CN113346627A - Wireless charging system of TV set based on molybdenum disulfide schottky diode - Google Patents
Wireless charging system of TV set based on molybdenum disulfide schottky diode Download PDFInfo
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- CN113346627A CN113346627A CN202110443480.9A CN202110443480A CN113346627A CN 113346627 A CN113346627 A CN 113346627A CN 202110443480 A CN202110443480 A CN 202110443480A CN 113346627 A CN113346627 A CN 113346627A
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- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052982 molybdenum disulfide Inorganic materials 0.000 title claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
-
- 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
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D8/00—Diodes
- H10D8/60—Schottky-barrier diodes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
本发明涉及电视机设计领域，特别涉及一种基于二硫化钼肖特基二极管的电视机无线充电系统。系统包括依次设置的无线电力接收单元、功率放大单元、电池单元。本发明的有益效果在于：使用无线充电系统的电视机可以摆脱电源线的束缚，使得电视机在使用时更加便捷，同时增加了用电的安全性。
The invention relates to the field of TV design, in particular to a TV wireless charging system based on a molybdenum disulfide Schottky diode. The system includes a wireless power receiving unit, a power amplifying unit, and a battery unit which are arranged in sequence. The beneficial effect of the present invention is that: the TV set using the wireless charging system can get rid of the restraint of the power cord, which makes the TV set more convenient to use and at the same time increases the safety of electricity consumption.
Description
Technical Field
The invention relates to the field of television design, in particular to a wireless television charging system based on a molybdenum disulfide Schottky diode.
Background
At present, a long power line needs to be inserted on a switch for a household television. On the one hand, the safety is not high, and on the other hand, the method is also very inconvenient. Especially, in a mobile video conference, the power cord is held, and an operator may trip over the power cord by carelessly stepping on the power cord, which is inconvenient.
Disclosure of Invention
In order to solve the problems of safety and convenience of a television with a power supply, the invention provides a television wireless charging system based on a molybdenum disulfide Schottky diode, and the specific scheme is as follows:
the wireless charging system comprises a wireless power receiving unit, a power amplifying unit and a battery unit which are sequentially arranged.
Specifically, the wireless power receiving unit includes a rectifier circuit; the antenna comprises an antenna, an input matching network, a capacitor C1, a rectifier diode D2 and a rectifier circuit output end, wherein the input matching network, the capacitor C1, the rectifier diode D2 and the rectifier circuit output end are sequentially connected with the antenna, the rectifier diode D1 is connected to a path between the capacitor C1 and the rectifier diode D2 at the cathode, the anode of the rectifier diode D1 is connected to the ground, the antenna also comprises a capacitor C2, one end of the capacitor C2 is connected to a path between the rectifier diode D2 and the rectifier circuit output end, and the other end of the capacitor C2 is connected to the ground.
Specifically, the rectifier diode is a lateral schottky diode based on a molybdenum disulfide semiconductor-metal phase junction.
Specifically, the rectifier circuit further comprises a load-compensated inductor L1, and the inductor L1 is connected between a rectifier diode D2 and a capacitor C2.
Specifically, the capacitor C1 is a dc blocking capacitor, and the capacitor C2 is a bypass capacitor.
Specifically, the input matching network includes: the circuit comprises a capacitor C3, a fourth capacitor C4, an inductor L2, an input matching network output end and an input matching network input end; the inductor L2 has one end connected to the input end of the input matching network and the other end connected to the output end of the input matching network, the capacitor C3 has one end connected to the path between the inductor L2 and the input end of the input matching network, and the capacitor C4 is connected to the path between the inductor L2 and the output end of the input matching network.
Specifically, the battery unit includes a battery and a charging circuit, and the charging circuit includes: seven resistors, a triode Q1, a triode Q2, a triode Q3, a voltage stabilizing diode DW1, a charging circuit input end and a charging circuit output end; the input end of the charging circuit is connected to the output end of the charging circuit sequentially through a resistor R1, a collector electrode of a triode Q2, an emitter electrode of a triode Q2, an emitter electrode of a triode Q3 and a collector electrode of a triode Q3; the emitter of the triode Q1 is connected to the input end of the charging circuit, the base of the triode Q1 is connected with the collector of the triode Q2 through a resistor R2, and the collector of the triode Q8926 is connected to the output end of the charging circuit through a resistor R7; the base of the transistor Q2 is connected to the ground through a voltage stabilizing diode DW 1; the base electrode of the triode Q3 is connected with the ground through a resistor R5 and a resistor R6 in sequence; the resistor R3 is connected to the path between the collector and the base of the transistor Q2, and the resistor R4 is connected to the path between the emitter of the transistor Q2 and ground.
