Junction box for photovoltaic micro-grid
By introducing an active heat dissipation and filtration mechanism into the junction box for photovoltaic microgrids, the dust is intercepted by the airflow of the suction fan and the filter can be easily replaced, which solves the problem of dust accumulation affecting heat dissipation, realizes convenient cleaning during operation, and improves the adaptability of use.
Patent Information
- Application Number
- CN202423274693.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-30
AI Technical Summary
When active cooling is used in the junction boxes of existing photovoltaic microgrids, dust easily accumulates on the filter screen. Traditional disassembly and cleaning operations require stopping the cooling mechanism, which affects the use.
Design a junction box for photovoltaic microgrids, including an active heat dissipation mechanism and a filtration mechanism. The airflow generated by the suction fan is used to filter dust, and the iron filter is easily replaced by magnetic connection, thus achieving dust cleaning.
The filter can be easily replaced while the suction fan is running, maintaining heat dissipation and improving usability and ease of operation.
Smart Images
Figure CN223798196U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic junction box technology, and in particular to a junction box for photovoltaic microgrids. Background Technology
[0002] A junction box for a photovoltaic microgrid is a device used to connect and protect solar photovoltaic modules. Its main function is to safely lead out the direct current generated by the solar panels and connect it to the microgrid system.
[0003] Currently, when using power grid junction boxes, active cooling is achieved through fans to ensure good heat dissipation. During use, a lot of dust tends to accumulate on the filter screen, requiring disassembly. In traditional methods, the internal active cooling mechanism needs to be stopped during disassembly and cleaning to prevent dust from being sucked into the box, which would affect its normal use. Therefore, how to solve this problem needs to be considered. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a junction box for photovoltaic microgrids. In practical use, this junction box can perform active heat dissipation while also allowing for the disassembly and cleaning of the filter screen, thus improving its adaptability to practical use.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A junction box for a photovoltaic microgrid includes a junction box body with a cover installed at the upper end of the junction box body; an active heat dissipation mechanism including a slide groove on the left side of the junction box body, an installation port communicating with the junction box body on the right inner wall of the slide groove, and an intake fan installed inside the installation port; and a filtration mechanism for intercepting dust.
[0007] Preferably, the airflow generated by the suction fan after it is started is from left to right.
[0008] Preferably, the filtration mechanism includes a magnetic movable plate slidably connected in a chute. Two rectangular openings are symmetrically opened on the left side of the magnetic movable plate. Ventilation openings are provided on the inner walls of the two rectangular openings, and iron filter screens are magnetically connected to the two rectangular openings.
[0009] Preferably, a pull bar is fixedly connected to the left side of each of the two iron filter screens.
[0010] Preferably, iron strips are fixedly connected to the inner wall of the front side of the chute.
[0011] Preferably, a guide groove is provided at the inner top of the chute, and a guide strip is fixedly connected to the upper end of the magnetic moving plate. The upper end of the guide strip extends into the guide groove and is slidably connected to the inner wall of the guide groove.
[0012] Compared with the prior art, the advantages of this utility model are as follows:
[0013] With two iron filters, the replacement of the two iron filters is relatively simple. This method allows for cleaning of the filters with adhering dust while the suction fan is running, which is convenient for practical use. In addition, the operation of replacing the iron filters is convenient because it is easy to align them with the installation port, without requiring the user to carefully observe and align them. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of a junction box for a photovoltaic microgrid proposed in this utility model;
[0015] Figure 2 for Figure 1 A schematic diagram of the left-side structure;
[0016] Figure 3 for Figure 1 A schematic diagram showing the filter screen after separation;
[0017] Figure 4 for Figure 3 The diagram shows the structure viewed from below.
[0018] In the diagram: 1 Junction box body, 2 Cover, 3 Slide groove, 4 Magnetic moving plate, 5 Iron filter screen, 6 Pull strip, 7 Iron strip, 8 Mounting port, 9 Suction fan, 10 Rectangular opening, 11 Ventilation opening, 12 Guide strip, 13 Guide groove. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] Reference Figures 1-4 A junction box for a photovoltaic microgrid includes a junction box body 1, and a cover 2 is installed on the upper end of the junction box body 1.
[0021] It also includes an active heat dissipation mechanism, which includes a slide groove 3 on the left side of the junction box body 1. The inner wall of the right side of the slide groove 3 has an installation port 8 that communicates with the junction box body 1. An exhaust fan 9 is installed inside the installation port 8. The airflow generated by the exhaust fan 9 after it is started is from left to right. Furthermore, multiple exhaust ports are provided on the right side wall of the junction box body 1 to ensure that the entire interior can be exhausted from there, achieving unidirectional airflow.
[0022] It also includes a filter mechanism for intercepting dust. The filter mechanism includes a magnetic moving plate 4 that is slidably connected in the slide 3. Two rectangular openings 10 are symmetrically opened on the left side of the magnetic moving plate 4. Ventilation openings 11 are opened on the inner walls of the two rectangular openings 10. Iron filter screens 5 are magnetically connected to the two rectangular openings 10. Pull strips 6 are fixedly connected to the left side of the two iron filter screens 5. Iron strips 7 are fixedly connected to the front inner wall of the slide 3.
[0023] The inner top of the slide groove 3 is provided with a guide groove 13, and the upper end of the magnetic moving plate 4 is fixedly connected with a guide strip 12. The upper end of the guide strip 12 extends into the guide groove 13 and is slidably connected to the inner wall of the guide groove 13.
[0024] In this invention, during actual use, the airflow from left to right is generated by activating the suction fan 9, thereby achieving active heat dissipation. The front iron filter 5 intercepts external dust, preventing it from entering the junction box 1. When a lot of dust adheres to the front iron filter 5, pulling the front pull bar 6 forward moves the entire magnetic moving plate 4 forward until it contacts the front iron bar 7, completing the magnetic connection. At this point, the front iron filter 5 is connected to the air duct. By pulling the front pull bar 6 to the left, the front iron filter 5 can be removed for cleaning. After cleaning, it can be reinstalled. Cleaning the rear iron filter 5 is done in a similar manner, which facilitates practical use.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A junction box for a photovoltaic microgrid, characterized in that, include: Junction box body (1), with a cover (2) installed on the upper end of the junction box body (1); An active heat dissipation mechanism includes a slide groove (3) on the left side of the junction box body (1), and an installation port (8) communicating with the junction box body (1) is provided on the inner wall of the right side of the slide groove (3). A suction fan (9) is installed inside the installation port (8). A filtration mechanism for intercepting dust.
2. The junction box for a photovoltaic microgrid according to claim 1, characterized in that, The airflow generated after the suction fan (9) is started is from left to right.
3. A junction box for a photovoltaic microgrid according to claim 1, characterized in that, The filtration mechanism includes a magnetic moving plate (4) that is slidably connected in the slide groove (3). Two rectangular openings (10) are symmetrically opened on the left side of the magnetic moving plate (4). Ventilation openings (11) are opened on the inner walls of the two rectangular openings (10). Iron filter screens (5) are magnetically connected to the two rectangular openings (10).
4. A junction box for a photovoltaic microgrid according to claim 3, characterized in that, Pull strips (6) are fixedly connected to the left side of both of the iron filter screens (5).
5. A junction box for a photovoltaic microgrid according to claim 3, characterized in that, Iron strips (7) are fixedly connected to the inner wall of the front side of the slide (3).
6. A junction box for a photovoltaic microgrid according to claim 3, characterized in that, The inner top of the slide groove (3) is provided with a guide groove (13), and the upper end of the magnetic moving plate (4) is fixedly connected with a guide strip (12). The upper end of the guide strip (12) extends into the guide groove (13) and is slidably connected to the inner wall of the guide groove (13).