WO2018230991A1 - 차량용 무선전력 송신장치 - Google Patents
차량용 무선전력 송신장치 Download PDFInfo
- Publication number
- WO2018230991A1 WO2018230991A1 PCT/KR2018/006760 KR2018006760W WO2018230991A1 WO 2018230991 A1 WO2018230991 A1 WO 2018230991A1 KR 2018006760 W KR2018006760 W KR 2018006760W WO 2018230991 A1 WO2018230991 A1 WO 2018230991A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless power
- power transmission
- antenna
- transmission antenna
- wireless
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 137
- 238000004891 communication Methods 0.000 claims abstract description 84
- 230000017525 heat dissipation Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910018605 Ni—Zn Inorganic materials 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001646 magnetic resonance method Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- 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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
-
- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/03—Constructional details, e.g. casings, housings
- H04B1/036—Cooling arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
Definitions
- the present invention relates to a wireless power transmission technology, and more particularly to a wireless power transmission device for a vehicle capable of both data communication and wireless charging.
- the electronic device may be a mobile terminal such as a mobile phone, a smartphone, a tablet PC, a notebook computer, a digital broadcasting terminal, a PDA, a PMP, and a navigation device.
- a mobile terminal such as a mobile phone, a smartphone, a tablet PC, a notebook computer, a digital broadcasting terminal, a PDA, a PMP, and a navigation device.
- the user frequently charges the battery of the electronic device in order to continuously use the electronic device even in a dynamic space such as a vehicle. Accordingly, a non-contact type charging system capable of charging the battery through wirelessly transmitted power so as to easily charge the battery of the electronic device in a vehicle has been proposed.
- the electronic device is capable of various additional functions such as data transmission through near field communication (NFC) along with a wireless charging function. Accordingly, the user can easily check the information of the vehicle through the electronic device after receiving various information of the vehicle to the portable device using the near field communication function.
- NFC near field communication
- the wireless power transmitter for a vehicle applied to a vehicle needs to smoothly perform data communication for data transmission and reception together with power transmission for charging a battery of an electronic device.
- a vehicle wireless power transmitter applied to a vehicle is required to a method that can smoothly perform data communication without reducing the charging efficiency.
- the present invention has been made in view of the above, even if both the wireless communication antenna for wireless communication and the wireless power transmission antenna for wireless charging is provided with a wireless power transmission for a vehicle that can prevent the wireless charging efficiency is lowered
- the purpose is to provide a device.
- the present invention provides a magnetic shielding sheet; At least one antenna for wireless power transmission directly attached to one surface of the magnetic shielding sheet; And at least one antenna for wireless communication disposed on the same plane as the antenna for transmitting wireless power.
- the wireless power transmission antenna may include a first wireless power transmission antenna and a second wireless power transmission antenna provided with a flat coil having a hollow portion, and the first wireless power transmission antenna and The second wireless power transmission antenna may be disposed on the same plane.
- the wireless communication antenna may be disposed on the hollow side of the wireless power transmission antenna or may be arranged to surround the outside of the wireless power transmission antenna.
- the antenna for wireless communication may be a flat coil in which a conductive member is wound a plurality of times, or an antenna pattern formed on one surface of a circuit board.
- the magnetic shielding sheet may include any one of an amorphous ribbon sheet, a ferrite sheet and a polymer sheet.
- the magnetic field shielding sheet may be a Ni—Zn ferrite sheet.
- the vehicle wireless power transmitter may further include a plate-shaped heat dissipation plate disposed on one surface of the magnetic field shielding sheet.
- the heat dissipation plate may be any one of a plate-shaped copper plate, an aluminum plate and a graphite sheet.
- the wireless power transmitter for a vehicle includes at least one circuit board electrically connected to the wireless power transmission antenna and the wireless communication antenna and a heat dissipation so that the circuit board is embedded and dissipates heat generated from a heat source. It may further include a housing.
- both data communication and wireless charging can be performed smoothly while preventing the wireless charging efficiency from decreasing.
