Photovoltaic energy storage and municipal power complementary power supply switching device

Abstract

The utility model relates to photovoltaic energy storage technical field, and disclose a kind of photovoltaic energy storage and municipal power complementary power supply switching device, including photovoltaic power supply system, power generation unit, energy management system and box, the inside of the box is provided with electric appliance box, battery box and heat dissipation structure, this photovoltaic energy storage and municipal power complementary power supply switching device, by setting heat dissipation structure, when needing to carry out power supply switching, energy management system makes electric appliance box and battery box all-weather work, summer weather is hot, when temperature sensing detects that temperature is higher, through single-chip microcomputer control waterproof vacuum pump, outside air is pumped into water cooling tank, through internal cold water heat exchange, so that cold air passes through battery box, and from the air outlet filter screen of electric appliance box, so that electric appliance box and battery box double cooling, this heat dissipation structure, can pass through underground half-buried electric control equipment, summer cooling through underground heat exchange, temperature is monitored at any time, conducive to equipment long time operation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic energy storage technology, specifically a photovoltaic energy storage and mains power complementary power supply switching device. Background Technology

[0002] A photovoltaic energy storage and grid complementary power supply switching device is a system that can intelligently switch between photovoltaic power generation, energy storage batteries and grid power. It prioritizes the use of clean photovoltaic energy and seamlessly switches to grid power or energy storage batteries when there is insufficient sunlight or equipment failure, ensuring the continuity and stability of power supply. With the continuous development of photovoltaic energy storage, various photovoltaic energy storage devices have emerged, such as a photovoltaic energy storage and grid complementary power supply switching device.

[0003] Currently, commercially available photovoltaic energy storage devices typically use an energy management system to control the current switching circuit at the user's location via relays. While switching to battery energy storage allows for rapid switching, the switching device requires relays and batteries. During the day, the switching current is supplied to the mains, and at night, the battery discharges to supply power to the user. The relays and batteries operate around the clock, and prolonged operation in hot weather can easily lead to damage. Therefore, a photovoltaic energy storage and mains power complementary power supply switching device is proposed, which uses semi-buried underground electrical control equipment. In summer, it can be cooled through underground heat exchange and the temperature can be monitored at all times, which is beneficial for the long-term operation of the equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a photovoltaic energy storage and mains power complementary power supply switching device. It has the advantages of being able to use underground semi-buried electrical control equipment, cooling through underground heat exchange in summer, and monitoring the temperature at all times, which is conducive to the long-term operation of the equipment. It solves the problem that current photovoltaic energy storage devices on the market need to use relays and batteries, switching current to mains power during the day and discharging to users through batteries at night. The relays and batteries work around the clock and are prone to damage during long-term operation in hot weather.

[0005] To achieve the above-mentioned goal of enabling the underground semi-buried electrical control equipment to cool down through underground heat exchange in summer, and to monitor the temperature at all times, thus facilitating the long-term operation of the equipment, this utility model provides the following technical solution: a photovoltaic energy storage and mains power complementary power supply switching device, including a photovoltaic power supply system, a power generation unit, an energy management system and a box, wherein the box is equipped with an electrical box, a battery box and a heat dissipation structure. The heat dissipation structure includes a water-cooled box, a waterproof vacuum pump, heat exchange tubes, an exhaust plate, a silicone frame, a breathable filter, a connecting port, and an exhaust filter. The water-cooled box is fixedly installed inside the box, and the waterproof vacuum pump is installed inside the water-cooled box. The outlet of the waterproof vacuum pump is fixedly connected to the heat exchange tubes, and the top of the heat exchange tubes is fixedly connected to the exhaust plate. The top of the water-cooled box is fixedly installed with a silicone frame. A breathable filter is installed on the outside of the battery box. A connecting port is opened on the side of the electrical box near the battery box, and an exhaust filter is installed on the outside of the electrical box.

[0006] Furthermore, the top of the housing is hinged with a heat-insulating cover, and a mechanical lock is installed inside the heat-insulating cover.

[0007] Furthermore, the air outlet plate has three air outlets on its exterior, which are evenly distributed on the left side of the air outlet plate.

[0008] Furthermore, the air inlet of the waterproof vacuum pump is fixedly connected to an air inlet pipe, and a dust filter is installed on the outside of the air inlet pipe. The air outlet of the waterproof vacuum pump is fixedly connected to a heat exchange tube.

[0009] Furthermore, the top of the battery box is provided with two plastic handles, which are arranged symmetrically front to back.

