A charging control device for a sound system and electronic equipment

Abstract

The application provides a charging control device for a sound system and an electronic device. The device comprises a connection module, a host module and a microphone module connected through the connection module. The connection module is used to establish a power supply path and a communication path between the host module and the microphone module. The host module comprises a power supply system, a first control unit and a first state detection unit. The microphone module comprises a charging circuit, a second control unit and a second state detection unit. The first control unit is configured to control the on-off between the power supply system and the charging circuit according to the electric quantity signal output by the first state detection unit and / or the charging control instruction transmitted by the second control unit. Through the cooperative work of the host module and the microphone module, the application realizes the intelligent control of the microphone charging in the sound system, effectively protects the host battery, reduces the power consumption, and prolongs the standby time of the system.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, and in particular to a charging control device and electronic device for an audio system. Background Technology

[0002] With the development of technology, audio systems are increasingly widely used in people's lives, and the performance and function of their charging control devices have received more attention. In existing audio systems, the main unit is usually equipped with a charging control device for charging the microphone. However, existing charging control devices have some problems in actual use. For example, when the microphone is placed in the main unit's charging slot, the main unit cannot accurately determine its own battery status and the microphone's battery status, making it unable to effectively control the charging process. Even when the main unit's battery is low, it will continue to charge the microphone, resulting in high standby power consumption. This can easily cause the main unit to fail to power on due to low battery, and may even shorten battery life. Furthermore, even when the microphone is fully charged, the main unit continues to charge it without automatic charging stop, further increasing system power consumption and affecting the overall user experience and lifespan of the audio system. Therefore, existing technology has the defect of the main unit being unable to charge appropriately based on its own and the microphone's battery status.

[0003] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a charging control device and electronic device for an audio system. Through the coordinated operation of the host module and the microphone module, intelligent control of microphone charging in the audio system is achieved, solving the problem in the prior art that the host cannot charge reasonably according to its own and the microphone's power status, effectively protecting the host battery, reducing power consumption, and extending the system's standby time.

[0005] In a first aspect, this application provides a charging control device for an audio system, including a connection module, and a host module and a microphone module connected through the connection module;

[0006] The connection module is used to establish a power supply path and a communication path between the host module and the microphone module;

[0007] The host module includes a power supply system, a first control unit, and a first status detection unit;

[0008] The microphone module includes a charging circuit, a second control unit, and a second status detection unit;

[0009] The first control unit is configured to control the connection and disconnection between the power supply system and the charging circuit based on the power signal output by the first status detection unit and / or the charging control command transmitted by the second control unit.

[0010] Furthermore, in some embodiments of this application, the first state detection unit is used to monitor the host battery level and output a power signal to the first control unit;

[0011] The second status detection unit is used to monitor the microphone's battery status and output a charging status signal to the second control unit;

[0012] The second control unit transmits charging control commands corresponding to the charging status signal to the first control unit through the communication path of the connection module;

[0013] The output terminal of the first control unit is connected to the enable terminal of the power supply system, and the output terminal of the power supply system is connected to the charging circuit through the power supply path of the connection module.

[0014] Furthermore, in some embodiments of this application, the first control unit is configured to: when the first state detection unit detects that the host power is lower than a preset threshold, control the power supply system to disconnect the power supply path, and at the same time send a low power signal to the second control unit through the connection module.

[0015] Furthermore, in some embodiments of this application, the microphone module further includes a status indicator electrically connected to the second control unit, which is used to trigger a visual or auditory cues based on a low battery signal sent by the first control unit.

[0016] Furthermore, in some embodiments of this application, the first control unit is also configured to: when it receives a stop charging command sent by the second control unit through the connection module, control the power supply system to disconnect the power supply path and cause the first control unit to enter a low power consumption mode.

[0017] Furthermore, in some embodiments of this application, the second control unit is configured to send a start charging command to the first control unit through the connection module when the second state detection unit detects that the microphone battery meets the charging conditions.

[0018] Furthermore, in some embodiments of this application, the first state detection unit includes a voltage comparator circuit for detecting whether the battery voltage of the host is lower than a preset threshold.

[0019] The second state detection unit includes a battery management chip, which is used to detect the charging state of the microphone battery and generate charging control commands.

[0020] Furthermore, in some embodiments of this application, the host module further includes an electromagnetic detection unit for sensing the insertion state of the microphone module through changes in the magnetic field, and the output terminal of the electromagnetic detection unit is connected to the wake-up pin of the first control unit.

[0021] Furthermore, in some embodiments of this application, the power supply system includes a MOSFET switching circuit, the gate of which is connected to the output terminal of the first control unit, the drain of which is connected to the positive terminal of the host battery, and the source of which is connected to the power supply interface of the connection module.

[0022] Secondly, this application also provides an electronic device, including a charging control device for an audio system as described in the first aspect.

