CN107863827B - Microwave receiving device, microwave charging device, handheld terminal and preparation method of super-surface cover plate - Google Patents
Microwave receiving device, microwave charging device, handheld terminal and preparation method of super-surface cover plate Download PDFInfo
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- CN107863827B CN107863827B CN201711319238.0A CN201711319238A CN107863827B CN 107863827 B CN107863827 B CN 107863827B CN 201711319238 A CN201711319238 A CN 201711319238A CN 107863827 B CN107863827 B CN 107863827B
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- 239000011521 glass Substances 0.000 claims description 5
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 5
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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
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H02J7/025—
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention relates to a microwave receiving device and a preparation method of a super-surface cover plate, wherein the device comprises the following steps: the surface of the super-surface cover plate is of a curved surface structure, and microwave antennas are arranged at different positions of the curved surface so as to obtain microwave signals at different angles; the microwave signal conversion module is used for converting the microwave signal into a direct current signal; and the direct current conversion module is used for converting the direct current signal into direct current electric energy. According to the microwave receiving device, the curved surface design of the super-surface cover plate and the microwave antenna arranged on the curved surface are adopted, so that microwave signals from different angles can be received.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to a microwave receiving device, a microwave charging device, a handheld terminal and a preparation method of a super-surface cover plate.
Background
The traditional power supply can be completed only by connecting a power supply and a signal wire through wires, and the like, and the power supply mode cannot get rid of the constraint of the wires and has the discharge danger caused by wire contact, friction and the like, so that the wireless charging method is applied. The current wireless charging methods can be divided into three categories in principle: firstly, an electromagnetic induction mode; second, magnetic resonance mode; and thirdly, microwave energy transmission mode. Depending on the state of the art, the first two ways of charging cannot exceed a charging distance of 1 meter and even contact charging is required, i.e. the first two ways are still charging at close distances in principle. The microwave charging technology is the only mode which can realize medium-distance and long-distance wireless charging at present.
The traditional microwave receiving device only supports receiving microwave signals at a parallel angle, so that the equipment to be charged is parallel to the microwave receiving device and can receive the microwave signals, and great inconvenience is brought to the position arrangement of the equipment to be charged.
Disclosure of Invention
Therefore, it is necessary to provide a microwave receiving device, a microwave charging device, a handheld terminal, and a method for manufacturing a super-surface cover plate, in order to solve the problem that the microwave receiving device only supports receiving microwave signals at parallel angles.
A microwave receiving apparatus, comprising:
the surface of the super-surface cover plate is of a curved surface structure, and microwave antennas are arranged at different positions of the curved surface so as to obtain microwave signals at different angles;
the microwave signal conversion module is used for converting the microwave signal into a direct current signal;
and the direct current conversion module is used for converting the direct current signal into direct current electric energy.
In one embodiment, the super-surface cover plate comprises a medium substrate, a super-surface film and a curved cover plate; the super-surface film is arranged between the medium substrate and the curved cover plate.
In one embodiment, the microwave antenna is formed by the super-surface film and is formed between the concave side surface of the curved cover plate and one side of the medium substrate.
In one embodiment, the dielectric substrate is an epoxy glass or polyethylene material.
In one embodiment, the curved cover plate is made of an insulating material.
In one embodiment, the microwave signal conversion module includes:
the filtering unit is used for receiving the microwave signal and filtering an interference signal to output a microwave signal with a preset frequency;
the matching unit is used for improving the signal-to-noise ratio of the microwave signal output after the processing of the filtering unit;
and the rectifying unit is used for converting the microwave signal output after the processing of the matching unit into a direct current signal.
In one embodiment, the microwave receiving apparatus further includes a main control board, and the microwave signal conversion module and the dc conversion module are embedded in the main control board.
A microwave charging device comprises the microwave receiving device and a battery accommodating part used for accommodating a battery, wherein the direct current conversion module is used for connecting the battery and providing direct current electric energy for the battery.
The utility model provides a handheld terminal with microwave function of charging, includes foretell microwave charging device, super surface cover plate locates the first side of battery holding portion, handheld terminal still including locate with the display screen of the relative second side in first side.
