A wireless earphone and a circuit thereof, a wireless earphone assembly

Abstract

The application relates to a wireless earphone and a circuit and an assembly thereof. The circuit comprises a battery and a charging management unit, one end of the battery is coupled to a ground terminal, and the other end is coupled to the charging management unit; a communication unit is coupled to a first node to establish a wired communication connection with a charging box when the first node is coupled to the charging box; a first switch device is coupled to the first node at one end and to a second node at the other end; a capacitor is coupled to the ground terminal at one end and to the second node at the other end; the charging management unit is coupled to the second node; when the first node is coupled to the charging box, if charging management of the battery is needed, the first switch device is closed, and the capacitor can stabilize the working state of the charging management unit; the speed of the wired communication between the communication unit and the charging box when the first switch device is open is greater than the speed of the wired communication between the communication unit and the charging box when the first switch device is closed. Thus, two modes of low-speed communication and high-speed communication can be realized, and user demands can be better met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of earphones, and particularly relates to a wireless earphone and a circuit thereof and a wireless earphone assembly. BACKGROUND

[0002] Compared with wired earphones, wireless earphones have the advantage of convenient carrying, and therefore are more and more welcomed by people. The wireless earphones can be true wireless stereo (TWS) earphones. With the intelligentization of a TWS earphone charging box, it is increasingly required to establish a communication connection between the TWS earphones and the charging box in the use process.

[0003] When wireless communication is used to transmit information between the TWS earphones and the charging box, a wireless communication module needs to be added in the earphones and the charging box respectively, so that the design cost is high. If wired communication is used to transmit information, the cost of the charging box can be reduced, but due to the structural limitation of the earphone circuit, the wired communication speed is slow. When more data information needs to be transmitted, such as a software program used for upgrading the earphones, more time will be spent, which leads to an increase in the cost of writing the program in the production process (the production cost is proportional to the operation time), and it is not conducive to improving the user experience to spend more time writing the program in the process of using the product by the user. SUMMARY

[0004] The present application aims to overcome the above technical problems, and provides a wireless earphone and a circuit thereof and a wireless earphone assembly, which can stop charging management of a battery when more data information needs to be transmitted, so as to realize high-speed communication, and can perform low-speed communication while charging management of the battery is performed when less data information needs to be transmitted, so as to better meet the user demand.

[0005] In order to achieve the above object, the application provides a wireless earphone circuit, which comprises: a battery and a charging management unit, one end of the battery is coupled to a ground terminal, and the other end is coupled to the charging management unit so that the charging management unit manages charging of the battery; a communication unit coupled to a first node so as to establish a wired communication connection with a charging box when the first node is coupled to the charging box; a first switch device, one end of which is coupled to the first node, and the other end is coupled to a second node; a capacitor, one end of which is coupled to the ground terminal, and the other end is coupled to the second node; wherein the first input end of the charging management unit is coupled to the second node; when the first node is coupled to the charging box, if the battery needs to be managed for charging, the first switch device is closed so that the capacitor can stabilize the working state of the charging management unit; if the battery does not need to be managed for charging, the first switch device is opened; the speed of wired communication between the communication unit and the charging box when the first switch device is opened is greater than the speed of wired communication between the communication unit and the charging box when the first switch device is closed.

[0006] Optionally, the first switch device, the battery, the charging management unit and the communication unit are arranged on a chip; the chip has a first pin coupled to the first node, a second pin coupled to the second node and a ground pin coupled to the ground terminal; one end of the capacitor is coupled to the ground pin, and the other end is coupled to the second pin.

[0007] Optionally, the charging management unit comprises a control module and a second switch device, one end of the second switch device is coupled to the first node and the other end is coupled to the battery, the first input end of the control module is coupled to the second node, the second input end of the control module is used to receive a control instruction sent by the communication unit, the signal output end of the control module is coupled to the second switch device, the control module generates a control signal after receiving the control instruction, and outputs the control signal to the second switch device through the signal output end, so as to control the second switch device to perform or stop performing charging management.

