WO2015050360A1 - 차량용 무선전력 전송장치 및 무선 충전 방법 - Google Patents
차량용 무선전력 전송장치 및 무선 충전 방법 Download PDFInfo
- Publication number
- WO2015050360A1 WO2015050360A1 PCT/KR2014/009186 KR2014009186W WO2015050360A1 WO 2015050360 A1 WO2015050360 A1 WO 2015050360A1 KR 2014009186 W KR2014009186 W KR 2014009186W WO 2015050360 A1 WO2015050360 A1 WO 2015050360A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless power
- vehicle
- power transmission
- frequency band
- frequency
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000004044 response Effects 0.000 claims abstract description 5
- 230000005672 electromagnetic field Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 11
- 230000006698 induction Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
- B60L53/124—Detection or removal of foreign bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
- B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
-
- 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
-
- 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
-
- 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
-
- 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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
-
- 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
- H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Definitions
- Embodiments of the present invention relate to a wireless power transmission apparatus mounted on a vehicle and a wireless charging method of the wireless power transmission apparatus.
- a smart phone such as a smart phone, a laptop, an MPEG-1 Audio Layer-3 (MP3) player, a headset and the like
- MP3 MPEG-1 Audio Layer-3
- the portable electronic device operates by consuming electric power stored in a battery cell (e.g., a primary battery, a secondary battery, and the like), it is necessary to charge or replace the battery cell There is a need.
- a battery cell e.g., a primary battery, a secondary battery, and the like
- a method for charging a battery cell includes a contact charging method for charging a battery using a power supply line and a power supply terminal, and wireless power induced by a magnetic field generated in a primary coil of the wireless power transmission apparatus using a wireless power receiving apparatus And a non-contact type charging method.
- a potential difference occurs between the charger and the battery when the charger and the battery are separated from each other.
- a momentary discharge phenomenon occurs and the terminal is exposed to the outside.
- a non-contact charging method has been actively researched to solve the above-mentioned problems.
- Korean Patent Registration No. 10-0971705 (filed on July 15, 2010) entitled " Solid-state charging system"
- a delay time from a time point when the request signal is output through the primary core unit to a time point when the response signal corresponding to the request signal is received is measured and compared with a reference waiting time, It is determined that the object is a foreign object, and when the measurement time is longer than the reference waiting time, the object is determined to be a normal non-contact power receiving apparatus and the wireless power signal is transmitted.
- the wireless power transmission system can be classified into a magnetic induction type and a resonance induction type.
- a wireless power transmission system of a magnetic induction type according to a WPC (Wireless Power Consortium) standard has a frequency characteristic with a resonance frequency (f 0 ) set at 100 KHz, and uses a frequency band of 110 KHz to 205 KHz.
- the Electro-Magnetic Compatibility (EMC) standard is based on a frequency band of 150 KHz or more for a vehicle. For example, a smart key that controls a vehicle uses 125 KHz as the operating frequency. Therefore, when a magnetic induction type wireless power transmission system is built in the vehicle, interference may occur between the operation frequency of the wireless power transmission system and the operation frequency for controlling the vehicle.
- An object of the present invention is to provide a vehicle wireless power transmission apparatus and a wireless charging method capable of avoiding frequency interference with electronic devices provided in a vehicle.
- a method for wireless charging by a vehicle wireless power transmission apparatus includes the steps of transmitting a signal for detection of a wireless power receiving apparatus using a frequency band lower than an operating frequency band used for controlling the vehicle, Receiving a response signal and a power control signal for the transmitted signal from the wireless power receiving apparatus using a frequency band; controlling an operating frequency or a voltage in the vehicular wireless power transmission apparatus according to the power control signal; And transmitting wireless power to the wireless power receiving apparatus.
- the operating frequency band used to control the vehicle may include an operating frequency band of a smart key.
- the frequency band used by the vehicular wireless power transmission apparatus may be a frequency band lower than a resonant frequency of the vehicular wireless power transmission apparatus.
- the resonant frequency of the vehicular wireless power transmission apparatus may be different from the resonant frequency of the wireless power receiving apparatus.
- the resonant frequency of the vehicular wireless power transmission apparatus may be higher than the resonant frequency of the wireless power receiving apparatus.
- controlling may comprise setting the operating frequency to a higher frequency within the frequency band when the power control signal indicates an increase in the radio power.
- controlling may comprise setting the operating frequency to a lower frequency within the frequency band if the power control signal indicates a drop in the radio power.
