CN203984269U - A kind of wireless power transmission device high frequency electric source equipment of Class E structure - Google Patents
A kind of wireless power transmission device high frequency electric source equipment of Class E structure Download PDFInfo
- Publication number
- CN203984269U CN203984269U CN201420380982.7U CN201420380982U CN203984269U CN 203984269 U CN203984269 U CN 203984269U CN 201420380982 U CN201420380982 U CN 201420380982U CN 203984269 U CN203984269 U CN 203984269U
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- high frequency
- power
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- electric source
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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
Abstract
The wireless power transmission device high frequency electric source equipment that the utility model discloses a kind of Class E structure, comprises power protecting circuit, high frequency oscillation unit, high-speed driving unit, high frequency power amplifying unit.Wherein, power protecting circuit is to high frequency power source system power supply and the circuit of abnormal protection is provided, and out-put supply is given the power supply of other 3 unit; High frequency oscillation unit adopts higher-order of oscillation principle that direct current is produced to a high-frequency signal through vibration and outputs to high-speed driving circuit; High-speed driving circuit will generate differential signal after high-frequency signal shaping, more respectively through adopting high-end, low side driver output DH and the DL signal of independent source electrode and drain electrode output, for driving high frequency power amplifying unit; The E class power amplification unit that high frequency power amplifying unit is made up of enhancement mode GaN power fet, high frequency choke coil, filter, carries out input signal to export after power amplification, as the high frequency electric source in wireless power transmission systems.
Description
Technical field
The utility model relates to wireless technology of transmission of electricity field, particularly relates to a kind of high frequency electric source equipment.
Background technology
This cutting edge technology of wireless transmission of electricity is considered to the development of electric power science and technology from now on and is 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 technology of transmission of electricity most with prospects is the technology based on magnetic coupling resonance mode, due to the design work frequency of present this technology many at 1kHz between 30MHz, and high frequency electric source in this technology is one of design key assembly.Prior art adopts the oscillator of Colpitts capacitance three-point type as high frequency electric source more, and the shortcoming of which is that efficiency is lower, thereby has affected the efficiency of whole wireless power transmission systems.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of small size high frequency electric source equipment solution of novel efficient, can effectively realize the power stage of multikilowatt, and power output is adjustable.
The utility model 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 E structure, is made up of power protecting circuit, high frequency oscillation unit, high-speed driving unit, high frequency power amplifying unit; Power protecting circuit provides operating voltage for each unit; and be input overvoltage; high frequency power amplifying unit overcurrent and protection is provided when overheated; high frequency oscillation unit produces a high-frequency signal and is sent to high-speed driving unit; amplify output by high-speed driving unit drives high frequency power amplifying unit again, as the high frequency electric source in wireless power transmission systems.
Further, the wireless power transmission device of a kind of Class E structure of the present utility model is used in high frequency electric source equipment, the E power-like amplifier that described high frequency power amplifying unit is made up of enhancement mode GaN power fet.
Further, the wireless power transmission device of a kind of Class E structure of the present utility model is with in high frequency electric source equipment, and described high-speed driving unit adopts independent source electrode and drain electrode output (source and sink output) to drive.
Further, the wireless power transmission device of a kind of Class E structure of the present utility model is with in high frequency electric source equipment, described high frequency oscillation unit uses the series oscillator of quartz crystal composition, and regulates the duty ratio of frequency of oscillation by a d type flip flop, so that the power of regulation output.
Further, the wireless power transmission device of a kind of Class E structure of the present utility model is with in high frequency electric source equipment, and described power protecting circuit is provided with temperature, overvoltage, and current-limiting protection, can power cutoff protection equipment in the time of abnormal conditions.
Further, the wireless power transmission device of a kind of Class E structure of the present utility model is with in high frequency electric source equipment, and described high frequency power amplifying unit comprises the parallel connection of one or more enhancement mode GaN power fet, 1 high frequency choke coil RFC, LC series resonant circuit.
The utility model 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, this high frequency electric source scheme drive circuit has used independent source electrode and drain electrode output, drive the E power-like amplifier being formed by enhancement mode GaN power fet, the GaN power tube wherein adopting, compared with adopting traditional MOS power tube, there is lower switching loss and conduction loss, can greatly improve the efficiency of high frequency electric source, heating is simultaneously few, and volume is little.
Because enhancement mode GaN power tube can bear the switching rate being exceedingly fast, adopt the E power-like amplifier of enhancement mode GaN power tube, can reach the operating frequency range requirement that is applicable to wireless transmission of electricity, reach the operating frequency range of 1kHz to 30MHz.
Brief description of the drawings
Fig. 1 is the general frame of the utility model system.
Fig. 2 is the electrical block diagram of power protecting circuit in the utility model.
Fig. 3 is the electrical block diagram of the utility model medium-high frequency oscillating unit.
Fig. 4 is the electrical block diagram of the utility model high speed driver element.
Fig. 5 is the electrical block diagram of the utility model medium-high frequency power amplification unit.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
Method provided by the utility model is to adopt direct current as input, produces a high-frequency signal and outputs to high-speed driving unit, then gone to drive the E power-like amplifier being made up of enhancement mode GaN power fet by high-speed driving unit, realizes the output of high-frequency electrical.The duty ratio that changes high-frequency signal, realizes the adjusting of higher-order of oscillation output power of power supply.
A wireless power transmission device high frequency electric source equipment for Class E 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, shown in Fig. 1; Described power protecting circuit is to high frequency power source system power supply and the circuit of abnormal protection is provided, and out-put supply is given the power supply of other 3 unit; High frequency oscillation unit adopts higher-order of oscillation principle that direct current is produced to a high-frequency signal through vibration and outputs to high-speed driving circuit; High-speed driving circuit will generate differential signal after high-frequency signal shaping, more respectively through adopting high-end, low side driver output DH and the DL signal of independent source electrode and drain electrode output, for driving high frequency power amplifying unit; The E class power amplification unit that high frequency power amplifying unit is made up of enhancement mode GaN power fet, high frequency choke coil, filter, carries out input signal to export after power amplification, as the high frequency electric source in wireless power transmission systems.
Power protecting circuit 1 powers after voltage stabilizing, to direct current high frequency oscillation unit 2, high-speed driving unit 3.The electric current simultaneously feeding back according to DC input voitage and high frequency power amplifying unit 4 again and temperature information control output to the power supply of high frequency power amplifying unit 4, and this control function can realize by control chip.
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 composition, wherein, power control unit 1-1 is realized by control chip, be serially connected with in power supply that (wherein power supply 1 is to high frequency oscillation unit 2, high-speed driving unit 3 powers, power supply 2 powers to high frequency power amplifying unit 4), in order to control the break-make of power supply of high frequency power amplifying unit 4, voltage detection unit 1-2 for detection of input dc power whether in normal operating voltage range, whether temperature current detecting unit 1-3 is normal for detection of the operating state of high frequency power amplifying unit 4, voltage stabilizing circuit 1-4 is high frequency oscillation unit 2, high-speed driving unit 3 provides normal work required power supply.
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, thereby duty ratio adjusting circuit 2-2 regulates the duty ratio of high-frequency signal to change the power output of high frequency power amplifying unit 4.
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 for carrying out shaping to the high-frequency signal of input, amplify, change into differential signal, link respectively high-side driver 3-2 and low side and drive 3-3, high-side driver 3-2 and low side drive 3-3 to merge into driving signal with independent source electrode and drain electrode output respectively again.
Shown in Fig. 5,4. high frequency power amplifying unit is by power tube 4-1, be enhancement mode GaN power fet (can be one or more parallel connections), high frequency choke coil 4-2, an E class power amplification unit of LC filter 4-3 composition makes it be operated on off state under the effect that drives signal, and the power consumption on power tube can be reduced to minimum like this, thereby reduce greatly the caloric value of high frequency electric source, improved the operating efficiency of high frequency electric source.Feedback temperature, current signal detect to power protecting circuit 1 more simultaneously.
The high-frequency drive power supply of the wireless power transmission device to a kind of Class E structure provided by the utility model above, be described in detail, having applied specific embodiment herein sets forth principle of the present utility model and execution mode, more than explanation is to be applicable to help to understand method of the present utility model and core concept thereof, simultaneously for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not understood restriction of the present utility model.
Claims (7)
1. the wireless power transmission device of a Class E structure high frequency electric source equipment, is characterized in that: comprise power protecting circuit, high frequency oscillation unit, high-speed driving unit, high frequency power amplifying unit; Wherein, power protecting circuit is to high frequency power source system power supply and the circuit of abnormal protection is provided, and be that other 3 unit power; High frequency oscillation unit adopts higher-order of oscillation principle that direct current is produced to a high-frequency signal through vibration and outputs to high-speed driving circuit; High-speed driving circuit amplifies high-frequency signal shaping in order to drive high frequency power amplifying unit; Input signal is amplified output by high frequency power amplifying unit, as the high frequency electric source in wireless power transmission systems.
2. the wireless power transmission device high frequency electric source equipment of a kind of Class E 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 a high-side driver, a low-side driver circuitry.
3. the wireless power transmission device high frequency electric source equipment of a kind of Class E structure as claimed in claim 1, is characterized in that: described high-speed driving unit adopts independent source electrode and drain electrode output to drive.
4. the wireless power transmission device high frequency electric source equipment of a kind of Class E 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 by the duty ratio of a duty ratio adjusting circuit adjusting frequency of oscillation, so that the power of regulation output.
5. the wireless power transmission device high frequency electric source equipment of a kind of Class E structure as claimed in claim 1, is characterized in that: described power protecting circuit is provided with temperature, overvoltage, current-limiting protection function.
6. the wireless power transmission device high frequency electric source equipment of a kind of Class E structure as claimed in claim 1, it is characterized in that: described high frequency power amplifying unit is by the parallel connection of one or more enhancement mode GaN power fet, 1 E power-like amplifier that high frequency choke coil RFC, LC series resonant circuit form, 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 E structure as claimed in claim 1, is characterized in that: the operating frequency of described high frequency power amplifying unit can meet the applicable frequency range of wireless transmission of electricity, i.e. 1kHz-30MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420380982.7U CN203984269U (en) | 2014-07-10 | 2014-07-10 | A kind of wireless power transmission device high frequency electric source equipment of Class E structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420380982.7U CN203984269U (en) | 2014-07-10 | 2014-07-10 | A kind of wireless power transmission device high frequency electric source equipment of Class E structure |
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| CN203984269U true CN203984269U (en) | 2014-12-03 |
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| CN201420380982.7U Expired - Fee Related CN203984269U (en) | 2014-07-10 | 2014-07-10 | A kind of wireless power transmission device high frequency electric source equipment of Class E structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242715A (en) * | 2014-07-10 | 2014-12-24 | 丁文萍 | High-frequency power supply equipment for wireless power transmission device of Class E structure |
-
2014
- 2014-07-10 CN CN201420380982.7U patent/CN203984269U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242715A (en) * | 2014-07-10 | 2014-12-24 | 丁文萍 | High-frequency power supply equipment for wireless power transmission device of Class E structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Ding Wenping Document name: Notification of Termination of Patent Right |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |