CN218868197U - Plug-in photovoltaic junction box body - Google Patents
Plug-in photovoltaic junction box body Download PDFInfo
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- CN218868197U CN218868197U CN202223421026.2U CN202223421026U CN218868197U CN 218868197 U CN218868197 U CN 218868197U CN 202223421026 U CN202223421026 U CN 202223421026U CN 218868197 U CN218868197 U CN 218868197U
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- 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
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Abstract
Plug-in photovoltaic terminal box body relates to chip package technique. The base, the third metal piece and the fourth metal piece are arranged in the box body, the base is detachably and fixedly arranged in the box body, and the third mounting position and the fourth mounting position are arranged; the third metal piece is detachably and fixedly arranged on the third mounting position and is provided with a first metal inserting position; the fourth metal piece can be detachably and fixedly arranged on the fourth mounting position and is provided with a second metal inserting position. The third metal piece and the fourth metal piece are made of metal materials with high elasticity, such as beryllium copper; the third metal piece and the fourth metal piece of omega shape can be dismantled fixed the setting respectively on the base, have not only improved the stability and the reliability that third metal piece and fourth metal piece are connected, and the lid downwardly extending's of being convenient for is pegged graft the end and is pegged graft the end with it frequently plug moreover, and is safe in utilization stably.
Description
Technical Field
The invention relates to the technical field of chip packaging, in particular to a plug-in photovoltaic junction box body.
Background
With the rapid development of the photovoltaic industry in recent years, the competition of the photovoltaic market is more intense. The silicon wafer specification of the photovoltaic module is changed from 156mm to 182mm to 210 mm. The increase of the specification of the photovoltaic silicon wafer greatly improves the power generation power of the single-wafer assembly, so that the current of the photovoltaic assembly system is higher and higher, the short-circuit current of the photovoltaic assembly reaches 18.6A or higher at present, the photovoltaic assembly is used as a key accessory of a photovoltaic junction box, and the rapid improvement of the current also puts higher requirements on the performance of the photovoltaic assembly. Meanwhile, the strong competition of the domestic photovoltaic module market and the requirement of the flat price on the internet also put forward a more rigorous requirement on the cost of the photovoltaic junction box. Based on the requirements of cost and electrical property, the diode module is generally adopted as a protection device of the photovoltaic junction box in the market at present, so that the size of the photovoltaic junction box and the material BOM cost of the photovoltaic junction box can be greatly reduced, and the material usage amount of extra photovoltaic encapsulating silica gel and photovoltaic back panel gel required in the production process of a photovoltaic assembly manufacturer can be reduced.
The photovoltaic junction box comprises a box cover and a box body, wherein the box cover is detachably and fixedly arranged on the box body, and the diode module is packaged in the box cover and is respectively provided with a first inserting end and a second inserting end which extend out of the bottom of the box cover; the box body is internally provided with a splicing position matched with the first splicing end and the second splicing end. At present, the splicing position in the box body is usually manufactured in the box body through a single metal blade, and after long-term use, the problems of unstable connection, short service life and the like easily occur, and the later maintenance cost and the use stability are increased.
Disclosure of Invention
Aiming at the problems, the invention provides the plug-in type photovoltaic junction box body which is compact in structure, simple and convenient to install and use, convenient to disassemble and maintain, safe and stable to use.
The technical scheme of the invention is as follows: plug-in photovoltaic terminal box body, be equipped with in the box body:
the base is detachably and fixedly arranged in the box body and is provided with a third mounting position and a fourth mounting position;
the third metal piece is detachably and fixedly arranged on the third mounting position and is provided with a first metal inserting position; and the fourth metal piece is detachably and fixedly arranged on the fourth mounting position and is provided with a second metal inserting position.
Specifically, the third metal piece and the fourth metal piece are in an omega shape respectively.
Specifically, the third metal piece comprises a first connecting part, a U-shaped connecting part and a second connecting part which are connected in sequence;
a pair of symmetrically arranged clamping jaws are arranged in the U-shaped connecting portion, and a pair of clamping jaws form a first metal inserting position.
Specifically, the top of jack catch is the arc structure, and the outside direction of bottom is buckled.
Specifically, the jaw is provided with a plurality of spaced seams extending upwards from the bottom to form a plurality of single clamping pieces.
Specifically, a plurality of third limiting columns are arranged on the third mounting position, and a plurality of third limiting holes matched with the third limiting columns are formed in the third metal piece 210.
Specifically, a plurality of fourth limiting columns are arranged on the fourth mounting position, and a plurality of fourth limiting holes matched with the fourth limiting columns are formed in the fourth metal piece.
Specifically, the end part of the box body is provided with a wire outlet hole;
an upper pressing block fixedly connected with the box body is arranged on the wire outlet hole;
and a lower pressing block detachably and fixedly connected with the upper pressing block is arranged below the upper pressing block.
Specifically, the upper pressing block and the lower pressing block are detachably and fixedly connected through a buckle.
Specifically, the end of the third metal piece is provided with a tin storage tank which is used for being connected with the photovoltaic cable in a resistance welding mode.
The novel box body is internally provided with a base, a third metal piece and a fourth metal piece, wherein the base is detachably and fixedly arranged in the box body and is provided with a third mounting position and a fourth mounting position; the third metal piece is detachably and fixedly arranged on the third mounting position and is provided with a first metal inserting position; the fourth metal piece can be detachably and fixedly arranged on the fourth mounting position and is provided with a second metal inserting position. The third metal piece and the fourth metal piece are made of metal materials with high elasticity, such as beryllium copper; the third metal piece and the fourth metal piece of omega shape can be dismantled fixed the setting respectively on the base, have not only improved the stability and the reliability that third metal piece and fourth metal piece are connected, and the lid downwardly extending's of being convenient for is pegged graft the end and is pegged graft the end with it frequently plug moreover, and is safe in utilization stably.
Drawings
Figure 1 is a schematic perspective view of the present invention,
FIG. 2 is a schematic view of the disassembled state of the utility model,
figure 3 is a perspective view showing the structure of the cap,
figure 4 is a schematic view of the inside three-dimensional structure of the box cover,
figure 5 is a schematic perspective view of the inside of the box cover in a disassembled state,
FIG. 6 is a sectional view of the assembled case cover and case body;
in the figure 100, the lid of the box is shown,
110 is a first metal piece, 111 is a first plug end,
120 is a second metal piece, 121 is a second mating end,
130 is a chip, 131 is a connection pad,
140 is a heat sink, 150 is a thermally conductive protective material,
200 is a box body which is provided with a plurality of holes,
210 is a third metal piece, 211 is a first metal plug site, 212 is a rectangular hole,
220 is a fourth metal piece, 221 is a second metal plug-in position, 222 is a tin storage tank,
the reference numeral 230 is a base plate,
241 is an upper press block, 242 is a lower press block,
300 is a cable.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but 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. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The structure of the box body 200 of the scheme is shown in figures 1-2;
plug-in photovoltaic terminal box body, be equipped with in the box body 200:
the base 230 is detachably and fixedly arranged in the box body 200, and is provided with a third mounting position and a fourth mounting position;
the third metal piece 210 is detachably and fixedly arranged on the third mounting position and is provided with a first metal inserting position; and the fourth metal piece 220 is detachably and fixedly arranged on the fourth mounting position and is provided with a second metal inserting position 221.
The third metal part 210 and the fourth metal part 220 are respectively in an omega shape.
The third metal piece 210 and the fourth metal piece 220 are made of a metal material with high elasticity, such as beryllium copper; referring to fig. 2, the third metal part 210 and the fourth metal part 220 in the shape of Ω are respectively detachably and fixedly disposed on the base 230, which not only improves the stability and reliability of the connection between the third metal part 210 and the fourth metal part 220, but also facilitates frequent plugging and unplugging of the first plugging end and the second plugging end extending downward from the box cover 100, and is stable and safe in use.
Further optimizing, and improving the reliability of the connection of the first inserting end and the second inserting end with the corresponding inserting positions.
The third metal piece 210 comprises a first connecting part, a U-shaped connecting part and a second connecting part which are connected in sequence;
a pair of symmetrically arranged clamping jaws are arranged in the U-shaped connecting portion, and a pair of clamping jaws form a first metal inserting position.
The top of jack catch is the arc structure, and the outside direction of bottom is buckled.
The claw is provided with a plurality of spaced seams extending upwards from the bottom to form a plurality of single clamping pieces.
Further optimization, the convenience of maintenance and the accuracy of installation of the base 230 and the third metal piece 210 and the fourth metal piece 220 are improved.
