CN103280897A - Uniform-power wireless power unit - Google Patents
Uniform-power wireless power unit Download PDFInfo
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- CN103280897A CN103280897A CN2013101914208A CN201310191420A CN103280897A CN 103280897 A CN103280897 A CN 103280897A CN 2013101914208 A CN2013101914208 A CN 2013101914208A CN 201310191420 A CN201310191420 A CN 201310191420A CN 103280897 A CN103280897 A CN 103280897A
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- power supply
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Abstract
The invention discloses a uniform-power wireless power unit, which is in box shape; the upper and lower edges of the box-shaped device are provided with two parallel, symmetrical and annular wireless power supply sending devices for providing a uniform magnetic field; one side wall of the box-shaped device is provided with a control system used for measuring, controlling and indicating, and comprising a control circuit, a driving circuit, a power circuit and an energy transmission loop; the control circuit generates a control signal and sends the control signal to the driving circuit which provides a driving signal for the power circuit according to the control signal; the power circuit provides electric energy with set power and frequency for the energy transmission loop according to the driving signal; and the energy transmission loop converts the electric energy into magnetic energy for sending. The uniform-power wireless power unit is simple in structure and efficient in performance and has better practicability.
Description
Technical field
The present invention relates to a kind of wireless power supply, especially relate to a kind of magnetic coupling radio source electric supply installation that can send even power.
Background technology
At present, the radio source power supply technique has obtained swift and violent development, especially the development of magnetic coupling radio source electric supply installation is rapid, a lot of magnetic coupling wireless power supply applications has been arranged patent, and low power radio source electric power system goes on the market, and especially the mobile phone wireless electric supply system begins practicability.But the patent in existing this field mostly is based on an emission and the radio source electric power system that receiving system designs, such as existing mobile phone wireless electric power system.Its shortcoming is that received power is inhomogeneous in the supply district of electric power system, and namely power density is not equally distributed, consequently in different scopes different received powers is arranged, thus the unbalanced and underpower phenomenon that causes power to receive.
Summary of the invention
The invention provides a kind of magnetic coupling radio source electric supply installation that can send even power, to overcome the unbalanced and under powered problem of power reception that present wireless power exists.
For achieving the above object, the present invention adopts following technical scheme:
A kind of even power wireless power supply, comprise that the annular radio source that two parallel symmetries are placed sends coil, two radio source transmission coil shapes are measure-alike, and evenly power wireless power district is positioned at the cylinder chamber that described two radio sources send coil formation.
Further, this device also comprises the cavity box body, and described two radio sources send the last lower limb that coil lays respectively at the cavity box body, and the cavity of cavity box body is positioned at even power wireless power district.
Further, radio source sends coil for the sealing linear structure, such as circular, square, rectangle, ellipse, hexagon etc.
Further, the spacing of two annular radio source transmission coils is that annular radio source sends half of coil nominal diameter.
Further, this device also comprises control system, and described control system comprises control circuit, drive circuit, power circuit and energy transmission loop;
Described control circuit produces control signal and sends to drive circuit;
Described drive circuit provides the driving signal according to control signal for power circuit;
Described power circuit provides the electric energy of setting power and frequency according to driving signal for energy transmission loop
Described energy transmission loop converts electrical energy into the magnetic energy emission.
Further, power circuit is high frequency inverter.
Further, power circuit and control circuit and drive circuit form feedback control loop.
Further, two radio sources send the coils from parallel connection of coils setting, and described power circuit provides electric energy for two radio sources send coil synchronously.
Beneficial effect: (1) adopts two coil configuration, overcomes the weakness of single coil structure, can both receive uniform power preferably during for diverse location and state at power consumption equipment; (2) adopt case type structures, convenient and simple, make the placement that is easy to carry about with one of this device, have better practicality; (3) be provided with control system, measurement, control and deixis be provided, make charging process more accurately, performance is better.
Description of drawings
Fig. 1 is wireless power supply structural representation of the present invention.
Fig. 2 is control system schematic diagram among Fig. 1.
Fig. 3 calculates schematic diagram for even power magnetic coupling wireless power supply source magnetic flux density.
Fig. 4 is the unicoil Distribution of Magnetic Field.
Fig. 5 is the twin coil Distribution of Magnetic Field.
Fig. 6 is dijection coil magnetic field distribution figure
Embodiment:
Below in conjunction with accompanying drawing the present invention is done further explanation.
As shown in Figure 1, be one embodiment of the present of invention, should comprise the cavity box body by even power wireless power supply, top edge is provided with the annular radio source transmission coil 1 and 2 that two parallel symmetries are placed with lower limb, two radio source transmission coil shapes are measure-alike, and evenly power wireless power district is positioned at the cylinder chamber that described two radio sources send coil formation.In addition, sidewall of box type device is provided with the control system 3 for measurement, control and deixis.
