CN107026494B - Three-dimensional wireless charging structure for indoor use - Google Patents
Three-dimensional wireless charging structure for indoor use Download PDFInfo
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- CN107026494B CN107026494B CN201710273672.3A CN201710273672A CN107026494B CN 107026494 B CN107026494 B CN 107026494B CN 201710273672 A CN201710273672 A CN 201710273672A CN 107026494 B CN107026494 B CN 107026494B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
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- H02J7/025—
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- H02J5/005—
Abstract
The invention provides a three-dimensional wireless charging structure for an indoor, which regards the indoor room as a hollow cuboid, wherein the room comprises three groups of planes which are mutually orthogonal, namely front, back, left, right, upper and lower, and at least one plane in each group of planes is provided with a wireless electric energy transmitting structure. Three-dimensional wireless power transmission is characterized in that power is transmitted in three dimensions, so that if a receiving coil is placed inside, no matter how much the receiving coil rotates, the receiving coil can be still coupled with a space magnetic field, and the stability of the magnetic field is ensured and the space utilization rate is improved by adopting a honeycomb distribution mode.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to a three-dimensional wireless charging structure for indoor use.
Background
Currently, wireless power transmission technology is applied to daily life of people, such as intelligent equipment and charging of electric automobiles. Taking the existing wireless charging smart phone as an example, the traditional wireless power transmission technology is to install a receiving coil inside the mobile phone, and then place the mobile phone on a base with a power transmitting coil. The wireless charging mode omits a charging wire compared with the traditional charging mode, and energy is transmitted through an alternating electric field. This technique has a fixed transmission direction, i.e. the power transmission can be performed in only one dimension. The one-dimensional wireless electric energy transmission technology has the advantages of simple magnetic field distribution, easy analysis and calculation and easier realization, but the technology is suitable for occasions with relatively fixed transmitting and receiving positions. For example, once the charging handset leaves the charging base, the charging effect is greatly compromised or even impossible. This exposes the limitation of one-dimensional wireless charging that the power transfer efficiency will drop dramatically once there is a large relative offset between the receive and transmit coils. This is why wireless charging technology is not widely used in electronic devices at present, because it still needs to be implemented by means of a charging base, and the base still needs to be connected to a power source through a line, which is not significantly advantageous over the conventional wired charging method.
In order to overcome the problems of one-dimensional wireless power transmission, a three-dimensional wireless power transmission concept is proposed. The three-dimensional wireless power transmission system is provided with a set of power emission systems respectively in three dimensions, and the distribution of the space electromagnetic field is changed by controlling the current in each emission system, so that the electromagnetic field can completely cover the whole three-dimensional space, namely, the power can be transmitted from the three dimensions. Therefore, the receiving coil can be well coupled with the space magnetic field no matter in any position and any angle deflection in the space, and wireless power transmission is realized.
If the three-dimensional wireless power transmission concept is applied indoors, namely, a set of wireless power transmission system is installed indoors through design modification, any electrical appliance in the room can obtain power through wireless power transmission, and therefore a plurality of socket switches and power lines are omitted. The key point is how to select the installation position of the transmitting coil so as to ensure that the receiving coil in the electric equipment in the room can be well coupled with the transmitting coil.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: in order to overcome the defects in the prior art, the invention provides the three-dimensional wireless charging structure for the indoor space, the installation position of the transmitting system is reasonably selected, and the electric energy transmission at any position in the whole space is ensured.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a three-dimensional wireless charging structure for indoor, regard as a hollow cuboid with indoor room, the room is including three sets of planes around, control and upper and lower the mutual quadrature, is equipped with wireless electric energy transmitting structure on at least one plane in every group plane, wireless electric energy transmitting structure includes a plurality of transmitting coils, transmitting coil is from inside to outside arranges into the multilayer, every layer transmitting coil uses regular hexagon as basic unit to arrange, makes wireless electric energy transmitting structure wholly is honeycomb structure.
Specifically, the wireless electric energy transmitting structure positioned on the front-back plane and the left-right plane is a tiled structure, and each transmitting coil is guaranteed to be parallel to the plane where the transmitting coil is positioned.
Specifically, the wireless power transmitting structure on the upper plane is a tiled structure or an arc-top structure.
