Photovoltaic junction box

Abstract

The utility model relates to the field of photovoltaic technology, and provides a photovoltaic junction box which comprises a box body, the box body is provided with an installation cavity, one side of the installation cavity protrudes outwards to form a containing cavity, a receding groove is formed in the bottom of the box body in a penetrating mode, and the receding groove extends to the containing cavity along the installation cavity. A module assembly or an axial assembly is arranged in the mounting cavity, the module assembly comprises a module metal support and a module diode, and the axial assembly comprises an axial metal support and an axial diode; when the module diode is installed, the module diode is located in the installation cavity. When the axial diode is installed, the axial diode is partially located in the containing cavity and contained in the receding groove. Therefore, the photovoltaic junction box can be compatible with a module diode and an axial diode, and the application flexibility of the photovoltaic junction box is improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaics, and in particular to a photovoltaic junction box. Background Technology

[0002] Modular diodes and axial diodes differ significantly in structure, performance, and mounting methods. Modular diodes typically have a smaller size and higher integration density, making them suitable for use in confined spaces. They also offer stable electrical performance and can withstand higher currents and voltages. Axial diodes, on the other hand, have longer leads and are suitable for applications requiring greater heat dissipation space and performance.

[0003] Therefore, in the prior art, due to the layout and space limitations inside the junction box, as well as the performance and installation requirements of the diode itself, it is difficult for the same junction box to simultaneously meet the installation requirements of modular diodes and axial diodes, thus limiting the application flexibility of the junction box.

[0004] Therefore, this application studies a photovoltaic junction box that is compatible with both modular diodes and axial diodes, thereby improving the application flexibility of the photovoltaic junction box. Utility Model Content

[0005] In order to be compatible with both modular diodes and axial diodes and improve the application flexibility of photovoltaic junction boxes, this application provides a photovoltaic junction box.

[0006] This application provides a photovoltaic junction box, which adopts the following technical solution:

[0007] A photovoltaic junction box includes a box body with a mounting cavity. One side of the mounting cavity protrudes outward to form a receiving cavity. A clearance groove is formed through the bottom of the box body, extending along the mounting cavity to the receiving cavity. A module assembly or an axial assembly is disposed within the mounting cavity. The module assembly includes a module metal bracket and a module diode, and the axial assembly includes an axial metal bracket and an axial diode. When the module diode is installed, it is located within the mounting cavity. When the axial diode is installed, a portion of it is located within the receiving cavity and accommodated in the clearance groove.

[0008] By adopting the above technical solution, the accommodating cavity and the relief groove can be used to install the axial diode without interfering with other parts of the box. When the axial diode and the modular diode are installed separately, they can share the mounting cavity, which improves the space utilization. Furthermore, the relief groove can dissipate heat from the axial diode through the box, thus enabling compatibility with both modular diodes and axial diodes and improving the application flexibility of the photovoltaic junction box.

[0009] Optionally, a heat dissipation groove is provided at the bottom of the box body, and the heat dissipation groove is interconnected with the clearance groove.

[0010] By adopting the above technical solution, space is left for the axial diode heat sink, which enables better heat dissipation and also facilitates the flow of sealant during potting.

[0011] Optionally, heat dissipation grooves are provided on both sides of the relief groove.

[0012] Optionally, the sidewalls of the heat dissipation groove are inclined to opposite sides along the receiving cavity to the outside of the box.

[0013] Optionally, the bottom of the box body is provided with glue-filling grooves on both sides of the relief groove, and a support member is formed between the relief groove and the glue-filling groove.

[0014] Optionally, the support member has adhesive flow holes.

[0015] By adopting the above technical solution, the sealant can easily seep down through the flow hole, preventing black leakage at the bottom.

[0016] Optionally, the inner bottom surface of the box is provided with a support column, and both the modular metal bracket and the axial metal bracket are provided with support holes corresponding to the support column. During installation, the support column is inserted into the support hole of the modular metal bracket or the axial metal bracket, and the modular metal bracket or the axial metal bracket abuts against the support member.

