Wide-body junction box with anti-stress structure
By designing a photovoltaic junction box with a wide body stress-proof structure, the problems of small welding heads and concentrated stress in the prior art are solved, and the effect of applying large welding heads and preventing glass components from crushing is achieved.
Patent Information
- Application Number
- CN202420564610.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The welding heads of existing photovoltaic junction boxes are small and cannot be used for large welding head customers. At the same time, the four bump structures are prone to stress concentration when fixed to the glass assembly, resulting in crushing of the glass assembly.
A junction box with a wide body stress-proof structure is designed. The box body is widened to accommodate the large welding head. Instead, the adhesive surface and glued bottom surface with segment difference are used to reduce the stress with the glass assembly and prevent the glass assembly from crushing.
It is suitable for the needs of large welding head customers. At the same time, through the improved adhesive surface design, the stress between the glass assembly is reduced, and the glass assembly is prevented from crushing, meeting the mechanical requirements.
Smart Images
Figure CN222785959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of junction boxes, in particular to a junction box with a wide body anti-stress structure. Background Art
[0002] The photovoltaic junction box is a connection device between the solar cell array composed of solar cell modules and the solar charging control device. Its main function is to connect and protect solar photovoltaic modules, connect the power generated by solar cells to external lines, and conduct the current generated by photovoltaic modules.
[0003] The welding heads of conventional photovoltaic junction boxes are currently small and cannot be used by customers with large welding heads. At the same time, the back of the current junction box has four convex structures. When it is fixed on a glass component, the four convex structures are prone to stress concentration and crushing the glass component.
[0004] Therefore, in order to solve the deficiencies in the prior art, it is necessary to design a junction box with a simple structure and a wide body and anti-stress structure. Utility Model Content
[0005] The utility model provides a junction box with a wide body and an anti-stress structure to solve the problems of the prior art.
[0006] The purpose of the utility model can be achieved through the following technical solutions: A junction box with a wide body anti-stress structure includes: a box body, a diode, a tin block, a cable and a wire pressing block, the diode is clamped and fixed in the cavity of the box body, the cable is connected to one side of the diode and passes through the box body, the wire pressing block is clamped on the box body and presses the cable, the tin block is fixed to the upper end of the diode, and the upper end of the tin block is connected to a welding head, a U-shaped groove is provided on the outer side of the bottom of the box body, a protrusion is provided in the middle of the bottom of the box body, the bonding surface of the protrusion is located above the glue-applied bottom surface of the box body, and a glue injection hole connected to the cavity is provided inside the protrusion.
[0007] As a further improvement, the glue injection hole comprises a connected glue injection hole 1 and a connected glue injection hole 2, the cross section of the glue injection hole 2 is W-shaped, and a guide hole is provided inside the glue injection hole 2.
[0008] As a further improvement, a supporting guide post is provided inside the cavity of the box body, and a socket for the supporting guide post to pass through is provided on the diode.
[0009] As a further improvement, the support guide posts and the jacks are symmetrically arranged in four groups.
[0010] Compared with the prior art, the junction box with a wide body and anti-stress structure of the utility model has the following beneficial effects:
[0011] The width of the box body is widened to increase the volume of the internal cavity, which is suitable for customers with large welding heads. The original four protrusions are changed into a step-difference adhesive surface and a gluing bottom surface. The adhesive surface area is large, which reduces the stress between the glass component and the adhesive during gluing, preventing the stress from crushing the glass component and meeting the mechanical requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of the utility model
[0013] Figure 2 A structural diagram of another perspective of the utility model
[0014] Figure 3 This is a structural diagram of the explosion diagram of the utility model
[0015] In the figure, 1-box body, 11-cavity, 12-U-shaped groove, 13-protrusion, 131-bonding surface, 14-glue bottom surface, 15-glue filling hole, 151-glue filling hole one, 152-glue filling hole two, 153-guide hole, 16-support guide column, 2-diode, 21-jack, 3-tin block, 4-cable, 5-wire pressing block, 6-welding head. DETAILED DESCRIPTION
[0016] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0018] Below is a combination of the embodiments and the attached Figures 1 to 3 , the technical solution of the utility model is further elaborated.
[0019] Example 1
[0020] A junction box with a wide body anti-stress structure comprises: a box body 1, a diode 2, a tin block 3, a cable 4 and a wire pressing block 5, wherein the diode 2 is clamped and fixed in a cavity 11 of the box body 1, the cable 4 is connected to one side of the diode 2 and is arranged outside the box body 1, the wire pressing block 5 is clamped on the box body 1 and presses the cable 4, the tin block 3 is fixed to the upper end of the diode 2, and the upper end of the tin block 3 is connected to a welding head 6, a U-shaped groove 12 is provided on the outer side of the bottom of the box body 1, a protrusion 13 is provided in the middle of the bottom of the box body 1, a bonding surface 131 of the protrusion 13 is located above the glue-applied bottom surface 14 of the box body 1, and a glue injection hole 15 connected to the cavity 11 is provided inside the protrusion 13.
[0021] like Figure 1-2 As shown, the working principle of the utility model is as follows: the width of the box body 1 is widened, the volume of the internal cavity 11 is increased, and then it is suitable for customers with large welding heads. The original four protrusions are changed into a step-difference adhesive surface 131 and a adhesive bottom surface 14. The adhesive surface 131 has a large area, which reduces the stress between the glass component and the adhesive during gluing, thereby preventing the stress from crushing the glass component and meeting the mechanical requirements.
[0022] As a further preferred embodiment, the glue injection hole 15 includes a connected glue injection hole 151 and a glue injection hole 152, the cross section of the glue injection hole 152 is W-shaped, and a guide hole 153 is arranged inside the glue injection hole 152. The glue injection hole 15 is designed with a step difference and a hollow design, so that the potting glue can flow better and bubbles are not easily generated.
[0023] As a further preferred embodiment, a support guide post 16 is provided inside the cavity 11 of the box body 1 , and a plug hole 21 is provided on the diode 2 for the support guide post 16 to pass through, so as to facilitate the installation of the diode 2 inside the box body 1 .
[0024] As a further preferred embodiment, the support guide pillars 16 and the insertion holes 21 are symmetrically arranged in four groups to improve the installation stability of the diode 2.
[0025] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A junction box with a wide body anti-stress structure, characterized in that: include: A box body, a diode, a tin block, a cable and a wire pressing block, wherein the diode is clamped and fixed in the cavity of the box body, the cable is connected to one side of the diode and passes through the box body, the wire pressing block is clamped on the box body and presses the cable, the tin block is fixed to the upper end of the diode, and the upper end of the tin block is connected to a welding head, a U-shaped groove is provided on the outer side of the bottom of the box body, a protrusion is provided in the middle of the bottom of the box body, the bonding surface of the protrusion is located above the glue-applied bottom surface of the box body, and a glue injection hole connected to the cavity is provided inside the protrusion.
2. A junction box with a wide body anti-stress structure according to claim 1, characterized in that: The glue injection hole comprises a first glue injection hole and a second glue injection hole which are connected to each other. The cross section of the second glue injection hole is W-shaped, and a guide hole is arranged inside the second glue injection hole.
3. The wide-body anti-stress structure junction box according to claim 1, characterized in that: A supporting guide column is arranged inside the cavity of the box body, and a plug hole for the supporting guide column to pass through is arranged on the diode.
4. A junction box with a wide body anti-stress structure according to claim 3, characterized in that: The support guide pillars and the insertion holes are symmetrically arranged in four groups.