CN108400644A - A kind of electric energy reception device and flexible display screen - Google Patents
A kind of electric energy reception device and flexible display screen Download PDFInfo
- Publication number
- CN108400644A CN108400644A CN201810195902.3A CN201810195902A CN108400644A CN 108400644 A CN108400644 A CN 108400644A CN 201810195902 A CN201810195902 A CN 201810195902A CN 108400644 A CN108400644 A CN 108400644A
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- capacitance
- electric energy
- reception device
- energy reception
- coil
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- 239000003990 capacitor Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 10
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- H02J7/025—
-
- H02J5/005—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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)
Abstract
The present invention provides a kind of electric energy reception devices, are used for wireless charging system, solve the problems, such as charge efficiency reduction when the flexible display screen with wireless charging function occurs bending and deformation in the prior art.The electric energy reception device includes：First coil is coupled with the second coil of the power output device of wireless charging system, to charge to rechargeable battery；It with capacitance adjustment unit, is electrically connected with first coil, the variation for adapting to the inductance value of first coil by adjusting capacitance, the resonant frequency to ensure electric energy reception device and power output device is equal.
Description
Technical field
The present invention relates to wireless charging technical fields, and in particular to a kind of electric energy reception device and flexible display screen.
Background technology
The flexible display screen with wireless charging function once occurs bending and deformation in the prior art, internal wireless charging
Electric coil can also occur bending and deformation therewith so that the inductance value of Wireless charging coil changes, and thus causes flexibility
The resonant frequency of the included radio energy reception device of display screen and the resonant frequency of external radio energy output device are no longer
It is equal, so that the wireless charging efficiency of flexible screen is substantially reduced.
Invention content
In view of this, the embodiment of the present invention is dedicated to providing a kind of electric energy reception device and flexible display screen, it is existing to solve
The problem of wireless charging efficiency reduces when having the flexible display screen in technology to occur bending and deformation.
One aspect of the present invention provides a kind of electric energy reception device, is used for wireless charging system, including：First coil, with
Second coil of the power output device of wireless charging system couples, to charge to rechargeable battery；With capacitance adjustment unit,
It is electrically connected with first coil, the variation for adapting to the inductance value of first coil by adjusting capacitance, to ensure that electric energy connects
The resonant frequency of receiving apparatus and power output device matches.
Optionally, the capacitance of capacitance adjustment unit output is adjusted to so that the current value in first coil is maximum.
Optionally, capacitance adjustment unit includes adjustable condenser, current sensor and controller, wherein controller is used for
The current value that current sensor detects is compared when adjustable condenser exports different capacitances, and controls adjustable electric
Corresponding capacitance when container output current value maximum.
Optionally, adjustable condenser includes multiple capacitances, and the multiple capacitance is parallel with one another.
Optionally, the capacitance of multiple capacitances is different, and controller is specifically used for scanning multiple capacitances one by one, in adjustable electric
The current value uploaded to current sensor when container exports different capacitances is compared, select current value maximum when corresponding one
A capacitors conductive.
Optionally, controller is specifically used for being scanned the various arrangement combination of multiple capacitances, on current sensor
The current value of biography is compared, and corresponding permutation and combination when current value maximum is selected to be connected.
Optionally, the capacitance of multiple capacitances is different.
Optionally, adjustable condenser includes three capacitances, and three capacitances include six kinds of permutation and combination.
Optionally, the time interval of scanning process is 2 seconds.
Optionally, adjustable condenser includes patch adjustable condenser and plug-in unit adjustable condenser.
Optionally, electric energy reception device further comprises the rectifying and voltage-stabilizing being electrically connected with first coil, capacitance adjustment unit
Circuit.
Another aspect of the present invention additionally provides a kind of flexible display screen, including above-mentioned electric energy reception device, and electric energy receives dress
The first coil set is arranged on the display panel of flexible display screen；And rechargeable battery, it is electrically connected with electric energy reception device.
