CN205004794U - Magnetic coupling wireless power transmission charging device - Google Patents

Magnetic coupling wireless power transmission charging device Download PDF

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Publication number
CN205004794U
CN205004794U CN201520754086.7U CN201520754086U CN205004794U CN 205004794 U CN205004794 U CN 205004794U CN 201520754086 U CN201520754086 U CN 201520754086U CN 205004794 U CN205004794 U CN 205004794U
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CN
China
Prior art keywords
circuit
module
charging
magnetic coupling
electric energy
Prior art date
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CN201520754086.7U
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Chinese (zh)
Inventor
邱小林
周亦人
吴允强
张明月
何柏青
白书华
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南昌理工学院
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Priority to CN201520754086.7U priority Critical patent/CN205004794U/en
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Publication of CN205004794U publication Critical patent/CN205004794U/en

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Abstract

The utility model provides a magnetic coupling wireless power transmission charging device, includes transmitting circuit and receiving circuit, the transmitting circuit includes switching of power module, oscillation circuit, power amplification circuit and transmitting coil, receiving circuit includes receiving coil, rectifier regulator module, control system module and LCD display module, the switching of power pair of module the oscillation circuit power supply, after receiving circuit charges and accomplishes, switching of power module disconnection power supply, oscillation circuit does power amplification circuit provides drive signal, power amplification circuit is influenced by drive signal, makes transmitting coil and receiving coil are in resonant condition, realize the maximize conveying and receipt of energy between transmitting circuit and receiving circuit.