[0023] Implementing the embodiments of this application has the following beneficial effects:

[0024] In summary, this application provides a charging control device and electronic device for an audio system. The charging control device for the audio system includes a connection module, and a host module and a microphone module connected through the connection module. The connection module is used to establish a power supply path and a communication path between the host module and the microphone module. The host module includes a power supply system, a first control unit, and a first status detection unit. The microphone module includes a charging circuit, a second control unit, and a second status detection unit. The first control unit is configured to control the on / off connection between the power supply system and the charging circuit according to the power signal output by the first status detection unit and / or the charging control command transmitted by the second control unit.

[0025] The charging control device for an audio system provided in this application uses a connecting module as a bridge to ensure a stable connection and signal transmission between the host module and the microphone module, providing a foundation for the host module to control the charging of the microphone module. The first and second state detection units in the host module monitor the host battery level and the microphone battery level, respectively, and transmit the monitored signals to the corresponding control units. This allows the first control unit to precisely control the connection and disconnection between the power supply system and the charging circuit based on the monitored signals and the charging control commands transmitted by the second control unit. This achieves intelligent control of microphone charging in the audio system, solving the problem in existing technologies where the host cannot charge reasonably according to its own and the microphone's battery level, effectively protecting the host battery, reducing power consumption, and extending system standby time. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a charging control device for an audio system provided in an embodiment of this application;

[0028] Figure 2 This is another structural schematic diagram of the charging control device for an audio system provided in the embodiments of this application;

[0029] Figure 3 This is a schematic diagram of the internal circuit principle of the microphone main control chip provided in the embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the internal circuit principle of the microphone charging circuit provided in the embodiments of this application;

[0031] Figure 5 This is a schematic diagram of the internal circuit principle of the copper ring connector provided in the embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the internal circuit principle of the pogopin connector provided in the embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the internal circuit principle of the host main control chip provided in the embodiments of this application;

[0034] Figure 8 This is a schematic diagram of the internal circuit principle of the power supply system provided in the embodiments of this application.

[0035] Among them, 100 is the connection module; 200 is the host module; 201 is the power supply system; 202 is the first control unit; 203 is the first status detection unit; 204 is the electromagnetic detection unit; 300 is the microphone module; 301 is the charging circuit; 302 is the second control unit; 303 is the second status detection unit; and 304 is the status indicator.

[0036] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0038] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0039] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0040] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0041] Please see Figure 1 , Figure 1 This is a schematic diagram of a charging control device for an audio system provided in an embodiment of this application. The charging control device for an audio system provided in this embodiment includes a connection module 100, and a host module 200 and a microphone module 300 connected through the connection module 100.

[0042] The connection module 100 is used to establish a power supply path and a communication path between the host module 200 and the microphone module 300;

[0043] The host module 200 includes a power supply system 201, a first control unit 202, and a first status detection unit 203;

[0044] The microphone module 300 includes a charging circuit 301, a second control unit 302, and a second status detection unit 303;

[0045] The first control unit 202 is configured to control the connection and disconnection between the power supply system 201 and the charging circuit 301 based on the power signal output by the first state detection unit 203 and / or the charging control command transmitted by the second control unit 302.

[0046] Specifically, the connection module 100 mainly consists of a pogo pin connector, a copper ring connector, and related circuit traces and interfaces. The pogo pin connector is a connecting device with elastic contact, typically made of stainless steel or other metals, possessing good conductivity and durability. The copper ring connector is a ring-shaped conductive structure, generally made of materials with excellent conductivity, such as copper. The pogo pin connector is installed in the charging slot of the host module 200, and the copper ring connector is installed at the corresponding position on the bottom of the microphone module 300. When the microphone is inserted into the charging slot of the host module, the pogo pin connector contacts the copper ring connector, thereby establishing a physical connection between the host module 200 and the microphone module 300.

[0047] In this embodiment, the connection module 100 not only provides the physical connection for the power supply path but also carries the signal transmission function of the communication path. Through these two paths, the host module 200 can supply power to the microphone module 300, and the two can also exchange data and transmit control commands, ensuring the orderly progress of the charging process and the coordinated work between the modules.

[0048] Specifically, the host module 200 mainly includes a power supply system 201, a first control unit 202, and a first status detection unit 203. The output of the power supply system 201 is connected to the enable terminal of the first control unit 202. The input of the first control unit 202 receives the power signal from the first status detection unit 203 and the charging control command from the second control unit 302 transmitted through the connection module 100. The output of the first control unit 202 is connected to the power supply path of the connection module 100, thereby realizing the control of the on / off state between the power supply system 201 and the charging circuit 301.

[0049] The core component of the power supply system 201 is the main battery, typically a rechargeable lithium battery. The main battery is connected to the output of the power supply system 201 via a battery management circuit. The battery management circuit controls and protects the battery's charging and discharging processes, ensuring the battery operates within a safe operating range. In addition, the power supply system 201 may also include power conversion circuits, such as DC-DC converters or LDOs (low-dropout linear regulators), to convert the battery voltage to the appropriate voltage required by other circuits within the main module 200.

[0050] The first control unit 202 can be a microcontroller (MCU) or a dedicated control chip, with multiple input / output pins and a certain storage capacity. It mainly implements the logic judgment and command sending functions of the entire charging control process through programming. For example, based on the power signal transmitted by the first state detection unit 203 and the charging control command sent by the second control unit 302, it controls the enable terminal of the power supply system 201, thereby controlling the on / off connection between the power supply system 201 and the charging circuit 301.

[0051] The first state detection unit 203 can specifically be a voltage detection circuit, typically composed of a voltage comparator, voltage divider resistors, etc. Its function is to monitor the voltage of the host battery in real time and convert the detected voltage signal into a power signal, which is then output to the first control unit 202. This allows the host module 200 to understand the power status of its own battery in a timely manner, providing a basis for the host module 200 to intelligently control the charging process.

[0052] Specifically, the microphone module 300 mainly includes a charging circuit 301, a second control unit 302, and a second status detection unit 303. The input terminal of the charging circuit 301 is connected to the power supply system 201 of the host module 200 through the power supply path of the connection module 100 to provide charging power for the microphone battery. The input terminal of the second control unit 302 receives the charging status signal from the second status detection unit 303, and the output terminal is connected to the first control unit 202 of the host module 200 through the communication path of the connection module 100 to realize information interaction and transmission of control commands between the two.

[0053] The charging circuit 301 mainly includes a charging management chip, a charging interface, and related filtering and protection circuits. The charging management chip is responsible for controlling parameters such as current and voltage during the charging process to ensure that the microphone battery can be charged safely and quickly. For example, a linear charging chip or a switching charging chip can be used to provide constant current or constant voltage charging modes according to the characteristics and charging requirements of the microphone battery.

[0054] The second control unit 302 can be composed of a microcontroller (MCU) or a dedicated chip, and has the ability to receive and process signals and send instructions. The second control unit 302 receives the charging status signal transmitted by the second status detection unit 303, and generates corresponding charging control instructions based on the signal. These instructions are then sent to the first control unit 202 of the host module 200 through the communication path of the connection module 100 to realize feedback control of the host power supply.

[0055] The second state detection unit 303 can be composed of a battery power monitoring chip or a simple voltage detection circuit, used to monitor the power status of the microphone battery in real time, such as voltage, current, temperature and other parameters, and convert these parameters into charging status signals and transmit them to the second control unit 302.

[0056] The charging control device for an audio system provided in this embodiment includes a connection module 100 that provides the physical connection for power supply and communication. The host module 200, through its internal power supply system 201, first control unit 202, and first status detection unit 203, can intelligently control the on / off state of the power supply system 201 based on its own battery status and the charging needs of the microphone module 300. The microphone module 300, through the charging circuit 301, second control unit 302, and second status detection unit 303, monitors its own battery status in real time and promptly feeds back charging status signals to the host module 200, providing a basis for the host module 200's charging control decisions. The structural design provided in this embodiment not only effectively protects the host battery and prevents over-discharge when the battery is low, but also rationally controls the charging process based on the microphone's battery status, reducing the overall power consumption of the audio system, extending system standby time, improving user experience, and extending equipment lifespan.

[0057] Furthermore, in some embodiments, the first state detection unit 203 is used to monitor the host battery level and output a power signal to the first control unit 202;

[0058] The second state detection unit 303 is used to monitor the microphone's battery status and output a charging status signal to the second control unit 302;

[0059] The second control unit 302 transmits charging control commands corresponding to the charging status signal to the first control unit 202 through the communication channel of the connection module 100;

[0060] The output terminal of the first control unit 202 is connected to the enable terminal of the power supply system 201, and the output terminal of the power supply system 201 is connected to the charging circuit 301 through the power supply path of the connection module 100.

[0061] Specifically, the first state detection unit 203 mainly consists of a high-precision voltage comparator and a voltage divider resistor network. The voltage divider resistor network is used to divide the main unit battery voltage according to a certain ratio and input it to the input terminal of the voltage comparator. The voltage comparator then compares the divided voltage with a preset reference voltage and outputs a corresponding charge signal. For example, an LM393 voltage comparator is used, which has the characteristics of low power consumption and high precision, and can accurately detect changes in battery voltage. One end of the voltage divider resistor network is connected to the positive terminal of the main unit battery, and the other end is connected to the negative terminal of the battery or ground. The dividing point in the middle is connected to the positive input terminal of the voltage comparator. The negative input terminal of the voltage comparator is connected to the reference voltage source, and the output terminal is connected to the input pin of the first control unit 202. The first state detection unit 203 is used to monitor the voltage of the main unit battery in real time and transmit the charge signal to the first control unit 202. When the battery voltage is lower than a preset threshold, the first state detection unit 203 can promptly issue a low charge signal, providing a basis for the main unit module 200 to take corresponding measures to protect the battery and the entire audio system.

