CN203707858U - Electric bicycle magnetic coupling resonant wireless charger - Google Patents
Electric bicycle magnetic coupling resonant wireless charger Download PDFInfo
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- CN203707858U CN203707858U CN201420004007.6U CN201420004007U CN203707858U CN 203707858 U CN203707858 U CN 203707858U CN 201420004007 U CN201420004007 U CN 201420004007U CN 203707858 U CN203707858 U CN 203707858U
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Abstract
The utility model provides an electric bicycle magnetic coupling resonant wireless charger comprising a main circuit part and a control circuit part. The main circuit part comprises a full-bridge rectification filter circuit, a half-bridge inversion circuit, a transmitting terminal series connection resonant circuit, a receiving terminal series connection resonant circuit, a high-frequency transformer T1 and a high-frequency rectification filter circuit. The control circuit part comprises a receiving terminal voltage and current detection circuit, a receiving terminal charging data transmitting circuit, a transmitting terminal wireless data receiving circuit, a transmitting terminal current detection circuit, a phase-locked loop frequency tracking circuit, a PWM inversion control circuit and an inversion drive circuit. Wireless charging is adopted to substitute the wired charging so that electric bicycle magnetic coupling resonant wireless charging is realized, electric spark generated in the plugging process of a power plug is eliminated, troubles which influence the service life of the plug and are caused by poor contact are eliminated, and thus charging operation is facilitated. Besides, electric energy is transmitted via resonant coupling, and electric energy transmission frequency is reduced so that influence of electromagnetic radiation on environment is greatly reduced.
Description
Technical field
The utility model relates to magnet coupled resonant type wireless electric energy transmission technology, especially a kind of electric bicycle magnet coupled resonant type wireless charger.
Background technology
The charger that current electric bicycle uses, is substantially all wired charger, and attaching plug can produce electric spark in plug process, affects the plug life-span, and the time has been grown and also can cause loose contact.In electric bicycle this technical field of charging, also there is not ripe wireless charging technical scheme at present.
The subject matter that wireless charging exists is at present, the one, efficiency is not high, main cause is that the control ratio of energy is more difficult, cannot really realize the point-to-point transmission of energy, meeting scattering equal loss part energy in the process of transmission, the efficiency of energy converter is not high is also the key factor that affects whole system efficiency; The 2nd, electromagnetic radiation safety problem, needs to solve on the impact of personal safety and surrounding environment.Because the transmission of wireless energy both can be well controlled unlike traditional supply power mode on transmission path, also unlike wireless telecommunications, transmit small power, high-octane energy density will certainly be brought impact to personal safety.
Magnet coupled resonant type wireless delivery of electrical energy adopts two same frequency resonant circuits, utilizes magnetic field to pass through near field transmission, and radiation is little, has directivity, moderate distance transmission, and efficiency of transmission is higher.In magnet coupled resonant type wireless delivery of electrical energy, electromagnetic field increases and decay rapidly with transmission range, utilize two circuit that resonance coupling occurs to catch the electromagnetic field with range attenuation, in the time of launching circuit and receiving loop generation resonance, make most of energy be delivered to receiving loop by launching circuit.
Therefore utilizing magnet coupled resonant type wireless electric energy transmission technology to realize wireless charger, is that a kind of efficiency is high, the technical scheme that electromagnetic radiation is relatively little.
Summary of the invention
The purpose of this utility model is to provide a kind of electric bicycle magnet coupled resonant type wireless charger, can eliminate the electric spark that attaching plug produces in plug process, affects the trouble that plug life-span and loose contact bring, and facilitates charging operations; By resonance coupled transfer electric energy, greatly reduce the impact of Electromagnetic Radiation on Environment.The technical solution adopted in the utility model is:
A kind of electric bicycle magnet coupled resonant type wireless charger, comprises main circuit part and control circuit part.Main circuit part comprises full-bridge rectification filter circuit, half-bridge inversion circuit, transmitting terminal series resonant circuit, receiving terminal series resonant circuit, high frequency transformer T1, rectifier filter circuit; Control circuit part comprises receiving-end voltage current detection circuit, receiving terminal charging data transmit circuit, transmitting terminal receive data by wireless circuit, transmitting terminal current detection circuit, phase-locked loop frequency tracking circuit, PWM inverter control circuit, inverse changing driving circuit.
