Self-adaptive charging device and system for wireless microphone

Abstract

The utility model discloses a self-adaptive charging device and system for a wireless microphone, and relates to the technical field of microphone charging, and the self-adaptive charging device comprises a power supply device connection module, a power supply device identification module and a charging loop determination module. The power supply equipment identification module is used for determining equipment information of microphone power supply equipment connected with the power supply equipment connection module, and the microphone power supply equipment is used for providing first electric energy for the wireless microphone; the charging loop determination module is used for determining a target charging loop of the self-adaptive charging equipment based on the equipment information and conducting the target charging loop to enable the wireless microphone to execute a charging task, the target charging loop is used for converting the first electric energy into second electric energy, and the second electric energy is electric energy meeting the microphone safety charging condition. According to the utility model, the microphone can be safely and stably charged, and the safety of the microphone and external equipment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to microphone charging technical field especially relates to a wireless microphone's adaptive charging device and system. BACKGROUND

[0002] With the iteration of wireless technology and audio technology, the quality and performance of wireless microphone products have also been improved, with smaller size, higher quality of sound, stronger noise reduction capability and more stable wireless connection performance, which is one of the current mainstream audio devices.

[0003] Wireless microphone has strong portability and high mobility, and is deeply loved by audio propagation users. Generally, wireless microphone needs to be charged regularly to maintain its audio propagation performance. At present, the charging method of wireless microphone is to connect it to camera, mobile phone, computer, charging bull etc. device, and take the power stored on camera, mobile phone, computer, charging bull etc. device and charge the microphone itself with the taken power. However, the working current and output current of different devices are different. If the power supply device connected with the microphone does not match the charging current of the microphone, the situation of no charging or charging overload may occur, which may even affect the normal operation of the microphone and the power supply device. SUMMARY

[0004] The utility model provides a wireless microphone's adaptive charging device and system, aims at adjusting circuit structure, converts the microphone charging current or charging voltage provided by external equipment into appropriate current or voltage, safely and stably charges the microphone, and ensures the safety of the microphone and external equipment.

[0005] According to an aspect of the utility model, a wireless microphone's adaptive charging device is provided, which comprises: a power supply device connection module, a power supply device identification module and a charging loop determination module, wherein the power supply device connection module is connected with the power supply device identification module and the microphone power supply device respectively, and the charging loop determination module is used for connecting the power supply device identification module and the microphone power supply device;

[0006] The power supply device identification module is used for determining the device information of the microphone power supply device connected with the power supply device connection module, wherein the microphone power supply device is used for providing the first electric energy for the wireless microphone;

[0007] The charging loop determination module is used for determining the target charging loop of the adaptive charging device based on the device information, and turns on the target charging loop, so that the wireless microphone executes the charging task, wherein the target charging loop is used for converting the first electric energy into the second electric energy, and the second electric energy is the electric energy meeting the safe charging condition of the microphone.

[0008] Optionally, the power supply device identification module comprises a resistance detection unit and a type identification unit; the resistance detection unit is configured to determine resistance information of the microphone power supply device connected to the power supply device connection module; the type identification unit is configured to determine type information of the microphone power supply device connected to the power supply device connection module; wherein the resistance information and the type information are used to determine the device information.

[0009] Optionally, the charging circuit determination module comprises a circuit determination unit, a switching control unit and a candidate circuit unit; the circuit determination unit is configured to determine a target charging circuit of the adaptive charging device based on the device information, wherein the target charging circuit is one of the charging circuits included in the candidate circuit unit; the switching control unit is configured to control the on-off of each charging circuit in the candidate circuit unit based on the circuit information of the target charging circuit.

[0010] Optionally, the switching control unit is specifically configured to: perform matching in each charging circuit of the candidate circuit unit based on the circuit information of the target charging circuit, to obtain an intermediate charging circuit corresponding to the microphone power supply device; turn on the intermediate charging circuit and turn off the charging circuits in the candidate circuit unit except the intermediate charging circuit, so as to convert the first electric energy into the second electric energy meeting the microphone safe charging condition through the intermediate charging circuit.

