CN103248092A - Adjustable wireless charging coil and application method thereof - Google Patents
Adjustable wireless charging coil and application method thereof Download PDFInfo
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- CN103248092A CN103248092A CN2013101583258A CN201310158325A CN103248092A CN 103248092 A CN103248092 A CN 103248092A CN 2013101583258 A CN2013101583258 A CN 2013101583258A CN 201310158325 A CN201310158325 A CN 201310158325A CN 103248092 A CN103248092 A CN 103248092A
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Abstract
The invention provides an adjustable wireless charging coil which comprises a clockwork coil, a coil baseplate, a reminding device and a controller, wherein the clockwork coil is manufactured into a helical clockwork shape by adopting conductive material; a stepping motor is mounted at the lower end of the coil baseplate, and is driven by and connected with a motor driving wire of the controller; an output shaft of the stepping motor is connected with a worm through a shaft coupling device; the worm is meshed with a worm wheel; a shaft lever of the worm wheel penetrates through the coil baseplate and is connected with the inner coils of the clockwork coil mounted on the coil baseplate through a cap, the inner coils of the clockwork coil are connected simultaneously; the outer end of the clockwork coil penetrates through the coil baseplate and is connected with a power line of coil connecting lines; the controller is mounted on the coil baseplate; and the reminding device is connected onto the controller. Through the adoption of the structure of the adjustable wireless charging coil, the adjustment is convenient and fast, and the precision of the adjusting range is high.
Description
Technical field
The present invention relates to the wireless charging technical field, refer in particular to a kind of adjustable wireless charging coil and using method thereof.
Background technology
Technology towards wireless charging mainly roughly has following four kinds of modes: way of electromagnetic induction, wave mode, magnetic resonance mode and field coupled mode.Wherein magnetic resonance mode is verified in 2007 by the physicist Malin of Massachusetts Institute Technology (MIT) Sol Jia Xike (Marin Soljacic), has been subjected to extensive concern since then.This technology has been utilized the principle of resonance, and this shows as two identical objects of vibration frequency can the high efficiency of transmission energy.Utilize magnetic resonance method can the air between charger and equipment in transmission charge, coil and capacitor then form resonance between charger and equipment, realize the technology of electric energy high efficiency of transmission.When the vibration frequency of two objects was identical, the intensity that their transmit energy can not be subjected to the influence of surrounding.Electric weight only transmits between the coil with same frequency resonance, and this technology allows equipment can reach several meters far away place farthest at the distance adapter to carry out wireless charging.Distance, the efficient of electromagentic resonance charging can both satisfy most of needs that use.U.S. WiTricity is that 3.3kW, transmission range are to make overall efficiency reach 90% under the situation of 20cm in power output.Though magnetic resonance method is good in theory, but has still run into a lot of troubles in actual design.The resonance frequency that sends coil and receiving coil must be consistent, if the resonance frequency of two coils is variant, the whole wireless transmission efficient of system has significantly and reduces.But owing to reasons such as manufacturing process, system designs to launch and is designed to consistent very difficult with the receiving coil resonance frequency in volume production, product qualified rate is difficult to control, and circuit itself, parasitic capacitance and exterior object etc., the capital has influence on the change of resonance frequency of coil, thereby cause charge efficiency to reduce, cause waste of electric energy.
In coil design, adjust the mode of coil resonates frequency, can also in circuit, add the method for inductance or electric capacity or add the resonance frequency that methods such as ferrite, sheet metal change coil in the coil outside, but above-mentioned this several method may cause very big influence to the quality factor of coil, and in actual design and in using and be not easy to finish, so generally be not used.When power output is regulated in the wireless charging process at present, at present generally be the control that reaches power output by the output frequency of regulating output voltage or adjusting power supply, and also there is problems such as being difficult to realization, sluggish in the output frequency of regulation voltage or adjusting power supply.