- a vehicular wireless power transmission apparatus includes a primary coil for transmitting a signal and a power signal for detection of a wireless power receiving apparatus using a frequency band lower than an operating frequency band used for controlling a vehicle, An electric drive unit connected to the primary coil for applying an electric drive signal to the primary coil so as to generate an electromagnetic field and an electric drive unit for applying an electric drive signal to the primary coil in accordance with the power control signal received from the wireless power receiver, And a control unit for controlling at least one of a voltage in the wireless power transmission device, wherein the primary coil can transmit the controlled wireless power in accordance with the power control signal to the wireless power reception device.
- frequency interference with electronic devices installed in a vehicle can be avoided in performing wireless charging, and compatibility with a conventional wireless power transmission system can be achieved.
- 1 is a diagram showing a series resonance curve for wireless power transmission.
- FIG. 2 is a diagram for explaining a frequency band used by the wireless power transmission system.
- FIG. 3 is a flowchart illustrating a wireless charging method of a vehicle wireless power transmission apparatus according to an embodiment of the present invention.
- FIG. 4 is a diagram for explaining a power control method of a general wireless power transmission apparatus.
- FIG. 5 is a diagram for explaining a power control method of a vehicular wireless power transmission apparatus according to an embodiment of the present invention.
- FIG. 6 is a diagram illustrating a wireless power transmission system to which the present invention is applied.
- FIG. 7 is a block diagram illustrating a wireless power transmission apparatus for a vehicle according to an embodiment of the present invention.
- unit or the like in the description means a unit for processing at least one function or operation, and may be implemented by hardware, software, or a combination of hardware and software.
- wireless power refers to any form of energy associated with an electric field, a magnetic field, an electromagnetic field, etc. transmitted from a transmitter to a receiver without the use of physical electromagnetic conductors.
- the wireless power may be referred to as a power signal and may also refer to an oscillating magnetic flux enclosed by the primary and secondary coils of the transmitting and receiving sides.
- power conversion in a wireless power transmission system for wirelessly charging devices including a mobile phone, a cordless phone, a smart phone, an MP3 player, a laptop, a headset, etc. will be described as an example .
- the basic principles of wireless power transmission include both magnetic induction coupling schemes and self-resonant coupling (i.e., resonance induction) schemes using frequencies below 30 MHz. However, a variety of frequencies may be used, including frequencies at which license-exempt operations at relatively high radiation levels, e.g., less than 135 kHz (LF) or 13.56 MHz (HF) are allowed.
- LF 135 kHz
- HF 13.56
- FIG. 1 is a diagram showing a series resonance curve for wireless power transmission
- FIG. 2 is a diagram for explaining a frequency band used by the wireless power transmission system.
- Wireless power transmission system operates in series resonance curve such as that illustrated in Figure 1, using the resonance frequency (f o) a frequency band (i.e., a higher frequency band than the resonance frequency) in the direction of right.
- the resonance frequency (f o) in the LC series resonant structure is set based on the following equation (1).
- the transmitting side controls the transmission power by lowering or raising the operating frequency toward the resonance frequency (f o ) according to the value of the power compensation signal received from the receiving side.
- the difference between the frequencies of 3 dB on both sides of the resonance frequency that is, the frequency at which the current value is attenuated by half is referred to as a 3 dB bandwidth
- the value obtained by dividing the resonance frequency f o by the 3 dB bandwidth is a Q value. Therefore, as shown in FIG. 2, as the resonance characteristic is sharp, the 3 dB bandwidth becomes narrower and the Q value becomes larger (High Q). Therefore, in the circuit, the value of circuit Q is related to the bandwidth. That is, when the Q value of the circuit is low, it means that the bandwidth is wide. When the Q value is high, it means that the bandwidth is narrow.
- resonance refers to a selection characteristic of a specific frequency.
- the wireless power transmission system can use a wide frequency band by using resonance with a low Q value.
- FIG. 3 is a flowchart illustrating a wireless charging method of a vehicle wireless power transmission apparatus according to an embodiment of the present invention.
- the vehicle wireless power transmission apparatus can perform the process shown in FIG. 3, for example, in order to charge the battery cell.
- the battery cell may be included in a portable electronic device, and may be connected to or included in a wireless power receiving device.
- the vehicle wireless power transmission device according to the present invention may be provided inside a vehicle, and the portable electronic device may charge the battery cell using the wireless power receiving device inside the vehicle.
