CN211208740U - Novel terminal structure of photovoltaic terminal box - Google Patents
Novel terminal structure of photovoltaic terminal box Download PDFInfo
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- CN211208740U CN211208740U CN201922414971.1U CN201922414971U CN211208740U CN 211208740 U CN211208740 U CN 211208740U CN 201922414971 U CN201922414971 U CN 201922414971U CN 211208740 U CN211208740 U CN 211208740U
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- metal sheet
- terminal
- diode
- bus bar
- photovoltaic
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Abstract
The utility model discloses a novel terminal structure of photovoltaic terminal box belongs to photovoltaic terminal box structural design field. The pins of the diode are directly welded below the terminal metal sheet of the welding bus bar, and the heat of the diode can be quickly conducted out through the bus bar; the contact surface of the diode pin and the terminal copper sheet is longer, the connecting surface which can be welded during resistance welding is larger, and more than two welding points are arranged, so that the heat of the diode is quickly conducted to the copper sheet for heat dissipation, and the possibility of thermal failure of the diode is reduced; the tail part of the terminal is reversely folded and downwards extended to increase the area, so that the radiating surface of the terminal is larger, the radiating performance is better, meanwhile, the length of the box body does not need to be lengthened, the radiating surface of the terminal is increased, and the cost is saved; the junction box is suitable for single-sided assembly installation and double-sided assembly installation, and one junction box is suitable for multiple assembly installation.
Description
Technical Field
The utility model belongs to the structural design field of photovoltaic terminal box, concretely relates to novel terminal structure of photovoltaic terminal box.
Background
The photovoltaic junction box is an important component of a solar power generation system for connecting a photovoltaic back sheet and an inverter. Through the development of many years, the performance and reliability of the photovoltaic junction box have been improved greatly, but the current photovoltaic junction box on the market has the following defects: heat dissipation problem; a large number of heating elements, such as diodes, are present inside the photovoltaic junction box, and a long-term thermal structure deforms the box body, so that the product fails, or the sealant cracks in the box body. Installation problems of different busbar assemblies; in practical application, the photovoltaic junction box is suitable for two components of a double-sided component bus belt and a single-sided component bus belt, the existing photovoltaic junction box structure cannot meet multiple application occasions simultaneously, different junction box structures need to be designed for different bus belt components of customers, and cost pressure is high.
Therefore, the photovoltaic junction box solves the problems, achieves miniaturization of the junction box, improves heat dissipation, ensures stability of the junction box performance, and reduces cost, and is a target to be achieved in the design of the photovoltaic junction box at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel terminal structure of photovoltaic terminal box to solve the problem that the present photovoltaic terminal box that proposes exists among the above-mentioned background art.
The technical scheme of the utility model as follows:
a novel terminal structure of a photovoltaic junction box comprises a terminal block, a diode and a bus bar, wherein the terminal block comprises a first metal sheet, a second metal sheet, a third metal sheet and a connecting strip, the first metal sheet and the third metal sheet are connected through the connecting strip, and the second metal sheet is located between the first metal sheet and the third metal sheet; the bus bar is welded on the first metal sheet and the second metal sheet; two pins of the diode are respectively welded below the second metal sheet and the third metal sheet, and the number of welding points between the pins of the diode and the second metal sheet or the third metal sheet is more than two; and the tail part of the third metal sheet is vertically bent to form a terminal reverse-bending lengthened surface.
Preferably, the bus bar is a single-side assembly bus bar, single-side assembly bus bar mounting jacks are respectively formed in the first metal sheet and the second metal sheet of the terminal block, and the single-side assembly bus bar is inserted into the single-side assembly bus bar mounting jacks on the first metal sheet and the second metal sheet and is welded with the surfaces of the first metal sheet and the second metal sheet.
Preferably, the bus bar is a double-sided assembly bus bar, and the double-sided assembly bus bar is inserted between the first metal sheet and the second metal sheet and is welded to the surfaces of the first metal sheet and the second metal sheet respectively.
Preferably, the two pins of the diode have the same or different lengths, and when the two pins of the diode have different lengths, the relatively shorter pin is welded to the second metal sheet, and the relatively longer pin is welded to the third metal sheet.
