CN203039853U - Charging device and wireless earphone - Google Patents
Charging device and wireless earphone Download PDFInfo
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- CN203039853U CN203039853U CN 201220647145 CN201220647145U CN203039853U CN 203039853 U CN203039853 U CN 203039853U CN 201220647145 CN201220647145 CN 201220647145 CN 201220647145 U CN201220647145 U CN 201220647145U CN 203039853 U CN203039853 U CN 203039853U
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Abstract
The utility model relates to a charging device and a wireless earphone. The charging device comprises a housing and a substrate is arranged in the housing; and an oscillating unit, a driving unit and an emission unit are arranged on the substrate. The oscillating unit generates an oscillating signal and outputs the signal to the driving unit; the driving unit amplified the oscillating signal and outputs the signal to the emission unit; and the emission unit emits an electromagnetic wave signal for charging. In addition, the wireless earphone includes a main body; a substrate is arranged in the main body; and a charging circuit for charging an electricity storage unit is arranged on the substrate. And the charging circuit has a receiving unit for receiving the electromagnetic wave signal emitted by the charging device, a rectification unit for receiving the signal outputted by the receiving unit, a filtering unit for carrying out filtering on the signal outputted by the rectification unit, and a voltage stabilization unit for carrying out voltage stabilization on the signal outputted by the filtering unit, wherein the voltage stabilization unit outputs a signal to the electricity storage unit. According to the charging device and wireless earphone provided by the utility model, much inconvenience caused by the traditional wired charging can be effectively avoided.
Description
Technical field
The utility model relates to a kind of charging device and wireless headset, in particular, relates to and a kind of wireless headset is carried out the charging device of wireless charging and the wireless headset that is charged by this charging device.
Background technology
Wireless headset is a kind of earphone that utilizes short-range radio technology (as " bluetooth " technology) received audio signal, it can simplify communicating by letter between mobile communication terminal devices such as computer, mobile phone and the earphone effectively, makes that the communication between many equipment becomes simple, convenient, fast.And use the bluetooth earphone of this " bluetooth " technology exactly Bluetooth technology to be applied on the hands-free headsets, and allow the user can exempt impeding of electric wire, comfortable ground is easily conversation in every way.
Bluetooth earphone is as wireless product, and need there be the battery that the power supply supply is provided its inside, and general battery all can electric power storage.When the running down of battery of bluetooth earphone inside, traditional charging modes generally is a charging wire need be connected on the bluetooth earphone, carries out battery charge.
Yet there is following problem in this traditional charging modes:
One, because after the long-term use of wireless headset and charging wire, the interface of wireless headset and the plug of charging wire can cause loose contact because of reasons such as metal fatigue, oxidation or corrosion, so that make troubles to charging;
Two, since charging wire use as the accessory of wireless headset, but sometimes owing to artificial or other reasons such as inevitable, the situation that charging wire is lost or damaged can appear, so also can bring difficulty to charging;
Three, because the charging wire plug connects charging by interface on the bluetooth earphone main body, when not using interface, general meeting is on the access flap, but also can have influence on the appearance design of whole earphone and attractive in appearance;
Four, because the interface metal exposes, be unfavorable for finishing electrostatic test, influence the security and stability of earphone.
Summary of the invention
The utility model main purpose provides a kind of can launch the charging device that electromagnetic wave carries out wireless charging to wireless headset.
Another purpose of the present utility model provides the bluetooth earphone that a kind of electromagnetic wave that can receive the charging device emission carries out wireless charging.
In order to realize above-mentioned main purpose, the utility model provides a kind of charging device, comprise housing, be provided with substrate in the housing, wherein, substrate is provided with oscillating unit, driver element and transmitter unit, and oscillating unit produces oscillator signal and outputs to driver element, driver element outputs to transmitter unit with the oscillator signal amplification, and transmitter unit sends the electromagnetic wave signal for charging.
By such scheme as seen, the oscillator signal that oscillating unit will evoke certainly is input to driver element,
After over-drive unit was amplified oscillator signal, the oscillator signal after will amplifying again was transported to transmitter unit.Such charging circuit is simple in structure, stable performance, efficient advantages of higher.
A preferred scheme is the RC circuit that oscillating unit has the inverter chip and is connected with the pin of inverter chip.
This shows, the mode of oscillation that the concussion unit adopts is the RC vibration, the RC vibration is applicable to the oscillating circuit that frequency is lower, amplitude is bigger, component size than the LC oscillating circuit is big, heavy, installation inconvenience, and the cost height, so RC vibration has characteristics such as installation simple in structure, light, easy, cost be low.
A preferred scheme is that driver element has the field effect tube chip that receives the inverter chip signal output.
This shows, than adopting traditional devices such as triode, adopts integrated field effect tube chip have the life-span long, reliability is high, performance good, cost is low, be convenient to advantage such as installation welding.
In order to realize another above-mentioned purpose, the utility model provides a kind of wireless headset, comprise main body, be provided with the loudspeaker of wireless audio signal receiving element and output audio in the main body, also be provided with substrate in the main body, substrate is provided with to the charge storage unit of loudspeaker power supply and the charging circuit that charges to charge storage unit, wherein, charging circuit has the receiving element that receives the electromagnetic wave signal that charging device sends, reception is from the rectification unit of the signal of receiving element output, the filter unit that the signal that rectification unit is exported carries out filtering, and the voltage regulation unit that the signal of filter unit output is carried out voltage stabilizing, voltage regulation unit is to the charge storage unit output signal.
By such scheme as seen, after receiving element is come the electromagnetic wave coupling of transmitter unit emission, after over commutation, filtering, voltage stabilizing, the output galvanic current is to the charge storage unit of earphone, foregoing circuit effectively changes into alternating current to electromagnetic wave, then again with after AC rectification, filtering, the voltage stabilizing, the direct current of output efficient stable uses for charge storage unit.
A preferred scheme is, rectification unit comprises first diode and second diode, and anode and the receiving element of first diode join, and the negative electrode of first diode and second diode cathode join, the second diode anode ground connection.
This shows that rectification unit is the half-bridge rectification circuit, than full bridge rectifier, drive circuit is more simple, and the anti-unbalance ability is strong.
Description of drawings
Fig. 1 is the charging circuit of the utility model charging device embodiment and wireless headset embodiment, the structured flowchart of charge storage unit.
Fig. 2 is the electrical schematic diagram of the utility model charging device embodiment.
Fig. 3 is the electrical schematic diagram of charging circuit among the utility model wireless headset embodiment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
The charging circuit of charging device of the present utility model and wireless headset, the structured flowchart of charge storage unit as shown in Figure 1, charging device 10 comprises oscillating unit 11, driver element 12, transmitter unit 13, oscillating unit 11 produces oscillator signal and outputs to driver element 12, driver element outputs to transmitter unit 13 with the oscillator signal amplification, transmitter unit 13 sends the electromagnetic wave signal for charging, the charging circuit 19 of wireless headset comprises receiving element 14, rectification unit 15, filter unit 16 and voltage regulation unit 17, and wireless headset also is provided with energy-storage units 18, receiving element 14 receives the electromagnetic wave signal that transmitter unit 13 sends, receiving element 14 outputs to rectification unit 15 with the electromagnetic wave signal that receives again, rectification unit 15 output signals are carried out filtering to filter unit 16, the signal of 17 pairs of filter units of voltage regulation unit, 16 outputs carries out voltage stabilizing, and voltage regulation unit 17 is to described charge storage unit 18 output signals.
Part is described in detail separately below.
Charging device embodiment:
The charging device of present embodiment is the device that wireless headset is carried out wireless charging, and its principle is to utilize electromagnetic induction principle, and the emission electromagnetic wave charges to wireless headset.Charging device comprises a housing, be provided with substrate in the housing, substrate is provided with oscillating unit 11, driver element 12 and transmitter unit 13, wherein, oscillating unit 11 output signals are to driver element 12, driver element 12 amplifies the transmitter unit 13 that outputs to signal, and the circuit on the substrate as shown in Figure 2.