[0008] Optionally, the second switch device comprises a PMOS transistor, a gate of the PMOS transistor is coupled with a signal output end of the control module, a source of the PMOS transistor is coupled with the first node, a drain of the PMOS transistor is coupled with the battery, the control module controls the size of the gate voltage through the control signal to adjust the voltage difference between the source and the gate, so as to control the size of the charging current and realize charging management; or, the second switch device comprises an NMOS transistor, a gate of the NMOS transistor is coupled with a signal output end of the control module, a drain of the NMOS transistor is coupled with the first node, a source of the NMOS transistor is coupled with the battery, the control module controls the size of the gate voltage through the control signal to adjust the voltage difference between the source and the gate, so as to control the size of the charging current and realize charging management.

[0009] Optionally, the communication unit controls the closing or opening of the first switch device and controls the charging management unit to perform or stop charging management on the battery.

[0010] Optionally, when the first switch device is closed, the communication unit controls the first switch device to be opened after receiving the data transmission instruction sent by the charging case, and controls the charging management unit to stop charging management on the battery; the communication unit performs wired communication with the charging case to transmit data in the case that the first switch device is opened, and after the data transmission is completed, the communication unit receives the data transmission completion instruction sent by the charging case to control the first switch device to be closed and control the charging management unit to continue charging management.

[0011] Optionally, the communication unit controls the closing or opening of the first switch device and controls the charging management unit to perform or stop charging management on the battery by simultaneously sending control instructions to the first switch device and the charging management unit; or, the communication unit controls the closing or opening of the first switch device and controls the charging management unit to perform or stop charging management on the battery by sending control instructions to the first switch device and the charging management unit respectively.

[0012] Optionally, when the first switch device is closed, the communication unit transmits first data information with the charging case through the wired communication connection, the first data information comprises the power of the battery of the charging case and / or the switch state of the case cover of the charging case; and / or, when the first switch device is opened, the communication unit transmits second data information with the charging case through the wired communication connection, the second data information comprises an upgrade program for upgrading the earphone.

[0013] The second aspect of the present application provides a wireless earphone, which comprises the wireless earphone circuit of the first aspect.

[0014] The third aspect of the present application provides a wireless earphone assembly, which comprises the charging box and the wireless earphone provided by the second aspect.

[0015] In the above scheme, both low-speed communication and high-speed communication modes can be realized, which can better meet the user's needs. Specifically, when the wireless earphone circuit is coupled with the charging box, if more data information needs to be transmitted, such as the charging box needs to write program software for upgrading the wireless earphone into the wireless earphone, the first switching device can be disconnected, and the charging management unit can stop charging management of the battery, so as to avoid the influence of the capacitor on the communication speed, and realize high-speed communication; when less data information needs to be transmitted, the first switching device can be closed and the charging management unit can perform charging management on the battery, and low-speed communication can be performed, that is, a small amount of data information can be transmitted while charging the battery.

[0016] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a structural schematic diagram of a wireless earphone circuit.

[0019] Figure 2 It is a structural schematic diagram of a wireless earphone circuit provided by the embodiment of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] When the TWS earphone and the charging box adopt a wireless communication mode to transmit information, a wireless communication module needs to be added in the earphone and the charging box respectively, which makes the design cost higher. Using wired communication to transmit information can reduce the cost of the charging box. However, due to the unreasonable circuit structure design of the existing wireless earphone, the wired communication speed is low.

[0022] Figure 1 Figure 1 is a schematic diagram of the structure of a wireless headset circuit. Figure 1 As shown, the dashed box represents the internal circuitry of the headphone chip, including the battery BAT1, the charging management circuit Charger CTRL, the communication module Comm, the analog-to-digital converter ADC, the application processor AP, the memory Mem, the radio frequency circuit RF, and the audio circuit Audio. The charging management circuit Charger CTRL uses the VCHG voltage as input to manage the charging of the battery BAT1. The analog-to-digital converter ADC samples the voltage of the battery BAT1, which indicates the remaining charge of the battery BAT1. The radio frequency circuit RF is used to communicate with terminal devices such as mobile phones. The application processor AP implements various control functions and can run software. The memory Mem is used to store various information and cooperate with the application processor AP. The communication module Comm implements communication functions, receiving communication information from VCHG and outputting it to the application processor AP. The audio circuit Audio implements sound input (sound acquisition) and output (sound playback).

