CN104242714B - A kind of wireless power transmission device high frequency electric source equipment of Class D structures - Google Patents
A kind of wireless power transmission device high frequency electric source equipment of Class D structures Download PDFInfo
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- CN104242714B CN104242714B CN201410326100.3A CN201410326100A CN104242714B CN 104242714 B CN104242714 B CN 104242714B CN 201410326100 A CN201410326100 A CN 201410326100A CN 104242714 B CN104242714 B CN 104242714B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 230000010355 oscillation Effects 0.000 claims abstract description 17
- 230000003321 amplification Effects 0.000 claims abstract description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 6
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses a kind of wireless power transmission device high frequency electric source equipment of Class D structures, including power protecting circuit, high frequency oscillation unit, high-speed driving unit, high frequency power amplifying unit.Wherein, power protecting circuit is the circuit to high frequency power source system power supply and offer abnormal protection, and out-put supply gives other 3 units to power；Direct current is produced a high-frequency signal by vibration using higher-order of oscillation principle and is output to high-speed driving circuit by high frequency oscillation unit；High-speed driving circuit will generate differential signal after high-frequency signal shaping, then respectively by high-end, the low side driving output DH and DL signals that are exported using independent source electrode with drain electrode, for driving high frequency power amplifying unit；High frequency power amplifying unit is by a pair of enhanced GaN power fets, it is operated on off state in the presence of drive signal, is exported after input signal is carried out into power amplification, as the high frequency electric source in wireless power transmission systems.
Description
Technical field
The present invention relates to wireless power transmission technical field, more particularly to a kind of high frequency electric source equipment.
Background technology
This cutting edge technology of wireless power transmission is considered as that the development of electric power science and technology from now on is sent to, and will bring human lives and Sheng
The major transformation of production mode, there are huge market and development prospect.Such as household electrical appliance, electric automobile, industrial robot, medical treatment
Apparatus, Aero-Space, oil field mine, underwater operation, wireless sensor network and RFID etc..
At present, wireless power transmission technology most with prospects is the technology based on magnetic coupling resonance mode, due to now should
The design work frequency of technology is more between 1kHz to 30MHz, and the high frequency power source system in the technology is design key component
One of.Prior art is efficiency the shortcomings which as high frequency electric source more using the oscillator of Colpitts capacitance three-point types
It is relatively low, so as to have impact on the efficiency of whole wireless power transmission systems.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of small size high frequency electric source of novel efficient
Solution, the power output of hectowatt grade can be effectively realized, power output is adjustable.
In order to solve the above-mentioned technical problem the present invention uses following technical scheme：
The wireless power transmission device high frequency electric source equipment of a kind of Class D structures, by power protecting circuit, higher-order of oscillation list
Member, high-speed driving unit, high frequency power amplifying unit composition；Described power protecting circuit provides operating voltage for each unit,
And protection is provided in input overvoltage, high frequency power amplifying unit excessively stream and overheat, high frequency oscillation unit produces a high frequency letter
High-speed driving unit number is sent to, high-speed driving unit will generate differential signal after high-frequency signal shaping, then respectively by using only
Vertical source electrode and high-end, the low side driving output DH and DL signals of drain electrode output, for driving high frequency power amplifying unit；High frequency work(
Rate amplifying unit exports after input signal is carried out into power amplification, as the high frequency electric source in wireless power transmission systems.
Further, a kind of wireless power transmission device of Class D structures of the invention is with high frequency electric source equipment, the height
The half-bridge class D power amplifier that frequency power amplification unit is made up of enhanced GaN power fets.
Further, a kind of wireless power transmission device of Class D structures of the invention is with high frequency electric source equipment, the height
Fast driver element is made up of a shaping differential output circuit and a high-end drive circuit, a low-side driver circuitry.
Further, a kind of wireless power transmission device of Class D structures of the invention is with high frequency electric source equipment, the height
Fast driver element high-side driver and low side driving are exported using independent source electrode and drain electrode.
Further, a kind of wireless power transmission device of Class D structures of the invention is with high frequency electric source equipment, the height
Frequency oscillating unit uses the series oscillator that quartz crystal forms, and adjusts accounting for for frequency of oscillation by a duty cycle adjustment device
Empty ratio.
Further, a kind of wireless power transmission device of Class D structures of the invention is with high frequency electric source equipment, the height
Frequency power amplification unit includes the half-bridge class D power amplifier of 1 pair of enhanced GaN power fets composition, then by hollow by one
High frequency electric source is exported after the output impedance match circuit of inductance and two electric capacity compositions.
The present invention compared with prior art, has following technique effect using above technical scheme：
In whole wireless power transmission systems, high frequency electric source is straight as one of its critical component, the height of high frequency electric source efficiency
Connecing influences the efficiency of whole wireless power transmission systems, and the high-speed driving unit in high frequency electric source scheme of the present invention has used independent source electrode
Exported with drain electrode, the half-bridge class D power amplifier that high frequency power amplifying unit is made up of 1 pair of enhanced GaN power fet, wherein
The enhanced GaN power tubes used, compared with traditional use Mos power tubes, there is lower switching loss and conduction loss,
The conversion efficiency of high frequency electric source is can greatly improve, while it is few to generate heat, small volume.
