Junction box and photovoltaic module

Abstract

The utility model belongs to the technical field of photovoltaic modules, and discloses a junction box and a photovoltaic module. The junction box comprises a junction box body, a containing groove is formed in the junction box body, and at least two first riveting columns are arranged at the groove bottom of the containing groove in a protruding mode; the at least two conducting strips are arranged in the containing groove, each conducting strip is provided with a first opening, and the first riveting column is arranged in the first opening in a penetrating mode and used for fixing a set bus bar to the conducting strips. According to the utility model, the bus bar, the conducting strip and the junction box body are connected together in a riveting manner, and the electrical connection of the bus bar and the conducting strip is not influenced, so that the assembly process is reduced, and the connection stability of the bus bar, the conducting strip and the junction box body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic components, in particular to a junction box and a photovoltaic component. Background Art

[0002] Currently, the solar junction box on the market generally includes a box body and a number of copper plates housed in the box body. One end of the copper plate is connected to an external cable, and the other end is connected to a busbar to connect the solar panel and the external circuit.

[0003] In the prior art, the copper plate needs to be installed in the box body first, and then the copper plate is connected to the busbar by laser welding or soldering. This not only leads to more assembly steps, but also laser welding or soldering easily causes tiny hot particles of metal to splash onto the inner wall of the box body, making it impossible to ensure good insulation of the box body.

[0004] Therefore, it is urgent to provide a junction box and a photovoltaic module to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a junction box and a photovoltaic module, which connect the bus bar, the conductive sheet and the junction box body together by riveting, without affecting the electrical connection between the bus bar and the conductive sheet, thus not only reducing the assembly process but also ensuring the stability of the connection between the three.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Junction box, including:

[0008] A junction box body, wherein a receiving groove is provided in the junction box body, and at least two first riveting columns are convexly provided at the bottom of the receiving groove;

[0009] At least two conductive sheets are disposed in the receiving groove, each of the conductive sheets is provided with a first opening, and the first rivet is penetrated through the first opening and is used to fix a predetermined bus bar on the conductive sheet.

[0010] As an optional solution of the junction box, at least two threading holes are provided at intervals at the bottom of the accommodating groove, and the threading holes are used for the busbar to be passed through the accommodating groove.

[0011] As an optional solution for the junction box, one end of each of the conductive sheets is provided with a hanging ear portion, the hanging ear portion is provided with a first rivet hole, the bottom of the accommodating groove is protrudingly provided with a second rivet column, the second rivet column is passed through the first rivet hole and riveted.

[0012] As an optional solution of the junction box, an insulating partition is convexly provided on the bottom of the accommodating groove, and the insulating partition is located between the hanging ears of the two conductive sheets.

[0013] As an optional solution for the junction box, a second rivet hole is provided at one end of the conductive sheet away from the hanging ear portion, a third rivet column is protruded from the bottom of the accommodating groove, and the third rivet column is passed through the second rivet hole and riveted.

[0014] As an optional solution for the junction box, a plurality of bosses with the same height are provided at intervals on the bottom of the accommodating groove, and the conductive sheet is stopped on the bosses and divides the accommodating groove into an upper cavity and a lower cavity.

[0015] As an optional solution for the junction box, a limiting plate is protruded circumferentially on the outer wall surface of the first riveted column, and the side of the limiting plate facing the conductive sheet is flush with the upper end surface of the boss, and the conductive sheet is stopped on the limiting plate.

[0016] As an optional solution of the junction box, the junction box body is filled with potting glue.

[0017] As an optional solution of the junction box, each of the conductive sheets is provided with a glue leakage hole, and the upper cavity is connected with the lower cavity through the glue leakage hole.

[0018] A photovoltaic assembly comprises a busbar and a junction box as described above, wherein the busbar is provided with a second opening, the first rivet column is passed through the first opening and the second opening, and one end of the first rivet column can be riveted to fix the busbar on the conductive sheet.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The junction box provided by the utility model installs two conductive sheets into the receiving groove of the junction box body, and two first riveting columns are convexly provided at the bottom of the receiving groove, each conductive sheet is provided with a first opening, and the bus bar is provided with a second opening. The first riveting column is passed through the first opening and the second opening and then riveted, and the bus bar can be fixed on the conductive sheet after one end of the first riveting column is hot-melted and cooled. The bus bar, the conductive sheet and the junction box body can be connected together by riveting, so as to meet the electrical connection between the bus bar and the conductive sheet, which not only reduces the assembly process, but also ensures the stability of the connection between the three.

