CN108649672A - Wireless charging circuit and wearable device - Google Patents

Wireless charging circuit and wearable device Download PDF

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Publication number
CN108649672A
CN108649672A CN201810387708.5A CN201810387708A CN108649672A CN 108649672 A CN108649672 A CN 108649672A CN 201810387708 A CN201810387708 A CN 201810387708A CN 108649672 A CN108649672 A CN 108649672A
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CN
China
Prior art keywords
circuit
wireless charging
coil
wearable device
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810387708.5A
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Chinese (zh)
Inventor
张伟正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN201810387708.5A priority Critical patent/CN108649672A/en
Publication of CN108649672A publication Critical patent/CN108649672A/en
Pending legal-status Critical Current

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Classifications

    • H02J7/025
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1025Accumulators or arrangements for charging

Abstract

This application discloses a kind of wireless charging circuit and wearable device, wireless charging circuit is set to wearable device, and wireless charging circuit includes:Receiving coil, the first rectification circuit, the first filter circuit and battery;Receiving coil connects the input terminal of the first rectification circuit, and the output end of the first rectification circuit connects the input terminal of the first filter circuit, and the output end of the first filter circuit connects battery;Receiving coil is used to receive the electromagnetic energy that the transmitting coil of energy emitting device is sent, and for electromagnetic energy to be converted to high-frequency ac voltage;First rectification circuit is used to high-frequency ac voltage being converted to the first initial DC voltage;First filter circuit is used to the first initial DC voltage being converted to the first stable DC voltage output to battery.The space availability ratio of wearable device can be improved using the embodiment of the present application.

Description

Wireless charging circuit and wearable device
Technical field
This application involves electronic technology field more particularly to a kind of wireless charging circuits and wearable device.
Background technology
With the maturation of wireless technology, the scene that smart mobile phone connects wearable device by wireless technology is more and more. For example, user can be realized by wearable device listen to music the functions such as make a phone call.For example, for wireless headset, it is general at present Charging interface is arranged on wireless headset to charge, not only influences the appearance of wearable device in this way, but also charging interface accounts for The volume of wearable device may be caused to increase with excessive space.
Invention content
A kind of wireless charging circuit of the embodiment of the present application offer and wearable device, can improve the space of wearable device Utilization rate.
In a first aspect, the embodiment of the present application provides a kind of wireless charging circuit, the wireless charging circuit, which is set to, to be worn Equipment is worn, the wireless charging circuit includes:Receiving coil, the first rectification circuit, the first filter circuit and battery;
The receiving coil connects the input terminal of first rectification circuit, the output end connection of first rectification circuit The output end of the input terminal of first filter circuit, first filter circuit connects the battery;
The receiving coil is used to receive the electromagnetic energy that the transmitting coil of energy emitting device is sent, and is used for institute It states electromagnetic energy and is converted to high-frequency ac voltage;
First rectification circuit is used to the high-frequency ac voltage being converted to the first initial DC voltage;
First filter circuit is used to the first initial DC voltage being converted to the first stable DC voltage output To the battery.
Second aspect, the embodiment of the present application provide a kind of wearable device, and the wearable device includes shell, loud speaker Any one wireless charging circuit of component and the embodiment of the present application first aspect, the loudspeaker assembly include speaker wire Circle, magnet and vibrating diaphragm, the loudspeaker assembly are fixed in the shell.
In the embodiment of the present application, wireless charging circuit is set to wearable device, and wireless charging circuit includes:Receive line Circle, the first rectification circuit, the first filter circuit and battery;Receiving coil connects the input terminal of the first rectification circuit, the first rectification The output end of circuit connects the input terminal of the first filter circuit, and the output end of the first filter circuit connects battery;Receiving coil is used In the electromagnetic energy that the transmitting coil for receiving energy emitting device is sent, and for electromagnetic energy to be converted to high-frequency alternating current Pressure;First rectification circuit is used to high-frequency ac voltage being converted to the first initial DC voltage;First filter circuit is used for the One initial DC voltage is converted to the first stable DC voltage output to battery.Wireless charging circuit may be used in wearable device Wireless charging is carried out, charges it is not necessary that charging interface is arranged on wearable device, can greatly save wearable device Space, to improve the space availability ratio of wearable device.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.
