CN106878853A - Charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology - Google Patents
Charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology Download PDFInfo
- Publication number
- CN106878853A CN106878853A CN201710173505.1A CN201710173505A CN106878853A CN 106878853 A CN106878853 A CN 106878853A CN 201710173505 A CN201710173505 A CN 201710173505A CN 106878853 A CN106878853 A CN 106878853A
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- Prior art keywords
- electric energy
- bluetooth earphone
- circuit
- power transmission
- wireless power
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- 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.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 230000008878 coupling Effects 0.000 title claims abstract description 19
- 238000010168 coupling process Methods 0.000 title claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 19
- 230000006698 induction Effects 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 8
- 230000033228 biological regulation Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 101001010782 Drosophila melanogaster Fez family zinc finger protein erm Proteins 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1025—Accumulators or arrangements for charging
-
- H02J7/025—
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Charging bluetooth earphone, including the electric energy transmitting circuit that headset body and induction range are 0 60cm are exempted from based on magnetic coupling wireless power transmission technology the invention discloses a kind of；Bluetooth earphone body includes two connectors of individual earphones of two individual earphones and connection；Individual earphones coordinate human body ear to be provided with ear muff, chargeable lithium cell, electric energy receiving circuit and rectifying and pressure-regulating system are provided with individual earphones, electric energy receiving circuit receives the electric energy of electric energy transmitting circuit, and by rectifying and pressure-regulating system by electrical energy transportation to chargeable lithium cell, chargeable lithium cell provides operating voltage for bluetooth earphone functional circuit.The wireless Bluetooth headsets carry out wireless charging to lithium battery by magnetic coupling wireless power transmission technology, and for the intrinsic part of wireless Bluetooth headsets is powered；Periodic charge is avoided the need for, and due to the constraint of charging wire when charging, the normal shortcoming for using of inconvenience.
Description
Technical field
The invention discloses a kind of bluetooth earphone, more particularly to a kind of exempting from based on magnetic coupling wireless power transmission technology charge it is blue
Tooth earphone.
Background technology
One of important external equipment of earphone computer and mobile phone the most, for daily life provides convenience,
Also very big effect is played in our learning life.But earphone line brings very big inconvenience, and fragile.With nothing
The development of line signal transmission technology, the technology of bluetooth earphone tends towards stability, and earphone has been broken away from the constraint of earphone cord, in distance electricity
In the range of brain or mobile phone certain distance, can also stablize and transmit.Although bluetooth earphone breaks away from the constraint of earphone cord, but needs periodically
Due to the constraint of charging wire when charging, and charging, inconvenience is normally used.
According to electric energy transmission principle, wireless power transmission can generally be divided three classes:The first kind is transformer principle
Direct coupling type, this mode power is although larger, but is only suitable to closely；Equations of The Second Kind electric wave wireless energy transmission technology,
Although the principle that directly can be launched and be received by antenna using electromagnetic wave energy, this mode realizes long range and big work(
The transmission of rate energy, but energy transmission limited by direction, can not cut-through thing, and be lost it is larger, to human body and its
Its biology has grievous injury；3rd class is non-radiative coupled resonance mode, and the technology can be passed in the case where there is barrier
Defeated, transmission range is also distant, and transimission power is also larger, and human body is not injured.
The content of the invention
In view of the shortcomings of the prior art, the present invention provide a kind of achievable wireless charging based on magnetic coupling wireless power transmission skill
Art exempts from charging bluetooth earphone.
The technical solution adopted in the present invention is：It is a kind of that charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology,
It is the electric energy transmitting circuit of 0-60cm including headset body and induction range；The bluetooth earphone body includes two individual earphones
With two connectors of individual earphones of connection；Connection two data wires and power line of individual earphones are provided with the connector,
One of them is provided with bluetooth earphone functional circuit for two individual earphones, chargeable lithium cell, electric energy is provided with individual earphones and is received
Circuit and rectifying and pressure-regulating system, the electric energy receiving circuit receive the electric energy of electric energy transmitting circuit, and by rectifying and pressure-regulating system
By electrical energy transportation to chargeable lithium cell, chargeable lithium cell provides operating voltage for bluetooth earphone functional circuit.
Further, the electric energy transmitting circuit includes being followed in series to form the transmitting coil L1 of closed-loop path, resonance electricity
Hold C1, alternating voltage V1 and equiva lent impedance Zl.
Further, the electric energy receiving circuit includes being followed in series to form the receiving coil L2 of closed-loop path, resonance electricity
Hold C2, load impedance ZL and equiva lent impedance Z2.
Further, described rectifying and pressure-regulating system utilizes the pole of Schottky two by rectification and pressure regulation two parts, rectifying part
Pipe composition bridge circuit AC energy is become into direct current, while plus a filter circuit filter higher hamonic wave；Obtained after rectification
Direct current energy enters pressure regulation part, and pressure regulation part is made up of to be adjusted voltage DC/DC circuits and reaches voltage needed for earphone.
