CN209626986U - A kind of TWS charging bluetooth earphone circuit and TWS Bluetooth earphone circuit - Google Patents

Abstract

The utility model discloses a kind of TWS charging bluetooth earphone circuit and TWS Bluetooth earphone circuit, TWS charging bluetooth earphone circuit includes external power supply access port, over-voltage over-current protection module, charging module, the first power module, boost module, switch module, sampling output module, the first energy supply control module；The charging module, the first power module, boost module, switch module, sampling output module are electrically connected with the first energy supply control module respectively；TWS Bluetooth earphone circuit includes power input, second power supply module, second source control module, signal processing module；The power input, second power supply module, second source control module are electrically connected with signal processing module respectively；The utility model has the advantages that battery length, automatic charging, circuit protection, TWS Bluetooth earphone circuit Auto Power On or shutdown.

Description

A kind of TWS charging bluetooth earphone circuit and TWS Bluetooth earphone circuit

Technical field

The utility model belongs to bluetooth headset technical field, and in particular to a kind of TWS charging bluetooth earphone circuit and TWS are blue Tooth head circuit.

Background technique

Currently, TWS bluetooth headset matches, generalling use left and right earphone, 5 seconds power buttons of long-pressing are matched simultaneously.General In the case of, TWS bluetooth headset is placed in earphone charging box, when using TWS bluetooth headset, needs to take out from earphone charging box TWS bluetooth headset and the booting of long-pressing key wait earphone pairing rear can be used.User is driving or is being carrying out task When, the time that such operation occupies is long, is unfavorable for receiving calls in time；It, will meanwhile after having used TWS bluetooth headset TWS bluetooth headset, which is put into, to be needed to charge by after power key in earphone charging box, and operation sequence is more.

Utility model content

The utility model is directed to above-described deficiency, provides a kind of battery length, automatic charging, circuit guarantor The TWS charging bluetooth earphone circuit and TWS Bluetooth earphone circuit of shield, TWS Bluetooth earphone circuit Auto Power On or shutdown.

To achieve the above object, the utility model provides the following technical solutions: a kind of TWS charging bluetooth earphone circuit and TWS Bluetooth earphone circuit, TWS charging bluetooth earphone circuit include external power supply access port, over-voltage over-current protection module, charging mould Block, the first power module, boost module, switch module, sampling output module, the first energy supply control module；The external power supply Access port and the input terminal of over-voltage over-current protection module are electrically connected, the output end and charging mould of the over-voltage over-current protection module The input terminal of block is electrically connected, the input terminal electric connection of the output end of the charging module and the first power module, and described the The input terminal of the output end of one power module and boost module is electrically connected, the output end of the boost module and switch module Input terminal is electrically connected, and the output end of the switch module and the input terminal of sampling output module are electrically connected；The charging mould Block, the first power module, boost module, switch module, sampling output module are electrically connected with the first energy supply control module respectively.

Preferably, the switch module includes switching circuit, protection circuit；The switching circuit include field-effect tube Q1, Field-effect tube Q3, resistance R8, resistance R10, resistance R11；One end of the drain electrode of the field-effect tube Q3 and resistance R11 with switch The input terminal of module is electrically connected, and the grid of the field-effect tube Q3 is connect with the other end of resistance R11, and passes through resistance R10 It is connect with the drain electrode of field-effect tube Q1, the source electrode of the field-effect tube Q3 and the output end of switch module are electrically connected, the field The source electrode of effect pipe Q1 is grounded, and the grid of field-effect tube Q1 is electrically connected by resistance R8 and the first energy supply control module.

Preferably, the protection circuit includes field-effect tube Q2, resistance R7, resistance R9, resistance R12, two pole of transient supression Pipe E2, zener diode D2；The cathode of the anode of the transient supression diode E2 and zener diode D2 are and switch module Output end be electrically connected, the anode of the cathode of transient supression diode E2 and zener diode D2 are grounded；The field-effect The drain electrode of pipe Q2 is electrically connected by the output end of resistance R12 and switch module, the source electrode ground connection of field-effect tube Q2, field-effect tube The grid of Q2 is grounded through resistance R7, and is electrically connected by resistance R9 and the first energy supply control module.