- the vehicular wireless power transmission apparatus transmits a signal for detecting the wireless power receiving apparatus using a frequency band lower than an operating frequency band for controlling the vehicle (S310).
- the operating frequency band controlling the vehicle may include an operating frequency band of a smart key.
- the smart key may operate at a frequency of 125 KHz, and the vehicle wireless power transmission apparatus may use a frequency band of 90 to 110 KHz.
- the vehicular wireless power transmission apparatus may perform wireless charging using a frequency band lower than the resonance frequency set in the vehicular wireless power transmission apparatus.
- the resonant frequency of the vehicular wireless power transmission apparatus according to the present invention may be different from the resonant frequency of the wireless power receiving apparatus.
- the resonant frequency of the vehicular wireless power transmission apparatus may be set to be higher than the resonant frequency (100 KHz) of the wireless power receiving apparatus.
- the signal for detecting the wireless power receiving apparatus may be a digital ping.
- the digital ping is for enabling a wireless power receiving apparatus to transmit necessary information to a wireless power transmitting apparatus.
- the wireless power transmitting apparatus for a vehicle according to the present invention is capable of transmitting, from the wireless power receiving apparatus, Signal, a power control signal, and the like (S320). For example, when a wireless power receiving apparatus receives a digital ping from a wireless power transmitting apparatus, information on a unique identifier (ID), manufacturer ID, and the like of the wireless power receiving apparatus is transmitted to the wireless power transmitting apparatus .
- ID unique identifier
- manufacturer ID manufacturer ID
- the wireless power receiving apparatus may further include, through the load modulation, power control information requesting to adjust the level of the wireless power received from the wireless power transmission apparatus, charge state information indicating a charge level of the battery cell, Al may transmit full charge information, signal strength information to enable the transmitter to determine the primary coil for power transmission, rectified power information indicating the amount of power provided to the output, and the like. If the unique ID and the manufacturer ID of the wireless power receiving apparatus are not received within a predetermined time even though the object is detected through the digital ping, the vehicle wireless power transmission apparatus according to the present invention transmits the corresponding object object). When the sensed object is judged to be a foreign object, the vehicular wireless power transmission apparatus does not transmit the wireless power. If the sensed object is identified as a wireless power receiving device, the in-vehicle wireless power transmission device may initiate a wireless power transmission.
- the vehicle wireless power transmission apparatus may further include a control unit that, when receiving a power control signal from a wireless power receiving apparatus during transmission of wireless power, transmits at least one of an operating frequency of the vehicle wireless power transmission apparatus and a voltage in the vehicle wireless power transmission apparatus (S330).
- a control unit that, when receiving a power control signal from a wireless power receiving apparatus during transmission of wireless power, transmits at least one of an operating frequency of the vehicle wireless power transmission apparatus and a voltage in the vehicle wireless power transmission apparatus (S330).
- the power control signal indicates an increase in the power of the wireless power, that is, when the wireless power receiving apparatus requests to transmit more power
- the in-vehicle wireless power transmission apparatus transmits the power control signal in the frequency band
- the operating frequency can be set to a higher frequency.
- the in-vehicle wireless power transmission apparatus can set the operating frequency to a lower frequency within the frequency band when the power control signal indicates a drop in wireless power.
- the in-vehicle wireless power transmission apparatus may transmit the adjusted wireless power according to
- FIG. 4 is a view for explaining a power control method of a general wireless power transmission apparatus
- FIG. 5 is a diagram for explaining a power control method of a vehicular wireless power transmission apparatus according to an embodiment of the present invention.
- a power control method for a vehicular wireless power transmission apparatus according to the present invention will be described in detail with reference to FIGS. 4 and 5.
- FIG. 4 is a view for explaining a power control method of a general wireless power transmission apparatus
- FIG. 5 is a diagram for explaining a power control method of a vehicular wireless power transmission apparatus according to an embodiment of the present invention.
- a conventional wireless power transmission apparatus uses a resonance frequency (F o ) of 100 KHz in the same manner as a wireless power receiving apparatus.
- F o resonance frequency
- control is performed so that the operating frequency is shifted to the minimum current frequency (F2).
- the maximum current frequency F1 is 110KHz and the minimum current frequency F2 is 205KHz (F1 ⁇ F2). That is, the frequency band used by the wireless power transmission apparatus may be 110 KHz to 205 KHz.
- interference may occur between the frequency used by the wireless power transmission device and the frequency used by the electronic devices provided in the vehicle.
