CN103368242A - Wireless charging receiving device with USB (Universal Serial Bus) interfaces of electronic equipment - Google Patents
Wireless charging receiving device with USB (Universal Serial Bus) interfaces of electronic equipment Download PDFInfo
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- CN103368242A CN103368242A CN2013103201578A CN201310320157A CN103368242A CN 103368242 A CN103368242 A CN 103368242A CN 2013103201578 A CN2013103201578 A CN 2013103201578A CN 201310320157 A CN201310320157 A CN 201310320157A CN 103368242 A CN103368242 A CN 103368242A
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Abstract
The invention discloses a wireless charging receiving device with USB (Universal Serial Bus) interfaces of electronic equipment. The wireless charging receiving device comprises a wireless electric energy receiving device, a rectifying circuit, a DC-DC (direct current to direct current) converting circuit and N USB interfaces which are connected in sequence, wherein the N USB interfaces are connected in parallel, the USB interfaces are connected with the electronic equipment through data lines; and the DC-DC converting circuit is respectively connected with the N USB interfaces connected in parallel. The wireless charging receiving device is simple, low in manufacturing cost and suitable for the wireless charging of electronic products supporting USB interface charging.
Description
Technical field
The present invention relates to the application of wireless power transmission technology, particularly a kind of electronic equipment wireless charging receiver of USB interface.
Background technology
The wireless power transmission technology was just attempted by tesla before more than 100 years experimentally.The sixties in 20th century, the magnetic inductive delivery of electrical energy obtained trial at Medical Devices, the concept that occurs resolver in the time of 20 century 70, the eighties in 20th century, Inductive transmission obtained good theory study and practice aspect the wireless charging of electric automobile, the nineties in 20th century, the scholar of Auckland, NZL university is abundant and perfect ICPT(inductively coupled power transfer, ICPT) concept of technology, i.e. induction coupling delivery of electrical energy.2005, the research team of City University of Hong Kong succeeds in developing universal non-contact charge platform, and was significant to the development of wireless power transmission.2006, the researcher of the Massachusetts Institute of Technology (MIT) utilizes the bulb of having lighted a 60W about the 2m distance with 40% efficient of the resonance technique success of physics, this experiment becomes another new breakthrough of wireless power transmission technology, and has started the upsurge of whole world wireless power transmission research.
The wireless power transmission technology is a kind of delivery of electrical energy mode of wide application prospect, have the advantages such as safe, reliable, flexible, convenient, day by day be subject to the attention of countries in the world, and more and more be widely used in the various places that are not suitable for or are inconvenient to use wire contact electric energy transmitting, such as occasions such as implantable medical device, mobile electronic product, robot, rail electric car power supplies.There is plug process inconvenience in the wireless charging mode of traditional plug-type and has potential safety hazard, inconsistent the causing of different charge power supply adaptor interfaces can only be the corresponding corresponding product line of charger of a product line, causes the waste of natural resources and social resources.
Summary of the invention
The present invention for the shortcoming that overcomes prior art and exist with not enough, a kind of electronic equipment wireless charging receiver of USB interface is provided.
The present invention adopts following technical scheme:
A kind of electronic equipment wireless charging receiver of USB interface, comprise radio energy receiving system, rectification circuit, DC-DC translation circuit and N USB interface in parallel of connecting successively, described USB interface is connected with electronic equipment by data wire, described DC-DC translation circuit is connected described N 〉=1 with the USB interface of N parallel connection respectively.
Described radio energy receiving system is made of coil.
Described coil is spatially spiral structure or snail structure.
The present invention compared with prior art has following advantage:
The present invention need not the electronic equipment internal structure is transformed, as long as electronic equipment is supported the charging modes of USB interface, can realize the mode of wireless charging, and implementation is simple, the Voltage-output that wireless power transmission receives after regulating is stable, guarantees safe, the efficient charging of electronic equipment, simultaneously, the present invention can charge to a plurality of electronic equipments simultaneously, increased electronic equipment flexibility, saved nature and social resources.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the spatially spiral structure coil form of radio energy receiving system among Fig. 1;
Fig. 3 is the snail structure coil form of radio energy receiving system among Fig. 1;
Fig. 4 is based on the DC-DC translation circuit of MAX756 and the connection diagram of a USB interface;
Fig. 5 is the output DC corrugating of MAX756 chip, the i.e. input voltage of USB interface.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, a kind of electronic equipment wireless charging receiver of USB interface, comprise radio energy receiving system 1, rectification circuit 2, DC-DC translation circuit 3 and N USB interface 4 in parallel of connecting successively, described N 〉=1, described USB interface 4 is connected with electronic equipment by data wire, and described DC-DC translation circuit 3 is connected with the USB interface 4 of N parallel connection respectively.