[0010] Furthermore, a temperature sensor is installed inside the battery box, and a microcontroller is installed inside the electrical box.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects: This photovoltaic energy storage and grid power complementary power supply switching device, through the setting of a heat dissipation structure, enables the energy management system to keep the electrical box and battery box working around the clock when power switching is required. In hot summer weather, the battery box exchanges heat with the water-cooled box at the bottom through the silicone frame. When the temperature sensor detects that the temperature is too high, the microcontroller controls the waterproof vacuum pump to draw outside air into the water-cooled box. Through internal cold water heat exchange, the cold air passes through the battery box and is discharged from the air filter of the electrical box, thus cooling both the electrical box and the battery box. This heat dissipation structure can also be used to cool the device through underground heat exchange in summer by semi-buried electrical control equipment, and the temperature can be monitored at all times, which is conducive to the long-term operation of the equipment. Attached Figure Description

[0012] Figure 1 This is a diagram of the photovoltaic power supply system of this utility model; Figure 2 This is a diagram showing the external structure of the housing of this utility model; Figure 3 This is a front sectional view of the utility box. Figure 4 This is a diagram of the external structure of the battery box used in this application.

[0013] In the diagram: 1. Photovoltaic power supply system; 2. Power generation unit; 3. Energy management system; 4. Cabinet; 5. Electrical box; 6. Battery box; 7. Heat dissipation structure; 701. Water-cooled box; 702. Waterproof vacuum pump; 703. Heat exchange tube; 704. Exhaust plate; 705. Silicone frame; 706. Breathable filter; 707. Connecting port; 708. Exhaust filter; 8. Heat insulation cover; 9. Exhaust port; 10. Inlet pipe; 11. Plastic handle; 12. Temperature sensor; 13. Microcontroller. 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] Please see Figure 1-4 A photovoltaic energy storage and mains power complementary power supply switching device in this embodiment includes a photovoltaic power supply system 1, a power generation unit 2, an energy management system 3 and a box 4. The box 4 is equipped with an electrical box 5, a battery box 6 and a heat dissipation structure 7. The heat dissipation structure 7 includes a water-cooled box 701, a waterproof vacuum pump 702, a heat exchange tube 703, an exhaust plate 704, a silicone frame 705, a breathable filter 706, a connecting port 707, and an exhaust filter 708. The water-cooled box 701 is fixedly installed inside the box 4. The waterproof vacuum pump 702 is installed inside the water-cooled box 701. The outlet of the waterproof vacuum pump 702 is fixedly connected to the heat exchange tube 703. The top of the heat exchange tube 703 is fixedly connected to the exhaust plate 704. The top of the water-cooled box 701 is fixedly installed with a silicone frame 705. The battery box 6 is provided with a breathable filter 706 on its exterior. The electrical box 5 has a connecting port 707 on the side near the battery box 6. The electrical box 5 is provided with an exhaust filter 708 on its exterior.

[0016] In this case study, the top of the enclosure 4 is hinged with a heat-insulating cover 8, which has a mechanical lock inside. The heat-insulating cover 8 is located directly on the top of the enclosure 4, effectively blocking direct sunlight and reducing the impact of external heat radiation on the internal temperature of the enclosure 4. This reduces the load on the heat dissipation system from the source. At the same time, it also serves to prevent dust and rain. The hinged connection allows the cover to be opened and closed easily, greatly facilitating the installation, inspection, maintenance, and replacement of equipment inside the enclosure 4 by staff. The separate embedded design allows for easy cooling during normal operation and easy removal for minor maintenance. The mechanical lock provides a physical security barrier, preventing unauthorized personnel from opening the enclosure 4 and avoiding misoperation, theft, or vandalism of the equipment, which is crucial for equipment installed outdoors.

[0017] In the implementation of the case, the air outlet plate 704 has three air outlets 9 on its outside. The three air outlets 9 are evenly distributed on the left side of the air outlet plate 704. The air outlet 9 of the waterproof vacuum pump 702 is fixedly connected to the heat exchange tube 703. By setting multiple three evenly distributed air outlets 9, it is ensured that the cold air coming out of the heat exchange tube 703 can be blown evenly and dispersed to the bottom or side of the battery box 6, avoiding local overheating or cooling dead zones, achieving efficient and uniform heat dissipation, and improving the overall cooling efficiency.

[0018] In the implementation of the case, the air inlet of the waterproof vacuum pump 702 is fixedly connected to the air inlet pipe 10, and the outside of the air inlet pipe 10 is equipped with a dust filter. The dust filter is the first line of defense to protect the entire heat dissipation system. It can effectively filter impurities such as dust, willow catkins, and insects in the intake air and prevent these pollutants from entering the water cooling box 701.

