Earphone charging bin communication circuit and Bluetooth earphone charging bin

Abstract

The embodiment of the utility model provides an earphone charging bin communication circuit and a Bluetooth earphone charging bin, and relates to the technical field of earphones. The earphone charging bin communication circuit comprises a power management module, a left earphone interface module and a right earphone interface module, the left earphone interface module comprises a left earphone positive electrode interface and a left earphone negative electrode interface; the right earphone interface module comprises a right earphone positive electrode interface and a right earphone negative electrode interface; the power supply management module is electrically connected with the left earphone positive electrode interface, the left earphone negative electrode interface, the right earphone positive electrode interface and the right earphone negative electrode interface; wherein the power management module is used for acquiring left earphone electric quantity data from the left earphone negative electrode interface, acquiring right earphone electric quantity data from the right earphone negative electrode interface, and supplying power to the left earphone positive electrode interface and the right earphone positive electrode interface. According to the embodiment of the invention, the stability of communication between the charging bin and the earphone can be improved, and the communication error rate is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the earphone technical field, especially relates to an earphone charging bin communication circuit and a Bluetooth earphone charging bin. BACKGROUND

[0002] At present, when earphones are charged in a charging bin, the communication between the earphones and the charging bin is not stable enough. For example, when a Bluetooth earphone is placed in a charging bin for charging, the charging bin and the Bluetooth earphone will establish a communication connection so as to obtain the current charging state and other information of the Bluetooth earphone. However, the current charging bin is often interfered when communicating with the earphone, which leads to communication errors and affects the normal use of the earphone.

[0003] Therefore, how to improve the stability of the communication between the charging bin and the earphone and reduce the error rate of the communication has become a technical problem to be solved urgently. CONTENT OF THE INVENTION

[0004] The main purpose of the embodiment of the present application is to provide an earphone charging bin communication circuit and a Bluetooth earphone charging bin, which aims to improve the stability of the communication between the charging bin and the earphone and reduce the error rate of the communication.

[0005] To achieve the above-mentioned purpose, the first aspect of the embodiment of the present application provides an earphone charging bin communication circuit, which comprises: a power management module, a left earphone interface module, and a right earphone interface module.

[0006] The left earphone interface module comprises a left earphone positive electrode interface and a left earphone negative electrode interface; and the right earphone interface module comprises a right earphone positive electrode interface and a right earphone negative electrode interface.

[0007] The power management module is electrically connected with the left earphone positive electrode interface, the left earphone negative electrode interface, the right earphone positive electrode interface, and the right earphone negative electrode interface.

[0008] The power management module is configured to obtain left earphone power data from the left earphone negative electrode interface, obtain right earphone power data from the right earphone negative electrode interface, and supply power to the left earphone positive electrode interface and the right earphone positive electrode interface.

[0009] In some embodiments, the power management module comprises a boost conversion chip and a charging chip.

[0010] The left earphone interface module further comprises a first anti-static diode and a second anti-static diode.

[0011] One end of the first anti-static diode is grounded, and the other end of the first anti-static diode is electrically connected with the left earphone positive electrode interface and the boost conversion chip.

[0012] One end of the second anti-static diode is grounded, and the other end of the second anti-static diode is electrically connected to the left earphone negative interface and the charging chip;

[0013] The boost conversion chip is electrically connected to the charging chip.

[0014] In some embodiments, the right earphone interface module further comprises a third anti-static diode and a fourth anti-static diode;

[0015] One end of the third anti-static diode is grounded, and the other end of the third anti-static diode is electrically connected to the right earphone positive interface and the boost conversion chip;

[0016] One end of the fourth anti-static diode is grounded, and the other end of the fourth anti-static diode is electrically connected to the right earphone negative interface and the charging chip.

[0017] In some embodiments, the earphone charging bin communication circuit further comprises a control module and a display module;

[0018] The control module is electrically connected to the power management module and the display module;

[0019] The control module is configured to send the left earphone power data and the right earphone power data to the display module, and the display module is configured to display the left earphone power data and the right earphone power data.

[0020] In some embodiments, the display module further comprises a left earphone power display sub-module, a right earphone power display sub-module, and a charging bin power display sub-module;

[0021] The control module is electrically connected to the left earphone power display sub-module, the right earphone power display sub-module, and the charging bin power display sub-module.

[0022] In some embodiments, the earphone charging bin communication circuit further comprises a light-emitting diode driving module;

[0023] The left earphone power display sub-module comprises at least two first light-emitting diodes, the right earphone power display sub-module comprises at least two second light-emitting diodes, and the charging bin power display sub-module comprises at least two third light-emitting diodes;

[0024] The control module is electrically connected to the light-emitting diode driving module, and the light-emitting diode driving module is electrically connected to each of the first light-emitting diodes, the second light-emitting diodes, and the third light-emitting diodes.

[0025] In some embodiments, the earphone charging bin communication circuit further comprises a magnetic switch module;

[0026] The magnetic switch module is electrically connected to the control module.

[0027] The magnetic switch module is used for detecting the switch state of the earphone charging bin.

[0028] In some embodiments, the earphone charging bin communication circuit further comprises: a universal serial bus interface module, and an overcurrent and overvoltage protection module;

[0029] The universal serial bus interface module is electrically connected to the overcurrent and overvoltage protection module, and the overcurrent and overvoltage protection module is electrically connected to the power management module.

[0030] The universal serial bus interface module is used for accepting wired transmission of electric energy from an external power source, and the overcurrent and overvoltage protection module is used for overcurrent protection and overvoltage protection.

[0031] In some embodiments, the earphone charging bin communication circuit further comprises: a wireless charging module;

[0032] The wireless charging module is electrically connected to the power management module.

[0033] The wireless charging module is used for accepting wireless transmission of electric energy from an external power source, and the power management module is used for powering the left earphone positive electrode interface and the right earphone positive electrode interface by using the electric energy.

[0034] To achieve the above-mentioned purpose, a second aspect of the embodiment of the present application proposes a Bluetooth earphone charging bin, which comprises the earphone charging bin communication circuit of the first aspect.

[0035] The earphone charging bin communication circuit and the Bluetooth earphone charging bin proposed by the present application comprise a left earphone interface module for connecting a left earphone, and a right earphone interface module for connecting a right earphone. The power management module obtains left earphone electric quantity data from a left earphone negative electrode interface, and obtains right earphone electric quantity data from a right earphone negative electrode interface, and powers a left earphone positive electrode interface and a right earphone positive electrode interface. It can be seen that the present application powers the earphones through different interfaces and communicates with the earphones, thereby avoiding interference between the power supply voltage and the communication electric signal, reducing the communication error rate, and improving the stability of the earphone charging bin and the earphones. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a module block diagram of the earphone charging bin communication circuit provided by the embodiment of the present application;

[0037] Figure 2 is a circuit principle diagram of the earphone charging bin communication circuit provided by the embodiment of the present application;

[0038] Figure 3is a module block diagram of the earphone charging box communication circuit provided by another embodiment of the application;

[0039] Figure 4 is a module block diagram of the earphone charging box communication circuit provided by another embodiment of the application;

[0040] Figure 5 is a circuit principle diagram of the earphone charging box communication circuit provided by another embodiment of the application;

[0041] Figure 6 is a circuit principle diagram of the earphone charging box communication circuit provided by another embodiment of the application.

[0042] Fig. 1 is a schematic diagram of the earphone charging box communication circuit provided by an embodiment of the application. The earphone charging box communication circuit comprises a power management module 10, a left earphone interface module 20, a right earphone interface module 30, a control module 40, a display module 50, a left earphone positive electrode interface 21, a left earphone negative electrode interface 22, a right earphone positive electrode interface 31, a right earphone negative electrode interface 32, a left earphone power display sub-module 51, a right earphone power display sub-module 52, and a charging box power display sub-module 53.