[0062] Specifically, the second state detection unit 303 typically consists of a battery management chip (such as BQ27520) and related peripheral circuits. The battery management chip integrates modules for power monitoring, voltage monitoring, and current monitoring, enabling precise measurement of the microphone battery's state of charge and charging status. The peripheral circuits include sampling resistors and filtering capacitors for sampling and filtering the battery current and voltage. The current detection pin of the battery management chip is connected to the microphone battery's charging and discharging circuit via a sampling resistor; the voltage detection pin is connected to the battery's positive and negative terminals; and the temperature detection pin is connected to a temperature sensor on the battery surface. The chip's communication pins (such as I2C or SMBus) are connected to the input pins of the second control unit 302. The second state detection unit 303 monitors the microphone battery's power and charging status and sends the charging status signal to the second control unit 302, allowing the microphone module 300 to promptly understand its battery's status and send charging control commands to the host module 200 as needed, achieving precise control of the charging process.

[0063] Specifically, the input pin of the second control unit 302 is connected to the communication pin of the second status detection unit 303 to receive charging status signals; its output pin is connected to the input pin of the first control unit 202 of the host module 200 through the communication path of the connection module 100 to send charging control commands. Furthermore, the second control unit 302 may also connect to other peripheral devices (such as microphone sensors, Bluetooth modules, etc.) to achieve audio signal acquisition, processing, and transmission functions. The second control unit 302 receives the charging status signals sent by the second status detection unit 303 and generates corresponding charging control commands according to preset charging logic and control algorithms. The charging control commands are sent to the first control unit 202 of the host module 200 through the communication path to achieve coordinated control of the host power supply system 201 and the microphone charging circuit 301. Simultaneously, the second control unit 302 can also process and transmit the microphone's audio signals according to the microphone's operating status and user needs to ensure the microphone's normal operation and audio quality.

[0064] Specifically, the power supply system 201 of the host module 200 includes a host battery, a DC-DC converter or LDO, and other power management devices, used to provide a stable power supply for the host module 200 and other peripheral devices. The charging circuit 301 of the microphone module 300 includes a charging management chip (such as ETA4056E8A), rectifier diodes, filter inductors, and capacitors, used to safely and efficiently charge the microphone battery. The output terminal of the power supply system 201 of the host module 200 is connected to the input terminal of the charging circuit 301 of the microphone module 300 through the power supply path of the connection module 100. Specifically, the positive terminal of the host battery is converted to a suitable voltage by a DC-DC converter or LDO and then connected to the power supply interface of the connection module 100; on the microphone module 300 side, the power supply interface of the connection module 100 is connected to the input pin of the charging management chip through a rectifier diode (such as D3 using 1N5819HW-7-F), and the output pin of the charging management chip is connected to the microphone battery.

[0065] Specifically, the first control unit 202 typically employs a microcontroller (such as the JL7034A6) or a dedicated audio processing chip. These chips have rich peripheral interfaces and powerful processing capabilities, enabling precise control of the power supply system 201 and intelligent management of the charging process. The input pin of the first control unit 202 is connected to the output of the first state detection unit 203 to receive power signals; its other input pin is connected to the output pin of the second control unit 302 via the communication path of the connection module 100 to receive charging control commands. The output of the first control unit 202 is connected to the enable pin of the power supply system 201 to control the on / off state of the power supply system 201.

[0066] In this embodiment, the first state detection unit 203 and the second state detection unit 303 monitor the battery status of the host and the microphone in real time to ensure the accuracy and safety of the charging process. The second control unit 302 and the first control unit 202 communicate with each other and coordinate control through a communication channel. The charging strategy can be adjusted in a timely manner according to the battery status, effectively avoiding problems such as overcharging and over-discharging of the battery, extending battery life, reducing system power consumption, and improving the overall performance and user experience of the audio system.

[0067] Furthermore, in some embodiments, the first control unit 202 is configured to: when the first state detection unit 203 detects that the host power is lower than a preset threshold, control the power supply system 201 to disconnect the power supply path, and at the same time send a low power signal to the second control unit 302 through the connection module 100.

[0068] Specifically, the first control unit 202 employs a microcontroller (MCU) with strong processing capabilities and rich peripheral interfaces, such as the STM32F103 series. This MCU integrates multiple timers, an ADC module, and communication interfaces (such as UART, I2C, and SPI), capable of meeting complex control logic and data processing requirements. The MCU's input pins are connected to the output of the first state detection unit 203 to receive power signals. The MCU's output pins are connected to the enable pin of the power supply system 201 to control its on / off state; additionally, the MCU's communication interface (such as UART) is connected to the second control unit 302 of the microphone module 300 through the communication path of the connection module 100 to send low-power signals to the microphone module 300. When the low-power signal is received from the first state detection unit 203, the MCU, according to preset control logic, immediately outputs a signal to control the enable pin of the power supply system 201, disconnecting the power supply path and stopping power supply to the microphone module 300. Meanwhile, the MCU sends a low battery signal to the second control unit 302 of the microphone module 300 through the communication interface, notifying the microphone module 300 that the main unit battery is low, so that the microphone module 300 can take corresponding measures, such as activating its own power-saving mode or reminding the user to charge the main unit in time, effectively avoiding damage to the main unit battery due to over-discharge, extending the battery life, and improving the reliability and user experience of the entire audio system.