A method for preparing a super-surface cover plate comprises the following steps:
sputtering a layer of super-surface film on the concave side of the curved cover plate by magnetron sputtering;
forming the super-surface film into a microwave antenna pattern;
and covering a layer of medium substrate on the super-surface film, so that the super-surface film is positioned between the curved cover plate and the medium substrate.
The microwave receiving device can receive microwave signals from different angles through the curved surface design of the super-surface cover plate and the microwave antenna arranged on the curved surface.
Drawings
FIG. 1 is a schematic diagram of a microwave receiving device according to an embodiment;
FIG. 2 is a schematic view of a super-surface cover structure according to an embodiment;
FIG. 3 is a schematic diagram of a microwave signal conversion module according to an embodiment;
FIG. 4 is a schematic view of a microwave receiving device according to another embodiment;
FIG. 5 is a schematic diagram of a microwave charging apparatus according to an embodiment;
FIG. 6 is a schematic cross-sectional view of a handheld terminal with microwave charging function according to an embodiment;
FIG. 7 is a flow chart of a method for manufacturing a super-surface cover plate according to one embodiment;
FIG. 8 is a flow chart of a method of making a super-surface cover plate according to another embodiment;
fig. 9 is a flowchart of a microwave receiving method according to an embodiment;
fig. 10 is a flowchart of an implementation manner of step S200' in fig. 9.
Detailed Description
Fig. 1 is a microwave receiving device according to an embodiment, applied to an electronic device, the microwave receiving device including:
the super-surface cover plate 100 has a curved surface structure, and microwave antennas are disposed at different positions of the curved surface to obtain microwave signals at different angles.
The microwave signal conversion module 200 is configured to convert a microwave signal into a direct current signal.
The dc conversion module 300 is configured to convert the dc current signal into dc power.
In the present embodiment, the surface of the super-surface cover plate 100 is a curved surface structure. The curved surface structure means that the entire surface of the cover plate has a radian. Namely, the curved surface design is adopted in the middle of the cover plate or at the edge of the cover plate. Therefore, microwave signals from different angles can be received through the curved surface design of the super-surface cover plate 100 and the microwave antenna arranged on the curved surface.
Specifically, as shown in fig. 2, the super surface cover plate 100 includes a dielectric substrate 110, a super surface film 120 and a curved cover plate 130. Wherein, the super surface film 120 is disposed between the concave side of the curved cover plate 130 and one side of the dielectric substrate 110.
Specifically, referring to fig. 2, the microwave antenna is composed of the ultra-surface film 120.
In this embodiment, the super-surface thin film 120 is a two-dimensional plane structure composed of artificial atoms with special electromagnetic properties arranged in a certain manner, and a new structure for controlling electromagnetic wave beams by controlling wavefront phase, polarization and polarization can carefully distinguish original electromagnetic wave frequencies, so that the range of received electromagnetic wave frequencies is large, and the original electromagnetic wave frequencies which are weakened or increased can be absorbed, thereby improving the absorption rate of electromagnetic waves.
Specifically, referring to fig. 2, the dielectric substrate 110 is an epoxy glass or polyethylene material.
In the present embodiment, the dielectric substrate 110 is made of a glass fiber material, an alumina fiber material, or a silicon carbide fiber material. The material is easy to fold and has the following advantages: low dielectric constant, low dielectric loss, low thermal expansion coefficient, high temperature resistance and excellent heat-conducting property. The dielectric constant can reach an extremely low range of 1-2, and the ultra-surface cover plate 100 made of the dielectric substrate can obtain the extremely low dielectric constant on the whole.
Specifically, referring to fig. 2, the curved cover plate 130 is an insulating material.
In this embodiment, the electromagnetic wave is reflected when it encounters a metal material, but can penetrate through insulating materials such as glass, plastic, and ceramic. Therefore, the curved cover plate 130 in this embodiment may be made of an insulating material such as glass, plastic, or ceramic. When performing microwave wireless charging, a microwave signal (electromagnetic wave) may penetrate through the curved cover plate 130 composed of an insulating material and then be received by the ultra-surface film 120 attached to the concave side (inner side) of the curved cover plate 130.
Specifically, the super-surface film 120 and the curved cover plate 130(3D cover plate) have the same curvature, and the super-surface film 120 can receive microwave signals from different azimuth angles according to the curvature of the curvature. Compared with a common plane cover plate (2D cover plate), the absorption rate of the microwave signal by the super-surface film 120 attached to the curved cover plate 130 is improved by 30%.
Specifically, as shown in fig. 3, the microwave signal conversion module 200 includes:
the filtering unit 210 is configured to receive the microwave signal and filter the interference signal to output a microwave signal having a preset frequency.
Wherein, the filtering unit 210 is connected to a microwave antenna (not shown) in the super surface cover 100 for receiving microwave signals from the microwave antenna. Specifically, the filtering unit 210 may be a microwave filter. A microwave filter is a device used to separate microwave signals of different frequencies. Its main function is to suppress the unwanted signal, making it unable to pass through the filter, and only let the wanted signal pass through, so the preset frequency is the microwave frequency needed for charging the electronic device.
And the matching unit 220 is configured to improve a signal-to-noise ratio of the microwave signal output after the processing of the filtering unit.
The matching unit 220 is an impedance matching circuit. The impedance matching circuit is mainly used for realizing reflection-free transmission or maximum power transmission of microwave signals and further filtering interference signals, so that the signal-to-noise ratio of the microwave signals is improved. Secondly, the impedance matching circuit may also adjust the matching degree between the microwave antenna and the filtering unit 210, thereby improving the receiving efficiency of the microwave signal. In addition, the impedance matching circuit is related to the overall performance of the device, and the performance of the device can be optimized by realizing matching.
And the rectifying unit 230 is configured to convert the microwave signal output after being processed by the matching unit 220 into a direct current signal.
Further, the dc conversion module 300 receives the dc current signal output by the rectifying unit 230, and converts the dc current signal into dc power for charging the electronic device.
Specifically, as shown in fig. 4, the microwave receiving device further includes a main control board 10, and the microwave signal conversion module 200 and the dc conversion module 300 are embedded in the main control board 10.
In this embodiment, each functional device and functional circuit in the microwave signal conversion module 200 and the dc conversion module 300 are embedded in the master control plate 10, and the microwave signal conversion module 200 is connected to the super-surface cover plate 100. Wherein the functional device comprises a filter and a DC converter; the functional circuit includes a matching circuit and a rectifying circuit. The embedded structure not only saves the space of the microwave receiving device, but also saves the cost.
Fig. 5 is a schematic diagram of an embodiment of a microwave charging apparatus, including the microwave receiving apparatus, further including a battery accommodating portion 20 for accommodating a battery, and a dc conversion module 300 for connecting the battery and providing dc power to the battery.
In this embodiment, the microwave signal conversion module 200 receives the microwave signal from the super surface cover 100, performs filtering, matching and rectification on the microwave signal, and then outputs a dc current signal to the dc conversion module 300, and the dc conversion module 300 converts the dc current signal into dc power suitable for charging the battery and outputs the dc power to charge the battery in the battery accommodating portion 20.
Fig. 6 is a cross-sectional view of an embodiment of a handheld terminal with a microwave charging function, where the handheld terminal includes the microwave charging device. Wherein the super surface cover 100 is disposed on a first side of the battery receiving portion 20, and the handheld terminal further includes a display 30 disposed on a second side opposite to the first side.
In the present embodiment, the microwave signal conversion module 200 and the dc conversion module 300 are embedded in the main control board 10 (not shown), and the main control board 10 is disposed on the second side of the battery accommodating portion 20 between the display 30 and the battery accommodating portion 20. In addition, the super surface cover 100 is disposed on a first side of the battery receiving portion 20, and is connected to the main control board 10 for transmitting a microwave signal to the main control board 10, and the main control board 10 converts the microwave signal into a dc power to supply power to the battery in the battery receiving portion 20.
Fig. 7 illustrates a method for manufacturing the super surface cover plate 100 according to an embodiment, which includes:
step S200: and sputtering a layer of super-surface film 120 on the concave side of the curved cover plate 130 by magnetron sputtering.
