CN220022745U - High-utilization-low-cost axial junction box - Google Patents
High-utilization-low-cost axial junction box Download PDFInfo
- Publication number
- CN220022745U CN220022745U CN202321284710.2U CN202321284710U CN220022745U CN 220022745 U CN220022745 U CN 220022745U CN 202321284710 U CN202321284710 U CN 202321284710U CN 220022745 U CN220022745 U CN 220022745U
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- conductor
- pin
- junction box
- utilization
- diode
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- 239000004020 conductor Substances 0.000 claims abstract description 91
- 239000007769 metal material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 238000003825 pressing Methods 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model relates to a high-utilization-low-cost axial junction box, which comprises a junction box body, an axial diode, a first conductor, a second conductor and two cables, wherein the axial diode is arranged in the junction box body and comprises a diode body, a first pin and a second pin; the first conductor is connected with the first pin, and is a cut-off part pressing piece of the first pin; the second conductor is connected with the second pin and is a cut-off part pressing piece of the second pin; two cables run through the terminal box body, and two cables are connected with the first electric conductor and the second electric conductor respectively. Compared with the prior art, the utility model efficiently utilizes the pins cut out from the two sides of the axial diode, greatly improves the utilization rate of the diode pins and reduces the material cost of the junction box; the axial diode can radiate heat more rapidly, and the electric utilization rate is improved, so that the axial diode can meet the application of large current.
Description
Technical Field
The utility model relates to the field of solar photovoltaic system devices, in particular to a high-utilization-rate low-cost axial junction box.
Background
As photovoltaic solar power generation applications become more popular, junction boxes closely related to the applications of the photovoltaic solar power generation are also continuously pushed into new ones. The performance and cost of the junction box are becoming more and more important.
The common photovoltaic junction box generally comprises a box body, a bypass diode, copper sheet conductive terminals, a cable and a connector, wherein the anode and the cathode of the bypass diode are respectively electrically connected with the copper sheet conductive terminals through a welding process and the like, a through-flow strap hole is formed in the copper sheet conductive terminals, a tin storage area is arranged on the copper sheet conductive terminals, and when the junction box is assembled with a photovoltaic module, a strap through hole of the module is formed in the copper sheet conductive terminals through the welding process, so that two pins of the diode are connected with the strap of the photovoltaic module. According to the design of the junction box, copper sheet conductive terminals are additionally added, and then the bypass diode and the positive and negative copper sheet conductive terminals are welded to form the bypass protection module. The production cost is high.
In order to promote popularization and use of green new energy, the reduction of the photovoltaic power generation cost is continuously pursued by the industry, so that the conventional photovoltaic module junction box is required to be optimally designed, and the production cost of the junction box is further reduced on the premise of ensuring the performance.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the axial junction box with high utilization rate and low cost, which efficiently utilizes the pins cut out from the two sides of the axial diode, greatly improves the utilization rate of the diode pins and reduces the material cost of the junction box.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a high-utilization-low-cost axial junction box, which comprises a junction box body, an axial diode, a first conductor, a second conductor and two cables, wherein the two cables comprise the following components:
the axial diode is arranged in the junction box body and comprises a diode body, a first pin and a second pin;
the first conductor is connected with the first pin, and is a cut-off part pressing piece of the first pin;
the second conductor is connected with the second pin, and is a cut-off part pressing piece of the second pin;
two cables run through the terminal box body, and two cables are connected with the first electric conductor and the second electric conductor respectively.
Further, the first conductor and the second conductor are sheet-shaped molded parts.
Further, through holes are formed in the first conductor and the second conductor.
Further, the first conductor and the second conductor are both installed in the junction box body through the through holes.
Further, a screw is arranged at the through hole, penetrates through the through hole and is fastened in the junction box body.
Further, the areas of the first conductor and the second conductor are 5-40 times of the diameters of the first pin and the second pin, and preferably 10-40 times.
Further, a wire outlet is formed in the junction box body, and one end of the cable extends out of the wire outlet and is connected with the positive electrode or the negative electrode of the photovoltaic module.
Further, the other end of the cable is soldered to the first conductor or the second conductor.
Further, the first pin, the second pin, the first conductor and the second conductor are all made of conductive metal materials.
