All-weather photovoltaic direct-drive LED lighting system

Abstract

The application provides an all-weather photovoltaic direct-drive LED lighting system, characterized in that it comprises a solar radiation sensor, a photovoltaic assembly, an MPPT controller, an energy storage assembly, a DC-DC constant-current power supply, an LED lamp, an indoor illuminance sensor and an Internet of Things control center; the photovoltaic assembly is connected with the energy storage assembly through the MPPT controller; the energy storage assembly is connected with the LED lamp through the DC-DC constant-current power supply; the Internet of Things control center is connected with the solar radiation sensor and the indoor illuminance sensor, and the Internet of Things control center simultaneously controls the on-off of the energy storage assembly and the input end of the DC-DC constant-current power supply. The energy storage assembly is connected with an AC-DC charger, and the AC-DC charger is connected with a power grid. The scheme utilizes the Internet of Things control center to perform data statistics and analysis, realizes an energy-saving mode of photovoltaic power generation, energy storage and power grid complementation, and is helpful to further improve the energy-saving effect.

Description

Technical Field

[0001] This utility model belongs to the field of energy-saving and environmental protection technology, and in particular relates to an all-weather photovoltaic direct-drive LED lighting system. Background Technology

[0002] The photovoltaic industry and technology have developed rapidly over the past decade. However, their application in the energy-intensive building sector has lagged behind, especially in indoor lighting. This is because current building electrical equipment uses alternating current (AC), while photovoltaic power stations generate direct current (DC). For the electricity from photovoltaic power stations to be used in the grid, it must be converted from DC to AC by an inverter, a process that results in a 20%-10% loss. The core component of LED lighting, which is used most frequently in buildings, is powered by low-voltage DC. Therefore, the driver power supply for traditional LED lighting fixtures must convert AC to 24-180V DC, a process that results in a 5%-10% loss of electrical energy.

[0003] Currently, the application of 24V-48V DC LED lights and drivers is mature in scenarios such as the wild, buses, ships, and shop display cases. However, the number of lights inside buildings is huge and scattered, making it difficult to modify the existing AC lines. Furthermore, it is not possible to comprehensively monitor historical statistical data such as sunlight conditions, real-time indoor lighting data, photovoltaic power generation, and lighting power consumption to analyze the control and energy supply strategies of the lighting system. Therefore, even if energy-saving LED lights are used in existing buildings, they are generally converted from DC to AC by photovoltaic power generation and then supplied to LED lights through AC-DC conversion. There is energy loss in the process, and the energy-saving effect is limited. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an all-weather photovoltaic direct-drive LED lighting system. It utilizes an Internet of Things control center for data statistics and analysis to achieve an energy-saving mode that integrates photovoltaic power generation, energy storage, and grid complementarity, thereby helping to further improve energy-saving performance.

[0005] In order to achieve the purpose of this utility model, the following solution is proposed: An all-weather photovoltaic direct-drive LED lighting system, characterized in that it includes: a solar irradiance sensor, a photovoltaic module, an MPPT controller, an energy storage module, a DC-DC constant current power supply, LED lamps, an indoor illuminance sensor, and an Internet of Things control center; The photovoltaic modules are connected to the energy storage modules via an MPPT controller; The energy storage components are connected to the LED lights via a DC-DC constant current power supply; The IoT control center is connected to the solar irradiance sensor and the indoor illuminance sensor. The IoT control center also controls the on / off state of the energy storage components and the DC-DC constant current power supply input.

[0006] The energy storage unit is connected to an AC-DC charger, which is connected to the power grid.

