Wiring device

Abstract

The utility model relates to the technical field of auxiliary parts of a photovoltaic system, in particular to a wiring device, which comprises a photovoltaic support and a fixing mechanism detachably arranged on the photovoltaic support. The fixing mechanism comprises a sheath arranged on one side of the photovoltaic support, the sheath is sleeved with a clamping ring, the photovoltaic support is sleeved with the side, away from the sheath, of the clamping ring, and the sheath is provided with an installation cavity penetrating through the two ends of the sheath. An overlong cable is stored in the take-up barrel after installation, the problem that the cable is scattered after installation is solved, meanwhile, the take-up barrel is protected outside the cable, erosion of wind and sand to the cable is reduced, particularly, a connector which is easy to break is protected, the possibility of breaking is reduced, an anti-reverse diode is also stored in the sheath, and the anti-reverse diode is prevented from being damaged. And the working stability and the service life of the anti-reverse diode can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary components technology for photovoltaic systems, and in particular to a wiring device. Background Technology

[0002] During the operation of the photovoltaic power station, DC distribution cabinet burnout incidents occurred one after another. Preliminary analysis indicated that the burnout was caused by the explosion of the anti-reverse diode inside the DC distribution cabinet. The DC arc failed to extinguish, and the positive plate discharged to the cabinet. The arc caused overheating and fire in other parts, ultimately burning out the electrical components inside the cabinet. Inspection revealed that due to the high internal resistance of the photovoltaic panels, the short-circuit current of a single panel was only 8.99A. The short-circuit current inside the distribution cabinet did not reach the tripping current of the DC circuit breakers in the combiner box and the distribution cabinet, and the fault current was not cleared in time, resulting in severe equipment damage. Considering economic efficiency and ease of installation, three solutions to the above problems are proposed: First, anti-reverse diodes... Moving the diode to the combiner box requires redesigning the position of the anti-reverse diode inside the combiner box, which is costly and requires replacing many parts. Secondly, replacing the existing anti-reverse diode in the DC distribution cabinet with a new model may lead to burn-out issues later. Thirdly, an external anti-reverse diode can be installed in each photovoltaic branch, specifically at the positive terminal of the sub-array outlet. This eliminates the need to redesign the combiner box dimensions, resulting in lower costs and simpler installation. The input cable of the anti-reverse diode in the DC distribution cabinet is reconnected to the original anti-reverse diode's outlet copper busbar, and the original diode is not removed but used as an insulating base.

[0003] Using external anti-reverse diodes can effectively solve the problem of DC distribution cabinet burnout in photovoltaic power stations. However, in actual installation and use, due to the long installation cables and the messy cables after installation, the anti-reverse diodes are directly exposed and have a short lifespan. Especially when used in environments with strong winds and sandstorms, such as deserts, the connectors are prone to breakage and the anti-reverse diodes are easily damaged. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the technical problems of external mounting of anti-reverse diodes in the above-mentioned prior art, this utility model is proposed.

[0006] The purpose of this invention is to provide a wiring device.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a wiring device, including a photovoltaic bracket and a fixing mechanism detachably mounted on the photovoltaic bracket; the fixing mechanism includes a sheath disposed on one side of the photovoltaic bracket, a retaining ring sleeved on the outer side of the sheath, the side of the retaining ring away from the sheath being sleeved on the photovoltaic bracket, and an installation cavity penetrating both ends of the sheath being provided on the sheath.

[0008] As a preferred embodiment of the wiring device of this utility model, the fixing mechanism further includes a first annular groove coaxially disposed outside the sheath, and the retaining ring is sleeved in the first annular groove.

[0009] As a preferred embodiment of the wiring device of this utility model, the fixing mechanism further includes a storage component detachably disposed on one side of the sheath. The storage component includes a base detachably disposed on one side of the sheath. A take-up drum is detachably disposed on the side of the base away from the sheath. A wire-passing hole is provided on the base and extends into the inside of the take-up drum.

[0010] In a preferred embodiment of the wiring device of this utility model, the storage component further includes a first elastic band with both ends fixed on the base, and the sheath is inserted inside the first elastic band.

[0011] As a preferred embodiment of the wiring device of this utility model, the storage component further includes a second elastic band that is fixed at both ends to the base, and a second annular groove is coaxially provided on the outside of the take-up drum, and the second elastic band is sleeved in the second annular groove.

[0012] In a preferred embodiment of the wiring device of this utility model, the storage component further includes a first limiting groove disposed on the base, and the sheath portion extends into the first limiting groove.

