CN111601197A - Device combining sound box and Bluetooth headset - Google Patents

Abstract

The invention discloses a device combining a speaker and a bluetooth earphone, comprising an earphone body and a speaker body, the speaker body is provided with a accommodating cavity to accommodate the earphone body; the earphone body is provided with a Bluetooth chip, a switching unit, an earphone battery, a first playback unit, and a first transmission connector; the speaker body is provided with a charging and voltage regulation management unit speaker battery, a charging interface and a mode control button, a second playback unit, and a second transmission connector; the first transmission The connector is detachably connected with the second transmission connector for charging or audio data transmission; the mode control button is used to control the output voltage of the charging voltage regulation management unit, and the switching unit is used to select the output voltage according to the size of the output voltage. The audio data received by the Bluetooth chip is transmitted to the first playback unit or the second playback unit or does not output audio data and only charges. The present invention enables the product to have both the function of the bluetooth earphone and the function of the bluetooth speaker.

Description

A device combining a speaker and a bluetooth headset

technical field

The present invention relates to the technical field of bluetooth playback equipment, in particular to a device combining a speaker and a bluetooth headset.

Background technique

The working principle of a bluetooth headset or a bluetooth speaker is basically the same. First, the mobile phone or player decodes the music file, and then sends a digital signal to the bluetooth headset or bluetooth speaker through bluetooth. Second, after the bluetooth headset or bluetooth speaker receives the signal, the bluetooth chip It will be transcoded into an analog signal. The analog signal needs an internal amplifier chip in the Bluetooth headset or Bluetooth speaker to amplify the signal. Finally, the sound unit of the Bluetooth headset or Bluetooth speaker receives the amplified signal for playback, and outputs it to our ears. to the music melody.

In the existing market, Bluetooth earphones or Bluetooth speakers are generally used separately, without integrating the earphone and the speaker together, and the product does not have both the earphone function and the speaker function.

Therefore, the existing technology still needs to be improved.

SUMMARY OF THE INVENTION

In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a device combining a speaker and a Bluetooth headset, so that the product has both the function of the Bluetooth headset and the function of the Bluetooth speaker.

To achieve the above object, the present invention has adopted the following technical solutions:

The present invention provides a device combining a speaker and a Bluetooth headset, comprising an earphone body and a speaker body, wherein the speaker body is provided with an accommodating cavity to accommodate the earphone body and charge the earphone body;

the earphone body is provided with a bluetooth chip, a switching unit and an earphone battery electrically connected with the bluetooth chip, a first playback unit electrically connected with the switching unit, and a first transmission connector electrically connected with the earphone battery and the switching unit;

The speaker body is provided with a charging and voltage regulating management unit, a speaker battery, a charging interface and a mode control button electrically connected to the charging and voltage regulating management unit, a second playback unit, and an electrical connection with the charging and voltage regulating management unit and the second playback unit the second transmission connection;

The first transmission connector and the second transmission connector are detachably connected for charging or audio data transmission;

The mode control button is used to control the output voltage of the charging voltage regulation management unit, and the switching unit is used to select and transmit the audio data received by the Bluetooth chip to the first playback unit or the second playback unit or the second playback unit according to the size of the output voltage. Does not output audio data only for charging.

Wherein, the switching unit is provided with a switching MCU, and the model of the switching MCU is WD2216-QFN20.

Wherein, the first playback unit includes a first power amplifier chip electrically connected to the switching MCU, and an earphone speaker electrically connected to the first power amplifier chip;

The second playback unit includes a second power amplifier chip electrically connected to the second transmission connector, and a speaker speaker electrically connected to the second power amplifier chip.

Wherein, the first transmission connector includes a power supply positive and negative transmission terminal and a data transmission terminal, and correspondingly, the second transmission connector includes a power supply positive and negative transmission terminal and a data transmission terminal for connecting with the first transmission respectively. The power supply positive and negative transmission terminals and the data transmission terminals of the component are electrically connected.

Wherein, the first transmission connector is a 4Pin female connector, and correspondingly, the second transmission connector is a 4Pin male connector.

The model of the Bluetooth chip is RDA5856E.

The model of the second power amplifier chip is CS4230E.

The charging and voltage regulating management unit includes a charging management chip that is electrically connected to the speaker battery and the charging interface, a voltage regulating chip that is electrically connected to the charging management chip, and the voltage regulating chip is electrically connected to the mode control button and the second transmission connector. The mode control button controls the output voltage of the voltage regulator chip;

The model of the charging management chip is ETA4054, and the model of the voltage regulating chip is SGM6605.

