Photovoltaic junction box with rapid heat dissipation

Abstract

The utility model discloses a photovoltaic junction box of quick heat dissipation, including box body, and the cover board of cover setting on the box body, and constitute the installation space between box body and cover board, the conductive sheet group is provided in the installation space, the conductive sheet group includes first conductive sheet, second conductive sheet to set in the intermediate connecting piece of first conductive sheet, second conductive sheet, and the intermediate connecting piece is connected first conductive sheet and second conductive sheet respectively through diode, the diode includes the main part to set the connecting lead of main part both ends, and the first conductive sheet and second conductive sheet form the positioning groove of the main part and insert, the positioning groove constitutes the support heat dissipation convex part of the support main part bottom, the support heat dissipation convex part sticks to the main part outer contour.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic junction box technology, specifically to a photovoltaic junction box with rapid heat dissipation. Background Technology

[0002] Photovoltaic junction boxes are key components of solar modules. They are mainly used to collect and transmit the current generated by the solar cells and prevent hot spot effects through built-in bypass diodes, protecting the modules from power loss caused by local shading or damage. They are also waterproof, dustproof, and weather-resistant, ensuring safe and reliable electrical connections, extending the lifespan of the modules, and improving the overall power generation efficiency and stability of the system.

[0003] For example, a split-type photovoltaic junction box disclosed in CN213305348U includes a split-type box body, which consists of a split-type bottom box and a split-type cover covering the bottom box. The split-type bottom box is provided with a first copper substrate and a second copper substrate, and a photovoltaic diode mounting position is provided between the first copper substrate and the second copper substrate. A mounting groove is provided in the middle of the first and second protective edges. A first protrusion on the first copper substrate and a second protrusion on the second copper substrate have a flat upper surface. A diode is installed in the photovoltaic diode mounting position, and the two terminals of the diode are soldered to the upper surface of the first and second protrusions.

[0004] However, the lack of heat dissipation structures for diodes in existing technologies results in poor heat dissipation, which not only increases the risk of hot spot effect but may also cause diode failure. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model proposes a photovoltaic junction box with rapid heat dissipation.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A photovoltaic junction box with rapid heat dissipation includes a box body and a cover plate covering the box body, and the box body and the cover plate form an installation space. A conductive sheet group is arranged in the installation space. The conductive sheet group includes a first conductive sheet, a second conductive sheet, and an intermediate connecting piece disposed on the first conductive sheet and the second conductive sheet. The intermediate connecting piece is connected to the first conductive sheet and the second conductive sheet respectively through a diode. The diode includes a main body and connecting leads disposed at both ends of the main body. Positioning grooves for the main body to be inserted are formed on the first conductive sheet and the second conductive sheet. The positioning grooves form a heat-dissipating protrusion supporting the bottom of the main body, and the heat-dissipating protrusion conforms to the outer contour of the main body.

[0007] Preferably, the heat-dissipating protrusion is integrally formed with the first conductive sheet or the second conductive sheet, and the heat-dissipating protrusion is arc-shaped. Through the above improvements, the heat-dissipating protrusion can improve the stability of diode installation, and at the same time, the heat-dissipating protrusion can absorb the heat generated by the body of the diode to improve the heat dissipation effect.

[0008] Preferably, the first conductive sheet, the second conductive sheet, and the intermediate connecting sheet are provided with connecting grooves, and the connecting leads are placed in the connecting grooves. Through the above improvements, the main body of the diode is placed in the connecting grooves, which improves the stability of the diode installation. At the same time, the connecting grooves can absorb the heat generated by the connecting leads of the diode to improve the heat dissipation effect.

[0009] Preferably, the diode is tilted on the first conductive plate and the second conductive plate. Through the above improvements, the internal structure is made more compact, thereby reducing the volume of the entire photovoltaic junction box, and increasing the contact area between the diode and the first and second conductive plates, thereby improving the heat dissipation effect of the diode.

[0010] Preferably, a positioning post is provided in the installation space, and the conductive sheet assembly is placed on the positioning post, dividing the installation space into a first area and a second area. Through the above improvements, the positioning post and the conductive sheet assembly are used in conjunction to improve the stability of the installation of the conductive sheet assembly. When potting, the potting compound will fill the first area and the second area, and the first area and the second area will dissipate heat from the conductive sheet assembly respectively, thereby improving the heat dissipation effect.

