CN109038845B - Non-directional spherical equipment induction coupling type wireless power receiving device based on spherical segmentation - Google Patents
Non-directional spherical equipment induction coupling type wireless power receiving device based on spherical segmentation Download PDFInfo
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- CN109038845B CN109038845B CN201810868113.1A CN201810868113A CN109038845B CN 109038845 B CN109038845 B CN 109038845B CN 201810868113 A CN201810868113 A CN 201810868113A CN 109038845 B CN109038845 B CN 109038845B
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- 230000011218 segmentation Effects 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 title claims abstract description 10
- 238000010168 coupling process Methods 0.000 title claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 10
- 230000006698 induction Effects 0.000 title claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000005192 partition Methods 0.000 claims abstract description 14
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 4
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- 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
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- 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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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Abstract
An induction coupling type wireless power receiving device of non-directional spherical equipment based on spherical segmentation belongs to the field of wireless power transmission. The device is a hollow ball which can freely rotate along any direction, and the relative position of the center of the ball and the center of a circle of an external transmitting coil is unchanged. In appearance, the outer surface of the hollow sphere is provided with six equal-area partition surfaces, and each partition surface is a regular convex quadrangle. An electric energy receiving coil is fixed on the inner surface of each partition surface when viewed from the inside, and each receiving coil is closely adjacent to the receiving coil on the adjacent partition surface. The external transmitting coil and the plurality of receiving coils in the non-directional spherical device are not in electrical contact at all, and electric energy transmission is carried out by means of the electromagnetic induction principle. The invention adopts a spherical surface segmentation mode, lays a plurality of receiving coils to receive electric energy in multiple directions, and the plurality of receiving coils are connected in parallel after passing through the compensating circuit, the rectifying circuit and the filter circuit, thereby improving the energy transmission efficiency and realizing the charging of the spherical equipment under the omnibearing rotation.
Description
Technical Field
The invention belongs to the field of wireless power transmission, relates to inductive coupling type wireless power transmission, and particularly relates to an omnidirectional spherical equipment inductive coupling type wireless power receiving device based on spherical segmentation.
Background
The spherical device is often used as a moving device of the spherical robot and a connecting device of the robot arm. The robot can rotate in all directions and the mechanical arm can flexibly turn by the free rolling of the sphere. How to pass through the rolling ball body to supply power for the internal electric equipment is a key problem restricting the development of the spherical robot and the mechanical arm.
At present, the power supply mode of the spherical robot is mainly wire power supply. The power supply mode has four disadvantages, one is that the charging is restricted by a wire, and the rotation freedom degree of the sphere is limited; secondly, the machine needs to be stopped for charging, and the machine cannot work and charge simultaneously; thirdly, the charging wire is repeatedly plugged and pulled out, and is easy to damage; and fourthly, a special charging interface needs to be reserved, so that the integrity of the appearance of the robot is damaged.
The induction type wireless power supply can effectively make up the deficiency of the wire power supply mode. In the inductive wireless power supply, the transmitting coil transmits electric energy to the receiving coil through an electromagnetic induction principle, the receiving coil processes the received electric energy and then supplies the electric energy to a direct current load, and no electric contact exists between the transmitting coil and the receiving coil. The transmitting coil is placed on the outer side of the sphere, and the receiving coil is arranged on the inner side of the sphere. This kind of power supply mode had both avoided plug charging wire repeatedly, need not reserve extra interface that charges again, had very high flexibility and reliability. The relative position change of the transmitting coil and the receiving coil seriously influences the transmission efficiency and the transmission capability of the system. The spherical robot and the spherical equipment in the mechanical arm need to rotate freely, and the relative positions of the transmitting coil and the receiving coil are changed. In order to improve the transmission power capability, an omnidirectional power receiving device needs to be designed.
In order to effectively solve the above problems, the present invention provides an omnidirectional spherical device inductive coupling type wireless power receiving apparatus based on spherical segmentation, and the following specific invention contents are provided.