[0021] The photovoltaic assembly provided by the utility model connects the bus bar, the conductive sheet and the junction box body together by riveting, so as to meet the electrical connection between the bus bar and the conductive sheet, which not only reduces the assembly process but also ensures the stability of the connection between the three. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the assembly of the junction box in the embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of two conductive sheets in an embodiment of the utility model;

[0024] Figure 3 It is a top view of the junction box body in the embodiment of the utility model;

[0025] Figure 4 This is a top view of the two conductive sheets placed in the junction box body in the embodiment of the utility model.

[0026] Figure 5 It is a schematic diagram of the structure of the bus bar in the embodiment of the utility model.

[0027] In the figure:

[0028] 1. Junction box body; 2. Conductive sheet; 3. Bus bar; 31. Second opening;

[0029] 11. accommodating groove; 12. first riveting column; 13. threading hole; 14. second riveting column; 15. insulating partition; 16. third riveting column; 17. boss; 18. limiting plate;

[0030] 21. First opening hole; 22. Ear hook; 23. First rivet hole; 24. Second rivet hole; 25. Glue leakage hole. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] In order not to affect the electrical connection between the bus bar and the conductive sheet, not only to reduce the assembly process, but also to ensure the connection stability of the junction box, the bus bar and the conductive sheet, this embodiment provides a junction box and a photovoltaic module, the following combination Figures 1 to 5 The specific contents of this embodiment are described in detail.

[0036] The junction box in this embodiment includes a junction box body 1 and at least two conductive sheets 2. A receiving groove 11 is provided in the junction box body 1, and at least two first riveted columns 12 are convexly provided at the bottom of the receiving groove 11. At least two conductive sheets 2 are provided in the receiving groove 11, and each conductive sheet 2 is respectively provided with a first opening 21, one end of the first riveted column 12 is passed through the first opening 21 and can pass through the second opening 31 of the bus bar 3, and one end of the first riveted column 12 can be riveted to fix the bus bar 3 on the conductive sheet 2. Optionally, the conductive sheet 2 is made of metal copper, and the junction box body 1 is made of plastic.

[0037] In short, the junction box provided in this embodiment installs two conductive sheets 2 into the receiving groove 11 of the junction box body 1, and two first riveting columns 12 are convexly provided at the bottom of the receiving groove 11. A first opening 21 is provided on each conductive sheet 2, and a second opening 31 is provided on the bus bar 3. The first riveting columns 12 are passed through the first opening 21 and the second opening 31 and then riveted. After one end of the first riveting column 12 is hot-melted and cooled, the bus bar 3 can be fixed on the conductive sheet 2. The bus bar 3, the conductive sheet 2 and the junction box body 1 are connected together by riveting, so as to meet the electrical connection between the bus bar 3 and the conductive sheet 2, which not only reduces the assembly process, but also ensures the stability of the connection between the three.

[0038] Preferably, when the junction box is installed, one end of the second opening 31 on the busbar 3 passes through the junction box body 1 and is bent and sleeved on the first rivet column 12, the busbar 3 is in contact with the conductive sheet 2, and the first rivet column 12 fixes the busbar 3 and the conductive sheet 2 through a hot riveting process. The hot riveting shape of the head of the first rivet column 12 is larger than the diameter of the first opening 21, so as to achieve better fixation.

[0039] Furthermore, if Figure 1 and Figure 3 As shown, at least two threading holes 13 are spaced apart at the bottom of the receiving groove 11, and the threading holes 13 are used for the bus bar 3 to pass through the threading holes 13 and pass through the receiving groove 11. The number of the threading holes 13 is the same as the number of the conductive sheets 2, so that the bus bar 3 led out of the solar panel can pass through the threading holes 13 and then be bent to make electrical contact with the conductive sheet 2.

[0040] Furthermore, if Figures 2 to 4 As shown, one end of each conductive sheet 2 is provided with a hook portion 22, and the hook portion 22 is provided with a first rivet hole 23. The bottom of the accommodating groove 11 is provided with a second rivet column 14, and the second rivet column 14 is inserted into and riveted to the first rivet hole 23. By adding the second rivet column 14 and the first rivet hole 23, the conductive sheet 2 is connected to the junction box body 1 by hot-melt riveting.

[0041] Furthermore, an insulating partition 15 is convexly provided at the bottom of the receiving groove 11, and the insulating partition 15 is located between the ear portions 22 of the two conductive sheets 2. Since current will flow through the conductive sheet 2 after being connected to the busbar 3, the insulating partition 15 can be added to avoid contact short circuit between two adjacent conductive sheets 2.

[0042] Furthermore, a second rivet hole 24 is formed at one end of the conductive sheet 2 away from the ear portion 22, and a third rivet column 16 is convexly formed at the bottom of the accommodating groove 11. The third rivet column 16 is passed through and riveted to the second rivet hole 24. By adding the third rivet column 16 and the second rivet hole 24, the conductive sheet 2 and the junction box body 1 are connected together by hot-melt riveting, further ensuring the stability of the connection between the two, and preventing the conductive sheet 2 from being separated from the junction box body 1 during use.