[0011] Preferably, the bottom of the box body forms a potting groove, and the intermediate connecting piece forms a glue passage for the potting groove to be arranged opposite to it. The glue passage connects the first area and the second area, and the bottom of the box body forms a busbar guide groove for connecting the conductive sheet assembly. With the above improvements, the busbar can be inserted using the busbar guide groove to improve the convenience of busbar installation. Furthermore, the potting groove can be used for potting. During the potting process, the potting compound enters from the potting groove and enters the installation space through the glue passage to fill the entire installation space and achieve heat conduction of the conductive sheet assembly.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects: The first conductive plate and the second conductive plate are connected by a diode through an intermediate connecting piece. Positioning grooves are set on the first conductive plate and the second conductive plate, and heat dissipation protrusions are set in the positioning grooves. The heat dissipation protrusions can not only support the diode to improve the stability of the diode installation, but also increase the heat dissipation effect of the diode body. This not only reduces the risk of hot spot effect and extends the service life of the diode, but also improves the safety of the photovoltaic junction box during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the structure of the conductive sheet assembly and diode of this utility model. Figure 4 This is a schematic diagram of the bottom structure of the conductive sheet assembly of this utility model; Figure 5 This is a schematic diagram of the internal structure of the box body according to Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the bottom structure of the box body according to Embodiment 1 of this utility model; In the diagram: 1. Box body; 2. Cover plate; 3. Installation space; 4. Conductive sheet assembly; 5. Diode; 1.1. First conductive sheet; 1.2. Second conductive sheet; 1.3. Intermediate connecting piece; 1.4. Main body; 1.5. Connecting lead; 1.6. Positioning groove; 1.7. Heat dissipation support protrusion; 1.8. Connecting groove; 2.1. Positioning post; 2.2. Glue potting groove; 2.3. Glue passage; 2.4. First area; 2.5. Second area; 2.6. Busbar guide groove; 3.1. Heat dissipation bracket; 3.2. Heat sink; 3.3. Glue passage; 3.4. Limiting protrusion; Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0016] like Figure 1-6 As shown, a photovoltaic junction box with rapid heat dissipation includes a box body 1 and a cover plate 2 covering the box body 1. The box body 1 and the cover plate 2 form an installation space 3. A conductive sheet group 4 is provided in the installation space 3. The conductive sheet group 4 includes a first conductive sheet 1.1, a second conductive sheet 1.2, and an intermediate connecting piece 1.3 disposed between the first conductive sheet 1.1 and the second conductive sheet 1.2. The intermediate connecting piece 1.3 is connected to the first conductive sheet 1.1 and the second conductive sheet 1.2 respectively through a diode 5.

[0017] Specifically, the diode 5 includes a main body 1.4 and connecting leads 1.5 disposed at both ends of the main body 1.4. The first conductive sheet 1.1 and the second conductive sheet 1.2 are formed with positioning grooves 1.6 for the main body 1.4 to be inserted. The positioning grooves 1.6 form a heat-dissipating protrusion 1.7 that supports the bottom of the main body 1.4. The heat-dissipating protrusion 1.7 fits the outer contour of the main body 1.4.

[0018] The first conductive plate 1.1 and the second conductive plate 1.2 are connected to the diode 5 via the intermediate connecting piece 1.3. Positioning grooves 1.6 are provided on the first conductive plate 1.1 and the second conductive plate 1.2, and a heat dissipation support protrusion 1.7 is provided in the positioning groove 1.6. The heat dissipation support protrusion 1.7 can not only support the diode 5 to improve the stability of the diode 5 installation, but also increase the heat dissipation effect of the body 1.4 of the diode 5. This not only reduces the risk of hot spot effect and improves the service life of the diode 5, but also improves the safety of the photovoltaic junction box during use.

[0019] After the potting compound is applied inside the housing 1, the heat dissipation protrusion 1.7 can quickly conduct the heat from the diode 5 into the potting compound and dissipate it through the potting compound, thereby effectively improving the heat dissipation effect of the entire photovoltaic junction box.

[0020] Furthermore, the heat-dissipating protrusion 1.7 is integrally formed with the first conductive sheet 1.1 or the second conductive sheet 1.2, and the heat-dissipating protrusion 1.7 is arc-shaped, while the body 1.4 of the diode 5 is cylindrical. The heat-dissipating protrusion 1.7 is arranged around the outer periphery of the body 1.4. The heat-dissipating protrusion 1.7 can not only improve the stability of the diode 5 installation, but also absorb the heat generated by the body 1.4 of the diode 5 and quickly conduct the heat to the potting compound, thereby improving the heat dissipation effect of the diode 5.