Compared with prior art, the present invention has advantages below:The bluetooth earphone is intrinsic by bluetooth earphone first
The magnetic coupling wireless power transmission technology of the electric energy transmitting circuit outside electric energy receiving circuit and bluetooth earphone carries out wireless charging to lithium battery
Electricity, and for the intrinsic part of bluetooth is powered；Protected when bluetooth earphone and electric energy transmitting circuit distance are in the range of 0-60cm
Hold bluetooth earphone continuous firing in the case where not charging, and provide power storage simultaneously in lithium battery, when bluetooth earphone and
When electric energy transmitting circuit is distant, the normal work of bluetooth earphone is ensured by built-in chargeable lithium cell.
Brief description of the drawings
Fig. 1 is Headphone structure schematic diagram of the present invention；
Fig. 2 is schematic block circuit diagram of the invention；
Fig. 3 is resonant mode electric energy transmission plan schematic diagram in the present invention；
Fig. 4 is secondary receiving circuit schematic diagram in the present invention；
Fig. 5 is inactive rectification, filtering, mu balanced circuit figure in the present invention；
Fig. 6 is the drive circuit figure of driving alternating voltage V1 in the present invention；
In figure：Headset body 1, individual earphones 101, connector 102.
Specific embodiment
Technical scheme is described further below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology the invention discloses a kind of,
It is the electric energy transmitting circuit of 0-60cm including headset body 1 and induction range；The bluetooth earphone body 1 includes two earphone lists
Two connectors of individual earphones 102 of body 101 and connection；Two data of individual earphones of connection are provided with the connector 102
Line and power line, two individual earphones 101 one of them be provided with bluetooth earphone functional circuit, individual earphones 101 and be provided with and can fill
Electric lithium battery, electric energy receiving circuit and rectifying and pressure-regulating system, the electric energy receiving circuit receive the electric energy of electric energy transmitting circuit, and
By rectifying and pressure-regulating system by electrical energy transportation to the chargeable lithium cell connected by electric wire, chargeable lithium cell is bluetooth earphone
Functional circuit provides operating voltage.The bluetooth earphone functional circuit can be existing all earphone electricity with Bluetooth function
Road.
Wireless power technology be also referred to as contactless energy transmission or loose coupling electric energy transmission, be broadly divided into electromagnetic radiation formula,
Three kinds of induction and electromagnetic resonance (i.e. magnetic coupling wireless power transmission).Wherein, the general principle of electromagnetic resonance is two
Between individual vibration frequency identical object can efficiently transmission energy, and for different vibration frequencies object almost without shadow
Ring.The technology is exactly by the near-field coupling in magnetic field so that primary coil, secondary coil produce resonance, then transmit energy.Electricity
Magnetic resonance wireless power technology in the case where there is barrier, can reach the transmitting range of meter level.Electric energy in the present invention
Receiving circuit and electric energy transmitting circuit realize the transmission of electric energy using magnetic coupling wireless power transmission technology.
As shown in figure 3, electric energy receiving circuit of the invention uses series resonance, the electric energy receiving circuit including going here and there successively
Connection constitutes receiving coil L2, resonant capacitance C2, the load impedance ZL and equiva lent impedance Z2 of closed-loop path.Electric energy transmitting circuit is also same
Sample uses series resonance, and the induction range of electric energy transmitting circuit is 0-60cm, and the electric energy transmitting circuit includes being followed in series to form
The transmitting coil L1 of closed-loop path, resonant capacitance C1, alternating voltage V1 and equiva lent impedance Zl.I.e. by after inversion and power amplification
Alternating voltage.By the coupling of transmitting coil and receiving coil, resonance electric energy is transferred to receiving coil, and the receiving coil is received
To waveform be sine wave, then through over commutation, filtering after i.e. be provided to load.Wherein, for DC load, load resistance
Anti- ZL uses secondary receiving circuit, and the typical design solution of the circuit is that electric flowing through coil passes through after inactive rectification, then through filtering
Load is supplied to after ripple, voltage stabilizing and voltage-regulation；Secondary receiving circuit schematic diagram is as shown in Figure 4.Wherein, it is actual to be with electric loading
Lithium battery under wireless Bluetooth headsets functional circuit and the built-in charged state of wireless Bluetooth headsets.Wherein, inactive rectification, filter
Ripple, mu balanced circuit are as shown in Figure 5, it is possible to use integrated chip BQ51013B realizes AC-DC translation functions, uses integrated chip
MP1584EN realizes that DC-DC is converted.
