Solar powered luminaire

Abstract

This utility model discloses a solar-powered lamp, including a PCB board, a control management module, a battery management module, and an optocoupler isolation module. Multiple sets of LED beads are integrated at the top of the PCB board. The control management module and the battery management module are also integrated at the top of the PCB board, with their communication terminals coupled to the control management module. The optocoupler isolation module is also integrated at the top of the PCB board, with its communication terminal coupled to the telecommunication input terminal of the control management module. This utility model utilizes the optocoupler isolation module and its photoelectric transmission characteristics to transmit voltage changes from the photovoltaic panel to the microcontroller. The voltage changes are used to determine whether it is day or night. This avoids the inconsistency between the photovoltaic panel's ground wire and the battery's ground wire under high current conditions, thus preventing interference and misjudgment. This floating ground technology ensures a stable power supply to the microcontroller from the photovoltaic panel and battery.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and particularly to solar-powered lighting fixtures. Background Technology

[0002] With the widespread application of renewable energy, solar lighting, as a green and environmentally friendly lighting device, has received increasing attention and use. Solar lighting consists of solar panels, rechargeable batteries, LED light sources, and control circuits. Its working principle is that the solar panels convert sunlight into electrical energy during the day, which is stored in the batteries. At night, the stored electrical energy is converted into light energy by the LED light source to provide illumination.

[0003] However, existing solar lights rely on photoresistors or photoelectric sensors to determine changes in ambient light to control battery charging and discharging when distinguishing between day and night. However, these sensors are prone to misjudgment under conditions of significant light variation or complex environments, leading to ineffective battery charging during the day or inadequate discharging at night, thus affecting the normal operation and use of the lights. Furthermore, under high current conditions, the potential difference between the photovoltaic panel's ground wire and the battery's ground wire can cause interference, further exacerbating misjudgments. Therefore, this solution proposes a solar light fixture to address these problems. Utility Model Content

[0004] The purpose of this invention is to provide a solar-powered lamp to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a solar-powered lamp, comprising:

[0006] A PCB board, the top of which integrates multiple sets of LED beads;

[0007] A control management module, integrated on the top of the PCB board, is used for charge and discharge control.

[0008] A battery management module is integrated on the top of a PCB board, and the communication terminal of the battery management module is coupled to the communication terminal of the control management module. The battery management module is used for battery charging and discharging management.

[0009] An optical isolation module is integrated on the top of a PCB board, and the communication end of the optical isolation module is coupled to the telecommunications input end of the control and management module. The optical isolation module is used to identify whether it is day or night.

[0010] Preferably, the top edge of the PCB board is provided with a battery negative terminal solder pad, a solar panel negative terminal solder pad, a solar panel positive terminal solder pad, and a battery positive terminal solder pad. The battery positive terminal solder pad and the solar panel positive terminal solder pad are used for electrical connection between the control management module and the external solar panel, respectively. The battery negative terminal solder pad is used for electrical connection between the battery management module and the external battery. The solar panel negative terminal solder pad is used for electrical connection between the optocoupler isolation module and the control management module.

[0011] Preferably, the control management module includes a microcontroller, a photovoltaic panel charging control circuit, and an LED light source control circuit;

[0012] The control terminal of the photovoltaic panel charging control circuit is electrically connected to the output terminal of the microcontroller, the input terminal of the photovoltaic panel charging control circuit is electrically connected to the solar panel solder pad, and the output terminal of the photovoltaic panel charging control circuit is electrically connected to the input terminal of the battery management module.

[0013] The control terminal of the LED light source control circuit is electrically connected to the output terminal of the microcontroller, and the output terminal of the LED light source control circuit is electrically connected to multiple groups of LED beads.

[0014] The receiver of the microcontroller is electrically connected to the optocoupler isolation module.

[0015] Preferably, the control terminal of the microcontroller is electrically connected to an infrared receiving circuit and a power supply regulator circuit, wherein the power supply regulator circuit is used to stabilize the power supply voltage of the infrared receiving circuit and the microcontroller.

[0016] Preferably, the optocoupler isolation module includes a photovoltaic panel isolation detection circuit, the input terminal of which is electrically connected to the photovoltaic panel, and the output terminal of which is electrically connected to the receiving terminal of the microcontroller.

[0017] Preferably, the battery management module includes:

[0018] A battery voltage detection circuit, wherein the communication terminal of the battery voltage detection circuit is electrically connected to the control terminal of the microcontroller, and the output terminal of the battery voltage detection circuit is used to electrically connect to the battery;

[0019] A battery charging indicator circuit, wherein the control terminal of the battery charging indicator circuit is electrically connected to the output terminal of the microcontroller.

[0020] The technical effects and advantages of this utility model are as follows:

[0021] This invention utilizes the photoelectric transmission characteristics of an optocoupler isolation module to transmit voltage changes from the photovoltaic panel to a microcontroller. By analyzing these voltage changes, it determines whether it is day or night. This avoids the inconsistency between the ground wire of the photovoltaic panel and the battery ground wire under high current conditions, thus preventing interference and misjudgment. By employing floating ground technology, it ensures a stable power supply to the microcontroller from both the photovoltaic panel and the battery. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure and connection of this utility model.

