CN109546715A - One kind passing energy charger for mobile phone based on magnet coupled resonant type wireless - Google Patents
One kind passing energy charger for mobile phone based on magnet coupled resonant type wireless Download PDFInfo
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- CN109546715A CN109546715A CN201811646486.0A CN201811646486A CN109546715A CN 109546715 A CN109546715 A CN 109546715A CN 201811646486 A CN201811646486 A CN 201811646486A CN 109546715 A CN109546715 A CN 109546715A
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- 238000005070 sampling Methods 0.000 claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 239000004065 semiconductor Substances 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 6
- 229910001006 Constantan Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- H02J7/025—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses one kind to pass energy charger for mobile phone based on magnet coupled resonant type wireless, including electric energy transmitting circuit and electric energy receive circuit, and the electric energy transmitting circuit is made of high-frequency inverter circuit, driving circuit, sampling feedback circuit, transmitting coil；The high-frequency inverter circuit uses full bridge inverter, which constitutes a H bridge by 4 MOSFET pipes, and the voltage that each switch mosfet pipe is born is the half of input voltage；Electric energy receives circuit and is made of receiving coil, full bridge rectifier, voltage regulator circuit, output protection circuit；The full bridge rectifier using can not control rectifying circuit, be barricaded as bridge circuit with 4 Schottky diodes, the voltage after rectification is charged the phone through LM2940 Voltage stabilizing module pressure stabilizing output.The two coil magnetic coupling harmonic technologies of utilization of base STM32 of the present invention realize the wireless charging of transmission of the energy in short distance, and oneself power consumption is small, and compatibility is high, has over-voltage over-current protection.
Description
Technical field
The invention belongs to phone charger technical fields, and in particular to one kind is passed based on magnet coupled resonant type wireless can mobile phone
Charger.
Background technique
Phone charger can substantially be divided into traveling charger, base charger and maintenance type charger, general user and connect
Mainly two kinds of the front of touching.And sell in the market at most is traveling charger.Also there are many more for the form of traveling charger
Sample, the miniature trip that common are cheap duck's egg type is filled, common desktop strap clamp type charger, the high-grade platform with liquid crystal display
Formula charger.
Mobile phone effect played in nowadays intelligent life increasingly can not be ignored, and the following mobile phone charging is asked
The problems such as topic also increasingly attracts people's attention, and how to charge more convenient, and how damage to mobile phone is smaller is urgently to be resolved.
In order to solve the problems, such as that mobile phone traditional wire charging modes bring wiring is many and diverse, socket rapid wear, incompatible, respective wireless charging
Device comes into being.
But existing phone charger, however it remains following problem: first is that the control circuit used is complicated, at high cost
And it is easily damaged；Second is that oneself power consumption is high, charge efficiency is low and lacks protection.
Summary of the invention
The purpose of the present invention present invention provides a radio energy-transmitting phone charger based on STM32, to solve use
Control circuit is complicated, at high cost and be easily damaged；But oneself power consumption is high, charge efficiency is low and lacks the problems such as protecting.Specifically
Direct current is completed by using full bridge inverter and becomes alternating current, and full bridge rectifier completes alternating current and straightens galvanic electricity, utilizes two
Coil magnetic coupling harmonic technology realize energy converted between electric energy-magnetic energy-electric energy, then by direct current through voltage regulation filtering to mobile phone
Power supply, and over-voltage over-current protection is equipped in mobile phone charging process, meanwhile, pass through high imitative mobile phone trial charging before mobile phone charging,
And reaching opposite equalized temperature, effective protection mobile phone charges in unstable temperature environment, improves battery of mobile phone and hand
The service life of machine.
To achieve the above object, present invention employs following technical solutions:
One kind passing energy charger for mobile phone based on magnet coupled resonant type wireless, including electric energy transmitting circuit and electric energy receive electricity
Road, the electric energy transmitting circuit are made of high-frequency inverter circuit, driving circuit, sampling feedback circuit, transmitting coil；The high frequency
Inverter circuit uses full bridge inverter, which constitutes a H bridge, each MOSFET by 4 MOSFET pipes
The voltage that switching tube is born is the half of input voltage, and adds a pull down resistor between the grid source electrode of MOSFET pipe, described
Electric energy transmitting circuit is arranged in cradle；The electric energy receive circuit by receiving coil, full bridge rectifier, voltage regulator circuit,
Output protection circuit composition；The design parameter of the receiving coil and the transmitting coil are consistent, the full-bridge rectification electricity
Road using can not control rectifying circuit, be barricaded as bridge circuit with 4 Schottky diodes, the voltage after rectification is through LM2940 pressure stabilizing mould
Block pressure stabilizing output charges the phone；One fuse of series connection at the output voltage of mobile phone, cuts off circuit when electric current is greater than 2A,
Real-time software supervision is realized using the ADC acquisition of STM32 simultaneously, is cut off immediately once there is the case where overvoltage, overcurrent
Circuit, the electric energy receives circuit and is provided with two groups, wherein one group is mounted in mobile phone, another group be mounted on it is hinged with cradle
Height imitate in mobile phone, be provided with reserve battery in the imitative mobile phone of height, frame, the frame be fixedly connected on the outside of the cradle
On refrigeration equipment is installed, the refrigeration equipment is set as semiconductor chilling plate, and the reserve battery of the high imitative interior of mobile phone is logical
Conducting wire is crossed to connect with semiconductor chilling plate.
Preferably, the STM32 is set as the main control chip of STM32F103RBT6 comprising have timer, ADC, DAC,
SPI, IIC and UART.
Preferably, there is setting voltage, and mutually isolated between grid source electrode between the grid source electrode of the switch mosfet pipe,
To guarantee that the voltage at each driving signal end will not interfere with each other.
Preferably, in 5 MOSFET pipes of emitting portion main circuit, since source level is not interrelated, the S1 of upper bridge arm,
S5 in S3 and charge control grade circuit is completely isolated.
Preferably, the source level of S2 and S4 is same level, and only with being isolated all the way, driving chip uses IR2104, IR2104
Chip is the input of PWM wave all the way, the output of two-way complementation PWM wave, and included dead zone between complementary PWM wave.
Preferably, sampling feedback is divided into electric current and voltage two parts, and current sample uses one section of constantan wire of low resistance, right
The both end voltage of constantan wire acquires current value as quotient with its resistance value；Since pressure difference is smaller, sampling electricity is amplified using INA282 chip
Pressure value, the value of magnification being subject to using its both end voltage of the ADC sampling acquirement of STM32.
Preferably, voltage sample is made in measuring circuit two concatenated big valued resistors in parallel using voltage divider principle
Voltage between two resistance is obtained directly to be conveyed to sample voltage value using OPA2333 chip as voltage follow less than 3.3V
STM32 single-chip microcontroller.
Preferably, due to the dimensional problem of the kelvin effect of coil and mobile phone, transmitting coil and receiving coil are respectively to adopt
The self-control coil that the overall diameter of the Litz wire coiling formed with multiply fine copper wire is 5cm.
Preferably, the concatenated capacitor in receiving end and transmitting terminal series resonance institute is C1=C2=0.40 μ F, magnetic coupling coefficient
It is 0.41,6.34 μ H of coil inductance, filter capacitor uses 220 μ F pressure voltages for the capacitor of 50V, so that prime switching tube drives
The frequency of signal is 100kHz, and the switching frequency of charge control grade circuit is also 100kHz, transmitting coil electric current and receiving coil
Current waveform is the sine waveform of standard, and two waveform phases differ 90 °, determine that series resonance has occurred in circuit.