Wherein, there are two accommodating cavities of the speaker body for accommodating two earphone bodies, and the bottom of each accommodating cavity is provided with a second transmission connector that can be connected to a first transmission connector at the bottom of an earphone body ;

The earphone body is also provided with LED lights and function keys that are electrically connected to the Bluetooth chip.

Wherein, the earphone speaker is set as a moving coil unit and/or a moving iron unit.

The device of the present invention for combining a speaker and a Bluetooth headset is provided with a headset body and a speaker body accommodating the headset body, the headset body is provided with a Bluetooth chip, a switching unit, a first playback unit and a first transmission connector, and the speaker body is provided with a charging regulator A pressure management unit, a mode control button, a second playback unit and a second transmission connector, the first transmission connector and the second transmission connector are detachably connected for charging or audio data transmission between the headphone body and the speaker body; The mode control button adjusts the output voltage of the charging and voltage regulating management unit, and the switching unit chooses to transmit the audio data received by the Bluetooth chip to the first playback unit or the second playback unit according to the size of the output voltage, or only charge the audio data without outputting the audio data. The device of the invention provides audio data to the headphone body or the speaker body through the same Bluetooth chip, and selects the speaker to play or only charges the headphone body through the switching unit, so that the device has the functions of a Bluetooth headset and a Bluetooth speaker at the same time, and has a simple structure and high cost performance. It has the portability and privacy of a Bluetooth headset; it also has the playability, sharing, and high sound quality of a Bluetooth speaker.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

FIG. 1 is an exploded schematic view of the first embodiment of the device combining a speaker and a Bluetooth headset according to the present invention;

2 is a schematic diagram of the circuit principle of the first embodiment of the device combining a speaker and a Bluetooth headset according to the present invention;

3 is a schematic diagram of the circuit connection of the Bluetooth chip of the present invention;

4 is a schematic diagram of the circuit principle of the second embodiment of the device combining a speaker and a Bluetooth headset according to the present invention;

Fig. 5 is the circuit connection schematic diagram of switching MCU of the present invention;

Fig. 6 is the circuit connection schematic diagram of the second playback unit of the present invention;

7 is a schematic diagram of the circuit connection of the first transmission connector and the second transmission connector of the present invention;

8 is a schematic diagram of the circuit connection of the charging interface and the charging management chip of the present invention;

9 is a schematic diagram of the circuit connection of the voltage regulating chip and the mode control button according to the present invention;

Description of reference numbers:

100-Device, 1-Headphone body, 11-Bluetooth chip, 12-Switch unit, 121-Switch MCU, 13-Headphone battery, 14-First playback unit, 141-First power amplifier chip, 142-Headphone speaker, 15- The first transmission connector, 16-LED light, 17-function button, 2-speaker body, 21-accommodating cavity, 22-charging voltage regulation management unit, 221-charging management chip, 222-voltage regulating chip, 23-speaker battery , 24-charging interface, 25-mode control button, 26-second playback unit, 261-second power amplifier chip, 262-speaker speaker, 27-second transmission connector.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In the present invention, unless otherwise expressly specified and limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, "connection" may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, descriptions such as "first", "second", etc. in the present invention are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature.

Please refer to FIG. 1 and FIG. 2 , the present invention proposes a device 100 combining a speaker and a Bluetooth headset, including an earphone body 1 and a speaker body 2 , and the speaker body 2 is provided with a accommodating cavity 21 to accommodate the earphone body 1 and is an earphone Body 1 is charged. Both the earphone body 1 and the speaker body 2 include a casing and circuits and electronic components arranged in the casing.

Specifically, the earphone body 1 is provided with a Bluetooth chip 11, a switching unit 12 and an earphone battery 13 that are electrically connected to the Bluetooth chip 11, a first playback unit 14 that is electrically connected to the switching unit 12, and the earphone battery 13 and the switching unit. 12 Electrically connected first transmission connections 15 . The Bluetooth chip 11 is used for wirelessly receiving audio data sent by electronic devices such as smart phones through Bluetooth and performing codec analog-to-digital conversion of the data. The earphone battery 13 provides power for the Bluetooth chip 11 , the switching unit 12 and the first playback unit 14 .