- FIG. 1 is a view showing a wireless power transmission device for a vehicle according to an embodiment of the present invention
- FIG. 2 is a view illustrating a state in which the third wireless power transmission antenna is separated from FIG. 1;
- FIG. 3 is a diagram illustrating an arrangement relationship between another type of antenna for wireless communication and an antenna for wireless power transmission, which may be applied to FIG. 1;
- FIG. 3 is a diagram illustrating an arrangement relationship between another type of antenna for wireless communication and an antenna for wireless power transmission, which may be applied to FIG. 1;
- FIG. 4 is a view illustrating a state in which a third wireless power transmission antenna is separated from FIG. 3;
- FIG. 5 is a diagram illustrating an arrangement relationship between another type of antenna for wireless communication and an antenna for wireless power transmission that may be applied to FIG. 1;
- FIG. 6 is a view illustrating a heat radiation plate applied to FIG. 1;
- FIG. 7 is a view illustrating a heat radiation plate and a housing applied to FIG. 1;
- FIG. 8 is an exploded view of FIG. 7.
- the wireless power transmitter 100 for a vehicle may be installed or installed in a vehicle interior.
- the wireless power transmitter 100 for a vehicle may transmit wireless power to a wireless power receiving module built in the electronic device when an electronic device such as a smartphone is in close proximity. Through this, the electronic device may be charged with a battery.
- the electronic device may be a portable electronic device such as a mobile phone, a PDA, a PMP, a tablet, a multimedia device, or the like.
- the vehicular wireless power transmitter 100 includes an antenna unit and a magnetic shielding sheet 120 as shown in FIGS. 1 to 8.
- the antenna unit may perform various functions in a wireless manner by using a predetermined frequency band.
- the antenna unit may include a plurality of antennas, the plurality of antennas may perform different functions. That is, the plurality of antennas may perform various functions such as data communication or wireless power transmission.
- the antenna unit may include wireless power transmission antennas 111, 112, and 113 for transmitting wireless power to the wireless power receiving module, and wireless communication antennas 114 and 214 for data communication.
- the antenna may be a flat coil in which a conductive member having a predetermined length is wound a plurality of times in a clockwise or counterclockwise direction
- the flat coil may be any of circular, elliptical, square, and combinations thereof. It may be one shape.
- the antenna may be an antenna pattern in which a conductor such as copper foil is patterned in a loop shape on one surface of a circuit board, or an antenna pattern patterned in a predetermined loop shape through conductive ink.
- the circuit board may be a flexible circuit board made of a material such as PI, PET or the like, or may be a rigid circuit board made of a material such as FR4.
- the wireless power transmitting antennas 111, 112, and 113 may wirelessly transmit power through an inductive coupling method or a magnetic resonance method based on an electromagnetic induction phenomenon.
- the wireless power transmission antenna (111, 112, 113) may be an antenna of the Qi standard or PMA standard operating in a magnetic induction method in the frequency band of 100 ⁇ 350kHz, an antenna of the A4WP standard operating in a magnetic resonance method at 6.78MHz
- at least two of the Qi standard, the PMA standard, and the A4WP standard may be combined with each other.
- the wireless communication antenna 114 may be an NFC antenna, the NFC antenna may be transmitted and received data using a frequency band of 13.56MHz.
- the wireless power transmission antennas 111, 112, and 113 may be provided in plurality, and at least some of them may be arranged to overlap each other.
- the wireless power transmission antenna may include a first wireless power transmission antenna 111, a second wireless power transmission antenna 112 and a third wireless power transmission antenna 113, three Any one of the wireless power transmission antennas of the wireless power transmission antennas 111, 112, and 113 may be disposed to partially overlap the other two wireless power transmission antennas.
- the first wireless power transmission antenna 111, the second wireless power transmission antenna 112 and the third wireless power transmission antenna 113 may be a flat coil having a hollow portion in the center,
- the third wireless power transmission antenna 113 may be stacked to partially overlap the first wireless power transmission antenna 111 and the second wireless power transmission antenna 112.
- the vehicle wireless power transmitter 100 may include at least two wireless power transmission antennas 111 and 112 in which the wireless power transmission antennas are disposed on the same surface.
- the vehicle wireless power transmitter 100 according to an embodiment of the present invention is at least one wireless power transmission antenna 113 stacked on the upper side of the two wireless power transmission antennas 111 and 112 disposed on the same surface. ) May be included.
- the two wireless power transmission antennas disposed on the same surface are referred to as a first wireless power transmission antenna 111 and a second wireless power transmission antenna 112, and the first wireless power transmission antenna
- the wireless power transmission antenna stacked on one surface of the antenna 111 and the second wireless power transmission antenna 112 will be referred to as a third wireless power transmission antenna 113.