[0043] Fig. 2 is a schematic diagram of the earphone charging box communication circuit provided by another embodiment of the application. The earphone charging box communication circuit comprises a boost conversion chip U1, a first anti-static diode E1, a second anti-static diode E2, a third anti-static diode E3, a fourth anti-static diode E4, a first light-emitting diode LED01, a second light-emitting diode LED02, and a third light-emitting diode LED03. DETAILED DESCRIPTION

[0044] In order to make the objects, technical solutions and advantages of the application clearer, the application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not intended to limit the application.

[0045] It should be noted that although the functional modules are divided in the device schematic diagram, and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a manner different from the module division in the device or the order in the flowchart. The terms "first", "second", and the like in the specification and claims and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of the application and are not intended to limit the application.

[0047] First, the terms involved in the application are analyzed:

[0048] Universal Serial Bus (USB) is a serial bus standard and a technical specification for input / output interfaces, widely used in information and communication products such as personal computers and mobile devices.

[0049] Overvoltage Protection (OVP) is a circuit protection mechanism used to protect electronic devices from damage caused by excessive voltage. When the external voltage exceeds the threshold that the device or circuit can safely withstand, OVP will intervene and disconnect the power supply or reduce the voltage to a safe level to prevent damage to the device or degradation of its performance.

[0050] OCP (Over Current Protection): This is a circuit protection mechanism used to protect electronic equipment and circuits from damage caused by excessive current. When the current exceeds the safety limits designed for the device or circuit, OCP intervenes, cutting off or limiting the current supply to prevent overheating and protect the device from damage.

[0051] CPU (Central Processing Unit): The core component of computer hardware, responsible for executing instructions and processing data in programs.

[0052] MCU (Microcontroller Unit): A type of integrated circuit, specifically a single-chip microcomputer system that integrates a microprocessor core, memory, input / output interfaces, and timers.

[0053] PLC (Programmable Logic Controller): A digital electronic system widely used in automation control, capable of controlling various types of machinery or production processes.

[0054] The communication circuit for the earphone charging case and the Bluetooth earphone charging case provided in this application embodiment are specifically described through the following embodiments. First, the communication circuit for the earphone charging case in this application embodiment is described.

[0055] Figure 1 This is an optional module block diagram of the earphone charging case communication circuit provided in an embodiment of this application. The earphone charging case communication circuit includes: a power management module 10, a left earphone interface module 20, and a right earphone interface module 30;

[0056] The left headphone jack module 20 includes a left headphone positive jack 21 and a left headphone negative jack 22; the right headphone jack module 30 includes a right headphone positive jack 31 and a right headphone negative jack 32.

[0057] The power management module 10 is electrically connected to the left earphone positive interface 21, the left earphone negative interface 22, the right earphone positive interface 31, and the right earphone negative interface 32;

[0058] The power management module 10 is used to obtain the power data of the left earphone from the negative interface 22 of the left earphone, obtain the power data of the right earphone from the negative interface 32 of the right earphone, and supply power to the positive interface 21 of the left earphone and the positive interface 31 of the right earphone.

[0059] The beneficial effects of this application's embodiments include, but are not limited to: obtaining left earphone power data from the left earphone negative interface 22 and right earphone power data from the right earphone negative interface 32 through the power management module 10, and supplying power to the left earphone positive interface 21 and right earphone positive interface 31. It is evident that this application supplies power to the earphones and communicates with them through different interfaces, thereby avoiding interference between the power supply voltage and the communication electrical signal, reducing the communication error rate, and improving the stability of communication between the earphone charging case and the earphones.

[0060] It should be noted that the left earphone jack module 20 is used for electrical connection to the left earphone, and the right earphone jack module 30 is used for electrical connection to the right earphone. For example, when both the left and right earphones are placed in the charging case for charging, the left earphone jack module 20 is electrically connected to the left earphone and can communicate with it; the right earphone jack module 30 is electrically connected to the right earphone and can communicate with it.