Specifically, the arc top type structure selects a geometric center of a regular hexagon as a center point of the top of a room, the regular hexagon at the center is a first layer, a plane where the first layer is located is parallel to a horizontal plane and is radiated outwards from the center, each layer is formed by a plurality of regular hexagons surrounded by emitting lines, an included angle between the first layer and the horizontal plane is 0 degrees, an included angle between each layer and the horizontal plane is gradually increased from the second layer, and an included angle between the outermost layer and the horizontal plane is smaller than or equal to 90 degrees.
Preferably, the angle between each layer and the horizontal increases at the same angle.
Preferably, the incremental angle of each layer is 5 °.
Further, each of the transmitting coils is connected to a resonant circuit, and the resonant circuit includes a capacitor and an inductor.
Furthermore, two terminals of the transmitting coil on the same surface are led out and connected in parallel and are intensively connected to a high-frequency inverter power supply.
Specifically, the transmitting coil comprises a copper tube and a coil wound on the copper tube.
Specifically, the diameter of the copper pipe is 4mm, the number of turns of the coil on the copper pipe is 5 turns, the thickness of the coil is smaller than 30mm, and the diameter of the coil is 300mm.
The circuit comprises: the device comprises a power supply loop, a high-frequency inverter, a multi-transmission resonant loop, a receiving resonant loop, a control and detection circuit, a load loop and the like. The power supply loop comprises 220V direct current power supply, input EMI filtering, AC/DC conversion and other functions. The high-frequency inversion part comprises a high-frequency inversion main loop, a driving loop, a control loop and the like. The multi-resonant transmitting loop is composed of a plurality of transmitting coils and a resonant capacitor. The receiving resonant circuit consists of a receiving coil and a resonant capacitor, and the load circuit consists of a plurality of parts including rectification, voltage stabilization and load.
The working mechanism is as follows: 220V alternating current is converted into direct current through AC/DC, then is converted into high-frequency alternating current through high-frequency DC/AC inversion, the inverted high-frequency alternating current is sent to a receiving resonant circuit through resonant coupling by a multi-transmission resonant circuit, and then energy meeting requirements is transmitted to a load through links such as rectification, voltage stabilization and the like, so that the task of whole wireless power transmission is completed.
The beneficial effects of the invention are as follows: when the installation position of the transmitting system is selected, the three-dimensional wireless power transmission is carried out firstly, namely, the power is transmitted in three dimensions, so that if a receiving coil is placed inside, no matter what angle the receiving coil rotates, the receiving coil can be still coupled with a space magnetic field, and the stability of the magnetic field is ensured and the space utilization rate is improved by adopting a honeycomb distribution mode.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic view of the honeycomb structure of the present invention;
FIG. 2 is a schematic view of the structure of the tiled architecture of the present invention;
fig. 3 is a schematic structural view of the arc top structure of the present invention.
In the figure: 1. transmitting coil, 2, roof, 3, wall.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the invention only by way of illustration, and therefore it shows only the constitution related to the invention.
As shown in fig. 1, in the three-dimensional wireless charging structure for indoor use according to the present invention, when the installation position of the transmitting system is selected, first three-dimensional wireless power is transmitted, that is, power is transmitted in three dimensions, and if a point in the indoor is selected as the origin, a space rectangular coordinate system is established, that is, power is transmitted in three directions of X, Y and Z. Thus if this places a receiving coil, it can still couple with the spatial magnetic field, regardless of its rotation to any angle.
Since the walls 3 and the ceiling of the roof 2 of the room are generally rectangular planes, the transmitting coil 1 is circular. In order to maximally utilize the effective area of the circular coil installation plane, the honeycomb structure formed by arranging and combining the honeycomb with the hexagonal shape as a basic unit is used as reference, so that the honeycomb structure is most stable for the placement of the cylinder and has higher space utilization rate. Therefore, the laying plane of the coils is designed to be arranged in a multi-layer hexagon structure, each transmitting coil 1 is placed in each hexagon, the transmitting coils 1 on the same side are powered by a set of independent adjustable inverter power supply, and a computer can be used for simulating the magnetic field distribution in the area in real time.
