KR101771806B1 - Wireless power charging device - Google Patents
Wireless power charging device Download PDFInfo
- Publication number
- KR101771806B1 KR101771806B1 KR1020150142029A KR20150142029A KR101771806B1 KR 101771806 B1 KR101771806 B1 KR 101771806B1 KR 1020150142029 A KR1020150142029 A KR 1020150142029A KR 20150142029 A KR20150142029 A KR 20150142029A KR 101771806 B1 KR101771806 B1 KR 101771806B1
- Authority
- KR
- South Korea
- Prior art keywords
- heat dissipation
- coil
- shielding sheet
- layer
- coil pattern
- Prior art date
Links
- 239000010410 layer Substances 0.000 claims description 59
- 230000017525 heat dissipation Effects 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 32
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000012790 adhesive layer Substances 0.000 claims description 13
- 230000005855 radiation Effects 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 25
- 229910021389 graphene Inorganic materials 0.000 description 24
- 239000000758 substrate Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 238000000707 layer-by-layer assembly Methods 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 229910001004 magnetic alloy Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002159 nanocrystal Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910001257 Nb alloy Inorganic materials 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910008423 Si—B Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- H02J7/025—
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
An embodiment of the present invention provides an electromagnetic wave shielding sheet and a coil portion, wherein the coil portion has a radiating layer disposed on the electromagnetic shielding sheet side.
Description
The present invention relates to a wireless charging device.
2. Description of the Related Art A non-contact type, that is, a wireless charging method that charges a battery using magnetic coupling without electrical contact has been attracting attention as electronic appliances become light in weight due to miniaturization and weight reduction of electronic appliances.
The wireless charging method is a method of charging by using electromagnetic induction. In this method, a primary coil (transmitting portion coil) is provided in a charger (wireless power transmitting device) and a secondary coil (receiving portion coil) is provided in a charging target (wireless power receiving device) And the current generated by inductive coupling between the primary coil and the secondary coil is converted into energy to charge the battery.
At this time, an electromagnetic wave shielding sheet is disposed between the receiver coil and the battery. The shielding sheet shields the magnetic field generated from the receiving coil from reaching the battery and efficiently transmits the electromagnetic wave generated from the wireless power transmission device to the wireless power receiving device.
When such an electromagnetic shielding sheet is used for wireless charging, power of several to several tens of watts may be continuously transmitted, resulting in loss of materials and circuits, resulting in a large amount of heat. Therefore, in the related art, researches on a method of efficiently discharging heat generated from the electromagnetic wave shielding sheet or its surroundings have been actively studied.
An object of the present invention is to provide a wireless charging device which is excellent in heat radiation performance and is advantageous in miniaturization.
In order to solve the above-mentioned problems, the present invention proposes a novel structure of a wireless charging device that has excellent heat dissipation performance and size efficiency through an embodiment. More specifically, the present invention proposes a novel structure of a wireless charging device including an electromagnetic wave shielding sheet and a coil portion, The coil portion is in the form of a heat dissipation layer disposed on the electromagnetic wave shielding sheet side.
In this case, the heat dissipation layer may include graphene having a high thermal conductivity, and the heat dissipation efficiency may be improved by being formed directly on the surface of a coil pattern or the like, not by an adhesive or the like.
In the case of the wireless charging apparatus proposed in one embodiment of the present invention, the heat dissipation characteristics can be remarkably improved by applying the heat dissipation layer between the coil portion and the electromagnetic shielding sheet, which is advantageous for improving the reliability of the electronic apparatus using the same. Further, by directly coating such a heat-radiating layer with a cover, a coil pattern, an electromagnetic wave shielding sheet, etc., heat radiation performance can be further improved and the size of the wireless charging device can be reduced.
1 is an external perspective view of a typical wireless charging system.
FIG. 2 is a cross-sectional view of the main internal structure of FIG. 1; FIG.
3 is a cross-sectional view schematically showing a configuration of a coil portion and an electromagnetic wave shielding sheet which can be employed in an embodiment of the present invention.
Fig. 4 is a modification of Fig.
5 and 6 are cross-sectional views schematically showing configurations of a coil portion and an electromagnetic wave shielding sheet which can be employed in another embodiment of the present invention.
