Patents by Inventor Chae CHUNG
Chae CHUNG 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: 9796374Abstract: An overheat prevention method includes an rpm comparison step of comparing an engine revolution per minute (rpm) speed with a preset rpm speed by a controller when requiring an engagement of an engine clutch, a temperature comparison step of comparing a temperature of a transmission clutch with a preset temperature by the controller when it is determined that the engine rpm speed is less than the preset rpm speed at the rpm comparison step, and a serial drive mode control step of releasing the engine clutch and engaging the transmission clutch, and controlling a hybrid starter generator (HSG) to charge a battery using engine power to provide driving power to a motor by the controller when it is determined that the temperature of the transmission clutch is higher than the preset temperature at the temperature comparison step.Type: GrantFiled: June 29, 2016Date of Patent: October 24, 2017Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Chang Min Lee, Sung Chan Na, Kwon Chae Chung, Jun Geol Song
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Patent number: 9793725Abstract: The present invention relates to a technology capable of improving the use time of a battery cell by generally or individually controlling charge or discharge with respect to a multi-battery cell by using LC serial resonance in a module with a multi-battery cell structure. To this end, the present invention includes a battery module including a plurality of serially connected battery cells, a serial resonant circuit including serially connected inductor and capacitor and performing a serial resonant function, and first to third switch units that set an electric energy collection path and an electric energy supply path between the battery module and the serial resonant circuit.Type: GrantFiled: March 20, 2013Date of Patent: October 17, 2017Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Chang Hyeon Sung, Kyung Min Lee, Yoo Chae Chung, Bong Koo Kang
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Publication number: 20170291595Abstract: A driving mode control method and apparatus of a hybrid electric vehicle are provided. The driving mode control method includes decreasing a torque of an engine when a first driving mode in which both the engine and a first motor are driven is switched to a second driving mode driven by the first motor and applying a torque of a second motor. A clutch is then opened when a difference between the engine torque and the second motor torque is less than a first threshold torque.Type: ApplicationFiled: September 14, 2016Publication date: October 12, 2017Inventors: Sang Joon Kim, Seong Ik Park, Kwon Chae Chung, Il Kwon Park
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Publication number: 20170259804Abstract: An overheat prevention method includes an rpm comparison step of comparing an engine revolution per minute (rpm) speed with a preset rpm speed by a controller when requiring an engagement of an engine clutch, a temperature comparison step of comparing a temperature of a transmission clutch with a preset temperature by the controller when it is determined that the engine rpm speed is less than the preset rpm speed at the rpm comparison step, and a serial drive mode control step of releasing the engine clutch and engaging the transmission clutch, and controlling a hybrid starter generator (HSG) to charge a battery using engine power to provide driving power to a motor by the controller when it is determined that the temperature of the transmission clutch is higher than the preset temperature at the temperature comparison step.Type: ApplicationFiled: June 29, 2016Publication date: September 14, 2017Inventors: Chang Min LEE, Sung Chan NA, Kwon Chae CHUNG, Jun Geol SONG
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Patent number: 9630613Abstract: An apparatus for controlling an engine clutch of a hybrid vehicle includes an engine for providing driving power of the vehicle through combustion of a fuel, a motor for providing driving power of the vehicle by electric energy, a battery connected to the motor, and providing electric energy to the motor, an engine clutch for selectively connecting the engine and a driving shaft, and a control unit for measuring a real-time engine torque, revising a predetermined release delay time of the engine clutch according to a change rate of the real-time engine torque, and maintaining a lock-up of the engine clutch for the revised release delay time of the engine clutch when a hybrid travelling mode is switched to an electric travelling mode.Type: GrantFiled: November 3, 2015Date of Patent: April 25, 2017Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Il Kwon Park, Kwon Chae Chung, Hoon Han