The third installation position is provided with a plurality of third limiting columns, and the third metal piece 210 is provided with a plurality of third limiting holes matched with the third limiting columns.
The fourth mounting position is provided with a plurality of fourth limiting columns, and the fourth metal piece 220 is provided with a plurality of fourth limiting holes matched with the fourth limiting columns.
Further optimization, the convenience and aesthetic degree of the installation of the box body 200 are improved.
The end part of the box body 200 is provided with a wire outlet hole;
an upper pressing block 241 fixedly connected with the box body 200 is arranged on the wire outlet hole;
a lower pressing block 242 detachably and fixedly connected with the upper pressing block 241 is arranged below the upper pressing block 241.
The upper pressing block 241 and the lower pressing block 242 are detachably and fixedly connected through a buckle.
The end of the third metal piece 210 is provided with a tin storage tank 222 for connecting with a photovoltaic cable in a resistance welding manner. Rectangular holes 212 for the bus bars of the photovoltaic module to penetrate and be assembled and welded are respectively arranged on the third metal piece 210 and the fourth metal piece 220.
The use mode of the junction box in the scheme is that three junction boxes are connected as an example:
the first metal piece 110 in the first junction box is led out through a bus bar and is connected with the second metal piece 120 in the second junction box, the first metal piece 110 in the second junction box is connected with the second metal piece 120 in the third junction box, and the second metal piece 120 (negative pole) in the first junction box and the first metal piece 110 (positive pole) in the third junction box are led out through cables respectively.
The structure of the box cover 100 adapted to the present invention is shown in fig. 3-6;
the box cover 100 is internally provided with:
the first metal part 110 is fixedly arranged in the box cover 100, and is provided with a first inserting end 111 extending downwards; the first inserting end 111 is chamfered and flattened so as to be beneficial to realizing opposite insertion;
the second metal piece 120 and the first metal piece 110 are fixedly arranged in the box cover 100 at an interval, and a second inserting end 121 extending downwards is arranged;
the chip 130 is arranged on the first metal piece 110 and is connected with the second metal piece 120 through a connecting sheet 131; and
the box body 200 is detachably and fixedly connected with the box cover 100, and is provided with a first metal inserting position 211 matched with the first inserting end 111 and a second metal inserting position 221 matched with the second inserting end 121.
According to the scheme, the anode and the cathode of the diode functional region, namely the first metal part 110 and the second metal part 120, are manufactured by using metal conductive parts, the Schottky chip 130 is welded to the anode of the conductor, and the upper surface of the Schottky chip 130 and the cathode of the conductive parts are welded by using a high-temperature welding technology through a connecting sheet 131 to form a semi-finished product with the diode function. The semi-finished product with the diode function is assembled in the groove of the box cover 100 and filled with materials such as epoxy resin and silica gel, and heat conducting aluminum powder, graphene and the like can be added into the filling materials to increase the heat conductivity of the semi-finished product. After the filling process and the curing of the filling material are completed, the functional region of the diode core schottky chip 130 is protected and the connector structure formed by the exposed metal conductive member is exposed.
The metal conductive elements (the first metal element 110 and the second metal element 120) can be made of copper materials of the grades of T2\ H65\ C1920 and the like. The connecting sheet 131 can be made of a material having excellent conductivity, such as copper, gold, silver, or aluminum.
Further preferably, the first metal part 110 is plate-shaped and is provided with a first hollow part;
the first inserting end 111 is fixedly arranged at the first hollow part.
In the present embodiment, the first plugging terminal 111 is manufactured by the following steps: a rectangular cutting line is marked on the first metal piece 110, three sides of the rectangle are cut to form a plate-shaped first plug-in end 111, and the first plug-in end 111 is bent towards the first metal plug-in position 211 through a bending process. In this way, the material usage can be reduced, the connection stability of the first inserting end 111 can be improved, and the connection reliability of the heat-conducting protective material 150 and the first metal member 110 can be improved.
Further, a second hollow hole matched with the second metal part 120 is formed in the first metal part 110, so that the influence on the performance of the device caused by the overhigh local temperature between the second metal part 120 and the first metal part 110 is avoided.
Further, the positive side of the chip 130 is connected to the first metal member 110, and the negative side is connected to the second metal member 120 through the connecting piece 131.
