Patents by Inventor Nah Young KIM

Nah Young KIM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240223008
    Abstract: A wireless charging apparatus of the present invention includes a heat radiation module, a circuit board disposed in the heat radiation module, and a power module disposed in the heat radiation module and having a coil for wireless charging, wherein the heat radiation module includes a case body in which the circuit board and the power module are housed, and a partition part formed inside the case body to form a separation space between the circuit board and the power module.
    Type: Application
    Filed: February 22, 2022
    Publication date: July 4, 2024
    Inventors: Nah Young KIM, Seung Hwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20240208346
    Abstract: An electric vehicle of the present invention includes a footrest, an extension part which comprises a housing frame extending from the footrest, and a steering tube rotatably coupled to the housing frame, a handlebar coupled to the steering tube to control a driving direction and a power reception apparatus which surrounds at least a portion of an outer surface of the extension part.
    Type: Application
    Filed: February 11, 2022
    Publication date: June 27, 2024
    Inventors: Nah Young KIM, Seung Hwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20240001790
    Abstract: A wireless charging device according to an embodiment can effectively dissipate heat generated in a magnetic part, without causing a short circuit of a coil part or degradation of charging efficiency by having the magnetic part placed in a cooling part separated from the coil part and circulating cooling water in the cooling part. Therefore, the wireless charging device can be usefully used in a transportation means, such as an electric vehicle, which requires high-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: October 15, 2021
    Publication date: January 4, 2024
    Inventors: Seunghwan LEE, Tae Kyoung KIM, Jong Hak CHOI, Nah Young KIM
  • Publication number: 20230402874
    Abstract: A wireless charging device according to one embodiment has an inductance deviation at 80° C. of 0 or more, and has a magnetic part that has a permeability change rate (?P1) of 0/° C. or more, thus having excellent high-temperature stability, and being able to maintain excellent charging efficiency even at high temperature. Therefore, the wireless charging device can be useful in a transportation means such as an electric vehicle requiring large-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: October 19, 2021
    Publication date: December 14, 2023
    Inventors: Nah Young KIM, Seunghwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20230402867
    Abstract: There is provided a wireless charging apparatus. The wireless charging apparatus comprises: a power transmitter for wirelessly transmitting power to a battery; a temperature sensor for detecting at least one of a temperature of the power transmitter, a temperature of the battery, and a temperature of a power receiver; and a controller for changing a current profile of the power transmitter based on the temperature.
    Type: Application
    Filed: November 7, 2022
    Publication date: December 14, 2023
    Inventors: Nah Young KIM, Yeon Jeong JO, Seung Hwan LEE, Tae Kyoung KIM
  • Publication number: 20230398882
    Abstract: There is provided a charging management apparatus. The charging management apparatus comprises: a charging station including a plurality of charging docks capable of loading a plurality of charging objects; a power supply configured to supply power for wireless charging to the plurality of charging docks in order to wirelessly charge the plurality of charging objects loaded in the charging station; and a controller configured to determine which charging mode to charge the plurality of charging objects among a constant current mode and a constant voltage mode based on a charging dock ratio in which wireless charging is being performed, and configured to control the power supply to charge the plurality of charging objects in the determined charging mode, when the power for wireless charging is supplied to the plurality of charging docks.