Description

Magnetic coupling electric energy wireless transmission charging device
Technical field
The utility model relates to electric energy wireless charging device technical field, particularly a kind of magnetic coupling electric energy wireless transmission charging device.
Background technology
Along with electronics, electrically and the development of the control technology of automation, various household electrical appliances and electronic equipment have obtained extensively universal, but the traditional home appliance wired connection relied between power line and supply socket realizes power supply, and adopt the electronic equipment of internal battery to need the wired connection between power line and supply socket too to realize charging, the electric wire provided for these electronic equipments is seen everywhere.These electric wires do not occupy our activity space, more limit the convenience of equipment use, also produce the hidden danger of associated safety electricity consumption simultaneously.
Wireless power transmission utilizes a kind of special equipment to be can the energy of radio transmission by the converting electric energy of power supply, being wired back by this energy conversion again at receiving terminal can, thus the wireless power reached electrical appliance, this transmission means can solve many inconvenience even drawback that wire transmission mode brings, such as: can utilize space in beautifying urban environment, expansion chamber, reduce to produce fire by friction the potential hazard etc. of even exploding.Therefore, people constantly increase the portable set of wireless use truly and the demand of green energy resource system, become a pursuit of the mankind as a kind of more flexible transmission means wireless power transmission, what scientists both domestic and external was persistent for many years has carried out a lot of exploratory development work to this.
At present, the wirelessly transmitting electrical energy technology with better application prospect is the wireless charging system realized based on magnetic coupling harmonic technology.The form wireless transmission of electric energy by magnetic Field Coupling gone out, this unit needs to produce resonance with different frequencies, in order to improve the stability of charging system, must ensure the reliability of accessory power supply.But the near field magnetic field wireless charging of this wireless charging technical requirement charging device within the scope of 2.45cm, this bottleneck does not still have substantial breakthrough, if but not to be strict with within the scope of several cm to transmission range, its efficiency of transmission is just easy to bring up to satisfied degree.
Utility model content
Based on this, be necessary to provide a kind of magnetic coupling electric energy wireless transmission charging device realizing electrical source exchange, adjustable distance.
A kind of magnetic coupling electric energy wireless transmission charging device, comprise radiating circuit and receiving circuit, described radiating circuit comprises electrical source exchange module, oscillating circuit, power amplification circuit and transmitting coil, and described receiving circuit comprises receiving coil, rectifying and voltage-stabilizing module, control system module and LCD display module; Described electrical source exchange module is powered to described oscillating circuit, after described receiving circuit charging complete, electrical source exchange module disconnects power supply, described oscillating circuit provides pumping signal for described power amplification circuit, described power amplification circuit excited target effect of signals, make described transmitting coil and receiving coil be in resonance condition, the maximization realizing energy between described radiating circuit and receiving circuit transmits and receives.
Electrical source exchange module adopts hilted broadsword double-gate relay, exchanges the normal opening and closing that powers on and closes, and normally closedly realizes Alternating Current Power Supply when opening, normally closed closed time, described AC dump.
Described radiating circuit adopts NE555 formation frequency of oscillation to be about 510KHZ signal generator, for power amplifier provides pumping signal, described tuned power amplifier is made up of LC shunt-resonant circuit and switching tube IRF840, to be that the enamelled wire of 0.80mm is close by diameter form around 20 circles oscillator coil, diameter is about 6.5cm, and actual measurement inductance value is about 142UH.
Described radiating circuit further comprises checkout gear, control module and switch module.Described electrical source exchange module, described switch module and described oscillating circuit are connected in series, described checkout gear is for the electric current that detects on oscillating circuit and the current value detected is transferred to control module, and described control module controls the open and close of described switch module.
Described control circuit module is MSP430 control system.The electric current of inductance induction receiving terminal, input described MSP430 control system again after induced current being inputed to described rectification seamless module rectifying and voltage-stabilizing, described MSP430 control system is according to the change of current value before and after capacitance adjustment.
The resonant tank coil of described radiating circuit is under high-frequency pulse signal drives, continuous emitting electromagnetic wave towards periphery, non-radiative alternating magnetic field is formed in near-field region, through strong magnetic coupling resonance, carried out electric energy reception by the resonant tank coil of described receiving circuit, thus realize the wireless transmission of electric energy high efficiency, middle distance.
During system works, electric main is transformed into direct current through full bridge rectifier by radiating circuit input, or be directly system power supply with 24V direct current, the direct current exported after wireless charging device electrical source exchange module converts high-frequency alternating current supply armature winding to by oscillating circuit vibration inversion, by 2 magnetic induction loop coupling energies, it is battery charging that the electric current exported is transformed into direct current through reception change-over circuit, finally by MSP430 control system, carry out the charge condition of real-time monitoring circuit, again by the drafting of LCD display module display charging progress bar, real time charging voltage shows, charging interval display etc.
Accompanying drawing explanation
Fig. 1 is the utility model magnetic coupling electric energy wireless transmission charging device system block diagram.
Fig. 2 is the emission circuit system block diagram of the utility model embodiment.
Fig. 3 is the power circuit diagram of the utility model magnetic coupling electric energy wireless transmission charging device.
Fig. 4 is the radiating circuit figure of the utility model magnetic coupling electric energy wireless transmission charging device.
Fig. 5 is the reception charging circuit figure of the utility model magnetic coupling electric energy wireless transmission charging device.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.First-selected embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, the object of these embodiments is provided to be make to disclosure of the present utility model more thoroughly comprehensively.