[0017] Optionally, each of the module metal brackets and each of the axial metal brackets are provided with at least two support columns, and the support holes are also opened accordingly.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. The cavity and the relief groove work together to install the axial diode without interfering with other parts of the box. The axial diode and the module diode can share the mounting cavity when installed separately, which improves the space utilization. Furthermore, the relief groove can dissipate heat from the axial diode through the box, thus making it compatible with both module diodes and axial diodes and improving the application flexibility of the photovoltaic junction box.

[0020] 2. The heat sink provides space for the axial diode heat sink, which enables better heat dissipation and also facilitates the flow of sealant during potting.

[0021] 3. The sealant can easily seep through the flow hole, preventing black leakage at the bottom. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the photovoltaic junction box according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram illustrating the structure of the photovoltaic junction box in this application during the installation of the module diodes;

[0024] Figure 3 This is a schematic diagram illustrating the axial diode installation in the photovoltaic junction box of this application embodiment;

[0025] Figure 4 This is a structural schematic diagram of the photovoltaic junction box in this application, showing the axial diode installation from another perspective;

[0026] Figure 5 This is a schematic diagram of the structure of the photovoltaic junction box in an embodiment of this application.

[0027] Reference numerals: 1. Box body; 2. Mounting cavity; 3. Receiving cavity; 4. Relief groove; 5. Module metal bracket; 6. Axial metal bracket; 7. Cover body; 8. Module diode; 9. Axial diode; 10. Heat dissipation groove; 11. Potting groove; 12. Support component; 121. Support part; 122. Connecting part; 13. Glue flow hole; 14. Support column; 15. Support hole. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a photovoltaic junction box. (Refer to...) Figure 1 and Figure 2 The photovoltaic junction box includes a box body 1 and a cover 7. The box body 1 has an installation cavity 2, and the cover 7 covers the installation cavity 2 and is snapped together with the box body 1.

[0030] Reference Figure 2 and Figure 3 The mounting cavity 2 protrudes outward to form a receiving cavity 3. A relief groove 4 is provided through the bottom of the box body 1. The relief groove 4 extends along the mounting cavity 2 to the receiving cavity 3, so that the axial diode 9 can be received.

[0031] Continue to refer to Figure 2 The mounting cavity 2 is equipped with a module assembly, which includes a module metal bracket 5 and a module diode 8. The module diode 8 is integrally formed with the two module metal brackets 5. When the module diode 8 is installed, the module diode 8 is located inside the mounting cavity 2.

[0032] Reference Figure 3 and Figure 4The mounting cavity 2 can also be equipped with an axial assembly, which includes an axial metal bracket 6 and an axial diode 9. The axial metal bracket 6 is used to mount the axial diode 9. When the axial diode 9 is installed, part of the axial diode 9 is located in the receiving cavity 3, installed between the two axial metal brackets 6, and accommodated in the relief groove 4. The relief groove 4 and the receiving cavity 3 allow the axial diode 9 to be installed in a way that allows it to be installed in the mounting cavity 2, while sharing the mounting cavity 2 with the module metal bracket 5. This allows the junction box to arbitrarily install either the module diode 8 or the axial diode 9, thereby improving the application flexibility of the photovoltaic junction box.

[0033] Continue to refer to Figure 3 In some embodiments, a heat dissipation groove 10 is provided at the bottom of the housing 1, and the heat dissipation groove 10 is interconnected with the clearance groove 4. This provides space for the heat sink of the axial diode 9, enabling better heat dissipation and facilitating the flow of sealant during potting, thus better accommodating the installation of the axial diode 9.

[0034] In some embodiments, heat dissipation grooves 10 are provided on both sides of the relief groove 4 to better dissipate heat from the axial diode 9.

[0035] In some embodiments, the sidewalls of the heat sink 10 are inclined along the outer side of the receiving cavity 3 towards the outer side of the housing 1. This facilitates the installation of the heat sink and allows for better drainage of the sealant.

[0036] In some embodiments, the bottom of the housing 1 has glue-filling grooves 11 on both sides of the relief groove 4, and a support member 12 is formed between the relief groove 4 and the glue-filling groove 11. The support member 12 is used to support the module metal bracket 5 or the axial metal bracket 6. (Refer to...) Figure 5 In this embodiment, the support member 12 includes two support parts 121 and a connecting part 122. The connecting part 122 is connected between the two support parts 121. The two support parts 121 are used to support two module metal brackets 5 or two axial metal brackets 6 respectively. When the module diode 8 is installed, the module diode 8 is located above the connecting part 122.