[0069] Furthermore, such as Figure 2 As shown, in some embodiments, the microphone module 300 further includes a status indicator 304, which is electrically connected to the second control unit 302 and is used to trigger visual or auditory cues based on a low battery signal sent by the first control unit 202.

[0070] Specifically, the microphone module 300 may further include a status indicator 304, which may be an LED indicator or a buzzer. An LED indicator typically consists of a light-emitting diode and a current-limiting resistor, and features small size, low power consumption, and fast response. The buzzer may be an electromagnetic buzzer or a piezoelectric buzzer, capable of emitting a prompting sound to alert the user. The status indicator 304 is electrically connected to the second control unit 302, with its input terminal connected to the output pin of the second control unit 302 to receive control signals. For example, the positive terminal of the LED indicator is connected to the output pin of the second control unit 302 through a current-limiting resistor, and the negative terminal is connected to ground; one end of the buzzer is connected to the output pin of the second control unit 302, and the other end is connected to power or ground. In a specific embodiment, the status indicator 304 triggers visual or auditory prompts based on the control signals sent by the second control unit 302. When the main unit's battery is low, the status indicator 304 will visually remind the user of the low battery through flashing lights or continuous beeping sounds, enabling the user to take timely measures to charge the main unit and avoid damage caused by over-discharge of the main unit's battery, thereby improving the convenience and user experience of the entire audio system.

[0071] Furthermore, in some embodiments, the first control unit 202 is also configured to: when it receives a stop charging command sent by the second control unit 302 through the connection module 100, control the power supply system 201 to disconnect the power supply path and cause the first control unit 202 to enter a low power consumption mode.

[0072] Specifically, the first control unit 202 typically employs a microcontroller (MCU), such as the STM32 series, which has multiple input / output ports, built-in memory, and a processing unit, and can execute control operations according to a preset program. The input terminal of the first control unit 202 receives a stop-charging command from the second control unit 302, and its output terminal is connected to the control pin of the power supply system 201. When the microphone is fully charged or malfunctioning, the second control unit 302 sends a stop-charging command through the connection module 100 to the first control unit 202, causing it to disconnect the power supply system 201 and enter a low-power mode, reducing system power consumption, preventing overcharging, and thus improving charging safety.

[0073] Furthermore, in some embodiments, the second control unit 302 is configured to send a start charging command to the first control unit 202 via the connection module 100 when the second state detection unit 303 detects that the microphone battery meets the charging conditions.

[0074] Specifically, the second control unit 302 typically employs a microcontroller (such as an STM32 series MCU) or a dedicated Bluetooth audio control chip (such as a CSR8675). These chips possess powerful processing capabilities and rich peripheral interfaces, enabling them to meet the charging control and audio processing requirements of the microphone module 300. The input pins of the second control unit 302 are connected to the communication pins of the second status detection unit 303 to receive charging status signals; its output pins are connected to the input pins of the first control unit 202 of the host module 200 via the communication path of the connection module 100, for sending charging control commands. Furthermore, the second control unit 302 may also connect to other peripheral devices (such as microphone sensors, Bluetooth modules, etc.) to achieve audio signal acquisition, processing, and transmission functions.

[0075] In a specific embodiment, the second control unit 302 receives the charging status signal sent by the second status detection unit 303 and generates corresponding charging control commands based on preset charging logic and control algorithms. For example, when the microphone battery needs charging, the second control unit 302 sends a start charging command to the host module 200; when the microphone battery is fully charged or an abnormal situation occurs, the second control unit 302 sends a stop charging command to the host module 200. Through this two-way communication and control mechanism, fine management of the charging process is achieved.

[0076] Furthermore, in some embodiments, the first state detection unit 203 includes a voltage comparator circuit for detecting whether the battery voltage of the host is lower than a preset threshold.

[0077] The second state detection unit 303 includes a battery management chip for detecting the charging state of the microphone battery and generating charging control commands.

[0078] Specifically, the first state detection unit 203 mainly includes a voltage comparator circuit, typically employing a high-precision operational amplifier such as the LM339, along with related voltage divider resistors and a reference voltage source. One end of the voltage comparator is connected to the main battery, and the other end is connected to the reference voltage source. A power signal is output by comparing the battery voltage with the reference voltage. One end of the voltage divider resistor is connected to the positive terminal of the main battery, and the other end is grounded; the center tap is connected to the positive input terminal of the voltage comparator. The reference voltage source is connected to the negative input terminal of the voltage comparator. The output terminal of the voltage comparator is connected to the first control unit 202. The first state detection unit 203 monitors the main battery voltage in real time. When the voltage falls below a preset threshold, it sends a low power signal to the first control unit 202, triggering corresponding protection measures.