[0011] Optionally, the candidate circuit unit comprises a large-current charging circuit, a small-current charging circuit and a non-charging circuit.

[0012] Optionally, the microphone electric energy storage device and the charging circuit determination module are connected through the electric energy storage device connection module; when the candidate circuit unit comprises a first charging circuit, a second charging circuit and a third charging circuit, the first end of the first charging circuit, the first end of the second charging circuit and the first end of the third charging circuit are all connected to the switching control unit, and the second end of the first charging circuit, the second end of the second charging circuit and the second end of the third charging circuit are all connected to the electric energy storage device connection module; wherein the resistance of the first charging circuit is greater than the resistance of the second charging circuit, and the resistance of the second charging circuit is greater than the resistance of the third charging circuit.

[0013] Optionally, the switching control unit is specifically configured to: when the target charging circuit is the large-current charging circuit, turn on the third charging circuit and turn off the first charging circuit and the second charging circuit; when the target charging circuit is the small-current charging circuit, turn on the second charging circuit and turn off the first charging circuit and the third charging circuit; when the target charging circuit is the non-charging circuit, turn on the first charging circuit and turn off the second charging circuit and the third charging circuit, or turn off the first charging circuit, the second charging circuit and the third charging circuit.

[0014] Optionally, when the candidate circuit unit comprises a fourth charging loop and a fifth charging loop, the first end of the fourth charging loop is connected to the first end of the circuit determination unit and the switching control unit respectively, the second end of the fourth charging loop is connected to the first end of the fifth charging loop and the second end of the switching control unit respectively, and the second end of the fifth charging loop is connected to the power storage device connection module.

[0015] Optionally, the resistance i of the fourth charging loop is greater than the resistance j of the fifth charging loop.

[0016] According to another aspect of the present application, a wireless microphone adaptive charging system is provided, which comprises a microphone power storage device, a microphone power supply device, and any one of the wireless microphone adaptive charging devices in the present application;

[0017] The wireless microphone adaptive charging device is connected to the microphone power storage device and the microphone power supply device respectively.

[0018] The wireless microphone adaptive charging device comprises a power supply device connection module, a power supply device identification module, and a charging loop determination module. The power supply device connection module is connected to the power supply device identification module and the microphone power supply device respectively, and the charging loop determination module is used to connect the power supply device identification module and the microphone power storage device. The power supply device identification module is used to determine the device information of the microphone power supply device connected to the power supply device connection module, wherein the microphone power supply device is used to provide the wireless microphone with first power. The charging loop determination module is used to determine the target charging loop of the adaptive charging device based on the device information, and to turn on the target charging loop to make the wireless microphone perform a charging task. The target charging loop is used to convert the first power into second power, and the second power is power that meets the microphone safe charging condition. The technical solution of the present application can adjust the circuit structure of the adaptive charging device according to the device information of the external device, convert the charging current or charging voltage provided by the external device that does not meet the microphone charging condition into appropriate current or voltage, safely and stably charge the microphone, and ensure the safety of the microphone and the external device. The problems of charging the microphone with the external device, the difference between the working current and the output current of different devices, the non-charging or charging overload situation caused by the charging current of the microphone connected to the power supply device not meeting the microphone, and the influence on the normal operation of the microphone and the power supply device are solved.

[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical scheme in the utility model clearer, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 It is the structural schematic diagram of the adaptive charging device of wireless microphone provided by the utility model,

[0022] Figure 2 It is the structural schematic diagram of the adaptive charging device of wireless microphone provided by the utility model,

[0023] Figure 3 It is the first component connection relation schematic diagram provided by the utility model,

[0024] Figure 4 It is the second component connection relation schematic diagram provided by the utility model,

[0025] Figure 5 It is the first switching circuit schematic diagram provided by the utility model,

[0026] Figure 6 It is the second switching circuit schematic diagram provided by the utility model.

