Outgoing line junction box of photovoltaic inverter

Abstract

The utility model discloses a photovoltaic inverter outgoing line junction box, which comprises a box body, the box body is arranged at the bottom of an inverter and covers a wiring terminal, the box body comprises a bottom plate, an inner plate connected with the bottom plate and a cover shell connected with the inner plate, the cover shell, the bottom plate and the inner plate enclose to form a storage space, and the bottom plate is arranged in the storage space. The cover shell is provided with an installation opening, the installation opening is used for installing a transparent plate, and the transparent plate is installed in the installation opening through an adhesive tape. According to the utility model, the transparent plate is arranged on the box body, so that the internal wiring condition can be visually seen from the outside.

Description

Technical Field

[0001] The utility model relates to a photovoltaic inverter outlet junction box, belonging to the technical field of junction boxes. Background Art

[0002] After the photovoltaic inverter is installed, its control buttons and wiring terminals are exposed. Since the wiring terminals on the inverter output side are in a high temperature and high humidity environment for a long time, or are exposed to direct sunlight and rain erosion, they are very easy to be damaged. There is also a risk of electric shock to non-professionals.

[0003] In the related art, a junction box is provided to cover the wiring terminals. Although this protects the wiring terminals, the wiring conditions inside the junction box cannot be quickly observed. Utility Model Content

[0004] The purpose of the utility model is to provide a photovoltaic inverter outlet junction box, which is convenient for visually viewing the internal wiring situation from the outside.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A photovoltaic inverter output terminal box includes a box body, which is installed at the bottom of the inverter and covers the terminal blocks. The box body includes a bottom plate, an inner plate connected to the bottom plate, and a cover connected to the inner plate. The cover, the bottom plate, and the inner plate form a storage space. The cover is provided with a mounting opening for mounting a transparent plate. The transparent plate is mounted to the mounting opening via a rubber strip.

[0007] As a further improved technical solution of the present invention, the transparent plate is a tempered glass or a transparent plastic plate.

[0008] As a further improved technical solution of the present invention, the cover shell includes an outer panel, a first side panel connected to one side of the outer panel, and a second side panel connected to the other side of the outer panel. The outer panel is arranged opposite to the inner panel, and the mounting port is arranged on the outer panel.

[0009] As a further improved technical solution of the present invention, the rubber strip includes a main body, which is provided with a first card slot and a second card slot. The first card slot is used to install the transparent plate, and the rubber strip is connected to the outer plate at the installation port through the second card slot.

[0010] As a further improved technical solution of the present invention, the rubber strip further includes a reinforcing rib, the main body is provided with a mounting groove, and the reinforcing rib is installed in the mounting groove.

[0011] As a further improved technical solution of the present invention, the inner plate is provided with multiple rows of heat dissipation holes, and the multiple rows of heat dissipation holes are arranged in alignment, or the multiple rows of heat dissipation holes are arranged in staggered positions.

[0012] As a further improved technical solution of the present invention, the junction box also includes a locking device, which includes a locking part and a hook part. The first side panel and the inner panel are rotatably connected through a hinge, the locking part is installed on the second side panel, and the hook part is installed on the inner panel.

[0013] As a further improved technical solution of the present invention, along the height direction of the box body, the top end of the inner plate is lower than the top end of the cover shell, the top end of the cover shell is provided with a connecting ear, and the connecting ear is provided with a through hole.

[0014] As a further improved technical solution of the present invention, the bottom plate is provided with a wire outlet hole, the first side plate is fixed with a first hook, the second side plate is fixed with a second hook, the junction box also includes a bundling piece and a hook fixed to one end of the bundling piece, the other end of the bundling piece is fixed to the first hook, the hook can be hooked on the second hook, and the bundling piece is used to bundle cables.

[0015] As a further improved technical solution of the present invention, the binding piece is an elastic belt structure.

[0016] Compared with the prior art, the beneficial effect of the present invention is that by arranging a mounting opening on the box body and installing a transparent plate on the mounting opening, the internal wiring situation can be easily viewed from the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the photovoltaic inverter outlet junction box of the utility model;

[0018] Figure 2 yes Figure 1 A magnified schematic diagram of area A in the middle;

[0019] Figure 3 yes Figure 1 The main view of the photovoltaic inverter outlet junction box is shown;

[0020] Figure 4 It is along Figure 3 Cross-sectional view along the midline BB;

[0021] Figure 5 yes Figure 4 An enlarged schematic diagram of the middle rubber strip;

[0022] Figure 6 yes Figure 5 Enlarged schematic diagram of area C in the middle;

[0023] Figure 7 yes Figure 1 The left side view of the photovoltaic inverter outgoing wiring box is shown;

[0024] Figure 8 It is a schematic diagram of other embodiments of the inner panel of the present invention. DETAILED DESCRIPTION

[0025] The following exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. If there are several specific embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of devices, products and / or methods that are consistent with some aspects of the present invention and are described in the claims of the present invention.