Specifically, the power amplification unit includes: a triode Q4, a triode Q5, five resistors, a first positive input end, a second positive input end, a first negative input end, a second negative input end, a first output end and a second output end; the base electrode of the triode Q4 is connected with the first positive output end through a resistor R10, the collector electrode of the triode Q4 is connected with the collector electrode of the triode Q5 through a resistor R8 and a resistor R9 in sequence, and the emitter electrode of the triode Q4 is connected with the emitter electrode of the triode Q5; the base electrode of the triode Q5 is connected with the first negative input end through a resistor R11; the first output end is connected to a path between the collector of the transistor Q4 and the resistor R8; the second output end is connected to a path between the collector of the transistor Q5 and the resistor R9; a second positive input terminal is connected to a path between the resistor R8 and the resistor R9; the second negative input terminal is connected to the path between the emitter of transistor Q4 and the emitter of transistor Q5 through resistor R12.
Specifically, the method further comprises the following steps: first casing, second casing, first casing is installed on the second casing, and the installation includes in the object space that first casing and second casing formed: the wireless power receiving unit, battery unit, power amplification unit.
Specifically, the antenna is covered on the inner surface of the second housing.
The invention has the beneficial effects that:
(1) the television using the wireless charging system can get rid of the constraint of a power line, so that the television is more convenient to use, and meanwhile, the safety of power utilization is improved.
(2) The energy of the WIFI radio frequency signals visible everywhere in life can be fully utilized through the wireless charging system, and the purposes of energy conservation and emission reduction are achieved.
(3) The space of the rectifying circuit can be optimized by using the transverse Schottky diode of the molybdenum disulfide semiconductor-metal phase junction, so that the rectifying circuit is thinner, the area of the antenna is increased, and the energy conversion efficiency is improved.
(4) By adding the inductor L1 in the rectifying circuit, the capacitor C1 and the capacitor C2 can be compensated, the mismatch loss is minimized, and the conversion rate is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a rectifier circuit;
FIG. 3 is an electron microscope image of a molybdenum disulfide Schottky diode;
fig. 4 is a schematic view of a schottky phase junction of molybdenum disulfide under a forward bias of the schottky diode;
fig. 5 is a current responsivity diagram of a molybdenum disulfide schottky diode at different external bias points;
FIG. 6 is a schematic diagram of an input matching network;
FIG. 7 is a schematic diagram of a power amplification unit;
FIG. 8 is a schematic diagram of a charging circuit;
FIG. 9 is a schematic structural view of the present invention;
FIG. 10 is a schematic diagram showing the connection of a rectifying circuit, a power amplifying unit and a charging circuit;
fig. 11 is an antenna pattern.
The labels in the figure are specifically:
1. a power receiving unit; 2. a power amplifying unit; 3. a battery cell; 4. a first housing; 5. a second housing; 11. inputting a matching network; 12. an antenna.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a television wireless charging system based on a molybdenum disulfide Schottky diode, which comprises:
a wireless power receiving unit 1, a power amplifying unit 2, a battery unit 3 as shown in fig. 1; the wireless power receiving unit 1 is connected to a power amplifying unit 2, and the power amplifying unit 2 is connected to a battery unit 3.
As shown in fig. 2, the wireless power receiving unit 1 includes a rectifier circuit; the rectifying circuit is a double-tube series-parallel rectifying circuit and comprises an antenna 12, an input matching network 11, a capacitor C1, a rectifying diode D2 and a rectifying circuit output end which are sequentially connected with the antenna 12, a rectifying diode D1 of which the cathode is connected to a path between the capacitor C1 and the rectifying diode D2, the anode of the rectifying diode D1 is connected to the ground, the rectifying circuit also comprises a capacitor C2 of which one end is connected to a path between the rectifying diode D2 and the rectifying circuit output end, and the other end of the capacitor C2 is connected to the ground. The rectifying circuit further comprises a load-compensated inductor L1, and the inductor L1 is connected between the rectifying diode D2 and the capacitor C2.
As shown in FIGS. 3-5, FIG. 3 is a diagram of a rectifier diode being a phase junction of a molybdenum disulfide semiconductor-metal 2H-1T/1TTowards the schottky diode. According to the lateral Schottky diode of the phase junction of the molybdenum disulfide semiconductor and the metal 2H-1T/1T ', the gold layer and the metal 1T/1T' molybdenum disulfide form ohmic contact and simultaneously form ohmic contact with the semiconductor 2H molybdenum disulfide. The palladium layer forms a schottky contact with the semiconductor 2H molybdenum disulfide. Figure 4 is a view of a molybdenum disulfide schottky phase junction under forward bias,
bi is the built-in potential of the molybdenum disulfide Schottky diode, e is the electronic charge, and EF represents the Fermi level of the molybdenum disulfide semiconductor; the abscissa is the external bias voltage and the ordinate is the current density. Fig. 5 is a graph of current responsivity of a molybdenum disulfide schottky diode at different external bias points; the abscissa is the external bias voltage and the ordinate is the current density.