Technical effect and advantage of the invention: one kind proposed by the present invention passes energy mobile phone based on magnet coupled resonant type wireless and fills
Electric appliance, compared with prior art, have it is following a little:
1, compared with traditional wire phone charger, the two coil magnetic coupling harmonic technology of utilization of base STM32 of the present invention is real
The wireless charging mode of existing transmission of the energy in set distance, the control circuit of use is reasonable, at low cost and be less likely to be damaged；
Oneself power consumption is small, and charge efficiency is high, and has the advantage of compatibility height, over-voltage over-current protection；
2, by the preferred of the coiling of drafting, coil to pcb board and component model, the present invention keeps oneself power consumption big
Width reduction, the larger promotion of charge efficiency make reception power that can be greater than the 85% of output power.The present invention is also applied to simultaneously
Mobile phone wireless charging, new-energy automobile charging station and the various electronic products wireless charging of the public places such as station, street corner；
3, by first being charged with the imitative mobile phone of height, and reach relative temperature equilibrium state, recycle mobile phone charging, prevent
Mobile phone charges in unstable temperature environment, improves the service life of mobile phone and battery of mobile phone.
Detailed description of the invention
Fig. 1 is radio energy-transmitting charging principle block diagram of the invention；
Fig. 2 is the main circuit diagram of electric energy transmitting circuit of the invention；
Fig. 3 is the main circuit diagram that electric energy of the invention receives circuit；
Fig. 4 is the current waveform figure of transmitting coil of the present invention and receiving coil；
Fig. 5 obtains experimental data chart by prototype experiment for the present invention；
Fig. 6 is the external structure schematic diagram of phone charger of the present invention.
In figure: 1 cradle, 2 frames, 3 semiconductor chilling plates, 4 conducting wires, 5 high imitative mobile phones.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
Magnet coupled resonant type wireless, which is based on, the present invention provides one kind as shown in figures 1 to 6 passes energy charger for mobile phone, including
Electric energy transmitting circuit and electric energy receive circuit, and the electric energy transmitting circuit is by high-frequency inverter circuit, driving circuit, sampling feedback electricity
Road, transmitting coil composition；The high-frequency inverter circuit uses full bridge inverter, which is managed by 4 MOSFET
A H bridge is constituted, the voltage that each switch mosfet pipe is born is the half of input voltage, and in the grid source electrode of MOSFET pipe
Between plus a pull down resistor, the electric energy transmitting circuit be arranged in cradle 1；；The electric energy receives circuit by reception line
Circle, full bridge rectifier, voltage regulator circuit, output protection circuit composition；The design parameter of the receiving coil and the emission lines
Circle is consistent, the full bridge rectifier using can not control rectifying circuit, be barricaded as bridge circuit with 4 Schottky diodes,
Voltage after rectification is charged the phone through LM2940 Voltage stabilizing module pressure stabilizing output；It connects one and insures at the output voltage of mobile phone
Silk cuts off circuit when electric current is greater than 2A, while realizing real-time software supervision using the ADC of STM32 acquisition, once occurred
The case where voltage, overcurrent, cuts off circuit immediately, and the electric energy receives circuit and is provided with two groups, wherein one group is mounted on mobile phone
In, another group is mounted on the imitative mobile phone 5 of the hinged height of cradle 1, is provided with reserve battery, the charging in the imitative mobile phone 5 of height
The outside of seat 1 is fixedly connected with frame 2, refrigeration equipment is equipped on the frame 2, the refrigeration equipment is set as semiconductor system
Cold 3, the high reserve battery imitated inside mobile phone 5 is electrically connected by conducting wire 4 and semiconductor chilling plate 3.
