CN108233554A - A kind of wireless charging device - Google Patents
A kind of wireless charging device Download PDFInfo
- Publication number
- CN108233554A CN108233554A CN201711475201.7A CN201711475201A CN108233554A CN 108233554 A CN108233554 A CN 108233554A CN 201711475201 A CN201711475201 A CN 201711475201A CN 108233554 A CN108233554 A CN 108233554A
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- Prior art keywords
- wave
- capacitance
- rectifier cell
- wireless charging
- group
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Classifications
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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
Abstract
The invention discloses a kind of wireless charging devices, including electromagnetic induction element group, select wave rectifier cell group and DC power output end, wave rectifier cell group is selected to be internally provided with and selects wave commutating circuit, wave commutating circuit is selected to include rectifying part and select wave part, wave rectifier cell group is selected to include rectifier cell and filter element, electromagnetic induction element group selects wave rectifier cell group to be electrically connected with DC power output end, DC power output end is electrically connected with rechargeable battery with wave rectifier cell group is selected to be electrically connected.The non-electromagnetic wave that for charging actively emits of this wireless charging device in ambient enviroment passively can obtain the energy that electromagnetic wave gives out by electromagnetic induction in the case where bandwidth is sufficiently large, then wave commutating circuit is selected to export unidirectional Rectified alternating current to DC power output end by select wave rectifier cell group, it can realize and not limited under the premise of charging the battery by indoor/outdoor charging environment, especially suitable for charging to mobile terminal.
Description
Technical field
The present invention relates to a kind of charging unit, specifically a kind of wireless charging device to be charged by radio belongs to
In wireless charging technical field.
Background technology
There is large screen, the intelligent mobile terminal for supporting intelligent multi-point touch, high-performance CPU and graphics processor in recent years
Constantly universal, while people's more good Information Mobile Service and experience is brought, continuous increase of mobile terminal power consumption makes original
Originally awkward battery capacity of mobile terminal problem is more prominent, and the battery electric quantity state of mobile terminal, which becomes, restricts its performance
One of most important factor.
There are mainly two types of the measures for solving quantity problem at present：A kind of is to solve asking for not enough power supply by replacing battery
Topic, however polylith battery is inconvenient to carry；Another kind is charged by charger, and charger charging needs to have charging item
It could carry out in the environment of part, for interior, typically directly connect the charger for being connected with indoor power supply with mobile terminal
It charges, for open air, is typically connect and filled with mobile terminal using the various charger babies including Solar energy charger
Electricity, but charger baby is as battery, capacity is limited, and it is also inconvenient to carry.
Therefore, occur wireless charging technology in the prior art, wireless charging technology, that is, electrical equipment in a non contact fashion from
Fixed power grid obtains the technology of electric energy, and wireless energy transfer is mainly with microwave radiation formula, inductive coupling type, magnetic coupling resonance at present
Three kinds of transmission modes of formula, the wherein wireless charging of mobile terminal are typically using inductive coupling type transmission mode.Inductive coupling type
Transmission mode is that the primary coil of transformer and secondary coil are carried out separation realization, it can realize larger transimission power, so
And transmission range is nearer, only 1mm~200mm, and two side positions of separable transformer need to be relatively fixed when being charged.
In addition, the transformer primary coil of inductive coupling type transmission mode, which still needs to connect with power supply, could generate sensing electric current, that is, sensing
Manifold type transmission mode is still only applicable to indoor and can not still use outdoors.
Invention content
In view of the above existing problems in the prior art, the present invention provides a kind of wireless charging devices, can realize to battery
It realizes and is not limited by indoor/outdoor charging environment under the premise of being charged, especially suitable for charging to mobile terminal.
To achieve these goals, this wireless charging device includes electromagnetic induction element group, selects wave rectifier cell group and straight
Galvanic electricity source output terminal selects wave rectifier cell group to be internally provided with and selects wave commutating circuit, and wave commutating circuit is selected to include rectifying part and choosing
Wave part selects wave part that can be filtered according to the wave band that the stabilization bandwidth frequency of the electromagnetic wave passively obtained selects frequency higher
Wave, select wave rectifier cell group include rectifier cell and filter element, electromagnetic induction element group with wave rectifier cell group is selected to be electrically connected,
Wave rectifier cell group is selected to be electrically connected with DC power output end, DC power output end is electrically connected with rechargeable battery.
Scheme as a further improvement on the present invention, this wireless charging device further include voltage stabilizing element group, voltage stabilizing element group
It is arranged on and selects between wave rectifier cell group and DC power output end and respectively with wave rectifier cell group and DC power supply is selected to export
End electrical connection.