[0021] In addition, the first conductive sheet 1.1, the second conductive sheet 1.2, and the intermediate connecting sheet 1.3 are provided with a connecting groove 1.8, and the connecting lead 1.5 is placed in the connecting groove 1.8. By placing the main body 1.4 of the diode 5 in the connecting groove 1.8, the stability of the diode 5 installation is improved. At the same time, the connecting groove 1.8 can absorb the heat generated by the connecting lead 1.5 of the diode 5 to improve the heat dissipation effect.

[0022] Preferably, the diode 5 is tilted on the first conductive plate 1.1 and the second conductive plate 1.2, thereby making the internal structure more compact, reducing the volume of the entire photovoltaic junction box, and increasing the contact area between the connecting lead 1.5 of the diode 5 and the first conductive plate 1.1 and the second conductive plate 1.2, so as to further improve the heat dissipation effect of the diode 5.

[0023] like Figure 1-6 As shown, a further explanation of the cooperation between the housing 1 and the conductive sheet group 4 is provided: the housing 1 forms an installation space 3, and a positioning post 2.1 is provided in the installation space 3. The conductive sheet group 4 is placed on the positioning post 2.1, dividing the installation space 3 into a first region 2.4 and a second region 2.5. The positioning post 2.1 cooperates with the conductive sheet group 4 to improve the stability of the installation of the conductive sheet group 4. During potting, the potting compound will fill the first region 2.4 and the second region 2.5, respectively, so that the first region 2.4 and the second region 2.5 can dissipate heat from the conductive sheet group 4 to improve the heat dissipation effect.

[0024] Furthermore, the bottom of the box body 1 forms a potting groove 2.2, and the intermediate connecting piece 1.3 has a glue passage 2.3 that is opposite to the potting groove 2.2. The glue passage 2.3 connects the first region 2.4 and the second region 2.5. During the potting process, the potting glue enters from the potting groove 2.2 and enters the installation space 3 through the glue passage 2.3 to fill the entire installation space 3 and realize the heat conduction of the conductive sheet group 4.

[0025] In addition, the bottom of the housing 1 is provided with a busbar guide groove 2.6 for connecting the conductive sheet group 4. The busbar can be inserted through the busbar guide groove 2.6 to improve the convenience of busbar installation.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A photovoltaic junction box with rapid heat dissipation, comprising a box body (1) and a cover plate (2) disposed on the box body (1), wherein the box body (1) and the cover plate (2) form an installation space (3), characterized in that, The installation space (3) is provided with a conductive sheet group (4), which includes a first conductive sheet (1.1), a second conductive sheet (1.2), and an intermediate connecting sheet (1.3) disposed between the first conductive sheet (1.1) and the second conductive sheet (1.2). The intermediate connecting sheet (1.3) is connected to the first conductive sheet (1.1) and the second conductive sheet (1.2) respectively through a diode (5). The diode (5) includes a main body (1.4) and connecting leads (1.5) disposed at both ends of the main body (1.4). The first conductive sheet (1.1) and the second conductive sheet (1.2) are formed with positioning grooves (1.6) for the main body (1.4) to be inserted. The positioning grooves (1.6) form a heat-dissipating protrusion (1.7) that supports the bottom of the main body (1.4). The heat-dissipating protrusion (1.7) fits the outer contour of the main body (1.4).

2. The photovoltaic junction box with rapid heat dissipation according to claim 1, characterized in that: The heat-dissipating protrusion (1.7) is integrally formed with the first conductive sheet (1.1) or the second conductive sheet (1.2), and the heat-dissipating protrusion (1.7) is arc-shaped.

3. A photovoltaic junction box for rapid heat dissipation according to claim 1, characterized in that: The first conductive sheet (1.1), the second conductive sheet (1.2), and the intermediate connecting sheet (1.3) are provided with connecting grooves (1.8), and the connecting lead (1.5) is placed in the connecting grooves (1.8).

4. A photovoltaic junction box for rapid heat dissipation according to claim 1, characterized in that: The diode (5) is tilted on the first conductive plate (1.1) and the second conductive plate (1.2).

5. A photovoltaic junction box for rapid heat dissipation according to claim 1, characterized in that: The installation space (3) is provided with a positioning post (2.1), and the conductive sheet group (4) is set on the positioning post (2.1), dividing the installation space (3) into a first area (2.4) and a second area (2.5).

6. A photovoltaic junction box for rapid heat dissipation according to claim 5, characterized in that: The bottom of the box body (1) forms a glue-filling groove (2.2), and the intermediate connecting piece (1.3) has a glue-passing port (2.3) arranged opposite to the glue-filling groove (2.2). The glue-passing port (2.3) connects the first region (2.4) and the second region (2.5), and the bottom of the box body (1) forms a busbar guide groove (2.6) for connecting the conductive sheet group (4).

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