The preparation method of the axial junction box comprises the following steps:
s1, placing an axial diode into cutting equipment, and cutting off a first cutting part and a second cutting part based on a preset cutting length;
s2: placing the first cut-off part and the second cut-off part into a die pressing device, and pressing the first cut-off part and the second cut-off part into a sheet-shaped first conductor and a sheet-shaped second conductor;
s3: fixing the first conductor, the second conductor and the axial diode in the junction box body, connecting the first conductor with the first pin, and connecting the second conductor with the second pin;
s4: two cables are connected to the first conductor and the second conductor, respectively.
Compared with the prior art, the utility model has the following technical advantages:
1) In this technical scheme, cut out some based on reasonable default size with the long pin in diode both sides, later with the pin compression molding that cuts out, regard the slice technique piece that will obtain as the electric conductor, later with axial diode both sides pin connect into an organic wholely to be connected through welding process and photovoltaic module busbar, compare in traditional terminal box, the efficient pin of cutting out of axial diode both sides that has utilized has improved the utilization ratio of diode pin greatly, has reduced the material cost of terminal box.
2) In the technical scheme, the first conductor, the second conductor and the axial diode are directly connected together through the first pin and the second pin, the connection distance between the first conductor and the second conductor and between the first pin and the second pin is short, heat is transferred through metal, and if a large heat dissipation area is used for heat dissipation, the heat dissipation can be carried out on the axial diode more rapidly, the electric utilization rate is improved, and the axial diode can meet the application of large current.
Drawings
FIG. 1 is a schematic structural diagram of a high utilization-low cost axial junction box according to the present disclosure;
fig. 2 is a schematic structural diagram of a diode before cutting in the present technical solution;
FIG. 3 shows a finished diode-conductor structure in the present embodiment;
fig. 4 is a schematic structural diagram of a junction box after encapsulation in the present technical solution.
In the figure: 1. the axial diode comprises an axial diode body 2, a junction box body 3, a first conductor 4, a second conductor 5, a cable 6, a face cover 21, a first pin 22, a second pin 23, a first cut-off part 24 and a second cut-off part.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. Features such as a part model, a material name, a connecting structure, an equipment model, a processing technology and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.
The high-utilization-low-cost axial junction box comprises a junction box body 2, an axial diode 1, a first conductor 3, a second conductor 4 and two cables 5, wherein the axial junction box is specifically shown in fig. 1.
The axial diode 1 is arranged in the junction box body 2, and the axial diode 1 comprises a diode body 11, a first pin 21 and a second pin 22; the first conductor 3 is connected with the first pin 21, and the first conductor 3 is a cut-off part pressed piece of the first pin 21; the second electrical conductor 4 is connected to the second pin 22, and the second electrical conductor 4 is a cut-off part of the second pin 22.
Two cables 5 penetrate through the junction box body 2, the two cables 5 are respectively connected with the first conductor 3 and the second conductor 4, only one cable 5 is shown in the figure by way of example, and the other cable 5 can be symmetrically installed in specific implementation. The first electrical conductor 3 and the second electrical conductor 4 are sheet-like mouldings. The first conductor 3 and the second conductor 4 are provided with through holes. The first conductor 3 and the second conductor 4 are both installed in the junction box body 2 through the through holes. The connection piece such as a conducting strip is not needed to be connected with the diode pins, so that the utilization rate of the diode pins is greatly improved, the material cost, the manufacturing cost and the assembly cost of the junction box are reduced, and the production and assembly time is shortened.
The through hole is provided with a screw which passes through the through hole and is fastened in the junction box body 2. The through holes may be realized by means of a compression mold or drilled after compression. The areas of the first conductor 3 and the second conductor 4 are 5 to 40 times, preferably 10 to 40 times, the diameters of the first pin 21 and the second pin 22, respectively. By shortening the pin length and integrally increasing the area of the pin end, a better heat dissipation effect can be provided for the diode 1. Namely, the first conductor 3 and the second conductor 4 are directly connected with the axial diode through the first pin 21 and the second pin 22, the connection distance between the first conductor 3 and the second conductor 4 and the first pin 21 and the second pin 22 is short, heat can be dissipated to the axial diode more quickly through metal heat transfer and if large heat dissipation area is used for dissipating heat, and the electric utilization rate is improved, so that the axial diode can meet the application of large current.