The specific structural design is as follows:
as shown in fig. 2-3, the room is regarded as a hollow cuboid (only three orthogonal faces are shown in the figure), and since the front and back, left and right, and upper and lower planes are orthogonal to each other, a three-dimensional magnetic field, i.e. transmission of electric energy in all three dimensions, can be ensured by installing the transmitting coils 1 on the three sets of planes, respectively. The receiving coil in the indoor electric equipment can be well coupled with the magnetic field no matter what angle the receiving coil is positioned at.
(1) Arrangement design of transmitting coil 1 on wall 3
According to the honeycomb structure, the honeycomb structure is installed in a tiled structure when being installed in the surrounding walls 3, namely, each transmitting coil 1 is ensured to be parallel to the plane where the walls 3 are positioned.
(2) Layout design of transmitting coil 1 on roof 2
In practical application, due to different requirements, electric equipment in some rooms is relatively concentrated and distributed, such as some offices. And the distribution of electric equipment in some rooms is more scattered, such as living rooms, bedrooms and the like. According to these two different situations, the roof 2 may take on two corresponding designs.
Flat-laying structure
The design can enable the magnetic fields with three dimensions to be completely orthogonal, can cover almost most areas in a room, has smaller dead zone, and can meet the situation that electric equipment is distributed relatively dispersedly.
Arc top type structure
The central point at the top of the room is selected as the geometric center of a regular hexagon, the regular hexagon at the center is a first layer, the plane of the first layer is parallel to the horizontal plane, the first layer radiates outwards from the center, and each layer is formed by a plurality of regular hexagons surrounded by the transmitting coils 1. The first layer forms an angle of 0 degrees with the horizontal plane, the second layer forms an angle of 5 degrees with the horizontal plane, the third layer forms an angle of 10 degrees with the horizontal plane, the fourth layer forms an angle of 15 degrees with the horizontal plane, and so on. The three-dimensional magnetic field generated by the structure is weakened in the vertical direction relative to the tiled design, but the magnetic field in a certain range near the center of the room is greatly strengthened, and the three-dimensional magnetic field is suitable for places where some electric equipment is relatively intensively distributed.
(3) Transmitting coil 1 is wound and connected
Materials: the copper pipe with the diameter of 4mm can increase the surface area of the conductor and reduce adverse effects caused by skin effect under the high-frequency alternating current state.
Turns of: the turns are closely arranged between the turns to reduce the thickness, and insulation treatment is carried out on the outer wall of the copper pipe, so that the thickness of the whole coil is kept within 30 mm.
Shape: 5 turns of regular circular rings with the diameter of 300mm are closely arranged between turns to form a cylinder.
The circuit comprises: each transmitting coil 1 is provided with a resonant circuit, and is mainly composed of a capacitor and an inductance coil, and the capacitor is used for generating resonance and transmitting electric energy, and the selection of the capacitor is determined according to inductance parameters of an actual coil and the calculation of the angular frequency of a high-frequency power supply.
And (3) a power supply: the power supply adopts a high-frequency power supply with the frequency above 800kHz, the power supply frequency is improved to a certain extent, and the transmission loss can be reduced.
The connection mode is as follows: two terminals of the coils in each plane are led out, connected in parallel, and connected to a power supply in a concentrated manner, namely, a high-frequency inverter power supply supplies power to a plurality of transmitting coils 1 at the same time.
The circuit comprises: the device comprises a power supply loop, a high-frequency inverter, a multi-transmission resonant loop, a receiving resonant loop, a control and detection circuit, a load loop and the like. The power supply loop comprises 220V direct current power supply, input EMI filtering, AC/DC conversion and other functions. The high-frequency inversion part comprises a high-frequency inversion main loop, a driving loop, a control loop and the like. The multi-resonant transmitting loop is composed of a plurality of transmitting coils and a resonant capacitor. The receiving resonant circuit consists of a receiving coil and a resonant capacitor, and the load circuit consists of a plurality of parts including rectification, voltage stabilization and load.