- the arrangement relationship of the wireless power transmitting antenna is not limited thereto, and the first wireless power transmitting antenna 111, the second wireless power transmitting antenna 112, and the third wireless constituting the wireless power transmitting antenna are not limited thereto.
- the upper and lower placement relations and the total number of uses of the power transmission antenna 113 may be appropriately changed according to the design conditions.
- the antenna unit may include a wireless communication antenna (114, 214) for transmitting and receiving data wirelessly with the electronic device as described above.
- the wireless communication antennas 114 and 214 may transmit various information of the vehicle to the electronic device through wireless data communication, and transmit and receive a control signal for controlling the driving of the vehicle.
- the vehicle wireless power transmitter 100 transmits and receives data using the wireless communication antennas 114 and 214 together with the wireless power transmission function using the wireless power transmission antennas 111, 112 and 113. Functions may all be possible.
- the electronic device when the electronic device is disposed at a position corresponding to the wireless power transmission antennas 111, 112, and 113, the electronic device transmits the wireless power.
- Battery charging using the antennas 111, 112, and 113 and data communication using the antennas 114, 214 may be performed separately or simultaneously.
- the vehicle wireless power transmitter 100 can prevent the wireless charging efficiency from being deteriorated even when both the wireless power transmission antenna and the wireless communication antenna are provided.
- the vehicle wireless power transmitter 100 prevents the distance between the wireless power transmission antennas 111, 112, and 113 and the wireless power reception antenna built in the electronic device from increasing. This deterioration can be prevented.
- the vehicle wireless power transmitter 100 has the same plane as the wireless power transmission antenna so that the wireless communication antennas 114 and 214 may be prevented from interfering with the wireless power transmission antenna. Can be placed in.
- the wireless communication antennas 114 and 214 may be disposed on the same plane as the wireless power transmission antennas 111 and 112 directly attached to one surface of the magnetic shielding sheet 120 among the plurality of wireless power transmission antennas 111, 112 and 113. Can be.
- the wireless communication antenna 114 is a first wireless power transmission antenna 111 and the second wireless power disposed on the same surface of the magnetic shielding sheet 120, as shown in Figs. It may be disposed on the hollow side of the transmitting antenna (112).
- the wireless communication antenna 114 may include a first communication antenna 114a and a second communication antenna 114b, and the first communication antenna 114a and the second communication antenna 114b are wireless. It may be arranged on the hollow side of the power transmission antenna.
- the first communication antenna 114a may be disposed on the hollow side of the first wireless power transmission antenna 111, and the second communication antenna 114b may transmit the second wireless power transmission. It may be disposed on the hollow side of the dragon antenna 112.
- the first communication antenna 114a and the second communication antenna 114b may be electrically connected in series.
- the first communication antenna 114a and the second communication antenna 114b connected in series may be a physical serial connection in which the ends are directly connected to each other, or a circuit serial connection via a separate circuit unit. It may be.
- the wireless communication antenna 114 is a first wireless power transmission antenna 111 and the second wireless power disposed on the same surface of the magnetic shielding sheet 120, as shown in Figs. It may be disposed to surround the outside of the transmitting antenna 112, respectively.
- the wireless communication antenna 114 may include a first communication antenna 114a and a second communication antenna 114b, and the first communication antenna 114a and the second communication antenna 114b are wireless. It may be arranged to surround the outside of the power transmission antenna.
- the first communication antenna 114a may be disposed to surround the outside of the first wireless power transmission antenna 111, and the second communication antenna 114b may be the second wireless power. It may be arranged to surround the outside of the transmitting antenna 112. In this case, the first communication antenna 114a and the second communication antenna 114b may be electrically connected in series as in the above-described embodiment.
- the wireless communication antenna 214 is the first wireless power transmission antenna 111 and the second wireless power transmission for disposed on the same surface of the magnetic shielding sheet 120 as shown in FIG. It may be arranged to surround the outside of the antenna 112 at the same time.
- the wireless communication antenna 214 may be formed of one member, and simultaneously surrounds the outside of the first wireless power transmission antenna 111 and the second wireless power transmission antenna 112 disposed on the same surface. It may be arranged to.
- the wireless communication antennas 114 and 214 may be spaced apart from each other at an inner side or an outer side of the first wireless power transmitting antenna 111 and the second wireless power transmitting antenna 112.
- the wireless communication antennas 114 and 214 may be disposed to have a distance of 1 to 2 mm from an inner side or an outer side of the first wireless power transmission antenna 111 and the second wireless power transmission antenna 112. .
- the wireless communication antenna 114 when the wireless communication antenna 114 is disposed in the hollow portion of the wireless power transmission antennas 111 and 112, the wireless communication antenna 114 may be spaced apart from the edge defining the hollow portion. have.
- the wireless communication antenna 114 when the wireless communication antenna 114 is disposed to surround the outside of the wireless power transmission antennas 111 and 112, the wireless communication antenna 114 has a border and a gap between the wireless power transmission antennas 111 and 112. Can be spaced apart.
- the wireless power transmitter 100 for a vehicle may be arranged so that the wireless power transmission antennas 111 and 112 and the wireless communication antennas 114 and 214 do not overlap each other even if they are disposed on the same plane. have.
- the electronic device may not change its position. Both wireless charging using the wireless power transmission antennas 111, 112, and 113 and data communication using the wireless communication antennas 114, 214 may be performed at the same location.
- the total thickness of the antenna unit may be prevented from overlapping with each other. Accordingly, even if the vehicle wireless power transmitter 100 according to an embodiment of the present invention includes the wireless communication antennas 114 and 214 for data communication, the wireless power transmission antennas 111, 112, and 113 used in wireless charging and the electronic device may be used. Since the distance between the antennas for receiving wireless power is not changed, power transmission efficiency of the same level as the conventional one can be maintained.
- an antenna for wireless power transmission is composed of three flat coils as in the present invention, and one flat coil (hereinafter, referred to as a 'third wireless power transmission antenna') is on the same side.
- the antenna is partially overlapped with two other planar coils (hereinafter, referred to as 'first wireless power transmitting antenna' and 'second wireless power transmitting antenna'), and the antenna for wireless communication transmits the third wireless power.
- the wireless power transmission device for a vehicle configured to be disposed above the antenna for the.
- the charging efficiency described in each column is the charging efficiency according to the supply power of the first wireless power transmission antenna, the second wireless power transmission antenna, and the third wireless power transmission antenna.
- the wireless wireless power transmitter 100 for a vehicle compared to the conventional wireless wireless power transmitter for which the wireless communication antenna is disposed on the upper side of the third wireless power transmission antenna. Regardless of the position of the antenna for wireless power transmission, it can be seen that the charging efficiency of the antenna for wireless power transmission all increases compared to the prior art.
- the wireless communication antennas 114 and 214 may be formed by winding a conductive member having a predetermined wire diameter a plurality of times, or may be an antenna pattern formed on one surface of a circuit board.
- the circuit board is the first wireless power transmission antenna 111 and the second wireless power transmission antenna disposed on the same surface. It may be appropriately configured so as not to overlap with the area corresponding to 112.
- the circuit board may have a through hole formed in a region corresponding to the first wireless power transmission antenna 111 and the second wireless power transmission antenna 112, or may be formed in a ring shape. .
- the magnetic field shielding sheet 120 may be formed of a plate member having a predetermined area.
- the magnetic field shielding sheet 120 may have the antennas 111, 112, and 113 for wireless power transmission on one surface thereof.
- the magnetic shielding sheet 120 is made of a magnetic material to shield the magnetic field generated by the antenna unit and increase the speed of magnetic field collection in the required direction. This can increase the performance of each antenna operating in a predetermined frequency band.
- the magnetic shielding sheet 120 may be an amorphous ribbon sheet, a ferrite sheet or a polymer sheet.
- the amorphous ribbon sheet may be a ribbon sheet including at least one or more of amorphous alloys and nanocrystalline alloys, the amorphous alloy may be a Fe-based or Co-based magnetic alloy, the ferrite sheet is Mn-Zn Sintered ferrite sheet such as ferrite or Ni-Zn ferrite.
- the magnetic shielding sheet 120 may be formed to be separated into a plurality of fine pieces to increase the overall resistance to suppress the generation of eddy currents or to increase the flexibility, the plurality of fine pieces may be formed in an amorphous form.
- the magnetic shielding sheet 120 may be a multilayer sheet in which a plurality of magnetic sheets are stacked through an adhesive layer.
- the plurality of magnetic sheets may be flake-processed to be separated into a plurality of fine pieces, and neighboring fine pieces may be entirely insulated or partially insulated.
- the magnetic shielding sheet 120 may be configured in a hybrid form including a first magnetic sheet and a second magnetic sheet having different characteristics.
- the first magnetic sheet may play a role of improving the performance of the antenna for wireless power transmission
- the second magnetic sheet may play a role of improving the performance of the antenna for wireless communication.
- the magnetic shielding sheet 120 may simultaneously improve the performance of the antenna for wireless power transmission and the antenna for wireless communication through one magnetic sheet.
- Ni-Zn ferrite sheet may be used as the magnetic shielding sheet 120 to maintain the characteristic that the magnetic characteristic does not sharply deteriorate even in a frequency band of 500 kHz or less and a few MHz or more.
- the magnetic field shielding sheet 120 is not limited thereto, and it is apparent that all of the known materials used as the shielding sheet may be used.
- the wireless power transmitter 100 for a vehicle further includes a plate-shaped heat dissipation plate 130 having a predetermined area to increase heat dissipation performance as shown in FIGS. 6 to 8. can do.
- the heat dissipation plate 130 may be disposed to contact one surface of the magnetic field shielding sheet 120. Through this, the heat dissipation plate 130 may disperse heat transferred from the heat source or quickly discharge heat transferred from the heat source to the outside.
- the heat dissipation plate 130 may be made of a material having excellent thermal conductivity.
- the heat dissipation plate 130 may be made of any one of copper, aluminum, and graphite, or may be made of a mixture of two or more.
- the heat dissipation plate 130 may be made of a material having a thermal conductivity of 200 W / m ⁇ K or more, without being limited to those listed above.
- the heat radiating plate 130 may be formed of a plate-like member having a predetermined area so as to widen the contact area with the heat source to quickly dissipate heat generated from the heat source.
- the heat dissipation plate 130 is copper or copper so as to simultaneously serve as a support for supporting the magnetic field shielding sheet 120 with a heat dissipation function for dispersing or dissipating heat generated from a heat source such as the antenna unit. It may be a plate-like metal plate such as aluminum.
- the magnetic field shielding sheet 120 may be formed through a heat radiation plate 130 made of a metal material having a predetermined strength.
- a heat radiation plate 130 made of a metal material having a predetermined strength.
- the heat dissipation plate 130 may be attached to one surface of the magnetic field shielding sheet 120 via an adhesive layer (not shown) including a thermally conductive component.
- the temperature of the air present in the upper side of the antenna unit may be lowered.
- heat dissipation plate 130 may be equally applied to the embodiment shown in FIGS. 3 to 5.
- the wireless power transmitter 100 for a vehicle further includes a housing 140 and a cover 150 detachably coupled to the housing 140 as shown in FIGS. 7 and 8. It may include.
- the wireless power transmitter for a vehicle may include the above-mentioned heat dissipation plate 130, and the wireless power transmitter for a vehicle may be embedded in a vehicle so that one surface of the cover 150 is exposed to the outside.
- the housing 140 may be provided in a housing shape having an upper receiving space.
- at least one circuit board 161 and 162 electrically connected to the antenna unit and controlling overall driving of the wireless power transmitter 100 for a vehicle may be accommodated in the accommodation space.
- circuit boards 161 and 162 may be mounted with various circuit elements for controlling the overall driving of the wireless power transmitter for a vehicle, and a driving chip for driving the antenna unit.
- the circuit device may be provided in plural or may be integrated into one.
- at least one of the circuit boards 161 and 162 may include a connector 163 for connecting to an external power source, and the connector 163 is provided through an opening 142 formed at one side of the housing 140. May be exposed to the outside.
- the housing 140 may be made of a conventional plastic material, but may be made of a material having excellent thermal conductivity so as to discharge heat generated from a heat source to the outside during driving.
