一种TWS耳机充电盒电路及充电盒

Abstract

本实用新型提供一种TWS耳机充电盒电路及充电盒，电路包括协议模块、第一充电模块、转换模块、第二充电模块及第三充电模块；所述协议模块接收外部电源信号并处理输出至所述第一充电模块；所述转换模块接收外部电源信号并处理后分别输出至所述第二充电模块和所述第三充电模块；所述第一充电模块接收协议模块的输出信号驱动第一设备充电；所述第二充电模块和所述第三充电模块分别接收转换模块的输出信号驱动第二设备和第三设备充电。通过设置协议模块和转换模块分别处理外部电源信号，实现了在充电盒接受外部充电的同时，能够同时为多个不同类型的设备提供充电服务。

Claims

1. A TWS earphone charging case circuit, characterized in that, It includes a protocol module, a first charging module, a conversion module, a second charging module, and a third charging module; The protocol module receives external power signals, processes them, and outputs them to the first charging module. The conversion module receives external power signals, processes them, and outputs them to the second charging module and the third charging module respectively. The first charging module receives the output signal of the protocol module to charge the first device; the second charging module and the third charging module respectively receive the output signal of the conversion module to charge the second device and the third device.

2. The TWS earphone charging case circuit of claim 1, wherein, The protocol module includes a protocol chip; The protocol chip's first pin is connected in series with a first capacitor and then grounded; the sixth pin is connected to a first resistor; the seventh pin is connected to a second resistor; the fifteenth pin is connected to a second capacitor, a third resistor, and a fourth resistor; the sixteenth pin is connected in series with a fifth resistor; the seventeenth pin is connected in series with a sixth resistor; the eighteenth pin is connected to a third capacitor, a seventh resistor, and an eighth resistor; the nineteenth pin is connected to a fourth capacitor and a ninth resistor, with the other end of the fourth capacitor grounded; the twentieth pin is connected to a tenth resistor; the twenty-first pin is connected to an eleventh resistor; the twenty-second pin is connected to a fifth capacitor and a twelfth resistor, with the other end of the fifth capacitor grounded; the twenty-fourth pin is connected to a sixth capacitor and a thirteenth resistor and then grounded; the thirty-first pin is connected to a seventh capacitor and a fourteenth resistor, with the other end of the seventh capacitor grounded; and the thirty-second pin is connected to an eighth capacitor and a fifteenth resistor, with the other end of the eighth capacitor grounded.

3. The TWS earphone charging case circuit of claim 1, wherein, The first charging module includes a first field-effect transistor and a second field-effect transistor, and the output terminal of the first field-effect transistor is connected to the output terminal of the second field-effect transistor; The first input terminal of the first field-effect transistor is connected to the sixteenth resistor, the third input terminal is connected to the ninth capacitor and grounded, and the second input terminal is connected to both the first input terminal and the third input terminal. The third input terminal of the second field-effect transistor is connected to the seventeenth resistor and the tenth capacitor, respectively, and the tenth capacitor is grounded; the first input terminal and the second input terminal of the second field-effect transistor are respectively connected to the third input terminal.

4. The TWS earphone charging case circuit of claim 1, wherein, The conversion module includes a conversion chip; The first pin of the conversion chip is connected to the eleventh capacitor and grounded; the fourth pin is connected to the eighteenth and nineteenth resistors respectively, and the other end of the eighteenth resistor is grounded; the fifth pin is connected in series with the first inductor and then connected to one end of the twelfth, thirteenth and fourteenth capacitors respectively, and the other ends of the twelfth, thirteenth and fourteenth capacitors are grounded.

5. The TWS earphone charging case circuit of claim 1, wherein, The second charging module includes a boost chip. The first pin of the boost chip is connected to one end of the fifteenth capacitor and one end of the sixteenth capacitor, and the other end of the fifteenth capacitor and the sixteenth capacitor are grounded; the third pin is connected in series with the twentieth resistor and then grounded. The fourth pin is connected to one end of the seventeenth capacitor and one end of the twenty-first resistor, and the other end of the seventeenth capacitor is grounded. The fourth pin is also connected to the field-effect transistor and the first diode. The sixth pin is connected to the second inductor and then to the fourth pin.

6. The TWS earphone charging case circuit of claim 1, wherein, The third charging module includes an MCU chip. The 19th pin of the MCU chip is connected in series with the 18th capacitor and grounded; the 20th pin is connected in series with the 19th capacitor and grounded; the 21st pin is connected to the second diode and the 20th capacitor respectively; and the 22nd pin is connected in series with the 21st capacitor and grounded.

7. A TWS earphone charging case, characterized in that, The TWS earphone charging case circuit according to any one of claims 1-6 includes: The charging case itself; The first interface provided on the charging case body is used to connect to an external power source; A second interface is provided on the charging case body for connecting the first device; The cavity inside the charging case body is used to accommodate the second device.

8. The TWS earphone charging box of claim 7, wherein, The first interface and the second interface use different connection methods.

9. The TWS earphone charging box of claim 7, wherein, The charging case body has a flip-top structure.

10. The TWS earphone charging box of claim 7, wherein, The charging box body is also equipped with an energy storage module, which is electrically connected to the third charging module and is used to provide backup power for the first charging module and the second charging module.

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