Specifically, a super-surface film 120 of 4-50 microns is sputtered on the inner side of the curved cover plate 130 (the concave side of the curved cover plate).
Step S300: the ultra-surface film 120 is patterned into a microwave antenna.
Specifically, a photoresist layer is coated on the super-surface thin film 120, and a super-surface pattern is obtained through processes such as exposure, development, etching, and stripping. The super-surface pattern can be designed according to the shape of the microwave antenna and can be in different shapes such as a circle, a square, a triangle, a pentagon and the like.
Step S400: the super-surface film 120 is covered with a dielectric substrate 110, so that the super-surface film 120 is located between the curved cover plate 130 and the dielectric substrate 110.
In the present embodiment, the dielectric substrate 110 is made of a glass fiber material, an alumina fiber material, or a silicon carbide fiber material. The material has low dielectric constant, low dielectric loss, small thermal expansion coefficient, high temperature resistance and excellent heat conducting performance. Thereby facilitating reception of microwave signals by the ultra-surface film 120.
Further, as shown in fig. 8, before the step of sputtering a super-surface film 120 on the concave side of the curved cover plate 130 by magnetron sputtering, the method further includes:
step S100: and cleaning the concave side of the curved surface cover plate by adopting ultrasonic waves.
In this step, the ultrasonic waves are used to clean the dust and oil stains on the concave side of the curved cover plate 300, so as to sputter the ultra-surface film 120.
Fig. 9 shows a microwave receiving method according to an embodiment, the method includes:
step S100': a multi-angle microwave signal is acquired using the super-surface cover plate 100.
Step S200': the microwave signal is converted into a direct current signal.
Step S300': and converting the direct current signal into direct current electric energy.
In this embodiment, the super-surface cover 100 is made of a flexible material and can be bent into a curved shape such as an arc, a ring, or a sphere. The super-surface cover plate 100 can also adjust the curvature of the curved surface according to the position of the microwave signal source, so that the angle range of the super-surface cover plate 100 for receiving the microwave signal is as large as possible.
Specifically, as shown in fig. 10, the step of converting the microwave signal into the direct current signal specifically includes:
step S210': the microwave signal is received by the filter circuit, and the interference signal is filtered to output the microwave signal with the preset frequency.
The filter circuit is coupled to the microwave antenna (i.e., the ultra-surface film 120) in the ultra-surface cover 100 for receiving the microwave signal from the microwave antenna. The preset frequency is the microwave frequency required by the electronic equipment for charging.
Step S220': and the matching circuit is utilized to improve the signal-to-noise ratio of the microwave signal output after the processing of the filter circuit.
The matching circuit is an impedance matching circuit. The impedance matching circuit is mainly used for realizing reflection-free transmission or maximum power transmission of microwave signals and further filtering interference signals, so that the signal-to-noise ratio of the microwave signals is improved.
Step S230': and converting the microwave signal output after the processing of the matching circuit into a direct current signal by using a rectifying circuit.
The microwave receiving device receives microwave signals from different angles through the curved surface design of the super-surface cover plate 100 and the microwave antenna arranged on the curved surface.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A microwave receiving apparatus, comprising:
the surface of the super-surface cover plate is of a curved surface structure, and microwave antennas are arranged at different positions of the curved surface, and the super-surface cover plate comprises a dielectric substrate, a super-surface film and a curved surface cover plate; the super-surface film is arranged between the concave side of the curved surface cover plate and one side of the medium substrate and is used for acquiring microwave signals penetrating through the curved surface cover plate at different angles;
the microwave signal conversion module is used for converting the microwave signal into a direct current signal;
and the direct current conversion module is used for converting the direct current signal into direct current electric energy.
2. A microwave receiving device according to claim 1, wherein the microwave antenna is constituted by the ultra-surface film.
3. A microwave receiving device according to claim 2, wherein the dielectric substrate is an epoxy glass or polyethylene material.