According to electric energy reception device provided by the invention and flexible display screen, by the way that adjustable condenser is arranged, when electric energy connects
When the inductance value of coil in receiving apparatus changes, electric energy can be ensured by adjusting the output capacitance value of adjustable condenser
Remain that resonance couples between reception device and power output device, to realize electric energy reception device always with maximum power
Carry out power transmission.When the electric energy reception device is used for flexible display screen, which is adapted to due to soft
Property display screen bending generate coil inductance value variation, it is ensured that flexible display screen always with maximum power carry out wireless charging
Electricity improves the flexibility of the wireless charging function of flexible display screen.
Description of the drawings
Fig. 1 show a kind of configuration diagram of wireless charging system of one embodiment of the invention offer.
Fig. 2 a show the film layer knot of the flexible display panels with wireless charging function of one embodiment of the invention offer
Structure schematic diagram.
Fig. 2 b show the schematic diagram of display screen made of the flexible display panels shown in Fig. 2 a.
Fig. 2 c show partial structural diagram when flexible display screen shown in Fig. 2 b occurs bending and deformation.
Fig. 3 show a kind of structure diagram of electric energy reception device of one embodiment of the invention offer.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Fig. 1 show a kind of configuration diagram of wireless charging system of one embodiment of the invention offer.It can be with from figure
Find out, which includes the power output device 20 to be intercoupled by coil and electric energy reception device 10.Wherein,
Power output device 20 includes the power supply 21 being sequentially connected electrically, inverter circuit 22, transmitting coil 24 and transmitting capacitance 23, and electric energy connects
Receiving apparatus 10 includes the receiving coil 11 being sequentially connected electrically, receives capacitance 12, regulator rectifier circuit 13 and battery to be charged 14, hair
The coupling of ray circle 24 and receiving coil 11 realizes the transmission of the electric energy between power output device 20 and electric energy reception device 10.
Wireless charging system as shown in Figure 1 realizes that the principle of wireless charging is：Transmitting coil 24 converts electrical signals to
Electromagnetic signal, and electromagnetic signal emitting is given into the receiving coil 11 that transmitting coil 24 is coupled, receiving coil 11 receives the electricity
Magnetic signal is simultaneously translated into electric signal, to realize that the electric energy between power output device 20 and electric energy reception device 10 passes
It passs.
In above-mentioned radio energy transmittance process, in order to realize the maximization of system transimission power, i.e. electric energy reception device
Induced current in 10 is maximum, it is required that resonance coupling occurs between transmitting coil 24 and receiving coil 11, this requires hairs
The resonant frequency in resonant frequency and receiving coil 11 in ray circle 24 is equal, according to formulaIt is found that L1C1
=L2C2, wherein L1For the inductance value of transmitting coil 24；C1To emit the capacitance of capacitance 23；L2For the inductance of receiving coil 11
Value；C2To receive the capacitance of capacitance 12.
Fig. 2 a show the film layer knot of the flexible display panels with wireless charging function of one embodiment of the invention offer
Structure schematic diagram.Fig. 2 b show the schematic diagram of display screen made of the flexible display panels shown in Fig. 2 a.Fig. 2 c show Fig. 2 b
Partial structural diagram when shown flexible display screen occurs bending and deformation.It can be seen that in conjunction with Fig. 2 a and Fig. 2 b for having
For the flexible display screen 50 of wireless charging function, the receiving coil 11 in electric energy reception device 10 in flexible display panels 30
It is normally located in the film layer structure of flexible display panels 30, the film layer structure of the flexible display panels 30 specifically includes
(one layer or more of substrate 31, Kapton 32, the first metal layer 33, water oxygen barrier layer 34 being sequentially stacked from top to bottom
Layer), second metal layer 35 and display module 36, wherein the first metal layer 33 be used to form receiving coil 11 and draw reception line
Terminal outside circle 11, i.e. first terminal a, second metal layer 35 are used to draw the Second terminal b of receiving coil 11, specifically
Such as can be by punched in water oxygen barrier layer 34, by the end inside the receiving coil 11 in the first metal layer 33
Sub- c is drawn out to second metal layer 35 by via and forms Second terminal b.
