High-performance photovoltaic junction box
By using screws to fix the terminals, diodes, and busbars in the photovoltaic junction box, the problem of poor soldering caused by welding is solved, resulting in a more stable connection, lower cost, and improved processing efficiency.
Patent Information
- Application Number
- CN202422862726.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-23
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-11-23
AI Technical Summary
In existing three-part photovoltaic junction boxes, the busbars are connected by welding, which is prone to poor soldering, resulting in higher costs and slower processing speeds.
The terminals, diodes, and busbars are connected by screw fixing. The connection ends of the terminals, the pins of the diodes, and the ends of the busbars are placed in the positioning groove, and threaded holes are made in the conductive sheet to achieve a stable connection and avoid welding.
It avoids the problem of incomplete soldering, resulting in a more stable connection, reduced costs, and improved processing efficiency and ease of assembly.
Smart Images
Figure CN223666308U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic junction box technical field, concretely is a kind of high-performance photovoltaic junction box. BACKGROUND
[0002] Traditional photovoltaic junction box is usually a whole structure, inside contains one or more diodes and positive and negative cable, suitable for connecting single photovoltaic module, due to its integrated design, it can cause heat concentration in some cases, affect the overall efficiency of system, and in some cases, it can cause inconvenience in maintenance, because the whole system needs to be closed to maintain.
[0003] Three-part photovoltaic junction box is a junction box developed for the shortcomings of integrated, this junction box is composed of three independent junction boxes (positive box, negative box and middle box), each junction box is responsible for connecting a group of photovoltaic modules, this split design makes each junction box has higher stability and flexibility while bearing the same power conversion task, and due to its split design, it can better adapt to different types of photovoltaic modules, optimize system layout, improve system efficiency, effectively improve the performance of junction box.
[0004] And the other end of the first metal sheet and the second metal sheet inside the existing three-part photovoltaic junction box is bent to form a first wiring board, the first wiring board is used to connect the external bus bar, a first perforation is arranged on each first wiring board, a first welding groove is concave on one side of the first perforation, to ensure the welding area of the bus bar, and the welding is firm;That is, the existing bus bar is connected by welding, which is easy to have a virtual welding phenomenon, affects the use effect, and the welding method has large cost and slow processing speed. UTILITY MODEL CONTENTS
[0005] The technical problem to be solved by the utility model is that the existing three-part photovoltaic junction box bus bar is connected by welding, which is easy to have a virtual welding phenomenon, has large cost and slow processing speed.
[0006] In order to solve the above problems, the technical scheme of the utility model is as follows: a high-performance photovoltaic junction box, comprising a positive box, a negative box and a middle box, the positive box, the negative box and the middle box all comprise a box body and a box cover, the box body is internally provided with a conductive sheet and a diode, a through slot is formed in the bottom surface of the box body, two positioning seats for mounting the conductive sheet are mounted on the box body above the through slot, a supporting seat for supporting the diode is arranged between the two positioning seats, positioning grooves are symmetrically formed on the top surface of the positioning seat on both sides, and a bus bar interface is formed in the middle of the positioning seat, a connecting pipe is fixedly connected to one end of the positive box and the negative box, and a wiring terminal is mounted in the connecting pipe, a plurality of slot openings are formed in the front end surface of the connecting pipe, a cap is mounted on the connecting pipe, and the inner bottom of the cap is provided with a chamfer.
[0007] Further, the box cover is clamped in the box body, and a glue injection opening is arranged at one end of the box cover, and a plurality of limiting columns for limiting the box cover are fixedly connected to the edge of the box body.
[0008] Further, the box body is fixedly connected with the protrusions at both ends, and grooves matched with the protrusions are arranged on the inner walls of the both ends of the box body.
[0009] Further, the ear plate is fixedly connected to the lower part of one end of the box body of the middle box, and a current flow direction mark is arranged on the ear plate.
[0010] Further, threaded holes are arranged at four corners of the positioning seat and the middle part of the positioning groove, and through holes matched with the threaded holes are arranged on the conductive sheet.