- the vehicle-use wireless power transmission apparatus is configured such that the resonance frequency (F ' o ) of the vehicle-use wireless power transmission apparatus is lower than the resonance frequency Low frequency band) can be used.
- the frequency band of use (or operation) is narrow, so that voltage control can be used together if necessary.
- the vehicular wireless power transmission apparatus according to the present invention can use a frequency band of 90 KHz to 110 KHz.
- the maximum current frequency F1 and the minimum current frequency F2 are changed in position with respect to the resonance frequency F o of the wireless power receiving apparatus (F2 ⁇ F1).
- F2 to F o the amount of the signal is wireless power receiving device sends to the (send more power signal) following the same frequency control (frequency down) with the existing
- the received power of the wireless power receiving apparatus is lowered, so that the vehicle wireless power transmitting apparatus reverses the frequency control as compared with the conventional one.
- the operating frequency is F2 to F o can be set to raise the operating frequency for the additional power requirements of the wireless power receiving device when it is set to up a resonance frequency (F 'o) between have.
- the operating frequency can be set to the minimum current frequency F2.
- FIG. 6 is a diagram illustrating a wireless power transmission system to which the present invention is applied.
- the wireless power transmission system 600 includes a wireless power transmission apparatus 610 and one wireless power reception apparatus 650-1 or n wireless power reception apparatuses 650 (n is a natural number) -1, ..., 650-n.
- the wireless power transmission device 610 may be an in-vehicle wireless power transmission device.
- the wireless power transmission apparatus 310 includes a primary core.
- the primary core may include one or more primary coils.
- the wireless power transmission device 610 may have any suitable form, but one preferred form may be a flat platform with a power transfer surface.
- Each of the wireless power receiving devices 650-1, ..., 650-n may be located on or near the platform.
- Each of the wireless power receiving apparatuses 650-1 to 650-n is detachable from the wireless power transmitting apparatus 610.
- Each of the wireless power receiving devices 650-1 ... 650-n is coupled to an electromagnetic field generated by the primary core of the wireless power transmission device 610 when it is near the wireless power transmission device 610 And includes a secondary core.
- the secondary core may include one or more secondary coils.
- the wireless power transmission device 610 transmits power to the wireless power receiving devices 650-1, ..., 650-n without direct electrical contact.
- the primary core and the secondary core are magnetically inductive coupling or resonance inductively coupled to each other.
- the primary coil or secondary coil may have any suitable shape.
- the primary and secondary coils may be copper wire wrapped around a high permeability formation such as ferrite or amorphous material.
- the wireless power receiving apparatuses 650-1 to 650-n are connected to an external load (not shown here, also referred to as an actual load of the wireless power receiving apparatus) and are wirelessly transmitted from the wireless power transmitting apparatus 610
- the received power can be supplied to the external load.
- the wireless power receiving devices 650-1, ..., 650-n may each be configured to carry power received by an object that consumes or stores power, such as a portable electric or electronic device or a rechargeable battery cell or battery, can do.
- FIG. 7 is a block diagram illustrating a wireless power transmission apparatus for a vehicle according to an embodiment of the present invention.
- the vehicular wireless power transmission apparatus 700 includes a primary coil 710, an electric drive unit 720, a control unit 730, and a current measurement unit 740.
- the primary coil 710 transmits signals and power signals for detection of the wireless power receiving apparatus using frequency bands lower than the operating frequency band of the smart key controlling the vehicle.
- the electric drive unit 720 is connected to the primary coil 710 to apply the electric drive signals to the primary coil 710 so that an electromagnetic field is generated at the primary coil 710.
- the control unit 730 is connected to the electric drive unit 720 and includes a control signal 731 for controlling an alternating current signal required when the primary coil 710 generates an induction magnetic field or causes self- Can be generated.
- the control unit 730 may control at least one of the operating frequency and the voltage in the wireless power transmission device according to the power control signal received from the wireless power receiving device.
- the current measuring unit 740 measures a current flowing in the primary coil 710.
- the current measured by the current measuring unit 740 may be an alternating current.
- the current measurement unit 740 may be a current sensor.
- the current measuring unit 740 may be a transformer that uses the high current flowing in the primary coil to a low current.
- the control unit 730 can obtain the information transmitted by the wireless power receiving apparatus using the current value measured by the current measuring unit 740.
- the wireless power receiving apparatus can continuously or periodically transmit the power control signal requesting the power increase or the power down request requesting the power down to the vehicle wireless power transmission apparatus 700 until the required power is satisfied by varying the load . For example, when the control unit 730 receives a power control signal requesting a power increase from the wireless power receiving apparatus through a load variation, a current flowing in the primary coil 710 such that a higher power is transmitted as a response thereto Can be increased.
- the control unit 730 in order to allow a larger current to flow in the primary coil 710, the control unit 730 generates a control signal 731 so that an AC signal larger than the reference AC signal can be applied to the primary coil 710. [ Can be adjusted.
- the control unit 730 receives the power control signal requesting the power down from the wireless power receiving apparatus, an AC signal lower than the reference AC signal is supplied to the primary coil 710 so that power lower than the current transmission power is transmitted
- the control signal 731 can be adjusted.
- the control unit 730 transmits the in- The operating frequency can be set to a higher frequency within the operating frequency band of the apparatus 700.
- the control unit 730 controls the in- The operating frequency can be set to a lower frequency within the operating frequency band of the controller 700.
- the control unit 730 causes the AC signal, The control signal 731 can be adjusted so that it can be applied to the coil 710.
- the control unit 730 outputs an AC signal lower than the reference AC signal to the primary coil 710
- the control signal 731 can be adjusted so that it can be applied.
- the primary coil 710 may transmit the wireless power controlled by the control unit 730 to the wireless power receiving device in accordance with the power control signal received from the wireless power receiving device.
- the vehicular wireless power transmission apparatus may include a shielding member for protecting a vehicular wireless power transmission apparatus from a stray magnetic field or an eddy current.
- the vehicular wireless power transmission apparatus may include a temperature protection circuit for monitoring the temperature around the interface. When the temperature measured by the temperature protection circuit exceeds the threshold value, the vehicle wireless power transmission apparatus according to the present invention can stop or terminate the power transmission for safety.
Abstract
Description
Claims (14)
- 차량용 무선전력 전송장치에 의한 무선 충전 방법에 있어서,차량의 제어에 사용되는 동작 주파수 대역 보다 낮은 주파수 대역을 사용하여 무선전력 수신장치의 검출을 위한 신호를 전송하는 단계;상기 무선전력 수신장치로부터 상기 전송된 신호에 대한 응답 신호 및 전력 제어 신호를 수신하는 단계;상기 전력 제어 신호에 따라 동작 주파수와 상기 차량용 무선전력 전송장치 내의 전압 중 적어도 하나를 제어하는 단계; 및상기 무선전력 수신장치로 무선전력을 전송하는 단계를 포함하는 차량용 무선전력 전송장치의 무선 충전 방법.
- 제1항에 있어서,상기 차량의 제어에 사용되는 동작 주파수 대역은,스마트 키(smart key)의 동작 주파수 대역을 포함하는 것을 특징으로 하는 차량용 무선전력 전송장치의 무선 충전 방법.
- 제1항에 있어서,상기 차량용 무선전력 전송장치가 사용하는 주파수 대역은,상기 차량용 무선전력 전송장치의 공진 주파수 보다 낮은 주파수 대역인 것을 특징으로 하는 차량용 무선전력 전송장치의 무선 충전 방법.
- 제1항에 있어서,상기 차량용 무선전력 전송장치의 공진 주파수와 상기 무선전력 수신장치의 공진 주파수는 서로 다른 것을 특징으로 하는 차량용 무선전력 전송장치의 무선 충전 방법.
- 제4항에 있어서,상기 차량용 무선전력 전송장치의 공진 주파수는,상기 무선전력 수신장치의 공진 주파수보다 높은 것을 특징으로 하는 차량용 무선전력 전송장치의 무선 충전방법.
- 제1항에 있어서,상기 제어하는 단계는,상기 전력 제어 신호가 상기 무선전력의 상승을 지시하는 경우, 상기 주파수 대역 내에서 상기 동작 주파수를 더 높은 주파수로 설정하는 단계를 포함하는 차량용 무선전력 전송장치의 무선 충전 방법.
- 제1항에 있어서,상기 제어하는 단계는,상기 전력 제어 신호가 상기 무선전력의 하강을 지시하는 경우, 상기 주파수 대역 내에서 상기 동작 주파수를 더 낮은 주파수로 설정하는 단계를 포함하는 차량용 무선전력 전송장치의 무선 충전 방법.