7 is a cross-sectional view schematically showing a part of a manufacturing process of a wireless charging device that can be employed in an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described with reference to specific embodiments and the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided for a more complete description of the present invention to the ordinary artisan. Accordingly, the shapes and sizes of the elements in the drawings may be exaggerated for clarity of description, and the elements denoted by the same reference numerals in the drawings are the same elements.
It is to be understood that, although the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Will be described using the symbols. Further, throughout the specification, when an element is referred to as "including" an element, it means that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.
FIG. 1 is an external perspective view schematically showing a general wireless charging system, and FIG. 2 is a cross-sectional view explaining a main internal configuration of FIG.
1 and 2, a typical wireless charging system may include an electronic device wireless
In the inside of the wireless
The
The
An electromagnetic
The electromagnetic
The configuration of the coil portion and the electromagnetic wave shielding sheet included in the receiver will be described in detail with reference to FIG. 3. As described above, such a configuration may also be employed in the transmitter. 3, the wireless charging device includes an electromagnetic
The electromagnetic
Next, when using a nanocrystalline alloy, for example, an Fe-based nano-crystal magnetic alloy can be used. The Fe-based nano-crystal alloy can be Fe-Si-B-Cu-Nb alloy.
On the other hand, the electromagnetic
Further, the electromagnetic
Next, the configuration of the
The
In the present embodiment, the
In the case of the graphene included in the
4, the
Although not shown in FIG. 4, a structure in which the
The step of forming a coating layer on the surfaces of the electromagnetic
The spin coating is a method of dropping a predetermined amount of graphene oxide solution on a substrate and coating the substrate with a centrifugal force applied to the solution by rotating the substrate, that is, the coating object (the magnetic layer in this embodiment) at high speed.
The spray coating method is a coating method for spraying a graphene oxide solution onto a substrate. It is easy to coat a large area substrate, and the process itself is quick and simple. However, before the solution is sprayed from the nozzle to reach the substrate, So that the total area of the film may not be uniform.
Vacuum filtration is a coating method in which a graphene oxide solution is filtered using a microfilter to form a film of graphene oxide fragments that are filtered on the microfilter paper to obtain a uniformly coated film and to control the thickness of the film It is easy. However, the consumption of the graphene oxide solution used is high, and the time required may take a relatively long time.
The Langmuir-Blagget assembly method is a coating method in which graphene oxide pieces are self-assembled onto a substrate by vertically immersing the substrate in a solution in which graphene oxides are arranged on the surface, and slowly lifting the substrate at a constant speed. Although the Langmuir-Blagget method can obtain a relatively uniform film, the process takes a long time, and it may be difficult to coat a large-area substrate.
Layer-by-layer assembly (LBL) is a coating method in which a film is assembled using electrostatic attraction by applying different surface charges to graphene pieces. In the case of the LBL assembly method, a graphene oxide solution having a positive charge and a graphene oxide solution having a negative charge are each prepared by attaching a functional group to a graphene piece, and the graphene oxide pieces are stacked one by one by immersing the substrate in the two solutions alternately . The LBL assembly method is good in operability but requires a pretreatment step of attaching a functional group to graphene pieces, and the amount of graphene oxide solution required for the process and the time required may be large.
Another embodiment of the present invention will be described with reference to Figs. 5 includes an electromagnetic
5, the
6, the
5 and 6, the
An example of a method of making the structures shown in Figs. 5 and 6 will be described with reference to Fig. First, in the case of the structure of Fig. 6, a
As another method, a method of forming the
On the other hand, in the above-described example, the electromagnetic wave shielding sheet is applied to the receiving portion of the wireless charging device, but the electromagnetic wave shielding sheet may also be applied to the transmitting portion of the wireless charging device.
The present invention is not limited to the above-described embodiments and the accompanying drawings, but is intended to be limited only by the appended claims. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.
10: Wireless power transmission device
11: Transmission coil
20: Wireless power receiving device
21: Receiver coil (coil part)
22: Battery
30: Electronic device
100: electromagnetic wave shielding sheet
101, 201: heat radiating layer
102, 103, 201, 202, 203, 204:
104: Lower cover
105, 205: coil pattern
106: upper cover
206: Cover layer
207: Carrier
Claims (14)
Wherein the coil portion includes a coil pattern and a heat radiation layer disposed on the electromagnetic wave shielding sheet side,
The heat dissipation layer and the coil pattern are disposed between and supported by the first and second adhesive layers,
Wherein the heat dissipation layer and the coil pattern are embedded in the first and second adhesive layers.
Wherein the coil portion includes upper and lower covers, and the coil pattern is disposed between the upper and lower covers.
Wherein the heat dissipation layer is bonded to the lower cover by an adhesive.
Wherein the upper cover, the lower cover, and the coil pattern form a flexible circuit board structure.
Wherein the heat dissipation layer has a shape corresponding to the coil pattern.
Wherein the heat dissipation layer is bonded to the coil pattern by an adhesive.
Wherein the heat dissipation layer is directly coupled to the coil pattern.
Wherein the heat dissipation layer is coated directly on the surface of the coil pattern.
Wherein the electromagnetic shielding sheet is bonded to the first adhesive layer.
And a cover layer coupled to the second adhesive layer.
Wherein the heat dissipation layer is bonded to the electromagnetic wave shielding sheet by an adhesive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/173,831 US9960630B2 (en) | 2015-08-06 | 2016-06-06 | Wireless power charging device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150111245 | 2015-08-06 | ||
KR20150111245 | 2015-08-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20170017674A KR20170017674A (en) | 2017-02-15 |
KR101771806B1 true KR101771806B1 (en) | 2017-08-25 |
Family
ID=58112075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150142029A KR101771806B1 (en) | 2015-08-06 | 2015-10-12 | Wireless power charging device |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101771806B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114123549A (en) * | 2021-11-25 | 2022-03-01 | 东莞利富高塑料制品有限公司 | Double-circuit independent wireless charging system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007128977A (en) * | 2005-11-01 | 2007-05-24 | Dainippon Printing Co Ltd | Noncontact feeder system |
-
2015
- 2015-10-12 KR KR1020150142029A patent/KR101771806B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007128977A (en) * | 2005-11-01 | 2007-05-24 | Dainippon Printing Co Ltd | Noncontact feeder system |
Also Published As
Publication number | Publication date |
---|---|
KR20170017674A (en) | 2017-02-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9960630B2 (en) | Wireless power charging device | |
US9355766B2 (en) | Coil for cordless charging and cordless charging apparatus using the same | |
US9929599B2 (en) | Sheet for shielding against electromagnetic waves and wireless power charging device | |
CN108184333A (en) | Modular antenna module | |
CN106170196B (en) | Sheet for shielding electromagnetic wave and wireless charging device | |
CN104011814A (en) | Magnetic field shielding sheet for a wireless charger, method for manufacturing same, and receiving apparatus for a wireless charger using the sheet | |
US20140176282A1 (en) | Electromagnetic induction module for wireless charging element and method of manufacturing the same | |
KR102506374B1 (en) | wireless power transmission device | |
WO2015115789A1 (en) | Wireless charging substrate and device | |
US20210044019A1 (en) | Antenna module comprising shield layer and wireless power receiving device | |
CN108140951A (en) | Car antenna module | |
KR102085646B1 (en) | wireless power transmission device | |
US9955614B2 (en) | Sheet for shielding against electromagnetic waves and wireless power charging device | |
KR101489391B1 (en) | Soft magnetism sheet | |
JP2022003864A (en) | Wireless power transmission apparatus for vehicle | |
JP2014036116A (en) | Receiver for non-contact power supply | |
KR101823206B1 (en) | Sheet for shielding electromagnetic wave and wireless power charging device | |
US20140176281A1 (en) | Electromagnetic induction module for wireless charging element and method of manufacturing the same | |
KR101771806B1 (en) | Wireless power charging device | |
KR102315813B1 (en) | Heat dissipation member for reception device module of wireless power charger, Reception device module of wireless power charger containing the same and Reception device of wireless power charger containing the same | |
KR20170053272A (en) | Magnetic Sheet and Wireless Power Charging Device | |
KR20150082895A (en) | Soft magnetic substrate | |
KR20180036202A (en) | Magnetic Sheet and Electronic Device | |
KR101994746B1 (en) | Sheet for shielding electromagnetic wave and wireless power charging device | |
KR101813367B1 (en) | Magnetic Sheet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant |