CN104242714A - High-frequency power supply equipment for wireless power transmission device of Class D structure - Google Patents
High-frequency power supply equipment for wireless power transmission device of Class D structure Download PDFInfo
- Publication number
- CN104242714A CN104242714A CN201410326100.3A CN201410326100A CN104242714A CN 104242714 A CN104242714 A CN 104242714A CN 201410326100 A CN201410326100 A CN 201410326100A CN 104242714 A CN104242714 A CN 104242714A
- Authority
- CN
- China
- Prior art keywords
- high frequency
- unit
- power transmission
- class
- wireless power
- 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.)
- Granted
Links
Classifications
-
- 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
Abstract
The invention discloses high-frequency power supply equipment for a wireless power transmission device of a Class D structure. The high-frequency power supply equipment comprises a power supply protection circuit, a high-frequency oscillation unit, a high-speed drive unit and a high-frequency power amplification unit, wherein the power supply protection circuit is used for providing electricity and fault protection for a high-frequency power supply system and outputting power supplies to the other three units; the high-frequency oscillation unit generates a high-frequency signal by oscillating direct currents according to a high-frequency oscillation principle and outputs the high-frequency signal to the high-speed drive unit; a differential signal is generated after the high-frequency signal is shaped through the high-speed drive unit, DH and DL signals are output through a high-end driver and a low-end driver, independent source and sink output is adopted for the high-end driver and the low-end driver, and the high-speed drive unit is used for driving the high-frequency power amplification unit; the high-frequency power amplification unit is formed by a pair of enhanced GaN power FETs, under the action of drive signals, the high-frequency power amplification unit works in the on or off state, carries out power amplification on input signals and then outputs the input signals to serve as a high-frequency power supply of a wireless power transmission system.
Description
Technical field
The present invention relates to wireless power transmission technical field, particularly relate to a kind of high frequency electric source equipment.
Background technology
The development that this cutting edge technology of wireless power transmission is considered to electric power science and technology is from now on sent to, and will bring the major transformation of human lives and the mode of production, has huge market and development prospect.As aspects such as household electrical appliance, electric automobile, industrial robot, medicine equipment, Aero-Space, oil field mine, underwater operation, wireless sensor network and RFID.
At present, wireless power transmission technology most with prospects is the technology based on magnetic coupling resonance mode, and because the design work frequency of this technology present is many between 1kHz to 30MHz, and the high frequency power source system in this technology is one of design key assembly.The oscillator of prior art many employings Colpitts capacitance three-point type is as high frequency electric source, and the shortcoming of which is that efficiency is lower, thus have impact on the efficiency of whole wireless power transmission systems.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of small size high frequency electric source solution of novel efficient, effectively can realize the power stage of hectowatt grade, power output is adjustable.
The present invention is in order to solve the problems of the technologies described above by the following technical solutions:
A wireless power transmission device high frequency electric source equipment for Class D structure, is made up of power protecting circuit, high frequency oscillation unit, high-speed driving unit, high frequency power amplifying unit; Described power protecting circuit provides operating voltage for each unit, and in input overvoltage, high frequency power amplifying unit overcurrent and overheated time protection is provided, high frequency oscillation unit produces a high-frequency signal and is sent to high-speed driving unit, high-speed driving unit generates differential signal by after high-frequency signal shaping, again respectively through high-end, the low side driver output DH adopting independent source electrode and drain electrode to export and DL signal, for driving high frequency power amplifying unit; High frequency power amplifying unit exports after input signal is carried out power amplification, as the high frequency electric source in wireless power transmission systems.
Further, in the wireless power transmission device high frequency electric source equipment of a kind of Class D structure of the present invention, the half-bridge D-type power amplifier that described high frequency power amplifying unit is made up of enhancement mode GaN power fet.
Further, in the wireless power transmission device high frequency electric source equipment of a kind of Class D structure of the present invention, described high-speed driving unit is made up of a shaping differential output circuit and high-end drive circuit, a low-side driver circuitry.
Further, in the wireless power transmission device high frequency electric source equipment of a kind of Class D structure of the present invention, described high-speed driving unit high-side driver and low side drive and all adopt independent source electrode to export with drain electrode.
Further, in the wireless power transmission device high frequency electric source equipment of a kind of Class D structure of the present invention, described high frequency oscillation unit uses the series oscillator of quartz crystal composition, and regulates the duty ratio of frequency of oscillation by a duty cycle adjustment device.
Further, in the wireless power transmission device high frequency electric source equipment of a kind of Class D structure of the present invention, described high frequency power amplifying unit comprises the half-bridge D-type power amplifier of 1 pair of enhancement mode GaN power fet composition, then exports high frequency electric source by after the output impedance match circuit that is made up of an air core inductor and two electric capacity.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
In whole wireless power transmission systems, high frequency electric source is as one of its critical component, the height of high frequency electric source efficiency directly affects the efficiency of whole wireless power transmission systems, high-speed driving unit in high frequency electric source scheme of the present invention employs independent source electrode and exports with drain electrode, the half-bridge D-type power amplifier that high frequency power amplifying unit is made up of 1 pair of enhancement mode GaN power fet, the enhancement mode GaN power tube wherein adopted, compared with traditional employing Mos power tube, there is lower switching loss and conduction loss, can greatly improve the conversion efficiency of high frequency electric source, heating is few simultaneously, volume is little.
Because enhancement mode GaN power tube can bear the switching rate be exceedingly fast, adopt the half-bridge D-type power amplifier of enhancement mode GaN power tube, the operating frequency range requirement of applicable wireless power transmission can be reached, namely reach the operating frequency range of 1kHz to 30MHz.
Accompanying drawing explanation
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
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
Method provided by the present invention adopts direct current as input, produce a high-frequency signal and output to high-speed driving unit, gone to drive the D-type power amplifier be made up of enhancement mode GaN power fet by high-speed driving unit again, after output impedance coupling, realize the output of high-frequency electrical.Change the duty ratio of high-frequency signal, realize the adjustment of higher-order of oscillation output power of power supply.
A wireless power transmission device high frequency electric source equipment for Class D structure, is made up of power protecting circuit 1, high frequency oscillation unit 2, high-speed driving unit 3, high frequency power amplifying unit 4, with reference to shown in Fig. 1; Described power protecting circuit provides operating voltage for each unit, and in input overvoltage, high frequency power amplifying unit overcurrent and overheated time protection is provided, high frequency oscillation unit produces a high-frequency signal and is sent to high-speed driving unit, high-speed driving unit generates differential signal by after high-frequency signal shaping, again respectively through high-end, the low side driver output DH adopting independent source electrode and drain electrode to export and DL signal, for driving high frequency power amplifying unit; High frequency power amplifying unit exports after input signal is carried out power amplification, as the high frequency electric source in wireless power transmission systems.
Direct current is given high frequency oscillation unit 2 by power protecting circuit 1 after voltage stabilizing, high-speed driving unit 3 is powered.The electric current simultaneously fed back according to DC input voitage and high frequency power amplifying unit 4 again and temperature information control to output to the power supply of high frequency power amplifying unit 4, and this controlling functions can be realized by control chip.
With reference to shown in Fig. 2, described power protecting circuit 1 is by voltage stabilizing circuit 1-4, temperature current detecting unit 1-3, voltage detection unit 1-2, power control unit 1-1 forms, wherein, power control unit 1-1 is realized by control chip, to be serially connected with in power supply that (wherein power supply 1 is to high frequency oscillation unit 2, high-speed driving unit 3 is powered, power supply 2 powers to high frequency power amplifying unit 4), in order to control the break-make of the power supply of high frequency power amplifying unit 4, whether voltage detection unit 1-2 is for detecting input dc power in normal operating voltage range, whether temperature current detecting unit 1-3 is normal for the operating state detecting high frequency power amplifying unit 4, voltage stabilizing circuit 1-4 is then high frequency oscillation unit 2, high-speed driving unit 3 provides the power supply needed for normal work.
With reference to shown in Fig. 3, high frequency oscillation unit 2 is made up of series crystal oscillators 2-1 and duty ratio adjusting circuit 2-2, series crystal oscillators 2-1 is for generation of required high-frequency signal, and duty ratio adjusting circuit 2-2 then regulates the duty ratio of high-frequency signal thus changes the power output of high frequency power amplifying unit 4.