Preferably, first energy supply control module includes signal detection module, the first MCU module, electricity quantity display module； The output end of the power end of the signal detection module and the first power module is electrically connected, the output of the signal detection module End is electrically connected with the first MCU module；The electricity quantity display module and the first MCU module are electrically connected.

Preferably, the signal detection module includes Hall switch chip CE1001 and its Hall switch chip CE1001 Peripheral circuit.

Preferably, the sampling output module includes the first output end J1, second output terminal J2, resistance R5, resistance R6, electricity Hinder R16, resistance R17；The anode of the first output end J1 and second output terminal J2 electrically connects with the output end of switch module It connects, the cathode of the first output end J1 is grounded by resistance R6, and is electrically connected by resistance R5 and the first MCU module, and second is defeated The cathode of outlet J2 is grounded by resistance R17, and is electrically connected by R16 and the first MCU module；The first output end J1, Second output terminal J2 gives junior's circuit to provide power supply power supply respectively.

Based on a kind of above-described TWS Bluetooth earphone circuit, including power input, second power supply module, the second electricity Source control module, signal processing module, sampling output module；The input terminal of the power input and second source control module It is electrically connected, the output end and second power supply module input terminal of the second source control module are electrically connected, second electricity The output end and signal processing module of source module are electrically connected；The power input, second power supply module, second source control Module is electrically connected with signal processing module respectively；The sampling output module include the first output end J1, second output terminal J2, Resistance R5, resistance R6, resistance R16, resistance R17；The cathode of first output end J1 is grounded by resistance R6, second output terminal J2's Cathode is grounded by resistance R17；The first output end J1, second output terminal J2 give junior's circuit to provide power supply power supply respectively； The power input and the first output end J1 or second output terminal J2 are electrically connected.

Preferably, the second source control module includes chip U5, resistance R50, resistance R51, resistance R52, capacitor C52；The chip U5 is equipped with 6 pins, and the first pin and the 6th pin are electrically connected with signal processing module respectively, and second Pin ground connection, third pin and signal processing module are electrically connected, and are grounded by resistance R52, and the 4th pin passes through resistance R50 It is electrically connected with power input, and is grounded by resistance R51, the input terminal of the 5th pin and second power supply module electrically connects It connects, and is grounded by capacitor C52.

Preferably, the signal processing module includes the second MCU module, Anneta module, speech reception module, sound broadcasting Module, signal lamp module, function button module；The Anneta module, speech reception module, sound broadcasting module, signal lamp mould Port corresponding with the second MCU module is electrically connected respectively for block, function button module.

Preferably, second MCU module includes chip AB1526P and its chip AB1526P peripheral circuit.

The utility model compared with prior art, has the advantages that

(1), the TWS charging bluetooth earphone circuit of the utility model is by adopting over-voltage over-current protection module and charging module With the charging modes of chip circuit, output is more stable to the charging voltage of the first power module, extends the first power module The service life of rechargeable battery；Additionally by being provided with signal detection mould and sampling the mutual cooperation of output module, may be implemented The output or disconnection of TWS charging bluetooth earphone circuit voltage；In addition when sampling output module appearance short circuit, starting protection is electric Road can effectively be protected to entire charging circuit；

(2) the TWS Bluetooth earphone circuit of the utility model detects power input and TWS bluetooth by the second MCU module Earphone charging circuit connects or disconnects, it can be achieved that the Auto Power On of TWS Bluetooth earphone circuit or shutdown and TWS bluetooth headset fill The automatic charging of circuit；Therefore the utility model has battery length, automatic charging, circuit protection, TWS bluetooth ear Electromechanical road Auto Power On or the beneficial effect of shutdown.

Detailed description of the invention

Fig. 1 is the frame principle figure of the TWS charging bluetooth earphone circuit of the utility model；

Fig. 2 is the frame principle figure of the TWS Bluetooth earphone circuit of the utility model；

Fig. 3 is the external power supply access port, over-voltage over-current protection module, charging module, the first power supply mould of the utility model The circuit diagram of block；

Fig. 4 is the boost module, switch module, the circuit diagram for sampling output module of the utility model；

Fig. 5 is the circuit diagram of first energy supply control module of the utility model；

Fig. 6 is the circuit diagram of the signal processing module of the utility model；

Fig. 7 is the power input of the utility model, second power supply module, the circuit theory of second source control module Figure.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

It please refers to shown in Fig. 1 to Fig. 7, the utility model provides the following technical solutions: a kind of TWS charging bluetooth earphone circuit And TWS Bluetooth earphone circuit, TWS charging bluetooth earphone circuit include external power supply access port 1, over-voltage over-current protection module 2, fill Electric module 3, the first power module 4, boost module 5, switch module 6, sampling output module 7, the first energy supply control module 8；Institute The input terminal for stating external power supply access port 1 and over-voltage over-current protection module 2 is electrically connected, the over-voltage over-current protection module 2 The input terminal of output end and charging module 3 is electrically connected, the input of the output end of the charging module 3 and the first power module 4 End is electrically connected, and the output end of first power module 4 and the input terminal of boost module 5 are electrically connected, the boost module 5 Output end and the input terminal of switch module 6 be electrically connected, the output end of the switch module 6 with sample the defeated of output module 7 Enter end to be electrically connected；The charging module 3, the first power module 4, boost module 5, switch module 6, sampling output module 7 divide It is not electrically connected with the first energy supply control module 8.

The switch module 6 includes switching circuit 61, protection circuit 62；The switching circuit 61 include field-effect tube Q1, Field-effect tube Q3, resistance R8, resistance R10, resistance R11；One end of the drain electrode of the field-effect tube Q3 and resistance R11 with open The input terminal for closing module 6 is electrically connected, and the grid of the field-effect tube Q3 is connect with the other end of resistance R11, and passes through resistance R10 is connect with the drain electrode of field-effect tube Q1, and the source electrode of the field-effect tube Q3 and the output end of switch module 6 are electrically connected, institute The source electrode ground connection of field-effect tube Q1 is stated, the grid of field-effect tube Q1 is electrically connected by resistance R8 with the first energy supply control module 8 It connects.

The protection circuit 62 includes field-effect tube Q2, resistance 7, resistance R9, resistance R12, transient supression diode E2, steady Press diode D2；The output of the anode of the transient supression diode E2 and the cathode of zener diode D2 with switch module 6 End is electrically connected, and the cathode of transient supression diode E2 and the anode of zener diode D2 are grounded；The field-effect tube Q2's Drain electrode is electrically connected by the output end of resistance R12 and switch module 6, the source electrode ground connection of field-effect tube Q2, field-effect tube Q2's Grid is grounded through resistance R7, and is electrically connected by resistance R9 and the first energy supply control module 8.

First energy supply control module 8 includes signal detection module 81, the first MCU module 83, electricity quantity display module 82； The output end of the power end of the signal detection module 81 and the first power module 4 is electrically connected, the signal detection module 81 Output end and the first MCU module 83 be electrically connected；The electricity quantity display module 82 and the first MCU module 83 are electrically connected.

The signal detection module 81 includes Hall switch chip CE1001 and its periphery Hall switch chip CE1001 electricity Road.

The sampling output module 7 includes the first output end J1, second output terminal J2, resistance R5, resistance R6, resistance R16, resistance R17；The anode of the first output end J1 and second output terminal J2 electrically connects with the output end of switch module 6 It connects, the cathode of the first output end J1 is grounded by resistance R6, and is electrically connected by resistance R5 and the first MCU module 83, second The cathode of output end J2 is grounded by resistance R17, and is electrically connected by R16 and the first MCU module 83；First output End J1, second output terminal J2 give junior's circuit to provide power supply power supply respectively.

The over-voltage over-current protection module 2 includes chip LP5305 and its chip LP5305 peripheral circuit, and charging module 3 wraps Chip LP4060 and its chip LP4060 peripheral circuit are included, boost module 5 includes chip CE8405AE and its chip CE8405AE Peripheral circuit, the first MCU module 83 include control chip Q4 and its chip Q4 peripheral circuit.