[0026] The terms used in this utility model are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of this utility model. The singular forms "a", "the" or "the" used in the specification and claims of this utility model are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0027] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, "one" or "an" and similar words do not indicate a quantity limitation, but rather indicate the existence of at least one. Unless otherwise specified, the words "front", "back", "upper", "lower" and similar words that appear in the present invention are only for the convenience of description and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprises" are open-ended expressions, meaning that the elements appearing before "include" or "comprises" include the elements appearing after "include" or "comprises" and their equivalents, which does not exclude that the elements appearing before "include" or "comprises" may also include other elements. If "several" appears in the present invention, it means two or more.

[0028] Please refer to Figures 1 to 8 As shown, the utility model discloses a photovoltaic inverter outlet junction box, including a box body 1, a locking device 2 and a bundling structure 3. The box body 1 is installed at the bottom of the inverter and covers the wiring terminals; the locking device 2 is installed on the box body 1 and is used to open the box body 1 for easy maintenance; the bundling structure 3 is arranged inside the box body 1 to facilitate bundling and merging multiple bundles of cables.

[0029] The box body 1 is at least partially made of aluminum alloy. Due to the high strength of aluminum alloy, the box body 1 is not only light but also durable and can effectively resist erosion in harsh outdoor environments.

[0030] See also Figure 1 and Figure 4 The box 1 includes a bottom plate 11, an inner plate 12 perpendicularly connected to the bottom plate 11, and a cover 13 connected to the inner plate 12. The cover 13, bottom plate 11, and inner plate 12 form an upper open storage space 10. The open structure facilitates the installation of some cables within the box 1. The bottom plate 11 is provided with a cable outlet 110 for leading the inverter cables out of the junction box.

[0031] See also Figure 1 The cover shell 13 includes an outer plate 131, a first side plate 132 connected to one side of the outer plate 131, and a second side plate 133 connected to the other side of the outer plate 131. The outer plate 131 is arranged opposite to the inner plate 12, and the first side plate 132 and the second side plate 133 are arranged opposite to each other. The first side plate 132 and the second side plate 133 are both vertically connected to the outer plate 131, and the inner plate 12 is vertically connected to the bottom plate 11. The bottom plate 11, the inner plate 12, the outer plate 131, the first side plate 132 and the second side plate 133 together form a rectangular structure with an open upper end.

[0032] See also Figure 1 Along the height direction H of the box body 1, the top of the inner plate 12 is lower than the top of the cover 13. There is a height difference between the inner plate 12 and the cover 13. On the one hand, it is convenient to cooperate with the wiring terminals, cables, etc. at the end of the inverter. On the other hand, the inner plate 12 reduces a part of the height, reduces the wrapping of the wiring terminals, cables, etc., and helps heat dissipation.

[0033] See also Figure 3 The outer plate 131 is provided with an installation opening 130 for installing a transparent plate 134. The transparent plate 134 is installed in the installation opening 130 by means of a rubber strip 14. This arrangement facilitates visually viewing the internal wiring from the outside through the transparent plate 134. Optionally, the transparent plate 134 is a tempered glass or a transparent plastic plate.

[0034] See also Figure 1 The top of the housing 13 is provided with a connecting lug 135 having a through-hole 1351. The junction box is fixedly connected to the inverter via the connecting lug 135. In some embodiments, the first side panel 132 and the outer panel 131 each have at least one connecting lug 135. In other possible embodiments, the first side panel 132, the outer panel 131, and the second side panel 133 each have at least one connecting lug 135.

[0035] See also Figure 1The top of the cover 13 is vertically connected with an extension plate 136, and the connecting ear 135 extends inward from the extension plate 136. By providing the extension plate 136, the assembly area of ​​the box 1 and the inverter can be increased and the connection stability can be improved.

[0036] See also Figure 5 The rubber strip 14 includes a main body 141 and a reinforcing rib 142. The main body 141 has a mounting groove 1410, and the reinforcing rib 142 is installed in the mounting groove 1410. The reinforcing rib 142 improves the structural strength of the rubber strip 14. The main body 141 has a first slot 1411 and a second slot 1412. The first slot 1411 is used to install the transparent plate 134. The rubber strip 14 is connected to the outer plate 131 at the mounting opening 130 through the second slot 1412.

[0037] See also Figure 6 In order to increase the stability of the combination of the transparent plate 134 and the outer plate 131 with the rubber strip 14, the inner walls of the first slot 1411 and the second slot 1412 are provided with a plurality of protrusions 1413 to increase the friction between the transparent plate 134 and the outer plate 131 and the rubber strip 14.

[0038] The inner plate 12 is provided with a plurality of rows of heat dissipation holes 121. The heat dissipation holes 121 are oval or circular and are used to dissipate heat to the external environment. Figure 1 , the plurality of heat dissipation holes 121 in each row are arranged at equal intervals, and the plurality of rows of heat dissipation holes 121 are aligned. In other possible embodiments, see Figure 8 The multiple heat dissipation holes 121 in each row are arranged at equal intervals, the multiple rows of heat dissipation holes 121 are staggered, the heat dissipation holes 121 are tilted, and the tilt angles of the heat dissipation holes 121 in two adjacent rows are inconsistent, which is conducive to the layout of more heat dissipation holes 121 in the same area.

