A radio circuit that can identify battery power using LED lights

Abstract

This utility model discloses a radio circuit that can identify battery power using an LED light. It includes an audio receiving circuit, a radio integrated circuit, a speaker amplification circuit, a battery power supply circuit, and a battery power identification circuit. The battery power supply circuit includes a lithium-ion battery. The battery power identification circuit includes an LED control chip, a first resistor, and a first LED light. The input terminal of the LED control chip is electrically connected to the positive terminal of the lithium-ion battery. The output terminal of the LED control chip is connected in series with the first resistor and the first LED light and then grounded. When the lithium-ion battery power drops to a set voltage, the LED control chip controls the first LED light to flash or remain constantly lit in a set manner. This utility model effectively prevents the radio from experiencing deteriorating reception due to insufficient battery power, accurately determines the optimal charging time of the battery, and uses only one LED light to identify battery power, thus occupying little space and having low cost.

Description

Technical Field

[0001] This utility model relates to the field of radio circuit technology, and in particular to a radio circuit that can identify battery power through LED lights. Background Technology

[0002] Radios are widely used electronic devices, and with the continuous development of electronic technology, their functions have become increasingly diversified. See Patent 202411263288.1, filed by the applicant on September 10, 2004, which discloses a radio receiving circuit with isolation function, including an audio receiving circuit, a radio integrated circuit, a speaker amplifier circuit, and a battery power supply circuit. The audio receiving circuit, radio integrated circuit, and speaker amplifier circuit are electrically connected in sequence. The audio receiving circuit receives audio signals from radio stations, demodulates, amplifies, and reduces noise through the radio integrated circuit, and then amplifies and plays them through the speaker amplifier circuit. The battery power supply circuit is electrically connected to both the radio integrated circuit and the speaker amplifier circuit to supply power to them. However, a technical problem with this radio receiving circuit is that it cannot identify whether the battery level is normal. The user cannot know whether the battery level has dropped to the point where it affects the maximum sound quality of the radio, whether it has dropped to the point where the battery needs charging, or whether it has dropped to the point where the radio can no longer play. Utility Model Content

[0003] The technical problem this invention aims to solve is to provide a radio circuit that can identify battery power through an LED light, addressing the shortcomings of the aforementioned technologies. This radio circuit allows users to accurately determine whether the battery power has decreased to the point where it affects the maximum sound quality of the radio, whether it has decreased to the point where the battery needs charging, or whether it has decreased to the point where the radio cannot continue playing. This effectively prevents the radio from experiencing poor reception due to insufficient battery power and accurately determines the optimal charging time for the battery. Furthermore, this radio circuit only requires one LED light to identify battery power, thus occupying little space and having a low cost.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a radio circuit that can identify battery power through an LED light, including an audio receiving circuit, a radio integrated circuit, a speaker amplification circuit, and a battery power supply circuit; the audio receiving circuit, the radio integrated circuit, and the speaker amplification circuit are electrically connected in sequence; the audio receiving circuit receives audio signals from radio stations, demodulates, amplifies, and reduces noise through the radio integrated circuit, and then amplifies and plays them through the speaker amplification circuit; the battery power supply circuit is electrically connected to the radio integrated circuit and the speaker amplification circuit respectively to supply power to the radio integrated circuit and the speaker amplification circuit; the battery power supply circuit includes a lithium-ion battery, and the radio circuit also includes a battery power identification circuit, which includes an LED control chip, a first resistor, and a first LED light; the input terminal of the LED control chip is electrically connected to the positive terminal of the lithium-ion battery, and the output terminal of the LED control chip is connected in series with the first resistor and the first LED light and then grounded; when the power of the lithium-ion battery drops to a set voltage, the LED control chip controls the first LED light to flash or remain on in a set manner.

[0005] In the above technical solution, the lithium-ion battery is an 18650 battery, and the LED control chip is a 052F-STP8 chip. When the lithium-ion battery power drops to 3.6V, the LED control chip controls the first LED to flash slowly; when the lithium-ion battery power drops to 3.3V, the LED control chip controls the first LED to flash quickly; and when the lithium-ion battery power drops to 3.0V, the LED control chip controls the first LED to stay on.