Embodiment 1:

A kind of TWS Bluetooth earphone circuit, including power input 9, second power supply module 10, second source control module 11, signal processing module 12, sampling output module 7；The input terminal electricity of the power input 9 and second source control module 11 Property connection, the output end of the second source control module 11 and 10 input terminal of second power supply module be electrically connected, described second The output end and signal processing module 12 of power module 10 are electrically connected；The power input 9, second power supply module 10, Two energy supply control modules 11 are electrically connected with signal processing module 12 respectively；The sampling output module 7 includes the first output end J1, second output terminal J2, resistance R5, resistance R6, resistance R16, resistance R17；The cathode of first output end J1 is connect by resistance R6 The cathode on ground, second output terminal J2 is grounded by resistance R17；The first output end J1, second output terminal J2 give junior respectively Circuit provides power supply power supply；Power input 9 and the first output end J1 or second output terminal J2 is electrically connected.

The second source control module 11 includes chip U5, resistance R50, resistance R51, resistance R52, capacitor C52；It is described Chip U5 is equipped with 6 pins, and the first pin and the 6th pin are electrically connected with signal processing module 12 respectively, and second pin connects Ground, third pin and signal processing module 12 are electrically connected, and are grounded by resistance R52, and the 4th pin passes through resistance R50 and electricity Source input terminal 13 is electrically connected, and is grounded by resistance R51, and the 5th pin and the input terminal of second power supply module 10 electrically connect It connects, and is grounded by capacitor C52.

The signal processing module 12 includes the second MCU module 121, Anneta module 122, speech reception module 123, sound Playing module 124, signal lamp module 125, function button module 126；The Anneta module 122, speech reception module 123, sound Port corresponding with the second MCU module 121 is electrical respectively for sound playing module 124, signal lamp module 125, function button module 126 Connection.

Second MCU module 121 includes chip AB1526P and its chip AB1526P peripheral circuit.

The Anneta module 122 includes antenna T1, resistance R61, capacitor C60, capacitor C61, capacitor C62, capacitor C63, electricity Hold C64, capacitor C82, inductance L2, inductance L4, one end of the antenna T1 connection capacitor C82, and is grounded by capacitor C64, institute The other end for stating capacitor C82 is separately connected one end of capacitor C61, and is grounded by capacitor C63, the other end of the capacitor C61 One end of inductance L4 is connected, and is grounded by capacitor C62, the other end of the inductance L4 electrically connects with the second MCU module 121 It connects, and passes through one end of resistance R61 connection capacitor C60, the other end ground connection of the capacitor C60, one end of the inductance L2 connects The other end of inductance L4 is connect, the other end of inductance L2 and the second MCU module 121 are electrically connected.

The speech reception module 123 includes microphone, resistance R54, resistance R55, resistance R56, resistance R57, capacitor C53, capacitor C54, capacitor C55；One end of one end connection resistance R55 of the microphone, and be grounded by capacitor C54, it is described The other end of resistance R55 and the second MCU module 121 are electrically connected, and are grounded by resistance R57, the other end of the microphone One end of resistance R54 is connected, and is grounded by capacitor C53, the other end of the resistance R54 electrically connects with the second MCU module 121 It connects, and is electrically connected respectively with one end of capacitor C55, the second MCU module 121 by resistance R56, the capacitor C55's is another End ground connection.

The sound broadcasting module 124 includes loudspeaker, resistance R58, resistance R59, capacitor C56, and one end of the loudspeaker is logical It crosses resistance R58 to be electrically connected with one end of capacitor C56, the second MCU module 121 respectively, the other end of the loudspeaker passes through resistance R59 is electrically connected with the other end of capacitor C56, the second MCU module 121 respectively.

The signal lamp module 125 includes light emitting diode D5, light emitting diode D6, the anode of the light emitting diode D5 It is electrically connected with second power supply module 10 with the anode of light emitting diode D6, the cathode of the light emitting diode D5 and luminous two The cathode of pole pipe D6 is electrically connected with the second MCU module 121 respectively.

The function button module 126 includes key S2, resistance R53；One end of the key S2 and second power supply module 10 are electrically connected, and the other end of key S2 is electrically connected by resistance R4 and the second MCU module 121.

