Bluetooth earphone with solar energy and TypeC charging functions

Abstract

The utility model provides a Bluetooth earphone with solar energy and TypeC charging functions, comprising an earphone body and a charging control circuit, the charging control circuit comprises a solar energy input circuit, a TypeC input circuit, a control unit, a battery and a PMOS tube D8; the solar input circuit is connected with a drain electrode of the PMOS tube D8, a source electrode of the PMOS tube D8 is connected with an input end of the control unit, the TypeC input circuit is respectively connected with a grid electrode of the PMOS tube D8 and the input end of the control unit, and an output end of the control unit is connected with the battery. According to the technical scheme, two charging modes of solar charging or TypeC charging can be used, and current priority management is automatically carried out, so that the cruising ability of the Bluetooth earphone is fully improved, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone equipment, and in particular to a Bluetooth earphone with solar energy and Type C charging functions. Background Art

[0002] Existing Bluetooth headsets are usually charged through a single charging port. In order to meet daily use needs, the headset usually needs to be charged every day, and the battery life is poor. Therefore, there is an urgent need for a Bluetooth headset with more abundant charging methods. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model proposes a Bluetooth headset with solar energy and Type C charging functions, which can use two charging methods: solar energy charging or Type C charging, and automatically perform current priority management, fully improving the battery life of the Bluetooth headset and improving the user experience.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A Bluetooth headset with solar energy and Type C charging functions, comprising a headset body and a charging control circuit, wherein the charging control circuit comprises a solar energy input circuit, a Type C input circuit, a control unit, a battery and a PMOS tube D8;

[0006] The solar input circuit is connected to the drain of the PMOS tube D8, the source of the PMOS tube D8 is connected to the input end of the control unit, the Type C input circuit is respectively connected to the gate of the PMOS tube D8 and the input end of the control unit, and the output end of the control unit is connected to the battery.

[0007] In a further implementation, the Type C input circuit includes a Type C socket, an overvoltage protection circuit and a reset circuit. The overvoltage protection circuit is connected to the power supply pin of the Type C socket, and the output end of the overvoltage protection circuit is connected to the reset circuit, the gate of the PMOS tube D8 and the input end of the control unit.

[0008] In a further implementation, the overvoltage protection circuit includes an ESD electrostatic diode, a capacitor C17 and a voltage protection unit U5, the input end of the voltage protection unit U5 is connected to the power supply pin of the TypeC socket, and the output end of the voltage protection unit U5 is respectively connected to the reset circuit, the gate of the PMOS tube D8 and the input end of the control unit; the ESD electrostatic diode is connected to the power supply pin and grounded, and the capacitor C17 is connected to the power supply pin and grounded.

[0009] In a further embodiment, the reset circuit includes an NMOS tube D11, the overvoltage protection circuit is connected to the gate of the NMOS tube D11, and the drain and source of the NMOS tube D11 are respectively connected to the control board.

[0010] In a further embodiment, a Schottky diode D5 is further included, and two ends of the Schottky diode D5 are respectively connected to the output end of the overvoltage protection circuit and the input end of the control unit U3.

[0011] In a further embodiment, the solar energy input circuit includes a solar cell panel T3, and a 6V output end of the solar cell panel T3 is connected to the source of the PMOS tube D8.

[0012] In a further embodiment, the control unit is configured as a ZS6073 management chip.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The charging control circuit in the utility model includes a solar input circuit, a Type C input circuit, a control unit, a battery and a PMOS tube D8, which can meet the two charging modes of Type C charging or solar charging. When the two input circuits are working normally, the Type C input circuit has priority. The PMOS tube D8 ensures that when the Type C input circuit has power input, the solar input circuit is disconnected to ensure the circuit safety of the Bluetooth headset. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 is a structural schematic diagram of a charging control circuit in this embodiment;

[0017] Figure 2 Schematic diagram of the structure of the control board in this embodiment. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 The utility model embodiment discloses a Bluetooth headset with solar energy and Type C charging functions, including a headset body and a charging control circuit, wherein the charging control circuit includes a solar energy input circuit, a Type C input circuit, a control unit, a battery, and a PMOS tube D8; the solar energy input circuit is connected to the drain of the PMOS tube D8, the source of the PMOS tube D8 is connected to the input end of the control unit, the Type C input circuit is respectively connected to the gate of the PMOS tube D8 and the input end of the control unit, and the output end of the control unit is connected to the battery. The charging control circuit in the utility model includes a solar energy input circuit, a Type C input circuit, a control unit, a battery, and a PMOS tube D8, which can meet the two charging modes of Type C charging or solar charging. When both input circuits are working normally, the Type C input circuit has priority. Specifically, when the Type C input circuit is not connected to a power source, the gate of the PMOS tube D8 has no voltage, the PMOS tube D8 is turned on, and the solar input circuit is connected to the control unit; when the Type C input circuit is connected to a power source, the gate of the PMOS tube D8 obtains a voltage, the PMOS tube D8 is open, and the solar input circuit is disconnected from the control unit, ensuring the circuit safety of the Bluetooth headset. This embodiment can use both solar charging and Type C charging, and automatically performs current priority management, which fully improves the battery life of the Bluetooth headset and improves the user experience.

