Abstract: A method for controlling wireless power transfer (WPT), performed by an electric vehicle (EV) device receiving power from a supply device is provided. The method includes checking service details regarding at least one method for fine positioning and pairing between the supply device and the EV device and selecting a service. Fine positioning is performed with the supply device according to a pairing method associated with the selected service. Additionally, LF pairing is performed based on the selected service; an initial alignment check is performed using pre-charging power transmission; and LPE pairing is performed based on the selected service and a result of the initial alignment check.

Abstract: A wireless power transfer (WPT) method based on a state of an auxiliary battery and an electric vehicle (EV) for the same includes receiving, by an EV charging apparatus, a wireless jump start request message from a user terminal; transmitting, by the EV charging apparatus, a primary jump start power according to the wireless jump start request message to the EV; driving an auxiliary power supply device provided in the EV by a secondary jump start power induced by the primary jump start power; driving a controller of the EV based on a preset power outputted from the auxiliary power supply device; and charging, by the controller of the EV, an auxiliary battery of the EV.

Abstract: A position measurement method for position alignment with a vehicle, performed by a charging pad, may comprise performing synchronization with a vehicle entering a vicinity of the charging pad, transmitting low frequency (LF) signals having a same strength through a plurality of LF spots of the charging pad, receiving information on reception strengths of the LF signals from the vehicle, adjusting a transmission strength for the plurality of LF spots according to the information on reception strengths received from the vehicle, and transmitting the LF signals according to the adjusted transmission strength.

Abstract: A position alignment method, performed by a vehicle assembly (VA) including a reception pad receiving power transmitted from a transmission pad of a ground assembly (GA) is provided. The method includes transmitting a magnetic field using a transmitting device disposed on a reception pad, the transmitting device operating with low frequency (LF); receiving a magnetic field related value from the GA, the magnetic field being detected by an LF receiving device disposed on the transmission pad of the GA; and calculating, by a controller, a distance between the transmission pad and the reception pad using the magnetic field related value. A part of the transmitting device is disposed to arrange a magnetic field formed by the part of the transmitting device in a 0°, 90°, 180°, or 270° direction with respect to a magnetic field formed by a part of the LF receiving device.

Abstract: A method for measuring a position, is performed by a vehicle assembly (VA) for alignment between a ground assembly (GA) and the VA. The method includes transmitting low frequency (LF) signals to initiate alignment with the GA and estimating a position of a vehicle using at least one sensor mounted on the vehicle. Information regarding the estimated position of the vehicle is provided to the GA and information regarding a position of the vehicle measured by LF receive antennas of the GA and an acceleration flag calculated by the GA is received. Accordingly, a transmission strength of the LF signals transmitted by the VA is adjusted based on the information regarding the position of the vehicle measured by the LF receive antennas and the acceleration flag.

Abstract: A position alignment method performed by a ground assembly for wireless power transfer includes measuring, through at least one low frequency (“LF”) receiver of the ground assembly, a first magnetic flux density for a magnetic field emitted from at least one LF transmitter of a vehicle assembly; measuring, through the at least one LF receiver, a second magnetic flux density for a magnetic field emitted from the at least one LF transmitter; configuring a received signal measurement based on a comparison result of the first magnetic flux density and the second magnetic flux density; and providing the configured received signal measurement to a vehicle.

Abstract: A position alignment method for position alignment between a position alignment apparatus including a reception pad and a magnetic field detection apparatus including a transmission pad which performs wireless power transfer (WPT) includes: connecting, by the position alignment apparatus, to the magnetic field detection apparatus using wireless communication, wherein at least one antenna is located in the transmission pad; radiating, by the position alignment apparatus, at least one magnetic field using at least one antenna located in the reception pad; receiving, by the position alignment apparatus, magnetic field measurement values from the magnetic field detection apparatus; and obtaining, by the position alignment apparatus, information indicating a positional difference between the reception pad and the transmission pad by comparing the magnetic field measurement values with previously-stored reference values.

Abstract: A position alignment method for wireless charging performed by a VA for position alignment with a target GA is provided. The method includes identifying states of a plurality of GAs via wireless communication with an SECC that operates the plurality of GAs and receiving, from the SECC, information regarding one or more available GAs of the plurality of GAs. A target GA based is selected on the information regarding available GAs and a wireless communication association with the target GA is performed. A procedure for position alignment approval and a procedure for authentication is executed by a request to the SECC and in response to determining that the authentication is successful, position alignment with the target GA using LF signals is performed, wherein LF signals assigned to each GA are distinguished from LF signals assigned to other GAs in a TDM scheme.

Abstract: An EV charging control apparatus may include a controller receiving a charging approval message for an EV from a charging management server, starting a charging to the EV in response to the charging approval message, measuring and accumulating an amount of energy charged to the EV, recognizing a charging termination operation from a user of the EV or the EV, and deriving charging information based on the amount of energy charged in response to the charging termination operation, and a short-range wireless communication module establishing a connection with a short-range wireless communication module mounted on the EV, and transmitting the charging information to the EV.

