High-sealing photovoltaic module junction box

Abstract

The utility model belongs to the technical field of photovoltaic junction boxes, and relates to a high-sealing photovoltaic module junction box, which comprises a box cover and a box body, the bottom of the box cover is provided with a sealing ring distributed along the whole circle of the box cover, the top of the box body is provided with a sealing groove matched with the sealing ring, the sealing ring comprises a first insertion piece and a second insertion piece, and the first insertion piece is provided with a first sealing groove. A first groove is formed between the first inserting piece and the second inserting piece, the sealing groove comprises a first positioning column and a second positioning column, the first positioning column is matched with the first groove in a sealing mode, and a second groove matched with the second inserting piece in a sealing mode is formed between the first positioning column and the second positioning column. And a first sealing ring and a second sealing ring are respectively arranged in the first groove and the second groove. Four sealing defense lines are formed from inside to outside, the overall firmness and the sealing performance of the junction box are greatly improved, the reliability of the junction box is greatly improved, and the junction box has the advantages of being simple in structure, stable, reliable, convenient, effective, capable of improving the sealing effect and the like.

Description

Technical Field

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

[0002] With the introduction of policies for offshore photovoltaic applications, offshore applications have become popular recently, and various companies have begun to develop offshore photovoltaic modules. Due to the high humidity, high salt content, high-frequency strong wind vibrations and large temperature differences in the marine environment, higher requirements are placed on the moisture resistance, salt spray resistance, and fastening strength of the module junction box.

[0003] A conventional junction box consists of a box body and a box cover. The box cover and the box body are fastened by a press-fit connection, but a gap between the box cover and the box body still exists. When used in the ocean, seawater may submerge the junction box. After a period of time, seawater enters the junction box through the gap and corrodes the metal conductors in the junction box, causing the junction box to fail. Therefore, conventional junction boxes are difficult to meet reliability requirements. Utility Model Content

[0004] The purpose of the utility model is to solve the defects and shortcomings in the prior art and to design a high-sealing photovoltaic component junction box which has a simple structure, is stable and reliable, is convenient and effective, and has improved sealing effect.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-sealing photovoltaic module junction box, including a box cover and a box body, the bottom of the box cover is provided with a sealing ring distributed along the entire circle of the box cover, and the top of the box body is provided with a sealing groove matching the sealing ring, the sealing ring includes a first plug-in piece and a second plug-in piece, a first groove is formed between the first plug-in piece and the second plug-in piece, the sealing groove includes a first positioning column and a second positioning column, the first positioning column is sealed with the first groove, and a second groove is formed between the first positioning column and the second positioning column to seal with the second plug-in piece.

[0006] Preferably, the bottoms of the first groove and the second groove are both designed to be arc-shaped, the end of the first positioning column is provided with a first arc-shaped boss matching the arc of the bottom of the first groove, and the end of the second insert is provided with a second arc-shaped boss matching the arc of the bottom of the second groove.

[0007] Preferably, a first sealing ring and a second sealing ring are respectively disposed inside the first groove and the second groove.

[0008] Preferably, the first sealing ring and the second sealing ring are both cylindrical sealing rings, and are both made of corrosion-resistant and aging-resistant silicone rubber.

[0009] Preferably, the first plug sheet and the second plug sheet are respectively provided with a first positioning boss and a second positioning boss, and the first positioning column and the second positioning column are respectively provided with a first positioning groove and a second positioning groove matching the first positioning boss and the second positioning boss.

[0010] Preferably, the first positioning boss and the second positioning boss are both triangular in design.

[0011] Preferably, the first positioning boss and the first positioning groove, as well as the second positioning boss and the second positioning groove are fixed by ultrasonic welding.

[0012] After adopting the above technical solution, the high-sealing photovoltaic module junction box provided by the utility model has the following beneficial effects:

[0013] The utility model can, through the design of the sealing rings in the first groove and the second groove, when the box cover and the box body are installed, the first arc-shaped boss can support the first sealing ring, and the second arc-shaped boss can support the second sealing ring, thereby ensuring a good seal between the first positioning column and the first groove, and between the second plug and the second groove; the arc-shaped design of the bottom of the first groove and the second groove, and the matching design of the first arc-shaped boss and the second arc-shaped boss can make the sealing effect better; the design of the positioning boss and the positioning groove can not only ensure the positioning effect, but also ensure that the box cover and the box body are firmly bonded together to achieve a completely sealed effect. Therefore, the utility model forms a total of 4 sealing lines from the inside to the outside, greatly improves the overall firmness and sealing of the junction box, greatly improves the reliability of the junction box, and has the advantages of simple structure, stability and reliability, convenience and effectiveness, and improved sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the box cover in the utility model;

[0015] Figure 2 It is a structural schematic diagram of the box body in the utility model;

[0016] Figure 3 It is a top view of the box cover in the utility model;

[0017] Figure 4 It is a top view of the box body in the utility model;

[0018] Figure 5 It is a side view of the box body in the utility model.

