Junction box for photovoltaic module

Abstract

The utility model discloses a junction box for a photovoltaic module, which comprises a shell, two opposite side walls of the shell are both provided with threading holes, the bottom wall of the shell is provided with a plurality of clamping strips which are arranged in parallel at intervals, and the plurality of clamping strips all extend towards the direction of two side plates provided with the threading holes. A wiring device is embedded between every two adjacent clamping strips, each wiring device comprises a substrate, a first binding post and a second binding post, the first binding posts and the second binding posts are distributed and fixed at the two ends of the substrate in the length direction, and the first binding posts and the second binding posts are electrically connected. The number of the wiring devices is selected according to the number of wires needing to be connected, when the wires are connected, one wire penetrates through the threading hole in one side of the shell to be connected with the first binding post, the other wire penetrates through the threading hole in the other side of the shell to be connected with the second binding post, and therefore the effect of quickly connecting the wires is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a junction box, and more specifically, to a junction box for a photovoltaic component. Background Art

[0002] Junction box refers to a device used to connect wires and cables in electrical equipment. Junction box can provide a safe environment to connect wires and cables to protect the wire connection points from external environment damage, such as moisture, dust, etc., so as to ensure the stability and long-term reliability of the connection points and reduce the failure rate.

[0003] The junction box includes a box cover and a shell with an opening at the top. The box cover and the shell are fixedly connected by bolts. A through hole for the power supply line to pass through is opened on the side of the shell. The ends of two or more wires are inserted into the through holes on different sides and gathered in the shell, and then electrically connected in the shell. The connection method is usually to wrap the two wires together and then wrap them with insulating tape. However, this connection method requires reserving a certain length of wire ends in the shell, pulling the wire ends out of the shell for connection, and then reinserting them into the shell after the connection is made. As a result, more cables are gathered in the shell, which not only causes magnetic interference, but also heats up at the joints, which poses a safety hazard. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the internal wiring of the traditional junction box is relatively inconvenient, and thus a junction box for photovoltaic components is provided to solve the above problem.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A junction box for a photovoltaic module comprises a shell, wherein two opposite side walls of the shell are provided with threading holes, and a plurality of parallel and spaced clamping strips are arranged on the bottom wall of the shell, wherein the plurality of clamping strips extend toward two side plates with the threading holes, and a wiring device is embedded between two adjacent clamping strips, wherein the wiring device comprises a substrate, a first terminal post and a second terminal post, wherein the first terminal post and the second terminal post are distributed and fixed at both ends of the substrate in the length direction, and the first terminal post and the second terminal post are electrically connected.

[0007] Preferably, the wiring device further comprises a fuse, and the first wiring post and the second wiring post are electrically connected via the fuse.

[0008] Preferably, the thickness of the substrate is greater than the depth formed by two adjacent card strips.

[0009] Preferably, a through hole is formed at the top of the terminal post, a threaded hole communicating with the through hole is formed at the upper end surface of the terminal post, and a locking screw is threadedly connected in the threaded hole.

[0010] Preferably, the length of the locking screw is smaller than the depth of the threaded hole, and the depth of the threaded hole is greater than or equal to the inner diameter of the through hole.

[0011] Preferably: a plurality of clamping posts are arranged on the bottom wall of the shell, the plurality of clamping posts are distributed around the area formed by a plurality of clamping strips, the top ends of the plurality of clamping posts are commonly clamped with a shielding plate, and the shielding plate is spaced apart from the top ends of the first terminal and the second terminal.

[0012] The beneficial effects of the utility model are as follows: the number of wiring devices is selected according to the number of wires to be connected, and when connecting the wires, one wire is inserted from the wire threading hole on one side of the shell to be connected to the first terminal, and another wire is inserted from the wire threading hole on the other side of the shell to be connected to the second terminal, thereby realizing the effect of quickly connecting the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the wiring for a photovoltaic module Figure 1 ;

[0014] Figure 2 A schematic diagram of the wiring for a photovoltaic module Figure 2 ;