In addition, place two parallel transmitting coils in the outer framework of device, this dijection coil can be the coil of arbitrary shape, square, circle etc., and the spacing that two annular radio sources send coils is about half of annular radio source transmission coil nominal diameter.This example adopts square coil, and the distance between two coils approximates half of the rectangle length of side.
Biot-Savart law according to electromagnetism has
Its schematic diagram as shown in Figure 3.Can use formula for the magnetic field intensity on its axis of unicoil with N circle
Calculate.The distribution of its magnetic field intensity as shown in Figure 4.The distribution that can see its magnetic field intensity in the drawings is inhomogeneous, and after adopting two coil configuration, its magnetic field is the stack in unicoil magnetic field, namely
Its Distribution of Magnetic Field as shown in Figure 5, the magnetic field simulation result is as shown in Figure 6.We can see that under the twin coil effect its cylinder chamber magnetic field is uniform and equal, have so just overcome the weakness of single coil structure, can both receive uniform power preferably during for diverse location and state at power consumption equipment.
Should can provide the uniform magnetic field of approximately constant by even power magnetic coupling wireless power supply source, thereby the transmitted power of approximately constant was provided, and can make the electrical appliance can both impregnable substantially normal use in the sphere of action of whole wireless power supply source.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. even power wireless power supply, it is characterized in that: this wireless power supply comprises that the annular radio source that two parallel symmetries are placed sends coil, two radio source transmission coil shapes are measure-alike, and evenly power wireless power district is positioned at the cylinder chamber that described two radio sources send coil formation.
2. a kind of even power wireless power supply according to claim 1, it is characterized in that: also comprise the cavity box body, described two radio sources send the last lower limb that coil lays respectively at the cavity box body, and the cavity of cavity box body is positioned at even power wireless power district.
3. a kind of even power wireless power supply according to claim 1 is characterized in that: described radio source sends coil for circular or square.
4. a kind of even power wireless power supply according to claim 1 is characterized in that: the spacing that described two annular radio sources send coils is that annular radio source sends half of coil nominal diameter.
5. a kind of even power wireless power supply according to claim 1 is characterized in that: also comprise control system, described control system comprises control circuit, drive circuit, power circuit and energy transmission loop;
Described control circuit produces control signal and sends to drive circuit;
Described drive circuit provides the driving signal according to control signal for power circuit;
Described power circuit provides the electric energy of setting power and frequency according to driving signal for energy transmission loop;
Described energy transmission loop converts electrical energy into the magnetic energy emission.
6. a kind of even power wireless power supply according to claim 5, it is characterized in that: described power circuit is high frequency inverter.
7. a kind of even power wireless power supply according to claim 6 is characterized in that: described power circuit and control circuit and drive circuit formation feedback control loop.
8. a kind of even power wireless power supply according to claim 6 is characterized in that: described two radio sources send the coils from parallel connection of coils setting, and described power circuit provides electric energy for two radio sources send coils synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101914208A CN103280897A (en) | 2013-05-21 | 2013-05-21 | Uniform-power wireless power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101914208A CN103280897A (en) | 2013-05-21 | 2013-05-21 | Uniform-power wireless power unit |
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| Publication Number | Publication Date |
|---|---|
| CN103280897A true CN103280897A (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013101914208A Pending CN103280897A (en) | 2013-05-21 | 2013-05-21 | Uniform-power wireless power unit |
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| CN (1) | CN103280897A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849373A (en) * | 2016-12-28 | 2017-06-13 | 深圳天珑无线科技有限公司 | A kind of wireless charging device |
| CN110875640A (en) * | 2018-08-31 | 2020-03-10 | 努比亚技术有限公司 | Wireless charging device, electromagnetic transmission control method, and computer-readable storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122846A (en) * | 2010-12-18 | 2011-07-13 | 浙江大学 | Wireless energy supply device for implantable wireless telemetry |
| CN203312926U (en) * | 2013-05-21 | 2013-11-27 | 东南大学 | An even-power wireless power supply apparatus |
-
2013
- 2013-05-21 CN CN2013101914208A patent/CN103280897A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122846A (en) * | 2010-12-18 | 2011-07-13 | 浙江大学 | Wireless energy supply device for implantable wireless telemetry |
| CN203312926U (en) * | 2013-05-21 | 2013-11-27 | 东南大学 | An even-power wireless power supply apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849373A (en) * | 2016-12-28 | 2017-06-13 | 深圳天珑无线科技有限公司 | A kind of wireless charging device |
| CN110875640A (en) * | 2018-08-31 | 2020-03-10 | 努比亚技术有限公司 | Wireless charging device, electromagnetic transmission control method, and computer-readable storage medium |
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Application publication date: 20130904 |