Embodiment 2:

Working principle of the utility model is:

(1), TWS charging bluetooth earphone circuit: after external power supply access port 1 accesses power supply, power supply is protected by over-voltage and over-current Module 2 is protected, then is charged by charging module 3 to the first power module 4, the first power module 4 passes through after being boosted by boost module 5 It crosses switch module 6 and exports the power supply to charge for TWS Bluetooth earphone circuit to sampling output module 7；TWS Bluetooth earphone circuit connects After connecing its charging circuit, sampling output module 7 can sample the charge condition of TWS Bluetooth earphone circuit, and sampling is believed Number it is transferred to the first MCU module 83, while the first MCU module 83 can receive the signal of signal detection module 81；

(2), when the first MCU module 83 does not receive the signal of signal detection module 81, first is given in sampling output module 7 In the case that MCU module 83 provides the sampled signal of not enough power supply, the first MCU module 83 can control boost module 5 and open, switch Module 6 is opened, and makes to sample the power supply of 7 out-put supply of output module, to charge to TWS Bluetooth earphone circuit；It is defeated sampling In the case that module 7 provides the sampled signal that electricity has been filled with to the first MCU module 83 out, the first MCU module 83 can control liter Die block 5 is closed, switch module 6 is closed, and makes to sample the stopping power supply power supply of output module 7, and then to TWS Bluetooth earphone circuit Stop charging；

(3), when the first MCU module 83 receives the signal of signal detection module 81, the first MCU module 83 can control boosting Module 5 is closed, switch module 6 is closed, and sampling output module 7 is exported without power supply, to stop filling to TWS Bluetooth earphone circuit At this moment electricity can realize that boost module 5 is opened, switch module 6 is opened, and makes to sample defeated by the key S1 of the first MCU module 83 7 out-put supply of module out charges to TWS Bluetooth earphone circuit；After TWS Bluetooth earphone circuit is fully charged, sampling output mould Block 7 will be filled with electric signal transmission to the first MCU module 83, and the first MCU module 83 can control the closing of boost module 5, switch module It closes, stops charging to TWS Bluetooth earphone circuit；

(4), the charging module 3 of TWS charging bluetooth earphone circuit can pass the remaining capacity situation of the first power module 4 It is defeated by the first MCU and touches block 83, the progress remaining capacity of electricity quantity display module 82 is controlled by the first MCU module 83 and is shown, to sentence It is disconnected whether to need to charge to the first power module 4；

(5), there are short-circuit feelings in the output end of sampling output module 7 in the protection circuit 62 of TWS charging bluetooth earphone circuit When condition, short-circuit signal can be transferred to the first MCU module 83,83 control protection electric circuit 62 of the first MCU module by sampling output module 7 Work, to effectively protect charging circuit；

(6), TWS Bluetooth earphone circuit: when power input 9 accesses TWS charging bluetooth earphone circuit, charge power supply warp After power input 9, charged by second source control module 11 to second power supply module 10, second power supply module 10 is to letter Number processing module 12 is powered；Power input 9 can give the second MCU module 121 1 charging signals simultaneously, the second MCU module 121 The function that Anneta module 122, speech reception module 123, sound broadcasting module 124 can be closed after reception charging signals keeps TWS blue Tooth earphone enters charge mode；

(7), when power input 13 is from connection charging TWS charging bluetooth earphone circuit to when disconnecting, power input End 9 can give the second MCU module 121 1 enabling signals, and the second MCU module 121 will start Anneta module 122, sound receives mould The function of block 123, sound broadcasting module 124 makes TWS Bluetooth earphone circuit enter power on mode, thus with mobile phone and other one Earphone is matched.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (10)

1. a kind of TWS charging bluetooth earphone circuit, it is characterised in that: including external power supply access port, over-voltage over-current protection module, Charging module, the first power module, boost module, switch module, sampling output module, the first energy supply control module；It is described outer The input terminal of portion's plant-grid connection mouth and over-voltage over-current protection module is electrically connected, the output end of the over-voltage over-current protection module with The input terminal of charging module is electrically connected, and the input terminal of the output end of the charging module and the first power module is electrically connected, The output end of first power module and the input terminal of boost module are electrically connected, the output end and switch of the boost module The input terminal of module is electrically connected, and the output end of the switch module and the input terminal of sampling output module are electrically connected；It is described Charging module, the first power module, boost module, switch module, sampling output module are electric with the first energy supply control module respectively Property connection.

