Patents by Inventor Hannah Song
Hannah Song 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).
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Patent number: 11931705Abstract: Provided are a system for manufacturing dispersion liquid of carbon nanotubes and a method of manufacturing a dispersion liquid of carbon nanotubes using the same. The system includes; a mixing device supplied with solvent and carbon nanotubes, and storing a admixture of the solvent and the carbon nanotubes; a first dispersion device connected to the mixing device, performing a primary dispersion of the carbon nanotubes by an operation of a rotor and a stator, and then performing a secondary dispersion to form bent portions in the carbon nanotubes while discharging the carbon nanotubes through penetration holes of the stator; and a second dispersion device performing a tertiary dispersion of the carbon nanotubes to selectively cut the bent portions of the carbon nanotubes by irradiating a laser when the secondarily dispersed admixture recirculates to the mixing device.Type: GrantFiled: July 31, 2020Date of Patent: March 19, 2024Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Hannah Song, Daehyeon Joung, Sung Hoon Jeong
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Publication number: 20240030404Abstract: Provided are a negative electrode manufacturing method capable of forming a graphite layer oriented in one direction by using a dry process, and a negative electrode and a lithium secondary battery manufactured using the method. The manufacturing method includes: preparing a powder mixture including a plate-shaped graphite and a binder; a granulation step of preparing a graphite granule by processing the powder mixture such that graphite is oriented in one direction; preparing a graphite film in which the graphite is oriented in a thickness direction by shaping the prepared graphite granule; and laminating the graphite film on at least one surface of a negative electrode substrate.Type: ApplicationFiled: March 21, 2023Publication date: January 25, 2024Inventors: Hannah Song, Hyunjin Kim, Chan Bum Park
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Publication number: 20230369587Abstract: A method of manufacturing an all solid state battery is disclosed. In one embodiment, the method includes forming a negative electrode including a negative active material layer and a negative buffer layer, forming a sulfide-based solid electrolyte layer on a first surface of the negative electrode, forming a positive electrode including a positive active material layer and a positive buffer layer, and bonding the positive electrode to a second surface of the solid electrolyte layer.Type: ApplicationFiled: July 25, 2023Publication date: November 16, 2023Inventors: Sangwook Han, Hannah Song, Kyeong Wi Park
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Patent number: 11788619Abstract: A method for controlling a transmission of a vehicle includes: determining whether a controller receives an acceleration pedal off signal corresponding to a lift foot up (LFU) shift request signal from an acceleration pedal sensor; determining whether an output signal value of a brake pedal sensor detecting a position value of a brake pedal is less than a brake reference value when the acceleration pedal off signal is received; determining whether a gear shifting progressing rate of the transmission performing a LFU shift in response to the LFU shift request signal is less than a progressing rate reference value when an output signal value of the brake pedal sensor is equal to or greater than the brake reference value; and controlling the transmission to hold the LFU shift when the gear shifting progressing rate of the transmission is less than the progressing rate reference value.Type: GrantFiled: September 23, 2022Date of Patent: October 17, 2023Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Hoon Han, Gwangil Du, Kyeongkeun Kim, Mingyun Jo, Jae Young Choi, Hannah Song
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Patent number: 11749801Abstract: An embodiment all solid state battery includes a sulfide-based solid electrolyte layer, a negative electrode comprising a negative active material layer stacked on a first surface of the solid electrolyte layer and a negative buffer layer stacked on a first surface of the negative active material layer, and a positive electrode comprising a positive active material layer stacked on a second surface of the solid electrolyte layer and a positive buffer layer stacked on a second surface of the positive active material layer.Type: GrantFiled: August 9, 2021Date of Patent: September 5, 2023Assignees: Hyundai Motor Company, Kia CorporationInventors: Sangwook Han, Hannah Song, Kyeong Wi Park
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Publication number: 20230187602Abstract: A system for manufacturing an electrode film for a secondary battery by bonding a base material film and a pre-formed film may include a powder container configured to store mixture powder used for forming the pre-formed film, a powder supplier connected to the powder container to be supplied with the mixture powder from the powder container and configured to supply the mixture powder to a hopper while sliding in a preset direction, and a pair of pressurizing rollers disposed below the hopper and configured to form the pre-formed film by pressurizing the mixture powder discharged from the hopper between the pair of pressurizing rollers.Type: ApplicationFiled: August 30, 2022Publication date: June 15, 2023Applicants: Hyundai Motor Company, Kia CorporationInventors: Hannah SONG, Hyunjin KIM, Hyeonha LEE, Kyeong Wi PARK