The speaker body 2 is provided with a charging and voltage regulating management unit 22, a speaker battery 23 electrically connected to the charging and voltage regulating management unit 22, a charging interface 24 and a mode control button 25, a second playback unit 26, and a charging and voltage regulating management unit. 22 and the second transmission connector 27 that is electrically connected to the second playback unit 26 .

The first transmission connector 15 and the second transmission connector 27 are detachably connected for charging or audio data transmission.

The charging and voltage regulating management unit 22 is connected to the external power supply through the charging interface 24 to charge the speaker battery 23, the speaker battery 23 provides power for the second playback unit 26, and the connection between the first transmission connector 15 and the second transmission connector 27 is as follows: The earphone battery 13 is charged.

The mode control button 25 is used to control the output voltage of the charging voltage regulation management unit 22, and the switching unit 12 is used to select and transmit the audio data received by the Bluetooth chip 11 to the first playback unit 14 or according to the magnitude of the output voltage. The second playback unit 26 or does not output audio data and only charges. The charging and voltage regulating management unit 22 not only manages the charging of the speaker battery 23 , but also adjusts the output voltage of the speaker battery 23 to the second transmission connector 27 , the first transmission connector 15 , and the earphone battery 13 . The adjustment of the output voltage is triggered by the mode control button 25 . That is, after the mode control button 25 is pressed, the output voltage of the charging and voltage regulating management unit 22 will change.

The switching unit 12 detects the output voltage of the charging and voltage regulating management unit 22 to select whether to output the audio data of the Bluetooth chip 11 to the first playback unit 14 of the headphone body 1 for playback or to the second playback unit 26 of the speaker body 2 for playback. Play, or choose not to output audio data and simply charge the earphone battery 13 .

Since the first transmission connector 15 is detachably connected to the second transmission connector 27 , as an embodiment, the switching unit 12 can detect the input voltage of the first transmission connector 15 on the earphone body 1 , that is, the charging is obtained. The magnitude of the output voltage of the voltage regulation management unit 22 .

If it is detected that the input voltage of the first transmission connector 15 is 0V, it means that the first transmission connector 15 is disconnected from the second transmission connector 27, and the headphone body 1 is taken out from the speaker body 2. At this time, the switching unit 12 will The audio data of the Bluetooth chip 11 is sent to the first playback unit 14 of the headphone body 1 for playback.

When it is detected that the input voltage of the first transmission connector 15 is in the range of 3.6V to 4.2V, it means that the first transmission connector 15 and the second transmission connector 27 are connected at this time, and the headphone body 1 is placed on the speaker body 2 and the voltage at this time is the normal working voltage of the Bluetooth chip 11. At this time, the switching unit 12 sends the audio data of the Bluetooth chip 11 to the second playback unit 26 of the speaker body 2 for playback.

When it is detected that the input voltage of the first transmission connector 15 is 5V, it means that the first transmission connector 15 and the second transmission connector 27 are connected at this time, the headphone body 1 is placed in the speaker body 2, and at this time The voltage is the charging voltage of the earphone battery 13. At this time, the switching unit 12 does not output the audio data of the Bluetooth chip 11, but only outputs the power of the speaker battery 23 to the earphone body 1 through the second transmission connector 27 and the first transmission connector 15. The earphone battery 13 is charged.

The device 100 of the present invention realizes the control of audio data playback and charging control through the Bluetooth chip 11 and the switching unit 12 on the headphone body 1, and the speaker body 2 does not need to be provided with a Bluetooth chip and a control chip. Compared with separate Bluetooth headsets and Bluetooth speakers, it saves circuit configuration and is more cost-effective. At the same time, since the device 100 of the present invention is provided with the first playback unit 14 and the second playback unit 26 on the headphone body 1 and the speaker body 2, respectively, the device has both the function of a Bluetooth headset and the function of a Bluetooth speaker. , expand the function of the product, improve the scope of application of the product.

Specifically, as shown in FIG. 3 , the model of the Bluetooth chip 11 in the embodiment of the present invention is RDA5856E. The Bluetooth chip RDA5856E has 24 pins. It is a high-performance and highly integrated multimedia Bluetooth chip. It integrates baseband, Bluetooth transceiver, and power management into a system chip, which is professionally used in Bluetooth music and audio applications. Suitable for bluetooth speakers, bluetooth music boxes, bluetooth earphones, etc.

