Photovoltaic module connecting device and system

Abstract

The utility model discloses a photovoltaic module connecting device and system, and belongs to the technical field of solar power generation auxiliary equipment, the photovoltaic module connecting device comprises a sleeve and a plug-in component, a drum spring is arranged in the sleeve, the drum spring is provided with a pressing part which is arranged in a manner of sinking inwards along the radial direction, the plug-in component comprises a plug-in part and an isolation sleeve, the isolation sleeve is arranged at the outer side of the plug-in part, and the plug-in component is arranged in the sleeve. A cavity used for containing the sleeve is formed between the inserting part and the isolation sleeve, the isolation sleeve is longer than the inserting part, the outer diameter of the isolation sleeve is gradually reduced from the position far away from the head end, and after the sleeve and the plug-in assembly are installed, the inner wall of the sleeve is attached to the inserting part, and the outer wall of the sleeve is attached to the inner wall of the isolation sleeve. The utility model also discloses a system based on the photovoltaic module connecting device, the structure can prevent insects from directly staying or netting at the interface of the photovoltaic module connecting device, and the photovoltaic module connecting device also has the advantages of water resistance, simple structure, convenience in use and high practicability. And the service life of the photovoltaic module connecting device is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar power generation auxiliary equipment, and specifically relates to a photovoltaic component connection device and system. Background Art

[0002] At present, photovoltaic connection devices are one of the components widely used in the industrial field. They are responsible for the electrical connection between different components, such as connecting photovoltaic modules, and are currently the most active products on the market. In response to the needs of different usage environments, the market has also designed a variety of photovoltaic connection devices. When designing the device, the main considerations are product waterproofing, corrosion resistance, and resistance of the connection part (conductive part).

[0003] With the rapid development of photovoltaic modules, the scope of photovoltaic modules has gradually expanded to automobiles, computers, mobile phones and various digital products. In addition to the basic requirements of low resistance, waterproof, corrosion resistance, etc., different fields have different requirements for photovoltaic connection devices. Taking the small and medium-sized photovoltaic modules used by the public as an example, the photovoltaic connection device composed of a male connector and a female connector that are matched with each other is still the main one. When using this structure, it is found that after the male connector and the female connector are plugged in, there are still problems such as spiders easily weaving webs at the connection part and mosquitoes staying at the interface. At the same time, dust accumulation is prone to affect the service life of the photovoltaic connection device. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problem and proposes a photovoltaic module connection device and system. Even if spiders weave webs at the connection port outside the connection device or mosquitoes stay at the interface, it will not affect the normal use of the photovoltaic module connection device. At the same time, the structure helps to prevent rodents and water, thereby extending the service life of the photovoltaic module connection device.

[0005] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0006] A photovoltaic module connection device includes a sleeve and a matching plug-in assembly, wherein a drum spring is arranged in the sleeve, and the drum spring has a pressing portion that is recessed radially inward, and the plug-in assembly includes a plug-in portion and an isolating sleeve, wherein the isolating sleeve is arranged outside the plug-in portion, and a cavity for accommodating the sleeve is arranged between the plug-in portion and the isolating sleeve.

[0007] The isolation sleeve is longer than the plug-in portion, and the outer diameter of the isolation sleeve gradually decreases from the head end away. When the sleeve and the plug-in assembly are installed, the inner wall of the sleeve fits the plug-in portion, and the outer wall of the sleeve fits the inner wall of the isolation sleeve.

[0008] The plug-in interface end of the sleeve and the head end of the plug-in assembly in contact with the plug-in interface end of the sleeve are provided with grooves with the same symbols.

[0009] Furthermore, the shape of the groove is a groove structure in the shape of “─”, “│” or “┼”.

[0010] Furthermore, a limiting hole for limiting the movement of the drum spring is provided at the tail of the sleeve.

[0011] Furthermore, a plurality of protrusions are arranged on the outside of the isolation sleeve.

[0012] Furthermore, the spacing between adjacent protrusions longitudinally arranged on the isolation sleeve is 2-6 mm.

[0013] A photovoltaic system comprises a plurality of photovoltaic modules and the photovoltaic module connecting device as described above, wherein the photovoltaic modules are connected in series or in parallel via the photovoltaic module connecting device.