The alternating voltage V1 in the electric energy transmitting circuit is via being carried in the LC that is made up of L1, C1 after driving chip
On resonance circuit, as shown in fig. 6, Ql, Q2 represent two enhanced FETs, switching tube is herein used as；Dl, D2 represent two
Diode, act as current stream.It is grounded after Q1, Q2 series connection, grid is connected with driving chip, is used to control field-effect respectively
Pipe break-make.D1, D2 respectively with Q1, Q2 is in parallel.Extraction voltage Vl is carried on LC resonance circuits in the middle of Q1, Q2.Driving chip
Resonance type switching power source controller MC34067P can be used.Direct current is converted to high frequency by the electric energy transmitting circuit by inversion
Alternating current, by the external emitted energy of transmitting coil.The electric energy transmitting circuit can use half bridge inverter circuit.In view of circuit
Electric current is larger, it is necessary to FET can be changed into insulated gate bipolar crystal when increasing transmit power when being operated in series resonance
(IGBT)。
Operation principle:Using when, electric energy transmitting circuit can be installed near bluetooth earphone, when bluetooth earphone and electric energy are launched
Wireless Bluetooth headsets continuous firing in the case where not charging is kept when circuit distance is in the range of 0-60cm, and electricity is provided simultaneously
Can be stored in lithium battery；When bluetooth earphone and distant electric energy transmitting circuit, protected by built-in chargeable lithium cell
Hinder the normal work of wireless Bluetooth headsets.
Claims (4)
- It is 1. a kind of that charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology, it is characterised in that：Including headset body (1) and Induction range is the electric energy transmitting circuit of 0-60cm；The bluetooth earphone body (1) includes two individual earphones (101) and connection Two connectors of individual earphones (102)；Connection two data wires and power supply of individual earphones are provided with the connector (102) Line, two individual earphones (101) one of them be provided with bluetooth earphone functional circuit, individual earphones (101) and be provided with chargeable lithium Battery, electric energy receiving circuit and rectifying and pressure-regulating system, the electric energy receiving circuit receive the electric energy of electric energy transmitting circuit, and pass through By electrical energy transportation to chargeable lithium cell, chargeable lithium cell provides work electricity to rectifying and pressure-regulating system for bluetooth earphone functional circuit Pressure.
- It is 2. according to claim 1 that charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology, it is characterised in that:Institute Stating electric energy transmitting circuit includes being followed in series to form the transmitting coil L1 of closed-loop path, resonant capacitance C1, alternating voltage V1 and waits Effect impedance Z l.
- It is 3. according to claim 1 that charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology, it is characterised in that:Institute Stating electric energy receiving circuit includes being followed in series to form the receiving coil L2 of closed-loop path, resonant capacitance C2, load impedance ZL and waits Effect impedance Z 2.
- It is 4. according to claim 1 that charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology, it is characterised in that:Institute The rectifying and pressure-regulating system stated will be handed over by rectification and pressure regulation two parts, rectifying part using the bridge circuit of Schottky diode composition Stream electric energy become direct current, while plus a filter circuit filter higher hamonic wave；The direct current energy obtained after rectification enters pressure regulation part, Pressure regulation part is made up of to be adjusted voltage DC/DC circuits and reaches voltage needed for earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173505.1A CN106878853A (en) | 2017-03-22 | 2017-03-22 | Charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173505.1A CN106878853A (en) | 2017-03-22 | 2017-03-22 | Charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106878853A true CN106878853A (en) | 2017-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710173505.1A Pending CN106878853A (en) | 2017-03-22 | 2017-03-22 | Charging bluetooth earphone is exempted from based on magnetic coupling wireless power transmission technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107690103A (en) * | 2017-09-29 | 2018-02-13 | 桂林电子科技大学 | A kind of headphone for supporting wireless charging |
| CN107874901A (en) * | 2017-10-26 | 2018-04-06 | 杨铭轲 | Contact lens and intraocular illuminator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333148A (en) * | 2014-10-30 | 2015-02-04 | 华中科技大学 | Wireless charging circuit and control method thereof |
| CN205305078U (en) * | 2016-01-07 | 2016-06-08 | 李文华 | Wireless bluetooth headset that charges and charging seat thereof |
| CN205485998U (en) * | 2016-03-18 | 2016-08-17 | 浙江大学 | Wireless mouse that charges exempts from based on magnetic coupling wireless power transmission technique |
| CN106026419A (en) * | 2016-06-22 | 2016-10-12 | 封先河 | Electromagnetic coupling wireless power transmission apparatus and method |
-
2017
- 2017-03-22 CN CN201710173505.1A patent/CN106878853A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333148A (en) * | 2014-10-30 | 2015-02-04 | 华中科技大学 | Wireless charging circuit and control method thereof |
| CN205305078U (en) * | 2016-01-07 | 2016-06-08 | 李文华 | Wireless bluetooth headset that charges and charging seat thereof |
| CN205485998U (en) * | 2016-03-18 | 2016-08-17 | 浙江大学 | Wireless mouse that charges exempts from based on magnetic coupling wireless power transmission technique |
| CN106026419A (en) * | 2016-06-22 | 2016-10-12 | 封先河 | Electromagnetic coupling wireless power transmission apparatus and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107690103A (en) * | 2017-09-29 | 2018-02-13 | 桂林电子科技大学 | A kind of headphone for supporting wireless charging |
| CN107874901A (en) * | 2017-10-26 | 2018-04-06 | 杨铭轲 | Contact lens and intraocular illuminator |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |
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| RJ01 | Rejection of invention patent application after publication |