2. TWS charging bluetooth earphone circuit according to claim 1, it is characterised in that: the switch module includes switch Circuit, protection circuit；The switching circuit includes field-effect tube Q1, field-effect tube Q3, resistance R8, resistance R10, resistance R11；Institute One end of the drain electrode and resistance R11 of stating field-effect tube Q3 is electrically connected with the input terminal of switch module, the field-effect tube Q3 Grid connect with the other end of resistance R11, and connect with the drain electrode of field-effect tube Q1 by resistance R10, the field-effect tube The source electrode of Q3 and the output end of switch module are electrically connected, the source electrode ground connection of the field-effect tube Q1, the grid of field-effect tube Q1 It is electrically connected by resistance R8 and the first energy supply control module.

3. TWS charging bluetooth earphone circuit according to claim 2, it is characterised in that: the protection circuit includes field effect It should pipe Q2, resistance R7, resistance R9, resistance R12, transient supression diode E2, zener diode D2；The transient supression diode The anode of E2 and the cathode of zener diode D2 are electrically connected with the output end of switch module, and transient supression diode E2's is negative The anode of pole and zener diode D2 are grounded；The drain electrode of the field-effect tube Q2 passes through the output of resistance R12 and switch module End is electrically connected, and the source electrode of field-effect tube Q2 ground connection, the grid of field-effect tube Q2 is grounded through resistance R7, and passes through resistance R9 and the One energy supply control module is electrically connected.

4. TWS charging bluetooth earphone circuit according to claim 3, it is characterised in that: first energy supply control module Including signal detection module, the first MCU module, electricity quantity display module；The power end of the signal detection module and the first power supply The output end of module is electrically connected, and the output end of the signal detection module and the first MCU module are electrically connected；The electricity is aobvious Show that module and the first MCU module are electrically connected.

5. TWS charging bluetooth earphone circuit according to claim 4, it is characterised in that: the signal detection module includes Hall switch chip CE1001 and its Hall switch chip CE1001 peripheral circuit.

6. TWS charging bluetooth earphone circuit according to claim 5, it is characterised in that: the sampling output module includes First output end J1, second output terminal J2, resistance R5, resistance R6, resistance R16, resistance R17；The first output end J1 and The anode of two output end J2 is electrically connected with the output end of switch module, and the cathode of the first output end J1 is connect by resistance R6 Ground, and be electrically connected by resistance R5 and the first MCU module, the cathode of second output terminal J2 is grounded by resistance R17, and is passed through R16 and the first MCU module are electrically connected；The first output end J1, second output terminal J2 give junior's circuit to provide power supply respectively Power supply.

7. a kind of TWS Bluetooth earphone circuit, it is characterised in that: including power input, second power supply module, second source control Module, signal processing module, sampling output module；The power input and the input terminal of second source control module electrically connect It connects, the output end and second power supply module input terminal of the second source control module are electrically connected, the second power supply module Output end and signal processing module be electrically connected；The power input, second power supply module, second source control module point It is not electrically connected with signal processing module；The sampling output module includes the first output end J1, second output terminal J2, resistance R5, resistance R6, resistance R16, resistance R17；The cathode of first output end J1 is grounded by resistance R6, the cathode of second output terminal J2 It is grounded by resistance R17；The first output end J1, second output terminal J2 give junior's circuit to provide power supply power supply respectively；It is described Power input and the first output end J1 or second output terminal J2 are electrically connected.

8. TWS Bluetooth earphone circuit according to claim 7, it is characterised in that: the second source control module includes Chip U5, resistance R50, resistance R51, resistance R52, capacitor C52；The chip U5 is equipped with 6 pins, the first pin and the 6th Pin is electrically connected with signal processing module respectively, and second pin ground connection, third pin and signal processing module are electrically connected, and It being grounded by resistance R52, the 4th pin is electrically connected by resistance R50 and power input, and is grounded by resistance R51, the Five pins and the input terminal of second power supply module are electrically connected, and are grounded by capacitor C52.

9. TWS Bluetooth earphone circuit according to claim 8, it is characterised in that: the signal processing module includes second MCU module, Anneta module, speech reception module, sound broadcasting module, signal lamp module, function button module；The antenna mould Block, speech reception module, sound broadcasting module, signal lamp module, function button module end corresponding with the second MCU module respectively Mouth is electrically connected.

10. TWS Bluetooth earphone circuit according to claim 9, it is characterised in that: second MCU module includes chip AB1526P and its chip AB1526P peripheral circuit.