[0015] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0016] In the figure: 1, shell; 11, threading hole; 2, clamping strip; 3, wiring device; 31, base plate; 32, first terminal; 321, through hole; 322, threaded hole; 3221, locking screw; 33, second terminal; 34, fuse; 4, clamping post; 5, shield. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0019] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0020] according to Figure 1-3 As shown, a junction box for a photovoltaic module includes a housing 1, and two opposite side walls of the housing 1 are provided with threading holes 11. The bottom wall of the housing 1 is provided with a plurality of parallel and spaced clamping strips 2, and the plurality of clamping strips 2 extend toward the two side plates provided with the threading holes 11. A wiring device 3 is embedded between two adjacent clamping strips 2, and the wiring device 3 includes a substrate 31, a first terminal 32, and a second terminal 33. The first terminal 32 and the second terminal 33 are distributed and fixed at both ends of the length direction of the substrate 31, and the first terminal 32 and the second terminal 33 are electrically connected. The number of the wiring devices 3 is selected according to the number of wires to be connected. When connecting the wires, one wire is inserted from the threading hole 11 on one side of the housing 1 to be connected to the first terminal 32, and another wire is inserted from the threading hole 11 on the other side of the housing 1 to be connected to the second terminal 33, thereby realizing the function of quickly connecting the wires.

[0021] according to Figure 2 As shown, four clamping columns 4 are arranged on the bottom wall of the shell 1, and the four clamping columns 4 are distributed around the area formed by a plurality of clamping strips 2. The top ends of the four clamping columns 4 are commonly clamped with a shield plate 5, and the shield plate 5 is spaced apart from the top ends of the first terminal 32 and the second terminal 33.

[0022] according to Figure 1-3 As shown, the wiring device 3 also includes a fuse 34, and the first terminal 32 and the second terminal 33 are electrically connected through the fuse 34. The thickness of the substrate 31 is higher than the depth formed by the two adjacent clamping strips 2. A through hole 321 is provided at the top of the terminal, and a threaded hole 322 communicating with the through hole 321 is provided on the upper end surface of the terminal, and a locking screw 3221 is threadedly connected in the threaded hole 322. The length of the locking screw 3221 is less than the depth of the threaded hole 322, and the depth of the threaded hole 322 is greater than or equal to the inner diameter of the through hole 321.

[0023] Combination Figure 1-3 As shown, the height of the base plate 31 is higher than the height of the card strip 2, so as to prevent the fuse 34 from overheating and burning the card strip 2. The setting of the fuse 34 can effectively prevent the wires from overheating and catching fire. After the lines are connected, the shield plate 5 is connected to the surrounding card columns 4 to shield the wiring device 3, thereby protecting the wiring device 3 and preventing the wiring device 3 from being damaged.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0026] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A junction box for a photovoltaic module, comprising a housing (1), wherein two opposite side walls of the housing (1) are provided with threading holes (11), wherein: A plurality of clamping strips (2) are arranged in parallel and spaced apart on the bottom wall of the shell (1), and the plurality of clamping strips (2) extend towards the two side plates provided with the threading holes (11). A wiring device (3) is embedded between two adjacent clamping strips (2), and the wiring device (3) comprises a base plate (31), a first wiring post (32) and a second wiring post (33). The first wiring post (32) and the second wiring post (33) are distributed and fixed at both ends of the base plate (31) in the length direction, and the first wiring post (32) and the second wiring post (33) are electrically connected.

2. The junction box for a photovoltaic module according to claim 1, characterized in that: The wiring device (3) further comprises a fuse (34), and the first wiring post (32) and the second wiring post (33) are electrically connected via the fuse (34).

3. The junction box for a photovoltaic module according to claim 2, characterized in that: The thickness of the base plate (31) is greater than the depth formed by two adjacent card strips (2).

4. The junction box for a photovoltaic module according to claim 3, characterized in that: A through hole (321) is formed at the top of the terminal post, a threaded hole (322) communicating with the through hole (321) is formed at the upper end surface of the terminal post, and a locking screw (3221) is threadedly connected in the threaded hole (322).

5. The junction box for a photovoltaic module according to claim 4, characterized in that: The length of the locking screw (3221) is smaller than the depth of the threaded hole (322), and the depth of the threaded hole (322) is greater than or equal to the inner diameter of the through hole (321).

6. The junction box for a photovoltaic module according to claim 5, characterized in that: A plurality of clamping columns (4) are arranged on the bottom wall of the housing (1), the plurality of clamping columns (4) are distributed around the area formed by the plurality of clamping strips (2), the top ends of the plurality of clamping columns (4) are commonly clamped with a shielding plate (5), and the shielding plate (5) is spaced apart from the top ends of the first terminal (32) and the second terminal (33).

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