[0023] Figure 2 This is a circuit connection diagram for the control management module, battery management module, and optocoupler isolation module.

[0024] Figure 3 This is a flowchart of the charging and discharging control process of this utility model.

[0025] In the diagram: 1. PCB board; 101. Battery positive terminal solder pad; 102. Battery negative terminal solder pad; 103. Solar panel positive terminal solder pad; 104. Solar panel negative terminal solder pad; 2. Microcontroller; 3. Photovoltaic panel isolation detection circuit; 4. Power supply voltage regulator circuit; 5. Infrared receiving circuit; 6. Battery voltage detection circuit; 7. Battery charging indicator circuit; 8. Photovoltaic panel charging control circuit; 9. LED light source control circuit; 10. LED beads. Detailed Implementation

[0026] 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.

[0027] This utility model provides, for example Figure 1 and Figure 2 The solar-powered lighting fixtures shown include:

[0028] PCB board 1 has multiple LED beads 10 integrated on its top. The top side of PCB board 1 is provided with battery negative terminal solder pad 102, solar panel negative terminal solder pad 104, solar panel positive terminal solder pad 103 and battery positive terminal solder pad 101. Battery positive terminal solder pad 101 and solar panel positive terminal solder pad 103 are used to electrically connect the control management module and the external solar panel, respectively. Battery negative terminal solder pad 102 is used to electrically connect the battery management module and the external battery. Solar panel negative terminal solder pad 104 is used to electrically connect the optocoupler isolation module and the control management module. Solar panel negative terminal solder pad 104 is connected to the control MOS transistor of the control management module for controlling the charging of the photovoltaic panel, so as to realize the control of the solar panel to charge the external battery after receiving the charging signal.

[0029] The control and management module is integrated at the top of the PCB board 1. The control and management module is used for charging and discharging control. The positive terminal of the solar panel is connected to the solder pad 101 for electrical connection between the control and management module and the external solar panel.

[0030] Specifically, the control and management module includes a microcontroller 2, a photovoltaic panel charging control circuit 8, and an LED light source control circuit 9;

[0031] The control terminal of the photovoltaic panel charging control circuit 8 is electrically connected to the output terminal of the microcontroller 2, and the input terminal of the photovoltaic panel charging control circuit 8 is electrically connected to the negative terminal of the solar panel solder pad 104. The photovoltaic panel charging control circuit 8 is used to control the external photovoltaic panel to charge the entire lamp.

[0032] The control terminal of the LED light source control circuit 9 is electrically connected to the output terminal of the microcontroller 2. The output terminal of the LED light source control circuit 9 is electrically connected to multiple sets of LED beads 10. After receiving the discharge command from the microcontroller 2, the LED light source control circuit 9 controls the LED beads 10 to discharge and emit light.

[0033] The receiver of the microcontroller 2 is electrically connected to the optocoupler isolation module.

[0034] Furthermore, the control terminal of the microcontroller 2 is electrically connected to the infrared receiving circuit 5 and the power supply regulator circuit 4. The power supply regulator circuit 4 is used to stabilize the power supply voltage of the infrared receiving circuit 5 and the microcontroller 2.

[0035] It should be noted that the power supply regulator circuit 4 is used to ensure that the infrared receiving circuit 5 and the microcontroller 2 obtain a stable power supply voltage during operation. This can avoid incorrect data reception or abnormal operation of the microcontroller 2 due to voltage fluctuations. The infrared receiving circuit 5 is responsible for receiving infrared signals emitted from the remote control or other infrared transmitting devices. The infrared receiving circuit 5 converts these signals into electrical signals and sends them to the microcontroller 2 for processing. The microcontroller 2 parses the signals received from the infrared receiving circuit 5, decodes the signal content according to a specific protocol (NEC, RC5), and then executes corresponding control operations according to the received commands, including turning lights on and off, adjusting brightness, and controlling other peripherals.

[0036] The optocoupler isolation module is integrated on the top of the PCB board 1, and the communication end of the optocoupler isolation module is coupled to the telecommunications input end of the control and management module. The optocoupler isolation module is used to identify day or night.

[0037] Specifically, the optocoupler isolation module includes a photovoltaic panel isolation detection circuit 3, and the output terminal of the photovoltaic panel isolation detection circuit 3 is electrically connected to the receiving terminal of the microcontroller 2.

[0038] It should be noted that by setting up the photovoltaic panel isolation detection circuit 3, the photoelectric transmission characteristics of the optocoupler are used to transmit the voltage change of the photovoltaic panel to the microcontroller 2 side. The voltage change is used to determine whether it is day or night. This can avoid the difference between the bottom line of the photovoltaic panel and the battery ground line under the stage in the high current state, thereby avoiding interference that could lead to misjudgment. Therefore, the floating ground technology is used to keep the photovoltaic panel and battery in a stable state when supplying power to the microcontroller 2.