In this case, as shown in Figure 2 c, when flexible display screen 50 bends, it is set in flexible display panels 30
Receiving coil 11 can also bend so that the inductance value L of receiving coil 112It changes, then equation L1C1=L2C2It will
It no longer sets up, destroys the resonance coupling between transmitting coil 24 and receiving coil 11, lead to the wireless charging of flexible display screen 50
Electrical power reduces, or even can not carry out wireless charging.
Fig. 3 show a kind of structure diagram of electric energy reception device of one embodiment of the invention offer.The electric energy receives dress
It sets and can be used for wireless charging system, it can be seen from the figure that the electric energy reception device 40 includes the first coil 41 of electrical connection
(i.e. receiving coil) and capacitance adjustment unit 42, wherein first coil and second of the power output device in wireless charging system
Coil (i.e. transmitting coil) couples, to charge to rechargeable battery；Capacitance adjustment unit 42 is electrically connected with first coil 41, is used
In adapting to the variation of the inductance value of first coil by adjusting capacitance, to ensure electric energy reception device and power output device
Resonant frequency match.
It will be understood by those skilled in the art that electric energy reception device and the resonant frequency of power output device match refers to
Electric energy reception device and the resonant frequency of power output device are equal in theory, can also be in the error range of permission
Approximately equal.
Charging current maximum be characterize electric energy reception device and power output device resonant frequency equal one it is important
Index, therefore, in one embodiment, the capacitance that capacitance adjustment unit 42 exports is adjusted to so that in first coil 41
Current value is maximum.
The electric energy reception device 40 provided according to embodiments of the present invention, by the way that capacitance adjustment unit 42 is arranged, when electric energy connects
It, can be by adjusting the output capacitance of capacitance adjustment unit 42 when the inductance value of first coil 41 in receiving apparatus 40 changes
Value ensures the relational expression L between electric energy reception device and power output device1C1=L2C2Perseverance is set up, to realize wireless charging
Electric system carries out electric energy transmission with maximum power always.
In one embodiment, capacitance adjustment unit 42 includes adjustable condenser 421, current sensor 422 and controller
423.Its course of work includes：Controller 423 controls adjustable condenser 421 and exports adjustable electric capacitance, current sensor 422 one by one
It is detected to flowing through the current value in first coil 41 during this, and the current value detected is uploaded to controller 423,
Controller 423 is compared the current value received, obtains a maximum current value, and it is defeated then to control adjustable condenser 421
Go out the corresponding capacitance of the maximum current value, i.e. target capacitance value.
As it can be seen that being used for when adjustable condenser 421 exports different capacitances pair according to the controller 423 in the present embodiment
The current value that current sensor 422 uploads is compared, and controls corresponding capacitance when 421 output current value maximum of adjustable condenser
Value；Current value is uploaded to controller 423 by current sensor 422 for monitoring the current value in coil 41 in real time.
In one embodiment, the trace interval of controller 423 is 2 seconds, 3 seconds, the arbitrary preset duration such as 4 seconds.This
In trace interval refer to that often persistently output target capacitance value carries out single pass in 2 seconds to adjustable condenser 421.
In one embodiment, adjustable condenser 421 includes multiple capacitances, and multiple capacitance is parallel with one another.
In this case, the specific implementation procedure of controller 423 includes two kinds：The first is the capacitance when multiple capacitances
When different, for being scanned one by one to multiple capacitances, the current value uploaded to current sensor 422 is compared, and selects current value
Corresponding capacitors conductive when maximum；Second is when the capacitance of multiple capacitances is identical or different, for multiple electricity
The various arrangement combination of appearance is scanned, and the current value uploaded to current sensor 422 is compared, when selecting current value maximum
Corresponding permutation and combination conducting.
For second of implementation procedure, by taking adjustable condenser 421 includes three capacitances as an example, such as three capacitance difference
For capacitance C1, capacitance C2, capacitance C3, according to permutation and combination principle it is found that three capacitances include six kinds of permutation and combination, i.e. capacitance
C1, capacitance C2, capacitance C3, capacitance C1 and capacitance C2, capacitance C1 and capacitance C2 and capacitance C3, capacitance C2 and capacitance C3.
In this case, controller 423 for gating capacitance C1, capacitance C2, capacitance C3, capacitance C1 and capacitance C2 successively,
Then capacitance C1 and capacitance C2 and capacitance C3, capacitance C2 and capacitance C3 will be detected during six gatings by current sensor 422
To six current values be compared, corresponding permutation and combination conducting when selecting current value maximum.Three given here
The scanning sequency of six kinds of permutation and combination of capacitance is only exemplary, can be taking human as selection during concrete application.
For second of implementation procedure of controller, the different situation of capacitance of multiple capacitors and multiple capacitances
The situation that the capacitance of device is identical is compared, and adjustable condenser 421 can export more kinds of capacitances.
For example, still by taking adjustable condenser 421 includes tri- capacitance C1, capacitance C2, capacitance C3 capacitances as an example, when three electricity
When the capacitance difference of appearance, such as respectively 1F, 2F, 3F, then the six of three capacitances kind permutation and combination (capacitance C1, capacitance C2,
Capacitance C3, capacitance C1 and capacitance C2, capacitance C1 and capacitance C2 and capacitance C3, capacitance C2 and capacitance C3) corresponding adjustable condenser
421 output capacitance value is followed successively by 1F, 2F, 3F, 1F//2F, 1F//2F//3F, (wherein " // " represents capacitance and online to 2F//3F
It calculates, specific formula for calculation is)；And when the capacitance phase of three capacitances simultaneously as gate respectively
The capacitance exported when capacitance C1, capacitance C2, capacitance C3 is equal, gates capacitance C1 and capacitance C2, capacitance C2 and capacitance C3 respectively
When capacitance it is also equal, therefore adjustable condenser 421 can only export three kinds of capacitances.
Adjustable condenser 421 in the electric energy reception device provided according to embodiments of the present invention utilizes multiple electricity in addition to above-mentioned
Hold the form parallel with one another being composed, can also directly utilize the tunable capacitor Encapsulation Moulds itself with capacitance adjustment function
Block, including patch tunable capacitor and plug-in unit tunable capacitor, this itself has the tunable capacitor package module packet of capacitance adjustment function
Upper and lower two layers of movable electrode is included, there are certain thickness air-gaps between upper layer movable electrode and lower layer's movable electrode, by upper
Spacing between layer movable electrode or two layers of electrode of mobile change of lower layer's movable electrode, to realize capacitance adjustment function.
In one embodiment, electric energy reception device 40 as shown in Figure 3 further comprises regulator rectifier circuit 43.
The present invention also provides a kind of flexible display screens, including the electric energy reception device that any of the above-described embodiment provides, electricity
First coil in energy reception device is arranged on the display panel of flexible display screen；And rechargeable battery, it receives and fills with electric energy
Set electrical connection.
According to flexible display screen provided by the invention, it is adapted to the first coil generated due to the bending of flexible display screen
Inductance value variation, it is ensured that flexible display screen always with maximum power carry out wireless charging, improve the nothing of flexible display screen
The flexibility of micro USB Electricity Functional.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Within god and principle, made by any modification, equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of electric energy reception device is used for wireless charging system, which is characterized in that including：
First coil is coupled with the second coil of the power output device of the wireless charging system, to be carried out to rechargeable battery
Charging；With
Capacitance adjustment unit is electrically connected with the first coil, for adapting to the first coil by adjusting capacitance
The variation of inductance value, to ensure that the resonant frequency of the electric energy reception device and the power output device matches.
2. electric energy reception device as described in claim 1, which is characterized in that the capacitance quilt of the capacitance adjustment unit output
It is adjusted so that the current value in the first coil is maximum.
3. electric energy reception device as claimed in claim 2, which is characterized in that the capacitance adjustment unit includes tunable capacitor
Device, current sensor and controller, wherein
What the controller was used to detect the current sensor when the adjustable condenser exports different capacitances
Current value is compared, and is controlled the adjustable condenser and exported corresponding capacitance when the current value maximum.
4. electric energy reception device as claimed in claim 3, which is characterized in that the adjustable condenser includes multiple capacitances, institute
It is parallel with one another to state multiple capacitances.
