Heat dissipation type photovoltaic junction box

Abstract

The utility model relates to the junction box field, and relates to a heat dissipation type photovoltaic junction box, which comprises a box body, a modularized diode, an inner copper sheet and an outer copper sheet, the bottom of the box body is provided with a glue filling hole communicated with an inner cavity, two sides of the bottom of the box body are fixedly provided with magnetic suction sheets I, two sides of the glue filling hole are provided with grooves, and the grooves are communicated with the inner copper sheet. The modularized diode is arranged in the box body, the inner copper sheet is arranged at the bottom of the modularized diode, the outer copper sheet is arranged in the groove, a second magnetic attraction sheet connected with the first magnetic attraction sheet in a magnetic attraction mode is fixed to the outer side of the outer copper sheet, and a copper rod penetrating through the box body to the inner cavity is arranged at the upper end of the outer copper sheet. The upper end of the copper rod is clamped in a bottom jack of the inner copper sheet, the modular diode firstly transmits heat to the inner copper sheet and then transmits the heat to the outer copper sheet through the copper column to conduct heat outwards, the large-area copper sheets are good in heat dissipation effect, rapid conduction of the heat of the diode is guaranteed, normal and stable operation of the diode is achieved, and meanwhile the outer copper sheet is connected through magnetic attraction, so that installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of junction boxes, and specifically to a heat-dissipating photovoltaic junction box. Background Technology

[0002] A photovoltaic junction box is a connection device between a solar cell array composed of solar cell modules and a solar charging control device. Its main function is to connect and protect the solar photovoltaic modules, connect the power generated by the solar cells to external lines, and conduct the current generated by the photovoltaic modules.

[0003] Currently, the mainstream photovoltaic junction box products use modular diodes. Because these modular diodes are encapsulated in epoxy resin, the heat generated by the modular diodes is transferred to the outside through the epoxy resin. Due to the material properties of epoxy resin, the heat dissipation speed is slow. In high-temperature environments, the slow heat transfer will cause the modular diodes to always be at a high temperature, which will affect the performance of the photovoltaic junction box.

[0004] Therefore, in order to overcome the shortcomings of the existing technology, it is necessary to design a simple heat-dissipating photovoltaic junction box. Utility Model Content

[0005] This invention provides a heat-dissipating photovoltaic junction box to address the problems of existing technologies.

[0006] The objective of this utility model can be achieved through the following technical solution: A heat dissipation photovoltaic junction box includes: a box body, a modular diode, an inner copper sheet, and an outer copper sheet. The bottom of the box body is provided with a potting hole that communicates with the inner cavity. Magnetic suction pieces are fixed on both sides of the bottom of the box body. Grooves are provided on both sides of the potting hole. The modular diode is disposed inside the box body. The inner copper sheet is disposed at the bottom of the modular diode. The outer copper sheet is disposed in the groove. A magnetic suction piece is fixed on the outside of the outer copper sheet and magnetically connected to the magnetic suction piece. A copper rod is provided at the upper end of the outer copper sheet, passing through the box body to the inner cavity. The upper end of the copper rod is engaged in the insertion hole on the bottom surface of the inner copper sheet.

[0007] In a further improvement, two sets of inner copper sheets are symmetrically arranged, and the two sets of inner copper sheets are fixed on both sides of the modular diode. Each set of inner copper sheets is provided with four sets of bottom surface insertion holes.

[0008] In a further improvement, the outer copper sheet includes four sets of copper base sheets, which are interconnected by copper strips, and the magnetic attracting sheet two is also connected to the copper base sheets by copper strips.

[0009] In a further improvement, the bottom of the box is provided with a circular hole, and the magnetic absorbing piece one and the magnetic absorbing piece two are sequentially arranged in the circular hole.

[0010] As a further improvement, the housing is provided with positioning guide posts, and the modular diode is provided with positioning holes that match the positioning guide posts.

[0011] Compared with the prior art, the beneficial effects of this heat-dissipating photovoltaic junction box are as follows:

[0012] Modular diodes dissipate heat through thermally conductive silicone and the housing, while simultaneously transferring heat to the inner copper plate and then to the outer copper plate via copper pillars. The large copper plate provides excellent heat dissipation, ensuring rapid heat conduction and better performance. This design ensures the modular diode operates stably and efficiently. Furthermore, the outer copper plate is magnetically connected for easy installation. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of the exploded view of this utility model.

[0015] Figure 3 for Figure 2 Another perspective on the structure

[0016] In the diagram, 1-box body, 11-potting hole, 12-magnetic plate one, 13-groove, 14-round hole, 15-positioning guide post, 2-modular diode, 21-positioning hole, 3-inner copper sheet, 31-bottom insertion hole, 4-outer copper sheet, 41-magnetic plate two, 42-copper base sheet, 43-copper strip, 44-copper rod. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The following describes the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0020] Example 1

[0021] A heat-dissipating photovoltaic junction box includes: a box body 1, a modular diode 2, an inner copper sheet 3, and an outer copper sheet 4. The bottom of the box body 1 is provided with a potting hole 11 communicating with the inner cavity. Magnetic suction pieces 12 are fixed on both sides of the bottom of the box body 1. Grooves 13 are provided on both sides of the potting hole 11. The modular diode 2 is disposed inside the box body 1. The inner copper sheet 3 is disposed at the bottom of the modular diode 2. The outer copper sheet 4 is disposed in the groove 13. A magnetic suction piece 41 is fixed on the outside of the outer copper sheet 4 and magnetically connected to the magnetic suction piece 12. A copper rod 44 is provided at the upper end of the outer copper sheet 4, passing through the box body 1 to the inner cavity. The upper end of the copper rod 44 is engaged in the insertion hole 31 on the bottom surface of the inner copper sheet 3.