Oscillating unit is made up of inverter chip U1, resistance R 1, resistance R 2 and capacitor C 1, inverter chip U1 pin one links to each other with an end of resistance R 1, the other end of resistance R 1 links to each other with an end of resistance R 2 and an end of capacitor C 1, the other end of resistance R 2 links to each other with pin 6 with inverter chip U1 pin 3, and the other end of capacitor C 1 links to each other with inverter U1 chip pin 4.
By the oscillating circuit that inverter chip U1 and RC form, produce the oscillator signal of fixed frequency, the frequency of its vibration is:
, utilize carrier frequency to carry out build-out resistor electric capacity for 60KHZ.
Driver element 12 is field effect tube chip U2, and it act as and the oscillator signal from inverter chip U1 pin 4 is input to field effect tube chip U2 pin two carries out high frequency and amplify, and field effect tube chip U2 pin 7 joins with pin 8.
Transmitter unit 13 has lc circuit, be made up of capacitor C 2, C3 and inductance L 2, its connected mode is capacitor C 2, C3 and inductance L 2 parallel connections, and an end of capacitor C 2 connects power supply VCC, the other end is connected to the pin 7 of field effect tube chip U2, has formed antiresonant circuit like this.In order to make receiving element can better receive signal, make the amplitude maximum, need carry out capacitance-resistance cooperation, can utilize formula
Calculate only capacitance and resistance value.Transmitter unit 13 sends for the electromagnetic wave signal that charges to wireless headset.
Wireless headset embodiment:
The wireless headset of present embodiment can receive the electromagnetic wave signal that comes self charger and utilize this electromagnetic wave signal to charge, it comprises the wireless headset main body, be provided with substrate in the described main body, the charging circuit that described substrate is provided with charge storage unit 18 and is used for charge storage unit 18 is charged, and the loudspeaker that are provided with the audio signal receiving element and are connected with the audio signal receiving element, loudspeaker are used for output audio signal.
Receiving element 14 is inductive circuit, and it has inductance L 3, utilizes electromagnetic induction principle, and the electromagnetic wave of coupling transmitter unit 13 emissions produces alternating current at inductance L 3 coils.
Rectification unit 15 comprises diode D1 and diode D2, and the inductance L 3 of the anode of diode D1 and receiving element 14 is joined, and the negative electrode of diode D1 and diode D2 negative electrode join, diode D2 plus earth.The rectification unit of being made up of diode D1, D2 15 has alternating current is become approximate galvanic effect, because when the alternating current of inductance L 2 during at positive half wave, because the unidirectional conduction of diode, electric current is through diode D1 circulation, when alternating current during at negative half-wave, electric current can be converted to lower alternating voltage a higher direct voltage by rectification unit like this through diode D2 circulation.
Filter unit 16 is a capacitor C 4, the negative electrode of capacitor C 4 one terminating diode D1, other end ground connection, capacitor C 4 can be the ripple elimination that also is not very smooth approximate direct current behind over commutation like this, reach the effect of flat peak load, the electric current after will handling then is input to voltage regulation unit 17.
Voltage regulation unit 17 comprises voltage regulator chip U3, resistance R 3, R4, inductance L 1, polar capacitor C5, diode D3, voltage regulator chip U3 pin 5 joins with an end of resistance R 3 and an end of resistance R 4, the other end ground connection of resistance R 3, the end of the other end of resistance R 4 and polar capacitor C5, an end of inductance L 1 join, the other end ground connection of polar capacitor C5, the negative electrode of the other end of inductance L 1 and voltage regulator chip U3 pin 3, pin 7 and diode D3 joins, the plus earth of diode D3.
Voltage regulator chip U3 pin two unit 16 electric current after handling that accepts filter, voltage regulator chip U3 pin 5 receives reference voltage, reference voltage is determined by the resistance value of resistance R 3, R4, voltage regulator chip U3 pin two is output port, the effect of inductance L 1 and polar capacitor C5 is to play filter current ripple and pressure stabilization function at output port, diode D3 works to draw high current potential, voltage stabilizing, makes output port export stable electric current.
The stabling current that charge storage unit 18 receives after voltage regulation unit 17 is handled charges, for the daily use of wireless headset provides power supply.
