junction box |
| CN118783886B (en) * | 2024-09-05 | 2025-01-28 | 常州九天新能源科技股份有限公司 | Low-cost three-part photovoltaic junction box |
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