[0079] Specifically, the second state detection unit 303 is composed of a battery management chip, such as Texas Instruments' BQ27542. This chip can monitor the battery's voltage, current, and temperature, and provide charging status information. The chip integrates a sophisticated analog-to-digital converter and control logic, accurately determining whether the battery is fully charged. The battery connection terminals of the battery management chip are connected to the positive and negative terminals of the microphone battery, and the temperature monitoring terminals are connected to a thermistor on the battery surface. The chip's communication interface (such as I2C) is connected to the second control unit 302. The second state detection unit 303 monitors the charging status of the microphone battery. When the battery is fully charged, it sends a charging completion signal to the second control unit 302 to ensure that overcharging does not occur.

[0080] In this embodiment, the first control unit 202 and the second control unit 302 intelligently control the power supply system 201 and the charging circuit 301 based on monitoring information, thereby optimizing the charging process, extending battery life, and improving system stability and intelligence.

[0081] Furthermore, such as Figure 2 As shown, in some embodiments, the host module 200 further includes an electromagnetic detection unit 204, which is used to sense the insertion state of the microphone module 300 through changes in magnetic field. The output terminal of the electromagnetic detection unit 204 is connected to the wake-up pin of the first control unit 202.

[0082] Specifically, the host module 200 may further include an electromagnetic detection unit 204, which consists of a coil and a magnetic core, with the coil wound around the magnetic core to form an induction coil. When the microphone module 300 approaches or is inserted into the host module 200, the magnetic material (such as a permanent magnet) in the microphone module 300 changes the magnetic field around the induction coil. The output of the electromagnetic detection unit 204 is connected to the wake-up pin of the first control unit 202. When a change in the magnetic field is detected, the electromagnetic detection unit 204 outputs an electrical signal to the wake-up pin. The electromagnetic detection unit 204 is used to sense whether the microphone module 300 is inserted into the host module 200. When microphone insertion is detected, it can promptly wake up the first control unit 202, enabling it to start from a low-power mode and prepare for communication and charging control between the host module 200 and the microphone module 300. This embodiment adds an electromagnetic detection unit 204 to the host module 200 to achieve accurate sensing of the microphone module 300 insertion status, ensuring that the host module 200 can respond quickly when the microphone is inserted, establish a communication connection and start the charging process, thereby improving the intelligence and convenience of the audio system charging control.

[0083] Furthermore, in some embodiments, the power supply system 201 includes a MOSFET switching circuit, the gate of which is connected to the output terminal of the first control unit 202, the drain of which is connected to the positive terminal of the host battery, and the source of which is connected to the power supply interface of the connection module 100.

[0084] Specifically, the core of the power supply system 201 is a MOSFET switching circuit, typically using an N-channel MOSFET, such as the AO3400, which features low on-resistance and high switching speed. In addition, it includes related drive and protection circuits to ensure the safe operation of the MOSFET. The MOSFET's gate is connected to the output of the first control unit 202 to receive control signals; its drain is connected to the positive terminal of the host battery as a power input; and its source is connected to the power supply interface of the connection module 100 to provide power to the microphone module 300. The protection circuit includes overcurrent and overheat protection, typically using components such as fuses and thermistors. The power supply system 201 controls the power supply to the microphone module 300 through the MOSFET switching circuit. When the first control unit 202 issues a charging command, the MOSFET is turned on, providing power to the power supply path between the host module 200 and the microphone module 300; when charging is complete or needs to be stopped, the MOSFET is turned off, cutting off the power supply path, thereby protecting the battery and the circuit.

[0085] This embodiment achieves efficient control of the power supply to the microphone module 300 by employing a MOSFET switching circuit in the power supply system 201. The MOSFET switching circuit has a fast response speed and low on-resistance, which can effectively reduce energy loss and improve power supply efficiency. At the same time, the precise control of the MOSFET switching circuit by the first control unit 202 ensures the accuracy and safety of the charging process.

[0086] like Figure 3 As shown, Figure 3 A circuit diagram of the microphone main control chip is provided. Microphone main control chip A includes:

[0087] Crystal oscillator circuit: A 24MHz / 12PF / 10ppm crystal oscillator (Y1) is used to provide a stable clock signal for the main control chip, ensuring the normal operation of the chip and accurate communication timing.

[0088] Power connection: Includes multiple power supply pins (such as IOVDD, VBAT, VPWR, etc.), which are connected to different power supply voltages (such as 1.8V, 3.3V, 5V, etc.) to provide the necessary power support for the main control chip and its peripheral circuits.