[0020] Furthermore, the TypeC input circuit includes a TypeC socket, an overvoltage protection circuit and a reset circuit. The overvoltage protection circuit is connected to the power supply pin of the TypeC socket, and the output end of the overvoltage protection circuit is connected to the reset circuit, the gate of the PMOS tube D8 and the input end of the control unit. In the TypeC charging mode, the power supply pin of the TypeC socket outputs a 5V voltage, which enters the PMOS tube D8 and the control unit U3 through the overvoltage protection circuit and the voltage protection unit U5.

[0021] The overvoltage protection circuit includes an ESD electrostatic diode, a capacitor C17 and a voltage protection unit U5. The input end of the voltage protection unit U5 is connected to the power supply pin of the Type C socket, and the output end of the voltage protection unit U5 is respectively connected to the reset circuit, the gate of the PMOS tube D8 and the input end of the control unit; the ESD electrostatic diode is connected to the power supply pin and grounded, and the capacitor C17 is connected to the power supply pin and grounded. The voltage protection power supply U5 is configured as a 30V withstand voltage WP1230 chip.

[0022] like Figure 1 and Figure 2 As shown, the reset circuit includes an NMOS tube D11, the overvoltage protection circuit is connected to the gate of the NMOS tube D11, and the drain and source of the NMOS tube D11 are respectively connected to the control board. When power flows into the Type C input circuit, a voltage is applied to the gate of the NMOS tube D11, and the drain and source of the NMOS tube D11 are connected, thereby shutting down and resetting the Bluetooth headset in the Type C charging mode.

[0023] In a further embodiment, a Schottky diode D5 is further included, and the two ends of the Schottky diode D5 are respectively connected to the output end of the overvoltage protection circuit and the input end of the control unit U3. The Schottky diode D5 can prevent the solar input circuit from consuming energy through the resistor R4.

[0024] In a further embodiment, the solar energy input circuit includes a solar cell panel T3, and a 6V output end of the solar cell panel T3 is connected to the source of the PMOS tube D8.

[0025] The control unit U3 adopts the ZS6073 management chip. When the voltage of the battery voltage detection input terminal (FB) exceeds 3V, the charger adopts the constant current mode to charge the battery, and the charging current is determined by the resistor RI SET between the ISET pin and GND. When the voltage of the battery voltage detection input terminal (FB) is close to the battery terminal modulation voltage, the charging current gradually decreases, and the ZS6073 chip enters the constant voltage charging mode. When the input voltage is greater than 4.45V and the charging current decreases to the charging end threshold, the charging cycle ends. The charging end threshold is 10% of the constant current charging current. If you want to start a new charging cycle, just turn off the input voltage and then turn it on again. When the voltage of the battery voltage detection input terminal (FB) drops below the recharging threshold, a new charging cycle starts automatically.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Bluetooth headset with solar energy and Type C charging functions, comprising a headset body and a charging control circuit, characterized in that: The charging control circuit includes a solar input circuit, a Type C input circuit, a control unit, a battery and a PMOS tube D8; The solar input circuit is connected to the drain of the PMOS tube D8, the source of the PMOS tube D8 is connected to the input end of the control unit, the Type C input circuit is respectively connected to the gate of the PMOS tube D8 and the input end of the control unit, and the output end of the control unit is connected to the battery.

2. The Bluetooth headset with solar energy and Type C charging function according to claim 1, characterized in that: The Type C input circuit includes a Type C socket, an overvoltage protection circuit and a reset circuit. The overvoltage protection circuit is connected to the power supply pin of the Type C socket, and the output end of the overvoltage protection circuit is connected to the reset circuit, the gate of the PMOS tube D8 and the input end of the control unit.

3. The Bluetooth headset with solar energy and Type C charging function according to claim 2, characterized in that: The overvoltage protection circuit includes an ESD electrostatic diode, a capacitor C17 and a voltage protection unit U5, the input end of the voltage protection unit U5 is connected to the power supply pin of the Type C socket, and the output end of the voltage protection unit U5 is respectively connected to the reset circuit, the gate of the PMOS tube D8 and the input end of the control unit; The ESD electrostatic diode is connected to the power supply pin and grounded, and the capacitor C17 is connected to the power supply pin and grounded.

4. The Bluetooth headset with solar energy and Type C charging function according to claim 2, characterized in that: The reset circuit includes an NMOS tube D11, the overvoltage protection circuit is connected to the gate of the NMOS tube D11, and the drain and source of the NMOS tube D11 are respectively connected to the control board.

5. The Bluetooth headset with solar energy and Type C charging function according to claim 2, characterized in that: It also includes a Schottky diode D5, and two ends of the Schottky diode D5 are respectively connected to the output end of the overvoltage protection circuit and the input end of the control unit U3.

6. The Bluetooth headset with solar energy and Type C charging function according to claim 1, characterized in that: The solar energy input circuit includes a solar cell panel T3, and a 6V output end of the solar cell panel T3 is connected to the source of the PMOS tube D8.

7. The Bluetooth headset with solar energy and Type C charging function according to claim 1, characterized in that: The control unit is configured as a ZS6073 management chip.

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