Present wireless charging coil design resonance frequency at the beginning is just fixing, but because the error of manufacturing and design etc., often two coils can not reach the optimum resonance point simultaneously, and the resonance frequency of regulating winding is regulated and is had a lot of difficult problems at present between charge period.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of simple in structure, efficient that can effectively improve wireless charging is provided, and wireless charging coil design and the using method thereof that can conveniently regulate the output of wireless charging power.
For achieving the above object, technical scheme provided by the present invention is: a kind of adjustable wireless charging coil, it includes stepping motor, worm gear, worm screw, clockwork spring coil, coil floor, motor-driven line, alarm set, controller, coil connecting line, wherein, the clockwork spring coil adopts electric conducting material to make spiral clockwork spring shape; Stepping motor is installed in the coil floor lower end, stepping motor connects driving by the motor-driven line of controller, the output shaft of stepping motor connects with worm screw by shaft coupling, the worm and wheel engagement, the axostylus axostyle of worm gear pass coil floor by the block be installed in coil floor on clockwork spring coil inner ring connect, the coil inner ring connects simultaneously, clockwork spring coil outer end is passed in coil floor and the coil connecting line wherein, and a power line connects, controller is installed on the coil floor, and alarm set is connected on the controller.
The using method of said apparatus is: drive worm gear, worm-drive by drive motors, thereby cause the rotation of clockwork spring coil, the clockwork spring coil shape changes, make the resonance frequency of coil change in certain limit, when being adjusted to transmitting terminal coil resonance frequency and reaching consistent with receiving terminal coil resonance frequency, transmitting terminal is pointed out by LED, charactron or sound; When needs are regulated power output, also can come accomplished by the resonance frequency that changes coil.
Described block links to each other with clockwork spring coil inner ring by the adhesion mode.
Described clockwork spring coil outer ring is fixed by the steady pin on the base plate, and is connected with wherein power line of coil connecting line.
Described worm gear, worm-drive all have auto-lock function.
Described clockwork spring coil section is made of spiral-shaped strip, filled circles, open circles, flat lead, and the umber of turn of spiral part is the 4-50 circle, and internal diameter is 1-100mm, and external diameter is 50-1000mm.
The present invention realizes the variation of coil natural resonance frequency by the control motor, make reception consistent with transmission coil resonance frequency, when resonance frequency reached unanimity, system was pointed out by LED, charactron or sound etc., thereby wireless transmission efficient is significantly improved.Can avoid because the resonance frequency difference problem that the equipment of production technology problem, external disturbance or different manufacturers etc. cause by the resonance frequency of regulating winding, feasible wireless charging efficient reduction problem obtains a good solution.And this structure is easy to adjust, quick, adjustable range precision height.
Description of drawings
Fig. 1 is structural representation of the present invention.
Adjusting flow chart when Fig. 2 is positioned at the wireless charging receiving terminal for the present invention.
Adjusting flow chart when Fig. 3 is positioned at the wireless charging transmitting terminal for the present invention.