[0019] Among them: box cover 1, first groove 2, first sealing ring 3, first positioning boss 4, second arc-shaped boss 5, second positioning boss 6, box body 11, first arc-shaped boss 12, second sealing ring 13, first positioning groove 14, second groove 15, second positioning groove 16. DETAILED DESCRIPTION

[0020] The present invention is further described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] 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.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0026] The utility model discloses a high-sealing photovoltaic module junction box, such as Figure 1-5 As shown, it includes a box cover 1 and a box body 11, the internal conductor part of the box body 11 is sealed with high-resistance water-resistant silicone, and a sealing structure is used to further seal the box cover 1 and the box body 11. Specifically, a sealing ring distributed along the entire circle of the box cover 1 is provided at the bottom of the box cover 1, and a sealing groove matching the sealing ring is provided at the top of the box body 11. The sealing ring includes a first plug-in sheet and a second plug-in sheet, and a first groove 2 is formed between the first plug-in sheet and the second plug-in sheet. The sealing groove includes a first positioning column and a second positioning column, the first positioning column is sealed with the first groove 2, and a second groove 15 sealed with the second plug-in sheet is formed between the first positioning column and the second positioning column.

[0027] The first sealing ring 3 and the second sealing ring 13 are respectively arranged inside the first groove 2 and the second groove 15. The first sealing ring 3 and the second sealing ring 13 are both cylindrical sealing rings, and both are made of corrosion-resistant and aging-resistant silicone rubber. When the box cover 1 and the box body 11 are installed, the first positioning column will press the first sealing ring 3 between the end of the first positioning column and the bottom of the first groove 2, and the second plug-in piece will press the second sealing ring 13 between the end of the second plug-in piece and the bottom of the second groove 15, thereby ensuring that a good seal is formed between the first positioning column and the first groove 2, and between the second plug-in piece and the second groove 15. Furthermore, the bottoms of the first groove 2 and the second groove 15 are both arc-shaped, and the end of the first positioning column is provided with a first arc-shaped boss 12 matching the arc of the bottom of the first groove 2, and the end of the second plug-in piece is provided with a second arc-shaped boss 5 matching the arc of the bottom of the second groove 15. Such a design can ensure a better sealing effect.

[0028] The first plug-in piece and the second plug-in piece are respectively provided with a first positioning boss 4 and a second positioning boss 6, and the first positioning column and the second positioning column are respectively provided with a first positioning groove 14 and a second positioning groove 16 matching the first positioning boss 4 and the second positioning boss 6. The first positioning boss 4 and the second positioning boss 6 are both triangular in design, which can ensure that the box cover 1 and the box body 11 can achieve a positioning and clamping function through the matching positioning bosses and positioning grooves when the box cover 1 and the box body 11 are installed. Furthermore, when the box cover 1 and the box body 11 are installed, that is, after the first positioning boss 4 and the first positioning groove 14, as well as the second positioning boss 6 and the second positioning groove 16 are clamped and positioned, ultrasonic welding is used to firmly bond the first positioning boss 4 and the first positioning groove 14, as well as the second positioning boss 6 and the second positioning groove 16 together to achieve a complete sealing effect.

[0029] To sum up, the utility model is a high-sealing photovoltaic module junction box, which forms 4 sealing lines from the inside to the outside, greatly improves the overall firmness and sealing of the junction box, greatly improves the reliability of the junction box, has the advantages of simple structure, stability and reliability, convenience and effectiveness, and improves the sealing effect. It has great market value and deserves wide promotion and application.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly sealed photovoltaic module junction box, comprising a box cover (1) and a box body (11), characterized in that: The bottom of the box cover (1) is provided with a sealing ring distributed along the entire circle of the box cover (1); the top of the box body (11) is provided with a sealing groove matching the sealing ring; the sealing ring comprises a first plug-in sheet and a second plug-in sheet, a first groove (2) is formed between the first plug-in sheet and the second plug-in sheet, the sealing groove comprises a first positioning column and a second positioning column, the first positioning column is sealingly matched with the first groove (2), and a second groove (15) sealingly matched with the second plug-in sheet is formed between the first positioning column and the second positioning column.

2. A highly sealed photovoltaic module junction box according to claim 1, characterized in that: The bottoms of the first groove (2) and the second groove (15) are both designed to be arc-shaped, the end of the first positioning column is provided with a first arc-shaped boss (12) matching the arc of the bottom of the first groove (2), and the end of the second insert is provided with a second arc-shaped boss (5) matching the arc of the bottom of the second groove (15).

3. The high-seal photovoltaic module junction box according to claim 1, characterized in that: A first sealing ring (3) and a second sealing ring (13) are respectively arranged inside the first groove (2) and the second groove (15).

4. A highly sealed photovoltaic module junction box according to claim 3, characterized in that: The first sealing ring (3) and the second sealing ring (13) are both cylindrical sealing rings, and are both made of corrosion-resistant and aging-resistant silicone rubber.

5. The high-seal photovoltaic module junction box according to claim 1, characterized in that: A first positioning boss (4) and a second positioning boss (6) are respectively provided on the first plug-in piece and the second plug-in piece, and a first positioning groove (14) and a second positioning groove (16) matching the first positioning boss (4) and the second positioning boss (6) are respectively provided on the first positioning column and the second positioning column.

6. A highly sealed photovoltaic module junction box according to claim 5, characterized in that: The first positioning boss (4) and the second positioning boss (6) are both triangular in design.

7. A highly sealed photovoltaic module junction box according to claim 5, characterized in that: The first positioning boss (4) and the first positioning groove (14), as well as the second positioning boss (6) and the second positioning groove (16), are fixed by ultrasonic welding.

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