Scheme as a further improvement on the present invention, this wireless charging device further include capacitance, and capacitance is arranged on voltage stabilizing member
Between part group and DC power output end, the input terminal of capacitance is electrically connected with voltage stabilizing element group, the output terminal and direct current of capacitance
Source output terminal is electrically connected and the output terminal of capacitance is equipped with charge switch circuit and charge protection circuit.
Scheme as a further improvement on the present invention, the capacitance are set as more than one piece, more than one piece capacitance is connected in series with each other,
Or be connected in parallel mutually or connection in series-parallel Hybrid connections form capacitance group, charge switch circuit and charge protection circuit setting
On the output terminal of capacitance group.
Scheme as a further improvement on the present invention is equipped with coupling cock between the voltage stabilizing element group and capacitance group.
A kind of embodiment of wave commutating circuit rectifying part is selected as the present invention, selects the rectifying part in wave commutating circuit
It is bridge rectifier circuit.
Compared with prior art, the electromagnetic wave that this wireless charging device is directed to is the non-electromagnetism actively emitted for charging
Wave, i.e. this electromagnetic wave are not that traditional wireless charger being connect with power supply is launched, carry out wireless charging for mobile terminal
The electromagnetic wave of electricity, but in ambient enviroment the various frequencies of generally existing electromagnetic wave, as long as to there is the bandwidth sufficient for ambient enviroment
Enough big electromagnetic waves, this wireless charging device can obtain the energy that the electromagnetic wave gives out by electromagnetic induction and passively, therefore
The environment that can not be charged by traditional indoor/outdoor is limited, and be can be thus achieved simply by the presence of the electromagnetic wave and is carried out nothing whenever and wherever possible
Micro USB electricity；Due to being equipped with capacitance, storage energy is carried out through the electricity that wave rectifier cell group exports is selected to enter capacitance, works as capacitance
Amount of charge when reaching setting charging requirement, capacitance opens charge switch circuit and charge protection circuit, the electricity in capacitance
Lotus exports and charges through DC power output end to rechargeable battery, realizes secondary charge and discharge；This wireless charging device
DC power output end can directly connect with electronic product each including mobile terminal etc. and charge, can also be wireless by this
The implantation of charging unit modularization includes the inside of each electronic product such as mobile terminal and realization and electronics is connect with rechargeable battery
The integration of product, especially suitable for charging to mobile terminal.
Description of the drawings
Fig. 1 is the principle of the present invention schematic diagram.
In figure：1st, electromagnetic induction element group, 2, select wave rectifier cell group, 3, DC power output end, 4, voltage stabilizing element group,
5th, capacitance.
Specific embodiment
Electromagnetic wave is widely present in ambient enviroment, is spread out in space with magnetic field by same phase and mutually perpendicular electric field
The concussion particle wave that hair tonic is penetrated is the electromagnetic field propagated in the form of fluctuation, has duality principle.Electromagnetic wave is shear wave, frequency
Rate is the key property of electromagnetic wave.
Electromagnetic wave is a kind of motion morphology of electromagnetic field.Electricity can say it is one integrity with both sides with magnetic, and the electric field of variation can generate magnetic
Field (i.e. electric current can generate magnetic field), changing magnetic field can then generate electric field.The electric field and changing magnetic field of variation constitute one
Inseparable unified field, here it is electromagnetic field, and propagation of the electromagnetic field changed in space forms electromagnetic wave.
When wave frequency is low, it could mainly be transmitted by tangible electric conductor, it can be certainly when wave frequency is high
By being transmitted in space, it can also be strapped in tangible electric conductor and transmit.The reason of being transmitted in free space is in high-frequency
Electric oscillation in, magnetoelectricity change is very fast, and energy can not possibly all return to former oscillating circuit, then electric energy, magnetic energy with electric field with
The mechanical periodicity in magnetic field is gone out in the form of an electromagnetic wave to spatial, and energy can also be transmitted outward by not needing to medium, here it is
A kind of radiation.The magnetic field of electromagnetic wave, electric field and its direction of travel three are orthogonal.Electromagnetic wave has energy, and amplitude edge is propagated
The vertical direction in direction makees periodical alternation, and intensity and distance square are inversely proportional, and wave drives energy in itself, any position it
Energy work rate and amplitude it is square directly proportional.
Radio wave is frequency between 3HZAbout 300GHZBetween electromagnetic wave, also referred to as rf wave or abbreviation radio frequency,
Radio, radiotechnics are that sound signal or other signals are utilized Electromagnetic Wave Propagation after conversion.
The application is to recycle the energy of electromagnetic wave being widely present in ambient enviroment to be used to charge the battery.