[0027] Reference signs:

[0028] 1-power supply equipment connection module, 2-power supply equipment identification module, 21-resistance detection unit, 22-type identification unit, 3-charging loop determination module, 31-circuit determination unit, 32-switching control unit, 33-candidate circuit unit, 4-electric energy storage equipment connection module. DETAILED DESCRIPTION

[0029] In order to make the technical scheme in the utility model clearer, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0030] It should be noted that the terms "first", "second", "candidate", "initial", "target" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] Figure 1 The present application provides a kind of adaptive charging equipment of wireless microphone structure schematic diagram, the embodiment can be applicable to precision control charging current, wireless microphone's multiple scene charging and adaptive charging etc., refer to Figure 1 The device specifically includes: power supply equipment connection module 1, power supply equipment identification module 2 and charging loop determination module 3, wherein the power supply equipment connection module 1 is connected with the power supply equipment identification module 2 and microphone power supply equipment respectively, and the charging loop determination module 3 is used to connect the power supply equipment identification module 2 and microphone power storage equipment.

[0032] The power supply device connection module can be understood as an interface of the adaptive charging device for connecting the power supply device (a device for providing a charging current or a charging voltage for the microphone), and the interface can be a Type-C terminal, a Lightning terminal or the like. The power supply device, also known as a microphone power supply device, is used to provide a first electric energy for a wireless microphone. The first electric energy can be understood as a charging current and / or a charging voltage provided by the power supply device for the microphone, which is equivalent to the output current or the output voltage of the power supply device. The power supply device identification module is a component in the adaptive charging device for identifying the type and / or resistance value of the power supply device, i.e., for determining the device information of the microphone power supply device connected to the power supply device connection module. The device information can be understood as the type and resistance value of the power supply device. The type can be a camera, a mobile phone, a computer, a charging bull or the like. The resistance value can be a resistance value indication range of the device, which is used to determine the resistance category of the device. The charging current and / or the charging voltage that can be provided by different categories of resistance values for the microphone are different. For example, the output current of the power supply device such as a computer or a charging bull is generally less than 500 mA, the output current of a mobile phone is generally 500 mA or 300 mA, the output current of a camera is generally 100 mA or 200 mA, and the required charging current of the microphone is generally 300 mA. The utility model sets up a plurality of charging circuits for converting different charging currents into the required charging current (i.e., 300 mA) of the microphone. The charging circuit determination module is used to determine the target charging circuit of the adaptive charging device based on the device information and to turn on the target charging circuit. The target charging circuit is a circuit for converting the charging current of the current external device into 300 mA. The target charging circuit is used to convert the first electric energy into the second electric energy, which is the electric energy meeting the safe charging conditions of the microphone, i.e., the required charging current or charging voltage of the microphone. The electric energy storage device and the charging circuit determination module are connected through the electric energy storage device connection module. The electric energy storage device connection module is used to transmit the second electric energy to the electric energy storage device of the microphone, such as a circuit, a terminal or the like, so that the wireless microphone performs a charging task. The electric energy storage device of the microphone can be understood as an energy storage battery of the microphone.

[0033] The advantage of such a setting is that the output current of the external device can be determined according to the device information of the external device, and then the corresponding circuit is selected to convert it into the required charging current of the microphone. In different situations, the microphone is adaptively charged to prevent the occurrence of undercharging or overcharging when the microphone is used, thereby improving the use experience and safety of the microphone.

[0034] Figure 2 is a structural schematic view of another adaptive charging device for a wireless microphone provided by the utility model, from Figure 2As can be seen, the power supply device identification module 2 includes a resistance detection unit 21 and a type identification unit 22; the charging circuit determination module 3 includes a circuit determination unit 31, a switching control unit 32 and a candidate circuit unit 33.