[0023] Since some circuits in the headset require input capacitance for stable operation, such as the charging management circuit Charger CTRL, this input capacitance will limit the communication speed. Figure 1 As shown, the wireless headset circuit also includes capacitor C1, typically located on a printed circuit board. This capacitor is required by the charge management circuit Charger CTRL. A larger capacitance value for C1 results in a lower wired communication speed. In one example, C1's capacitance value is typically greater than or equal to 10nF. The charging or discharging time of this capacitor limits the communication speed between the communication module Comm and the charging case.

[0024] That is to say, the wired communication speed in the existing technology is slow. When producing TWS earphones and charging boxes, manufacturers need to upgrade the software. They can write programs to the charging box and TWS earphones through the data cable. At this time, the charging box also needs to write the program to the TWS earphones through this wired communication. If the communication speed is slow, it will take a long time to write the program, resulting in increased production costs. In addition, when the user uses the product, such as when transmitting the earphone upgrade program to the wireless earphones through the charging box, it takes a long time to write the program, which is not conducive to improving the user experience.

[0025] In view of this, the embodiments of the present application provide a wireless headset and its circuit, a charging box and its circuit, and a wireless headset component. When more data information needs to be transmitted, the battery charging management can be stopped to achieve high-speed communication. When less data information needs to be transmitted, low-speed communication can be performed while the battery charging management is being performed, which can better meet user needs.

[0026] Figure 2 The structure schematic diagram of the wireless earphone circuit provided by the embodiment of the present application is shown in the figure. Figure 2 As shown in the figure, the wireless earphone circuit comprises a battery BAT1, a charging management unit 10, a communication unit 20, a first switching device S1 and a capacitor C1. One end of the battery BAT1 is coupled to a ground terminal, and the other end is coupled to the charging management unit 10, so that the charging management unit 10 performs charging management on the battery BAT1. The communication unit 20 is coupled to a first node VCHG1, so that when the first node VCHG1 is coupled to a charging box, a wired communication connection is established between the communication unit 20 and the charging box; one end of the first switching device S1 is coupled to the first node VCHG1, and the other end is coupled to a second node VCHG2. One end of the capacitor C1 is coupled to the ground terminal, and the other end is coupled to the second node VCHG2.

[0027] The first input end of the charging management unit 10 is coupled to the second node VCHG2, and the first input end of the charging management unit 10 is a power input end thereof; when the first node VCHG1 is coupled to the charging box, if the charging management unit 10 needs to perform charging management on the battery BAT1, the first switching device S1 is closed, so that the capacitor C1 can stabilize the working state of the charging management unit 10; if the charging management unit 10 does not need to perform charging management on the battery BAT1, the first switching device S1 is opened; the speed of wired communication between the communication unit 20 and the charging box when the first switching device S1 is opened is greater than the speed of wired communication between the communication unit 20 and the charging box when the first switching device S1 is closed.

[0028] That is, when the first switching device S1 is opened, the communication unit 20 and the charging box can perform high-speed communication to realize transmission of more data information in a short time. In an example, when the first switching device S1 is opened, the communication unit 20 and the charging box transmit second data information through the wired communication connection, and the second data information can include an upgrade program for upgrading the earphone. When the first switching device S1 is closed, the communication unit 20 and the charging box can perform low-speed communication to realize transmission of less data information while performing charging management on the battery BAT1. In an example, when the first switching device S1 is closed, the communication unit 20 and the charging box transmit first data information through the wired communication connection, and the first data information can include the battery level of the battery BAT1 of the charging box and / or the switch state of the cover of the charging box. It can be understood that the first data information and the second data information can also include other types of information, which can be designed according to actual working needs.

