Solar lamp control circuit capable of automatically supplementing electricity and facilitating long-term transportation and storage

Abstract

The utility model discloses a solar lamp control circuit capable of automatically supplementing electricity and facilitating long-term transportation and storage. A solar lamp comprises a solar panel, a battery, a circuit board and a light source board. The control circuit is arranged on the circuit board and comprises a main control chip U4, an induction circuit, a charging circuit, a charging detection circuit, a working circuit and a chip driving circuit. The solar panel is electrically connected with the battery through the charging circuit, the battery is connected with the main control chip U4 through the chip driving circuit and supplies power to the main control chip U4, the main control chip U4 is connected with the light source panel through the working circuit, and the induction circuit is connected with the main control chip U4. The input end of the charging detection circuit is connected with the solar panel, the output end of the charging detection circuit is connected with the main control chip U4, the main control chip U4 can obtain the output voltage of the solar panel through the charging detection circuit, and if the output voltage is zero for a long time, the solar lamp is in a transportation state, and the main control chip U4 enters a dormant state.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to a control circuit for a solar lamp that automatically replenishes power for long-term transportation and storage. Background Technology

[0002] Due to transportation costs, a large number of products in international trade are mainly transported by container shipping or rail, which takes a long time, potentially 15-90 days. For the batteries in the lamps, a prolonged state of zero charge is detrimental to battery life. Maintaining the battery charge between 20% and 80% is a better option. Therefore, there is a need for an automatic recharging control circuit that can detect the output voltage at the solar panel during transportation to determine whether the solar lamp is in transit, and then enter a sleep state to reduce power consumption during transportation, thereby protecting the battery and extending its lifespan. This is beneficial for long-term transportation and storage of solar lamps. Utility Model Content

[0003] The main purpose of this invention is to provide an automatic recharging control circuit for solar lamps that detects the output voltage at the solar panel during transportation to determine whether the solar lamp is in a transportation state, and reduces power consumption during transportation by entering a sleep state, thereby protecting the battery and extending its service life. This is beneficial for long-term transportation and storage of solar lamps.

[0004] This invention proposes an automatic power replenishment control circuit for a solar lamp that facilitates long-term transportation and storage. The solar lamp includes a solar panel, a battery, a circuit board, and a light source board.

[0005] The control circuit is mounted on the circuit board and includes a main control chip U4, a sensing circuit, a charging circuit, a charging detection circuit, a working circuit, and a chip driving circuit.

[0006] The solar panel is electrically connected to the battery through the charging circuit. The battery is connected to and powered by the main control chip U4 through the chip driving circuit. The main control chip U4 is connected to the light source board through the working circuit. The sensing circuit is connected to the main control chip U4.

[0007] The input terminal of the charging detection circuit is connected to the solar panel, and the output terminal of the charging detection circuit is connected to the main control chip U4. The main control chip U4 can obtain the output voltage of the solar panel through the charging detection circuit. If the output voltage is 0 for a long time, it means that the solar lamp is in transport mode and the main control chip U4 enters sleep mode.

[0008] Preferably, the control circuit further includes a battery detection circuit, which includes resistors R11 and R12. One end of resistor R11 is connected to the battery, and the other end of resistor R11 is grounded through resistor R12 and connected to an input / output pin of the main control chip U4. The main control chip U4 can obtain the battery's charge level through the battery detection circuit, and thus select an appropriate operating state based on the obtained charge level.

[0009] Preferably, the sensing circuit includes a radar sensing circuit, which is connected to one input / output pin of the main control chip U4. The main control chip U4 can obtain information about whether there are people or objects approaching within the sensing range through the radar sensing circuit.

[0010] Preferably, the sensing circuit further includes an infrared receiving circuit, which is connected to one input / output pin of the main control chip U4. The remote control or other external devices can connect to the main control chip U4 through the infrared receiving circuit and select a suitable working mode.

[0011] Preferably, the control circuit further includes an indicator light circuit, which is connected to one input / output pin of the main control chip U4.

[0012] Preferably, the charging detection circuit includes resistors R4 and R5. One end of resistor R4 is connected to the solar panel, and the other end of resistor R4 is grounded through resistor R5 and connected to an input / output pin of the main control chip U4. The main control chip U4 obtains the output voltage of the solar panel charging the battery through the charging detection circuit, and converts the output voltage into external light intensity, so that the charging detection circuit can function as a photoresistor.