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Publication number: 20160368470Abstract: An apparatus for controlling an engine clutch of a hybrid vehicle includes an engine for providing driving power of the vehicle through combustion of a fuel, a motor for providing driving power of the vehicle by electric energy, a battery connected to the motor, and providing electric energy to the motor, an engine clutch for selectively connecting the engine and a driving shaft, and a control unit for measuring a real-time engine torque, revising a predetermined release delay time of the engine clutch according to a change rate of the real-time engine torque, and maintaining a lock-up of the engine clutch for the revised release delay time of the engine clutch when a hybrid travelling mode is switched to an electric travelling mode.Type: ApplicationFiled: November 3, 2015Publication date: December 22, 2016Inventors: Il Kwon PARK, Kwon Chae CHUNG, Hoon HAN
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Publication number: 20160276847Abstract: The present invention relates to a method for more efficiently performing a balancing operation for a plurality of battery cells of which charges are not equal, in a battery cell balancing circuit using an LC series resonant circuit. The method may include calculating balancing charge for all battery cells of which the charges are not equal, selecting the strongest battery cell storing the highest charge and the weakest battery cell corresponding to the strongest battery cell, among the entire battery cells, and performing a series of balancing operations.Type: ApplicationFiled: March 9, 2016Publication date: September 22, 2016Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Bong Koo KANG, Kyung Min LEE, Yoo Chae CHUNG, Chang Hyeon SUNG
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Patent number: 9376105Abstract: An apparatus and a method for controlling an engine clutch of a hybrid electric vehicle may include a driving information detector to detect demand information for driving and state information of the hybrid electric vehicle, an engine clutch selectively connecting an engine and a motor generating power, and a controller receiving information from the driving information detector and changing a driving mode of the hybrid electric vehicle by controlling an operation of the engine clutch, in which the controller controls standby hydraulic pressure of the engine clutch differently according to a mode changing condition when the driving mode of the hybrid electric is changed from an Electric Vehicle (EV) mode to a Hybrid Electric Vehicle (HEV) mode.Type: GrantFiled: August 22, 2014Date of Patent: June 28, 2016Assignee: Hyundai Motor CompanyInventors: Soo Bang Lee, Kwon Chae Chung, Seong Ik Park
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Patent number: 9285420Abstract: Disclosed is an apparatus for spinning a test tray and an in-line test handler including the above apparatus, wherein the apparatus may include a supporting unit for supporting a test tray transported between first and second chamber units facing in the different directions, wherein the first chamber unit is provided at a predetermined interval from the second chamber unit; a base unit to which the supporting unit is spinnably connected; and a spinning unit which spins the test tray so that semiconductor devices received in the test tray are tested at the same arrangement in each of the first chamber unit and the second chamber unit.Type: GrantFiled: January 22, 2014Date of Patent: March 15, 2016Assignee: MIRAE CORPORATIONInventors: Kyung Tae Kim, Chan Ho Park, Jae Gue Lee, Ung Hyun Yoo, Hae Jun Park, Kook Hyung Lee, Hyun Chae Chung, Jang Yong Park
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Patent number: 9203246Abstract: Provided is a battery cell balancing circuit including: a battery cell module including a plurality of battery cells connected in series; a series resonant circuit including an inductor unit and a capacitor unit which are connected in series so as to store electric energy recovered from a corresponding battery cell of the battery cell module and supply the stored electric energy to a corresponding battery cell of the battery cell module; and a switch unit configured to provide an electric energy recovery path for storing the electric energy recovered from the corresponding battery cell of the battery cell module into the capacitor unit of the series resonant circuit and provide an electric energy supply path for supplying the stored electric energy to the corresponding battery cell of the battery cell module.Type: GrantFiled: October 28, 2013Date of Patent: December 1, 2015Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Bong Koo Kang, Chang Hyeon Sung, Hyung Jin Choe, Ho Young Yoon, Min Gi Cho, Yoo Chae Chung, Kyung Min Lee