[0089] Communication pins: It has multiple communication-related pins (such as USBDM, USBDP, BT_OSCI, BT_OSCO, etc.) to realize the communication function with the host module and support communication protocols such as USB and Bluetooth.

[0090] Charging control pins, such as CHARGE_EN and CHARGE_FULL, are used to receive and send charging control signals to manage the microphone battery's charging and provide status feedback.

[0091] Status indicator pins: These include pins for status indication (such as LED_B / R, LED_B / B, etc.), which are connected to a status indicator to display the microphone's working status and battery level information to the user.

[0092] like Figure 4 As shown, Figure 4 A circuit diagram of a microphone charging circuit is provided. The microphone charging circuit includes:

[0093] USB 5V Input: The circuit obtains power from the USB 5V power supply, and after filtering by a filter capacitor (such as C82), it provides a stable input voltage to the charging management chip (U5).

[0094] Charging management chip (ETA4056E8A): This chip is responsible for controlling the charging process, ensuring that the charging current and voltage meet the requirements of the microphone battery. The chip's pins include TEMP (temperature detection), PRG (programming), CHRG (charging status indication), GND (ground), VCC (power supply), CE (enable), STDBY (standby), and BAT (battery connection), used to implement charging control and status monitoring functions.

[0095] Charging control pins (CHARGE_EN and CHARGE_FULL): These pins are used to receive and send charging control signals, enabling intelligent control of the charging process. The CHARGE_EN pin receives the charging enable signal, and the CHARGE_FULL pin indicates the charging completion status.

[0096] Resistor and capacitor network: Contains multiple resistors (such as R51, R8, R77) and capacitors (such as C18) to adjust charging parameters, filter and stabilize voltage, ensuring the stability and safety of the charging process.

[0097] like Figure 5 As shown, Figure 5 A circuit diagram of a copper ring connector is provided. The copper ring connector includes:

[0098] Copper ring connector (J2): Used to connect the host module and microphone module, enabling power supply and communication functions. The connector pins include GND and signal lines for transmitting power and data.

[0099] Pogopin connector (TP9187): Used with copper ring connectors, it provides a resilient contact to ensure a good electrical connection during microphone insertion and removal.

[0100] ESD protection diodes (D7, D8): Used to protect circuits from electrostatic discharge (ESD) and ensure circuit stability and reliability.

[0101] like Figure 6 As shown, Figure 6 A circuit diagram of a pogopin connector is provided. The pogopin connector includes:

[0102] Connector pins: The Pogopin connector connects to the host module and microphone module via multiple pins. These pins include VCC_MIC_A (power supply pin), MIC_CHARGE_EN_A (charge enable pin), and MIC_CHARGE_TX / RX (communication pins), used for transmitting power and data.

[0103] ESD protection diodes (ESD18, ESD17, ESD16): Used to protect circuits from electrostatic discharge (ESD) and ensure circuit stability and reliability.

[0104] Capacitors (C922) and resistors (R9975): Used for filtering and current limiting to ensure proper connector operation and stable signal transmission.

[0105] like Figure 7 As shown, Figure 7 A circuit diagram of the host main control chip B is provided. The host main control chip B includes:

[0106] Crystal oscillator circuit (Y3): Provides a stable clock signal to the main control chip, ensuring the normal operation of the chip and accurate communication timing.

[0107] Power supply pins (such as VSYS_4V, VBAT, IOVDD, etc.): These pins are connected to different power supply voltages to provide the necessary power support for the main control chip and its peripheral circuits.

[0108] Communication pins (such as USBDM, USBDP, UART, etc.): used to implement communication functions with the microphone module, supporting USB and serial communication protocols.

[0109] Charging control pins (such as CHARGE_EN and CHARGE_FULL): used to send and receive charging control signals to manage the charging of the microphone module.

[0110] Status indicator pins (such as the pins for connecting LED indicators): used to connect status indicators to display the host's operating status and power information to the user.

[0111] Pins related to the electromagnetic detection unit (such as HALL_3D_INT): used to connect to the electromagnetic detection unit and sense the insertion status of the microphone module.

[0112] Through the collaborative efforts of these components, the host module enables functions such as charging control, communication management, status indication, and insertion detection of the microphone module.

[0113] like Figure 8 As shown, Figure 8 A circuit diagram of the power supply system is provided. The power supply system includes:

[0114] SYSLOAD: The system power input section, which provides power to the entire power supply system.

[0115] The DC-DC converter (U6103 ETA2893) is used to convert input voltage into a stable voltage required by the microphone module. The converter's pins include EN (enable), IN (input), BST (boost), SW (switch), and FB (feedback), used for voltage conversion and stable output.

[0116] Inductors (L5212) and capacitors (such as C2215, C2225, C2216): used for filtering and stabilizing the output voltage to ensure the stability of the power supply.

[0117] Resistor networks (such as R2234, R2235, R2238): used to adjust and provide feedback on the output voltage to ensure the normal operation of the converter.