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, this wireless charging device includes electromagnetic induction element group 1, selects wave rectifier cell group 2 and DC power supply
Output terminal 3 selects wave rectifier cell group 2 to be internally provided with and selects wave commutating circuit, and wave commutating circuit is selected to include rectifying part and select wave portion
Point, select wave part that can be filtered according to the wave band that the stabilization bandwidth frequency of the electromagnetic wave passively obtained selects frequency higher,
Select wave rectifier cell group 2 include rectifier cell and filter element, electromagnetic induction element group 1 with wave rectifier cell group 2 is selected to be electrically connected,
Wave rectifier cell group 2 is selected to be electrically connected with DC power output end 3, DC power output end 3 is electrically connected with rechargeable battery.
The operation principle of this wireless charging device：In ambient enviroment, the non-electromagnetic wave actively emitted for charging is in band
In the case that width is sufficiently large, this wireless charging device can carry out electromagnetic induction by electromagnetic induction element group 1 and passively obtain week
The energy that electromagnetic wave gives out in collarette border selects wave rectifier cell group 2 by selecting wave commutating circuit according to the electromagnetism passively obtained
The wave band that the stabilization bandwidth frequency selection frequency of wave is higher is filtered and exports unidirectional arteries and veins to DC power output end 3 after rectification
Dynamic direct current, and then realize and charge to rechargeable battery.
In order to realize stable voltage output, scheme, this wireless charging device also wrap as a further improvement on the present invention
Include voltage stabilizing element group 4, voltage stabilizing element group 4 be arranged on select between wave rectifier cell group 2 and DC power output end 3 and respectively with
Wave rectifier cell group 2 and DC power output end 3 is selected to be electrically connected.
Electromagnetic wave is smaller in bandwidth, since electromagnetic induction element group 1 passively obtains surrounding by electromagnetic induction
The energy that electromagnetic wave gives out in environment is less, can not directly charge to rechargeable battery, in order to realize storage energy and
It charges again to rechargeable battery when energy is sufficiently large, as a further improvement on the present invention scheme, this wireless charging device is also
Including capacitance 5, capacitance 5, which is arranged on, to be selected between wave rectifier cell group 2 and voltage stabilizing element group 4, the input terminal and voltage stabilizing element of capacitance 5
4 electrical connection of group, the output terminal of capacitance 5 is electrically connected with DC power output end 3 and the output terminal of capacitance 5 is equipped with charge switch
Circuit and charge protection circuit.Secondary charge and discharge can be realized by capacitance 5.
In order to ensure that capacitance 5 can store and export enough charging voltages, scheme as a further improvement on the present invention,
The capacitance 5 is set as more than one piece, and more than one piece capacitance 5 is connected in series with each other or is connected in parallel mutually or connection in series-parallel mixing connects
Composition capacitance group is connect, charge switch circuit and charge protection circuit are arranged on the output terminal of capacitance group.
Due to the electrical equipment under direct current electrical environment in working condition around can generate DC electric field, in order to make this wireless
Charging unit can absorb the energy of DC electric field, as a further improvement on the present invention scheme, the voltage stabilizing element group 4 with
Coupling cock is equipped between capacitance group.It, can be by the coupling cock of this wireless charging device when ambient enviroment has DC electric field
Closing makes electromagnetic induction element group 1, wave rectifier cell group 2, voltage stabilizing element group 4 and capacitance group is selected to be in this nothing after off state
Close to DC electric field, DC electric field can carry out capacitance group to be filled with charge micro USB electric installation.
A kind of embodiment of wave commutating circuit rectifying part is selected as the present invention, selects the rectifying part in wave commutating circuit
It is bridge rectifier circuit.
The electromagnetic wave that this wireless charging device is directed to is the non-electromagnetic wave actively emitted for charging, i.e. this electromagnetic wave is not
Electromagnetic wave that traditional wireless charger being connect with power supply is launched, that wireless charging is carried out for mobile terminal, but it is all
The electromagnetic wave of the various frequencies of generally existing in collarette border, as long as there are the sufficiently large electromagnetic wave of the bandwidth, this nothings for ambient enviroment
Micro USB electric installation can obtain the energy that the electromagnetic wave gives out by electromagnetic induction and passively, therefore can not be by traditional interior
The limitation of outdoor charging environment can be thus achieved simply by the presence of the electromagnetic wave and carry out wireless charging whenever and wherever possible；Due to being equipped with electricity
Hold 5, therefore storage energy is carried out through the electricity that wave rectifier cell group 2 exports is selected to enter capacitance 5, when the amount of charge of capacitance 5 reaches
During to setting charging requirement, capacitance 5 is to open charge switch circuit and charge protection circuit, and the charge in capacitance 5 exports, simultaneously
It charges through DC power output end 3 to rechargeable battery, realizes secondary charge and discharge；The DC power supply of this wireless charging device is defeated
Outlet 3 can directly connect with electronic product each including mobile terminal etc. and charge, can also be by this wireless charging device
Modularization implantation includes the inside of each electronic product such as mobile terminal and one realized with electronic product is connect with rechargeable battery
Body, especially suitable for charging to mobile terminal.