With reference to shown in Fig. 4, high-speed driving unit 3 drives 3-3 to form by buffer 3-1 and 2 MOSFET high-side driver 3-2 and low side, buffer 3-1 is used for carrying out shaping to the high-frequency signal of input, amplify, change into differential signal, link high-side driver 3-2 and low side respectively to drive 3-3, high-side driver 3-2 and low side to drive 3-3 to export with drain electrode with independent source electrode respectively to merge into drive singal again.
With reference to shown in Fig. 5, high frequency power amplifying unit 4 is made up of a pair above-mentioned enhancement mode GaN power fet, i.e. enhancement mode GaN power fet 4-1 and enhancement mode GaN power fet 4-2 (can be that multipair parallel connection is to strengthen drive current), under the effect of drive singal, make it be operated on off state, power consumption on such power tube can be reduced to minimum, thus greatly reduce the caloric value of high frequency electric source, improve the operating efficiency of high frequency electric source.High frequency electric source is exported again after impedance matching circuit 4-3 mates output impedance.Feedback temperature, current signal detect to power protecting circuit 1 more simultaneously.
Above to the high-frequency drive power supply of the wireless power transmission device of a kind of Class D structure provided by the present invention, be described in detail, apply specific embodiment herein to set forth principle of the present invention and execution mode, more than illustrate it is be applicable to help to understand method of the present invention and core concept thereof, simultaneously for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not understand limitation of the present invention.
Claims (7)
1. the wireless power transmission device of a Class D structure high frequency electric source equipment, is made up of power protecting circuit, high frequency oscillation unit, high-speed driving unit, high frequency power amplifying unit; Described power protecting circuit provides operating voltage for each unit, and in input overvoltage, high frequency power amplifying unit overcurrent and overheated time protection is provided, high frequency oscillation unit produces a high-frequency signal and is sent to high-speed driving unit, high-speed driving unit generates differential signal by after high-frequency signal shaping, again respectively through high-end, the low side driver output DH adopting independent source electrode and drain electrode to export and DL signal, for driving high frequency power amplifying unit; High frequency power amplifying unit exports after input signal is carried out power amplification, as the high frequency electric source in wireless power transmission systems.The wireless power transmission device high frequency electric source equipment of a kind of Class D structure as claimed in claim 1, is characterized in that: the half-bridge D-type power amplifier that described high frequency power amplifying unit is made up of 2 enhancement mode GaN power fets.
2. the wireless power transmission device high frequency electric source equipment of a kind of Class D structure as claimed in claim 1, is characterized in that: described high-speed driving unit is made up of a shaping differential output circuit and high-side driver, a low-side driver circuitry.
3. the wireless power transmission device high frequency electric source equipment of a kind of Class D structure as claimed in claim 1, is characterized in that: described high-speed driving unit high-side driver and low side drive all to adopt independent source electrode and drain to export and drive.
4. the wireless power transmission device high frequency electric source equipment of a kind of Class D structure as claimed in claim 1, it is characterized in that: described high frequency oscillation unit uses the series oscillator of quartz crystal composition, and regulate the duty ratio of frequency of oscillation by a duty ratio adjusting circuit.
5. the wireless power transmission device high frequency electric source equipment of a kind of Class D structure as claimed in claim 1, is characterized in that: described power protecting circuit is provided with overvoltage, current limliting and temperature protection function.
6. the wireless power transmission device high frequency electric source equipment of a kind of Class D structure as claimed in claim 1, it is characterized in that: described high frequency power amplifying unit comprises the half-bridge D-type power amplifier of 1 pair of enhancement mode GaN power fet composition, then by exporting high frequency electric source after an output impedance match circuit.
7. the wireless power transmission device high frequency electric source equipment of a kind of Class D structure as claimed in claim 1, is characterized in that: the operating frequency of described high frequency power amplifying unit can meet the applicable operating frequency range of wireless power transmission, i.e. 1kHz-30MHz.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104242714A true CN104242714A (en) | 2014-12-24 |
| CN104242714B CN104242714B (en) | 2018-01-02 |
Family
ID=52230234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104242714B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702245A (en) * | 2016-03-18 | 2016-06-22 | 杭州百隆电子有限公司 | Built-in oscillating buzzer driving chip set and active buzzer thereof |
| WO2021138819A1 (en) * | 2020-01-07 | 2021-07-15 | Oppo广东移动通信有限公司 | Control circuit and control method for switch transistor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336031A (en) * | 2008-06-02 | 2008-12-31 | 哈尔滨工业大学 | Electronic ballast of metal halogenate lamp for projector |
| CN101420223A (en) * | 2007-10-23 | 2009-04-29 | 三星电子株式会社 | Differential transmitter |
| CN101674071A (en) * | 2008-09-11 | 2010-03-17 | 上海华虹Nec电子有限公司 | Physical layer interface circuit |
| CN102075833A (en) * | 2011-01-13 | 2011-05-25 | 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 |
| 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 |
| CN102882821A (en) * | 2012-09-13 | 2013-01-16 | 清华大学 | On-off keying (OOK) radio frequency receiver |
| 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 |
| 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 |
-
2014
- 2014-07-10 CN CN201410326100.3A patent/CN104242714B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420223A (en) * | 2007-10-23 | 2009-04-29 | 三星电子株式会社 | Differential transmitter |
| CN101336031A (en) * | 2008-06-02 | 2008-12-31 | 哈尔滨工业大学 | Electronic ballast of metal halogenate lamp for projector |
| CN101674071A (en) * | 2008-09-11 | 2010-03-17 | 上海华虹Nec电子有限公司 | Physical layer interface circuit |
| CN102075833A (en) * | 2011-01-13 | 2011-05-25 | 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 |
| 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 |
| 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 |
| CN102882821A (en) * | 2012-09-13 | 2013-01-16 | 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 |
Non-Patent Citations (1)
| Title |
|---|
| 崔剑慧，等: "一种应用于物联网的双频段射频Ｄ类功放的设计", 《微电子学与计算机》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702245A (en) * | 2016-03-18 | 2016-06-22 | 杭州百隆电子有限公司 | Built-in oscillating buzzer driving chip set and active buzzer thereof |
| WO2021138819A1 (en) * | 2020-01-07 | 2021-07-15 | Oppo广东移动通信有限公司 | Control circuit and control method for switch transistor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104242714B (en) | 2018-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101882860B (en) | Insulated gate bipolar translator (IGBT) drive and protection circuit | |
| CN103138541B (en) | Drive transformer isolation self-adaptation drive circuit | |
| CN103260316B (en) | Two-circuit current-limiting driving circuit and two-circuit current-limiting driving method | |
| CN109067366A (en) | A kind of GaN power amplifier power-supplying circuit, upper power down control method | |
| CN102624223A (en) | Drive power circuit and driving method of low-energy-consumption relay | |
| CN201623652U (en) | Full bridge inverter circuit and unidirection inverter power supply comprising the same | |
| CN105576977A (en) | Circuit and method for resonant network | |
| CN209732613U (en) | Ultrasonic atomization piece oscillation circuit and ultrasonic electronic cigarette | |
| CN101582639B (en) | Switch power supply circuit | |
| CN104242714A (en) | High-frequency power supply equipment for wireless power transmission device of Class D structure | |
| CN204068750U (en) | A kind of wireless power transmission device high frequency electric source equipment of Class D structure | |
| CN203984269U (en) | A kind of wireless power transmission device high frequency electric source equipment of Class E structure | |
| CN108199704A (en) | Switch mosfet control method under a kind of inductive load | |
| CN104627018A (en) | Electric automobile motor control system | |
| CN205356184U (en) | Low voltage and high current pulse generator control system | |
| CN108258814B (en) | Wireless power transmission system | |
| CN204190613U (en) | For half-bridge circuit and the electromagnetic stove system of induction heating | |
| CN103226374A (en) | Maximum power point tracking circuit of constant flow source control photovoltaic panel | |
| CN107612160B (en) | Magnetic coupling parallel resonance type wireless power transmission device | |
| CN110138186A (en) | Device for power switching driving circuit and power electronic equipment | |
| CN104242715B (en) | A kind of wireless power transmission device high frequency electric source equipment of Class E structures | |
| CN204518107U (en) | Electromagnetic Heating control circuit and electromagnetic appliance | |
| CN203523020U (en) | Audio power amplifier circuit and wireless loudspeaker box | |
| CN208386255U (en) | A kind of wireless electric energy transmission device with constant current output characteristic | |
| CN108347104B (en) | Internal-feed type wireless power transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20180102 Termination date: 20210710 |