[0118] Output voltage (VCC5V_MIC): Provides a stable 5V power supply to the microphone module, ensuring its normal operation.

[0119] In addition, in some embodiments, this embodiment also provides an electronic device, including the charging control device for an audio system as described above.

[0120] In summary, this embodiment provides a charging control device and electronic device for an audio system. The charging control device for the audio system includes a connection module, and a host module and a microphone module connected through the connection module. The connection module is used to establish a power supply path and a communication path between the host module and the microphone module. The host module includes a power supply system, a first control unit, and a first status detection unit. The microphone module includes a charging circuit, a second control unit, and a second status detection unit. The first control unit is configured to control the on / off connection between the power supply system and the charging circuit according to the power signal output by the first status detection unit and / or the charging control command transmitted by the second control unit.

[0121] In the charging control device for an audio system provided in this embodiment, a connecting module acts as a bridge to ensure a stable connection and signal transmission between the host module and the microphone module, providing a foundation for the host module to control the charging of the microphone module. The first and second state detection units in the host module monitor the host battery level and the microphone battery level, respectively, and transmit the monitored signals to the corresponding control units. This allows the first control unit to precisely control the connection and disconnection between the power supply system and the charging circuit based on the monitored signals and the charging control commands transmitted by the second control unit. This achieves intelligent control of microphone charging in the audio system, solving the problem in the prior art where the host cannot charge reasonably according to its own and the microphone's battery level, effectively protecting the host battery, reducing power consumption, and extending the system's standby time.

[0122] That is, the above description is only an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, such as the combination of technical features between different embodiments, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of this application.

[0123] Furthermore, for structural elements with the same or similar characteristics, this application may use the same or different reference numerals for identification. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0124] In this application, the word "for example" is used to mean "used as an example, illustration, or explanation." Any embodiment described as "for example" in this application is not necessarily to be construed as more preferred or advantageous than other embodiments. This application has been provided above to enable any person skilled in the art to make and use it. Various details are set forth in the above description for purposes of explanation.

[0125] It should be understood that those skilled in the art will recognize that this application can be implemented without using these specific details. In other embodiments, well-known structures and processes will not be described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed herein.

Claims

1. A charging control device for an audio system, characterized in that, It includes a connection module, and a host module and a microphone module connected through the connection module; The connection module is used to establish a power supply path and a communication path between the host module and the microphone module; The host module includes a power supply system, a first control unit, and a first status detection unit; The microphone module includes a charging circuit, a second control unit, and a second status detection unit; The first control unit is configured to control the connection and disconnection between the power supply system and the charging circuit based on the power signal output by the first status detection unit and / or the charging control command transmitted by the second control unit.

2. The charging control device for an audio system according to claim 1, characterized in that, The first status detection unit is used to monitor the host battery level and output the power signal to the first control unit; The second status detection unit is used to monitor the microphone's battery status and output a charging status signal to the second control unit; The second control unit transmits charging control commands corresponding to the charging status signal to the first control unit through the communication path of the connection module; The output terminal of the first control unit is connected to the enable terminal of the power supply system, and the output terminal of the power supply system is connected to the charging circuit through the power supply path of the connection module.

3. The charging control device for an audio system according to claim 2, characterized in that, The first control unit is configured to: when the first state detection unit detects that the host power is lower than a preset threshold, control the power supply system to disconnect the power supply path, and at the same time send a low power signal to the second control unit through the connection module.

4. The charging control device for an audio system according to claim 3, characterized in that, The microphone module also includes a status indicator, which is electrically connected to the second control unit and is used to trigger visual or auditory cues based on a low battery signal sent by the first control unit.

5. The charging control device for an audio system according to claim 2, characterized in that, The first control unit is also configured to: when it receives a stop charging command sent by the second control unit through the connection module, control the power supply system to disconnect the power supply path and cause the first control unit to enter a low power mode.

6. The charging control device for an audio system according to claim 2, characterized in that, The second control unit is configured to send a start charging command to the first control unit through the connection module when the second status detection unit detects that the microphone battery meets the charging conditions.

7. The charging control device for an audio system according to claim 2, characterized in that, The first state detection unit includes a voltage comparator circuit for detecting whether the battery voltage of the host is lower than a preset threshold. The second state detection unit includes a battery management chip, which is used to detect the charging state of the microphone battery and generate charging control commands.

8. The charging control device for an audio system according to claim 1, characterized in that, The host module also includes an electromagnetic detection unit, which is used to sense the insertion status of the microphone module through changes in magnetic field. The output of the electromagnetic detection unit is connected to the wake-up pin of the first control unit.

9. The charging control device for an audio system according to claim 1, characterized in that, The power supply system includes a MOSFET switching circuit, the gate of which is connected to the output terminal of the first control unit, the drain of which is connected to the positive terminal of the host battery, and the source of which is connected to the power supply interface of the connection module.

10. An electronic device, characterized in that, Includes a charging control device for an audio system as described in any one of claims 1-9.

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