[0029] That is, in the above scheme, both low-speed communication and high-speed communication modes can be realized, and user demand can be better met. Specifically, when the wireless earphone circuit is coupled with the charging box, if more data information needs to be transmitted, such as the charging box needs to write program software for upgrading the wireless earphone into the wireless earphone, the first switching device S1 can be disconnected, and the charging management unit 10 can stop charging management of the battery BAT1, so as to avoid the influence of the capacitor C1 on the communication speed, and realize high-speed communication; and when less data information needs to be transmitted, the first switching device S1 can be closed and the charging management unit 10 can keep charging management of the battery BAT1, and low-speed communication can be performed, that is, a small amount of data information can be transmitted while the battery BAT1 is being charged.

[0030] As shown in Figure 2 , the wireless earphone circuit can further include an analog-to-digital converter ADC, a radio frequency circuit RF, an audio circuit Audio, an application processor AP, and a memory Mem. Among them, the analog-to-digital converter ADC is used to collect the voltage of the battery BAT1, which identifies the remaining power of the battery BAT1. The radio frequency circuit RF is used for communication with terminal devices such as mobile phones. The application processor AP has the function of realizing various control functions and can run software. The memory Mem is used to store various information and works with the application processor AP. The communication unit 20 can output the information received from the VCHG to the application processor AP. The audio circuit Audio realizes the functions of sound input (collecting sound) and sound output (playing sound). It can be understood that other functional units can also be added in the wireless earphone circuit as needed.

[0031] In addition, in order to facilitate the installation of the wireless earphone circuit in the shell of the wireless earphone, the first switching device S1, the battery BAT1, the charging management unit 10 and the communication unit 20 can be arranged on a chip, Figure 2 indicated by the dashed box in the middle can be a chip. As shown in Figure 2 , the chip can have a first pin VCHG coupled with the first node VCHG1, a second pin coupled with the second node VCHG2, and a ground pin GND coupled with the ground. One end of the capacitor C1 is coupled with the ground pin GND, and the other end is coupled with the second pin. That is, since the volume of the capacitor C1 is generally relatively large, the capacitor C1 can be arranged outside the chip, such as on a printed circuit board.

[0032] Further, the charging management unit 10 can include a control module 11 and a second switching device S2, one end of the second switching device S2 being coupled with the first node VCHG1 and the other end being coupled with the battery BAT1, a first input end of the control module 11 being coupled with the second node VCHG2, a second input end of the control module 11 being used to receive a control instruction sent by the communication unit 20, a signal output end of the control module 11 being coupled with the second switching device S2, the control module 11 being capable of generating a control signal after receiving the control instruction and outputting the control signal to the second switching device S2 through the signal output end to control the second switching device S2 to perform or stop performing charging management. Since the capacitor C1 will limit the communication speed, when high-speed communication is required between the communication unit 20 and the charging box, the first switching device S1 can be disconnected to prevent the capacitor C1 from affecting the communication speed. However, in order to ensure that the control module 11 can work stably, the control module 11 needs to be connected with the capacitor C1. The second switching device S2 can have but is not limited to the following two schemes:

[0033] The first scheme: the second switching device S2 includes a PMOS transistor, the gate of the PMOS transistor being coupled with the signal output end of the control module 11, the source of the PMOS transistor being coupled with the first node VCHG1, and the drain of the PMOS transistor being coupled with the battery BAT1, the control module 11 controlling the size of the gate voltage through the control signal to adjust the voltage difference between the source and the gate to control the size of the charging current and achieve charging management.

[0034] The second scheme: the second switching device S2 includes an NMOS transistor, the gate of the NMOS transistor being coupled with the signal output end of the control module 11, and the drain of the NMOS transistor being coupled with the first node VCHG1, the source of the NMOS transistor being coupled with the battery BAT1, the control module 11 controlling the size of the gate voltage through the control signal to adjust the voltage difference between the source and the gate to control the size of the charging current and achieve charging management.

[0035] Specifically, in the above two schemes, the control module 11 can control the size of the charging current by controlling the gate of the PMOS transistor or the NMOS transistor. The lower the gate voltage of the PMOS transistor or the NMOS transistor, the greater the difference between the source voltage and the gate voltage, and the greater the charging current that can be provided. When the difference between the source voltage and the gate voltage is equal to zero, the charging current is zero.