[0039] See also Figure 2 and Figure 7 The locking device 2 includes a locking portion 21 and a hook portion 22. The first side panel 132 is rotatably connected to the inner panel 12 through a hinge 15. The locking portion 21 is installed on the second side panel 133, and the hook portion 22 is installed on the inner panel 12. The connection between the cover shell 13 and the inner panel 12 is achieved by buckling the locking portion 21 and the hook portion 22. The cover shell 13 can be opened relative to the inner panel 12 by separating the locking portion 21 and the hook portion 22 for easy maintenance.

[0040] In this embodiment, see Figure 4The bundling structure 3 includes a bundling member 31 and a hook 32 fixed to one end of the bundling member 31. A first hook 1321 is fixed to the first side panel 132, and a second hook 1331 is fixed to the second side panel 133. The end of the bundling member 31 away from the hook 32 is fixed to the first hook 1321, and the hook 32 can be hooked on the second hook 1331. The bundling member 31 is used to bundle cables and is an elastic band-like structure. During use, the bundling member 31 is wrapped around multiple cables at least once, and after being unwound from the cables, the hook 32 is hooked on the second hook 1331.

[0041] In other possible embodiments, two binding members 31 may be provided, with one end of one binding member 31 away from the hook 32 being fixed to the first hook 1321 , and the other end of the other binding member 31 away from the hook 32 being fixed to the second hook 1331 .

[0042] Specifically, along the height direction H of the box body 1 , the height of the first hook 1321 is consistent with the height of the second hook 1331 .

[0043] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic inverter outlet junction box, characterized in that: The invention comprises a box (1), wherein the box (1) is installed at the bottom of the inverter and covers the wiring terminals. The box (1) comprises a bottom plate (11), an inner plate (12) connected to the bottom plate (11), and a cover (13) connected to the inner plate (12). The cover (13), the bottom plate (11), and the inner plate (12) enclose a storage space (10). The cover (13) is provided with a mounting opening (130). The mounting opening (130) is used for mounting a transparent plate (134). The transparent plate (134) is mounted on the mounting opening (130) via a rubber strip (14).

2. The photovoltaic inverter outlet junction box according to claim 1, characterized in that: The transparent plate (134) is a tempered glass or a transparent plastic plate.

3. The photovoltaic inverter outlet junction box according to claim 1, characterized in that: The cover shell (13) includes an outer plate (131), a first side plate (132) connected to one side of the outer plate (131), and a second side plate (133) connected to the other side of the outer plate (131). The outer plate (131) is arranged opposite to the inner plate (12), and the mounting port (130) is provided on the outer plate (131).

4. The photovoltaic inverter outlet junction box according to claim 3, characterized in that: The adhesive strip (14) comprises a main body (141), the main body (141) being provided with a first card slot (1411) and a second card slot (1412), the first card slot (1411) being used for mounting the transparent plate (134), and the adhesive strip (14) being connected to the outer plate (131) at the mounting opening (130) via the second card slot (1412).

5. The photovoltaic inverter outlet junction box according to claim 4, characterized in that: The rubber strip (14) further includes a reinforcing rib (142), the main body (141) is provided with a mounting groove (1410), and the reinforcing rib (142) is mounted in the mounting groove (1410).

6. The photovoltaic inverter outlet junction box according to claim 3, characterized in that: The inner plate (12) is provided with multiple rows of heat dissipation holes (121), and the multiple rows of heat dissipation holes (121) are arranged in alignment, or the multiple rows of heat dissipation holes (121) are arranged in a staggered manner.

7. The photovoltaic inverter outlet junction box according to claim 3, characterized in that: The junction box further comprises a locking device (2), the locking device (2) comprising a locking portion (21) and a hook portion (22), the first side panel (132) and the inner panel (12) being rotatably connected via a hinge (15), the locking portion (21) being mounted on the second side panel (133), and the hook portion (22) being mounted on the inner panel (12).

8. The photovoltaic inverter outlet junction box according to claim 7, characterized in that: Along the height direction (H) of the box body (1), the top end of the inner plate (12) is lower than the top end of the cover shell (13), the top end of the cover shell (13) is provided with a connecting ear (135), and the connecting ear (135) is provided with a through hole (1351).

9. The photovoltaic inverter outlet junction box according to claim 3, characterized in that: The bottom plate (11) is provided with a wire outlet hole (110), the first side plate (132) is fixed with a first hook (1321), the second side plate (133) is fixed with a second hook (1331), the junction box further comprises a bundling piece (31) and a hook (32) fixed to one end of the bundling piece (31), the end of the bundling piece (31) away from the hook (32) is fixed to the first hook (1321), the hook (32) can be hooked to the second hook (1331), and the bundling piece (31) is used for bundling cables.

10. The photovoltaic inverter outlet junction box according to claim 9, characterized in that: The binding piece (31) is an elastic belt-shaped structure.

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