[0039] Floating ground refers to a circuit where a reference point (usually ground) is not connected to the power supply or system ground wire, but rather kept at a relatively uncertain potential to reduce the impact of ground loop current on the system. In photovoltaic systems, the positive terminal of the photovoltaic panel is directly connected to the positive terminal of the battery, while the negative terminal is floated in an ungrounded state. This connection method can avoid the influence of ground interference and noise on the signal, ensuring the stability of the power supply. In floating ground design, it is essential to ensure that the PCB board is insulated to prevent local short circuits or interference caused by potential differences.

[0040] The battery management module is integrated on the top of the PCB board 1, and the communication terminal of the battery management module is coupled to the communication terminal of the control management module. The battery management module is used for battery charging and discharging management. The battery connection pad 102 is used to electrically connect the battery management module and the external battery. The output terminal of the photovoltaic panel charging control circuit 8 is electrically connected to the input terminal of the battery management module.

[0041] Specifically, the battery management module includes:

[0042] The battery voltage detection circuit 6 has its communication terminal electrically connected to the control terminal of the microcontroller 2, and its output terminal is used to electrically connect to the battery.

[0043] The battery charging indicator circuit 7 is electrically connected to the output terminal of the microcontroller 2.

[0044] It should be noted that after the battery voltage detection circuit 6 is connected to the microcontroller 2, it monitors the battery voltage level in real time. The microcontroller 2 uses this data to determine the battery's charging status and remaining power. By monitoring the battery voltage, the microcontroller 2 controls the charging process. At the same time, based on the battery voltage status, the microcontroller 2 decides whether to turn the load (LED beads 10) on or off.

[0045] refer to Figure 3 As shown, when the solar lamp is in charge and discharge control operation, the photovoltaic panel is first connected to the microcontroller 2 through the photovoltaic panel isolation detection circuit 3. The photovoltaic panel isolation detection circuit 3 detects the voltage change of the photovoltaic panel and sends the detection signal to the microcontroller 2. The microcontroller 2 determines whether it is day or night based on the voltage change.

[0046] When the microcontroller 2 determines that it is nighttime, it controls the LED light bead 10 to emit light through the LED light source control circuit 9.

[0047] When the microcontroller 2 determines that it is daytime, it controls the current generated at the photovoltaic panel through the photovoltaic panel charging control circuit 8 and stores the current in the battery.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solar-powered lamp, characterized in that, include: PCB board (1), the top of which is integrated with multiple sets of LED beads (10); A control management module is integrated on the top of the PCB board (1) and is used for charge and discharge control. A battery management module is integrated on the top of a PCB board (1), and the communication terminal of the battery management module is coupled to the communication terminal of the control management module. The battery management module is used for battery charging and discharging management. An optical isolation module is integrated on the top of a PCB board (1), and the communication end of the optical isolation module is coupled to the telecommunications input end of the control management module. The optical isolation module is used to identify day or night.

2. The solar lamp according to claim 1, characterized in that, The top side of the PCB board (1) is provided with a battery negative terminal solder pad (102), a solar panel negative terminal solder pad (104), a solar panel positive terminal solder pad (103), and a battery positive terminal solder pad (101). The battery positive terminal solder pad (101) and the solar panel positive terminal solder pad (103) are used to electrically connect the control management module and the external solar panel, respectively. The battery negative terminal solder pad (102) is used to electrically connect the battery management module and the external battery. The solar panel negative terminal solder pad (104) is used to electrically connect the optocoupler isolation module and the control management module.

3. The solar lamp according to claim 2, characterized in that, The control and management module includes a microcontroller (2), a photovoltaic panel charging control circuit (8), and an LED light source control circuit (9); The control terminal of the photovoltaic panel charging control circuit (8) is electrically connected to the output terminal of the microcontroller (2), the input terminal of the photovoltaic panel charging control circuit (8) is electrically connected to the solar panel electrical bonding pad (103), and the output terminal of the photovoltaic panel charging control circuit (8) is electrically connected to the input terminal of the battery management module. The control terminal of the LED light source control circuit (9) is electrically connected to the output terminal of the microcontroller (2), and the output terminal of the LED light source control circuit (9) is electrically connected to multiple sets of LED beads (10). The receiving end of the microcontroller (2) is electrically connected to the optocoupler isolation module.

4. The solar lamp according to claim 3, characterized in that, The control terminal of the microcontroller (2) is electrically connected to an infrared receiving circuit (5) and a power supply regulator circuit (4). The power supply regulator circuit (4) is used to stabilize the power supply voltage of the infrared receiving circuit (5) and the microcontroller (2).

5. The solar lamp according to claim 3, characterized in that, The optocoupler isolation module includes a photovoltaic panel isolation detection circuit (3), the output of which is electrically connected to the receiving end of the microcontroller (2).

6. The solar lamp according to claim 3, characterized in that, The battery management module includes: The battery voltage detection circuit (6) is electrically connected to the control terminal of the microcontroller (2) at its communication terminal and the output terminal of the battery voltage detection circuit (6) is used to electrically connect to the battery. The battery charging indicator circuit (7) is electrically connected to the output terminal of the microcontroller (2).

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