Input ac voltage converts galvanic current to through full-bridge rectification filter circuit and presses Ud1, and through half-bridge inversion circuit output high-frequency ac voltage U1, in transmitting terminal series resonant circuit, producing resonance potential and resonance current is launching circuit resonance current i1; The resonance frequency of receiving terminal series resonant circuit and transmitting terminal series resonant circuit equates, produce receiving loop output voltage U 2 by electromagnetic coupled resonance, receiving loop output voltage U 2 is transformed into and exports through high frequency transformer T1 the high frequency voltage that charging voltage Uo is corresponding, carry out rectification and filtering through rectifier filter circuit, output charging voltage Uo.Receiving-end voltage current detection circuit detects charging voltage and the charging current of receiving terminal output, and charging voltage and charging current data are through receiving terminal charging data transmit circuit wireless transmission subsequently; Transmitting terminal receive data by wireless circuit receives and sends the charging voltage receiving and charging current data to PWM inverter control circuit; Launching circuit resonance current, by after transmitting terminal current detection circuit acquisition testing, produces frequency-tracking signal through phase-locked loop frequency tracking circuit, gives PWM inverter control circuit; PWM inverter control circuit is according to charging voltage set-point, charging voltage and charging current detected value and the frequency-tracking signal set, produce the PWM pulse-width modulation control signal of respective frequencies and pulse duration, isolate and power amplification through inverse changing driving circuit, output driving pulse Ug1 and Ug2, control the switching tube in half-bridge inversion circuit.Pulse width modulation (PWM) is the abbreviation of English " Pulse Width Modulation ".
Described full-bridge rectification filter circuit comprises diode D1～D4 and filter capacitor Cd1, and diode D1～D4 forms an input full bridge rectifier, and filter capacitor Cd1 is connected in parallel on two outputs of input full bridge rectifier.
Described half-bridge inversion circuit comprises MOS switching tube VT1, VT2 and anti-paralleled diode VD1, VD2; Described transmitting terminal series resonant circuit comprises resonant capacitance C1 and the transmitting coil L1 of series connection; The grid of switching tube VT1, VT2 meets respectively driving pulse Ug1 and Ug2, and the drain electrode of switching tube VT1 connects the positive output end of input full bridge rectifier, and source electrode connects the drain electrode of switching tube VT2, and the source electrode of switching tube VT2 connects the negative output terminal of input full bridge rectifier; The negative electrode of diode VD1 and anode connect respectively drain electrode and the source electrode of switching tube VT1; The negative electrode of diode VD2 and anode connect respectively drain electrode and the source electrode of switching tube VT2; The drain node that is connected of switching tube VT1 source electrode and switching tube VT2 connects one end of transmitting terminal series resonant circuit, the negative output terminal of another termination input full bridge rectifier of transmitting terminal series resonant circuit.
Described receiving terminal series resonant circuit comprises resonant capacitance C2 and the receiving coil L2 of series connection; The two ends of series resonant circuit are connected with the elementary two ends of high frequency transformer T1 respectively; The value of resonant capacitance C1 and transmitting coil L1, and the value of resonant capacitance C2 and receiving coil L2 equates the resonance frequency of receiving terminal series resonant circuit and transmitting terminal series resonant circuit, and resonance frequency is less than 200kHz.
Described rectifier filter circuit comprises diode Dr1-Dr4 and filter capacitor Cd2, diode Dr1-Dr4 composition high frequency full bridge rectifier, the secondary two ends of the input termination high frequency transformer T1 of this high frequency full bridge rectifier, filter capacitor Cd2 is connected in parallel on two outputs of this high frequency full bridge rectifier.
Described receiving-end voltage current detection circuit, comprises direct current voltage sensor V2 and DC current sensor A2, for detection of output charging voltage and charging current; Direct current voltage sensor V2 is connected in parallel on two outputs of high frequency full bridge rectifier, and DC current sensor A2 is arranged on an output of high frequency full bridge rectifier.