Because enhanced GaN power tubes can bear the switching rate that is exceedingly fast, using the half-bridge D of enhanced GaN power tubes
Power-like amplifier, the operating frequency range requirement of suitable wireless power transmission can be reached, that is, reach 1kHz to 30MHz work frequency
Rate scope.
Brief description of the drawings
Fig. 1 is the general frame of present device.
Fig. 2 is the electrical block diagram of power protecting circuit in the present invention.
Fig. 3 is the electrical block diagram of medium-high frequency oscillating unit of the present invention.
Fig. 4 is the electrical block diagram of high speed driver element of the present invention.
Fig. 5 is the electrical block diagram of medium-high frequency power amplification unit of the present invention.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
Method provided by the present invention is to be produced a high-frequency signal as input using direct current and be output to high-speed driving
Unit, then the D-type power amplifier that is made up of enhanced GaN power fets of driving is gone by high-speed driving unit, through output impedance
The output of high-frequency electrical is realized after matching somebody with somebody.Change the dutycycle of high-frequency signal, realize the regulation of higher-order of oscillation output power of power supply.
The wireless power transmission device high frequency electric source equipment of a kind of Class D structures, by power protecting circuit 1, the higher-order of oscillation
Unit 2, high-speed driving unit 3, high frequency power amplifying unit 4 form, shown in reference picture 1；Described power protecting circuit is each
Unit provides operating voltage, and provides protection, higher-order of oscillation list in input overvoltage, high frequency power amplifying unit excessively stream and overheat
Member produces a high-frequency signal and is sent to high-speed driving unit, and high-speed driving unit will generate differential signal after high-frequency signal shaping,
Again respectively by high-end, the low side driving output DH and DL signals that are exported using independent source electrode with drain electrode, for driving high frequency work(
Rate amplifying unit；High frequency power amplifying unit exports after input signal is carried out into power amplification, as in wireless power transmission systems
High frequency electric source.
Power protecting circuit 1 powers direct current after voltage stabilizing to high frequency oscillation unit 2, high-speed driving unit 3.Simultaneously
The electric current and temperature information control fed back further according to DC input voitage and high frequency power amplifying unit 4 is output to high frequency power and put
The power supply of big unit 4, the control function can be realized by control chip.
Shown in reference picture 2, described power protecting circuit 1 is by mu balanced circuit 1-4, temperature current detection unit 1-3, electricity
Detection unit 1-2, power control unit 1-1 is pressed to form, wherein, power control unit 1-1 is realized by control chip, is serially connected with
(wherein power supply 1 is powered to high frequency oscillation unit 2, high-speed driving unit 3, and power supply 2 supplies to high frequency power amplifying unit 4 in power supply
Electricity), to control the break-make of the power supply of high frequency power amplifying unit 4, voltage detection unit 1-2 is for detecting input dc power
It is no in normal operating voltage range, temperature current detection unit 1-3 is used for the working condition for detecting high frequency power amplifying unit 4
Whether normal, mu balanced circuit 1-4 is then high frequency oscillation unit 2, the power supply needed for the offer normal work of high-speed driving unit 3.
Shown in reference picture 3, high frequency oscillation unit 2 is by series crystal oscillators 2-1 and duty ratio adjusting circuit 2-2 groups
Into series crystal oscillators 2-1 is used to produce required high-frequency signal, and duty ratio adjusting circuit 2-2 then adjusts high-frequency signal
Dutycycle is so as to changing the power output of high frequency power amplifying unit 4.
Shown in reference picture 4, high-speed driving unit 3 is by buffer 3-1 and 2 MOSFET high-side drivers 3-2 and low side drive
Dynamic 3-3 compositions, buffer 3-1 are used to carry out shaping to the high-frequency signal of input, amplification, change into differential signal, be respectively coupled to height
End driving 3-2 and low side driving 3-3, high-side driver 3-2 and low side driving 3-3 are converged again with independent source electrode and drain electrode output respectively
Into drive signal.
Shown in reference picture 5, high frequency power amplifying unit 4 is made up of a pair of above-mentioned enhanced GaN power fets, that is, is strengthened
Type GaN power fets 4-1 and enhanced GaN power fets 4-2 (can be multipair in parallel to strengthen driving current), in drive signal
In the presence of it is operated on off state, the power consumption on such power tube can be reduced to it is minimum, so as to which high frequency greatly reduce
The caloric value of power supply, improve the operating efficiency of high frequency electric source.After impedance matching circuit 4-3 matches to output impedance
High frequency electric source is exported again.Feedback temperature, current signal are detected to power protecting circuit 1 again simultaneously.
Above to a kind of high-frequency drive power supply of the wireless power transmission device of Class D structures provided by the present invention, carry out
Detailed introduction, specific embodiment used herein are set forth to the principle and embodiment of the present invention, and the above is said
It is bright to apply to help the method and its core concept for understanding the present invention, simultaneously for one of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in specific embodiments and applications, in summary, this specification content is not
It should be understood that limitation of the present invention.
Claims (2)
- A kind of 1. wireless power transmission device high frequency electric source equipment of Class D structures, by power protecting circuit, higher-order of oscillation list Member, high-speed driving unit, high frequency power amplifying unit composition；Described power protecting circuit provides operating voltage for each unit, And protection is provided in input overvoltage, high frequency power amplifying unit excessively stream and overheat, high frequency oscillation unit produces a high frequency letter High-speed driving unit number is sent to, high-speed driving unit will generate differential signal after high-frequency signal shaping, then respectively by using only Vertical source electrode and high-end, the low side driving output DH and DL signals of drain electrode output, for driving high frequency power amplifying unit；High frequency work( Rate amplifying unit exports after input signal is carried out into power amplification, and as the high frequency electric source in wireless power transmission systems, its feature exists In：The high frequency power amplifying unit includes the half-bridge class D power amplifier of 1 pair of enhanced GaN power fets composition, then passes through High frequency electric source is exported after one output impedance match circuit；The high-speed driving unit is by a shaping differential output circuit and a high-side driver, a low-side driver circuitry group Into；The high-speed driving unit high-side driver and low side driving are using independent source electrode and drain electrode output driving；The high frequency oscillation unit uses the series oscillator that quartz crystal forms, and is adjusted by a duty ratio adjusting circuit The dutycycle of frequency of oscillation；The working frequency of the high frequency power amplifying unit can meet the applicable operating frequency range of wireless power transmission, i.e. 1kHz- 30MHz。
- 2. a kind of wireless power transmission device high frequency electric source equipment of Class D structures as claimed in claim 1, its feature exist In：The power protecting circuit is provided with overvoltage, current limliting and temperature protection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410326100.3A CN104242714B (en) | 2014-07-10 | 2014-07-10 | A kind of wireless power transmission device high frequency electric source equipment of Class D structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410326100.3A CN104242714B (en) | 2014-07-10 | 2014-07-10 | A kind of wireless power transmission device high frequency electric source equipment of Class D structures |
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| Publication Number | Publication Date |
|---|---|
| CN104242714A CN104242714A (en) | 2014-12-24 |
| CN104242714B true CN104242714B (en) | 2018-01-02 |
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| CN201410326100.3A Expired - Fee Related CN104242714B (en) | 2014-07-10 | 2014-07-10 | A kind of wireless power transmission device high frequency electric source equipment of Class D structures |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105702245B (en) * | 2016-03-18 | 2023-03-31 | 杭州百隆电子有限公司 | Built-in oscillation buzzer driving chip set and active buzzer thereof |
| EP4075404A4 (en) * | 2020-01-07 | 2022-12-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control circuit and control method for switch transistor |
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|---|---|---|---|---|
| CN101336031A (en) * | 2008-06-02 | 2008-12-31 | 哈尔滨工业大学 | An electronic ballast for a metal halide lamp of a projector |
| CN102545354A (en) * | 2012-01-13 | 2012-07-04 | 东南大学 | Wireless charging device of small-sized electronic equipment |
| CN102845380A (en) * | 2011-06-28 | 2013-01-02 | 罗英华 | LED (light-emitting diode) underwater fish gathering lamp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420223B (en) * | 2007-10-23 | 2012-05-23 | 三星电子株式会社 | Differential transmitter |
| CN101674071B (en) * | 2008-09-11 | 2011-08-24 | 上海华虹Nec电子有限公司 | Physical layer interface circuit |
| CN102075833B (en) * | 2011-01-13 | 2012-12-26 | 深圳市泰金田科技有限公司 | Method, circuit and device for realizing 2.1 sound track power amplification by using double-channel circuit |
| CN103246305A (en) * | 2012-03-21 | 2013-08-14 | 上海拜安传感技术有限公司 | Circuit structure for continuously generating positive and negative voltage and current on basis of feedback control |
| CN102882821B (en) * | 2012-09-13 | 2015-02-18 | 清华大学 | On-off keying (OOK) radio frequency receiver |
| CN204068750U (en) * | 2014-07-10 | 2014-12-31 | 丁文萍 | A kind of wireless power transmission device high frequency electric source equipment of Class D structure |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336031A (en) * | 2008-06-02 | 2008-12-31 | 哈尔滨工业大学 | An electronic ballast for a metal halide lamp of a projector |
| CN102845380A (en) * | 2011-06-28 | 2013-01-02 | 罗英华 | LED (light-emitting diode) underwater fish gathering lamp |
| CN102545354A (en) * | 2012-01-13 | 2012-07-04 | 东南大学 | Wireless charging device of small-sized electronic equipment |
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