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Publication number: 20230184325Abstract: A method for controlling a transmission of a vehicle includes: determining whether a controller receives an acceleration pedal off signal corresponding to a lift foot up (LFU) shift request signal from an acceleration pedal sensor; determining whether an output signal value of a brake pedal sensor detecting a position value of a brake pedal is less than a brake reference value when the acceleration pedal off signal is received; determining whether a gear shifting progressing rate of the transmission performing a LFU shift in response to the LFU shift request signal is less than a progressing rate reference value when an output signal value of the brake pedal sensor is equal to or greater than the brake reference value; and controlling the transmission to hold the LFU shift when the gear shifting progressing rate of the transmission is less than the progressing rate reference value.Type: ApplicationFiled: September 23, 2022Publication date: June 15, 2023Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Hoon Han, Gwangil Du, Kyeongkeun Kim, Mingyun Jo, Jae Young Choi, Hannah Song
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Publication number: 20230187643Abstract: The present embodiments relate to a binder, a composition for manufacturing a dry electrode comprising the same, and a method for manufacturing a dry electrode. In one embodiment, as secondary particles comprising at least one first particle, the binder may be separated from the secondary particles into the at least one first particle when stirred with a dispersion equipment.Type: ApplicationFiled: November 23, 2022Publication date: June 15, 2023Applicants: HYUNDAI MOTOR COMPANY, Kia CorporationInventors: Hyunjin KIM, Hannah SONG, Sangwook HAN, Geun Ho CHOI
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Publication number: 20230028154Abstract: A system for fabricating an electrode film for a secondary battery includes a powder film fabrication unit configured to form mixture powder with active material powder, binder powder, and conductive material powder, and fabricating a powder film roll by fibrillating the mixture powder, a base material film fabrication unit configured to form a mixture solution with carbon-based powder, the binder powder, and organic solvent, and form a base material film roll by patterning the mixture solution on a base material film, and an electrode film fabrication unit configured to dispose the base material film roll between two powder film rolls, and form an electrode film roll by overlapping and bonding the powder film and the base material film.Type: ApplicationFiled: November 11, 2021Publication date: January 26, 2023Inventors: Hannah SONG, Sangwook HAN, Kyeong Wi PARK
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Publication number: 20220199997Abstract: An embodiment all solid state battery includes a sulfide-based solid electrolyte layer, a negative electrode comprising a negative active material layer stacked on a first surface of the solid electrolyte layer and a negative buffer layer stacked on a first surface of the negative active material layer, and a positive electrode comprising a positive active material layer stacked on a second surface of the solid electrolyte layer and a positive buffer layer stacked on a second surface of the positive active material layer.Type: ApplicationFiled: August 9, 2021Publication date: June 23, 2022Inventors: Sangwook Han, Hannah Song, Kyeong Wi Park
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Publication number: 20210336241Abstract: A system for manufacturing an electrode for a secondary battery includes, a mixing unit forming a fibrillated mixture by fibrillating a powder mixture of active material powder, binder powder, and conductive material powder, a forming unit forming a mixture film by the fibrillated mixture, a pressurizing unit uniformizing a thickness of the mixture film by pressurizing rollers to form an electrode component film, first and second winding rolls each supplied and wound with the electrode component film from the pressurizing unit, a base material film roll located between first and second winding rolls and wound with a base material film, and a lamination unit configured to heat and cool to form a junction of the first electrode component film, the base material film, and the second electrode component film that are consecutively stacked.Type: ApplicationFiled: September 11, 2020Publication date: October 28, 2021Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Hannah SONG, Daehyeon JOUNG, Kyeong Wi PARK, Sung Hoon JEONG
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Publication number: 20210275977Abstract: Provided are a system for manufacturing dispersion liquid of carbon nanotubes and a method of manufacturing a dispersion liquid of carbon nanotubes using the same. The system includes; a mixing device supplied with solvent and carbon nanotubes, and storing a admixture of the solvent and the carbon nanotubes; a first dispersion device connected to the mixing device, performing a primary dispersion of the carbon nanotubes by an operation of a rotor and a stator, and then performing a secondary dispersion to form bent portions in the carbon nanotubes while discharging the carbon nanotubes through penetration holes of the stator; and a second dispersion device performing a tertiary dispersion of the carbon nanotubes to selectively cut the bent portions of the carbon nanotubes by irradiating a laser when the secondarily dispersed admixture recirculates to the mixing device.Type: ApplicationFiled: July 31, 2020Publication date: September 9, 2021Inventors: Hannah Song, Daehyeon Joung, Sung Hoon Jeong