Described N USB interface 4 in parallel can be given a plurality of electronic products (mobile phone, panel computer, Mp3 player etc.) charging simultaneously.
Described radio energy receiving system 1 is made of coil, and Fig. 2 and coil shown in Figure 3 are that spatially spiral structure or snail structure realize that the radio energy of resonant mode or induction type receives.
Be to realize the wireless power transmission of resonant mode, the coil of radio receiver can be self-resonant coil or reach resonance by coil external compensation electric capacity.
What described radio energy receiving system 1 received is high-frequency alternating current, by rectification circuit 2 conversion direct currents, the direct voltage of rectification circuit 2 outputs may exist larger fluctuation or direct voltage ripple value too large owing to the variation of wireless transmission distance, do not satisfy electronic equipment to the requirement of charging voltage, then rectification circuit 2 outputs can provide stable direct current output charging voltage by 3 of DC-DC translation circuits, guarantee the charging safety of electronic equipment.
The present invention converts the electric energy that receives to direct current to high-frequency alternating current by rectification circuit, then obtains meeting the direct voltage of electronic equipment charging requirement by DC-DC translation circuit 3, can realize electronic equipment is charged through USB interface 4 again.
Embodiment 1
As shown in Figure 4, the present embodiment is the connection diagram of DC-DC translation circuit and one 's USB interface, and it is identical that other parts and Fig. 1 connect, 1 among Fig. 4,2,3,4 expressions be the pin of an A type USB interface.
The present embodiment adopts the DC-DC translation circuit based on MAX756, power supply electric capacity: C
3=150 μ F, C
4=100 μ F; Power inductance: L=22 μ H; Shunt capacitance: C
1=C
2=0.1 μ F; Resistance: R
4=R
5=10k Ω; Schottky diode model: 1N5819.
The electronic equipment radio energy receiving system that described radio energy receiving system adopts resonant mode or induction type wireless power transmission technology to realize.
The circuit working principle: the DC-DC translation circuit of MAX756 chip has boost function, and this circuit has higher power supply conversion efficiency, and has battery undervoltage measuring ability (4 pin LBO and 5 pin LBI).The minimum input voltage of MAX756 chip is low to moderate 0.7V, and output voltage can be exported the direct voltage of 3.3V or 5V according to the logic control control of 2 pin.In addition, MAX756 easily realizes the shut-off function of circuit with a shutdown control end.
The output DC corrugating of the present embodiment circuit be USB interface input voltage as shown in Figure 5.Waveform can be verified by experiment, realizes the electronic product with USB charging inlet is carried out safe and reliable charging.
The present invention has realized charging to electronic equipment by wireless mode, avoided because potential safety hazard and the inconvenience that the plug plug brings, and the mode by USB interface is connected to electronic equipment and charges, thereby need not can realize wireless charging to electronic equipment internal transformation.This invention is simple, and cost of manufacture is cheap, is fit to the electronic product of supporting the USB interface charging is carried out wireless charging.
Above-described embodiment is the better execution mode of the present invention; but embodiments of the present invention are not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (3)
1. the electronic equipment wireless charging receiver of a USB interface, it is characterized in that, comprise radio energy receiving system, rectification circuit, DC-DC translation circuit and N USB interface in parallel of connecting successively, described USB interface is connected with electronic equipment by data wire, described DC-DC translation circuit is connected described N 〉=1 with the USB interface of N parallel connection respectively.
2. the electronic equipment wireless charging receiver of a kind of USB interface according to claim 1 is characterized in that, described radio energy receiving system is made of coil.