Fig. 1 a are a kind of network architecture schematic diagrames disclosed in the embodiment of the present application;
Fig. 1 b are a kind of structural schematic diagrams of wearable device disclosed in the embodiment of the present application;
Fig. 2 is a kind of wireless charging circuit disclosed in the embodiment of the present application;
Fig. 3 is that the application implements reception line in the disclosed a kind of transmitting coil and wearable device of energy emitting device Energy transmission principle schematic between circle;
Fig. 4 is another wireless charging circuit disclosed in the embodiment of the present application;
Fig. 5 is the structural schematic diagram of another wearable device disclosed in the embodiment of the present application;
Fig. 6 is another wireless charging circuit disclosed in the embodiment of the present application;
Fig. 7 is the structural schematic diagram of another wearable device disclosed in the embodiment of the present application;
Fig. 8 is the structural schematic diagram of another wearable device disclosed in the embodiment of the present application;
Fig. 9 is a kind of structural schematic diagram of energy emitting device disclosed in the embodiment of the present application.
Specific implementation mode
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application Attached drawing, technical solutions in the embodiments of the present application are clearly and completely described, it is clear that described embodiment is only The embodiment of the application part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people The every other embodiment that member is obtained without making creative work should all belong to the model of the application protection It encloses.
It is described in detail separately below.
Term " first ", " second ", " third " in the description and claims of this application and the attached drawing and " Four " etc. be for distinguishing different objects, rather than for describing particular order.In addition, term " comprising " and " having " and it Any deformation, it is intended that cover and non-exclusive include.Such as it contains the process of series of steps or unit, method, be The step of system, product or equipment are not limited to list or unit, but further include the steps that optionally not listing or list Member, or further include optionally for the intrinsic other steps of these processes, method, product or equipment or unit.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and Implicitly understand, embodiment described herein can be combined with other embodiments.
Electronic device may include various handheld devices with wireless communication function, mobile unit, wearable device, meter It calculates equipment or is connected to other processing equipments of radio modem and various forms of user equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal device (terminal device) etc..For convenience Description, apparatus mentioned above are referred to as electronic device.
It describes in detail below to the embodiment of the present application.
A is please referred to Fig.1, Fig. 1 a are a kind of network architecture schematic diagrames disclosed in the embodiment of the present application.The net shown in Fig. 1 a May include wearable device 10 and electronic device 20, wherein wearable device 10 can pass through wireless network in network framework (for example, bluetooth, infrared ray or WiFi) is communicated to connect with electronic device 20.It should be noted that the quantity of wearable device 10 Can be one or more, the embodiment of the present application is not construed as limiting.Wearable device 10 can send pairing request to electronic device 20, Electronic device 20 can receive the pairing request sent by wearable device 10 and be matched.Optionally, as shown in Figure 1a, wearable Equipment 10 can also establish wireless communication connection with energy emitting device 30, when wearable device 10 and energy emitting device 30 connect After being connected into work(, energy emitting device 30 can be to wearable device emitted energy, to realize the wireless charging to wearable device.
Wearable device in the embodiment of the present application may include any wearable device that can carry out audio broadcasting, than Such as, wireless headset.For convenience of description, the wearable device in embodiment below is all illustrated by taking wireless headset as an example.
Wherein, wireless headset can be clip-on type earphone, or PlayGear Stealth, or headphone, The embodiment of the present application does not limit.
Wireless headset can be accommodated in Earphone box, and Earphone box may include:Two receiving cavities (the first receiving cavity and second Receiving cavity), the size and shape of two receiving cavities is designed to receive a pair of of wireless headset (the first wireless headset and second wireless Earphone);The one or more earphone outer covering magnetic parts being arranged in box, said one or multiple earphone outer covering magnetic parts are used In by a pair of of wireless headset magnetic attraction and magnetic fixed in two receiving cavities respectively.Earphone box can also include ear cap. Wherein, the size and shape of the first receiving cavity is designed to receive the first wireless headset, the size and shape design of the second receiving cavity At receiving the second wireless headset.