Abstract: A coil alignment method performed in a coil alignment apparatus coupled to a VA controller includes: sensing magnetic field intensities induced from a ground assembly (GA) coil through a first auxiliary coil and a second auxiliary coil which are fixedly coupled to a VA coil; comparing a first magnetic field intensity sensed through the first auxiliary coil with a second magnetic field intensity sensed through the second auxiliary coil; moving the VA coil or the GA coil to a position where there is a predetermined difference or less between the first magnetic field intensity and the second magnetic field intensity; and moving at least one of the VA coil and the GA coil in a direction facing each other, so that a center point of the VA coil and a center point of the GA coil are located within a shortest distance of each other or within a certain error range of the shortest distance, while maintaining the predetermined difference or less between the first magnetic field intensity and the second magnetic field in

Abstract: Disclosed are alignment methods and apparatuses for power transmission/reception coils in an electric vehicle wireless power transfer system. An alignment method may comprise moving a primary coil such that a reference center point of the primary coil sequentially passes through a plurality of measurement points located on the primary coil or located outside the primary coil; measuring physical quantities induced in the primary coil by a power or a magnetic field of a secondary coil magnetically coupled with the primary coil at the reference center point and the plurality of measurement points; and calculating a relative position of the primary coil with respect to the secondary coil based on the measured physical quantities.

Abstract: A wireless charging control apparatus may include at least one horizontal detector configured for detecting an inclination of an electric vehicle (EV); a suspension control device controlling a plurality of suspensions disposed near wheels of the EV to adjust a height or inclination of the EV; and a controller measuring the inclination of the EV based on data collected from the at least one horizontal sensor, estimating an inclination of a reception pad based on the measured inclination of the EV, and controlling the suspension control device to adjust the inclination of the EV when the inclination of the reception pad is equal to or greater than a predetermined threshold value.

Abstract: A coil alignment method performed in a vehicle-side coil alignment apparatus coupled to a vehicle assembly (VA) controller includes: moving a light-blocking unit protruding from a vehicle parked in a wireless charging area in a first direction toward the ground facing one side of a vehicle-side wireless power transfer pad which is mounted on the vehicle and includes a VA coil, where the light-blocking unit protrudes from the one side of the vehicle-side wireless power transfer pad; stopping movement of the light-blocking unit in response to a first stop signal from a ground assembly (GA) controller; moving the light-blocking unit in a second direction perpendicular to the first direction; and stopping movement of the light-blocking unit in response to a second stop signal from the GA controller.

Abstract: A method performed by a discovery apparatus of EV includes: receiving a first transmit signal including a first network identifier from a supply equipment communication controller (SECC) of a charging station into which the EV enters and a plurality of PDs which are managed by the SECC and respectively located in positions corresponding to a plurality of charging spots of the charging station; transmitting a first connection request signal based on the first network identifier to the SECC; configuring a first wireless network with the SECC; receiving information relating to second network identifiers for the plurality of PDs from the SECC through the first wireless network; receiving second transmit signals including the second network identifiers from the plurality of PDs; selecting a specific PD among the plurality of PDs based on received signal strengths of the second transmit signals; and configuring a second wireless network with the specific PD.

Abstract: An electric vehicle (EV) parallel charging method may comprise determining whether a parallel charging input is detected or not, the parallel charging input being an input that both a conductive charging input and an inductive charging input are sensed; in response to determining that the parallel charging input is detected, comparing a power of the conductive charging input with a power of the inductive charging input; selecting an input applied to a high-voltage battery and an input applied to at least one of an auxiliary battery and a load based on a result of the comparison; and performing a parallel charging operation for the high-voltage battery and at least one of the auxiliary battery and the load by using powers supplied from the selected inputs.

Abstract: A charging control method is provided for an electric vehicle (EV) receiving a power from a charging apparatus. The method includes detecting a signal from an implanted medical device (IMD) and determining a limitation on a charging output based on whether the signal from the IMD is detected. Information related to the limitation on the charging output is then transmitted to the charging apparatus which provides power to the electric vehicle.

Abstract: A charging control method performed by an electric vehicle (EV) configured to receive power wirelessly from a charging apparatus may include: detecting a presence of an occupant in the EV; detecting a presence of an implantable medical device (IMD) in the EV; determining a charging mode among a plurality of predefined charging modes according to at least one of the presence of the occupant and the presence of the IMD; transmitting information indicating the determined charging mode to the charging apparatus. The charging apparatus can activate a wireless power transfer (WPT) procedure in which power is wirelessly transmitted to the EV in accordance with the determined charging mode.

Abstract: Disclosed herein are a wireless power transfer apparatus, a method for wireless power transfer and a method of detecting a resonant frequency used in a wireless power charging system or a wireless power transfer. The wireless power transfer apparatus includes a plurality of transmission coils, each of which transmits power to a receiver coil through magnetic resonance; a signal generator transmitting signals having different resonant frequencies to the plurality of transmission coils, the signal generator being connected to the plurality of transmission coils; and a feedback unit transferring information on amounts of powers which are respectively output by the plurality of transmission coils to the signal generator.

Abstract: A position alignment method for position alignment between a position alignment apparatus including a reception pad and a magnetic field detection apparatus including a transmission pad which performs wireless power transfer (WPT) includes: connecting, by the position alignment apparatus, to the magnetic field detection apparatus using wireless communication, wherein at least one antenna is located in the transmission pad; radiating, by the position alignment apparatus, at least one magnetic field using at least one antenna located in the reception pad; receiving, by the position alignment apparatus, magnetic field measurement values from the magnetic field detection apparatus; and obtaining, by the position alignment apparatus, information indicating a positional difference between the reception pad and the transmission pad by comparing the magnetic field measurement values with previously-stored reference values.

Abstract: Provided are a secondary charging pad alignment method, a wireless charging control apparatus, and a method of operating a charger. The secondary charging pad alignment method includes monitoring signals induced at a plurality of hall sensors arranged in a vehicle, estimating a position of a primary charging pad of a charger based on measured values of the plurality of hall sensors, and generating one of movement information for moving a secondary charging pad disposed in the vehicle to the estimated position of the primary charging pad and steering information of the vehicle corresponding to the movement information.