[0022] like Figures 1-3 As shown, the working principle of this utility model is as follows: After the inner copper sheet 3 is fixed to the modular diode 2, it is installed into the box 1 as a whole. Then, the outer copper sheet 4 is placed in the groove 13, and the copper rod 44 passes through the box 1 to the inner cavity and is snapped into the bottom hole 31 of the inner copper sheet 3 of the modular diode 2 inside. At the same time, the magnetic suction piece 2 41 magnetically connects to the magnetic suction piece 12, thereby fixing the outer copper sheet 4. Finally, thermally conductive silicone is poured into the inner cavity of the box 1 through the potting hole 11.

[0023] The heat generated by the modular diode 2 is transferred to the inner copper sheet 3. The inner copper sheet 3 then transfers the heat to the outer copper sheet 4 through the copper pillar 44. On the one hand, the modular diode 2 dissipates some of the heat through the thermally conductive silicone and the housing. On the other hand, the heat is first transferred to the inner copper sheet and then to the outer copper sheet through the copper pillar for outward heat conduction. The large area of ​​copper sheet provides good heat dissipation, thus ensuring rapid heat conduction of the diode and better performance. This ensures rapid heat dissipation of the modular diode and its normal and stable operation. At the same time, the outer copper sheet is connected by magnetic attraction for easy installation.

[0024] As a further preferred embodiment, two sets of inner copper sheets 3 are symmetrically arranged, and the two sets of inner copper sheets 3 are fixed to both sides of the modular diode 2. Each set of inner copper sheets 3 has four sets of bottom surface insertion holes 31. This allows the heat of the modular diode 2 to be evenly transferred from both sides to the inner copper sheets 3, increasing the efficiency and uniformity of heat conduction, and helping to conduct heat away from the diode more quickly.

[0025] As a further preferred embodiment, the outer copper sheet 4 includes four sets of copper base sheets 42, which are interconnected by copper strips 43. The magnetic attractor 41 is also connected to the copper base sheets 42 by copper strips 43. This enhances the overall rigidity and thermal conductivity of the outer copper sheet 4. The connection between the copper base sheets 42 and the copper strips 43 forms a continuous heat conduction path, allowing heat to be evenly distributed across the entire outer copper sheet 4.

[0026] As a further preferred embodiment, the bottom of the box body 1 is provided with a circular hole 14, and the magnetic suction piece 12 and the magnetic suction piece 41 are sequentially disposed in the circular hole 14. This allows the magnetic suction piece 12 and the magnetic suction piece 41 to be magnetically connected through the circular hole 14, providing a simple and effective fixing method and facilitating the installation and removal of the outer copper sheet 4.

[0027] As a further preferred embodiment, the housing 1 is provided with positioning guide posts 15, and the modular diode 2 is provided with positioning holes 21 that match the positioning guide posts 15. This ensures the correct position and alignment of the modular diode 2 within the housing 1, which helps to improve the accuracy and reliability of assembly.

[0028] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A heat-dissipating photovoltaic junction box, characterized in that, include: The device comprises a housing, a modular diode, an inner copper sheet, and an outer copper sheet. The bottom of the housing has a potting hole that connects to the inner cavity. Magnetic plates are fixed on both sides of the bottom of the housing. Grooves are provided on both sides of the potting hole. The modular diode is disposed inside the housing. The inner copper sheet is disposed at the bottom of the modular diode. The outer copper sheet is disposed in the groove. A second magnetic plate is fixed on the outside of the outer copper sheet and magnetically connected to the first magnetic plate. A copper rod is provided at the upper end of the outer copper sheet, passing through the housing to the inner cavity. The upper end of the copper rod is engaged in the insertion hole on the bottom surface of the inner copper sheet.

2. The heat-dissipating photovoltaic junction box according to claim 1, characterized in that, Two sets of inner copper sheets are symmetrically arranged, and the two sets of inner copper sheets are fixed on both sides of the modular diode. Each set of inner copper sheets has four sets of bottom surface insertion holes.

3. A heat-dissipating photovoltaic junction box according to claim 1, characterized in that, The outer copper sheet includes four sets of copper base sheets, which are interconnected by copper strips. The magnetic attracting sheet two is also connected to the copper base sheets by copper strips.

4. A heat-dissipating photovoltaic junction box according to claim 1, characterized in that, The bottom of the box has a round hole, and the magnetic absorbing piece one and the magnetic absorbing piece two are sequentially arranged in the round hole.

5. A heat-dissipating photovoltaic junction box according to claim 1, characterized in that, The housing is equipped with positioning guide posts, and the modular diode is equipped with positioning holes that match the positioning guide posts.

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