[0013] In a preferred embodiment of the wiring device of this utility model, the storage component further includes a second limiting groove disposed on the base, and the take-up drum portion extends into the second limiting groove.

[0014] As a preferred embodiment of the wiring device of this utility model, the storage component further includes a cover disposed at the end of the take-up drum, the cover having a wire-passing hole at its center, and the cover having an opening extending from the side wall of the cover to the wire-passing hole.

[0015] In a preferred embodiment of the wiring device of this utility model, the cover and the take-up tube are connected by a threaded or magnetic adsorption detachable connection.

[0016] In a preferred embodiment of the wiring device of this utility model, the retaining ring is a stainless steel clamp or a stainless steel cable tie.

[0017] The beneficial effects of this wiring device are as follows: after installation, excessively long cables are stored in the cable reel, solving the problem of tangled cables after installation. At the same time, the cable reel protects the outside of the cable, reducing the corrosion of the cable by wind and sand, especially protecting easily disconnected connectors and reducing the possibility of disconnection. The anti-reverse diode is also stored in the sheath, which helps to ensure the working stability and lifespan of the anti-reverse diode. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the fixing mechanism in this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the sheath in this utility model.

[0022] Figure 4 This is a schematic diagram of the base structure in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the take-up drum in this utility model.

[0024] Figure 6 This is a schematic diagram of the layout structure of the threading holes in this utility model. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0028] Example 1, referring to Figure 1-3 This is the first embodiment of the present utility model. This embodiment provides a wiring device, including a photovoltaic bracket 100 and a fixing mechanism 200 detachably mounted on the photovoltaic bracket 100.

[0029] The fixing mechanism 200 includes a sheath 201 disposed on one side of the photovoltaic bracket 100, a retaining ring 202 sleeved on the outer side of the sheath 201, the side of the retaining ring 202 away from the sheath 201 being sleeved on the photovoltaic bracket 100, and an installation cavity 203 penetrating both ends of the sheath 201.

[0030] When installing the anti-reverse diode externally, the anti-reverse diode is installed inside the mounting cavity 203 of the protective sleeve 201. The protective sleeve 201 protects the anti-reverse diode and reduces damage to the anti-reverse diode caused by wind and sand. The anti-reverse diode and the protective sleeve 201 are detachably installed on the photovoltaic bracket 100 by means of the retaining ring 202, which makes disassembly and assembly convenient.

[0031] Furthermore, the fixing mechanism 200 also includes a first annular groove 204 coaxially disposed outside the sheath 201, and a retaining ring 202 sleeved in the first annular groove 204.

[0032] The retaining ring 202 is specifically fitted into the first annular groove 204 on the outside of the sheath 201. The first annular groove 204 limits the retaining ring 202 and prevents it from falling off.

[0033] Example 2, refer to Figure 1-6 This is the second embodiment of the present invention. Unlike the previous embodiment, the fixing mechanism 200 also includes a storage component 205 that is detachably disposed on one side of the sheath 201. The storage component 205 includes a base 205a that is detachably disposed on one side of the sheath 201. A take-up tube 205b is detachably disposed on the side of the base 205a away from the sheath 201. A wire hole 205c is provided on the base 205a and extends through the wire hole 205c into the inside of the take-up tube 205b.

[0034] The storage component 205 is used to store the connecting cable after the anti-reverse diode is installed. Specifically, the input cable of the anti-reverse diode passes through the wire hole 205c on the base 205a and extends into the cable reel 205b. Of course, in order for the cable to pass through, the wire hole 205c is larger than the connector of the anti-reverse diode. The output cable of the photovoltaic system extends into the cable reel 205b and connects with the input cable of the anti-reverse diode. After connection, any excessively long cables can be stored in the cable reel 205b to form a hidden wiring. The output cable of the anti-reverse diode is also stored in the cable reel 205b after connection.

[0035] Furthermore, the storage component 205 also includes a first elastic band 205d that is fixed at both ends to the base 205a, and the sheath 201 is inserted inside the first elastic band 205d.

[0036] The sheath 201 is fastened to one side of the base 205a by the first elastic band 205d, making it very convenient to install and remove.

[0037] Furthermore, the storage component 205 also includes a second elastic band 205e that is fixed at two points on the base 205a, and a second annular groove 205f is coaxially provided on the outside of the take-up drum 205b, and the second elastic band 205e is sleeved in the second annular groove 205f.

[0038] Similarly, the take-up drum 205b is fastened to the other side of the base 205a by the second annular groove 205f, and the second annular groove 205f limits the second elastic band 205e to prevent the take-up drum 205b from falling out of the second elastic band 205e.

