Hyundai Motor Company

Kia Motors Corporation

Konkuk University Industrial Cooperation Corp

Kia Corporation

Hyundai Autron Company Ltd.

Myongji University Industry and Academia Cooperation Foundation

Industry-University Cooperation Foundation Hanyang University

Hyundai Autoever Corporation

Jae Yong Seong

Zeung Il Kim

Jong Gyun Lim

Won Shil Kang

Hyun Chul Ku

Jin Su Jang

Taek Hyun Jung

Do Hoon Kim

Min Byeong Lee

Bong Ju Kim

Min Ho Shin

Chang Woo Ha

Ki Won Ko

Kong Pengfei

Ho Jin Lee

Sang Sun Lee

Byung Seung Jeon

Kyung Taek Kim

Young Cheol Koh

Jung Min No

Bae Seok Park

Ka Hyun Kim

A position alignment method comprises recognizing the state of the plurality of GAs through wireless communication with an SECC for controlling the plurality of GAs, receiving information about one or more valid GAs among the plurality of GAs from the SECC, selecting a target GA on the basis of the information about the one or more valid GAs, and establishing a wireless communication link; making a request to the SECC for performing a position alignment approval and authentication process, performing position alignment with the target GA using an LF signal if the authentication is successful, transmitting a dataset to the SECC using the LF signal after the position alignment with the target GA, and pairing with the target GA based on the dataset.

Position alignment apparatus and method for wireless charging

A method for estimating distance using low frequency (LF) signals when performing fine positioning for electric vehicle (EV) wireless power transfer (WPT) includes steps of: restricting a position of a first transmitter of an EV to a point on a first straight line extending towards a center of a primary device of a power supply device; restricting a position of a second transmitter of the EV to a point on a second straight line extending towards the center of the primary device; compensating, on the first straight line or the second straight line, for the distance between the first transmitter and the second transmitter based on the time difference of LF signals arriving at the primary device; and calculating the positions of the first and second transmitters such that first and second distances from starting points on the first and second straight lines to the first and transmitters, respectively.

Distance estimation method for fine positioning for electric vehicle wireless power transfer, and distance estimation apparatus using same

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.

Low frequency sensor based apparatus and method for measuring vehicle position

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.

Apparatus and method for measuring vehicle position based on low frequency signals

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.

Method and apparatus for controlling wireless power transfer

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.

Position measurement apparatus and method for wireless power transfer

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&#xb0;, 90&#xb0;, 180&#xb0;, or 270&#xb0; direction with respect to a magnetic field formed by a part of the LF receiving device.

Position alignment apparatus and method for wireless power transfer

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.

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.

Wireless power transfer method for electric vehicle based on auxiliary battery status and electric vehicle for the same

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.

Method and apparatus for position alignment using low-frequency antennas in wireless power transfer system

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.

Charging control apparatus and method for electric vehicle and billing system using the same

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 intensity.

Coil alignment method for aligning a vehicle assembly coil with a ground assembly coil and electric vehicle wireless power transfer apparatus using the same

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Gyeonggi-do, South Korea

Jae Yong Seong