The working mechanism is as follows: 220V alternating current is converted into direct current through AC/DC, then is converted into high-frequency alternating current through high-frequency DC/AC inversion, the inverted high-frequency alternating current is sent to a receiving resonant circuit through resonant coupling by a multi-transmission resonant circuit, and then energy meeting requirements is transmitted to a load through links such as rectification, voltage stabilization and the like, so that the task of whole wireless power transmission is completed.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. A three-dimensional wireless charging structure for indoor, its characterized in that: the indoor room is regarded as a hollow cuboid, the room comprises three groups of planes which are mutually orthogonal, namely a front plane, a rear plane, a left plane, a right plane, an upper plane and a lower plane, a wireless electric energy transmitting structure is arranged on at least one plane of each group of planes, the wireless electric energy transmitting structure comprises a plurality of transmitting coils (1), the transmitting coils (1) are arranged into a plurality of layers from inside to outside, and each layer of transmitting coils (1) are arranged by taking a regular hexagon as a basic unit, so that the whole wireless electric energy transmitting structure is of a honeycomb structure;
the wireless power emission structure positioned on the upper plane is an arc-top structure;
the arc top type structure selects a geometric center of a regular hexagon as a center point of the top of a room, the regular hexagon at the center is a first layer, a plane where the first layer is located is parallel to a horizontal plane and is radiated outwards from the center, each layer is formed by a regular hexagon surrounded by a plurality of transmitting coils (1), an included angle between the first layer and the horizontal plane is 0 degree, an included angle between each layer and the horizontal plane gradually increases from a second layer, and an included angle between the outermost layer and the horizontal plane is smaller than or equal to 90 degrees;
the included angle between each layer and the horizontal plane increases gradually at the same angle;
the incremental angle of each layer is 5 °.
2. The three-dimensional wireless charging structure for use indoors of claim 1, wherein: the wireless electric energy transmitting structures located on the front-back plane and the left-right plane are tiled structures, and each transmitting coil (1) is guaranteed to be parallel to the plane where the transmitting coil is located.
3. The three-dimensional wireless charging structure for use indoors of claim 1, wherein: each transmitting coil (1) is connected with a resonant circuit, and the resonant circuit comprises a capacitor and an inductance coil.
4. The three-dimensional wireless charging structure for use indoors of claim 1, wherein: two terminals of the transmitting coil (1) on the same surface are led out and connected in parallel and are intensively connected to a high-frequency inverter power supply.
5. The three-dimensional wireless charging structure for use indoors of claim 1, wherein: the transmitting coil (1) comprises a copper tube and a coil wound on the copper tube.
6. The three-dimensional wireless charging structure for use indoors of claim 5, wherein: the diameter of the copper pipe is 4mm, the number of turns of the coil on the copper pipe is 5 turns, the thickness of the coil is smaller than 30mm, and the diameter of the coil is 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710273672.3A CN107026494B (en) | 2017-04-25 | 2017-04-25 | Three-dimensional wireless charging structure for indoor use |
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| CN201710273672.3A CN107026494B (en) | 2017-04-25 | 2017-04-25 | Three-dimensional wireless charging structure for indoor use |
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| CN107026494A CN107026494A (en) | 2017-08-08 |
| CN107026494B true CN107026494B (en) | 2024-04-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109980756B (en) * | 2019-03-25 | 2020-12-01 | 浙江大学 | Device for realizing multi-transmitting coil full decoupling in wireless power transmission system |
| CN112366832A (en) * | 2020-10-30 | 2021-02-12 | 广东小天才科技有限公司 | Wireless charger, system and method |
| CN112701802A (en) * | 2020-11-19 | 2021-04-23 | 国网浙江省电力有限公司宁波供电公司 | Wireless charging system and method for robot |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638113A (en) * | 2012-04-11 | 2012-08-15 | 华中科技大学 | Magnetic coupling resonance device |
| CN103460554A (en) * | 2011-03-31 | 2013-12-18 | 积水化学工业株式会社 | Building and construction method for same |
| CN206685947U (en) * | 2017-04-25 | 2017-11-28 | 常州大学 | 3-D wireless charging structure for interior |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103460554A (en) * | 2011-03-31 | 2013-12-18 | 积水化学工业株式会社 | Building and construction method for same |
| CN102638113A (en) * | 2012-04-11 | 2012-08-15 | 华中科技大学 | Magnetic coupling resonance device |
| CN206685947U (en) * | 2017-04-25 | 2017-11-28 | 常州大学 | 3-D wireless charging structure for interior |
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