The STM32 is set as the main control chip of STM32F103RBT6 comprising has timer, ADC, DAC, SPI, IIC
And UART.There is setting voltage, and mutually isolated between grid source electrode between the grid source electrode of the switch mosfet pipe, it is each to guarantee
The voltage at driving signal end will not interfere with each other.In 5 MOSFET pipes of emitting portion main circuit, due to source level not cross-correlation
Join, the S5 in S1, S3 and charge control grade circuit of upper bridge arm is completely isolated.The source level of S2 and S4 is same level, only with one
Road isolation, driving chip use IR2104, and IR2104 chip is the input of PWM wave all the way, the output of two-way complementation PWM wave, and complementation
Dead zone is carried between PWM wave.Sampling feedback is divided into electric current and voltage two parts, and current sample uses a Duan Kangtong of low resistance
Silk, both end voltage and its resistance value to constantan wire acquire current value as quotient；Since pressure difference is smaller, adopted using the amplification of INA282 chip
Sample voltage value, the value of magnification being subject to using its both end voltage of the ADC sampling acquirement of STM32.For voltage sample, in measurement electricity
Parallel connection two concatenated big valued resistors in road make voltage between two resistance be less than 3.3V, utilize OPA2333 using voltage divider principle
Sample voltage value is directly conveyed to STM32 single-chip microcontroller as voltage follow by chip.Due to the kelvin effect and mobile phone of coil
Dimensional problem, transmitting coil and receiving coil are respectively the overall diameter for the Litz wire coiling for using multiply fine copper wire to form for 5cm
Self-control coil.The concatenated capacitor in receiving end and transmitting terminal series resonance institute is C1=C2=0.40 μ F, and magnetic coupling coefficient is
0.41,6.34 μ H of coil inductance, filter capacitor uses 220 μ F pressure voltages for the capacitor of 50V, so that prime switching tube driving letter
Number frequency be 100kHz, the switching frequency of charge control grade circuit is also 100kHz, transmitting coil electric current and receiving coil electricity
Stream waveform is the sine waveform of standard, and two waveform phases differ 90 °, determine that series resonance has occurred in circuit.
In actual use, the top of high imitative mobile phone 5 be also equipped with for control 3 on/off of semiconductor chilling plate by
Button；Before mobile phone charging, the imitative mobile phone 5 of height is placed on cradle 1 and is charged, by lower button, so that semiconductor chilling plate
Work, after 3-5 minutes, the heat and height that cradle 1 issues imitate the heat that mobile phone 5 issues and the heat that semiconductor chilling plate 3 is taken away
Amount reaches the state of stable equilibrium, and 1 upper area of cradle keeps a metastable temperature environment, then again by the imitative hand of height
Machine 5 takes out, and places mobile phone and charges.
Compared with traditional wire phone charger, compared with traditional wire phone charger, the utilization of base STM32 of the present invention
Two coil magnetic coupling harmonic technologies realize that the wireless charging mode of transmission of the energy in set distance, the control circuit of use are closed
It is reason, at low cost and be less likely to be damaged；Oneself power consumption is small, and charge efficiency is high, and has compatibility high, over-voltage over-current protection excellent
Gesture.
By the preferred of the coiling of drafting, coil to pcb board and component model, the present invention makes oneself power consumption substantially
It reduces, the larger promotion of charge efficiency, makes reception power that can be greater than the 85% of output power.The present invention is also applied to vehicle simultaneously
It stands, the charging of the mobile phone wireless of the public places such as street corner, new-energy automobile charging station and various electronic products wireless charging.This
Hair reaches relative temperature equilibrium state by first being charged with the imitative mobile phone 5 of height, recycles mobile phone charging, prevents mobile phone from existing
It charges in unstable temperature environment, improves the service life of mobile phone and battery of mobile phone.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (9)
1. one kind passes energy charger for mobile phone based on magnet coupled resonant type wireless, including electric energy transmitting circuit and electric energy receive circuit,
It is characterized by:
The electric energy transmitting circuit is made of high-frequency inverter circuit, driving circuit, sampling feedback circuit, transmitting coil；The height
Frequency inverter circuit uses full bridge inverter, which constitutes a H bridge by 4 MOSFET pipes, each
The voltage that switch mosfet pipe is born is the half of input voltage, and adds a drop-down electricity between the grid source electrode of MOSFET pipe
Resistance, the electric energy transmitting circuit are arranged in cradle (1)；
The electric energy receives circuit and is made of receiving coil, full bridge rectifier, voltage regulator circuit, output protection circuit；It is described to connect
The design parameter of take-up circle and the transmitting coil are consistent, the full bridge rectifier using can not control rectifying circuit, with 4
A Schottky diode is barricaded as bridge circuit, and the voltage after rectification is charged the phone through LM2940 Voltage stabilizing module pressure stabilizing output；
One fuse of series connection at the output voltage of mobile phone cuts off circuit when electric current is greater than 2A, while utilizing STM32's
Real-time software supervision is realized in ADC acquisition, once the case where overvoltage, overcurrent occur cuts off circuit immediately；
The electric energy receives circuit and is provided with two groups, wherein one group is mounted in mobile phone, another group is mounted on and cradle (1) hinge
The height connect is imitated in mobile phone (5), and height is provided with reserve battery in imitative mobile phone (5), is fixedly connected on the outside of the cradle (1) framed
Frame (2) is equipped with refrigeration equipment on the frame (2), and the refrigeration equipment is set as semiconductor chilling plate (3), the Gao Fang
The internal reserve battery of mobile phone (5) is connect by conducting wire (4) with semiconductor chilling plate (3).