[0006] In the above technical solution, the battery power supply circuit includes a 4056 charging chip, a USB Type-C socket, a second resistor, a second LED, and a third resistor. The 8th and 4th pins of the 4056 charging chip are connected to the voltage input pin of the USB Type-C socket via the second resistor. The voltage input pin of the USB Type-C socket is also connected to the 7th pin of the 4056 charging chip via the third resistor and the second LED. The 5th pin of the 4056 charging chip is connected to the positive terminal of the lithium-ion battery.

[0007] In the above technical solution, the battery power supply circuit includes a 6122 battery protection chip, a fourth resistor, a diode, and a capacitor. The positive terminal of the lithium-ion battery is connected to the third pin of the 6122 battery protection chip via the diode and the fourth resistor. The negative terminal of the lithium-ion battery is connected to the second pin of the 6122 battery protection chip. A capacitor is connected between the second and third pins of the 6122 battery protection chip. The fourth and fifth pins of the 6122 battery protection chip are grounded respectively.

[0008] In the above technical solution, the radio integrated circuit includes a C9616 chip, and the speaker amplifier circuit includes an 8002 chip and a speaker.

[0009] In the above technical solution, the radio circuit further includes a Bluetooth master control circuit, a boost circuit, and a switching switch. The radio integrated circuit is connected to the speaker amplifier circuit after passing through the boost circuit and the switching switch. The Bluetooth master control circuit is connected to the speaker amplifier circuit after passing through the switching switch. The switching switch is used to switch the signal source of the speaker amplifier circuit between the radio integrated circuit and the Bluetooth master control circuit. The boost circuit is used to boost the voltage to 5V. The battery power supply circuit is connected to the Bluetooth master control circuit to supply power to the Bluetooth master control circuit.

[0010] In the above technical solution, the radio circuit also includes a master switch, the input terminal of which is connected to the positive terminal of the lithium-ion battery, and the output terminal of which is electrically connected to the radio integrated circuit, the speaker amplifier circuit, the battery power identification circuit, and the Bluetooth master control circuit.

[0011] In the above technical solution, the Bluetooth master control circuit includes a 6945E Bluetooth master control chip, and the boost circuit includes a 4004 boost chip. The 6945E Bluetooth master control chip, the 4004 boost chip, the switch and the speaker amplifier circuit are connected in sequence.

[0012] In the above technical solution, the Bluetooth main control circuit includes a USB port, a Bluetooth control button, and a third LED light. The 6945E Bluetooth main control chip is electrically connected to the USB port, the Bluetooth control button, and the third LED light, respectively.

[0013] In the above technical solution, the radio circuit also includes a lighting circuit, which includes a lighting switch, a fifth resistor and a fourth LED. The input terminal of the lighting switch is connected to the positive terminal of the lithium-ion battery, and the output terminal of the lighting switch is grounded after passing through the fifth resistor and the fourth LED. Multiple sets of the fifth resistor and the fourth LED are connected in parallel.

[0014] The beneficial effects of this utility model are as follows: The battery power supply circuit of this utility model includes a lithium-ion battery, and the radio circuit also includes a battery power identification circuit. The battery power identification circuit includes an LED control chip, a first resistor, and a first LED. The input terminal of the LED control chip is electrically connected to the positive terminal of the lithium-ion battery, and the output terminal of the LED control chip is connected in series with the first resistor and the first LED and then grounded. When the power of the lithium-ion battery drops to a set voltage, the LED control chip controls the first LED to flash or stay on in a set manner. In this utility model, the standard voltage of the lithium-ion battery is 3.7V. During the use of the radio, when the power of the lithium-ion battery drops to 3.6V, it will affect the maximum working sound effect of the radio, and the first LED will flash slowly. When the power of the lithium-ion battery drops to 3.3V, it indicates that the lithium-ion battery needs to be charged, and the first LED will flash quickly. When the power of the lithium-ion battery drops to 3.0V, it indicates that the radio cannot continue to play, and the first LED will stay on. Therefore, this utility model allows users to accurately know whether the battery power has dropped to the point where it affects the maximum sound quality of the radio, whether it has dropped to the point where the battery needs to be charged, or whether it has dropped to the point where the radio can no longer play. This effectively prevents the radio from experiencing poor reception due to insufficient battery power, and it can accurately determine the optimal charging time for the battery. Furthermore, the radio circuit only uses one LED to identify the battery power, which takes up little space and has low cost. Attached Figure Description

[0015] Figure 1 This is the overall circuit diagram of the radio circuit of this utility model.