    Type: Application
    Filed: November 7, 2022
    Publication date: December 14, 2023
    Inventors: Nah Young KIM, Yeon Jeong Jo, Seung Hwan Lee, Tae Kyoung Kim
  • Publication number: 20230365006
    Abstract: A wireless charging apparatus according to an embodiment includes a magnetic unit with a low strain rate (thermal strain) at 180° C., wherein a position change (?DR1) at 180° C. is 0.07 or less, to thereby provide the magnetic unit with improved heat resistance and magnetic properties and prevent deformation and damage of the magnetic unit during wireless charging, and further improve the high temperature stability and charging efficiency. Therefore, the wireless charging apparatus can be efficiently used in personal transportation means such as electric motorcycles, electric kickboards, electric scooters, electric wheelchairs, and electric bicycles, as well as transportation means such as electric vehicles requiring large-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: January 12, 2022
    Publication date: November 16, 2023
    Inventors: Nah Young KIM, Seunghwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20230369894
    Abstract: The wireless charging device according to an embodiment allows adjustment of characteristics, including the distance between a coil and a magnetic material, to be within particular numerical ranges and thus has high charging efficiency, facilitates assembly, and can be improved in durability. Therefore, the wireless charging device is useful in a transportation means, such as an electric vehicle, requiring high-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: October 15, 2021
    Publication date: November 16, 2023
    Inventors: Nah Young KIM, Seunghwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20230344274
    Abstract: A wireless charging device according to the present invention comprises a hybrid-type magnetic unit including a first magnetic unit and a second magnetic unit and, by adjusting the magnetic permeability, inductance, and arrangement structure of the units, can effectively reduce a heat generated during high power density wireless charging and enhance charging efficiency. Therefore, the wireless charging device can be efficiently used in various fields of personal transportation means such as electric motorcycles, electric kickboards, electric scooters, electric wheelchairs, and electric bicycles, as well as fields requiring large-capacity power transmission such as electric vehicles.
    Type: Application
    Filed: July 27, 2021
    Publication date: October 26, 2023
    Inventors: Nah Young KIM, Seunhwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20230339337
    Abstract: A wireless charging device according to an embodiment can enhance charging efficiency and minimize heat generation while having an appropriate thickness by satisfying a specific expression in which characteristics including the distance between a magnetic part and a shield part and a Q factor are reflected. Therefore, the wireless charging device is useful for a mobility means, such as an electric vehicle, requiring high-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: October 15, 2021
    Publication date: October 26, 2023
    Inventors: Nah Young KIM, Seunghwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20230336026
    Abstract: A wireless charging apparatus for a transportation means according to an embodiment comprises a magnetic unit having a moisture absorption rate adjusted to a specific range, and accordingly, high magnetic properties and charging efficiency may be provided under a frequency and high power applied to wireless charging. Therefore, the wireless charging apparatus can be applied to a transportation means, such as an electric vehicle requiring a large amount of power transmission between a transmitter and a receiver.
    Type: Application
    Filed: March 25, 2022
    Publication date: October 19, 2023
    Inventors: Jong Hak CHOI, Tae Kyoung KIM, Nah Young KIM, Seunghwan LEE
  • Publication number: 20230057615
    Abstract: A wireless power receiver includes a receiving pad configured to receive power transmitted from a wireless power transmitter including a transmitting pad and a transmitting side resonant inductor, and a receiving side resonant network including a receiving side resonant inductor that controls power supplied to the receiving pad. Further, a first inductance of the receiving side resonant inductor and a second inductance of the transmitting side resonant inductor are determined to be different from each other.
    Type: Application
    Filed: October 7, 2022
    Publication date: February 23, 2023
    Inventors: Nah Young KIM, Seung Hwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20220410730
    Abstract: A wireless charging device according to an embodiment, can effectively discharge heat by including an insulating heat dissipation part in the inner part of a magnetic part or between the magnetic part and a coil part. Therefore, the wireless charging device can be effectively used for a transportation means such as an electric vehicle that requires high-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: November 20, 2020
    Publication date: December 29, 2022
    Inventors: Tae Kyoung KIM, Nah Young KIM, Jong Hak CHOI, Seunghwan LEE
  • Publication number: 20220416575
    Abstract: The present invention relates to a wireless charging device and a mobile means including same. Specifically, according to an embodiment of the present invention, a wireless charging device comprises: a coil unit, a magnetic unit arranged on the coil unit; and a heat transfer unit arranged in contact with at least a portion of the magnetic unit, thereby efficiently transferring heat generated in the magnetic unit to the outside and further improving heat dissipation and charging efficiency. Therefore, the wireless charging device can be advantageously used in a mobile means such as an electric vehicle requiring a large amount of power transmission between a transmitter and a receiver.