2. according to claim 1 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: described
STM32 is set as the main control chip of STM32 F103RBT6 comprising has timer, ADC, DAC, SPI, IIC and UART.
3. according to claim 1 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: described
There is setting voltage, and mutually isolated between grid source electrode between the grid source electrode of switch mosfet pipe, avoids each driving signal end
Voltage interferes with each other.
4. according to claim 1 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: emitting
In 5 MOSFET pipes of part main circuit, the S5 in S1, S3 and charge control grade circuit of upper bridge arm is completely isolated, makes its source
Grade is unrelated.
5. according to claim 1 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: S2 and S4
Source level be same level, only with being isolated all the way, driving chip uses IR2104, and IR2104 chip is that PWM wave all the way inputs, two
The output of road complementation PWM wave, and dead zone is carried between complementary PWM wave.
6. according to claim 1 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: sampling is anti-
Feedback is divided into electric current and voltage two parts, and current sample uses one section of constantan wire of low resistance, to the both end voltage of constantan wire and its
Resistance value acquires current value as quotient；Since pressure difference is smaller, sample voltage value is amplified using INA282 chip, to utilize the ADC of STM32
Sampling obtains subject to the value of magnification of its both end voltage.
7. according to claim 6 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: for electricity
Pressure sampling is less than voltage between two resistance using voltage divider principle in measuring circuit two concatenated big valued resistors in parallel
Sample voltage value is directly conveyed to STM32 single-chip microcontroller using OPA2333 chip as voltage follow by 3.3V.
8. according to claim 1 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: emission lines
Circle and receiving coil are respectively the overall diameter for the Litz wire coiling for using multiply fine copper wire to form for the self-control coil of 5cm, with simultaneous
Care for the kelvin effect of coil and the size limitation of mobile phone.
9. according to claim 1 pass energy charger for mobile phone based on magnet coupled resonant type wireless, it is characterised in that: receiving end
It is C1=C2=0.40 μ F with transmitting terminal series resonance institute concatenated capacitor, magnetic coupling coefficient 0.41,6.34 μ H of coil inductance,
Filter capacitor uses 220 μ F pressure voltages for the capacitor of 50V, so that the frequency of prime switching tube driving signal is 100kHz, fills
The switching frequency of electric control grade circuit is also 100kHz, and transmitting coil electric current and receiving coil current waveform are the sine of standard
Wave waveform, and two waveform phases differ 90 °, make circuit that series resonance occur.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646486.0A CN109546715A (en) | 2018-12-29 | 2018-12-29 | One kind passing energy charger for mobile phone based on magnet coupled resonant type wireless |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646486.0A CN109546715A (en) | 2018-12-29 | 2018-12-29 | One kind passing energy charger for mobile phone based on magnet coupled resonant type wireless |
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| CN109546715A true CN109546715A (en) | 2019-03-29 |
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| CN201811646486.0A Pending CN109546715A (en) | 2018-12-29 | 2018-12-29 | One kind passing energy charger for mobile phone based on magnet coupled resonant type wireless |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114394004A (en) * | 2021-12-31 | 2022-04-26 | 南京信息工程大学 | A battery car sharing wireless charging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114394004A (en) * | 2021-12-31 | 2022-04-26 | 南京信息工程大学 | A battery car sharing wireless charging device |
| CN114394004B (en) * | 2021-12-31 | 2023-08-22 | 南京信息工程大学 | Wireless charging device is shared to storage battery car |
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