[0013] The beneficial effects of this utility model's automatic power replenishment solar lamp control circuit on long-term transportation and storage are as follows:

[0014] 1. By setting up a charging detection circuit, the device can enter a sleep mode during long-term transportation, preventing the battery level from dropping to 0. This allows the device to be used immediately upon delivery to the user, avoiding the user's mistake for a damaged solar light and preventing returns. Additionally, it protects the battery and extends its lifespan.

[0015] 2. The main control chip U4 obtains the output voltage of the solar panel charging the battery through the charging detection circuit. The output voltage can be converted into the external light intensity, so that the charging detection circuit can be equivalent to the function of a photoresistor, thereby eliminating the need for a photoresistor and effectively reducing costs.

[0016] 3. By setting up a battery detection circuit, the solar lights can enter exhibition hall mode and maintain the battery power between 20% and 80%, maximizing the extension of battery life and improving the convenience of using solar lights in exhibition halls. Attached Figure Description

[0017] Figure 1 The circuit diagram of the main control chip U4 of the solar lamp control circuit for automatic power replenishment that facilitates long-term transportation and storage of this utility model;

[0018] Figure 2 The circuit diagram of the charging circuit for the automatic power replenishment control circuit of the solar lamp of this utility model, which is conducive to long-term transportation and storage.

[0019] Figure 3 The circuit diagram of the chip driver circuit for the automatic power replenishment control circuit of the solar lamp that facilitates long-term transportation and storage of this utility model.

[0020] Figure 4 The circuit diagram of the battery detection circuit of the solar lamp control circuit of this utility model, which is conducive to long-term transportation and storage.

[0021] Figure 5 The circuit diagram of the charging detection circuit of the control circuit for the solar lamp of this utility model, which is conducive to automatic power replenishment and long-term transportation and storage.

[0022] Figure 6 The circuit diagram of the radar sensing circuit for the automatic power replenishment control circuit of the solar lamp that facilitates long-term transportation and storage of this utility model.

[0023] Figure 7 The circuit diagram of the infrared receiving circuit of the control circuit for the solar lamp of this utility model, which is conducive to automatic power replenishment and long-term transportation and storage.

[0024] Figure 8 The circuit diagram of the indicator light circuit of the control circuit for the solar lamp of this utility model, which is conducive to automatic power replenishment and long-term transportation and storage.

[0025] Figure 9 The circuit diagram shows the working circuit of the automatic power replenishment solar lamp control circuit of this utility model, which is conducive to long-term transportation and storage.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0028] Reference Figures 1 to 9An embodiment of the automatic power replenishment control circuit for solar lamps, which is beneficial for long-term transportation and storage, is proposed:

[0029] An automatic power replenishment control circuit for solar lamps that facilitate long-term transportation and storage includes a main control chip U4, a sensing circuit, a charging circuit, a charging detection circuit, a battery detection circuit, an indicator light circuit, a working circuit, and a chip driver circuit.

[0030] The solar lamp includes a solar panel, a battery, a circuit board, and a light source board. The control circuit described in this patent is mounted on the circuit board. The solar panel is electrically connected to the battery via a charging circuit. The battery is connected to and powered by the main control chip U4 via a chip driver circuit. The main control chip U4 is connected to the light source board via a working circuit.

[0031] The battery detection circuit includes resistors R11 and R12. One end of resistor R11 is connected to the battery, and the other end of resistor R11 is grounded through resistor R12 and connected to the BAT-TEST pin of the main control chip U4. The main control chip U4 can obtain the battery's power level through the battery detection circuit and select the appropriate working state based on the obtained power level.

[0032] The sensing circuit includes a radar sensing circuit and an infrared receiving circuit. The radar sensing circuit is connected to the RD-OUT pin of the main control chip U4. The main control chip U4 can obtain information about whether there are people or objects approaching within the sensing range through the radar sensing circuit.

[0033] The infrared receiving circuit is connected to the IR-PORT pin of the main control chip U4. Remote controls or other external devices can connect to the main control chip U4 through the infrared receiving circuit and select the appropriate operating mode. In practical applications, the infrared receiving circuit can also be other wireless communication circuits, such as Bluetooth antenna circuits.

[0034] The indicator light circuit includes LEDs L1, L2, L3, L4, and L5, and resistor R15. One end of LEDs L1, L2, L3, L4, and L5 is connected to pins L1, L2, L3, L4, and L5 of the main control chip U4, respectively. The other end of LEDs L1, L2, L3, L4, and L5 is grounded through resistor R15.

[0035] The charging detection circuit includes resistors R4 and R5. One end of resistor R4 is connected to the solar panel, and the other end of resistor R4 is grounded through resistor R5 and connected to the CDS pin of the main control chip U4. The main control chip U4 obtains the output voltage of the solar panel through the charging detection circuit. The output voltage can be converted into the external light intensity, so that the charging detection circuit can be equivalent to the function of a photoresistor.

[0036] When in use, users can use the remote control to select the working state of the solar light through the infrared receiving circuit. Under normal conditions, the main control chip U4 can detect the output voltage of the solar panel through the charging detection circuit and convert the output voltage into the external light intensity. When the external light intensity is high, the radar sensing circuit will not emit light even if it detects a person. When the external light intensity is low, the radar sensing circuit will emit light when it detects a person. In this working mode, the charging detection circuit can act as a photoresistor, thereby effectively reducing costs.

[0037] If the main control chip U4 detects that the output voltage is 0 for more than 24 hours, it means that the solar light is in transport mode. The main control chip U4 enters sleep mode, which is transport mode. At this time, neither the radar sensing circuit nor the infrared receiving circuit can wake up the solar light until the main control chip U4 detects that the output voltage is not 0 and exits sleep mode.

[0038] Users can also use the remote control to select the solar light as an exhibition hall mode via the infrared receiver circuit. In the exhibition hall, the solar light cannot receive sufficient sunlight to charge. After a period of use outside, it needs to be taken outside to recharge or exposed to sunlight. When set to exhibition hall mode, the main control chip U4 obtains the battery level through the battery detection circuit. If the battery level drops below 20%, the main control chip U4 will not operate even if it receives information from the radar sensor circuit; instead, it will charge using the lights in the exhibition hall until the battery level reaches above 80%, at which point it will enter normal operating mode. This maintains the battery level between 20% and 80%, maximizing battery life and improving convenience for use in the exhibition hall.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A control circuit for an automatically rechargeable solar lamp that facilitates long-term transportation and storage, the solar lamp comprising a solar panel, a battery, a circuit board, and a light source board, characterized in that, The control circuit is mounted on the circuit board and includes a main control chip U4, a sensing circuit, a charging circuit, a charging detection circuit, a working circuit, and a chip driving circuit. The solar panel is electrically connected to the battery through the charging circuit. The battery is connected to and powered by the main control chip U4 through the chip driving circuit. The main control chip U4 is connected to the light source board through the working circuit. The sensing circuit is connected to the main control chip U4. The input terminal of the charging detection circuit is connected to the solar panel, and the output terminal of the charging detection circuit is connected to the main control chip U4. The main control chip U4 can obtain the output voltage of the solar panel through the charging detection circuit. If the output voltage is 0 for a long time, it means that the solar lamp is in transport mode and the main control chip U4 enters sleep mode.

2. The automatic power replenishment control circuit for solar lamps that facilitate long-term transportation and storage according to claim 1, characterized in that, The control circuit also includes a battery detection circuit, which includes resistors R11 and R12. One end of resistor R11 is connected to the battery, and the other end of resistor R11 is grounded through resistor R12 and connected to an input / output pin of the main control chip U4. The main control chip U4 can obtain the battery's charge level through the battery detection circuit and select an appropriate operating state based on the obtained charge level.

3. The automatic power replenishment control circuit for solar lamps that facilitate long-term transportation and storage according to claim 1, characterized in that, The sensing circuit includes a radar sensing circuit, which is connected to one input / output pin of the main control chip U4. The main control chip U4 can obtain information about whether there are people or objects approaching within the sensing range through the radar sensing circuit.

4. The automatic power replenishment control circuit for solar lamps that facilitate long-term transportation and storage according to claim 1 or 3, characterized in that, The sensing circuit also includes an infrared receiving circuit, which is connected to one input / output pin of the main control chip U4. The remote control or other external devices can connect to the main control chip U4 through the infrared receiving circuit and select a suitable working mode.

5. The automatic power replenishment control circuit for solar lamps that facilitate long-term transportation and storage according to claim 1, characterized in that, The control circuit also includes an indicator light circuit, which is connected to one input / output pin of the main control chip U4.

6. The automatic power replenishment control circuit for solar lamps that facilitate long-term transportation and storage according to claim 1, characterized in that, The charging detection circuit includes resistors R4 and R5. One end of resistor R4 is connected to the solar panel, and the other end of resistor R4 is grounded through resistor R5 and connected to an input / output pin of the main control chip U4. The main control chip U4 obtains the output voltage of the solar panel charging the battery through the charging detection circuit, and converts the output voltage into external light intensity, so that the charging detection circuit can function as a photoresistor.

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