[0036] In addition, the communication unit 20 can control the closing or opening of the first switching device S1 and control the charging management unit 10 to perform or stop performing the charging management on the battery BAT1. For example, when the first switching device S1 is closed, after the communication unit 20 receives the data transmission instruction sent by the charging case, the communication unit 20 controls the first switching device S1 to be opened and controls the charging management unit 10 to stop performing the charging management on the battery BAT1; the communication unit 20 performs wired communication with the charging case to transmit data when the first switching device S1 is opened, and after the data transmission is completed, the communication unit 20 receives the data transmission completion instruction sent by the charging case to control the first switching device S1 to be closed and control the charging management unit 10 to continue performing the charging management.

[0037] In addition, the communication unit 20 controls the first switching device S1 and the charging management unit 10 can have but not limited to the following two ways:

[0038] The first way is that the communication unit 20 controls the closing or opening of the first switching device S1 and controls the charging management unit 10 to perform or stop performing the charging management on the battery BAT1 by sending control instructions to the first switching device S1 and the charging management unit 10 at the same time.

[0039] The second way is that the communication unit 20 controls the closing or opening of the first switching device S1 and controls the charging management unit 10 to perform or stop performing the charging management on the battery BAT1 by sending control instructions to the first switching device S1 and the charging management unit 10 respectively.

[0040] When the communication unit 20 sends a control instruction to the charging management unit 10, the control instruction can be sent to the control module 11 of the charging management unit 10. After receiving the control instruction, the control module 11 can generate a control signal and send the control signal to the second switching device S1 of the charging management unit 10.

[0041] In addition, the present application also provides a wireless earphone, which comprises the wireless earphone circuit described above. Further, the present application also provides a wireless earphone assembly, which comprises a charging case and the wireless earphone described above. In the wireless earphone assembly, the communication unit of the wireless earphone and the charging case can perform high-speed wired communication, and software program information can be transmitted to the TWS earphone more quickly.

[0042] In summary, Figure 2 The wireless earphone circuit shown in the present application has the following differences compared with the wireless earphone circuit shown in the prior art: Figure 1

[0043] In the present application, Figure 2 ​In the embodiment, the chip has three pins: a first pin VCHG connected with the first node VCHG1, a second pin connected with the second node VCHG2, and a ground pin GND connected with the ground terminal of the battery BAT1. In the embodiment, the chip has only two pins: the VCHG pin and the GND pin. Figure 1

[0044] Further, in the embodiment, the capacitor C1 is connected between the second pin and the ground pin GND, one end of the switch device S1 is connected with the first node VCHG1, and the other end is connected with the second node VCHG2. The switch device S1 is controlled by the communication unit 20. Figure 2

[0045] The charging management unit 10 can include a control module 11 and a switch device S2, which can be a PMOS transistor or an NMOS transistor, and is a power device controlled by the control module 11. The switch device S1 and the control module 11 can receive the control signal Cen sent by the communication unit 20 to perform corresponding actions, to realize low-speed communication or high-speed communication. Specifically:

[0046] In the low-speed communication mode, the switch device S1 is in the on state, and the control module 11 can maintain stability through the capacitor C1 when working. At this time, if the terminal device such as a mobile phone sends information to the communication unit 20 through VCHG to inform the following high-speed communication mode, the communication unit 20 can send a control signal Cen such as a low level to control the switch device S1 to be off, and at the same time control the control module 11 to stop the charging function.

[0047] In the high-speed communication mode, the switch device S1 is off, so that the capacitor C1 does not affect the communication speed, and the charging box can send the upgrade software to the wireless earphone through VCHG. When the upgrade software is sent, the communication unit 20 can be informed to enter the low-speed communication mode, and the communication unit 20 can send a control signal Cen such as a high level to control the switch device S1 to be on, and control the control module 11 to work, to realize the charging function of the battery BAT1.