[0061] It should be noted that the current communication between the charging case and the earbuds (left and / or right) is not stable enough. For example, when the left earbud is charging in the current charging case, the charging case supplies power to the left earbud through the positive terminal of the left earbud's jack, and simultaneously communicates with the left earbud through the positive terminal, such as sending electrical signals (i.e., sending codes). During this process, interference can occur between the power supply voltage and the electrical signal, making the communication unstable. For example, voltage interference can cause communication errors between the charging case and the earbuds, preventing the charging case from obtaining charging status data such as the earbuds' current battery level, thus affecting the normal use of both the earbuds and the charging case. In this embodiment of the application, in view of the above situation, the earphone charging case communication circuit communicates with the earphone from the negative interface (such as the negative interface 22 of the left earphone and / or the negative interface 32 of the right earphone) and supplies power to the earphone from the positive interface (such as the positive interface 21 of the left earphone and / or the positive interface 31 of the right earphone). By supplying power to the earphone and communicating with the earphone through different interfaces, interference between the power supply voltage and the communication electrical signal is avoided, the communication error rate is reduced, and the stability of the communication between the earphone charging case and the earphone is improved.

[0062] It should be noted that the communication circuit of the earphone charging case is applied to the earphone charging case. The earphone charging case is also called an earphone charging box. In some embodiments, the earphone charging case is a charging case for wireless earphones, such as a Bluetooth earphone charging case. Specifically, the earphone charging cases in this application embodiment include, but are not limited to: Bluetooth earphone charging cases, bone conduction earphone charging cases, bone conduction Bluetooth earphone charging cases, ear clip-on earphone charging cases, ear-hook earphone charging cases, ear-hook non-in-ear earphone charging cases, ear-hook Bluetooth earphone charging cases, open-back Bluetooth earphone charging cases, sports earphone charging cases, running earphone charging cases, wireless sports earphone charging cases, AI (artificial intelligence) earphone charging cases, open-back AI earphone charging cases, noise-canceling earphone charging cases, ANC (active noise cancellation) earphone charging cases, and ENC (environmental noise cancellation). This application includes any one of the following: earphone charging case, CVC (call noise cancellation) earphone charging case, feedback noise cancellation earphone charging case, adaptive noise cancellation earphone charging case, AI (artificial intelligence) noise cancellation earphone charging case, uplink noise cancellation earphone charging case, downlink noise cancellation earphone charging case, EQ (equalizer) earphone charging case, HiFi (high fidelity) earphone charging case, low distortion earphone charging case, spatial audio earphone charging case, voice control earphone charging case, stereo surround sound earphone charging case, Dolby earphone charging case, Dolby Bluetooth earphone charging case, and Dolby Atmos earphone charging case. Furthermore, the earphone charging case communication circuit can also be applied to other types of earphone charging cases, and this application embodiment does not limit this application.

[0063] Please see Figure 2 In some embodiments, the power management module 10 includes a boost converter chip U1 and a charging chip (not shown in the figure);

[0064] The left headphone jack module 20 also includes: a first anti-static diode E1 and a second anti-static diode E2;

[0065] One end of the first anti-static diode E1 is grounded, and the other end of the first anti-static diode E1 is electrically connected to the positive terminal interface 21 of the left earphone and the boost converter chip U1.

[0066] One end of the second anti-static diode E2 is grounded, and the other end of the second anti-static diode E2 is electrically connected to the negative terminal 22 of the left earphone and the charging chip.

[0067] The boost converter chip U1 is electrically connected to the charging chip.

[0068] The advantage of this embodiment is that the power supply to the earphones and the charging status of the earphones are realized through the boost converter chip U1 and the charging chip. Furthermore, the excessive current is guided to the ground wire through the first anti-static diode E1 and the second anti-static diode E2, thereby avoiding damage to the left earphone by electrostatic discharge, improving the safety of the left earphone interface module 20, and thus improving the safety of the earphone charging case in powering the earphones and communicating with them.

[0069] It should be noted that, in Figure 2 In this configuration, the VOR, VOL, and VSYS interfaces are all used to connect to the charging chip. The VOR interface receives the battery level data from the right earphone, the VOL interface receives the battery level data from the left earphone, and the VSYS interface obtains the charging voltage from the charging chip to power both the left and right earphones. The R_GND interface is grounded, and the L_GND interface is also grounded.

[0070] In some embodiments, such as Figure 2 As shown, the left headphone jack module 20 and / or the right headphone jack module 30 may also include resistors, capacitors, diodes, or other types of electronic components, which are not limited in this application embodiment.

[0071] It should be noted that the first antistatic diode E1 and the second antistatic diode E2 are used to provide electrostatic protection for the left earphone.

[0072] It should be noted that electrostatic discharge (ESD) diodes, also known as electrostatic protection diodes, are used for electrostatic protection. They can effectively absorb and disperse the energy generated by electrostatic discharge, such as guiding the current generated by electrostatic discharge to the ground wire, thereby protecting electronic devices such as headphone charging cases from damage.

[0073] It should be noted that the boost converter chip U1 is used to convert a low-voltage input to a high-voltage output. For example, the boost converter chip U1 is used to increase the voltage output of the charging chip to power the left and right earphones, thereby meeting the charging needs of electronic devices such as earphones.

[0074] It should be noted that the charging chip, also known as a power management integrated circuit (PMIC), is used to manage, control, and optimize electrical energy. The PMIC can monitor the earphone's battery status, control the current and voltage during charging, and manage the power supply to the earphones, thereby providing a stable power supply and improving the safety and reliability of the earphone charging case's communication circuitry.

[0075] Please see Figure 2 In some embodiments, the right headphone jack module 30 further includes: a third antistatic diode E3 and a fourth antistatic diode E4;

[0076] One end of the third anti-static diode E3 is grounded, and the other end of the third anti-static diode E3 is electrically connected to the positive terminal 31 of the right earphone and the boost converter chip U1.

[0077] One end of the fourth anti-static diode E4 is grounded, and the other end of the fourth anti-static diode E4 is electrically connected to the negative terminal 32 of the right earphone and the charging chip.

[0078] The advantage of this embodiment is that by using the third antistatic diode E3 and the fourth antistatic diode E4 to guide excessive current to the ground wire, the electrostatic discharge is prevented from damaging the right earphone, thereby improving the safety of the right earphone interface module 30 and thus improving the safety of the earphone charging case in supplying power to the earphone and communicating with it.

[0079] It should be noted that the third antistatic diode E3 and the fourth antistatic diode E4 are used to provide electrostatic protection for the right earphone.

[0080] Please see Figure 3 In some embodiments, the earphone charging case communication circuit further includes: a control module 40 and a display module 50;

[0081] Control module 40 is electrically connected to power management module 10 and display module 50;

[0082] The control module 40 is used to send the battery data of the left earphone and the battery data of the right earphone to the display module 50, and the display module 50 is used to display the battery data of the left earphone and the battery data of the right earphone.

[0083] The advantage of this embodiment is that the control module 40 processes the battery data of the left and right earbuds and sends it to the display module 50, where the battery data of the left and right earbuds is displayed. This intuitively shows the charging status of the earbuds and improves the ease of use of the earbud charging case.

[0084] It should be noted that the control module 40 includes any one of the following processors: CPU (Central Processing Unit), MCU (Microcontroller Unit), PLC (Programmable Logic Controller), and Application Specific Integrated Circuit (ASIC). The control module 40 may also include other types of processors, and this embodiment does not limit this. For example, the control module 40 includes an MCU.

[0085] Specifically, the display module 50 may include a display screen, such as a digital display screen, an LED touch display screen, or the like. In one embodiment, the display screen is disposed on the outer surface of the earphone charging case.

[0086] Please see Figure 4In some embodiments, the display module 50 further includes: a left earphone battery display submodule 51, a right earphone battery display submodule 52, and a charging case battery display submodule 53;

[0087] The control module 40 is electrically connected to the left earphone power display submodule 51, the right earphone power display submodule 52, and the charging case power display submodule 53.

[0088] It should be noted that the left earphone battery display submodule 51 is used to display the battery level of the left earphone, the right earphone battery display submodule 52 is used to display the battery level of the right earphone, and the charging case battery display submodule 53 is used to display the battery level of the charging case.