The battery for the recyclable charging that wireless headset may include earphone outer covering, be arranged in earphone outer covering is (for example, lithium is electric Pond), the loud speakers of multiple hard contacts including actuator unit and direct sound port for connecting battery and charging unit Component, wherein actuator unit includes magnet, voice coil and vibrating diaphragm, and actuator unit is used to make a sound from direct sound port, The outer surface in earphone outer covering is arranged in above-mentioned multiple hard contacts.
In one possible implementation, wireless headset can also include Petting Area, which can be located in ear The outer surface of machine shell is provided at least one touch sensor in Petting Area, for detecting touch operation, touch sensor It may include capacitance sensor.When user touches Petting Area, at least one capacitance sensor can detect selfcapacity Variation is to identify touch operation.
In one possible implementation, wireless headset can also include acceleration transducer and three-axis gyroscope, add Velocity sensor and three-axis gyroscope can be arranged in earphone outer covering, acceleration transducer and three-axis gyroscope for identification without The pick-up of line earphone and remove action.
In one possible implementation, wireless headset can also include at least one baroceptor, air pressure sensing Device can be arranged on the surface of earphone outer covering, for the air pressure in detection ear after wireless headset wearing.Air pressure sensing can be passed through Device detects the wearing elasticity of wireless headset.When detect wireless headset wear it is more loose when, wireless headset can to wireless ear The electronic device of machine connection sends prompt message, to prompt user's wireless headset to fall risk.
B is please referred to Fig.1, Fig. 1 b are a kind of structural schematic diagrams of wearable device disclosed in the embodiment of the present application, wearable Equipment 10 includes storage and processing circuit 710, and the telecommunication circuit 720 and sound being connect with the storage and processing circuit 710 Frequency component 740, wherein in some specific wearable devices 10, display module 730 or touch control component can also be set.
Wearable device 10 may include control circuit, which may include storage and processing circuit 710.This is deposited Storage and processing circuit 710 can be with memories, such as hard drive memory, and nonvolatile memory (such as flash memory or is used for shape At other electrically programmable read only memories etc. of solid state drive), volatile memory (such as either statically or dynamically arbitrary access Memory etc.) etc., the embodiment of the present application is not restricted.Processing circuit in storage and processing circuit 710, which can be used for controlling, to be worn Wear the operating of equipment 10.The processing circuit can microprocessor based on one or more, microcontroller, digital signal processor, Baseband processor, power management unit, audio codec chip, application-specific integrated circuit, display-driver Ics etc. come It realizes.
Storage and processing circuit 710 can be used for running the software in wearable device 10, such as voice over internet protocol (Voice over Internet Protocol, VOIP) call application program, simultaneous interpretation function, media play application Program, operation system function etc..These softwares can be used for executing some control operations, for example, the image based on camera is adopted Collection, the ambient light measurement based on ambient light sensor, the proximity sensor based on proximity sensor measure, based on such as luminous two The information display function that the positioning indicators such as the status indicator lamp of pole pipe are realized, the touch event detection based on touch sensor, Operation associated with wireless communication function is executed, operation associated with collecting and generating audio signal, with collection and processing Other functions etc. in the associated control operation of button press event data and wearable device 10, the embodiment of the present application It is not restricted.
Wearable device 10 can also include input-output circuit 750.Input-output circuit 750 can be used for making wearable Equipment 10 realizes outputting and inputting for data, that is, allows wearable device 10 to allow from outer equipment receiving data and also wearable Equipment 10 exports data to external equipment from wearable device 10.Input-output circuit 750 may further include sensor 770.Sensor 770 may include ambient light sensor, and the proximity sensor based on light and capacitance, touch sensor is (for example, base In light touch sensor and/or capacitive touch sensors, wherein touch sensor can be a part for touching display screen, A touch sensor arrangement is can also be used as independently to use), acceleration transducer and other sensors etc..
Input-output circuit 750 (can also be shown including touch sensor array that is, display 730 can be touch-control Screen).Touch sensor can be the electricity formed by transparent touch sensor electrode (such as tin indium oxide (ITO) electrode) array Appearance formula touch sensor, or can be the touch sensor formed using other touching techniques, such as sound wave touch-control, it is pressure-sensitive to touch It touches, resistive touch, optical touch etc., the embodiment of the present application is not restricted.