[0014] Beneficial effects of the utility model:

[0015] 1. In the utility model, a drum spring is arranged in the sleeve, and the drum spring has a pressing portion that is recessed radially inward. The plug-in assembly includes a plug-in portion and a spacer sleeve. The spacer sleeve is arranged on the outside of the plug-in portion. A cavity for accommodating the sleeve is arranged between the plug-in portion and the spacer sleeve. The spacer sleeve is longer than the plug-in portion, and the outer diameter of the spacer sleeve gradually decreases away from the head end. When the sleeve and the plug-in assembly are installed, the inner wall of the sleeve fits the plug-in portion, and the outer wall of the sleeve fits the inner wall of the spacer sleeve.

[0016] The same symbol grooves are provided at the plug-in interface end of the sleeve and the head end of the plug-in assembly that contacts the plug-in interface end of the sleeve, so that users can quickly identify matching parts and the public can distinguish parts. At the same time, in this solution, the grooves are isolated and covered inside, which is not easy to accumulate dust and can be used normally.

[0017] 2. In the present invention, the groove is preferably designed to be a groove structure in the shape of "─", "│" or "┼", which has a simple structure, is easy to process and is convenient to identify.

[0018] 3. In the present invention, the isolation sleeve is provided with a plurality of convex points on the outside, and the adjacent convex points cannot be too far apart. For example, the spacing between the adjacent convex points arranged in the longitudinal direction is preferably 2-6 mm, and should not exceed 6 mm. It is also preferable that the convex points are arranged as arc-shaped convex points.

[0019] Fourth, in the present invention, by using the photovoltaic module connection device of the present invention in conjunction with the photovoltaic modules, the photovoltaic modules can be connected in series or in parallel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the photovoltaic module connection device of the utility model.

[0021] Figure 2 This is an enlarged view of the structure of the drum spring.

[0022] Figure 3 It is a structural schematic diagram of another implementation of a photovoltaic module connection device.

[0023] Figure 4 It is a structural schematic diagram of another photovoltaic module connection device.

[0024] Figure 5 This is a connection diagram of a photovoltaic system.

[0025] Among them, 1. sleeve; 2. plug-in assembly; 3. drum spring; 4. groove; 5. limit hole; 6. protrusion; 1.1. plug-in interface end; 2.1. plug-in part; 2.2. isolation sleeve; 2.3. cavity; 2.4. plug-in assembly head end; 3.1. pressing part; A. photovoltaic module connection device; B. photovoltaic module. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0027] Example 1

[0028] This embodiment is the most basic implementation method. Taking a specific photovoltaic module connection device as an example, this solution is further explained. The photovoltaic module connection device A includes a sleeve 1 and a matching plug-in component 2. Figure 1-2 The sleeve 1 is provided with a drum spring 3, and the drum spring 3 has a pressing portion 3.1 which is recessed radially inward. The plug-in assembly 2 includes a plug-in portion 2.1 and an isolation sleeve 2.2, and the isolation sleeve 2.2 is arranged on the outside of the plug-in portion 2.1. A cavity 2.3 for accommodating the sleeve 1 is provided between the plug-in portion 2.1 and the isolation sleeve 2.2.

[0029] The isolation sleeve 2.2 is longer than the plug-in portion 2.1, and the outer diameter of the isolation sleeve 2.2 gradually decreases from the head end. When the sleeve 1 and the plug-in assembly 2 are installed, the inner wall of the sleeve 1 fits the plug-in portion 2.1, and the outer wall of the sleeve 1 fits the inner wall of the isolation sleeve 2.2.

[0030] As described, the plug-in interface end 1.1 of the sleeve 1 and the head end of the plug-in assembly 2 in contact with the plug-in interface end 1.1 of the sleeve 1 are provided with grooves 4 with the same symbols.

[0031] Preferably, the shape of the groove 4 can be set to a groove structure in the shape of “─”, “│” or “┼”, which has a simple structure and is easy to identify and process.

[0032] Example 2

[0033] Compared with the embodiment 1, the present embodiment is different in that the tail of the sleeve 1 is provided with a limiting hole 5 for limiting the movement of the drum spring 3, see 3. In practical applications, it can be considered whether to design a clamp on the outside of the drum spring 3 according to the needs, so as to enhance the contact strength between the pressing part and the plug part 2.1, ensure the electrical conduction between the plug part 2.1 and the drum spring 3, slow down the fatigue aging of the material, and extend the service life of the drum spring.

[0034] Example 3

[0035] The difference between this embodiment and embodiments 1 and 2 is that Figure 4 The isolation sleeve 2.2 is provided with a plurality of protrusions 6 on the outside.

[0036] Preferably, the distance between adjacent protrusions 6 longitudinally arranged on the isolation sleeve 2.2 is preferably 2-6 mm.

[0037] Example 4

[0038] This embodiment is a preferred implementation method of a photovoltaic system. Figure 5 , including multiple photovoltaic modules B and a photovoltaic module connecting device A, wherein the photovoltaic modules B are connected in series through the photovoltaic module connecting device A.

[0039] The photovoltaic module connection device A comprises a sleeve 1 and a matching plug-in component 2, Figure 4 The sleeve 1 is provided with a drum spring 3, and the drum spring 3 has a pressing portion 3.1 which is recessed radially inward. The plug-in assembly 2 includes a plug-in portion 2.1 and an isolation sleeve 2.2, and the isolation sleeve 2.2 is arranged on the outside of the plug-in portion 2.1. A cavity 2.3 for accommodating the sleeve 1 is provided between the plug-in portion 2.1 and the isolation sleeve 2.2.

[0040] The isolation sleeve 2.2 is longer than the plug-in portion 2.1, and the outer diameter of the isolation sleeve 2.2 gradually decreases from the head end. When the sleeve 1 and the plug-in assembly 2 are installed, the inner wall of the sleeve 1 fits the plug-in portion 2.1, and the outer wall of the sleeve 1 fits the inner wall of the isolation sleeve 2.2.

[0041] The plug-in interface 1.1 of the sleeve 1 and the head end of the plug-in assembly 2 that contacts the plug-in interface 1.1 of the sleeve 1 are provided with grooves 4 with the same symbols. The shape of the groove 4 is a "─" groove structure.

[0042] In this embodiment, a limiting hole 5 for limiting the movement of the drum spring 3 is provided at the tail end of the sleeve 1 .

[0043] In this embodiment, the outer portion of the isolation sleeve 2.2 is provided with a plurality of protrusions 6. The spacing between adjacent protrusions 6 arranged longitudinally on the isolation sleeve 2.2 is 4 mm.

Claims

1. A photovoltaic module connection device, characterized in that: The invention comprises a sleeve (1) and a matching plug-in assembly (2), wherein a drum spring (3) is arranged inside the sleeve (1), and the drum spring (3) has a pressing portion (3.1) which is recessed radially inwards, and the plug-in assembly (2) comprises a plug-in portion (2.1) and an isolating sleeve (2.2), wherein the isolating sleeve (2.2) is arranged outside the plug-in portion (2.1), and a cavity (2.3) for accommodating the sleeve (1) is arranged between the plug-in portion (2.1) and the isolating sleeve (2.2). The isolation sleeve (2.2) is longer than the plug-in portion (2.1), and the outer diameter of the isolation sleeve (2.2) gradually decreases from the head end away. When the sleeve (1) and the plug-in assembly (2) are installed, the inner wall of the sleeve (1) fits the plug-in portion (2.1), and the outer wall of the sleeve (1) fits the inner wall of the isolation sleeve (2.2). The plug-in interface end (1.1) of the sleeve (1) and the head end of the plug-in assembly (2) in contact with the plug-in interface end (1.1) of the sleeve (1) are provided with grooves (4) with the same symbols.

2. The photovoltaic module connection device according to claim 1, characterized in that: The groove (4) is in the shape of a "─" or "│" or "┼" shaped groove structure.

3. The photovoltaic module connection device according to claim 1, characterized in that: The rear end of the sleeve (1) is provided with a limiting hole (5) for limiting the movement of the drum spring (3).

4. A photovoltaic system, characterized in that: It comprises a plurality of photovoltaic modules (B) and a photovoltaic module connecting device (A) according to claim 1, wherein the photovoltaic modules (B) are connected in series or in parallel via the photovoltaic module connecting device (A).

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