- the housing 140 may be made of a metal material such as copper or aluminum, or may be made of a heat dissipating plastic material.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Details Of Aerials (AREA)
Abstract
Description
Power | 종래기술 | 본 발명 | ||||
제1무선전력 전송용 안테나 | 제2무선전력 전송용 안테나 | 제3무선전력 전송용 안테나 | 제1무선전력 전송용 안테나 | 제2무선전력 전송용 안테나 | 제3무선전력 전송용 안테나 | |
5W | 53.0% | 53.7% | 53.4% | 55.3% | 56.1% | 54.9% |
10W | 63.9% | 63.8% | 63.1% | 65.5% | 66.4% | 65.9% |
15W | 61.3% | 61.4% | 60.9% | 62.3% | 62.6% | 62.1% |
Claims (11)
- 자기장 차폐시트;상기 자기장 차폐시트의 일면에 직접 부착되는 적어도 하나의 무선전력 전송용 안테나; 및상기 무선전력 전송용 안테나와 동일면 상에 배치되는 적어도 하나의 무선 통신용 안테나;를 포함하는 차량용 무선전력 송신장치.
- 제 1항에 있어서,상기 무선전력 전송용 안테나는,중공부를 갖는 평판형코일로 구비되는 제1무선전력 전송용 안테나와 제2무선전력 전송용 안테나를 포함하고,상기 제1무선전력 전송용 안테나 및 제2무선전력 전송용 안테나는 동일 평면상에 배치되며,상기 무선 통신용 안테나는,상기 제1무선전력 전송용 안테나의 중공부 측에 배치되는 제1통신용 안테나와 상기 제2무선전력 전송용 안테나의 중공부 측에 배치되는 제2통신용 안테나를 포함하는 차량용 무선전력 송신장치.
- 제 1항에 있어서,상기 무선전력 전송용 안테나는,중공부를 갖는 평판형코일로 구비되는 제1무선전력 전송용 안테나와 제2무선전력 전송용 안테나를 포함하고,상기 제1무선전력 전송용 안테나 및 제2무선전력 전송용 안테나는 동일 평면상에 배치되며,상기 무선 통신용 안테나는,상기 제1무선전력 전송용 안테나의 외측을 감싸도록 배치되는 제1통신용 안테나와 상기 제2무선전력 전송용 안테나의 외측을 감싸도록 배치되는 제2통신용 안테나를 포함하는 차량용 무선전력 송신장치.
- 제 2항 또는 제3항에 있어서,상기 제1통신용 안테나 및 제2통신용 안테나는 서로 직렬연결되는 차량용 무선전력 송신장치.
- 제 1항에 있어서,상기 무선전력 전송용 안테나는,중공부를 갖는 평판형코일로 구비되는 제1무선전력 전송용 안테나와 제2무선전력 전송용 안테나를 포함하고,상기 제1무선전력 전송용 안테나 및 제2무선전력 전송용 안테나는 동일 평면상에 배치되며,상기 무선 통신용 안테나는 상기 제1무선전력 전송용 안테나 및 제2무선전력 전송용 안테나의 외측을 동시에 감싸도록 배치되는 차량용 무선전력 송신장치.
- 제 1항에 있어서,상기 무선 통신용 안테나는,도전성부재가 복수 회 권선된 평판형 코일이거나, 회로기판의 일면에 패턴형성된 안테나패턴인 차량용 무선전력 송신장치.
- 제 1항에 있어서,상기 자기장 차폐시트는 비정질 리본 시트, 페라이트 시트 및 폴리머 시트 중 어느 하나를 포함하는 차량용 무선전력 송신장치.
- 제 7항에 있어서,상기 자기장 차폐시트는 Ni-Zn 페라이트 시트인 차량용 무선전력 송신장치.
- 제 1항에 있어서,상기 차량용 무선전력 송신장치는,상기 자기장 차폐시트의 일면에는 배치되는 판상의 방열플레이트;를 더 포함하는 차량용 무선전력 송신장치.
- 제 9항에 있어서,상기 방열플레이트는 판상의 구리 플레이트, 알루미늄 플레이트 및 그라파이트 시트 중 어느 하나인 차량용 무선전력 송신장치.
- 제 1항에 있어서,상기 차량용 무선전력 송신장치는,상기 무선전력 전송용 안테나 및 무선 통신용 안테나와 전기적으로 연결되는 적어도 하나의 회로기판과,상기 회로기판이 내장되고, 열원에서 발생되는 열을 방출할 수 있도록 방열성을 갖는 하우징을 더 포함하는 차량용 무선전력 송신장치.
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