Patents by Inventor Hae Wook KIM
Hae Wook 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: 20240128605Abstract: Provided are an electrode assembly, a battery, and a battery pack and vehicle including the same. An electrode assembly, in which a first electrode, a second electrode, and a separator interposed therebetween are wound about an axis to define a core and an outer circumferential surface. At least one of the first electrode and the second electrode includes, at a long side end portion, an uncoated portion exposed beyond the separator in a direction of the axis. At least a part of the uncoated portion is bent in a radial direction of the electrode assembly to define a bent surface region having overlapping layers of the uncoated portion. The bent surface region includes a welding target region having a number of the overlapping layers of the uncoated portion, and the welding target region extends along a radial direction of the electrode assembly.Type: ApplicationFiled: February 18, 2022Publication date: April 18, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Min-Woo KIM, Do-Gyun KIM, Kyung-Wook CHO, Geon-Woo MIN, Min-Ki JO, Jae-Woong KIM, Kwang-Su HWANGBO, Hae-Jin LIM, Su-Ji CHOI, Jae-Won LIM, Hak-Kyun KIM, Je-Jun LEE, Ji-Min JUNG
-
Publication number: 20240079584Abstract: The present disclosure discloses a positive electrode active material for a lithium secondary battery comprising a secondary particle having an average particle size (D50) of 1 to 15 ?m, formed by agglomeration of at least two primary macro particles having an average particle size (D50) of 0.1 to 3 ?m; and a coating layer of a lithium-metal oxide on a surface of the secondary particle, wherein the primary macro particles are represented by LiaNi1-x-yCoxM1yM2wO2 (1.0?a?1.5, 0?x?0.2, 0?y?0.2, 0?w?0.1, 0?x+y?0.2, M1 includes at least one metal of Mn or Al, and M2 includes at least one metal selected from the group consisting of Ba, Ca, Zr, Ti, Mg, Ta, Nb and Mo), and wherein the lithium-metal oxide is a low-temperature phase LixCoO2(0<x?1) having at least one of a spinel structure (Fd-3m) or a disordered rock-salt structure (Fm-3m).Type: ApplicationFiled: February 7, 2022Publication date: March 7, 2024Applicant: LG Energy Solution, Ltd.Inventors: Jong-Wook Heo, Ji-Hye Kim, Tae-Gu Yoo, Wang-Mo Jung, Hae-Jung Jung, Chi-Ho Jo
-
Patent number: 9887618Abstract: There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a transformer configured to supply output voltage by converting voltage of the DC power rectified by the rectifier, and a Pulse Width Modulation (PWM) control module configured to output voltage by switching a power switching device connected to the transformer, configured to drive the power supply device by connecting power of an HV pin to a VCC pin, and configured to determine an AC-off state by sensing voltage rectified by the rectifier.Type: GrantFiled: April 22, 2014Date of Patent: February 6, 2018Assignee: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan Cui, James Jung, Hae Wook Kim, Young Gi Ryu, Julie Jang
-
Patent number: 9510414Abstract: A light emitting diode (LED) driving circuit includes a flicker elimination unit configured to perform a flicker removal for LED modules and a driving control unit configured to pause a procedure of the flicker removal based on an AC input voltage that is regulated through a Triode for Alternating Current (TRIAC) dimmer, so as to cause a brightness of the LED modules to be dimmed. Therefore, the LED driving circuit selectively adjusts an LED brightness level and removes LED flicker by using a TRIAC dimmer and controls the brightness level of the LED module based on a dimming level.Type: GrantFiled: June 16, 2015Date of Patent: November 29, 2016Assignee: Magnachip Semiconductor, Ltd.Inventors: Hae Wook Kim, Brent Rowe, Hyun Jung Kim, Paul Greenland, Seung Hwan Lee
-
Patent number: 9502975Abstract: Provided is a switch control circuit for controlling a current control switch of a power supply, the power supply including a load, an inductor and the current control switch that are series-coupled to an input power. The switch control circuit includes a current measuring unit configured to measure a current flowing into the load, a current integral unit configured to integrate the measured current, a comparison unit configured to compare the integrated current value and a reference value and a control unit coupled to the current control switch, the control unit being configured to turn off the current control switch when the integrated current is substantially the same as the reference value and turn on the current control switch when a predefined off-time elapses from a time when the current control switch is turned off. The switch control circuit may quickly and accurately control an average current.Type: GrantFiled: November 7, 2014Date of Patent: November 22, 2016Assignee: Magnachip Semiconductor, Ltd.Inventors: Doo Soo Shin, Youn Ggi Ryu, Zhi Yuan Cui, Hae Wook Kim, In Ho Hwang