[0035] The resistance detection unit is used to determine the resistance information of the microphone power supply device connected to the power supply device connection module, and the resistance information can be understood as the overall resistance of the external power supply device; the type identification unit is used to determine the type information of the microphone power supply device connected to the power supply device connection module, and since different devices can provide different currents, the type information is used to distinguish between camera, mobile phone, charging bull and other power supply devices; the resistance information and the type information are used to determine the device information, and the device information is used to determine the target charging circuit of the adaptive charging device, for example, A device information needs to use A circuit for current conversion, B device information needs to use B circuit for current conversion, C device information needs to use C circuit for current conversion, etc. The specific circuit determination work and switching work are performed by a special unit, for example, the circuit determination unit is used to determine the target charging circuit of the adaptive charging device based on the device information, and the target charging circuit is one of the charging circuits included in the candidate circuit unit; the switching control unit is used to control the opening and closing of each charging circuit in the candidate circuit unit based on the circuit information of the target charging circuit, and the adaptive device is switched to different gears in cooperation to convert different types of input current into the charging current required by the microphone.

[0036] The candidate circuit unit includes a plurality of charging circuits for converting different types of charging currents into the charging current required by the microphone, specifically, the candidate circuit unit includes a large-current charging circuit, a small-current charging circuit and a non-charging circuit.

[0037] Further, the switching control unit is specifically used for: based on the circuit information of the target charging circuit, matching in each charging circuit of the candidate circuit unit to obtain the intermediate charging circuit corresponding to the microphone power supply device; turning on the intermediate charging circuit and turning off the charging circuits in the candidate circuit unit except the intermediate charging circuit, so as to convert the first electric energy into the second electric energy meeting the safe charging condition of the microphone through the intermediate charging circuit.

[0038] Exemplarily, the charging mode is divided into a large-current charging mode, a small-current charging mode and a non-charging mode, and the three modes correspond to three gears (and three charging circuits) respectively, when the charging mode is the large-current charging mode, the large-current charging circuit is determined as the intermediate charging circuit, the large-current charging circuit is turned on, and the small-current charging circuit and the non-charging circuit are turned off. It should be noted that the opening and closing of each circuit is switched by a switch.

[0039] Figure 3 It is the first component connection relationship schematic diagram provided by the utility model, Figure 4The second component connection relation schematic diagram provided by the utility model, the charging management integrated circuit in the drawing can be understood as a charging IC, the access identification unit is used for identifying the type information of the external equipment, the resistance value detection unit is used for determining the overall resistance value of the external equipment, the switching control unit can be understood as the component of the switching circuit, including but not limited to the switch, the switching circuit module is composed of multiple charging loops, switching different charging loops can realize different degrees of current conversion, the interface circuit can be understood as the interface terminal and is used for transmitting electric energy to the energy storage equipment.

[0040] In combination Figure 3 And Figure 4 It can be seen that the switch switching unit (i.e. switching control unit + switching circuit module) can be arranged in the charging IC, the integration of the equipment is improved, the switching circuit module can also be arranged outside the charging IC and connected with the charging IC through the CC pin of the charging IC, and the external arrangement is convenient for debugging the circuit. The specific deployment mode can be selected and adjusted according to the design requirements, and the embodiment does not limit this.

[0041] Figure 5 The first switching circuit schematic diagram provided by the utility model, R1 in the drawing represents the first charging loop, R2 represents the second charging loop, and R3 represents the third charging loop, from Figure 5 It can be seen that when the candidate circuit unit includes the first charging loop, the second charging loop and the third charging loop, the first end of the first charging loop, the first end of the second charging loop and the first end of the third charging loop are all connected with the switching control unit (i.e. switching logic circuit, the circuit is controlled through the switch), the second end of the first charging loop, the second end of the second charging loop and the second end of the third charging loop are all connected with the electric energy storage equipment connection module; three gears adapt resistors of different resistance values, wherein the resistance value of the first charging loop is greater than that of the second charging loop, and the resistance value of the second charging loop is greater than that of the third charging loop.

[0042] On this basis, the switching control unit is specifically used for: when the target charging loop is a large-current charging loop, the third charging loop is turned on and the first charging loop and the second charging loop are disconnected; when the target charging loop is a small-current charging loop, the second charging loop is turned on and the first charging loop and the third charging loop are disconnected; when the target charging loop is a non-charging loop, the first charging loop is turned on and the second charging loop and the third charging loop are disconnected, or the first charging loop, the second charging loop and the third charging loop are disconnected. The purpose of such arrangement is to use different circuits to adaptively convert different charging currents and realize self-adaptive charging.

[0043] Figure 6is the second switching circuit schematic diagram provided by the utility model, R4 in drawing indicates fourth charging loop, R5 indicates fifth charging loop, GND indicates ground, from Figure 6 It can be seen that when the candidate circuit unit includes the fourth charging loop and the fifth charging loop, the first end of the fourth charging loop is connected to the first end of the circuit determination unit and the switching control unit respectively, the second end of the fourth charging loop is connected to the first end of the fifth charging loop and the second end of the switching control unit respectively, and the second end of the fifth charging loop is connected to the power storage device connection module. The connection relationship is also adjusted by the switching of the switch to adjust the charging current gear.

[0044] The resistance value of the fourth charging loop is much larger than that of the fifth charging loop, for example, the resistance value i of the fourth charging loop is greater than the resistance value j of the fifth charging loop and i=j*k, wherein k is greater than 1, and the specific value of k is not limited in the embodiment.

[0045] The adaptive charging process mainly includes: 1) detecting the resistance value of the external device connected through the IC pin; 2) determining the type of the external device, for example, determining whether the external device is a hot shoe, determining whether the external device is a camera, determining whether the external device is a computer, etc.; 3) determining whether to switch the circuit connection, which is equivalent to determining the charging loop that needs to be turned on; 4) selecting the charging module according to the current connection, and the charging mode includes but is not limited to the large current mode, the small current mode and the non-charging mode; 5) determining the connection relationship to maintain the normal operation of the external device and the microphone.

[0046] The technical scheme of the embodiment can adjust the circuit structure of the adaptive charging device according to the device information of the external device, convert the charging current or charging voltage provided by the external device that does not meet the microphone into appropriate current or voltage, safely and stably charge the microphone, and ensure the safety of the microphone and the external device. The problems of charging the microphone with the external device, the difference between the working current and the output current of different devices, the non-charging or overcharging situation if the charging current of the power supply device connected to the microphone does not match the microphone, and the influence on the normal operation of the microphone and the power supply device are solved.

[0047] The utility model also provides a wireless microphone's adaptive charging system, and the embodiment can be applied to precise control of charging current, multi-scene charging of wireless microphone and adaptive charging and the like. The system comprises: a microphone power storage device, a microphone power supply device and any one of the adaptive charging devices of the wireless microphone in the above embodiment; wherein the adaptive charging device of the wireless microphone is connected to the microphone power storage device and the microphone power supply device respectively.

[0048] Specifically, the microphone power storage device can be understood as a power storage component of the microphone, including but not limited to an energy storage battery, and the microphone power supply device can be understood as an external device for providing power to the microphone, including but not limited to a power bank, an external power supply, a camera, a mobile phone, and a computer.

[0049] The adaptive charging system of the wireless microphone in the embodiment includes the adaptive charging device of any one of the wireless microphone in the above embodiments. After the microphone is connected to the external device, the circuit structure of the adaptive charging device can be adjusted according to the device information of the external device, and the charging current or charging voltage that does not meet the microphone provided by the external device is converted into appropriate current or voltage, so that the microphone is safely and stably charged, and the safety of the microphone and the external device is ensured. The problems such as that the microphone is not charged or overcharged, and the normal operation of the microphone and the power supply device is affected, if the charging current of the microphone does not match the power supply device connected to the microphone, due to the difference in working current and output current of different devices, are solved. Further, the adaptive charging system of the wireless microphone provided in the embodiment includes the adaptive charging device of the wireless microphone in the above embodiments, and has the corresponding beneficial effects of the adaptive charging device of the wireless microphone.

[0050] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, and the present application does not limit this.