Claims (6)
1. a kind of wireless charging device, which is characterized in that including electromagnetic induction element group (1), select wave rectifier cell group (2) and straight
Galvanic electricity source output terminal (3) selects wave rectifier cell group (2) to be internally provided with and selects wave commutating circuit, and wave commutating circuit is selected to include rectification part
Divide and select wave part, select wave part that can select the higher wave band of frequency according to the stabilization bandwidth frequency of the electromagnetic wave passively obtained
It is filtered, wave rectifier cell group (2) is selected to include rectifier cell and filter element, electromagnetic induction element group (1) is with selecting wave rectification
Element group (2) is electrically connected, and wave rectifier cell group (2) is selected to be electrically connected with DC power output end (3), DC power output end (3)
It is electrically connected with rechargeable battery.
2. wireless charging device according to claim 1, which is characterized in that this wireless charging device further includes voltage stabilizing element
Group (4), voltage stabilizing element group (4) be arranged on select between wave rectifier cell group (2) and DC power output end (3) and respectively with choosing
Wave rectifier cell group (2) and DC power output end (3) electrical connection.
3. wireless charging device according to claim 2, which is characterized in that this wireless charging device further includes capacitance (5),
Capacitance (5) is arranged between voltage stabilizing element group (4) and DC power output end (3), input terminal and the voltage stabilizing element group of capacitance (5)
(4) it is electrically connected, the output terminal of capacitance (5) is electrically connected with DC power output end (3) and the output terminal of capacitance (5) is equipped with and fills
Electric switch circuit and charge protection circuit.
4. wireless charging device according to claim 3, which is characterized in that the capacitance (5) is set as more than one piece, more than one piece
Capacitance (5) be connected in series with each other or be connected in parallel mutually or connection in series-parallel Hybrid connections form capacitance group, charge switch return
Road and charge protection circuit are arranged on the output terminal of capacitance group.
5. wireless charging device according to claim 4, which is characterized in that the voltage stabilizing element group (4) and capacitance group
Between be equipped with coupling cock.
6. wireless charging device according to claim 4, which is characterized in that it is bridge to select the rectifying part in wave commutating circuit
Formula commutating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711475201.7A CN108233554A (en) | 2017-12-29 | 2017-12-29 | A kind of wireless charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711475201.7A CN108233554A (en) | 2017-12-29 | 2017-12-29 | A kind of wireless charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108233554A true CN108233554A (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711475201.7A Pending CN108233554A (en) | 2017-12-29 | 2017-12-29 | A kind of wireless charging device |
Country Status (1)
| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050186994A1 (en) * | 2000-09-27 | 2005-08-25 | Science Applications International Corporation | Method and system for energy reclamation and reuse |
| CN202103463U (en) * | 2011-07-04 | 2012-01-04 | 中国科学院沈阳自动化研究所 | Magnetic resonance wireless charging device |
| CN104600821A (en) * | 2015-02-16 | 2015-05-06 | 联想(北京)有限公司 | Electric field charger, power source device and electronic equipment charging method and system |
| CN106849379A (en) * | 2017-03-15 | 2017-06-13 | 南京邮电大学 | Electromagnetic energy based on wide-band and wave-absorbing device is collected, stored and electric supply installation |
| CN107302269A (en) * | 2017-07-17 | 2017-10-27 | 青岛海信移动通信技术股份有限公司 | A kind of Energy harvesting methods and its system |
-
2017
- 2017-12-29 CN CN201711475201.7A patent/CN108233554A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050186994A1 (en) * | 2000-09-27 | 2005-08-25 | Science Applications International Corporation | Method and system for energy reclamation and reuse |
| CN202103463U (en) * | 2011-07-04 | 2012-01-04 | 中国科学院沈阳自动化研究所 | Magnetic resonance wireless charging device |
| CN104600821A (en) * | 2015-02-16 | 2015-05-06 | 联想(北京)有限公司 | Electric field charger, power source device and electronic equipment charging method and system |
| CN106849379A (en) * | 2017-03-15 | 2017-06-13 | 南京邮电大学 | Electromagnetic energy based on wide-band and wave-absorbing device is collected, stored and electric supply installation |
| CN107302269A (en) * | 2017-07-17 | 2017-10-27 | 青岛海信移动通信技术股份有限公司 | A kind of Energy harvesting methods and its system |
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Application publication date: 20180629 |