Preferably, as shown in FIG. 4 and FIG. 5 , the switching unit 12 in the embodiment of the present invention is provided with a switching MCU121, and the model of the switching MCU121 is WD2216-QFN20. That is, the switching unit 12 of this embodiment is accurately controlled by a single-chip microcomputer. On the one hand, the switching MCU 121 detects the voltage output by the charging and voltage-regulating management unit 22 to the first transmission connector 15, and on the other hand, selectively outputs the voltage through different output pins. The audio data sent by the Bluetooth chip 11 is sent to the first playback unit 14 of the headphone body 1 or the second playback unit 26 of the speaker body 2 . When charging the earphone battery 13, the output pin of the MCU 121 is switched to not output audio.

Both the WD2216-QFN20 chip and the RDA5856E chip are powered by the earphone battery 13, and the power output end of the earphone battery 13 is connected to the VBAT pin of the WD2216-QFN20 chip and the RDA5856E chip.

Further, as shown in FIG. 4 , the first playback unit 14 includes a first power amplifier chip 141 that is electrically connected to the switching MCU 121 , and an earphone speaker 142 that is electrically connected to the first power amplifier chip 141 .

The second playback unit 26 includes a second power amplifier chip 261 that is electrically connected to the second transmission connector 27 , and a speaker speaker 262 that is electrically connected to the second power amplifier chip 261 .

The first power amplifier chip 141 and the second power amplifier chip 261 respectively power-amplify the audio data sent by the Bluetooth chip 11 to the switching MCU 121 to drive the headphone speaker 142 and the speaker speaker 262 for playback. The headphone body 1 and the speaker body 2 use independent The power amplifier chip enables the device 100 of the present invention to obtain good sound quality regardless of whether the audio is played through an earphone speaker or a speaker speaker.

Preferably, the model of the second power amplifier chip 261 in the embodiment of the present invention is CS4230E. FIG. 6 shows the circuit of the second playback unit 26 according to the embodiment of the present invention. In this circuit, the INN(10) and INP(9) pins of the second power amplifier chip CS4230E are connected to the data transmission terminals of the second transmission connector 27 , to receive the DAC_N and DAC_P differential audio signals from the switching MCU outputs. The OUTN(15) and OUTP(12) pins of CS4230E are connected to the speaker speaker 262.

Preferably, the earphone speaker 142 in the embodiment of the present invention is configured as a moving coil unit and/or a moving iron unit. In this way, the earphone body 1 can further provide high-quality sound quality.

As shown in FIG. 7 , the first transmission connector 15 in the embodiment of the present invention includes power supply positive and negative transmission terminals and data transmission terminals. Correspondingly, the second transmission connector 27 includes power supply positive and negative transmission terminals and data transmission terminals. The terminals are respectively used for electrical connection with the positive and negative power transmission terminals and the data transmission terminals of the first transmission connector 15 . The positive and negative transmission terminals of the power supply are used to transmit electrical energy for charging, while the data transmission terminals are used to transmit audio data. The first transmission connector 15 and the second transmission connector 27 may be in the form of a plug connector, an interface, a conductive pin or the like.

As an embodiment, referring to FIGS. 1 and 7 , the first transmission connector 15 in the embodiment of the present invention is a 4Pin female connector, and correspondingly, the second transmission connector 27 is a 4Pin male connector. When the earphone body 1 is placed in the accommodating cavity 21 of the speaker body 2, the 4Pin female connector of the earphone body 1 contacts and communicates with the 4Pin male connector of the speaker body 2 for charging and data transmission.

As shown in FIG. 8 and FIG. 9 , the charging and voltage regulating management unit 22 of the present invention includes a charging management chip 221 that is electrically connected to the speaker battery 23 and the charging interface 24 , and a voltage regulating chip 222 that is electrically connected to the charging management chip 221 . The chip 222 is electrically connected to the mode control button 25 and the second transmission connector 27. The mode control button 25 controls the output voltage of the voltage regulating chip 222; the model of the charging management chip 221 is ETA4054, and the model of the voltage regulating chip 222 is ETA4054. for SGM6605.