-
Patent number: 9438121Abstract: A power converter according to examples reduces standby power consumption. The power converter includes a rectifier configured to rectify AC power into DC power, a transformer configured to output power by converting a voltage of DC power rectified by the rectifier, a PWM control module configured to control an output power by switching a power switching device connected to the transformer, a first external switch configured to provide a disable signal, a first capacitor that is connected in parallel to one side of the first external switch, a second external switch configured to provide an enable signal, and a second capacitor that is connected in parallel to one side of the second external switch.Type: GrantFiled: April 22, 2014Date of Patent: September 6, 2016Assignee: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan Cui, Young Gi Ryu, James Jung, Hae Wook Kim, Julie Jang
-
Publication number: 20160100466Abstract: A light emitting diode (LED) driving circuit includes a flicker elimination unit configured to perform a flicker removal for LED modules and a driving control unit configured to pause a procedure of the flicker removal based on an AC input voltage that is regulated through a Triode for Alternating Current (TRIAC) dimmer, so as to cause a brightness of the LED modules to be dimmed. Therefore, the LED driving circuit selectively adjusts an LED brightness level and removes LED flicker by using a TRIAC dimmer and controls the brightness level of the LED module based on a dimming level.Type: ApplicationFiled: June 16, 2015Publication date: April 7, 2016Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Hae Wook KIM, Brent ROWE, Hyun Jung KIM, Paul GREENLAND, Seung Hwan LEE
-
Publication number: 20150256068Abstract: Provided is a switch control circuit for controlling a current control switch of a power supply, the power supply including a load, an inductor and the current control switch that are series-coupled to an input power. The switch control circuit includes a current measuring unit configured to measure a current flowing into the load, a current integral unit configured to integrate the measured current, a comparison unit configured to compare the integrated current value and a reference value and a control unit coupled to the current control switch, the control unit being configured to turn off the current control switch when the integrated current is substantially the same as the reference value and turn on the current control switch when a predefined off-time elapses from a time when the current control switch is turned off. The switch control circuit may quickly and accurately control an average current.Type: ApplicationFiled: November 7, 2014Publication date: September 10, 2015Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Doo Soo SHIN, Youn Ggi RYU, Zhi Yuan CUI, Hae Wook KIM, In Ho HWANG
-
Publication number: 20150003123Abstract: There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a transformer configured to supply output voltage by converting voltage of the DC power rectified by the rectifier, and a Pulse Width Modulation (PWM) control module configured to output voltage by switching a power switching device connected to the transformer, configured to drive the power supply device by connecting power of an HV pin to a VCC pin, and configured to determine an AC-off state by sensing voltage rectified by the rectifier.Type: ApplicationFiled: April 22, 2014Publication date: January 1, 2015Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Zhi Yuan CUI, James JUNG, Hae Wook KIM, Young Gi RYU, Julie JANG
-
Publication number: 20150003122Abstract: There is provided a power converter for reducing standby power consumption. The power converter includes a rectifier configured to rectify AC power into DC power, a transformer configured to output power by converting a voltage of DC power rectified by the rectifier, a PWM control module configured to control an output power by switching a power switching device connected to the transformer, a first external switch configured to provide a disable signal, a first capacitor that is connected in parallel to one side of the first external switch, a second external switch configured to provide an enable signal, and a second capacitor that is connected in parallel to one side of the second external switch.Type: ApplicationFiled: April 22, 2014Publication date: January 1, 2015Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Zhi Yuan CUI, Young Gi RYU, James JUNG, Hae Wook KIM, Julie JANG