From above-mentioned scheme as seen, the wireless headset that the electromagnetic wave that utilizes charging device to launch charges, charging wire plug or wireless headset interface have been solved effectively owing to long-term the use causes metal fatigue, oxidation or corrosion to cause problems such as charging inconvenience, by adopting the mode of wireless charging, effectively avoid charging inlet to influence the problem of overall appearance, improved the wireless headset security and stability simultaneously.
It is emphasized that at last the utility model is not limited to above-mentioned execution mode, also should be included in the protection range of the utility model claim as the change of reference voltage input mode, the variations such as change of chip type.
Claims (9)
1. charging device comprises:
Housing is provided with substrate in the described housing;
It is characterized in that:
Described substrate is provided with oscillating unit, driver element and transmitter unit, described oscillating unit produces oscillator signal and outputs to described driver element, described driver element outputs to described transmitter unit with described oscillator signal amplification, and described transmitter unit sends the electromagnetic wave signal for charging.
2. charging device according to claim 1 is characterized in that:
The RC circuit that described oscillating unit has the inverter chip and is connected with the pin of described inverter chip.
3. charging device according to claim 2 is characterized in that:
Described driver element has the field effect tube chip that receives described inverter chip signal output.
4. according to each described charging device of claim 1 to 3, it is characterized in that:
Described transmitter unit has lc circuit.
5. wireless headset comprises
Main body is provided with the loudspeaker of wireless audio signal receiving element and output audio in the described main body, also be provided with substrate in the described main body, and described substrate is provided with to the charge storage unit of described loudspeaker power supply and to the charging circuit of described charge storage unit charging;
It is characterized in that:
Described charging circuit has
The receiving element of the electromagnetic wave signal that the reception charging device sends;
Receive the rectification unit of the signal of described receiving element output;
The filter unit that the signal that described rectification unit is exported carries out filtering; And
The voltage regulation unit that the signal that described filter unit is exported carries out voltage stabilizing, described voltage regulation unit is to described charge storage unit output signal.
6. wireless headset according to claim 5 is characterized in that:
Described receiving element includes inductive circuit.
7. according to claim 5 or 6 described wireless headsets, it is characterized in that:
Described rectification unit comprises first diode and second diode, and the anode of described first diode and described receiving element join, and the negative electrode of described first diode and described second diode cathode join, the described second diode anode ground connection.
8. according to claim 5 or 6 described wireless headsets, it is characterized in that:
Described rectification unit is half-bridge rectification circuit or full bridge rectifier.
9. according to claim 5 or 6 described wireless headsets, it is characterized in that:
Described voltage regulation unit comprises the voltage regulator chip that is electrically connected with described charge storage unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647145 CN203039853U (en) | 2012-11-28 | 2012-11-28 | Charging device and wireless earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647145 CN203039853U (en) | 2012-11-28 | 2012-11-28 | Charging device and wireless earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039853U true CN203039853U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220647145 Expired - Fee Related CN203039853U (en) | 2012-11-28 | 2012-11-28 | Charging device and wireless earphone |
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| CN (1) | CN203039853U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110149010A (en) * | 2019-02-28 | 2019-08-20 | 江苏理工学院 | A kind of fast wireless charging system |
| CN110336387A (en) * | 2019-05-24 | 2019-10-15 | 深圳华大北斗科技有限公司 | Wireless headset charging reception system and wireless charging send system |
| WO2021253737A1 (en) * | 2020-06-19 | 2021-12-23 | 惠州市西西艾实业有限公司 | Wireless charging earphone and wireless charging earphone system |
-
2012
- 2012-11-28 CN CN 201220647145 patent/CN203039853U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110149010A (en) * | 2019-02-28 | 2019-08-20 | 江苏理工学院 | A kind of fast wireless charging system |
| CN110336387A (en) * | 2019-05-24 | 2019-10-15 | 深圳华大北斗科技有限公司 | Wireless headset charging reception system and wireless charging send system |
| WO2021253737A1 (en) * | 2020-06-19 | 2021-12-23 | 惠州市西西艾实业有限公司 | Wireless charging earphone and wireless charging earphone system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20181128 |