4. The microwave receiving device according to claim 2, wherein the curved cover plate is an insulating material.
5. The microwave receiving apparatus of claim 1, wherein the microwave signal converting module comprises:
the filtering unit is used for receiving the microwave signal and filtering an interference signal to output a microwave signal with a preset frequency;
the matching unit is used for improving the signal-to-noise ratio of the microwave signal output after the processing of the filtering unit;
and the rectifying unit is used for converting the microwave signal output after the processing of the matching unit into a direct current signal.
6. The microwave receiving device according to claim 1, further comprising a main control board, wherein the microwave signal conversion module and the dc conversion module are embedded in the main control board.
7. A microwave charging device, comprising the microwave receiving device of any one of claims 1 to 6, and further comprising a battery accommodating portion for accommodating a battery, wherein the DC conversion module is connected to the battery and provides DC power for the battery.
8. A hand-held terminal with microwave charging function, comprising the microwave charging device of claim 7, wherein the super-surface cover plate is disposed on a first side of the battery accommodating portion, and the hand-held terminal further comprises a display screen disposed on a second side opposite to the first side.
9. A method for preparing a super-surface cover plate comprises the following steps:
sputtering a layer of super-surface film on the concave side of the curved cover plate by magnetron sputtering;
forming the super-surface film into a microwave antenna pattern;
and covering a layer of dielectric substrate on the super-surface film to enable the super-surface film to be positioned between the curved cover plate and the dielectric substrate, wherein the super-surface film is used for acquiring microwave signals penetrating through the curved cover plate at different angles.
10. The method for preparing a super-surface cover plate according to claim 9, wherein before sputtering a layer of super-surface film on the concave side of the curved cover plate by magnetron sputtering, the method further comprises:
and cleaning the concave side of the curved surface cover plate by adopting ultrasonic waves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711319238.0A CN107863827B (en) | 2017-12-12 | 2017-12-12 | Microwave receiving device, microwave charging device, handheld terminal and preparation method of super-surface cover plate |
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| CN201711319238.0A CN107863827B (en) | 2017-12-12 | 2017-12-12 | Microwave receiving device, microwave charging device, handheld terminal and preparation method of super-surface cover plate |
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| CN107863827B true CN107863827B (en) | 2020-11-06 |
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| CN112886231A (en) * | 2019-11-30 | 2021-06-01 | 华为终端有限公司 | Antenna and terminal equipment |
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| CN1564376A (en) * | 2004-03-30 | 2005-01-12 | 北京科迪安科技有限公司 | Electromagnetic wave receiving antenna |
| CN101860088A (en) * | 2010-05-27 | 2010-10-13 | 中国电子科技集团公司第三十八研究所 | Microwave wireless energy transfer system for airship |
| CN105609942A (en) * | 2015-12-21 | 2016-05-25 | 浙江大学 | Microwave energy receiving flat panel capable of absorbing linearly polarized incident wave in random direction |
| CN105629364A (en) * | 2016-03-31 | 2016-06-01 | 中国科学院光电技术研究所 | Wavelength selection type super surface device |
| CN107069899A (en) * | 2017-06-19 | 2017-08-18 | 郑州携能通信技术有限公司 | A kind of wireless charging reception system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170187250A1 (en) * | 2015-12-28 | 2017-06-29 | Korea Electronics Technology Institute | Electromagnetic wave radiation-based wireless power transmitter and wireless power transfer system using high gain antenna and beam forming and steering technology |
| CN107104519A (en) * | 2017-06-28 | 2017-08-29 | 郑州携能通信技术有限公司 | Microwave wireless charging system and sweeping robot |
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2017
- 2017-12-12 CN CN201711319238.0A patent/CN107863827B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564376A (en) * | 2004-03-30 | 2005-01-12 | 北京科迪安科技有限公司 | Electromagnetic wave receiving antenna |
| CN101860088A (en) * | 2010-05-27 | 2010-10-13 | 中国电子科技集团公司第三十八研究所 | Microwave wireless energy transfer system for airship |
| CN105609942A (en) * | 2015-12-21 | 2016-05-25 | 浙江大学 | Microwave energy receiving flat panel capable of absorbing linearly polarized incident wave in random direction |
| CN105629364A (en) * | 2016-03-31 | 2016-06-01 | 中国科学院光电技术研究所 | Wavelength selection type super surface device |
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