[0039] Furthermore, the storage component 205 also includes a first limiting groove 205g disposed on the base 205a, and the sheath 201 extends into the first limiting groove 205g.

[0040] Furthermore, the storage component 205 also includes a second limiting groove 205h disposed on the base 205a, and the take-up drum 205b extends into the second limiting groove 205h.

[0041] The first limiting groove 205g and the second limiting groove 205h are both arc-shaped grooves arranged along the length of the base 205a, respectively adapting to the external shape of the sheath 201 and the take-up drum 205b, thereby improving the installation stability of the sheath 201 and the take-up drum 205b.

[0042] Example 3, referring to Figure 1-6 This is the third embodiment of the present invention. Unlike the previous embodiment, the storage component 205 also includes a cover 205i disposed at the end of the take-up tube 205b. The cover 205i has a wire hole 205j at its center and an opening 205k extending from the side wall of the cover 205i to the wire hole 205j.

[0043] Furthermore, the cap 205i and the take-up reel 205b are connected by a threaded or magnetic adsorption detachable connection.

[0044] Furthermore, the 202 clamp is made of stainless steel or stainless steel cable tie.

[0045] The cap 205i seals both ends of the take-up drum 205b to prevent the cable from slipping out. The cable passage hole 205j is used to allow the cable to enter the take-up drum 205b. When the connector of the anti-reverse diode and the photovoltaic system subarray outlet is larger than the cable passage hole 205j and cannot pass through, the cable is pressed into the cable passage hole 205j from the opening 205k on the side wall.

[0046] Excessive cable length after installation is stored in the cable reel 205b, solving the problem of tangled cables after installation. At the same time, the cable reel 205b protects the cable from wind and sand corrosion, especially protecting easily disconnected connectors and reducing the possibility of breakage. The anti-reverse diode is also stored in the sheath 201, which helps to ensure the stability and lifespan of the anti-reverse diode.

[0047] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0049] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wiring device, characterized in that: Includes a photovoltaic bracket (100) and a fixing mechanism (200) that is detachably mounted on the photovoltaic bracket (100); The fixing mechanism (200) includes a sheath (201) disposed on one side of the photovoltaic bracket (100), a retaining ring (202) is sleeved on the outside of the sheath (201), the side of the retaining ring (202) away from the sheath (201) is sleeved on the photovoltaic bracket (100), and the sheath (201) is provided with a mounting cavity (203) penetrating both ends of the sheath (201).

2. The wiring device as described in claim 1, characterized in that: The fixing mechanism (200) further includes a first annular groove (204) coaxially disposed outside the sheath (201), and the retaining ring (202) is sleeved in the first annular groove (204).

3. The wiring device as described in claim 2, characterized in that: The fixing mechanism (200) further includes a storage component (205) detachably disposed on one side of the sheath (201). The storage component (205) includes a base (205a) detachably disposed on one side of the sheath (201). A take-up drum (205b) is detachably disposed on the side of the base (205a) away from the sheath (201). A threading hole (205c) is provided on the base (205a) and the threading hole (205c) extends into the inside of the take-up drum (205b).

4. The wiring device as described in claim 3, characterized in that: The storage component (205) also includes a first elastic band (205d) with both ends fixed to the base (205a), and the sheath (201) is inserted inside the first elastic band (205d).

5. The wiring device as described in claim 4, characterized in that: The storage component (205) also includes a second elastic band (205e) that is fixed at two points on the base (205a). The take-up tube (205b) is coaxially provided with a second annular groove (205f) on its outside, and the second elastic band (205e) is sleeved in the second annular groove (205f).

6. The wiring device as described in claim 5, characterized in that: The storage component (205) also includes a first limiting groove (205g) disposed on the base (205a), and the sheath (201) extends into the first limiting groove (205g).

7. The wiring device as described in claim 6, characterized in that: The storage component (205) also includes a second limiting groove (205h) disposed on the base (205a), and the take-up tube (205b) extends into the second limiting groove (205h).

8. The wiring device as described in claim 7, characterized in that: The storage assembly (205) also includes a cover (205i) disposed at the end of the take-up tube (205b), the cover (205i) having a wire hole (205j) at its center, and the cover (205i) having an opening (205k) extending from the side wall of the cover (205i) to the wire hole (205j).

9. The wiring device as described in claim 8, characterized in that: The cap (205i) and the take-up drum (205b) are connected by a threaded or magnetic adsorption detachable connection.

10. The wiring device according to any one of claims 1-9, characterized in that: The retaining ring (202) is a stainless steel clamp or a stainless steel cable tie.

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