3. the electronic equipment wireless charging receiver of a kind of USB interface according to claim 2 is characterized in that, described coil is spatially spiral structure or snail structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103201578A CN103368242A (en) | 2013-07-26 | 2013-07-26 | Wireless charging receiving device with USB (Universal Serial Bus) interfaces of electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103201578A CN103368242A (en) | 2013-07-26 | 2013-07-26 | Wireless charging receiving device with USB (Universal Serial Bus) interfaces of electronic equipment |
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| CN103368242A true CN103368242A (en) | 2013-10-23 |
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| CN2013103201578A Pending CN103368242A (en) | 2013-07-26 | 2013-07-26 | Wireless charging receiving device with USB (Universal Serial Bus) interfaces of electronic equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578459A (en) * | 2015-01-28 | 2015-04-29 | 山东共达电声股份有限公司 | Wireless charger receiving end and application equipment thereof |
| CN104659851A (en) * | 2013-11-20 | 2015-05-27 | 南京化工职业技术学院 | Wind-light power generation wireless charger |
| WO2017016376A1 (en) * | 2015-07-29 | 2017-02-02 | 比亚迪股份有限公司 | Wireless charging transmission device |
| CN106856337A (en) * | 2015-12-09 | 2017-06-16 | 江苏紫米电子技术有限公司 | A kind of many mouthfuls of fast charge methods and system |
| CN106897240A (en) * | 2017-02-27 | 2017-06-27 | 郑州云海信息技术有限公司 | A kind of USB interface-based movable storage device |
| CN108512281A (en) * | 2018-05-15 | 2018-09-07 | 郑州携能通信技术有限公司 | Onboard wireless charging method, system and relevant apparatus |
| CN111130222A (en) * | 2018-10-30 | 2020-05-08 | 北京小米移动软件有限公司 | Wireless charging power supply circuit and method and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298757Y (en) * | 2008-08-19 | 2009-08-26 | 富达通科技股份有限公司 | Induction power supply |
| CN103051040A (en) * | 2013-01-28 | 2013-04-17 | 罗利文 | Capacitive energy storage type rechargeable battery and charging device thereof |
| CN203434725U (en) * | 2013-07-26 | 2014-02-12 | 华南理工大学 | Electronic device wireless charging and receiving device with USB interfaces |
-
2013
- 2013-07-26 CN CN2013103201578A patent/CN103368242A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298757Y (en) * | 2008-08-19 | 2009-08-26 | 富达通科技股份有限公司 | Induction power supply |
| CN103051040A (en) * | 2013-01-28 | 2013-04-17 | 罗利文 | Capacitive energy storage type rechargeable battery and charging device thereof |
| CN203434725U (en) * | 2013-07-26 | 2014-02-12 | 华南理工大学 | Electronic device wireless charging and receiving device with USB interfaces |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659851A (en) * | 2013-11-20 | 2015-05-27 | 南京化工职业技术学院 | Wind-light power generation wireless charger |
| CN104578459A (en) * | 2015-01-28 | 2015-04-29 | 山东共达电声股份有限公司 | Wireless charger receiving end and application equipment thereof |
| CN104578459B (en) * | 2015-01-28 | 2018-01-26 | 山东共达电声股份有限公司 | Wireless charger receiving terminal and its application apparatus |
| WO2017016376A1 (en) * | 2015-07-29 | 2017-02-02 | 比亚迪股份有限公司 | Wireless charging transmission device |
| CN106856337A (en) * | 2015-12-09 | 2017-06-16 | 江苏紫米电子技术有限公司 | A kind of many mouthfuls of fast charge methods and system |
| CN106897240A (en) * | 2017-02-27 | 2017-06-27 | 郑州云海信息技术有限公司 | A kind of USB interface-based movable storage device |
| CN106897240B (en) * | 2017-02-27 | 2020-03-06 | 郑州云海信息技术有限公司 | Mobile storage device based on USB interface |
| CN108512281A (en) * | 2018-05-15 | 2018-09-07 | 郑州携能通信技术有限公司 | Onboard wireless charging method, system and relevant apparatus |
| CN111130222A (en) * | 2018-10-30 | 2020-05-08 | 北京小米移动软件有限公司 | Wireless charging power supply circuit and method and electronic equipment |
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Application publication date: 20131023 |