Wearable device 10 can also include audio component 740.Audio component 740 can be used for carrying for wearable device 10 For audio input and output function.Audio component 740 in wearable device 10 may include loud speaker, microphone, buzzer, Tone generator and other components for generating and detecting sound.
Telecommunication circuit 720 can be used for providing the ability with external device communication for wearable device 10.Telecommunication circuit 720 can To include analog- and digital- input-output interface circuit, and the radio communication circuit based on radiofrequency signal and/or optical signal.It is logical Letter circuit 720 in radio communication circuit may include radio-frequency transceiver circuitry, power amplifier circuit, low-noise amplifier, Switch, filter and antenna.For example, the radio communication circuit in telecommunication circuit 720 may include for by transmitting and Near-field coupling electromagnetic signal is received to support the circuit of near-field communication (Near Field Communication, NFC).For example, Telecommunication circuit 720 may include near-field communication aerial and near-field communication transceiver.Telecommunication circuit 720 can also include cellular phone Transceiver and antenna, wireless lan transceiver circuit and antenna etc..
Wearable device 10 can further include battery, power management circuitry and other input-output units 760. Input-output unit 760 may include button, control stick, click wheel, scroll wheel, touch tablet, keypad, keyboard, camera, Light emitting diode or other positioning indicators etc..
User can input a command for the operation of control wearable device 10 by input-output circuit 750, and can be with Using the output data of input-output circuit 750 status information and other outputs from wearable device 10 are received to realize.
Referring to Fig. 2, Fig. 2 is a kind of wireless charging circuit 100, wireless charging circuit 100 disclosed in the embodiment of the present application It may be disposed in the wearable device 10 of Fig. 1 a, wireless charging circuit 100 may include receiving coil 11, the first rectification circuit 12, the first filter circuit 13 and battery 14;
Receiving coil 11 connects the input terminal 121 of the first rectification circuit 12, and the output end 122 of the first rectification circuit 12 connects The output end 132 of the input terminal 131 of first filter circuit 13, the first filter circuit 13 connects battery 14;
Receiving coil 11 is used to receive the electromagnetic energy that the transmitting coil of energy emitting device is sent, and is used for electromagnetism Energy is converted to high-frequency ac voltage;
First rectification circuit 12 is used to high-frequency ac voltage being converted to the first initial DC voltage;
First filter circuit 13 is used to the first initial DC voltage being converted to the first stable DC voltage output to battery 14。
In the embodiment of the present application, receiving coil 11 is used to receive the transmitting coil of energy emitting device for emitting electromagnetic energy Amount.The transmitting coil of energy emitting device can be by electromagnetic energy transfer to receiving coil 11.The emission lines of energy emitting device The energy transmission principle between receiving coil 11 in circle and wearable device 10 is as shown in Figure 3.When galvanization in transmitting coil When, the magnetic field of transmitting coil generates corresponding induced current by receiving coil in receiving coil, to realize transmitting coil Energy transmission between receiving coil.
Battery 14 is rechargeable batteries, such as lithium battery.
In the embodiment of the present application, wearable device may be used wireless charging circuit and carry out wireless charging, without can Charging interface is arranged on wearable device to charge, can greatly save the space of wearable device, it is wearable to improve The space availability ratio of equipment.
It is understood that the output of the first rectification circuit 12 input terminal 121, the first rectification circuit 12 in above-mentioned Fig. 2 The output end 132 of the input terminal 131, the first filter circuit 13 of holding the 122, first filter circuit 13 is a kind of rough schematic. In actual circuit, the first rectification circuit 12, the first filter circuit 13 all have positive and negative two ports, battery 14 also to have anode And cathode, receiving coil 11 can also have coil anode and coil negative terminal.Due in receiving coil 11 by electric current be generally Alternating current, coil anode and coil negative terminal do not do stringent differentiation.
