A three-dimensional heat dissipation layout axial diode flattening junction box

Abstract

The utility model discloses a kind of axial diode flat jointing box of three-dimensional heat dissipation layout, including the first polarity terminal box and the second polarity terminal box being composed of box body and face cover, and two ends are respectively connected with female connector, male connector of pair of insertion connection, first intermediate conducting sheet is provided in the first polarity terminal box, at least two groups of axial diode are respectively provided in first intermediate conducting sheet two sides, the axial diode includes first pin and the second pin of center punching, the second pin of two groups of axial diode is overlapped and installed above first intermediate conducting sheet, two groups of axial diode top are respectively provided with the profiled conducting sheet in the stack structure with corresponding axial diode;Second intermediate conducting sheet is provided in the second polarity terminal box, axial diode is provided on the side of second intermediate conducting sheet, axial diode top is provided with the profiled conducting sheet in the stack structure with corresponding axial diode.The utility model uses two split body scheme, for adapting new battery piece layout, three-dimensional heat dissipation mode is used simultaneously, internal heat dissipation is strengthened, so as to reach better thermal performance.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic junction box technology, and in particular to an axial diode flattened junction box with a three-dimensional heat dissipation layout. Background Technology

[0002] To improve the overall power output of photovoltaic (PV) modules, many modules have undergone design optimizations, employing more efficient cell layouts, advanced encapsulation technologies, and improved photoelectric conversion efficiency. However, existing three-part junction boxes are no longer sufficient to meet the demands of modern PV systems in practical installations for some new cell layouts. Furthermore, as module power increases, the requirements for junction box current carrying capacity, heat dissipation performance, and reliability are also rising. Traditional junction boxes are proving inadequate in handling higher power outputs, more parallel modules, and more demanding environmental conditions. Therefore, a more advanced junction box design is urgently needed to adapt to the ever-growing demands of PV systems. Utility Model Content

[0003] To address the aforementioned technical problems, an axial diode flattened junction box with a three-dimensional heat dissipation layout is provided.

[0004] To achieve the above objectives, this utility model discloses a three-dimensional heat dissipation layout axial diode flattened junction box, including a first polarity junction box and a second polarity junction box composed of a box body and a cover, with female and male connectors respectively connected to both ends for plug-in connection. The first polarity junction box is provided with a first intermediate conductive sheet, and at least two sets of axial diodes are respectively provided on both sides of the first intermediate conductive sheet. The axial diodes include a first lead and a second lead with a central hole. The second leads of the two sets of axial diodes are overlapped and installed above the first intermediate conductive sheet. The top of the two sets of axial diodes is provided with irregularly shaped conductive sheets that are stacked with the corresponding axial diodes. The second polarity junction box is provided with a second intermediate conductive sheet, and axial diodes are provided on the side of the second intermediate conductive sheet. The top of the axial diodes is provided with irregularly shaped conductive sheets that are stacked with the corresponding axial diodes.

[0005] Furthermore, the irregular conductive sheet includes a first connecting portion and a support portion coplanar with the first connecting portion. The side of the support portion away from the first connecting portion is provided with a bending portion that connects to the second connecting portion. The height of the second connecting portion is lower than that of the first connecting portion. The first connecting portion is located above the second pin of the axial diode and overlaps the protrusions on both sides of the first intermediate conductive sheet. The second connecting portion is connected to the first pin of the axial diode.

[0006] Furthermore, the first connecting part has upwardly bent flanges on both the front and rear sides.

[0007] Furthermore, the irregularly shaped conductive sheet in the second polarity junction box is installed in the same way as the irregularly shaped conductive sheet in the first polarity junction box.

[0008] Furthermore, the two sets of axial diodes in the first polarity junction box are installed in a staggered manner, the first intermediate conductive plate is installed at the bottom inside the first polarity junction box through a positioning post, and the second pin of the axial diode is installed at the top of the first intermediate conductive plate through one of the positioning posts.

[0009] Furthermore, the second connection portion of the irregularly shaped conductive sheet inside the first polarity junction box, near the cable side, is simultaneously connected to the first pin and the cable.