The external power supply inputs power through the charging interface 24 to the VCC pin of the charging management chip ETA4054. The chip ETA4054 protects the input power from overload, short circuit and other charging protection, and outputs 3.6V~4.2V power through the BAT pin to the BAT1+ terminal, the BAT1+ terminal Connect the speaker battery 23, and connect the BAT1+ terminal to the VCC pin and SW pin of the voltage regulator chip SGM6605. The voltage regulator chip SGM6605 boosts the 3.6V~4.2V voltage input from the BAT1+ terminal to 5V and outputs it from the VOUT pin to the OUT+ output terminal through the diode D4. C10 and C22 play a filtering role. The VCC pin of the voltage regulator chip SGM6605 is connected in parallel with the mode control button S5 at the position where it is connected to the BAT1+ terminal. S5 is connected to the OUT+ output terminal in series with the resistor R26 and the diode D5, so that when the mode control button S5 is pressed, the speaker battery is turned on. The 3.6V-4.2V power of 23 is directly output to the second transmission connector 27 through BAT1+, S5, R26, D5, and OUT+, which does not undergo boost processing by the voltage regulator chip SGM6605. At this time, if the first transmission connector 15 is connected to the second transmission connector 27 , the input voltage detected by the switching MCU 121 on the first transmission connector 15 is 3.6V-4.2V, and when the MCU 121 is switched, the audio frequency of the Bluetooth chip 11 is switched. It is transmitted to the speaker body 2 for playback.

When the mode control button S5 is lifted, that is, when S5 is not turned on, the 3.6V~4.2V power of the speaker battery 23 passes through BAT1+, enters the VCC pin of the voltage regulator chip SGM6605S5, and is boosted to 5V by the voltage regulator chip SGM6605S5. After D4, OUT+ is output to the second transmission connector 27. At this time, if the first transmission connector 15 is connected to the second transmission connector 27, the input voltage detected by the switching MCU 121 at the first transmission connector 15 is 5V, When the MCU 121 is switched, the audio of the Bluetooth chip 11 is not output, and the earphone battery 13 is directly charged.

Preferably, there are two accommodating cavities 21 of the speaker body 2 in the embodiment of the present invention for accommodating two earphone bodies 1 , and a second transmission connector 27 is provided at the bottom of each accommodating cavity 21 to connect with an earphone The first transmission connector 15 at the bottom of the body 1 is connected. In this way, the earphone body 1 of this embodiment can be set as a TWS earphone, which further improves the sound quality played by the earphone body 1 .

The earphone body 1 of the embodiment of the present invention is further provided with an LED light 16 and a function button 17 to be electrically connected to the Bluetooth chip 11 . The LED light 16 sends a prompt signal, and the function button 17 is used to control the headphone body 1 , such as on/off of the headphone body, volume adjustment, and the like.

The device 100 of the present invention is divided into three modes:

1. Headphone mode:

At this time, the earphone body is taken out from the speaker body, the first transmission connector is disconnected from the second transmission connector, and the input voltage obtained by the first transmission connector from the second transmission connector is zero, that is, the charging and voltage regulation management unit sends to the first transmission connector. The output voltage of a transmission connector is zero, at this time it is the headphone mode, and the audio is transmitted to the headphone speaker for playback.

The headset mode has the same function as the ordinary Bluetooth headset, and can perform normal operations such as listening to songs and making calls.

2. Speaker mode:

The headphone body is put into the speaker body, the first transmission connector is connected to the second transmission connector, press the mode control button on the speaker body, the output of the second transmission connector to the first transmission connector is 3.6~4.2 V, at this time it is the speaker mode, and the audio is transmitted to the speaker speaker for playback. In this mode, the Bluetooth chip calls the battery in the speaker body to ensure sufficient power supply, and calls the high-quality speaker speakers in the speaker body to ensure the sound quality of the speaker body when playing.

3. Charging mode:

The headphone body is put into the speaker body, the first transmission connector is connected to the second transmission connector, the mode control button on the speaker body is lifted, and the output from the second transmission connector to the first transmission connector is 5V. When it is in charging mode, the Bluetooth chip does not output audio. In this mode, the earphone battery of the earphone body enters the charging mode, so that the speaker battery of the speaker body charges the earphone battery of the earphone body, increasing the battery life of the earphone.

The device 100 of the present invention combines a Bluetooth headset and a Bluetooth speaker, so that the device 100 has the functions of a Bluetooth headset and a Bluetooth speaker at the same time, not only has the portability and privacy of the Bluetooth headset; sound quality.