[0043] Furthermore, a plurality of bosses 17 of the same height are provided at intervals on the bottom of the receiving groove 11, and the conductive sheet 2 is stopped on the bosses 17 and divides the receiving groove 11 into an upper cavity and a lower cavity. Placing the conductive sheet 2 on the plurality of bosses 17 facilitates raising the position of the conductive sheet 2. After the junction box is installed on the solar panel, the influence of the temperature of the solar panel on the conductive sheet 2 is reduced.

[0044] Furthermore, a stop plate 18 is protruded from the outer wall surface of the first riveted column 12 along the circumferential direction, and the side of the stop plate 18 facing the conductive sheet 2 is flush with the upper end surface of the boss 17, and the conductive sheet 2 is stopped on the stop plate 18. The area of ​​the stop plate 18 is larger than the first opening 21 of the conductive sheet 2, so that the stop plate 18 can support the conductive sheet 2 at the bottom.

[0045] Furthermore, the junction box body 1 is filled with potting glue, and the potting glue needs to fill the containing groove 11. Furthermore, each conductive sheet 2 is provided with a glue leakage hole 25, and the upper cavity is connected with the lower cavity through the glue leakage hole 25. By adding the glue leakage hole 25, the potting glue can quickly flow through the upper cavity into the lower cavity, ensuring that the glue liquid fills the upper cavity and the lower cavity.

[0046] This embodiment also provides a photovoltaic assembly, which includes a busbar 3 and the junction box mentioned above, the busbar 3 is provided with a second opening 31, the first rivet column 12 is penetrated through the first opening 21 and the second opening 31, and one end of the first rivet column 12 can be riveted to fix the busbar 3 on the conductive sheet 2. The busbar 3, the conductive sheet 2 and the junction box body 1 can be connected together by riveting, so as to meet the electrical connection between the busbar 3 and the conductive sheet 2, which not only reduces the assembly process, but also ensures the stability of the connection between the three.

[0047] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A junction box, characterized in that: include: A junction box body (1), wherein a receiving groove (11) is provided in the junction box body (1), and at least two first riveting columns (12) are protrudingly provided at the bottom of the receiving groove (11); At least two conductive sheets (2) are arranged in the receiving groove (11), each conductive sheet (2) is provided with a first opening (21), and the first riveted column (12) is passed through the first opening (21) and is used to fix a predetermined bus bar (3) on the conductive sheet (2).

2. The junction box according to claim 1, characterized in that: At least two threading holes (13) are arranged at intervals at the bottom of the accommodating groove (11), and the threading holes (13) are used for the busbar (3) to be passed through the accommodating groove (11).

3. The junction box according to claim 1, characterized in that: One end of each conductive sheet (2) is provided with a hook portion (22), the hook portion (22) is provided with a first rivet hole (23), the bottom of the accommodating groove (11) is provided with a second rivet column (14), the second rivet column (14) is passed through the first rivet hole (23) and riveted.

4. The junction box according to claim 3, characterized in that: An insulating partition (15) is convexly provided at the bottom of the accommodating groove (11), and the insulating partition (15) is located between the hanging ear portions (22) of the two conductive sheets (2).

5. The junction box according to claim 3, characterized in that: A second rivet hole (24) is provided at one end of the conductive sheet (2) away from the hook portion (22), a third rivet column (16) is protruding from the bottom of the accommodating groove (11), and the third rivet column (16) is inserted into the second rivet hole (24) and riveted.

6. The junction box according to claim 1, characterized in that: The bottom of the accommodating groove (11) is provided with a plurality of bosses (17) of the same height at intervals, and the conductive sheet (2) is stopped on the bosses (17) and divides the accommodating groove (11) into an upper cavity and a lower cavity.

7. The junction box according to claim 6, characterized in that: A limiting plate (18) is protruded along the circumferential direction on the outer wall surface of the first riveted column (12); the limiting plate (18) is flush with the upper end surface of the boss (17) on the side facing the conductive sheet (2); and the conductive sheet (2) is stopped on the limiting plate (18).

8. The junction box according to claim 6, characterized in that: The junction box body (1) is filled with potting glue.

9. The junction box according to claim 8, characterized in that: A glue leakage hole (25) is provided on each of the conductive sheets (2), and the upper cavity is connected to the lower cavity through the glue leakage hole (25).

10. A photovoltaic module, characterized in that The invention comprises a busbar (3) and a junction box as claimed in any one of claims 1 to 9, wherein the busbar (3) is provided with a second opening (31), the first riveted column (12) is passed through the first opening (21) and the second opening (31), and one end of the first riveted column (12) can be riveted to fix the busbar (3) on the conductive sheet (2).

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