Described receiving terminal charging data transmit circuit is for sending to transmitting terminal receive data by wireless circuit by charging voltage and charging current data wireless; Transmitting terminal receive data by wireless circuit is used for receiving charging voltage and charging current data and sends PWM inverter control circuit to.
Described transmitting terminal current detection circuit comprises current sensor A1, is launching circuit resonance current i1 for detection of the electric current of transmitting terminal series resonant circuit.
Described phase-locked loop frequency tracking circuit, for making launching circuit resonance current i1 follow the tracks of launching circuit resonance potential, keeps phase angle of launching circuit resonance current i1 hysteresis launching circuit resonance potential.
Described PWM inverter control circuit, for according to charging voltage set-point, charging voltage and charging current detected value and the frequency-tracking signal set, produces the PWM pulse-width modulation control signal of respective frequencies and pulse duration, offers inverse changing driving circuit.
Described inverse changing driving circuit for PWM pulse-width modulation control signal is isolated, voltage and current amplifies, and drives switching tube VT1 and VT2 in half-bridge inversion circuit.
The utility model has the advantage of and adopt wireless charging to replace wired charging, eliminate the electric spark that attaching plug produces in plug process, affect the trouble that plug life-span and loose contact bring, facilitate charging operations; By resonance coupled transfer electric energy, reduce radio energy transmitted frequency, electric energy transmitted frequency eases down to below 200kHz, greatly reduces the impact of Electromagnetic Radiation on Environment; Adopt semi-bridge inversion and the control of PWM pulsewidth power, simplify circuit structure.
Brief description of the drawings
Fig. 1 is electric bicycle magnet coupled resonant type wireless charger construction block diagram.
Fig. 2 is electric bicycle magnet coupled resonant type wireless charger main circuit schematic diagram.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
The technical scheme providing according to the utility model, a kind of electric bicycle magnet coupled resonant type wireless charger, is characterized in that: comprise main circuit part and control circuit part; Main circuit part comprises full-bridge rectification filter circuit, half-bridge inversion circuit, transmitting terminal series resonant circuit, receiving terminal series resonant circuit, high frequency transformer T1, rectifier filter circuit; Control circuit part comprises receiving-end voltage current detection circuit, receiving terminal charging data transmit circuit, transmitting terminal receive data by wireless circuit, transmitting terminal current detection circuit, phase-locked loop frequency tracking circuit, PWM inverter control circuit, inverse changing driving circuit.
Full-bridge rectification filter circuit comprises diode D1～D4 and filter capacitor Cd1, and diode D1～D4 forms an input full bridge rectifier, and filter capacitor Cd1 is connected in parallel on two outputs of input full bridge rectifier.
Half-bridge inversion circuit comprises MOS switching tube VT1, VT2 and anti-paralleled diode VD1, VD2.Transmitting terminal series resonant circuit comprises resonant capacitance C1 and the transmitting coil L1 of series connection; The grid of switching tube VT1, VT2 meets respectively driving pulse Ug1 and Ug2, and the drain electrode of switching tube VT1 connects the positive output end of input full bridge rectifier, and source electrode connects the drain electrode of switching tube VT2, and the source electrode of switching tube VT2 connects the negative output terminal of input full bridge rectifier; The negative electrode of diode VD1 and anode connect respectively drain electrode and the source electrode of switching tube VT1; The negative electrode of diode VD2 and anode connect respectively drain electrode and the source electrode of switching tube VT2; The drain node that is connected of switching tube VT1 source electrode and switching tube VT2 connects one end of transmitting terminal series resonant circuit, the negative output terminal of another termination input full bridge rectifier of transmitting terminal series resonant circuit.
Receiving terminal series resonant circuit comprises resonant capacitance C2 and the receiving coil L2 of series connection; The two ends of series resonant circuit are connected with the elementary two ends of high frequency transformer T1 respectively; The value of resonant capacitance C1 and transmitting coil L1, and the value of resonant capacitance C2 and receiving coil L2 equates the resonance frequency of receiving terminal series resonant circuit and transmitting terminal series resonant circuit, and resonance frequency is less than 200kHz.