5. electric energy reception device as claimed in claim 4, which is characterized in that the capacitance of the multiple capacitance is different, described
Controller is specifically used for scanning the multiple capacitance one by one, when the adjustable condenser exports different capacitances to described
The current value that current sensor detects is compared, and while selecting current value maximum corresponding capacitors conductive.
6. electric energy reception device as claimed in claim 4, which is characterized in that the controller is specifically used for the multiple electricity
The various arrangement combination of appearance is scanned, and the current value uploaded to the current sensor is compared, and selects current value maximum
When the conducting of a corresponding permutation and combination.
7. electric energy reception device as claimed in claim 6, which is characterized in that the capacitance of the multiple capacitance is different.
8. electric energy reception device as claimed in claim 3, which is characterized in that the adjustable condenser includes patch tunable capacitor
Device and plug-in unit adjustable condenser.
9. such as electric energy reception device according to any one of claims 1-8, which is characterized in that further comprise and the First Line
The regulator rectifier circuit that circle, the capacitance adjustment unit are electrically connected.
10. a kind of flexible display screen, which is characterized in that including：
Any electric energy reception device in claim 1-9, the first coil in the electric energy reception device are arranged in institute
It states on the display panel of flexible display screen；And
Rechargeable battery is electrically connected with the electric energy reception device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195902.3A CN108400644A (en) | 2018-03-09 | 2018-03-09 | A kind of electric energy reception device and flexible display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195902.3A CN108400644A (en) | 2018-03-09 | 2018-03-09 | A kind of electric energy reception device and flexible display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108400644A true CN108400644A (en) | 2018-08-14 |
Family
ID=63092684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810195902.3A Pending CN108400644A (en) | 2018-03-09 | 2018-03-09 | A kind of electric energy reception device and flexible display screen |
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| Country | Link |
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|---|---|---|---|---|
| CN203521617U (en) * | 2013-07-31 | 2014-04-02 | 陈业军 | Flexible wearable near-field communication and wireless charging antenna and terminal |
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| CN104218652A (en) * | 2013-09-19 | 2014-12-17 | 郭和友 | Wireless charging power supply OLED soft screen network electronic device |
| CN106131251A (en) * | 2016-07-08 | 2016-11-16 | 广东欧珀移动通信有限公司 | Flexible screen supporting construction, flexible display screen module and mobile terminal |
| CN106208397A (en) * | 2015-04-30 | 2016-12-07 | 介面光电股份有限公司 | Film coil element and applicable flexible radio charging device thereof and system |
| CN106300699A (en) * | 2016-09-18 | 2017-01-04 | 青岛海信电器股份有限公司 | Wireless charging receiver, wireless charging system and charge control method thereof |
| CN106300686A (en) * | 2015-06-02 | 2017-01-04 | 介面光电股份有限公司 | Wireless charging device |
| CN107426360A (en) * | 2017-06-09 | 2017-12-01 | 禾邦电子(苏州)有限公司 | A kind of electric terminal |
-
2018
- 2018-03-09 CN CN201810195902.3A patent/CN108400644A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203521617U (en) * | 2013-07-31 | 2014-04-02 | 陈业军 | Flexible wearable near-field communication and wireless charging antenna and terminal |
| CN104218652A (en) * | 2013-09-19 | 2014-12-17 | 郭和友 | Wireless charging power supply OLED soft screen network electronic device |
| CN103995614A (en) * | 2014-05-26 | 2014-08-20 | 中国联合网络通信集团有限公司 | Touch screen and terminal equipment |
| CN106208397A (en) * | 2015-04-30 | 2016-12-07 | 介面光电股份有限公司 | Film coil element and applicable flexible radio charging device thereof and system |
| CN106300686A (en) * | 2015-06-02 | 2017-01-04 | 介面光电股份有限公司 | Wireless charging device |
| CN106131251A (en) * | 2016-07-08 | 2016-11-16 | 广东欧珀移动通信有限公司 | Flexible screen supporting construction, flexible display screen module and mobile terminal |
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Application publication date: 20180814 |