- 차량의 제어에 사용되는 동작 주파수 대역 보다 낮은 주파수 대역을 사용하여 무선전력 수신장치의 검출을 위한 신호 및 전력 신호를 전송하는 1차 코일;상기 1차 코일에 연결되어, 전자기장이 발생되도록 상기 1차 코일에 전기 구동 신호를 인가하는 전기 구동 유닛; 및상기 무선전력 수신장치로부터 수신한 전력 제어 신호에 따라 차량용 무선전력 전송장치의 동작 주파수 및 상기 차량용 무선전력 전송장치 내의 전압 중 적어도 하나를 제어하는 제어 유닛을 포함하고,상기 1차 코일은,상기 무선전력 수신장치로 상기 전력 제어 신호에 따라 제어된 무선전력을 전송하는 것을 특징으로 하는 차량용 무선전력 전송장치.
- 제8항에 있어서,상기 차량의 제어에 사용되는 동작 주파수 대역은,스마트 키(smart key)의 동작 주파수 대역을 포함하는 것을 특징으로 하는 차량용 무선전력 전송장치.
- 제8항에 있어서,상기 차량용 무선전력 전송장치가 사용하는 주파수 대역은,상기 차량용 무선전력 전송장치의 공진 주파수 보다 낮은 주파수 대역인 것을 특징으로 하는 차량용 무선전력 전송장치.
- 제8항에 있어서,상기 차량용 무선전력 전송장치의 공진 주파수와 상기 무선전력 수신장치의 공진 주파수는 서로 다른 것을 특징으로 하는 차량용 무선전력 전송장치.
- 제11항에 있어서,상기 차량용 무선전력 전송장치 무선전력 전송장치의 공진 주파수는,상기 무선전력 수신장치의 공진 주파수보다 높은 것을 특징으로 하는 차량용 무선전력 전송장치.
- 제8항에 있어서,상기 제어 유닛은,상기 전력 제어 신호가 상기 무선전력의 상승을 지시하는 경우, 상기 주파수 대역 내에서 상기 동작 주파수를 더 높은 주파수로 설정하는 것을 특징으로 하는 차량용 무선전력 전송장치.
- 제8항에 있어서,상기 제어 유닛은,상기 전력 제어 신호가 상기 무선전력의 하강을 지시하는 경우, 상기 주파수 대역 내에서 상기 동작 주파수를 더 낮은 주파수로 설정하는 것을 특징으로 하는 차량용 무선전력 전송장치.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020247008815A KR20240037388A (ko) | 2013-10-02 | 2014-09-30 | 차량용 무선전력 전송장치 및 무선 충전 방법 |
CN201480055010.3A CN105659469B (zh) | 2013-10-02 | 2014-09-30 | 车辆用无线电力传送装置及无线充电方法 |
KR1020167008313A KR102329581B1 (ko) | 2013-10-02 | 2014-09-30 | 차량용 무선전력 전송장치 및 무선 충전 방법 |
KR1020217037427A KR102529111B1 (ko) | 2013-10-02 | 2014-09-30 | 차량용 무선전력 전송장치 및 무선 충전 방법 |
US14/917,804 US10442298B2 (en) | 2013-10-02 | 2014-09-30 | Wireless power transmission device for vehicle and wireless charging method |
KR1020237014683A KR102649618B1 (ko) | 2013-10-02 | 2014-09-30 | 차량용 무선전력 전송장치 및 무선 충전 방법 |
US16/573,781 US11618327B2 (en) | 2013-10-02 | 2019-09-17 | Wireless power transmission device for vehicle and wireless charging method |
US18/191,357 US20230294530A1 (en) | 2013-10-02 | 2023-03-28 | Wireless power transmission device for vehicle and wireless charging method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361885522P | 2013-10-02 | 2013-10-02 | |
US61/885,522 | 2013-10-02 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/917,804 A-371-Of-International US10442298B2 (en) | 2013-10-02 | 2014-09-30 | Wireless power transmission device for vehicle and wireless charging method |
US16/573,781 Continuation US11618327B2 (en) | 2013-10-02 | 2019-09-17 | Wireless power transmission device for vehicle and wireless charging method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015050360A1 true WO2015050360A1 (ko) | 2015-04-09 |
Family
ID=52778907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/009186 WO2015050360A1 (ko) | 2013-10-02 | 2014-09-30 | 차량용 무선전력 전송장치 및 무선 충전 방법 |
Country Status (4)
Country | Link |
---|---|
US (3) | US10442298B2 (ko) |
KR (4) | KR102529111B1 (ko) |
CN (1) | CN105659469B (ko) |
WO (1) | WO2015050360A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113119786A (zh) * | 2019-12-30 | 2021-07-16 | 北京新能源汽车股份有限公司 | 一种充电控制系统及充电控制方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015050360A1 (ko) | 2013-10-02 | 2015-04-09 | 주식회사 한림포스텍 | 차량용 무선전력 전송장치 및 무선 충전 방법 |
JP6359924B2 (ja) * | 2014-09-17 | 2018-07-18 | トヨタ自動車株式会社 | 非接触送受電システム |
US10536041B2 (en) * | 2016-07-13 | 2020-01-14 | Comcast Cable Communications, Llc | System and method for wireless intercommunication and power delivery |
EP3346581B1 (en) * | 2017-01-04 | 2023-06-14 | LG Electronics Inc. | Wireless charger for mobile terminal in vehicle |
KR20180130774A (ko) * | 2017-05-30 | 2018-12-10 | 엘지이노텍 주식회사 | 무선 충전 방법 |
US11462953B2 (en) * | 2017-11-13 | 2022-10-04 | Tdk Electronics Ag | Dynamic transmission coil positioning system, wireless power transfer system and method of positioning a transmit coil |
WO2019225806A1 (ko) * | 2018-05-23 | 2019-11-28 | 엘지이노텍(주) | 무선 전력 송신 방법 및 장치 |
KR101987159B1 (ko) * | 2018-07-25 | 2019-06-10 | 현대자동차 주식회사 | 무선 충전 영역 내에 있는 물체를 검출하기 위한 장치 및 방법 |
CN110525241A (zh) * | 2019-08-12 | 2019-12-03 | 国家电网有限公司 | 一种对无线充电系统接收端的功率进行调节的装置及方法 |
KR20220026407A (ko) * | 2020-08-25 | 2022-03-04 | 삼성전자주식회사 | 전자 장치 및 전자 장치에서 적응적 동작 전압 기반의 무선 전력 전송 방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120153894A1 (en) * | 2010-12-16 | 2012-06-21 | Qualcomm Incorporated | Wireless energy transfer and continuous radio station signal coexistence |
KR101171142B1 (ko) * | 2009-11-20 | 2012-08-06 | 전자부품연구원 | 공진자기유도 기반의 차량용 무선충전장치, 방법 및 시스템 |
US20130002035A1 (en) * | 2011-06-28 | 2013-01-03 | Kabushiki Kaisha Toshiba | Wireless power transmission system, power transmission apparatus and power reception apparatus |
KR20130003965A (ko) * | 2011-07-01 | 2013-01-09 | 엘지전자 주식회사 | 복수의 전력 수신기에 대한 무선 전력 전송 |
JP2013176196A (ja) * | 2012-02-24 | 2013-09-05 | Toko Inc | ワイヤレス電力伝送装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4909750B2 (ja) * | 2007-01-29 | 2012-04-04 | Necカシオモバイルコミュニケーションズ株式会社 | 無線通信装置、移動体通信端末、および、プログラム |
JP4911148B2 (ja) * | 2008-09-02 | 2012-04-04 | ソニー株式会社 | 非接触給電装置 |
KR100971705B1 (ko) | 2009-09-03 | 2010-07-22 | 주식회사 한림포스텍 | 무접점 충전 시스템 |
KR101662513B1 (ko) * | 2011-05-04 | 2016-10-05 | 현대자동차주식회사 | 주파수 간섭을 방지하는 무선 전력 전송 방법 |
US9735623B2 (en) * | 2011-05-17 | 2017-08-15 | Samsung Electronics Co., Ltd. | Power transmitting method and power transmitter for communication with power receiver |
US8541976B2 (en) * | 2011-05-23 | 2013-09-24 | Honda Motor Co., Ltd. | Vehicle mounted personal device battery charging station and operating methods to avoid interference |
JP5842106B2 (ja) * | 2011-09-20 | 2016-01-13 | パナソニックIpマネジメント株式会社 | 非接触給電システム |
KR101951358B1 (ko) * | 2011-12-15 | 2019-02-22 | 삼성전자주식회사 | 무선 전력 송신기 및 그 제어 방법 |
KR20130091868A (ko) * | 2012-02-09 | 2013-08-20 | 현대자동차주식회사 | 주파수 간섭을 방지하는 무선 전력 전송 방법 |
KR101902795B1 (ko) * | 2012-02-21 | 2018-11-14 | 삼성전자주식회사 | 무선 충전 장치 및 방법 |
WO2014006627A1 (en) * | 2012-07-05 | 2014-01-09 | Powermat Technologies Ltd. | System and method for providing inductive power at multiple power levels |
WO2015050360A1 (ko) | 2013-10-02 | 2015-04-09 | 주식회사 한림포스텍 | 차량용 무선전력 전송장치 및 무선 충전 방법 |
-
2014
- 2014-09-30 WO PCT/KR2014/009186 patent/WO2015050360A1/ko active Application Filing
- 2014-09-30 KR KR1020217037427A patent/KR102529111B1/ko active IP Right Grant
- 2014-09-30 KR KR1020247008815A patent/KR20240037388A/ko active Search and Examination
- 2014-09-30 CN CN201480055010.3A patent/CN105659469B/zh active Active
- 2014-09-30 US US14/917,804 patent/US10442298B2/en active Active
- 2014-09-30 KR KR1020167008313A patent/KR102329581B1/ko active IP Right Grant
- 2014-09-30 KR KR1020237014683A patent/KR102649618B1/ko active IP Right Grant
-
2019
- 2019-09-17 US US16/573,781 patent/US11618327B2/en active Active
-
2023
- 2023-03-28 US US18/191,357 patent/US20230294530A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101171142B1 (ko) * | 2009-11-20 | 2012-08-06 | 전자부품연구원 | 공진자기유도 기반의 차량용 무선충전장치, 방법 및 시스템 |
US20120153894A1 (en) * | 2010-12-16 | 2012-06-21 | Qualcomm Incorporated | Wireless energy transfer and continuous radio station signal coexistence |
US20130002035A1 (en) * | 2011-06-28 | 2013-01-03 | Kabushiki Kaisha Toshiba | Wireless power transmission system, power transmission apparatus and power reception apparatus |
KR20130003965A (ko) * | 2011-07-01 | 2013-01-09 | 엘지전자 주식회사 | 복수의 전력 수신기에 대한 무선 전력 전송 |
JP2013176196A (ja) * | 2012-02-24 | 2013-09-05 | Toko Inc | ワイヤレス電力伝送装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113119786A (zh) * | 2019-12-30 | 2021-07-16 | 北京新能源汽车股份有限公司 | 一种充电控制系统及充电控制方法 |
Also Published As
Publication number | Publication date |
---|---|
US20200009972A1 (en) | 2020-01-09 |
KR20230067699A (ko) | 2023-05-16 |
KR102529111B1 (ko) | 2023-05-03 |
CN105659469B (zh) | 2019-11-19 |
KR102649618B1 (ko) | 2024-03-19 |
KR20210143930A (ko) | 2021-11-29 |
US20160221459A1 (en) | 2016-08-04 |
US10442298B2 (en) | 2019-10-15 |
KR102329581B1 (ko) | 2021-11-23 |
CN105659469A (zh) | 2016-06-08 |
US11618327B2 (en) | 2023-04-04 |
KR20160065841A (ko) | 2016-06-09 |
US20230294530A1 (en) | 2023-09-21 |
KR20240037388A (ko) | 2024-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2015050360A1 (ko) | 차량용 무선전력 전송장치 및 무선 충전 방법 | |
US11750040B2 (en) | Apparatus and method for detecting foreign object in wireless power transmitting system | |
US11757309B2 (en) | Apparatus and method for detecting foreign objects in wireless power transmission system | |
US9588163B2 (en) | Apparatus and method for detecting foreign object in wireless power transmitting system | |
CN110266119B (zh) | 检测设备、电力供应系统以及控制检测设备的方法 | |
WO2013125849A1 (en) | Wireless charging apparatus and method | |
US20130154386A1 (en) | Wireless power transmitter, wireless power receiver and wireless power transmission method | |
CN102694425A (zh) | 无线电力接收装置及其电力控制方法 | |
WO2015182958A1 (ko) | 무선전력 수신 장치 및 무선 통신 방법 | |
WO2016114629A1 (ko) | 무선 전력 전송 장치 | |
KR20140008273A (ko) | 무선 전력 전송 시스템에서 이물질 감지 장치 및 방법 | |
KR20190042426A (ko) | 무선 전력 전송 기술을 이용하여 전자기기를 충전하는 전자 장치 | |
KR20190090751A (ko) | 무선 전력 전송 시스템에서 이물질 감지 장치 및 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14850531 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14917804 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20167008313 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14850531 Country of ref document: EP Kind code of ref document: A1 |