The device 100 for combining a speaker and a Bluetooth headset proposed in the embodiment of the present invention is provided with a headset body 1 and a speaker body 2 accommodating the headset body 1. The headset body 1 is provided with a Bluetooth chip 11, a switching unit 12, a first playback unit 14 and a first playback unit 14. A transmission connector 15. The speaker body 2 is provided with a charging and voltage regulation management unit 22, a mode control button 25, a second playback unit 26 and a second transmission connector 27. The first transmission connector 15 and the second transmission connector 27 can be connected to each other. The detachable connection is used for charging or audio data transmission between the headphone body 1 and the speaker body 2; the mode control button 25 adjusts the output voltage of the charging and voltage regulating management unit 22, and the switching unit 12 selects the Bluetooth chip 11 according to the size of the output voltage. The received audio data is transmitted to the first playback unit 14 or the second playback unit 26 or does not output audio data and only charges, so that the device 100 of the present invention provides audio data to the headphone body 1 or the speaker body 2 through the same Bluetooth chip 11, and passes The switching unit 12 selects to use the headphone body 1 to play audio or the speaker body 2 to play the speaker or to charge the headphone body only, so that the device 100 has the functions of both a Bluetooth headset and a Bluetooth speaker, with a simple structure and high cost performance.

The above is only an example to clearly illustrate the present invention, and is not intended to limit the scope of the present invention. It is impossible to list all the embodiments here. Under the concept of the present invention, the content of the technical solution of the present invention is used. Equivalent structural transformations made, or direct/indirect applications in other related technical fields are all included in the scope of patent protection of the present invention.

Claims (10)

1. A device combining a sound box and a Bluetooth headset comprises a headset body and a sound box body, and is characterized in that the sound box body is provided with an accommodating cavity for accommodating the headset body and charging the headset body;

the earphone body is provided with a Bluetooth chip, a switching unit and an earphone battery which are electrically connected with the Bluetooth chip, a first playing unit which is electrically connected with the switching unit, and a first transmission connecting piece which is electrically connected with the earphone battery and the switching unit;

the loudspeaker box body is provided with a charging voltage regulation management unit, a loudspeaker box battery, a charging interface and a mode control key which are electrically connected with the charging voltage regulation management unit, a second playing unit and a second transmission connecting piece which is electrically connected with the charging voltage regulation management unit and the second playing unit;

the first transmission connecting piece and the second transmission connecting piece are detachably connected and used for charging or audio data transmission;

the mode control key is used for controlling the output voltage of the charging voltage regulation management unit, and the switching unit is used for selecting to transmit the audio data received by the Bluetooth chip to the first playing unit or the second playing unit or not to output the audio data and only charge the audio data according to the size of the output voltage.

2. The device of claim 1, wherein the switching unit is provided with a switching MCU of type WD2216-QFN 20.

3. The device of claim 2, wherein the first playing unit comprises a first power amplifier chip electrically connected to the switching MCU, and an earphone speaker electrically connected to the first power amplifier chip;

the second playing unit comprises a second power amplifier chip electrically connected with the second transmission connecting piece and a loudspeaker box electrically connected with the second power amplifier chip.

4. The device as claimed in claim 1, wherein the first transmission connector comprises a positive and negative power transmission terminal and a data transmission terminal, and the second transmission connector comprises a positive and negative power transmission terminal and a data transmission terminal for electrically connecting to the positive and negative power transmission terminal and the data transmission terminal of the first transmission connector, respectively.

5. The device of claim 4, wherein the first transmission connector is a 4Pin female connector, and correspondingly, the second transmission connector is a 4Pin male connector.

6. The device of claim 1, wherein the bluetooth chip model is RDA 5856E.

7. The device of claim 1, wherein the second power amplifier chip is of a type CS 4230E.

8. The device of claim 1, wherein the charging and voltage-regulating management unit comprises a charging management chip electrically connected to a battery of the speaker and the charging interface, and a voltage-regulating chip electrically connected to the charging management chip, the voltage-regulating chip being electrically connected to the mode control button and the second transmission connector, the mode control button controlling the output voltage of the voltage-regulating chip;

the model of the charging management chip is ETA4054, and the model of the voltage regulating chip is SGM 6605.

9. The device of claim 1, wherein the two accommodating cavities of the speaker body are used for accommodating two earphone bodies, and a second transmission connecting part is disposed at the bottom of each accommodating cavity and can be connected with a first transmission connecting part at the bottom of an earphone body;

the earphone body is further provided with an LED lamp and a function button which are electrically connected with the Bluetooth chip.

10. The device of claim 3, wherein the earphone speaker is configured as a moving coil unit and/or a moving iron unit.

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