[0051] The above specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An adaptive charging device for a wireless microphone, characterized in that, include: The system includes a power supply device connection module, a power supply device identification module, and a charging circuit determination module. The power supply device connection module is connected to the power supply device identification module and the microphone power supply device, and the charging circuit determination module is used to connect the power supply device identification module and the microphone energy storage device. The power supply device identification module is used to determine the device information of the microphone power supply device connected to the power supply device connection module, wherein the microphone power supply device is used to provide first power to the wireless microphone; The charging circuit determination module is used to determine the target charging circuit of the adaptive charging device based on the device information, and to activate the target charging circuit so that the wireless microphone can perform a charging task; wherein, the target charging circuit is used to convert the first electrical energy into second electrical energy, and the second electrical energy is electrical energy that meets the microphone's safe charging conditions.

2. The adaptive charging device according to claim 1, characterized in that, The power supply equipment identification module includes a resistance detection unit and a type identification unit; The resistance detection unit is used to determine the resistance information of the microphone power supply device connected to the power supply device connection module; The type identification unit is used to determine the type information of the microphone power supply device connected to the power supply device connection module; The resistance information and the type information are used to determine the device information.

3. The adaptive charging device according to claim 1, characterized in that, The charging circuit determination module includes a circuit determination unit, a switching control unit, and a candidate circuit unit; The circuit determination unit is used to determine the target charging circuit of the adaptive charging device based on the device information, wherein the target charging circuit is one of the charging circuits included in the candidate circuit unit; The switching control unit is used to control the opening and closing of each charging circuit in the candidate circuit unit based on the circuit information of the target charging circuit.

4. The adaptive charging device according to claim 3, characterized in that, The switching control unit is specifically used for: Based on the loop information of the target charging loop, the intermediate charging loop corresponding to the microphone power supply device is obtained by matching each charging loop of the candidate circuit unit. The intermediate charging circuit is turned on, and the charging circuits in the candidate circuit unit other than the intermediate charging circuit are turned off, so that the first electrical energy is converted into the second electrical energy that meets the microphone's safe charging conditions through the intermediate charging circuit.

5. The adaptive charging device according to claim 3, characterized in that, The candidate circuit units include a high-current charging circuit, a low-current charging circuit, and a non-charging circuit.

6. The adaptive charging device according to claim 5, characterized in that, The microphone power storage device and the charging circuit determination module are connected through the power storage device connection module; When the candidate circuit unit includes a first charging circuit, a second charging circuit, and a third charging circuit, the first end of the first charging circuit, the first end of the second charging circuit, and the first end of the third charging circuit are all connected to the switching control unit, and the second end of the first charging circuit, the second end of the second charging circuit, and the second end of the third charging circuit are all connected to the energy storage device connection module. The resistance of the first charging circuit is greater than that of the second charging circuit, and the resistance of the second charging circuit is greater than that of the third charging circuit.

7. The adaptive charging device according to claim 6, characterized in that, The switching control unit is specifically used for: When the target charging circuit is the high-current charging circuit, the third charging circuit is turned on and the first charging circuit and the second charging circuit are turned off. When the target charging circuit is the low-current charging circuit, the second charging circuit is turned on and the first charging circuit and the third charging circuit are turned off. When the target charging circuit is the non-charging circuit, the first charging circuit is turned on and the second charging circuit and the third charging circuit are turned off, or the first charging circuit, the second charging circuit and the third charging circuit are turned off.

8. The adaptive charging device according to claim 6, characterized in that, When the candidate circuit unit includes a fourth charging circuit and a fifth charging circuit, the first end of the fourth charging circuit is connected to the first end of the circuit determining unit and the first end of the switching control unit, the second end of the fourth charging circuit is connected to the first end of the fifth charging circuit and the second end of the switching control unit, and the second end of the fifth charging circuit is connected to the energy storage device connection module.

9. The adaptive charging device according to claim 8, characterized in that, The resistance i of the fourth charging circuit is greater than the resistance j of the fifth charging circuit.

10. An adaptive charging system for a wireless microphone, characterized in that, include: Microphone power storage device, microphone power supply device, and adaptive charging device for a wireless microphone as described in any one of claims 1 to 9; The adaptive charging device for the wireless microphone is connected to both the microphone power storage device and the microphone power supply device.

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