[0007] The beneficial effects of this utility model are as follows: 1. The solution is equipped with solar irradiance sensors and indoor illuminance sensors, and uses an IoT control center for data statistics and analysis to accurately control the energy storage of the energy storage components, effectively achieving low energy consumption around the clock. 2. The solution also takes into account factors such as solar irradiance and weather to select more effective and cost-effective energy storage methods, and realizes an energy-saving mode that complements photovoltaic power generation, energy storage and grid, which helps to further improve energy-saving effect. It can save more than 50% energy compared with conventional AC LED lighting systems, and can meet the low-carbon requirements at any time of year, and can make full use of natural energy. 3. The DC power from photovoltaic and energy storage systems can be directly supplied to high-efficiency LED lights, improving the energy efficiency of photovoltaic and energy storage systems by more than 10%. Attached Figure Description

[0008] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0009] Figure 1 A schematic diagram of the lighting system of this application is shown. Detailed Implementation

[0010] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0011] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0012] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, and are only for the convenience of describing this utility model and simplifying the description. The terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "parallel," "vertical," etc., do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly tilted.

[0013] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0014] like Figure 1 As shown, an all-weather photovoltaic direct-drive LED lighting system includes: a solar irradiance sensor, a photovoltaic module, an MPPT controller, an energy storage module, a DC-DC constant current power supply, LED lamps, an indoor illuminance sensor, and an Internet of Things control center; The photovoltaic modules are connected to the energy storage modules via an MPPT controller; The energy storage components are connected to the LED lights via a DC-DC constant current power supply; The IoT control center is connected to the solar irradiance sensor and the indoor illuminance sensor. The IoT control center also controls the on / off state of the energy storage components and the DC-DC constant current power supply input.

[0015] Specifically, the solar irradiance sensor includes a 485 communication interface module, a solar diffuse radiation monitoring module, and a direct solar radiation monitoring module. The indoor illuminance sensor includes a 485 communication interface module and an illuminance monitoring module.

[0016] The solution utilizes energy storage components to power LED lights. The IoT control center monitors the illuminance in various parts of the room based on indoor illuminance sensors. When the illuminance in the monitored area is low, the IoT control center can automatically increase the number of LED lights in that area. At the same time, the IoT control center controls the on and off of the LED lights by controlling the switching on and off of the DC-DC constant current power input.

[0017] The IoT control center collects solar radiation in real time through solar irradiance sensors, monitors the power generation status of photovoltaic modules in real time through MPPT controllers, including information such as voltage and current, collects indoor illuminance through indoor illuminance sensors, and collects the number of LED lights turned on. The IoT control center also collects the storage capacity of energy storage modules and the actual power consumption. Through long-term collection and statistics and analysis using AI, the above data can accurately determine the building's power demand in the future period, so as to make good energy reserves.

[0018] Solar irradiance sensors can predict the power generation of photovoltaic modules. When solar radiation is sufficient, the photovoltaic modules can be used to charge the energy storage modules, thus making advance energy reserves. Through continuous learning and optimization strategies, the system can achieve the lowest energy consumption and carbon emissions at any time of year while meeting lighting needs.

[0019] As a preferred option, the IoT control center is connected to the meteorological system. The meteorological system can predict future weather conditions in advance. When the meteorological system predicts that the weather will be cloudy or rainy or that there will be insufficient solar radiation, the energy storage components can be charged in advance by the mains power during the off-peak electricity price period to prepare for energy reserves. The aforementioned meteorological system includes, but is not limited to, local weather forecasts.

[0020] Preferred, such as Figure 1 As shown, the energy storage module is connected to an AC-DC charger, which is connected to the power grid. Specifically, the input terminal of the energy storage module is connected to the output terminal of the AC-DC charger, and the input terminal of the AC-DC charger is connected to the power grid. When the photovoltaic modules are insufficient to supplement the energy storage module's power, the grid can be used to supplement the energy storage module during periods of low electricity prices to ensure the building's year-round, 24 / 7 lighting needs. This solution ensures the building's lighting system can still operate normally even without a power outage.