Preferably, the terminal block is connected with a photovoltaic cable, the first metal sheet is located at one end close to the photovoltaic cable, and the third metal sheet is located at one end far away from the photovoltaic cable.
The utility model has the beneficial technical effects that:
1. the pins of the diode are directly welded below the terminal metal sheet of the welding bus bar, and the heat of the diode can be quickly conducted out through the bus bar;
2. the two pins of the diode enable the contact surface of the pins of the diode and the terminal copper sheet to be longer by lengthening the length of the terminal block, the connecting surface which can be welded during resistance welding is larger, and more than two welding spots are arranged, so that the heat of the diode is quickly conducted to the copper sheet for heat dissipation, and the possibility of thermal failure of the diode is reduced;
3. the tail part of the terminal is reversely folded and downwards extended to increase the area, so that the radiating surface of the terminal is larger, the radiating performance is better, meanwhile, the length of the box body does not need to be lengthened, the radiating surface of the terminal is increased, and the cost is saved;
4. the junction box is suitable for single-sided assembly installation and double-sided assembly installation, and one junction box is suitable for multiple assembly installation.
Advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a structural view of the present invention.
Fig. 2 is an installation view of the present invention in a base of a junction box.
Fig. 3 is a view showing two types of mounting methods of the bus bar.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses an inside terminal structure of terminal box, including terminal piece, diode and the area of converging. Fig. 1 is an installation view of the terminal block, the bus bar, and the diode. Fig. 2 is an installation view of the terminal block, bus bar, diode in the terminal block base.
Referring to fig. 1 and 2, the terminal block includes a first metal sheet 1, a second metal sheet 2, a third metal sheet 3, and a connecting bar 4. Referring to fig. 2, when the terminal block is mounted in the junction box, the first metal sheet 1 is located near the cable end, i.e., the end of the photovoltaic cable 11 connected to the terminal block, and the third metal sheet 3 is located far from the cable end. Referring to fig. 1, the first metal sheet 1, the second metal sheet 2, and the third metal sheet 3 are not in contact with each other, the first metal sheet 1 and the third metal sheet 3 are connected together by a connecting strip 4, and the second metal sheet 2 is located between the first metal sheet 1 and the third metal sheet 3. Referring to fig. 1, a bus bar connecting block surface 5 is formed by vertically bending a side of the second metal sheet 2 facing the first metal sheet 1, a diode connecting block surface 6 is formed by vertically bending a side of the second metal sheet 2 facing the third metal sheet 3, and a diode connecting block surface 7 is formed by vertically bending a side of the third metal sheet 3 facing the second metal sheet 2. Referring to fig. 1, the length of the third metal sheet 3 is longer than that of the second metal sheet 2, and the tail of the third metal sheet 3 is vertically bent to form a terminal reverse-bending elongated surface 8.
Referring to fig. 1 and 2, the bus bars 9 are welded to the first metal sheet 1 and the second metal sheet 2, and since the welding ends of the bus bars 9 are close to the cable ends and are close to each other, the generated heat can be rapidly conducted out through the photovoltaic cables 11. Referring to fig. 1, two sides of a main body of a diode 10 are respectively abutted against two diode connection blocking surfaces 6 and 7, two pins of the diode 10 are long and short, and the short pins are directly welded below a second metal sheet 2 welded with a bus bar 9, so that heat of the diode 10 can be quickly conducted out through the bus bar 9; the long pin of the diode 10 is welded below the third metal sheet 3, the connectable area during resistance welding is large, and more than one welding point can be realized; by lengthening the length of the third metal sheet 3, the contact surface between the long pin of the diode 10 and the third metal sheet 3 is longer, so that the heat of the diode 10 can be quickly conducted to the third metal sheet 3 for heat dissipation, and the possibility of thermal failure of the diode is reduced. Referring to fig. 1, the tail of the third metal sheet 3 is bent back to extend the area and increase the heat dissipation surface of the terminal block, so that the heat dissipation surface of the terminal block is larger and better, meanwhile, the length of the box body does not need to be increased, the heat dissipation surface of the terminal block is increased, and the cost is saved.
Referring to fig. 3, the junction box is suitable for single-sided assembly installation and double-sided assembly installation, and one junction box is suitable for multiple assembly installation. Respectively arranging a single-side assembly bus bar mounting jack 30 on a first metal sheet 1 and a second metal sheet 2 of a terminal block, inserting two single-side assembly bus bars 31 into the single-side assembly bus bar mounting jacks 30 on the first metal sheet 1 and the second metal sheet 2 when the single-side assembly bus bars need to be mounted, and then respectively bending and welding the single-side assembly bus bars with the surfaces of the first metal sheet 1 and the second metal sheet 2; and when the double-sided assembly bus strips need to be installed, the two double-sided assembly bus strips 32 are inserted between the first metal sheet 1 and the second metal sheet 2 and then are respectively bent to be welded with the surfaces of the first metal sheet 1 and the second metal sheet 2. In fig. 3, the bus bar is inserted only and not bent, and the bending and welding can be seen in fig. 2.
What has been described above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.
Claims (5)
1. The utility model provides a novel terminal structure of photovoltaic terminal box, includes terminal block, diode and converges and take, its characterized in that: the terminal block comprises a first metal sheet, a second metal sheet, a third metal sheet and a connecting strip, the first metal sheet and the third metal sheet are connected through the connecting strip, and the second metal sheet is located between the first metal sheet and the third metal sheet; the bus bar is welded on the first metal sheet and the second metal sheet; two pins of the diode are respectively welded below the second metal sheet and the third metal sheet, and the number of welding points between the pins of the diode and the second metal sheet or the third metal sheet is more than two; and the tail part of the third metal sheet is vertically bent to form a terminal reverse-bending lengthened surface.
2. The novel terminal structure of a photovoltaic junction box as claimed in claim 1, wherein: the bus bar is a single-side assembly bus bar, single-side assembly bus bar mounting jacks are respectively formed in the first metal sheet and the second metal sheet of the terminal block, and the single-side assembly bus bar is inserted into the single-side assembly bus bar mounting jacks on the first metal sheet and the second metal sheet and is welded with the surfaces of the first metal sheet and the second metal sheet.
3. The novel terminal structure of a photovoltaic junction box as claimed in claim 1, wherein: the bus bar is a double-sided assembly bus bar, and the double-sided assembly bus bar is inserted between the first metal sheet and the second metal sheet and is respectively welded with the surfaces of the first metal sheet and the second metal sheet.
4. The novel terminal structure of a photovoltaic junction box as claimed in claim 1, wherein: the two pins of the diode are the same in length or different in length, when the two pins of the diode are different in length, the relatively shorter pin is welded with the second metal sheet, and the relatively longer pin is welded with the third metal sheet.
5. The novel terminal structure of a photovoltaic junction box as claimed in claim 1, wherein: the terminal block is connected with the photovoltaic cable, the first metal sheet is located at one end close to the photovoltaic cable, and the third metal sheet is located at one end far away from the photovoltaic cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922414971.1U CN211208740U (en) | 2019-12-29 | 2019-12-29 | Novel terminal structure of photovoltaic terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922414971.1U CN211208740U (en) | 2019-12-29 | 2019-12-29 | Novel terminal structure of photovoltaic terminal box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211208740U true CN211208740U (en) | 2020-08-07 |
Family
ID=71888396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922414971.1U Active CN211208740U (en) | 2019-12-29 | 2019-12-29 | Novel terminal structure of photovoltaic terminal box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211208740U (en) |
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2019
- 2019-12-29 CN CN201922414971.1U patent/CN211208740U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230814 Address after: No. 2, Xiabao Road, Yueqing Bay Port District, Yueqing, Wenzhou City, Zhejiang Province 325600 Patentee after: Zhejiang Zhengtai Xinhui Photovoltaic Co.,Ltd. Address before: 325600 No. 192 Lane 22, Weisan Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG XINHUI PHOTOVOLTAIC TECHNOLOGY CO.,LTD. |