[0016] Figure 2 Circuit diagram for battery power supply circuit, lighting circuit and main switch.

[0017] Figure 3 This is a circuit diagram of the speaker amplifier circuit, battery power identification circuit, and switch.

[0018] Figure 4 This is a circuit diagram of an audio receiving circuit and a radio integrated circuit.

[0019] Figure 5 This is a circuit diagram of the Bluetooth main control circuit and the boost circuit. Detailed Implementation

[0020] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1As shown, this utility model is a radio circuit that can identify battery power through an LED light, including an audio receiving circuit 1, a radio integrated circuit 2, a speaker amplification circuit 3, and a battery power supply circuit 4. The audio receiving circuit 1, the radio integrated circuit 2, and the speaker amplification circuit 3 are electrically connected in sequence. The audio receiving circuit 1 receives audio signals from radio stations, which are then demodulated, amplified, and noise-reduced by the radio integrated circuit 2 before being amplified and played back by the speaker amplification circuit 3. The battery power supply circuit 4 is electrically connected to both the radio integrated circuit 2 and the speaker amplification circuit 3 to supply power to them. Figure 1 and Figure 2 As shown, the battery power supply circuit 4 includes a lithium-ion battery UM2; as Figure 1 and Figure 3 As shown, the radio circuit also includes a battery power identification circuit 5. The battery power identification circuit 5 includes an LED control chip U3, a first resistor R54, and a first LED D2. The input terminal of the LED control chip U3 is electrically connected to the positive terminal of the lithium-ion battery UM2. The output terminal of the LED control chip U3 is connected in series with the first resistor R54 and the first LED D2 and then grounded. When the power of the lithium-ion battery UM2 drops to a set voltage, the LED control chip U3 controls the first LED D2 to flash or remain constantly lit in a set manner. In this invention, the standard voltage of the lithium-ion battery UM2 is 3.7V. During radio use, when the power of the lithium-ion battery UM2 drops to 3.6V, it will affect the maximum operating sound effect of the radio, and the first LED D2 will flash slowly. When the power of the lithium-ion battery UM2 drops to 3.3V, it indicates that the lithium-ion battery UM2 needs to be charged, and the first LED D2 will flash quickly. When the power of the lithium-ion battery UM2 drops to 3.0V, it indicates that the radio cannot continue playing, and the first LED D2 will remain constantly lit. This invention allows users to accurately determine whether the battery level has dropped to the point where it affects the maximum sound quality of the radio, whether it has dropped to the point where the battery needs to be charged, or whether the radio can no longer play. This effectively prevents the radio from experiencing poor reception due to insufficient battery power and allows for accurate determination of the optimal charging time. Furthermore, the radio circuit uses only one LED to identify the battery level, resulting in a small footprint and low cost.

[0022] like Figure 1 and Figure 2 As shown, the lithium-ion battery UM2 is an 18650 battery, and the voltage of an 18650 battery is 3.7V; Figure 1 and Figure 3As shown, the LED control chip U3 is a 052F-STP8 type chip. When the power of the lithium-ion battery UM2 drops to 3.6V, the LED control chip U3 controls the first LED to flash slowly; when the power of the lithium-ion battery UM2 drops to 3.3V, the LED control chip U3 controls the first LED to flash quickly; when the power of the lithium-ion battery UM2 drops to 3.0V, the LED control chip U3 controls the first LED to stay on.

[0023] like Figure 1 and Figure 2 As shown, the battery power supply circuit 4 includes a 4056 charging chip IC1, a USB Type-C socket, a second resistor R6, a second LED D5, and a third resistor R90. Pins 8 and 4 of the 4056 charging chip IC1 are connected to the voltage input pin of the USB Type-C socket via the second resistor R6. The voltage input pin of the USB Type-C socket is simultaneously connected to pin 7 of the 4056 charging chip IC1 via the third resistor R90 and the second LED D5. Pin 5 of the 4056 charging chip IC1 is connected to the positive terminal of the lithium-ion battery UM2. During charging, the USB Type-C cable of the external charger is inserted into the USB Type-C socket. Under the management of the 4056 charging chip IC1, the 18650 battery is charged. The 4056 charging chip IC1 is used for charging management to ensure safe and efficient battery charging.

[0024] like Figure 1 and Figure 2 As shown, the battery power supply circuit 4 includes a 6122 battery protection chip U6, a fourth resistor R8, a diode D3, and a capacitor C8. The positive terminal of the lithium-ion battery UM2 is connected to pin 3 of the 6122 battery protection chip U6 via diode D3 and the fourth resistor R8. The negative terminal of the lithium-ion battery UM2 is connected to pin 2 of the 6122 battery protection chip U6. Capacitor C8 is connected between pin 2 and pin 3 of the 6122 battery protection chip U6. Pins 4 and 5 of the 6122 battery protection chip U6 are grounded respectively. The 6122 battery protection chip U6 is used to protect the battery from overcharge, over-discharge, and overcurrent, extending the battery's lifespan.

[0025] like Figure 1 and Figure 4 As shown, the radio integrated circuit 2 includes a C9616 type chip IC801, such as... Figure 1 and Figure 3 As shown, the speaker amplifier circuit 3 includes an 8002 chip U1 and a speaker.

[0026] like Figure 1 , Figure 3 and Figure 5As shown, the radio circuit also includes a Bluetooth main control circuit 6, a boost circuit 7, and a switching switch 8. The radio integrated circuit 2 is connected to the speaker amplifier circuit 3 via the boost circuit 7 and the switching switch 8. The Bluetooth main control circuit 6 is connected to the speaker amplifier circuit 3 via the switching switch 8. The switching switch 8 is used to switch the signal source of the speaker amplifier circuit 3 between the radio integrated circuit 2 and the Bluetooth main control circuit 6. The boost circuit 7 is used to boost the voltage to 5V. The battery power supply circuit 4 is connected to the Bluetooth main control circuit 6 to supply power to the Bluetooth main control circuit 6.

[0027] like Figure 1 and Figure 2 As shown, the radio circuit also includes a master switch 9. The input terminal of the master switch 9 is connected to the positive terminal of the lithium-ion battery UM2, and the output terminal of the master switch 9 is electrically connected to the radio integrated circuit 2, the speaker amplifier circuit 3, the battery power identification circuit 5, and the Bluetooth master control circuit 6, respectively. By controlling the master switch 9, the radio can be turned on or off.

[0028] like Figure 1 and Figure 5 As shown, the Bluetooth main control circuit 6 includes a 6945E Bluetooth main control chip, and the boost circuit 7 includes a 4004 boost chip U2. The 6945E Bluetooth main control chip, the 4004 boost chip U2, the switch 8, and the speaker amplifier circuit 3 are connected in sequence. The Bluetooth main control circuit 6 includes a USB port USB1, a Bluetooth control button 10, and a third LED light LED7. The 6945E Bluetooth main control chip is electrically connected to the USB port USB1, the Bluetooth control button 10, and the third LED light LED7.

[0029] like Figure 1 and Figure 2 As shown, the radio circuit also includes a lighting circuit 11, which includes a lighting switch 12, a fifth resistor, and a fourth LED. The input terminal of the lighting switch 12 is connected to the positive terminal of the lithium-ion battery UM2, and the output terminal of the lighting switch is grounded after passing through the fifth resistor and the fourth LED. Multiple sets of the fifth resistor and the fourth LED are connected in parallel. By controlling the lighting switch 12, the lighting circuit 11 can be turned on or off.

[0030] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A radio circuit capable of identifying battery power via an LED light, comprising an audio receiving circuit, a radio integrated circuit, a speaker amplification circuit, and a battery power supply circuit; wherein the audio receiving circuit, the radio integrated circuit, and the speaker amplification circuit are electrically connected in sequence; the audio receiving circuit receives audio signals from radio stations, demodulates, amplifies, and reduces noise through the radio integrated circuit, and then amplifies and plays them through the speaker amplification circuit; the battery power supply circuit is electrically connected to both the radio integrated circuit and the speaker amplification circuit to supply power to them; characterized in that: The battery power supply circuit includes a lithium-ion battery, and the radio circuit also includes a battery power identification circuit. The battery power identification circuit includes an LED control chip, a first resistor, and a first LED. The input terminal of the LED control chip is electrically connected to the positive terminal of the lithium-ion battery, and the output terminal of the LED control chip is connected in series with the first resistor and the first LED and then grounded. When the power of the lithium-ion battery drops to a set voltage, the LED control chip controls the first LED to flash or stay on in a set manner.

2. The radio circuit according to claim 1, which can identify battery power through an LED light, is characterized in that: The lithium-ion battery is an 18650 battery, and the LED control chip is a 052F-STP8 chip. When the lithium-ion battery power drops to 3.6V, the LED control chip controls the first LED to flash slowly; when the lithium-ion battery power drops to 3.3V, the LED control chip controls the first LED to flash quickly; and when the lithium-ion battery power drops to 3.0V, the LED control chip controls the first LED to stay on.

3. The radio circuit according to claim 1, which can identify battery power through an LED light, is characterized in that: The battery power supply circuit includes a 4056 charging chip, a USB Type-C socket, a second resistor, a second LED, and a third resistor. Pins 8 and 4 of the 4056 charging chip are connected to the voltage input pin of the USB Type-C socket via the second resistor. The voltage input pin of the USB Type-C socket is also connected to pin 7 of the 4056 charging chip via the third resistor and the second LED. Pin 5 of the 4056 charging chip is connected to the positive terminal of the lithium-ion battery.

4. The radio circuit according to claim 3, which can identify battery power through LED lights, is characterized in that: The battery power supply circuit includes a 6122 battery protection chip, a fourth resistor, a diode, and a capacitor. The positive terminal of the lithium-ion battery is connected to the third pin of the 6122 battery protection chip via the diode and the fourth resistor. The negative terminal of the lithium-ion battery is connected to the second pin of the 6122 battery protection chip. A capacitor is connected between the second and third pins of the 6122 battery protection chip. The fourth and fifth pins of the 6122 battery protection chip are grounded respectively.

5. The radio circuit according to claim 1, which can identify battery power through an LED light, is characterized in that: The radio integrated circuit includes a C9616 chip, and the speaker amplifier circuit includes an 8002 chip and a speaker.

6. The radio circuit capable of identifying battery power via an LED light according to any one of claims 1-5, characterized in that: The radio circuit also includes a Bluetooth master control circuit, a boost circuit, and a switching switch. The radio integrated circuit is connected to the speaker amplifier circuit after passing through the boost circuit and the switching switch. The Bluetooth master control circuit is connected to the speaker amplifier circuit after passing through the switching switch. The switching switch is used to switch the signal source of the speaker amplifier circuit between the radio integrated circuit and the Bluetooth master control circuit. The boost circuit is used to boost the voltage to 5V. The battery power supply circuit is connected to the Bluetooth master control circuit to supply power to the Bluetooth master control circuit.

7. The radio circuit according to claim 6, which can identify battery power through an LED light, is characterized in that: The radio circuit also includes a master switch, the input of which is connected to the positive terminal of the lithium-ion battery, and the output of which is electrically connected to the radio integrated circuit, the speaker amplifier circuit, the battery power identification circuit, and the Bluetooth master control circuit.

8. The radio circuit according to claim 7, which can identify battery power through an LED light, is characterized in that: The Bluetooth master control circuit includes a 6945E Bluetooth master control chip, and the boost circuit includes a 4004 boost chip. The 6945E Bluetooth master control chip, the 4004 boost chip, the switch, and the speaker amplifier circuit are connected in sequence.

9. The radio circuit according to claim 8, which can identify battery power through an LED light, is characterized in that: The Bluetooth main control circuit includes a USB port, a Bluetooth control button, and a third LED light. The 6945E Bluetooth main control chip is electrically connected to the USB port, the Bluetooth control button, and the third LED light.

10. The radio circuit capable of identifying battery power via an LED light according to any one of claims 1-5, characterized in that: The radio circuit also includes a lighting circuit, which includes a lighting switch, a fifth resistor, and a fourth LED. The input terminal of the lighting switch is connected to the positive terminal of the lithium-ion battery, and the output terminal of the lighting switch is grounded after passing through the fifth resistor and the fourth LED. Multiple sets of the fifth resistor and the fourth LED are connected in parallel.

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