[0089] The advantage of this embodiment is that the display module 50 is divided into different display sub-modules, which respectively display the battery levels of the left earbud, the right earbud, and the charging case. Specifically, the left earbud battery display sub-module 51 displays the battery level of the left earbud, the right earbud battery display sub-module 52 displays the battery level of the right earbud, and the charging case battery display sub-module 53 displays the charging case battery level. This allows users to comprehensively and intuitively understand the current battery levels of the left and right earbuds and the charging case, and to know the charging status of the earbuds in a timely manner. Furthermore, the charging case battery level reflects whether the charging case can continue to supply power to the earbuds. This embodiment improves the reliability of the earbud charging case communication circuit.

[0090] Please see Figure 5 and Figure 6 In some embodiments, the earphone charging case communication circuit further includes: a light-emitting diode driving module (not shown in the figure);

[0091] The left earphone power display submodule 51 includes at least two first light-emitting diodes (LEDs) 01; the right earphone power display submodule 52 includes at least two second light-emitting diodes (LEDs) 02; and the charging case power display submodule 53 includes at least two third light-emitting diodes (LEDs) 03.

[0092] The control module 40 is electrically connected to the LED driver module, and the LED driver module is electrically connected to each first LED LED01, each second LED LED02, and each third LED LED03.

[0093] The advantage of this embodiment is that, by controlling the light-emitting state of each first light-emitting diode (LED01) to display the battery level of the left earphone, controlling the light-emitting state of each second light-emitting diode (LED02) to display the battery level of the right earphone, and controlling the light-emitting state of each third light-emitting diode (LED03) to display the battery level of the earphone charging case, the battery levels of the left earphone, right earphone, and earphone charging case are displayed respectively, allowing the user to clearly and intuitively understand the battery status of the earphone charging case during the power supply process to the earphones.

[0094] In some embodiments, such as Figure 5 As shown, the left earphone battery display submodule 51 contains multiple first light-emitting diodes (LEDs) including red (R), green (G), and blue (B) LEDs. The LED driving module can control the on / off combinations and brightness levels of these LEDs, thereby achieving a color battery display function. The right earphone battery display submodule 52 and the charging case battery display submodule 53 also include red (R), green (G), and blue (B) LEDs, respectively, and their functions are similar to those of the left earphone battery display submodule 51, and will not be described further here.

[0095] In some embodiments, such as Figure 6 As shown, the LED driver module includes an LED driver chip U2, which has nine interfaces, designated LED1 to LED9, each connected to one of the aforementioned LEDs. For example, in... Figure 5 and Figure 6 In the middle, LED1 to LED3 interfaces are connected to each first light-emitting diode LED01, LED4 to LED6 interfaces are connected to each second light-emitting diode LED02, and LED7 to LED9 interfaces are connected to each third light-emitting diode LED03.

[0096] It should be noted that the LED driver chip U2 is used to drive the light-emitting diodes (LEDs) to emit light. Specifically, the control module 40 sends instructions to the LED driver chip U2, and the LED driver chip U2 outputs PWM signals according to the instructions to control the light-emitting state of each LED (including the first LED LED01, the second LED LED02, and the third LED LED03).

[0097] In some embodiments, the communication circuit of the earphone charging case further includes: a magnetic switch module;

[0098] The magnetic switch module is electrically connected to the control module 40;

[0099] The magnetic switch module is used to detect the on / off status of the earphone charging case.

[0100] The advantage of this embodiment is that by detecting the on / off state of the earphone charging case through a magnetic switch module, a switch detection function is realized, which enables timely control of the charging operation of the earphones based on the on / off state of the earphone charging case, thereby improving the flexibility of the earphone charging case communication circuit.

[0101] It should be noted that when the earphone charging case lid is open, the magnetic switch module detects that the earphone charging case is in the open state; when the earphone charging case lid is closed, the magnetic switch module detects that the earphone charging case is in the closed state. In some embodiments, if the earphone charging case is in the closed state, the power management module 10 provides charging voltage to the earphones. If the earphone charging case is in the open state, the power management module 10 does not provide charging voltage to the earphones, thereby controlling the charging operation of the earphones according to the open / closed state of the earphone charging case.

[0102] In some embodiments, the earphone charging case has a power-saving mode (also known as a deep sleep mode). For example, if the earphone charging case is closed for a continuous period exceeding a specific time threshold (such as 30 minutes or 1 hour), it can automatically enter power-saving mode. When the earphone charging case is in power-saving mode, and the magnetic switch module detects that the earphone charging case is open, it will exit power-saving mode. The time threshold can be set and adjusted according to user needs and is not limited here.

[0103] In some embodiments, the magnetic switch module includes a Hall switch. In another embodiment, other circuit modules can also be used to detect whether the earphone charging case is closed, such as an infrared light detection module. Compared to infrared light detection, Hall switches have lower power consumption, smaller size, and lighter weight, which can reduce the power consumption of the earphone charging case's communication circuit and improve the portability of the earphone charging case.

[0104] In some embodiments, the communication circuit of the earphone charging case further includes: a universal serial bus interface module and an overcurrent and overvoltage protection module;

[0105] The Universal Serial Bus Interface Module is electrically connected to the Overcurrent and Overvoltage Protection Module, and the Overcurrent and Overvoltage Protection Module is electrically connected to the Power Management Module 10.

[0106] The Universal Serial Bus Interface module is used to accept wired power from an external power source, while the Overcurrent and Overvoltage Protection module is used for overcurrent and overvoltage protection.

[0107] The advantage of this embodiment is that it accepts wired power from an external power source through a universal serial bus interface module, while the overcurrent and overvoltage protection module provides overcurrent and overvoltage protection for the power input from the external power source, thus realizing external wired power supply and improving the safety and reliability of the headphone charging case communication circuit.

[0108] It should be noted that the Universal Serial Bus (USB) interface module may include a USB interface. The earphone charging case can be connected to an external power source via the USB interface, or it can be connected to other electronic devices for data transfer, such as mobile phones, tablets, and laptops.

[0109] Specifically, the overcurrent and overvoltage protection module includes an overcurrent and overvoltage protection chip. This chip provides overcurrent protection (OCP) and overvoltage protection (OVP), protecting the headphone charging case's communication circuit from damage caused by excessive current or voltage, thus improving the safety of the headphone charging case's communication circuit.

[0110] In some embodiments, the earphone charging case communication circuit further includes: a wireless charging module;

[0111] The wireless charging module is electrically connected to the power management module 10;

[0112] The wireless charging module is used to receive electrical energy wirelessly transmitted from an external power source, and the power management module 10 is used to supply power to the positive terminal interface 21 of the left earphone and the positive terminal interface 31 of the right earphone using electrical energy.

[0113] The advantage of this embodiment is that it accepts electrical energy wirelessly transmitted from an external power source through a wireless charging module, thereby realizing the wireless charging function of the earphone charging case and improving the diversity of charging methods for the earphones.

[0114] It should be noted that during the wireless charging process, the wireless charging module is affected by the electromagnetic induction of the external power source. The external power source wirelessly transmits electrical energy to the wireless charging module, and the wireless charging module transmits the electrical energy to the charging chip in the power management module 10. The charging chip uses the electrical energy to power the positive interface 21 of the left earphone and the positive interface 31 of the right earphone.

[0115] This application embodiment also provides a Bluetooth earphone charging case, which includes the aforementioned earphone charging case communication circuit.

[0116] The specific implementation of the Bluetooth earphone charging case is basically the same as the specific implementation of the earphone charging case communication circuit described above, and will not be repeated here.

[0117] It should be noted that the electronic components or assemblies not belonging to our company that appear in the embodiments of this application are merely examples and do not represent actual use.

[0118] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0119] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0120] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0121] Those skilled in the art will understand that all or some of the functional modules / units in the systems and devices disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof.

[0122] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0123] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0124] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. The coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, or indirect coupling or communication connection between the apparatus or units, and may be electrical, mechanical, or other forms.