The diode function is integrated on the photovoltaic wire box cover based on the chip low-voltage packaging technology, and the heat dissipation structure is arranged on the outer surface of the box cover, so that the box cover large-area heat dissipation sheet of the wire box is favorable for rapid heat dissipation, and higher rated current is realized. The conventional wire box needs to use two 180-mil-size chips to realize the 30A wire box, and the scheme can be used for realizing the 30A wire box by adopting a single 165-mil-size chip. The material cost of the chip can be greatly reduced.
Further preferably, the inner side wall of the box cover 100 is provided with a plurality of positioning parts;
the side of the first metal part 110 is provided with a plurality of positioning grooves adapted to the positioning portions.
Preferably, the top of the box cover 100 is provided with a heat sink 140 fixedly connected thereto, and the heat sink 140 may be made of aluminum, ceramic, or other materials with excellent heat dissipation properties.
Further, a heat-conducting protective material 150 for filling is provided in the box cover 100, and the heat-conducting protective material 150 is epoxy resin glue in the present case.
Preferably, a sealing groove is formed in the side of the box cover 100;
and a sealing ring matched with the box body 200 is arranged on the sealing groove, so that the sealing property of the box cover 100 is improved, and water vapor is prevented from entering.
Further, the cap 100 and the body 200 are detachably and fixedly connected by a snap.
The disclosure of the present application also includes the following points:
(1) The drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) In case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above are only the embodiments disclosed in the present application, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure shall be subject to the scope of the claims.
Claims (10)
1. Plug-in photovoltaic terminal box body, its characterized in that, be equipped with in the box body:
the base is detachably and fixedly arranged in the box body and is provided with a third mounting position and a fourth mounting position;
the third metal piece is detachably and fixedly arranged on the third mounting position and is provided with a first metal inserting position; and the fourth metal piece is detachably and fixedly arranged on the fourth mounting position and is provided with a second metal inserting position.
2. The pluggable photovoltaic junction box body of claim 1, wherein the third metal piece and the fourth metal piece are each omega-shaped.
3. The pluggable photovoltaic junction box body of claim 1, wherein the third metal piece comprises a first connecting part, a U-shaped connecting part and a second connecting part which are connected in sequence;
a pair of symmetrically arranged clamping jaws is arranged in the U-shaped connecting portion, and a pair of clamping jaws form a first metal inserting position.
4. The pluggable photovoltaic junction box body of claim 3, wherein the top of the clamping jaw is of an arc-shaped structure, and the bottom of the clamping jaw is bent towards the outside.
5. The pluggable photovoltaic junction box body according to claim 3 or 4, wherein the clamping jaws are provided with a plurality of spaced seams extending upwards from the bottom to form a plurality of single clamping pieces.
6. The plug-in photovoltaic junction box body according to claim 1, wherein a plurality of third limiting columns are arranged on the third mounting position, and a plurality of third limiting holes matched with the third limiting columns are arranged on the third metal piece (210).
7. The pluggable photovoltaic junction box body according to claim 1, wherein a plurality of fourth limiting posts are arranged on the fourth mounting position, and a plurality of fourth limiting holes matched with the fourth limiting posts are arranged on the fourth metal piece.
8. The pluggable photovoltaic junction box body according to claim 1, wherein an outlet hole is formed in an end of the box body;
an upper pressing block fixedly connected with the box body is arranged on the wire outlet hole;
and a lower pressing block detachably and fixedly connected with the upper pressing block is arranged below the upper pressing block.
9. The pluggable photovoltaic junction box body of claim 8, wherein the upper pressing block and the lower pressing block are detachably and fixedly connected through a buckle.
10. The pluggable photovoltaic junction box body of claim 1, wherein the end of the third metal piece is provided with a tin storage groove for connecting with a photovoltaic cable in a resistance welding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223421026.2U CN218868197U (en) | 2022-12-17 | 2022-12-17 | Plug-in photovoltaic junction box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223421026.2U CN218868197U (en) | 2022-12-17 | 2022-12-17 | Plug-in photovoltaic junction box body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218868197U true CN218868197U (en) | 2023-04-14 |
Family
ID=87367128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223421026.2U Active CN218868197U (en) | 2022-12-17 | 2022-12-17 | Plug-in photovoltaic junction box body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218868197U (en) |
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2022
- 2022-12-17 CN CN202223421026.2U patent/CN218868197U/en active Active
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