[0021] Further preferred, such as Figure 1 As shown, the AC-DC charger is connected to the power grid via an AC switch, which is connected to an IoT control center. The IoT control center automatically controls the opening and closing of the AC switch, thereby controlling the charging status of the energy storage components by the power grid. Specifically, the AC switch is a 485 communication smart AC switch, which includes a voltage monitoring module, a 485 communication interface module, a current monitoring module, and a real-time power monitoring module.

[0022] Preferred, such as Figure 1 As shown, DC switches are installed between the photovoltaic module and the MPPT controller, and between the energy storage module and the DC-DC constant current power supply. These DC switches are connected to an IoT control center, which automatically controls their opening and closing. When the solar irradiance sensor detects solar irradiance, the IoT control center opens the DC switch between the photovoltaic module and the MPPT controller. When there is no solar irradiance or the irradiance is below a set threshold, the IoT control center closes the DC switch. By controlling the DC switch between the energy storage module and the DC-DC constant current power supply, the IoT control center can control the switching of LED lights. Specifically, all DC switches are 485 communication smart DC switches, including a voltage monitoring module, a 485 communication interface module, a current monitoring module, and a real-time power monitoring module.

[0023] Preferably, the IoT control center is designed with a programmable structure, which includes a 24V DC power supply, a 485 communication interface module, a network communication interface module, a CAN communication interface module, and a network communication interface module.

[0024] Preferably, the IoT control center is connected to the building’s internal monitoring system. The monitoring system can use a 485 communication infrared human body sensor structure to record the entry and exit of people in the building in real time. Based on the real-time distribution of people in the room, it can intelligently determine the number of lighting fixtures to be turned on and the brightness, so as to ensure that the lighting intensity in unoccupied areas is reduced to the minimum and the overall energy consumption of lighting is reduced to the greatest extent.

[0025] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. An all-weather photovoltaic direct-drive LED lighting system, characterized in that, include: Solar irradiance sensors, photovoltaic modules, MPPT controllers, energy storage components, DC-DC constant current power supplies, LED lighting fixtures, indoor illuminance sensors, and IoT control centers; The photovoltaic modules are connected to the energy storage modules via an MPPT controller; The energy storage components are connected to the LED lights via a DC-DC constant current power supply; The IoT control center is connected to the solar irradiance sensor and the indoor illuminance sensor. The IoT control center also controls the on / off state of the energy storage components and the DC-DC constant current power supply input.

2. The all-weather photovoltaic direct-drive LED lighting system according to claim 1, characterized in that, The Internet of Things (IoT) control center is connected to the meteorological system.

3. The all-weather photovoltaic direct-drive LED lighting system according to claim 1, characterized in that, The energy storage unit is connected to an AC-DC charger, which is connected to the power grid.

4. The all-weather photovoltaic direct-drive LED lighting system according to claim 3, characterized in that, The AC-DC charger is connected to the power grid via an AC switch, which in turn is connected to the IoT control center.

5. The all-weather photovoltaic direct-drive LED lighting system according to claim 1, characterized in that, DC switches are installed between the photovoltaic modules and the MPPT controller, as well as between the energy storage modules and the DC-DC constant current power supply. All DC switches are connected to the Internet of Things control center.

6. The all-weather photovoltaic direct-drive LED lighting system according to claim 1, characterized in that, The IoT control center is designed with a programmable architecture and includes a 24V DC power supply, a 485 communication interface module, a network communication interface module, a CAN communication interface module, and a network communication interface module.

7. The all-weather photovoltaic direct-drive LED lighting system according to claim 1, characterized in that, The solar irradiance sensor includes a 485 communication interface module, a solar diffuse radiation monitoring module, and a solar direct radiation monitoring module.

8. The all-weather photovoltaic direct-drive LED lighting system according to claim 1, characterized in that, The indoor illuminance sensor includes a 485 communication interface module and an illuminance monitoring module.

9. The all-weather photovoltaic direct-drive LED lighting system according to claim 1, characterized in that, The IoT control center is connected to the building's internal monitoring system.

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