Optionally, referring to Fig. 4, Fig. 4 is another wireless charging circuit disclosed in the embodiment of the present application.As shown in figure 4, The input terminal 121 of first rectification circuit 12 includes positive input terminal 1211 and negative input end 1212;The output of first rectification circuit 12 End 122 includes positive output end 1221, negative output terminal 1222, and the input terminal 131 of the first filter circuit 13 includes positive input terminal 1311 With negative input end 1312;The output end 132 of first filter circuit 13 includes positive output end 1321, negative output terminal 1322;Receive line Circle 11 includes coil anode 111 and coil negative terminal 112, and battery 14 includes anode 141 and cathode 142.
Wherein, coil anode 111 connects the positive input terminal 1211 of the first rectification circuit 12, the connection of coil negative terminal 112 first The positive output end 1221 of the negative input end 1212 of rectification circuit 12, the first rectification circuit 12 connects the just defeated of the first filter circuit 13 Enter end 1311, the negative output terminal 1222 of the first rectification circuit 12 connects the negative input end 1312 of the first filter circuit 13, the first filter The positive output end 1321 of wave circuit 13 connects the anode 141 of battery 14, and the negative output terminal 1322 of the first filter circuit 13 connects electricity The cathode 142 in pond 14.
In the embodiment of the present application, it is alternating current, the first rectification to be transmitted between receiving coil 11 and the first rectification circuit 12 It is direct current to be transmitted between circuit 12, the first filter circuit 13 and battery 14.
Optionally, the first rectification circuit 12 includes bridge rectifier.
Optionally, the first filter circuit 13 includes capacitor filter or RC filter circuits.
Optionally, referring to Fig. 5, Fig. 5 is the structural schematic diagram of another wearable device disclosed in the embodiment of the present application, As shown in figure 5, wearable device 10 is other than including wireless charging circuit 100 shown in Fig. 2, further include loudspeaker assembly 300,
Loudspeaker assembly 300 includes loudspeaker coil 301, and loudspeaker coil 301 is arranged the one of loudspeaker assembly 300 The other side far from loudspeaker coil 301 is arranged in loudspeaker assembly 300 in side, receiving coil 11.
In the embodiment of the present application, receiving coil 11 can be arranged in loudspeaker assembly 300, can utilize existing raise one's voice Receiving coil 11 is arranged in the space of device assembly, further saves the space availability ratio of wearable device 10.For example, can will connect Take-up circle 11 is wrapped on loudspeaker assembly 300.In addition, separate raise one's voice is arranged in loudspeaker assembly 300 in receiving coil 11 The other side of device coil 301 can reduce the interference between loudspeaker coil 301 and receiving coil 11, improve loudspeaker assembly The fidelity of 300 audios played.
Optionally, receiving coil 11 can also be wrapped in the shell of wearable device 10, the coil anode of receiving coil 11 111 and coil negative terminal 112 can enter enclosure by the hole opened up on shell and be connect with the first rectification circuit 12;Receive line Circle 11 can be fixed on the shell of wearable device 10, and insulating layer can be arranged in the surface of receiving coil 11, prevent from receiving line Circle 11 receives outside electromagnetic interference.
Optionally, as shown in fig. 6, wireless charging circuit 100 further includes the first controller 15 and detection circuit 16, detection electricity Road 16 connects the first controller 15;
Detection circuit 16 is used to detect the charging current of battery 14, and for detecting filling for battery 14 when detection circuit When electric current is more than predetermined current threshold, current anomaly signal is sent to the first controller 15;
First controller 15 sends a notification message according to current anomaly signal to energy emitting device 30, and notification message is used for Energy emitting device 30 is notified to stop energy transmitting.
Optionally, detection circuit 16 be additionally operable to detection battery 14 whether charging complete, when detecting 14 charging complete of battery When, send charging completion signal to the first controller 15;
First controller 15 sends a notification message according to charging completion signal to energy emitting device 30.
In the embodiment of the present application, detection circuit 16 may include detection resistance and voltage comparator, and detection resistance is connected in series to In the charge circuit of battery 14, voltage comparator is used to compare the size of the voltage and reference voltage at detection resistance both ends, works as inspection Measure detection resistance both ends voltage be more than reference voltage when, output current abnormal signal (for example, high level signal) to the One controller 15 allows the first controller 15 notice energy emitting device 30 to stop energy transmitting, can be automatic when electric current is excessive It is protected, prevents from causing receiving coil 11 to be burned due to 30 operation irregularity of energy emitting device.Optionally, the first controller 15 can connect with the first rectification circuit 12, and the first controller 15 sends according to current anomaly signal to energy emitting device 30 logical After knowing message, the first controller 15 can also control the disconnection of the first rectification circuit, so that receiving coil 11 stops to battery 14 Power supply, after receiving the notification message working properly of the transmission of energy emitting device 30, control the first rectification circuit connection allows Receiving coil 11 continues to power to battery 14.