[0010] Furthermore, at least four sets of outlets connected to the busbar are provided at the center of the first intermediate conductive sheet and the two side protrusions of the second intermediate conductive sheet.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses an axial diode flattened junction box with a three-dimensional heat dissipation layout. It adopts a two-part scheme to adapt to the new battery cell layout. The three-dimensional conductive sheet and the bottom axial diode form a stacked structure to enhance internal heat dissipation and achieve better thermal performance. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is an overall layout diagram of Embodiment 1 of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the first polarity junction box in Embodiment 1 of this utility model (without the cover).

[0015] Figure 3 This is a schematic diagram of the structure of the second polarity junction box in Embodiment 1 of this utility model (without the cover).

[0016] Figure 4 This is a schematic diagram of the axial diode installation according to Embodiment 1 of this utility model.

[0017] Figure 5 This is a schematic diagram of the heat dissipation path of this utility model.

[0018] Figure 6 This is a schematic diagram of the irregularly shaped conductive sheet structure of this utility model.

[0019] In the diagram: 1 is the first polarity junction box; 11 is the first intermediate conductive piece; 12 is the boss; 13 is the cable outlet; 2 is the second polarity junction box; 21 is the second intermediate conductive piece; 3 is the axial diode; 31 is the first pin; 32 is the second pin; 4 is the irregular conductive piece; 41 is the first connecting part; 42 is the supporting part; 43 is the bending part; 44 is the second connecting part; 45 is the flange. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Embodiment 1 of this utility model, as follows: Figure 1 , Figure 2 and Figure 3 As shown, the first polarity junction box is a negative junction box, and the second polarity junction box is a positive junction box. A first intermediate conductive plate 11 is disposed inside the first polarity junction box 1. At least two sets of axial diodes 3 are disposed on both sides of the first intermediate conductive plate 11. The first intermediate conductive plate is U-shaped. Each axial diode 3 includes a first pin 31 and a second pin 32 with a central hole. The second pins 32 of the two sets of axial diodes 3 are overlapped and mounted above both sides of the first intermediate conductive plate 11. A non-circular conductive plate 4, stacked with the corresponding axial diode 3, is disposed on the top of each of the two sets of axial diodes 3. The second polarity junction box 2 is disposed inside the second intermediate conductive plate 21. Axial diodes 3 are disposed on the sides of the second intermediate conductive plate 21. A non-circular conductive plate 4, stacked with the corresponding axial diode 3, is disposed on the top of the axial diode 3. Figure 5 As shown, the stacked layout minimizes the concentration of conductive sheets and diversifies the heat dissipation pathways. In this embodiment, the traditional negative terminal box and intermediate terminal box are combined into a first polarity terminal box, adopting a two-part design to adapt to the new battery cell layout, reduce the number of boxes, and lower the box volume. At the same time, a three-dimensional heat dissipation method is adopted to enhance internal heat dissipation and achieve better thermal performance.

[0022] like Figure 6 As shown, the irregularly shaped conductive sheet 4 includes a first connecting portion 41 and a supporting portion 42 coplanar with the first connecting portion 41. The supporting portion is mounted as shown in the figure. Figure 2 and Figure 4The positioning post with a support platform is located in front of the left axial diode, ensuring that the support part and the first connecting part are installed horizontally. The side of the support part 42 away from the first connecting part 41 is provided with a bending part 43 that connects to the second connecting part 44. The height of the second connecting part 44 is lower than that of the first connecting part 41, forming a three-dimensional conductive sheet structure. The first connecting part 41 is located above the second pin 32 of the axial diode 3 and overlaps the protrusions 12 on both sides of the first intermediate conductive sheet 11. The second connecting part 44 is connected to the first pin 31 of the axial diode 3.

[0023] The first connecting part 41 has upwardly bent flanges 45 on both the front and rear sides to restrict the flow area of ​​solder and prevent it from falling onto the pins below and the first central conductive sheet.

[0024] The irregularly shaped conductive sheet 4 in the second polarity junction box 2 is installed in the same way as the irregularly shaped conductive sheet 4 in the first polarity junction box 1. The support part is installed on the positioning post, the first connection part is located above the second pin, and the second connection part is in contact with the first pin.

[0025] The two sets of axial diodes 3 inside the first polarity junction box 1 are installed in a staggered manner to increase the distance between the two sets of axial diodes and avoid interference between them. The first intermediate conductive plate 11 is installed at the bottom inside the first polarity junction box 1 through a positioning post. The second pin 32 of the axial diode 3 passes through one of the positioning posts and is installed on the top of the first intermediate conductive plate 11. The second connecting part 44 of the irregular conductive plate 4 near the cable side inside the first polarity junction box 1 is simultaneously connected to the first pin 31 and the cable.

[0026] like Figure 4 As shown, at least four sets of outlet ports 13 connected to the busbars are provided at the center of the first intermediate conductive sheet 11 and the second intermediate conductive sheet 21 and on the two side protrusions 12. These include two sets of outlet ports arranged horizontally and two sets of outlet ports arranged vertically. In traditional structures, each junction box has at least four sets of outlet ports, and the large number of busbars affects wiring efficiency. In this embodiment, the intermediate junction box and the negative junction box share one set of outlet ports. The busbars can also be combined and connected to the horizontally arranged set of outlet ports. A single junction box can achieve three or four outlets, making maintenance and testing more convenient.

[0027] The difference between Embodiment 2 and Embodiment 1 is that the first polarity junction box is a combined structure of a positive junction box and an intermediate junction box, and the second polarity junction box is a negative junction box, which enriches the types of junction boxes and expands the application range of junction boxes.

[0028] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0029] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A three-dimensional heat dissipation layout axial diode flattened junction box, comprising a first polarity junction box (1) and a second polarity junction box (2) consisting of a box body and a cover, and having a female connector and a male connector respectively connected to both ends for plug-in connection, characterized in that, The first polarity junction box (1) is provided with a first intermediate conductive sheet (11), and at least two sets of axial diodes (3) are provided on both sides of the first intermediate conductive sheet (11). The axial diodes (3) include a first pin (31) and a second pin (32) with a central hole. The second pins (32) of the two sets of axial diodes (3) are connected and installed above the first intermediate conductive sheet (11). The top of the two sets of axial diodes (3) is provided with a non-shaped conductive sheet (4) that is stacked with the corresponding axial diode (3). The second polarity junction box (2) is provided with a second intermediate conductive sheet (21), and axial diodes (3) are provided on the side of the second intermediate conductive sheet (21). The top of the axial diodes (3) is provided with a non-shaped conductive sheet (4) that is stacked with the corresponding axial diode (3).

2. The axial diode flattened junction box with a three-dimensional heat dissipation layout according to claim 1, characterized in that, The irregular conductive sheet (4) includes a first connecting part (41) and a support part (42) coplanar with the first connecting part (41). The support part (42) has a bending part (43) on the side away from the first connecting part (41) and is connected to the second connecting part (44). The height of the second connecting part (44) is lower than that of the first connecting part (41). The first connecting part (41) is located above the second pin (32) of the axial diode (3) and overlaps the bosses (12) on both sides of the first intermediate conductive sheet (11). The second connecting part (44) is connected to the first pin (31) of the axial diode (3).

3. An axial diode flattened junction box with a three-dimensional heat dissipation layout according to claim 2, characterized in that, The first connecting part (41) has upwardly bent flanges (45) on both the front and rear sides.

4. An axial diode flattened junction box with a three-dimensional heat dissipation layout according to claim 1, characterized in that, The irregular conductive sheet (4) in the second polarity junction box (2) is installed in the same way as the irregular conductive sheet (4) in the first polarity junction box (1).

5. An axial diode flattened junction box with a three-dimensional heat dissipation layout according to claim 1, characterized in that, The two sets of axial diodes (3) in the first polarity junction box (1) are installed in a staggered manner. The first intermediate conductive plate (11) is installed at the bottom inside the first polarity junction box (1) through a positioning post. The second pin (32) of the axial diode (3) passes through one of the positioning posts and is installed on the top of the first intermediate conductive plate (11).

6. An axial diode flattened junction box with a three-dimensional heat dissipation layout according to claim 5, characterized in that, The second connection part (44) of the irregular conductive sheet (4) near the cable side inside the first polar junction box (1) is simultaneously connected to the first pin (31) and the cable.

7. An axial diode flattened junction box with a three-dimensional heat dissipation layout according to claim 1, characterized in that, At least four sets of outlet ports (13) connected to the busbar are provided on the center position of the first intermediate conductive sheet (11) and the second intermediate conductive sheet (21) and on the two side protrusions (12).

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