Embodiment
The invention will be further described below in conjunction with institute's drawings attached, and preferred embodiment of the present invention is:
When 1 device of embodiment is positioned at the wireless charging receiving terminal:
Referring to accompanying drawing 1 and accompanying drawing 2, the described wireless charging coil device of present embodiment comprises that it includes stepping motor 1, worm gear 2, worm screw 3, clockwork spring coil 4, coil floor 5, motor-driven line 6, alarm set 7, controller 8, coil connecting line 9, wherein, stepping motor 1 can adopt direct current machine or other motor to substitute, this example example is selected stepping motor, comes the pilot angle displacement by the control impuls number, thereby reaches the purpose of accurate location rotational angle.Stepping motor 1 is installed in coil floor 5 lower ends, and coil floor 5 can be made shapes such as square, circle according to actual needs, and its manufactured materials comprises shielding materials such as high frequency ferrite, aluminium sheet etc.Coil floor 5 mainly plays isolates and shielding action, avoids coil and the mutual interference mutually of base plate miscellaneous equipment, perhaps external environment condition is impacted.And the output shaft of stepping motor 1 is connected with worm screw by shaft coupling, worm-drive is equivalent to worm drive, be multiple tooth engaged transmission, stable drive, noise are very little, and transmission has self-locking performance, its reverse self-locking performance can rise avoids the clockwork spring coil owing to tension force causes backward rotation, even causes the counter-rotating of motor.Clockwork spring coil 4 can be formed spiral-shaped by strip, filled circles, open circles, flat, braid over braid etc., and the number of turn of the winding of spiral part as required can be from the 4-50 circle, internal diameter can be as required from more than the 1-100mm, and internal diameter can be as required from more than the 50-1000mm.The inner ring of clockwork spring coil 4 is connected respectively by coil connecting line with the outer end, outer ring, and wherein the coil outer end is fixed by the base plate steady pin, is connected by the ferrite block between the axostylus axostyle of clockwork spring coil 4 inner rings and worm gear 2.Block can adopt nonmetallic materials such as plastics, high frequency ferrite to make.Controller 8 mainly comprises driving, wireless communication module of rectification circuit and voltage stabilizing circuit, motor etc.Rectification circuit and voltage stabilizing circuit carry out rectification and voltage stabilizing etc. to the electric current that receiving coil receives, the rotation of motor-driven major control motor, and the receiving terminal wireless communication module is responsible for the radio communication of transmitting terminal.
It regulates flow process:
One, beginning wireless charging, electric current and the voltage of the reception electric weight that the receiving terminal controller test is current;
Two, receiving terminal controller drive motors regulating winding;
Three, the receiving terminal controller will be regulated the situation wireless feedback and give the transmitting terminal controller, and transmitting terminal controller acousto-optic hint on display panel is regulated situation;
Four, the receiving terminal controller relatively receives electric current and the voltage of electric weight, and the corresponding adjusting angle of record, reach maximum power or power demand?
Five, when reaching maximum power or power demand, the receiving terminal controller stops regulating winding;
Six, the receiving terminal controller feeds back to the transmitting terminal controller with the adjusting signal wireless that finishes, and transmitting terminal controller acousto-optic hint on display panel is regulated and finished;
Seven, wireless charging continues.
When 2 devices of embodiment are positioned at the wireless charging transmitting terminal:
Referring to accompanying drawing 1 and accompanying drawing 3, present embodiment 2 with embodiment 1 difference is: controller 8 mainly comprises the driver circuit of driving, wireless communication module and display floater of high frequency electric source output module, the motor of coil, and controller can be placed under the base plate for fear of disturbing.High frequency electric source output module output high frequency alternating current passes through outer ring and the inner ring of coil connecting line connecting coil 4 respectively; The rotation of motor-driven major control motor; The rotation of motor drives the rotation of turbine, worm screw and causes the variation of loop construction; The transmitting terminal wireless communication module is responsible for and the wireless module of receiving terminal carries out communicating wireless signals; The driver circuit of display floater is mainly for the drive circuit of LED, charactron and the buzzer etc. of display floater.Display floater is connected with controller by winding displacement, mainly for the state of pointing out the user radio charging by the acousto-optic mode, comprise present wireless module signal intelligence, charging whether normally, whether reach prompting situation such as optimal charge efficient.
The adjusting flow process of present embodiment is:
One, beginning wireless charging, transmitting terminal controller drive motors regulating winding;
Two, electric current and the voltage of the current reception electric weight of receiving terminal controller test;
Three, the electric current of the reception electric weight that will test of receiving terminal controller and voltage are given the transmitting terminal controller by wireless feedback;
Four, the transmitting terminal controller relatively receives electric current and the voltage of electric weight, and the corresponding adjusting angle of record, more whether reaches maximum power or power demand;
If five transmitting terminal controllers output alternating source frequency can be regulated, can reach the delivery efficiency of more increasing by regulating supply frequency, transmitting terminal controller output alternating source frequency is regulated;
Six, electric current and the voltage of the current reception electric weight of receiving terminal controller test;
Seven, the electric current of the reception electric weight that will test of receiving terminal controller and voltage are given the transmitting terminal controller by wireless feedback;
Eight, the transmitting terminal controller relatively receives electric current and the voltage of electric weight, and the corresponding adjusting angle of record, more whether reaches maximum power or power demand;
If nine reach maximum power or power demand, the transmitting terminal controller feeds back to the receiving terminal controller with the adjusting signal wireless that finishes, and transmitting terminal controller acousto-optic hint on display panel is regulated and finished; And continue to charge.