It should be noted that, when element is called as " being fixedly arranged on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in specification of the present utility model herein just in order to describe specific embodiment, is not intended to be restriction the utility model.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Refer to Fig. 1, for a kind of magnetic coupling electric energy wireless transmission of the utility model charging device, comprise radiating circuit 10 and receiving circuit 13, wherein, described radiating circuit 10 comprises electrical source exchange module 101, oscillating circuit 104, power amplification circuit 102 and transmitting coil 103, and described receiving circuit 13 comprises rectifying and voltage-stabilizing module 131, control circuit module 132, LCD charging display module 133 and receiving coil 134.
Described electrical source exchange module 101 is powered to described oscillating circuit 104, after the charging complete of described receiving circuit 13, disconnect power supply, described oscillating circuit 104 vibrates under the frequency of self, and is transferred out in the form of an electromagnetic wave by energy by described transmitting coil 103.
Described rectifying and voltage-stabilizing module 131, control circuit module 132 and LCD charging display module 133 is connected.Described rectifying and voltage-stabilizing module 131 makes reception charging circuit charge through constant current value and magnitude of voltage for the current/voltage value received by described receiving coil 134 by the interlock conciliation of shunt capacitance.
Wherein, this electrical source exchange module 101 is alternating current-direct current input employing hilted broadsword double-gate relay, for realizing the conversion of charge power supply alterating and direct current.
Refer to Fig. 2, an example structure figure of a kind of magnetic coupling electric energy wireless transmission of the utility model charging device radiating circuit, comprises checkout gear 113, control module 111 and switch module 112.Described electrical source exchange module 101, described switch module 112 are connected in series with described oscillating circuit 104, described checkout gear 113 is for the electric current that detects on oscillating circuit 104 and the current value detected is transferred to control module 111, and described control module 111 controls the open and close of described switch module 112.
After described switch module 112 is closed, electrical source exchange module 101 is powered to described oscillating circuit 104, when described checkout gear 113 detects current value higher than maximum, described control module 111 controls described switch module 112 and disconnects, and makes described oscillating circuit 104 start self-oscillation and outside transmitting energy; When described checkout gear 113 detects current value lower than minimum value, described control module 111 control switch module 112 closes.
Refer to Fig. 3, described power supply switch circuit 101, the full bridge rectifier that electric main forms through D1, D2, D3 and D4 is transformed into direct current by input, or be directly system power supply with DC24V direct current, be connected to a circuit of three-terminal voltage-stabilizing integrated LM7805 in circuit, make electrical source exchange module provide stable positive 5V voltage to described radiating circuit.The DC power supply of this power acquisition 24V, when 1 contact 3, the electric main of this power acquisition 220V, it is preferential that this electrical source exchange module 101 directly switches 220V civil power by change-over circuit, and when electrical source exchange, the time is very short, electric capacity C1 is in parallel with DC circuit breaker VG and power transformer T1, electric capacity C1 can provide the electricity of certain hour, realizes continuous TURP and changes, thus do not affect charging.
Further, described power amplifier is made up of LC shunt-resonant circuit and switching tube IRF840.
Understandable, described electrical source exchange module 101 is not when inserting plug, and relay resets, and is powered by direct current DC24V, and when connecting plug, relay adhesive, is powered by AC mains, and now DC24V disconnects.
Refer to Fig. 4, adopt NE555 to form frequency of oscillation in described radiating circuit 10 and be about the signal generator of 510KHZ, wherein 8 pin of NE555 all with resistance and Capacitance parallel connection, for power amplifier provides pumping signal.Fixed capacity C9 (its value is 470pF) the place tunable capacitor C7 (its value is 200pF) in parallel that inductance L 1 is in parallel with it, for the resonance frequency in regulating circuit.Wherein, inductance L 1 and tunable capacitor C7 form the transmitting terminal resonance coil loop of described radiating circuit 10, and under high-frequency pulse signal drives, constantly spatial emission electromagnetic wave towards periphery, forms non-radiative alternating magnetic field in near-field region.
In one embodiment, described transmitting coil 103 is made up of the tight wound core of enamelled wire.
In one embodiment, the tuned power amplifier in described radiating circuit 10 is made up of LC shunt-resonant circuit and switching tube IRF840.To be that the enamelled wire of 0.80mm is close by diameter form around 20 circles oscillator coil, and its diameter is about 6.5cm, and actual measurement inductance value is about 142UH.
Refer to Fig. 1 and Fig. 5, described control circuit module 132 is MSP430 control system.Inductance L 2 responds to the electric current of receiving terminal, and induced current is inputed to described rectification seamless module 131, input described MSP430 control system 132 after rectifying and voltage-stabilizing again, described MSP430 control system 132 must change according to current value before and after capacitance adjustment.
In one embodiment, charging device in use, ensures do not have other metals or magnetizing mediums near inductance L 1 and L2, when receiving element no-load condition, keeps L1 and L2 coaxial, changes the spacing of L1 and L2, measure the voltage at receiving element C5 two ends.During coaxial the and constant spacing 2cm of L1 and L2, connect pond to be charged, and connect voltmeter, when receiving 1 by 2 of S1, the variable resistor R5 being 5K with maximum value connects, and is trickle charge charging working method, when receiving 3 by 2 of S1, the variable resistor R6 being 500K with maximum value connects, and is charging working method soon.
In described receiving circuit 13, inductance L 2 is the equivalent inductance of inductance L 1 in described radiating circuit 10, fixed capacity C10 (its value is 470pF) the place tunable capacitor C8 (its value is 200pF) in parallel that inductance L 2 is in parallel with it, for regulating the resonance frequency in described receiving circuit 13.Wherein, inductance L 2 and tunable capacitor C8 form the receiving terminal resonance coil loop of described receiving circuit 13, described receiving terminal resonance coil loop receives the electric energy that described transmitting terminal resonance coil loop produces under strong magnetic coupling resonance effect, thus realizes the wireless transmission of electric energy high efficiency, middle distance.
When system carries out work, electric main is transformed into direct current through full bridge rectifier by radiating circuit input, or be directly system power supply with 24V direct current, the direct current exported after wireless charging device electrical source exchange module converts high-frequency alternating current supply armature winding to by oscillating circuit vibration inversion, by 2 coupling coils, realize the conversion of electric energy-magnetic energy-electric energy, the rectifying and voltage-stabilizing module variations of electric current in receiving circuit exported becomes direct current to be battery charging, finally by MSP430 control system, carry out the charge condition of real-time monitoring circuit, again by the drafting of LCD display module display charging progress bar, real time charging voltage shows, charging interval display etc.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (8)

1. a magnetic coupling electric energy wireless transmission charging device, comprise radiating circuit and receiving circuit, it is characterized in that, described radiating circuit comprises electrical source exchange module, oscillating circuit, power amplification circuit and transmitting coil, and described receiving circuit comprises receiving coil, rectifying and voltage-stabilizing module, control system module and LCD display module; Described electrical source exchange module is powered to described oscillating circuit, after described receiving circuit charging complete, electrical source exchange module disconnects power supply, described oscillating circuit provides pumping signal for described power amplification circuit, described power amplification circuit excited target effect of signals, make described transmitting coil and receiving coil be in resonance condition, the maximization realizing energy between described radiating circuit and receiving circuit transmits and receives.
2. magnetic coupling electric energy wireless transmission charging device according to claim 1, is characterized in that, described electrical source exchange module adopts hilted broadsword double-gate relay to carry out alterating and direct current to switch power supply.
3. magnetic coupling electric energy wireless transmission charging device according to claim 1, it is characterized in that, described radiating circuit comprises checkout gear, control module and switch module further, described electrical source exchange module, described switch module and described oscillating circuit are connected in series, described checkout gear is for the electric current that detects on oscillating circuit and the current value detected is transferred to control module, and described control module controls the open and close of described switch module.
4. magnetic coupling electric energy wireless transmission charging device according to claim 1, is characterized in that, described power amplifier is made up of LC shunt-resonant circuit and switching tube IRF840.
5. magnetic coupling electric energy wireless transmission charging device according to claim 1, is characterized in that, described transmitting coil is made up of the tight wound core of enamelled wire.
6. magnetic coupling electric energy wireless transmission charging device according to claim 1, it is characterized in that, described receiving circuit receives the electric current of radiating circuit, induced current is exported to described rectifying and voltage-stabilizing module, described control circuit module is inputed to, the change of current value before and after described control circuit module regulates after rectifying and voltage-stabilizing.
7. magnetic coupling electric energy wireless transmission charging device according to claim 1, is characterized in that, described control circuit module is MSP430 control system.
8. magnetic coupling electric energy wireless transmission charging device according to claim 1, is characterized in that, described LCD display module, for showing charged state, shows charging voltage and charging interval in real time.
CN201520754086.7U 2015-09-25 2015-09-25 Magnetic coupling wireless power transmission charging device CN205004794U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106003026A (en) * 2016-06-06 2016-10-12 上海禹昌信息科技有限公司 Robot wireless joint system
CN106230130A (en) * 2016-09-21 2016-12-14 西安培华学院 A kind of water spray control device based on wireless power transmission
CN106230131A (en) * 2016-09-21 2016-12-14 珠海格力电器股份有限公司 A kind of wireless power controls device and control method
CN106253496A (en) * 2016-08-17 2016-12-21 桐城信邦电子有限公司 A kind of radio energy transmission system of novel small-power electronic product
CN107634586A (en) * 2016-07-15 2018-01-26 通用汽车环球科技运作有限责任公司 Double sensings/conduct direct current coupled recharging systems
CN108528253A (en) * 2018-04-27 2018-09-14 上海应用技术大学 A kind of automobile wireless charging unit based on magnetic coupling harmonic technology

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106003026A (en) * 2016-06-06 2016-10-12 上海禹昌信息科技有限公司 Robot wireless joint system
CN107634586A (en) * 2016-07-15 2018-01-26 通用汽车环球科技运作有限责任公司 Double sensings/conduct direct current coupled recharging systems
CN106253496A (en) * 2016-08-17 2016-12-21 桐城信邦电子有限公司 A kind of radio energy transmission system of novel small-power electronic product
CN106230130A (en) * 2016-09-21 2016-12-14 西安培华学院 A kind of water spray control device based on wireless power transmission
CN106230131A (en) * 2016-09-21 2016-12-14 珠海格力电器股份有限公司 A kind of wireless power controls device and control method
CN108528253A (en) * 2018-04-27 2018-09-14 上海应用技术大学 A kind of automobile wireless charging unit based on magnetic coupling harmonic technology

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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: 20160127

Termination date: 20170925