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Publication number: 20150340886Abstract: The present invention relates to a technology capable of improving the use time of a battery cell by generally or individually controlling charge or discharge with respect to a multi-battery cell by using LC serial resonance in a module with a multi-battery cell structure. To this end, the present invention includes a battery module including a plurality of serially connected battery cells, a serial resonant circuit including serially connected inductor and capacitor and performing a serial resonant function, and first to third switch units that set an electric energy collection path and an electric energy supply path between the battery module and the serial resonant circuit.Type: ApplicationFiled: March 20, 2013Publication date: November 26, 2015Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Chang Hyeon SUNG, Kyung Min LEE, Yoo Chae CHUNG, Bong Koo KANG
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Publication number: 20150166052Abstract: An apparatus and a method for controlling an engine clutch of a hybrid electric vehicle may include a driving information detector to detect demand information for driving and state information of the hybrid electric vehicle, an engine clutch selectively connecting an engine and a motor generating power, and a controller receiving information from the driving information detector and changing a driving mode of the hybrid electric vehicle by controlling an operation of the engine clutch, in which the controller controls standby hydraulic pressure of the engine clutch differently according to a mode changing condition when the driving mode of the hybrid electric is changed from an Electric Vehicle (EV) mode to a Hybrid Electric Vehicle (HEV) mode.Type: ApplicationFiled: August 22, 2014Publication date: June 18, 2015Applicant: Hyundai Motor CompanyInventors: Soo Bang Lee, Kwon Chae Chung, Seong Ik Park
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Publication number: 20140340022Abstract: Provided is a battery cell balancing circuit including: a battery cell module including a plurality of battery cells connected in series; a series resonant circuit including an inductor unit and a capacitor unit which are connected in series so as to store electric energy recovered from a corresponding battery cell of the battery cell module and supply the stored electric energy to a corresponding battery cell of the battery cell module; and a switch unit configured to provide an electric energy recovery path for storing the electric energy recovered from the corresponding battery cell of the battery cell module into the capacitor unit of the series resonant circuit and provide an electric energy supply path for supplying the stored electric energy to the corresponding battery cell of the battery cell module.Type: ApplicationFiled: October 28, 2013Publication date: November 20, 2014Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Bong Koo Kang, Chang Hyeon Sung, Hyung Jin Choe, Ho Young Yoon, Min Gi Cho, Yoo Chae Chung, Kyung Min Lee
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Publication number: 20140203832Abstract: Disclosed is an apparatus for spinning a test tray and an in-line test handler including the above apparatus, wherein the apparatus may include a supporting unit for supporting a test tray transported between first and second chamber units facing in the different directions, wherein the first chamber unit is provided at a predetermined interval from the second chamber unit; a base unit to which the supporting unit is spinnably connected; and a spinning unit which spins the test tray so that semiconductor devices received in the test tray are tested at the same arrangement in each of the first chamber unit and the second chamber unit.Type: ApplicationFiled: January 22, 2014Publication date: July 24, 2014Applicant: MIRAE CORPORATIONInventors: Kyung Tae KIM, Chan Ho PARK, Jae Gue LEE, Ung Hyun YOO, Hae Jun PARK, Kook Hyung LEE, Hyun Chae CHUNG, Jang Yong PARK
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Patent number: 8709979Abstract: Disclosed herein is a method of preparing a MgB2 superconducting wire and the MgB2 superconducting wire prepared thereby. The method comprising rolling a raw powder by using a powder rolling method. According to the method of the present invention has an effect of increasing an effective area where superconducting current can flow by improvement of the connectivity of a MgB2 superconducting powder and achievement of high density through a powder rolling process, and maintaining an uniform current value even in a large length because of the improvement of the connectivity.Type: GrantFiled: July 2, 2010Date of Patent: April 29, 2014Assignee: Korea Institute of Machinery and MaterialsInventors: Kook-Chae Chung, Tae-Hoon Kim, Soon-Tae Ahn, Bharat Sinha Bhavesh