Claims (6)
1. adjustable wireless charging coil, it is characterized in that: it includes stepping motor (1), worm gear (2), worm screw (3), clockwork spring coil (4), coil floor (5), motor-driven line (6), alarm set (7), controller (8), coil connecting line (9), wherein, clockwork spring coil (4) adopts electric conducting material to make spiral clockwork spring shape; Stepping motor (1) is installed in coil floor (5) lower end, stepping motor connects driving by the motor-driven line (6) of controller (8), the output shaft of stepping motor (1) connects with worm screw (3) by shaft coupling, worm screw (3) and worm gear (2) engagement, the axostylus axostyle of worm gear (2) pass coil floor (5) by the block be installed in coil floor (5) on clockwork spring coil (4) inner ring connect, coil (4) inner ring connects simultaneously, clockwork spring coil (4) outer end is passed in coil floor (5) and the coil connecting line (9) wherein, and a power line connects, controller (8) is installed on the coil floor (5), and alarm set (7) is connected on the controller (8).
2. the using method of an adjustable wireless charging coil, it is characterized in that: drive worm gear, worm-drive by drive motors, thereby cause the rotation of clockwork spring coil, the clockwork spring coil shape changes, make the resonance frequency of coil change in certain limit, when being adjusted to transmitting terminal coil resonance frequency and reaching consistent with receiving terminal coil resonance frequency, transmitting terminal is pointed out by LED, charactron or sound; When needs are regulated power output, also can come accomplished by the resonance frequency that changes coil.
3. a kind of adjustable wireless charging coil according to claim 1, it is characterized in that: described block links to each other with clockwork spring coil inner ring (4) by the adhesion mode.
4. a kind of adjustable wireless charging coil according to claim 1, it is characterized in that: described clockwork spring coil (4) outer ring is fixed by the steady pin on the base plate, and is connected with wherein power line of coil connecting line (9).
5. a kind of adjustable wireless charging coil according to claim 1, it is characterized in that: described worm gear (2), worm screw (3) transmission all have auto-lock function.
6. a kind of adjustable wireless charging coil according to claim 1, it is characterized in that: described clockwork spring coil (4) cross section is formed spiral-shaped by strip, filled circles, open circles, flat lead, and the umber of turn of spiral part is the 4-50 circle, internal diameter is 1-100mm, and external diameter is 50-1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310158325.8A CN103248092B (en) | 2013-05-02 | 2013-05-02 | Adjustable wireless charging coil and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310158325.8A CN103248092B (en) | 2013-05-02 | 2013-05-02 | Adjustable wireless charging coil and application method thereof |
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| CN103248092A true CN103248092A (en) | 2013-08-14 |
| CN103248092B CN103248092B (en) | 2015-06-10 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730925A (en) * | 2013-12-17 | 2014-04-16 | 昆山欣海韵贸易有限公司 | Wireless charger with adjustable coil number |
| CN104752046A (en) * | 2015-04-21 | 2015-07-01 | 湖州东尼电子有限公司 | Receiving coil for wireless charger |
| CN106130196A (en) * | 2016-08-23 | 2016-11-16 | 李志忠 | Wireless charging method, Apparatus and system |
| CN106464023A (en) * | 2014-08-20 | 2017-02-22 | 墨尚电子技术(上海)有限公司 | Thin high-efficiency wireless charging coil and wireless charging system thereof |
| CN106785459A (en) * | 2016-12-15 | 2017-05-31 | 云南科威液态金属谷研发有限公司 | A kind of coil for wireless charging device antenna |
| CN109193976A (en) * | 2018-09-18 | 2019-01-11 | 国网江苏省电力有限公司盐城供电分公司 | A kind of wireless charging system and its charging method |
| CN109494887A (en) * | 2018-11-30 | 2019-03-19 | 西安工业大学 | A kind of electromechanical induction coil structure for wireless charging device |
| CN109861403A (en) * | 2019-04-03 | 2019-06-07 | 杭州如墨科技有限公司 | A kind of adjustable frequency wireless charging transmitting terminal mould group |
| CN112655058A (en) * | 2018-09-12 | 2021-04-13 | 宁波吉利汽车研究开发有限公司 | Apparatus for wireless power transmission system |
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| CN201440360U (en) * | 2008-10-13 | 2010-04-21 | 陈晓东 | Reactor for accurate tuning used for passive filter |
| US20100264748A1 (en) * | 2009-06-21 | 2010-10-21 | Christopher Allen Tucker | System of Transmission of Wireless Energy |
| CN102315692A (en) * | 2010-06-29 | 2012-01-11 | 富达通科技股份有限公司 | Power supply transmission method of high-power wireless induction type power supplier |
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Patent Citations (3)
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| CN201440360U (en) * | 2008-10-13 | 2010-04-21 | 陈晓东 | Reactor for accurate tuning used for passive filter |
| US20100264748A1 (en) * | 2009-06-21 | 2010-10-21 | Christopher Allen Tucker | System of Transmission of Wireless Energy |
| CN102315692A (en) * | 2010-06-29 | 2012-01-11 | 富达通科技股份有限公司 | Power supply transmission method of high-power wireless induction type power supplier |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730925B (en) * | 2013-12-17 | 2016-02-03 | 昆山欣海韵贸易有限公司 | A kind of adjustable wireless charger of the number of turns of coil |
| CN103730925A (en) * | 2013-12-17 | 2014-04-16 | 昆山欣海韵贸易有限公司 | Wireless charger with adjustable coil number |
| CN106464023B (en) * | 2014-08-20 | 2019-01-08 | 墨尚电子技术(上海)有限公司 | Slim Wireless charging coil and its wireless charging system |
| CN106464023A (en) * | 2014-08-20 | 2017-02-22 | 墨尚电子技术(上海)有限公司 | Thin high-efficiency wireless charging coil and wireless charging system thereof |
| CN104752046A (en) * | 2015-04-21 | 2015-07-01 | 湖州东尼电子有限公司 | Receiving coil for wireless charger |
| CN106130196A (en) * | 2016-08-23 | 2016-11-16 | 李志忠 | Wireless charging method, Apparatus and system |
| CN106130196B (en) * | 2016-08-23 | 2019-04-26 | 李志忠 | Wireless charging method, apparatus and system |
| CN106785459A (en) * | 2016-12-15 | 2017-05-31 | 云南科威液态金属谷研发有限公司 | A kind of coil for wireless charging device antenna |
| CN112655058A (en) * | 2018-09-12 | 2021-04-13 | 宁波吉利汽车研究开发有限公司 | Apparatus for wireless power transmission system |
| CN112655058B (en) * | 2018-09-12 | 2024-03-26 | 宁波吉利汽车研究开发有限公司 | Apparatus for wireless power transmission system |
| CN109193976A (en) * | 2018-09-18 | 2019-01-11 | 国网江苏省电力有限公司盐城供电分公司 | A kind of wireless charging system and its charging method |
| CN109193976B (en) * | 2018-09-18 | 2024-04-05 | 国网江苏省电力有限公司盐城供电分公司 | Wireless charging system and charging method thereof |
| CN109494887A (en) * | 2018-11-30 | 2019-03-19 | 西安工业大学 | A kind of electromechanical induction coil structure for wireless charging device |
| CN109861403A (en) * | 2019-04-03 | 2019-06-07 | 杭州如墨科技有限公司 | A kind of adjustable frequency wireless charging transmitting terminal mould group |
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| CN103248092B (en) | 2015-06-10 |
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