First controller 15 can be microprocessor (Microcontroller Unit, MCU).
Optionally, referring to Fig. 7, Fig. 7 is the structural schematic diagram of another wearable device disclosed in the embodiment of the present application. As shown in fig. 7, wearable device 10 can also include audio playing circuit 17, audio playing circuit 17 includes audio receiving circuit 171 and power amplifier 172;Wearable device 10 establishes wireless communication connection with electronic device 20.
Audio receiving circuit 1701 is used to receive audio signal from electronic device 20 and demodulates audio signal, obtains Audio signal after demodulation;
Power amplifier 1702 exports after being used to the audio signal after demodulation being amplified to loudspeaker coil 301.
In the embodiment of the present application, wearable device 10 (for example, wireless headset) is matched with electronic device 20 (for example, mobile phone) Success, and establish wireless communication connection (for example, bluetooth connection) after, electronic device 20 can to wearable device 10 send modulate Audio signal afterwards, audio receiving circuit 1401 receive audio signal from electronic device 20 and demodulate audio signal, obtain Audio signal after to demodulation, power amplifier 1402 export after being amplified the audio signal after demodulation to loudspeaker coil 301, so that loudspeaker coil 301 makes a sound.
Wherein, loudspeaker coil 301 can be moving-iron type sounding, can also be moving-coil type sounding, the embodiment of the present application is not It limits.
Please refer to the structural schematic diagram that 8, Fig. 8 is another wearable device disclosed in the embodiment of the present application.Such as Fig. 8 institutes Show, wearable device 10 includes shell 200, loudspeaker assembly 300 and wireless charging circuit 100, and loudspeaker assembly 300 includes raising Sound device coil, magnet and vibrating diaphragm, loudspeaker assembly 300 are fixed in shell 200.Wherein, magnet can be permanent magnet, forever The material of magnet can be ferrite permanent-magnet materials.
In the embodiment of the present application, if the loudspeaker assembly 300 of wearable device 10 is moving-coil type principle of sound, raise one's voice Device coil is connect with vibrating diaphragm, then after galvanization in loudspeaker coil, the generation magnetic field in loudspeaker coil is generated with magnet Magnetic field act power, drive vibrating diaphragm sounding.
Wherein, receiving coil 11 can receive the electromagnetic energy of the transmission of energy emitting device 30.Wearable device 10 receives The audio signal that electronic device 20 is sent plays audio.
Optionally, as shown in figure 9, energy emitting device 30 includes the second rectification circuit 31, the second filter circuit 32, high frequency Inverter circuit 33, transmitting coil 34 and second controller 35;Second controller 35 can be microprocessor (Microcontroller Unit, MCU).
Second rectification circuit 31 is used to alternating current being converted to initial DC voltage;Wherein, alternating current can be alternating current (ratio Such as, 220V, 50Hz).
Second filter circuit 32 is used to initial DC voltage becoming stable DC voltage;
High-frequency inverter circuit 33 is used to stable DC voltage converting high-frequency alternating current (for example, frequency is 100K- 200KHz), high-frequency alternating current is for driving transmitting coil 34 to emit electromagnetic energy;
Second controller 35 is connect with high-frequency inverter circuit 33, and second controller 35 is for controlling whether transmitting coil 34 is sent out Radio magnetic energy, and transmitting coil 34 emit electromagnetic energy when control transmitting coil 34 emit electromagnetic energy size.
Wherein, between the second filter circuit 32 and high-frequency inverter circuit 33, DC-DC reduction voltage circuits, DC- can also be increased DC reduction voltage circuits are used to High Level DC Voltage being converted to low dc voltage (for example, 5V), can improve energy emitting device 30 Stability.The energy that transmitting coil 34 emits can be received by the receiving coil 11 of wearable device 10.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, it may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed device, it can be by another way It realizes.For example, the apparatus embodiments described above are merely exemplary, for example, said units division, it is only a kind of Division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or can To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual Coupling, direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, Can be electrical or other forms.