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Publication number: 20120094841Abstract: Disclosed herein is a method of preparing a MgB2 superconducting wire and the MgB2 superconducting wire prepared thereby. The method comprising rolling a raw powder by using a powder rolling method. According to the method of the present invention has an effect of increasing an effective area where superconducting current can flow by improvement of the connectivity of a MgB2 superconducting powder and achievement of high density through a powder rolling process, and maintaining an uniform current value even in a large length because of the improvement of the connectivity.Type: ApplicationFiled: July 2, 2010Publication date: April 19, 2012Applicant: Korea Institute of Machinery and MaterialsInventors: Kook-Chae Chung, Tae-Jeong Jeong, Gyu-Chae Choi, Tae-Hoon Kim, Tae-Soo Lim, Young-Kuk Kim, Soon-Tae Ahn
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Patent number: 8030247Abstract: Disclosed herein is a precursor solution for forming a biaxially oriented buffer layer through low-temperature heat treatment, by which a highly oriented buffer layer can be formed even when the precursor solution is heat-treated at a low temperature of 1000° C. or lower at the time of forming a buffer layer through a wet chemical method. The precursor solution is prepared by adding a carboxylate or an alkoxide of bismuth, boron, lead, gallium, or the like, which is a metal salt for forming an oxide having a low melting point of 1200° C. or lower after pyrolysis in an oxygen atmosphere, to a precursor solution for forming a buffer layer through a wet chemical method.Type: GrantFiled: January 12, 2007Date of Patent: October 4, 2011Assignee: Korea Institute of Machinery & MaterialsInventors: Jai-Moo Yoo, Young-Kuk Kim, Jae-Woong Ko, Kook-Chae Chung
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Publication number: 20090302282Abstract: Disclosed herein is a precursor solution for forming a biaxially oriented buffer layer through low-temperature heat treatment, by which a highly oriented buffer layer can be formed even when the precursor solution is heat-treated at a low temperature of 1000° C. or lower at the time of forming a buffer layer through a wet chemical method. The precursor solution is prepared by adding a carboxylate or an alkoxide of bismuth, boron, lead, gallium, or the like, which is a metal salt for forming an oxide having a low melting point of 1200° C. or lower after pyrolysis in an oxygen atmosphere, to a precursor solution for forming a buffer layer through a wet chemical method.Type: ApplicationFiled: January 12, 2007Publication date: December 10, 2009Inventors: Jai-Moo Yoo, Young-Kuk Kim, Jae-Woong Ko, Kook-Chae Chung
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Patent number: 7402230Abstract: The present invention is provided to manufacture a low magnetic loss metal tape with biaxial texture and a manufacturing method thereof. The low magnetic loss metal tape has a non-magnetic metal layer deposited on a nickel layer in the form of stack. The low magnetic loss metal tape with biaxial texture is manufactured by the following steps. A biaxially textured nickel layer is formed on a surface of cathode rotating in an electroplating bath including a cathode with single crystalline structure or similarly high orientation, and an anode made of high purity nickel. The nickel layer formed on the cathode is then washed in a water bath. Subsequently, a non-magnetic metal layer is formed on the washed nickel layer rotating in a plating bath with a non-magnetic metal solution. The metal tape is finally manufactured by delaminating and winding the nickel/non-magnetic metal layers.Type: GrantFiled: March 7, 2005Date of Patent: July 22, 2008Assignee: Korea Institute of Machinery and MaterialsInventors: Jai-Moo Yoo, Young-Kuk Kim, Jae-Woong Ko, Kook-Chae Chung
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Publication number: 20080079000Abstract: A display panel has a protection film having a recess. The recess is arranged above a storage electrode and corresponds to a location of the storage electrode in a plan view. A width of the recess is larger in plan view than a width of the storage electrode, and a pixel electrode is arranged on the protection film. The capacitance of a storage capacitor formed by charges stored in the pixel electrode and the storage electrode is determined by a thickness of the protection film and an overlapping area of the pixel electrode and the storage electrode.Type: ApplicationFiled: September 5, 2007Publication date: April 3, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chae CHUNG, Jeong LEE, Yong LEE