[0125] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0126] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0127] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0128] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A communication circuit for an earphone charging case, characterized in that, The communication circuit of the earphone charging case includes: a power management module, a left earphone interface module, and a right earphone interface module; The left earphone interface module includes a left earphone positive interface and a left earphone negative interface; the right earphone interface module includes a right earphone positive interface and a right earphone negative interface. The power management module is electrically connected to the positive terminal of the left earphone, the negative terminal of the left earphone, the positive terminal of the right earphone, and the negative terminal of the right earphone. The power management module is used to obtain the power data of the left earphone from the negative terminal of the left earphone, obtain the power data of the right earphone from the negative terminal of the right earphone, and supply power to the positive terminals of the left earphone and the right earphone.

2. The communication circuit for the earphone charging case according to claim 1, characterized in that, The power management module includes: a boost converter chip and a charging chip; The left earphone interface module also includes: a first anti-static diode and a second anti-static diode; One end of the first anti-static diode is grounded, and the other end of the first anti-static diode is electrically connected to the positive terminal of the left earphone and the boost converter chip. One end of the second anti-static diode is grounded, and the other end of the second anti-static diode is electrically connected to the negative terminal of the left earphone and the charging chip; The boost converter chip is electrically connected to the charging chip.

3. The communication circuit for the earphone charging case according to claim 2, characterized in that, The right headphone jack module also includes: a third anti-static diode and a fourth anti-static diode; One end of the third antistatic diode is grounded, and the other end of the third antistatic diode is electrically connected to the positive terminal of the right earphone and the boost converter chip; One end of the fourth antistatic diode is grounded, and the other end of the fourth antistatic diode is electrically connected to the negative terminal of the right earphone and the charging chip.

4. The communication circuit for the earphone charging case according to claim 1, characterized in that, The communication circuit of the earphone charging case also includes: a control module and a display module; The control module is electrically connected to the power management module and the display module; The control module is used to send the battery data of the left earphone and the battery data of the right earphone to the display module, and the display module is used to display the battery data of the left earphone and the battery data of the right earphone.

5. The communication circuit for the earphone charging case according to claim 4, characterized in that, The display module further includes: a left earphone battery level display submodule, a right earphone battery level display submodule, and a charging case battery level display submodule; The control module is electrically connected to the left earphone power display submodule, the right earphone power display submodule, and the charging case power display submodule.

6. The communication circuit for the earphone charging case according to claim 5, characterized in that, The communication circuit of the earphone charging case also includes: a light-emitting diode driving module; The left earphone battery display submodule includes at least two first light-emitting diodes; the right earphone battery display submodule includes at least two second light-emitting diodes; and the charging case battery display submodule includes at least two third light-emitting diodes. The control module is electrically connected to the LED driving module, and the LED driving module is electrically connected to each of the first LEDs, each of the second LEDs, and each of the third LEDs.

7. The communication circuit for the earphone charging case according to claim 4, characterized in that, The communication circuit of the earphone charging case also includes: a magnetic switch module; The magnetic switch module is electrically connected to the control module; The magnetic switch module is used to detect the on / off state of the earphone charging case.

8. The earphone charging case communication circuit according to any one of claims 1 to 7, characterized in that, The communication circuit of the earphone charging case also includes: a universal serial bus interface module and an overcurrent and overvoltage protection module; The universal serial bus interface module is electrically connected to the overcurrent and overvoltage protection module, and the overcurrent and overvoltage protection module is electrically connected to the power management module; The universal serial bus interface module is used to accept electrical energy transmitted from an external power source via wired connection, and the overcurrent and overvoltage protection module is used to perform overcurrent and overvoltage protection.

9. The earphone charging case communication circuit according to any one of claims 1 to 7, characterized in that, The earphone charging case communication circuit also includes: a wireless charging module; The wireless charging module is electrically connected to the power management module; The wireless charging module is used to receive electrical energy wirelessly transmitted from an external power source, and the power management module is used to supply power to the positive terminals of the left and right earphones using the electrical energy.

10. A Bluetooth earphone charging case, characterized in that, The Bluetooth earphone charging case includes the earphone charging case communication circuit according to any one of claims 1 to 9.

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