The above-mentioned unit illustrated as separating component may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme 's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
The embodiment of the present application is described in detail above, specific case used herein to the principle of the application and Embodiment is expounded, the description of the example is only used to help understand the method for the present application and its core ideas; Meanwhile for those of ordinary skill in the art, according to the thought of the application, can in specific implementation and application range There is change place, to sum up above-mentioned, the contents of this specification should not be construed as limiting the present application.

Claims (10)

1. a kind of wireless charging circuit, which is characterized in that the wireless charging circuit is set to wearable device, the wireless charging Circuit includes:Receiving coil, the first rectification circuit, the first filter circuit and battery;
The receiving coil connects the input terminal of first rectification circuit, described in the output end connection of first rectification circuit The output end of the input terminal of first filter circuit, first filter circuit connects the battery;
The receiving coil is used to receive the electromagnetic energy that the transmitting coil of energy emitting device is sent, and is used for the electricity Magnetic energy is converted to high-frequency ac voltage;
First rectification circuit is used to the high-frequency ac voltage being converted to the first initial DC voltage;
First filter circuit is used to the first initial DC voltage being converted to the first stable DC voltage output to institute State battery.
2. wireless charging circuit according to claim 1, which is characterized in that the wearable device further includes loud speaker group Part, loudspeaker assembly include loudspeaker coil, and the loudspeaker coil is arranged in the side of the loudspeaker assembly, the reception The other side far from the loudspeaker coil is arranged in the loudspeaker assembly in coil.
3. wireless charging circuit according to claim 1, which is characterized in that the receiving coil is wrapped in described wearable The shell of equipment.
4. according to claim 1-3 any one of them wireless charging circuits, which is characterized in that the first rectification circuit includes bridge-type Rectification circuit.
5. according to claim 1-4 any one of them wireless charging circuits, which is characterized in that first filter circuit includes Capacitor filter or RC filter circuits.
6. according to claim 1-5 any one of them wireless charging circuits, which is characterized in that the wireless charging circuit also wraps The first controller and detection circuit are included, the detection circuit connects first controller;
The detection circuit is used to detect the charging current of the battery, and detects the electricity for working as the detection circuit When the charging current in pond is more than predetermined current threshold, current anomaly signal is sent to first controller;
First controller according to the current anomaly signal to energy emitting device for sending a notification message, the notice Message is for notifying the energy emitting device to stop energy transmitting.
7. wireless charging circuit according to claim 6, which is characterized in that
The detection circuit be additionally operable to detect the battery whether charging complete, and for when detecting that the battery has charged Cheng Shi sends charging completion signal to first controller;
First controller is used to send the notification message to energy emitting device according to the charging completion signal.
8. a kind of wearable device, which is characterized in that including shell, loudspeaker assembly and as described in claim any one of 1-7 Wireless charging circuit, the loudspeaker assembly includes loudspeaker coil, magnet and vibrating diaphragm, the loudspeaker assembly fixed setting In the shell.
9. wearable device according to claim 8, which is characterized in that the wearable device passes through the wireless charging Receiving coil in circuit receives the electromagnetic energy that energy emitting device transmits.
10. wearable device according to claim 9, which is characterized in that the energy emitting device includes the second rectification Circuit, the second filter circuit, high-frequency inverter circuit, transmitting coil and second controller;
Second rectification circuit is used to alternating current being converted to the second initial DC voltage;
Second filter circuit is used to the second initial DC voltage becoming the second stable DC voltage;
The high-frequency inverter circuit is used to the second stable DC voltage converting high-frequency alternating current, and the high-frequency alternating current is used Emit electromagnetic energy in driving the transmitting coil;
The second controller emits for controlling whether the transmitting coil emits electromagnetic energy, and in the transmitting coil The size of the electromagnetic energy of the transmitting coil transmitting is controlled when electromagnetic energy.
CN201810387708.5A 2018-04-26 2018-04-26 Wireless charging circuit and wearable device Pending CN108649672A (en)

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