As shown in fig. 6, the input matching network 11 includes: the circuit comprises a capacitor C3, a fourth capacitor C4, an inductor L2, an input matching network output end and an input matching network input end; the inductor L2 has one end connected to the input end of the input matching network and the other end connected to the output end of the input matching network, the capacitor C3 has one end connected to the path between the inductor L2 and the input end of the input matching network, and the capacitor C4 is connected to the path between the inductor L2 and the output end of the input matching network.
As shown in fig. 7, the power amplification unit 2 includes: a triode Q4, a triode Q5, five resistors, a first positive input end, a second positive input end, a first negative input end, a second negative input end, a first output end and a second output end; the base electrode of the triode Q4 is connected with the first positive output end through a resistor R10, the collector electrode of the triode Q4 is connected with the collector electrode of the triode Q5 through a resistor R8 and a resistor R9 in sequence, and the emitter electrode of the triode Q4 is connected with the emitter electrode of the triode Q5; the base electrode of the triode Q5 is connected with the first negative input end through a resistor R11; the first output end is connected to a path between the collector of the transistor Q4 and the resistor R8; the second output end is connected to a path between the collector of the transistor Q5 and the resistor R9; a second positive input terminal is connected to a path between the resistor R8 and the resistor R9; the second negative input terminal is connected to the path between the emitter of transistor Q4 and the emitter of transistor Q5 through resistor R12.
As shown in fig. 8, the battery unit 3 includes a battery and a charging circuit, and the charging circuit includes: seven resistors, a triode Q1, a triode Q2, a triode Q3, a voltage stabilizing diode DW1, a charging circuit input end and a charging circuit output end; the input end of the charging circuit is connected to the output end of the charging circuit sequentially through a resistor R1, a collector electrode of a triode Q2, an emitter electrode of a triode Q2, an emitter electrode of a triode Q3 and a collector electrode of a triode Q3; the emitter of the triode Q1 is connected to the input end of the charging circuit, the base of the triode Q1 is connected with the collector of the triode Q2 through a resistor R2, and the collector of the triode Q8926 is connected to the output end of the charging circuit through a resistor R7; the base of the transistor Q2 is connected to the ground through a voltage stabilizing diode DW 1; the base electrode of the triode Q3 is connected with the ground through a resistor R5 and a resistor R6 in sequence; the resistor R3 is connected to the path between the collector and the base of the transistor Q2, and the resistor R4 is connected between the emitter of the transistor Q2 and ground.
As shown in fig. 9, the television set further comprises a first housing 4 and a second housing 5, wherein the first housing 4 is mounted on the second housing 5, the second housing 5 is a rear cover of the television set, and an accommodating space formed by the first housing 4 and the second housing 5 is internally provided with: a wireless power receiving unit 1, a power amplifying unit 2, a battery unit 3, and the antenna 12 is covered on the second case 5.
As shown in fig. 10, the connection diagram of the rectifying circuit, the power amplifying circuit and the charging circuit is shown; a first positive input end of the power amplification unit 2 is connected to an output end of the rectifying circuit, and a first negative input end is connected to the ground; the second positive input terminal is connected to the battery positive output terminal, and the second negative input terminal is connected to ground. The input end of the input matching network 11 is connected with the antenna 12, and the output end of the input matching network is connected with the capacitor C1.
And collecting electromagnetic radiation energy by using a wireless power receiving unit 1 in a 5.9-GHz WIFI frequency band, wherein the wireless power receiving unit 1 is integrated on the same film. The input power to the rectenna 12 is about 3dBm or 2 mW. The transmitter WIFI band antenna 12 is powered by a signal generator and is close to the antenna 12 of the rectifying circuit. The output voltage of the 12 rectifying circuit is about 250 mV.
As shown in fig. 11, is the pattern of the antenna 12. Due to low ohmic losses and good impedance matching with respect to the reference impedance of 50W, the overall gain of the antenna 12 is expected to be only-0.38 dB lower than 2.64dB for directivity D0. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443480.9A CN113346627A (en) | 2021-04-23 | 2021-04-23 | Wireless charging system of TV set based on molybdenum disulfide schottky diode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443480.9A CN113346627A (en) | 2021-04-23 | 2021-04-23 | Wireless charging system of TV set based on molybdenum disulfide schottky diode |
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