Disclosure of Invention
Aiming at the problems in the prior art, the invention adopts an inductive wireless power transmission technology to flexibly and reliably provide electric energy for the spherical equipment which rotates in all directions. The device specifically provides an omnidirectional spherical equipment inductive coupling type wireless electric energy receiving device based on spherical segmentation, and realizes omnidirectional and efficient electric energy receiving.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a no directional spherical equipment inductive coupling formula wireless power receiving arrangement based on sphere is cut apart, the device be one can follow arbitrary direction free rotation's hollow sphere, use with external transmitting coil cooperation, the centre of a circle relative position of the centre of a circle of hollow sphere and external transmitting coil unchangeable. In appearance, the outer surface of the hollow sphere is provided with six equal-area partition surfaces, and each partition surface is a regular convex quadrangle. When viewed from the inside, an electric energy receiving coil is fixed on the inner surface of each partition surface of the hollow sphere, and each receiving coil is close to the receiving coil on the adjacent partition surface as much as possible, so that the electric energy can be received to the maximum extent when the non-directional spherical equipment is freely turned. And the external transmitting coil and the plurality of receiving coils in the non-directional spherical equipment are not in electrical contact at all, and the electric energy transmission is carried out by depending on the electromagnetic induction principle. A spherical surface segmentation mode is adopted, a plurality of receiving coils are laid, electric energy can be received in multiple directions, and the transmission power capacity is improved, so that charging can be realized while the spherical equipment rotates in all directions.
The output ends of the six receiving coils on the inner surface of the hollow sphere are connected in parallel through a compensating circuit, a rectifying circuit and a filtering circuit, and the parallel circuits are connected with a DC-DC booster circuit in a cascade mode to drive a DC load together. The compensation circuit adopts an LCL compensation mode, and input reactive power can be reduced. The rectification circuit is an uncontrollable full-bridge rectification circuit and is used for converting high-frequency alternating current into direct current. The filter circuit is a parallel capacitor and filters harmonic waves in direct current. The DC-DC conversion circuit adopts a boost chopper circuit, so that the output voltage is higher than the voltage required by the load.
The invention has the beneficial effects that:
(1) by adopting an induction type non-contact electric energy transmission technology, no electric contact exists between the transmitting coil and the receiving coil in the non-directional spherical equipment, the spherical equipment can rotate freely, the charging is carried out while working, no wire interface exists, and the outer surface of the sphere does not need to be damaged.
(2) The receiving coil of the non-directional spherical equipment based on spherical segmentation can receive electric energy in multiple directions, and the electric energy transmission capability is improved.
(3) Six receiving coils in the non-directional spherical equipment are connected in parallel after passing through a compensating circuit, a rectifying circuit and a filter circuit, so that the energy transmission efficiency is improved.
Drawings
Fig. 1 is an inductively coupled wireless power transmitting coil and a spherical receiving device.
Fig. 2 is a wireless power receiving device of the omnidirectional spherical equipment based on six-sided division.
Fig. 3 is an internal circuit of a wireless power receiving apparatus of the omnidirectional ball-shaped device of the present invention.
Detailed Description
The following detailed description of the embodiments and the working principle of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, the inductive coupling wireless power transmitting coil and the spherical receiving device are respectively a transmitting coil and an inventive omnidirectional spherical device power receiving device based on six division surfaces, and the relative positions of the center of the omnidirectional spherical power receiving device and the center of the transmitting coil are unchanged. A spherical surface segmentation mode is adopted, a plurality of receiving coils are laid in the non-directional spherical equipment, and electric energy can be received in multiple directions. One transmitting coil is matched with six receiving coils, an inductive non-contact electric energy transmission technology is adopted, no electric contact exists between the transmitting coil and the receiving coils in the non-directional spherical equipment, and electric energy transmission is carried out by means of the electromagnetic induction principle. Specifically, high-frequency alternating current flows through a transmitting coil to excite a spatial high-frequency alternating magnetic field, so that high-frequency induced current is induced in a receiving coil in the non-directional ball.
As shown in FIG. 2, the inventive omnidirectional spherical device based on spherical segmentation has six segmentation surfaces, and each segmentation surface has completely consistent size and shape and is a regular convex quadrangle. The outer surface of the non-directional spherical equipment is smooth, each partition surface of the inner surface is fixed with one receiving coil, the circle center of each receiving coil is over against the sphere center of the sphere and is as close as possible to the receiving coil on the adjacent partition surface, and when the non-directional spherical equipment is freely turned, the electric energy is received to the maximum extent. Parameters such as the line width, the turn interval, the number of turns and the like of the six receiving coils are completely consistent, and the size of the sphere, the line width, the turn interval and the number of turns of the coil can be designed according to specific application.