Rectifier filter circuit comprises diode Dr1-Dr4 and filter capacitor Cd2, diode Dr1-Dr4 composition high frequency full bridge rectifier, the secondary two ends of the input termination high frequency transformer T1 of this high frequency full bridge rectifier, filter capacitor Cd2 is connected in parallel on two outputs of this high frequency full bridge rectifier.
Receiving-end voltage current detection circuit, comprises direct current voltage sensor V2 and DC current sensor A2, for detection of output charging voltage and charging current; Direct current voltage sensor V2 is connected in parallel on two outputs of high frequency full bridge rectifier, and DC current sensor A2 is arranged on an output of high frequency full bridge rectifier.
Transmitting terminal current detection circuit comprises current sensor A1, is launching circuit resonance current i1 for detection of the electric current of transmitting terminal series resonant circuit.
System general diagram as shown in Figure 1, main circuit part: single-phase input ac voltage ~ U converts galvanic current to through diode full-bridge rectification filter circuit and presses Ud1, through half-bridge inversion circuit output high-frequency ac voltage U1, in the transmitting terminal series resonant circuit of resonant capacitance C1 and transmitting coil L1 composition, produce resonance potential and resonance current is launching circuit resonance current i1; Resonant capacitance C2 and receiving coil L2 composition receiving terminal series resonant circuit, the resonance frequency of receiving terminal series resonant circuit and transmitting terminal series resonant circuit equates, produce receiving loop output voltage U 2 and receiving loop resonance current i2 by electromagnetic coupled resonance, receiving loop output voltage U 2 is transformed into and exports through high frequency transformer T1 the high frequency voltage that charging voltage Uo is corresponding, carry out rectification and filtering through rectifier filter circuit, output charging voltage Uo.
Control circuit part: charging voltage and the charging current of receiving terminal output are transformed into 1-5V normal voltage (corresponding 4-20mA) through voltage sensor V2, current sensor A2 by receiving-end voltage current detection circuit, through the receiving terminal charging data transmit circuit wireless transmission of single-chip microcomputer and wireless communication module composition; The transmitting terminal receive data by wireless circuit being made up of single-chip microcomputer and wireless communication module sends the charging voltage receiving and charging current data to PWM inverter control circuit; Launching circuit resonance current passes through, after current sensor A1, transmitting terminal current detection circuit acquisition testing, to be transformed into 1-5V standard ac square-wave voltage, produces frequency-tracking signal through phase-locked loop frequency tracking circuit, gives PWM inverter control circuit; PWM inverter control circuit is according to charging voltage set-point, charging voltage and charging current detected value and the frequency-tracking signal set, produce the PWM pulse-width modulation control signal of respective frequencies and pulse duration, isolate and power amplification through inverse changing driving circuit, output driving pulse Ug1 and Ug2, control switching tube VT1 and VT2 in half-bridge inversion circuit.
Further as shown in Figure 2, main circuit schematic diagram, single phase alternating current (A.C.) voltage ~ U is through the single-phase diode full bridge rectifier of diode D1-D4 composition, be transformed into direct voltage, be transformed into galvanic current through filter capacitor Cd1 and press Ud1, be transformed into high-frequency ac square-wave voltage U1 through the half-bridge inversion circuit being mainly made up of VT1, VT2, the transmitting terminal series resonant circuit forming through transmitting coil L1 and resonance capacitor C 1 produces resonance potential and electric current receiving coil L2 is launched in transmitting coil L1.Receiving coil L2 and resonance capacitor C 2 form receiving terminal series resonant circuit.Receiving loop output voltage U 2, is transformed into and exports through high frequency transformer T1 the high frequency voltage that charging voltage Uo is corresponding, is transformed into direct voltage via the full bridge rectifier of high-frequency diode Dr1-Dr4 composition, through filter capacitor Cd2 filtering, and output charging voltage Uo.