    Type: Application
    Filed: October 6, 2020
    Publication date: December 29, 2022
    Inventors: Nah Young KIM, Seunghwan LEE, Jong Hak CHOI, Tae Kyoung KIM
  • Publication number: 20220402377
    Abstract: A wireless charging apparatus according to an embodiment can improve heat dissipation and charging efficiency by adjusting the surface area of a magnetic pad. Therefore, the wireless charging apparatus can be effectively used for a transportation means, such as an electric vehicle, which requires high-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: January 27, 2021
    Publication date: December 22, 2022
    Inventors: Tae Kyoung KIM, Jong Hak CHOI, Nah Young KIM, Seunghwan LEE
  • Publication number: 20220351892
    Abstract: A wireless charging apparatus according to an embodiment may improve both the charging efficiency and the heat dissipation characteristics by use of a three-dimensional structure in a magnetic portion. In detail, the wireless charging efficiency may be increased and heat generated from the magnetic portion may be lowered by increasing the thickness of the magnetic portion near a coil portion, where electromagnetic energy is concentrated during wireless charging, and by reducing the thickness of the magnetic portion in the center, where the density of the electromagnetic energy is relatively low. Accordingly, the wireless charging apparatus can be efficiently used in a mobile means such as an electric vehicle that requires transmission of a large amount of power between a transmitter and a receiver.
    Type: Application
    Filed: October 30, 2020
    Publication date: November 3, 2022
    Inventors: Tae Kyoung KIM, Jong Hak CHOI, Nah Young KIM, Seunghwan LEE
  • Publication number: 20220332197
    Abstract: A wireless charging device according to one embodiment comprises two types of magnetic parts having different magnetic properties, wherein the two types of magnetic parts can be appropriately arranged to effectively disperse heat, generated during wireless charging, through the distribution of magnetic flux, and improve durability against external shock or distortion. Accordingly, the wireless charging device may be usefully used in a transportation means, such as an electric vehicle, that requires a large amount of power transmission between a transmitter and a receiver.
    Type: Application
    Filed: October 29, 2020
    Publication date: October 20, 2022
    Inventors: Tae Kyoung KIM, Jong Hak CHOI, Nah Young KIM, Seunghwan LEE
  • Publication number: 20220328232
    Abstract: A wireless charging device according to one implementation embodiment comprises a flow path arranged inside a magnetic unit or at an adjacent portion, and has cooling fluid flowing into the flow path so as to come in contact with the magnetic unit, and thus the heat generated during wireless charging can be readily discharged. Therefore, the wireless charging device can be effectively useful for a moving means such as an electric vehicle that requires high-capacity power transmission between a transmitter and a receiver.
    Type: Application
    Filed: October 29, 2020
    Publication date: October 13, 2022
    Inventors: Seunghwan LEE, Tae Kyoung KIM, Jong Hak CHOI, Nah Young KIM
  • Patent number: 10622719
    Abstract: An antenna device in which a conductive foil or an antenna pattern directly formed on the magnetic sheet without an insulating substrate such as polyimide, has a reduced thickness and may be prepared simple process. Also, with respect to the antenna device, flexibility may be improved by using a polymer-type magnetic sheet, and, since magnetic properties are excellent, the antenna device may be used for multiple applications such as NFC, WPC, and MST.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: April 14, 2020
    Assignee: SKC CO., LTD.
    Inventors: Tae Kyoung Kim, Jong Hwi Park, Jin Cheol Kim, Hyun Gon Moon, Jonghak Choi, Nah Young Kim
  • Patent number: 10593452
    Abstract: A magnetic sheet having improved acid/base-resistant properties, corrosion-resistance, and an excellent magnetic property at NFC, WPC, and MST frequencies, has little changes in weight and thickness even if the environment changes, for example, even after an etching treatment for patterning, or a reflow or soldering process which is performed for its application to a product.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: March 17, 2020
    Assignee: SKC CO., LTD.
    Inventors: Tae Kyoung Kim, Jong Hwi Park, Jin Cheol Kim, Jonghak Choi, Nah Young Kim, Hyun Gon Moon