[0037] In some embodiments, the support member 12 has a glue flow hole 13. In this embodiment, the glue flow hole 13 is provided in the connecting part 122, and the glue flow hole 13 allows the sealant to seep down easily, preventing black leakage at the bottom.

[0038] Refer again Figure 4In some embodiments, a support column 14 is integrally formed on the inner bottom surface of the housing 1. The support column 14 is located on two opposing sides of the two support parts 121. Both the modular metal bracket 5 and the axial metal bracket 6 have support holes 15 corresponding to the support column 14. The two modular metal brackets 5 or the two axial metal brackets 6 are respectively installed on the support columns 14 on both sides. During installation, the support column 14 is inserted into the support hole 15 of the modular metal bracket 5 or the axial metal bracket 6, and the modular metal bracket 5 or the axial metal bracket 6 abuts against the support member 12. In this embodiment, the modular metal bracket 5 or the axial metal bracket 6 abuts against the support part 121.

[0039] In some embodiments, each modular metal bracket 5 and each axial metal bracket 6 are provided with at least two support columns 14, and in this embodiment, two support columns are provided for each. Support holes 15 are also correspondingly provided. This allows for more stable fixing of the modular metal bracket 5 or the axial metal bracket 6.

[0040] The implementation principle of a photovoltaic junction box according to an embodiment of this application is as follows: the receiving cavity 3 cooperates with the relief groove 4 to install the axial diode 9 without interfering with other parts of the box body 1. When the axial diode 9 and the module diode 8 are installed separately, they can share the mounting cavity 2, which improves the space utilization. Furthermore, the relief groove 4 penetrates the box body 1 to dissipate heat from the axial diode 9, thereby enabling compatibility between the module diode 8 and the axial diode 9 and improving the application flexibility of the photovoltaic junction box.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A photovoltaic junction box, characterized in that: The device includes a housing (1), which has an installation cavity (2). One side of the installation cavity (2) protrudes outward to form a receiving cavity (3). A clearance groove (4) is provided through the bottom of the housing (1). The clearance groove (4) extends along the installation cavity (2) to the receiving cavity (3). A module assembly or an axial assembly is provided in the installation cavity (2). The module assembly includes a module metal bracket (5) and a module diode (8). The axial assembly includes an axial metal bracket (6) and an axial diode (9). When the module diode (8) is installed, it is located in the installation cavity (2). When the axial diode (9) is installed, part of the axial diode (9) is located in the receiving cavity (3) and is accommodated in the clearance groove (4).

2. A photovoltaic junction box according to claim 1, characterized in that: The bottom of the box body (1) is provided with a heat dissipation groove (10), and the heat dissipation groove (10) is connected to the relief groove (4).

3. A photovoltaic junction box according to claim 2, characterized in that: Heat dissipation grooves (10) are provided on both sides of the relief groove (4).

4. A photovoltaic junction box according to claim 3, characterized in that: The sidewall of the heat dissipation groove (10) is inclined along the receiving cavity (3) to the side of the box body (1) that is far away from each other.

5. A photovoltaic junction box according to claim 1, characterized in that: The bottom of the box body (1) is provided with glue-filling grooves (11) on both sides of the relief groove (4), and a support member (12) is formed between the relief groove (4) and the glue-filling groove (11).

6. A photovoltaic junction box according to claim 5, characterized in that: The support member (12) has a glue flow hole (13).

7. A photovoltaic junction box according to claim 5, characterized in that: The inner bottom surface of the box (1) is provided with a support column (14). The module metal bracket (5) and the axial metal bracket (6) are both provided with support holes (15) corresponding to the support column (14). During installation, the support column (14) is inserted into the support hole (15) of the module metal bracket (5) or the axial metal bracket (6), and the module metal bracket (5) or the axial metal bracket (6) abuts against the support member (12).

8. A photovoltaic junction box according to claim 7, characterized in that: Each of the module metal brackets (5) and each of the axial metal brackets (6) is provided with at least two of the support columns (14), and the support holes (15) are also opened accordingly.

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