The utility model adopts conventional electronic switching device can realize radio energy charging, by resonance coupled transfer electric energy, greatly reduces the impact of Electromagnetic Radiation on Environment simultaneously.Adopt semi-bridge inversion and the control of PWM pulsewidth power, simplify circuit structure.
Claims (9)
1. an electric bicycle magnet coupled resonant type wireless charger, is characterized in that: comprise main circuit part and control circuit part;
Main circuit part comprises full-bridge rectification filter circuit, half-bridge inversion circuit, transmitting terminal series resonant circuit, receiving terminal series resonant circuit, high frequency transformer T1, rectifier filter circuit;
Control circuit part comprises receiving-end voltage current detection circuit, receiving terminal charging data transmit circuit, transmitting terminal receive data by wireless circuit, transmitting terminal current detection circuit, phase-locked loop frequency tracking circuit, PWM inverter control circuit, inverse changing driving circuit;
Input ac voltage converts galvanic current to through full-bridge rectification filter circuit and presses Ud1, and through half-bridge inversion circuit output high-frequency ac voltage U1, in transmitting terminal series resonant circuit, producing resonance potential and resonance current is launching circuit resonance current i1; The resonance frequency of receiving terminal series resonant circuit and transmitting terminal series resonant circuit equates, produce receiving loop output voltage U 2 by electromagnetic coupled resonance, receiving loop output voltage U 2 is transformed into and exports through high frequency transformer T1 the high frequency voltage that charging voltage Uo is corresponding, carry out rectification and filtering through rectifier filter circuit, output charging voltage Uo;
Receiving-end voltage current detection circuit detects charging voltage and the charging current of receiving terminal output, and charging voltage and charging current data are through receiving terminal charging data transmit circuit wireless transmission subsequently; Transmitting terminal receive data by wireless circuit receives and sends the charging voltage receiving and charging current data to PWM inverter control circuit; Launching circuit resonance current, by after transmitting terminal current detection circuit acquisition testing, produces frequency-tracking signal through phase-locked loop frequency tracking circuit, gives PWM inverter control circuit; PWM inverter control circuit is according to charging voltage set-point, charging voltage and charging current detected value and the frequency-tracking signal set, produce the PWM pulse-width modulation control signal of respective frequencies and pulse duration, isolate and power amplification through inverse changing driving circuit, output driving pulse Ug1 and Ug2, control the switching tube in half-bridge inversion circuit.
2. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 1, is characterized in that:
Described full-bridge rectification filter circuit comprises diode D1～D4 and filter capacitor Cd1, and diode D1～D4 forms an input full bridge rectifier, and filter capacitor Cd1 is connected in parallel on two outputs of input full bridge rectifier;
Described half-bridge inversion circuit comprises MOS switching tube VT1, VT2 and anti-paralleled diode VD1, VD2; Described transmitting terminal series resonant circuit comprises resonant capacitance C1 and the transmitting coil L1 of series connection; The grid of switching tube VT1, VT2 meets respectively driving pulse Ug1 and Ug2, and the drain electrode of switching tube VT1 connects the positive output end of input full bridge rectifier, and source electrode connects the drain electrode of switching tube VT2, and the source electrode of switching tube VT2 connects the negative output terminal of input full bridge rectifier; The negative electrode of diode VD1 and anode connect respectively drain electrode and the source electrode of switching tube VT1; The negative electrode of diode VD2 and anode connect respectively drain electrode and the source electrode of switching tube VT2;
The drain node that is connected of switching tube VT1 source electrode and switching tube VT2 connects one end of transmitting terminal series resonant circuit, the negative output terminal of another termination input full bridge rectifier of transmitting terminal series resonant circuit.
3. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 2, is characterized in that:
Described receiving terminal series resonant circuit comprises resonant capacitance C2 and the receiving coil L2 of series connection; The two ends of series resonant circuit are connected with the elementary two ends of high frequency transformer T1 respectively;
The value of resonant capacitance C1 and transmitting coil L1, and the value of resonant capacitance C2 and receiving coil L2 equates the resonance frequency of receiving terminal series resonant circuit and transmitting terminal series resonant circuit, and resonance frequency is less than 200kHz.
4. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 3, it is characterized in that: described rectifier filter circuit comprises diode Dr1～Dr4 and filter capacitor Cd2, diode Dr1～Dr4 composition high frequency full bridge rectifier, the secondary two ends of the input termination high frequency transformer T1 of this high frequency full bridge rectifier, filter capacitor Cd2 is connected in parallel on two outputs of this high frequency full bridge rectifier.
5. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 4, is characterized in that:
Described receiving-end voltage current detection circuit, comprises direct current voltage sensor V2 and DC current sensor A2, for detection of output charging voltage and charging current; Direct current voltage sensor V2 is connected in parallel on two outputs of high frequency full bridge rectifier, and DC current sensor A2 is arranged on an output of high frequency full bridge rectifier.
6. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 5, is characterized in that:
Described receiving terminal charging data transmit circuit is for sending to transmitting terminal receive data by wireless circuit by charging voltage and charging current data wireless; Transmitting terminal receive data by wireless circuit is used for receiving charging voltage and charging current data and sends PWM inverter control circuit to.
7. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 6, is characterized in that:
Described transmitting terminal current detection circuit comprises current sensor A1, is launching circuit resonance current i1 for detection of the electric current of transmitting terminal series resonant circuit.
8. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 7, is characterized in that:
Described phase-locked loop frequency tracking circuit, for making launching circuit resonance current i1 follow the tracks of launching circuit resonance potential, keeps phase angle of launching circuit resonance current i1 hysteresis launching circuit resonance potential.
9. electric bicycle magnet coupled resonant type wireless charger as claimed in claim 8, is characterized in that:
Described PWM inverter control circuit, for according to charging voltage set-point, charging voltage and charging current detected value and the frequency-tracking signal set, produces the PWM pulse-width modulation control signal of respective frequencies and pulse duration, offers inverse changing driving circuit;
Described inverse changing driving circuit for PWM pulse-width modulation control signal is isolated, voltage and current amplifies, and drives switching tube VT1 and VT2 in half-bridge inversion circuit.
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| CN201420004007.6U CN203707858U (en) | 2014-01-03 | 2014-01-03 | Electric bicycle magnetic coupling resonant wireless charger |
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| CN201420004007.6U CN203707858U (en) | 2014-01-03 | 2014-01-03 | Electric bicycle magnetic coupling resonant wireless charger |
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Cited By (15)
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| CN104218687A (en) * | 2014-08-14 | 2014-12-17 | 陈业军 | Frequency tracking device, method and system of wireless-charging transmitting end |
| CN104362771A (en) * | 2014-11-10 | 2015-02-18 | 刘跃进 | Dynamic magnetic coupling resonance array technology supporting wireless mobile charging of electric vehicle |
| CN104659929A (en) * | 2014-08-13 | 2015-05-27 | 管宇 | Magnetic coupling resonance wireless power transmitting equipment and method |
| CN105137173A (en) * | 2015-08-31 | 2015-12-09 | 盛世铸成科技（天津）有限公司 | Wireless charging frequency monitoring device |
| CN105186706A (en) * | 2015-08-12 | 2015-12-23 | 东北农业大学 | Automatic sweep-frequency wireless resonant power transmission device and operation method |
| CN105720832A (en) * | 2015-04-22 | 2016-06-29 | 周景振 | Magnetic resonance wireless charging transmission integration structure type resonance power supply |
| CN105914847A (en) * | 2015-08-31 | 2016-08-31 | 苏州东大金点物联科技有限公司 | Non-electric-contact public electric bicycle charging device |
| CN106374635A (en) * | 2016-10-12 | 2017-02-01 | 许继电源有限公司 | Mobile wireless charging emission transmission circuit of electric vehicle |
| CN106451820A (en) * | 2016-11-23 | 2017-02-22 | 成都信息工程大学 | Wireless power supply and distribution socket system |
| CN106655845A (en) * | 2017-03-13 | 2017-05-10 | 中惠创智（深圳）无线供电技术有限公司 | Series resonant circuit and power supply |
| CN106891763A (en) * | 2017-02-27 | 2017-06-27 | 中国石油大学(华东) | Wireless charging system for electric automobile frequency tracking method |
| CN108574345A (en) * | 2017-03-10 | 2018-09-25 | 重庆邮电大学 | A kind of wireless power transmission equipment transmitting terminal self-adapting tuning device and tuning methods |
| CN108631449A (en) * | 2018-05-10 | 2018-10-09 | 常州星宇车灯股份有限公司 | A kind of radio energy transmission system of automobile tail light |
| CN111279579A (en) * | 2017-11-03 | 2020-06-12 | 喜利得股份公司 | Resonant tank circuit for transmitting electrical energy |
| CN114830272A (en) * | 2020-04-16 | 2022-07-29 | 动量动力学公司 | Safety circuit for wireless power transfer |
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2014
- 2014-01-03 CN CN201420004007.6U patent/CN203707858U/en not_active Expired - Fee Related
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| CN104659929A (en) * | 2014-08-13 | 2015-05-27 | 管宇 | Magnetic coupling resonance wireless power transmitting equipment and method |
| CN104218687A (en) * | 2014-08-14 | 2014-12-17 | 陈业军 | Frequency tracking device, method and system of wireless-charging transmitting end |
| CN104362771A (en) * | 2014-11-10 | 2015-02-18 | 刘跃进 | Dynamic magnetic coupling resonance array technology supporting wireless mobile charging of electric vehicle |
| CN105720832A (en) * | 2015-04-22 | 2016-06-29 | 周景振 | Magnetic resonance wireless charging transmission integration structure type resonance power supply |
| CN105186706A (en) * | 2015-08-12 | 2015-12-23 | 东北农业大学 | Automatic sweep-frequency wireless resonant power transmission device and operation method |
| CN105137173A (en) * | 2015-08-31 | 2015-12-09 | 盛世铸成科技（天津）有限公司 | Wireless charging frequency monitoring device |
| CN105914847A (en) * | 2015-08-31 | 2016-08-31 | 苏州东大金点物联科技有限公司 | Non-electric-contact public electric bicycle charging device |
| CN106374635B (en) * | 2016-10-12 | 2019-04-02 | 许继电源有限公司 | A kind of electric car mobile wireless charging transmitting transmission circuit |
| CN106374635A (en) * | 2016-10-12 | 2017-02-01 | 许继电源有限公司 | Mobile wireless charging emission transmission circuit of electric vehicle |
| CN106451820A (en) * | 2016-11-23 | 2017-02-22 | 成都信息工程大学 | Wireless power supply and distribution socket system |
| CN106891763A (en) * | 2017-02-27 | 2017-06-27 | 中国石油大学(华东) | Wireless charging system for electric automobile frequency tracking method |
| CN108574345A (en) * | 2017-03-10 | 2018-09-25 | 重庆邮电大学 | A kind of wireless power transmission equipment transmitting terminal self-adapting tuning device and tuning methods |
| CN106655845A (en) * | 2017-03-13 | 2017-05-10 | 中惠创智（深圳）无线供电技术有限公司 | Series resonant circuit and power supply |
| CN111279579A (en) * | 2017-11-03 | 2020-06-12 | 喜利得股份公司 | Resonant tank circuit for transmitting electrical energy |
| US11735955B2 (en) | 2017-11-03 | 2023-08-22 | Hilti Aktiengesellschaft | Resonant circuit for transmitting electric energy |
| CN108631449A (en) * | 2018-05-10 | 2018-10-09 | 常州星宇车灯股份有限公司 | A kind of radio energy transmission system of automobile tail light |
| CN108631449B (en) * | 2018-05-10 | 2024-03-22 | 常州星宇车灯股份有限公司 | Wireless power transmission system of automobile tail lamp |
| CN114830272A (en) * | 2020-04-16 | 2022-07-29 | 动量动力学公司 | Safety circuit for wireless power transfer |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20150103 |
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