And an outlet is arranged on the junction box body 2, and one end of the cable 5 extends out of the outlet and is connected with the anode or the cathode of the photovoltaic module. The other end of the cable 5 is soldered to the first electrical conductor 3 or the second electrical conductor 4. The first pin 21, the second pin 22, the first conductor 3 and the second conductor 4 are all made of conductive metal materials.
The preparation method of the axial junction box comprises the following steps:
s1, placing an axial diode 1 into cutting equipment, wherein FIG. 2 is a schematic structural diagram of the diode before cutting in the technical scheme, and cutting off a first cutting part 23 and a second cutting part 24 based on a preset cutting length;
s2: placing the first cut-off part 23 and the second cut-off part 24 into a molding device, and pressing the first conductor 3 and the second conductor 4 into sheets;
s3: the first conductor 3, the second conductor 4 and the axial diode 1 are fixed in the junction box body 2, the first conductor 3 is connected with the first pin 21, the second conductor 4 is connected with the second pin 22, the connection can be brazing or hot melting connection, and compared with the traditional junction box, the diode-conductor structure processed in the technical scheme is shown in FIG. 3, pins cut out from two sides of the axial diode are utilized efficiently, the utilization rate of the diode pins is greatly improved, and the material cost of the junction box is reduced;
s4: two cables 5 are connected to the first conductor 3 and the second conductor 4, respectively.
Finally, the junction box body 2 can be encapsulated with an adapted cover 6, see fig. 4.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present utility model.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. A high utilization-low cost axial terminal block comprising:
a junction box body (2);
the axial diode (1) is arranged in the junction box body (2), and the axial diode (1) comprises a diode body (11), a first pin (21) and a second pin (22);
a first conductor (3) connected to the first pin (21), the first conductor (3) being a truncated part compact of the first pin (21);
a second electrical conductor (4) connected to the second pin (22), the second electrical conductor (4) being a truncated part extrusion of the second pin (22);
two cables (5) penetrate through the junction box body (2), and the two cables (5) are respectively connected with the first conductor (3) and the second conductor (4).
2. A high-utilization-low-cost axial terminal box according to claim 1, characterized in that said first (3) and second (4) electrical conductors are sheet mouldings.
3. A high-utilization-low-cost axial terminal box according to claim 1, characterized in that the first electrical conductor (3) and the second electrical conductor (4) are each provided with a through hole.
4. A high-utilization-low-cost axial terminal box according to claim 3, characterized in that said first electrical conductor (3) and second electrical conductor (4) are both mounted in the box body (2) through said through holes.
5. A high-utilization-low-cost axial terminal box according to claim 4, characterized in that said through-hole is provided with a screw which passes through said through-hole and is fastened in said box body (2).
6. The high-utilization-low-cost axial terminal box according to claim 1, wherein the areas of the first conductor (3) and the second conductor (4) are 5-40 times the diameters of the first pin (21) and the second pin (22), respectively.
7. The high-utilization-low-cost axial junction box according to claim 1, wherein the junction box body (2) is provided with an outlet, and one end of the cable (5) extends out from the outlet and is connected with the positive electrode or the negative electrode of the photovoltaic module.
8. A high-utilization-low-cost axial terminal box according to claim 7, characterized in that the other end of the cable (5) is welded to the first electrical conductor (3) or the second electrical conductor (4).
9. A high-utilization-low-cost axial terminal box according to claim 1, characterized in that said first (21), second (22), first (3) and second (4) conductors are all conductive metallic materials.
10. The high-utilization-cost axial terminal box according to claim 6, wherein the areas of the first conductor (3) and the second conductor (4) are 10-40 times the diameters of the first pin (21) and the second pin (22), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321284710.2U CN220022745U (en) | 2023-05-25 | 2023-05-25 | High-utilization-low-cost axial junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321284710.2U CN220022745U (en) | 2023-05-25 | 2023-05-25 | High-utilization-low-cost axial junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220022745U true CN220022745U (en) | 2023-11-14 |
Family
ID=88683114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321284710.2U Active CN220022745U (en) | 2023-05-25 | 2023-05-25 | High-utilization-low-cost axial junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220022745U (en) |
-
2023
- 2023-05-25 CN CN202321284710.2U patent/CN220022745U/en active Active
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