[0011] Further, the diode is a packaged diode, the pin of the packaged diode is in a sheet structure and is arranged in the positioning groove, and the connecting end of the wiring terminal is arranged in the positioning groove, and the pin of the packaged diode and the connecting end of the wiring terminal are all arranged with mounting holes matched with the threaded holes.
[0012] Compared with the prior art, the utility model has the advantages that the end of the wiring terminal, the pin of the diode and the end of the bus bar are arranged in the positioning groove, the conductive sheet is arranged on the top of the positioning seat and is fixed through a screw, the connection and fixation of the wiring terminal, the diode and the bus bar can be realized, the welding fixation is not needed, virtual welding is avoided, the connection is more stable, the use effect is better, the welding raw material is saved, the cost is reduced, the connection and processing are more convenient, the assembly is convenient, the processing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is the structural diagram of the utility model.
[0014] Figure 2 is the split structure diagram of the box body and the box cover of the utility model.
[0015] Figure 3 is the sectional view of the box body of the utility model Figure 1 .
[0016] Figure 4 is the sectional view of the box body of the utility model Figure 2 .
[0017] As shown in the drawings: 1, box body; 2, box cover; 3, conductive sheet; 4, diode; 5, positioning seat; 6, support seat; 7, connecting pipe; 8, wiring terminal; 9, cap; 10, limiting column; 11, protrusion; 12, ear plate. DETAILED DESCRIPTION
[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments; based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0019] As shown in Figures 1 to 4 A high-performance photovoltaic junction box, comprising a positive box, a negative box and an intermediate box, the positive box, the negative box and the intermediate box all comprise a box body 1 and a box cover 2, the box cover 2 is clamped in the box body 1, and one end of the box cover 2 is provided with a glue injection port, a plurality of limiting columns 10 for limiting the box cover 2 are fixedly connected to the inner edge of the box body 1, the two ends of the box body 1 are fixedly connected with protrusions 11, recesses matched with the protrusions 11 are formed in the inner walls of the two ends of the box body 1, conductive sheets 3 and diodes 4 are installed in the box body 1, a through slot is formed in the bottom surface of the box body 1, two positioning seats 5 for installing the conductive sheets 3 are installed above the through slot in the box body 1, a supporting seat 6 for supporting the diodes 4 is arranged between the two positioning seats 5, and an ear plate 12 is fixedly connected to the lower part of one end of the box body 1 of the intermediate box, and a current flow direction mark is arranged on the ear plate 12.
[0020] The protrusions 11 and the recesses can preliminarily fix the box cover 2, and the limiting columns 10 can prevent the box cover 2 from being extruded by external force and extruding the components in the box body 1.
[0021] As shown in Figure 3 and Figure 4 The top surface of the positioning seat 5 is symmetrically provided with positioning grooves on both sides, and a bus bar interface is formed in the middle of the positioning seat 5, screw holes are formed in the four corners of the positioning seat 5 and the middle of the positioning groove, through holes matched with the screw holes are formed in the conductive sheet 3, the diode 4 is a packaged diode, the pin of the diode 4 is a sheet structure and is placed in the positioning groove, and the connecting end of the wiring terminal 8 is placed in the positioning groove, and the pin of the packaged diode and the connecting end of the wiring terminal 8 are both provided with mounting holes matched with the screw holes.
[0022] One end of the wiring terminal 8 is connected to a wire, the other end is placed in the positioning groove, the diode 4 is placed on the supporting seat 6, and the two pins of the diode 4 are placed in the positioning groove, the bus bar interface is formed in the middle of the positioning seat 5, when the bus bar is connected, the end of the bus bar is bent and placed in the positioning groove, the conductive sheet 3 is placed on the top of the positioning seat 5 and fixed by a screw, and the connection and fixation of the wiring terminal, the diode 4 and the bus bar can be realized.
[0023] As shown in Figure 1 , Figure 2 andFigure 3 As shown, one end of the positive electrode box and the negative electrode box is fixed with a connecting pipe 7 outside, and a wiring terminal 8 is installed inside, a plurality of notches are formed in the front end face of the connecting pipe 7, and a cap 9 is installed on the connecting pipe 7, and the inner bottom of the cap 9 is chamfered.
[0024] When the cap 9 is tightened, the front end of the connecting pipe 7 is bent inward along the chamfer, so that the front end of the connecting pipe 7 presses the lead wire, thereby achieving the fixation of the lead wire and effectively preventing the poor contact or falling off of the lead wire from the wiring terminal 8 due to the tension of the external lead wire.
[0025] In specific use, the end of a lead wire is connected to the wiring terminal 8 after being inserted through the cap 9 and the connecting pipe 7, the other end of the wiring terminal 8 is placed in the positioning groove, the diode 4 is placed on the support seat 6 and its two pins are placed in the positioning groove, the bus bar interface is formed in the middle of the positioning seat 5, the end of the bus bar is bent and placed in the positioning groove when the bus bar is connected, and the conductive sheet 3 is placed on the top of the positioning seat 5 and fixed by a screw, so that the connection and fixation of the wiring terminal, the diode 4 and the bus bar are achieved; without welding fixation, virtual welding is avoided, the connection is more stable, the use effect is better, the welding raw materials are saved, the cost is reduced, the connection and processing are more convenient, the assembly is convenient, and the processing efficiency is improved.
[0026] The undisclosed parts in the utility model are all prior art, and the specific structure and working principle will not be described again.
[0027] It should be noted that, in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.
[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
[0029] The above has described the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.
Claims
1. A high-performance photovoltaic junction box, comprising a positive electrode box, a negative electrode box and a middle box, the positive electrode box, the negative electrode box and the middle box each comprising a box body (1) and a box cover (2), the box body (1) is internally provided with a conductive sheet (3) and a diode (4), characterized in that: The box body (1) bottom surface is provided with a through slot, and two positioning seats (5) for mounting the conductive sheet (3) are mounted above the through slot in the box body (1), a supporting seat (6) for supporting the diode (4) is arranged between the two positioning seats (5), the top surface of the positioning seat (5) is symmetrically provided with a positioning groove on both sides, and a bus bar interface is arranged in the middle of the positioning seat (5), one end of the positive electrode box and the negative electrode box is externally fixed with a connecting pipe (7), and the connecting pipe (7) is internally mounted with a wiring terminal (8), a plurality of notches are arranged on the front end face of the connecting pipe (7), a cap (9) is mounted on the connecting pipe (7), and the inner bottom of the cap (9) is provided with a chamfer.
2. A high performance photovoltaic junction box according to claim 1, characterized in that: The box cover (2) is clamped in the box body (1), and one end of the box cover (2) is provided with a glue injection port, a plurality of limiting columns (10) for limiting the box cover (2) are fixedly connected to the inner edge of the box body (1).
3. A high performance photovoltaic junction box according to claim 2, characterized in that: The box body (1) is fixedly connected with a protruding block (11) at both ends, and a groove matched with the protruding block (11) is arranged on the inner wall of the box body (1) at both ends.
4. A high performance photovoltaic junction box according to claim 1, characterized in that: The ear plate (12) is fixedly connected to the lower part of one end of the box body (1) of the intermediate box, and the ear plate (12) is provided with a current flow direction mark.
5. A high performance photovoltaic junction box according to claim 1, characterized in that: Threaded holes are arranged in the four corners of the positioning seat (5) and the middle of the positioning groove, and a through hole matched with the threaded hole is arranged on the conductive sheet (3).
6. A high performance photovoltaic junction box according to claim 5, characterized in that: The diode (4) is a packaged diode, the pin of the diode (4) is in a sheet structure and is placed in the positioning groove, the connecting end of the wiring terminal (8) is placed in the positioning groove, and the pin of the packaged diode and the connecting end of the wiring terminal (8) are both provided with mounting holes matched with the threaded holes. The diode (4) is a packaged diode, the pin of the diode (4) is in a sheet structure and is placed in the positioning groove, the connecting end of the wiring terminal (8) is placed in the positioning groove, and the pin of the packaged diode and the connecting end of the wiring terminal (8) are both provided with mounting holes matched with the threaded holes.