Hyundai Motor Company

Konkuk University Industrial Cooperation Corp

Kia Motors Corporation

Won Shil Kang

Jae Yong Seong

Jong Gyun Lim

Hyun Chul Ku

Kong Pengfei

Ka Hyun Kim

Jung Min No

Bae Seok Park

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

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.

Alignment method for wireless power transfer coil and apparatus for the same

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.

Coil alignment method in wireless power transfer system and apparatus using the same

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.

Wireless power transfer method and apparatus and method of detecting resonant frequency used in wireless power transfer

A wireless charging system for a vehicle may include: a power transmitter having a plurality of transmitting coils; and a controller configured to measure a current and a voltage of each of the plurality of transmitting coils and to apply charging power only to a subset of the plurality of transmitting coils based on a magnitude of the measured current and voltage of each of the plurality of transmitting coils.

Growing community of inventors

Seoul, South Korea

Won Shil Kang