As shown in figure 3, the internal circuit of the invented omnidirectional spherical wireless electric energy receiving device consists of sixAnd a receiving coil. Each coil is connected in parallel after passing through a compensation circuit, a rectifying circuit and a filter circuit, and the circuit after the parallel connection is cascaded with a DC-DC booster circuit to drive a direct current load. The compensation circuit adopts LCL compensation mode and is self-induced by coilpParallel capacitor C1And a series inductance L1The component is used for reducing reactive power and loss. The rectification circuit adopts an uncontrollable full-bridge rectification circuit and is composed of a rectification diode D1-D4The high-frequency alternating current received by the receiving coil is converted into direct current. The filter circuit is a parallel capacitor C2For filtering out harmonics in the dc current. The DC-DC conversion circuit adopts a boost chopper circuit and is composed of an inductor L2Switch S and diode D5And a capacitor C3The output voltage is made higher than the voltage required by the load.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.
Claims (1)
1. An induction coupling type wireless power receiving device of non-directional spherical equipment based on spherical segmentation is characterized in that the device is a hollow ball which can freely rotate along any direction, and the relative position of the center of the hollow ball and the center of a circle of an external transmitting coil is unchanged; the outer surface of the hollow sphere is provided with six equal-area partition surfaces, and each partition surface is a positive convex quadrangle; the inner surface of each partition surface of the hollow sphere is provided with an electric energy receiving coil, each receiving coil is close to the receiving coil on the adjacent partition surface, and when the non-directional spherical equipment is freely turned, the electric energy is received to the maximum extent;
the external transmitting coil and the plurality of receiving coils in the non-directional spherical equipment are not in electrical contact completely, and electric energy transmission is carried out by means of the electromagnetic induction principle; the non-directional spherical equipment adopts a spherical surface segmentation mode, a plurality of receiving coils are laid, electric energy is received in multiple directions, and the electric energy transmission capability is improved; the output ends of the six receiving coils on the inner surface of the hollow sphere are connected in parallel through a compensating circuit, a rectifying circuit and a filtering circuit, and the parallel circuits are connected with a DC-DC booster circuit in a cascade mode to drive a DC load together.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810868113.1A CN109038845B (en) | 2018-08-02 | 2018-08-02 | Non-directional spherical equipment induction coupling type wireless power receiving device based on spherical segmentation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810868113.1A CN109038845B (en) | 2018-08-02 | 2018-08-02 | Non-directional spherical equipment induction coupling type wireless power receiving device based on spherical segmentation |
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| CN109038845A CN109038845A (en) | 2018-12-18 |
| CN109038845B true CN109038845B (en) | 2021-09-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013005591A (en) * | 2011-06-16 | 2013-01-07 | Ihi Corp | Non contact power supply device |
| CN106953426A (en) * | 2017-04-21 | 2017-07-14 | 天津工业大学 | A kind of novel radio electric energy transmission omnidirectional three dimensional emission coil device |
| CN107343385A (en) * | 2015-01-26 | 2017-11-10 | 香港大学 | System and method for the load situation detection and Power Control of omnidirectional's wireless power conveying |
| CN108092417A (en) * | 2017-12-25 | 2018-05-29 | 珠海格力电器股份有限公司 | Wireless charging device and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9997960B2 (en) * | 2016-03-30 | 2018-06-12 | The Florida International University Board Of Trustees | Misalignment insensitive wireless power transfer with cylindrical, spherical and conical transmitter and receiver elements |
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2018
- 2018-08-02 CN CN201810868113.1A patent/CN109038845B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013005591A (en) * | 2011-06-16 | 2013-01-07 | Ihi Corp | Non contact power supply device |
| CN107343385A (en) * | 2015-01-26 | 2017-11-10 | 香港大学 | System and method for the load situation detection and Power Control of omnidirectional's wireless power conveying |
| CN106953426A (en) * | 2017-04-21 | 2017-07-14 | 天津工业大学 | A kind of novel radio electric energy transmission omnidirectional three dimensional emission coil device |
| CN108092417A (en) * | 2017-12-25 | 2018-05-29 | 珠海格力电器股份有限公司 | Wireless charging device and control method thereof |
Non-Patent Citations (2)
| Title |
|---|
| An Asymmetric Resonant Coupling Wireless Power Transmission Link for Micro-Ball Endoscopy;Tianjia Sun, Xiang Xie, Guolin Li, Yingke Gu, Yangdong Deng;《IEEE》;20101111;6531-6534 * |
| Omnidirectional inductive wireless charging of a 3D receiver cube inside a box;Sergkei Kamotesov;《IEEE》;20180630;1-4 * |
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