[0019] In the implementation of the case, the top of the battery box 6 is equipped with two plastic handles 11, which are symmetrically arranged front and back. Since the battery box 6 is usually heavy, the symmetrically arranged plastic handles 11 provide great convenience and leverage for moving and lifting the battery box 6, making the operation of installing, repairing or replacing batteries safe, labor-saving and efficient.

[0020] In the implementation of the case, a temperature sensor 12 is installed inside the battery box 6, and a microcontroller 13 is installed inside the electrical box 5 to realize intelligent temperature control and automation. The temperature sensor 12 monitors the temperature inside the battery box 6 in real time and accurately, providing the most direct data input to the control system. The microcontroller 13, as the local control core, receives the temperature signal and compares it with the preset temperature threshold. When the temperature is too high, it automatically starts the waterproof vacuum pump 702; when the temperature drops, it can automatically stop the pump.

[0021] When implementing this procedure, please follow these steps: 1) When a power supply switch is required, the energy management system 3 enables the electrical box 5 and battery box 6 to work around the clock. In the hot summer, the battery box 6 exchanges heat with the bottom water-cooled box 701 through the bottom silicone frame 705. 2) Then, when the temperature sensor 12 detects that the temperature is too high, the microcontroller 13 controls the waterproof vacuum pump 702 to draw outside air into the water-cooled box 701, and heat exchange is carried out through the internal cold water. 3) Then, allow the cold air to pass through the battery box 6 and be discharged from the air outlet filter 708 of the electrical box 5; 4) Finally, the electrical box 5 and the battery box 6 both cooled down.

[0022] In summary, this photovoltaic energy storage and grid power complementary power supply switching device, through the setting of heat dissipation structure 7, enables the energy management system 3 to ensure that the electrical box 5 and battery box 6 operate around the clock when power switching is required. In hot summer weather, the battery box 6 exchanges heat with the bottom water-cooled box 701 through the silicone frame 705 at the bottom. When the temperature sensor 12 detects that the temperature is too high, the microcontroller 13 controls the waterproof vacuum pump 702 to draw outside air into the water-cooled box 701. Through internal cold water heat exchange, the cold air passes through the battery box 6 and is discharged from the air filter 708 of the electrical box 5, thus cooling both the electrical box 5 and the battery box 6. This heat dissipation structure 7 can cool down the device through underground heat exchange in summer by semi-buried underground electrical control equipment, and monitor the temperature at all times, which is beneficial for the long-term operation of the equipment.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic energy storage and grid power complementary power supply switching device, comprising a photovoltaic power supply system (1), a power generation unit (2), an energy management system (3), and a housing (4), characterized in that: The interior of the housing (4) is provided with an electrical box (5), a battery box (6) and a heat dissipation structure (7). The heat dissipation structure (7) includes a water-cooled box (701), a waterproof vacuum pump (702), a heat exchange tube (703), an air outlet plate (704), a silicone frame (705), a breathable filter (706), a connecting port (707), and an air outlet filter (708). The water-cooled box (701) is fixedly installed inside the box body (4). The water-cooled box (701) is equipped with a waterproof vacuum pump (702). The outlet of the waterproof vacuum pump (702) is fixedly connected to the heat exchange tube (703). The top of the heat exchange tube (703) is fixedly connected to the air outlet plate (704). The top of the water-cooled box (701) is fixedly installed with a silicone frame (705). The battery box (6) is equipped with a breathable filter (706). The electrical box (5) has a connecting port (707) on the side near the battery box (6). The electrical box (5) is equipped with an air outlet filter (708).

2. The photovoltaic energy storage and mains power complementary power supply switching device according to claim 1, characterized in that: The top of the box (4) is hinged with a heat insulation cover (8), and the inside of the heat insulation cover (8) is equipped with a mechanical lock.

3. The photovoltaic energy storage and mains power complementary power supply switching device according to claim 1, characterized in that: The air outlet plate (704) has an air outlet (9) on its outside. There are three air outlets (9), and the three air outlets (9) are evenly distributed on the left side of the air outlet plate (704).

4. The photovoltaic energy storage and mains power complementary power supply switching device according to claim 3, characterized in that: The air inlet of the waterproof vacuum pump (702) is fixedly connected to an air inlet pipe (10), and a dust filter is provided on the outside of the air inlet pipe (10). The air outlet (9) of the waterproof vacuum pump (702) is fixedly connected to a heat exchange tube (703).

5. The photovoltaic energy storage and mains power complementary power supply switching device according to claim 1, characterized in that: The top of the battery box (6) is provided with two plastic handles (11), which are arranged symmetrically in front and behind.

6. The photovoltaic energy storage and mains power complementary power supply switching device according to claim 1, characterized in that: The battery box (6) is equipped with a temperature sensor (12), and the electrical box (5) is equipped with a microcontroller (13).

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