[0048] Those skilled in the art should further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in the present text can be realized in electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in the above description in general terms. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0049] ​​The above detailed description of the specific embodiments of the present application has been given to understand the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wireless earphone circuit, characterized by, The application relates to a wireless earphone circuit. The wireless earphone circuit comprises a battery and a charging management unit, one end of the battery is coupled to a ground terminal, and the other end is coupled to the charging management unit so that the charging management unit manages charging of the battery; a communication unit is coupled to a first node so as to establish a wired communication connection between the communication unit and a charging box when the first node is coupled to the charging box; a first switch device is coupled to the first node at one end and coupled to a second node at the other end, and the first switch device is controlled by the communication unit; a capacitor is coupled to the ground terminal at one end and coupled to the second node at the other end; wherein a first input end of the charging management unit is coupled to the second node; when the first node is coupled to the charging box, if charging management of the battery is required, the first switch device is closed so that the capacitor can stabilize the working state of the charging management unit; if charging management of the battery is not required, the first switch device is opened; the speed of wired communication between the communication unit and the charging box when the first switch device is opened is greater than the speed of wired communication between the communication unit and the charging box when the first switch device is closed; the charging management unit comprises a control module and a second switch device, one end of the second switch device is coupled to the first node and the other end is coupled to the battery, a first input end of the control module is coupled to the second node, a second input end of the control module is used for receiving a control instruction sent by the communication unit, a signal output end of the control module is coupled to the second switch device, the control module generates a control signal after receiving the control instruction and outputs the control signal to the second switch device through the signal output end so as to control the second switch device to perform or stop performing charging management. The first switch device, the battery, the charging management unit and the communication unit are arranged on a chip; The chip has a first pin coupled to the first node, a second pin coupled to the second node and a ground pin coupled to the ground terminal; One end of the capacitor is coupled to the ground pin and the other end is coupled to the second pin.

3. The wireless earphone circuit according to claim 1, wherein the second switch device comprises a PMOS transistor, a gate of the PMOS transistor is coupled to the signal output end of the control module, a source of the PMOS transistor is coupled to the first node, a drain of the PMOS transistor is coupled to the battery, the control module controls the size of the gate voltage through the control signal to adjust the voltage difference between the source and the gate, so as to control the size of the charging current and realize charging management; or ​ 2. The wireless earphone circuit of claim 1, wherein, ​ ​ ​ ​ ​ The second switch device comprises an NMOS transistor, a gate of the NMOS transistor is coupled with a signal output end of the control module, a drain of the NMOS transistor is coupled with the first node, a source of the NMOS transistor is coupled with the battery, the control module controls a size of the gate voltage through the control signal to adjust a voltage difference between the source and the gate, so as to control a size of the charging current, and charging management is realized.

4. The wireless earphone circuit of claim 1, wherein, The communication unit controls the closing or opening of the first switch device and controls the charging management unit to perform or stop charging management on the battery.

5. The wireless earphone circuit of claim 4, wherein, When the first switch device is closed, the communication unit controls the first switch device to be opened after receiving a data transmission instruction sent by the charging case, and controls the charging management unit to stop charging management on the battery. The communication unit performs wired communication with the charging case to transmit data when the first switch device is opened, and receives a data transmission completion instruction sent by the charging case after the data transmission is completed, to control the first switch device to be closed and control the charging management unit to continue charging management.

6. The wireless earphone circuit according to claim 4, characterized in that: The communication unit controls the closing or opening of the first switch device and controls the charging management unit to perform or stop charging management on the battery by simultaneously sending control instructions to the first switch device and the charging management unit; or The communication unit controls the closing or opening of the first switch device and controls the charging management unit to perform or stop charging management on the battery by respectively sending control instructions to the first switch device and the charging management unit.

7. The wireless earphone circuit according to any one of claims 1-6, characterized in that: When the first switch device is closed, the communication unit transmits first data information to the charging case through the wired communication connection, the first data information comprising the battery capacity of the charging case and / or the switch state of the cover of the charging case; And / or When the first switch device is opened, the communication unit transmits second data information to the charging case through the wired communication connection, the second data information comprising an upgrade program for upgrading the earphone.

8. A wireless earpiece, characterized in that The wireless earphone circuit according to any one of claims 1-7.

9. A wireless earphone assembly, comprising: The wireless earphone comprises a charging case and the wireless earphone circuit according to claim 8.

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