Patents by Inventor Jeong Hee Choi
Jeong Hee Choi 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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Publication number: 20240337574Abstract: The present invention relates to a method for monitoring the quality of red pepper powder, comprising the steps of: estimating at least one of a first particle size and a first moisture content of a first red pepper powder, based on the spectroscopic image data of the first red pepper powder obtained in or before and after at least one of the grinding process, filtration process and sterilization process of red pepper powder; calculating a second spicy level, based on at least one of the first particle size and the first moisture content, and the spectroscopic image data; and estimating a third spicy level of a first mixed red pepper powder in the mixing process, based on at least one of the first particle size and the first moisture content, the second spicy level, and an input amount of the first red pepper powder.Type: ApplicationFiled: September 13, 2023Publication date: October 10, 2024Applicant: KOREA FOOD RESEARCH INSTITUTEInventors: Jeong-ho LIM, Kee-jai PARK, Gyeongsik OK, Jeongseok CHO, Dae-Yong YUN, Seul-Ki PARK, Gyuseok LEE, Jeong Hee CHOI, Kyung-Hyung KU, Sangseop KIM, Jihyun LEE, Hahyeong YU, Ji-Young CHOI
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Patent number: 12107264Abstract: The present invention provides a method for preparing an anode active material for a nonaqueous lithium secondary battery, comprising the steps of: preparing a carbon-based material; forming a precursor coating layer comprising Me and A (wherein A is O or S) on the surface of the carbon-based material; supplying a P precursor to the precursor coating layer of the carbon-based material; and converting at least a part of the precursor coating layer into a compound represented by Mex1Py1 (wherein x1>0 and y1>0) by the reaction of the precursor coating layer and the P precursor, thereby forming a phosphide coating layer, wherein Me is at least one type of the same metal element selected from among Mo, Ni, Fe, Co, Ti, V, Cr, Nb and Mn.Type: GrantFiled: May 13, 2020Date of Patent: October 1, 2024Assignees: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITYInventors: Sang Min Lee, Min-Sik Park, Chul Ho Lee, Jeong Hee Choi
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Patent number: 11616234Abstract: Disclosed is a rapidly rechargeable lithium secondary battery. The present invention provides a negative electrode for a lithium secondary battery, the negative electrode being characterized by including: a current collector; a negative electrode material layer which is formed on the current collector and includes negative electrode active material particles, conductive material particles, and a binder; and a surface layer which is formed on the surface of the negative electrode material layer, is formed of insulating particles that are inert with respect to lithium, and partially shields the negative electrode material layer. According to the present invention, a negative electrode for a lithium secondary battery having a high charging speed without lifetime degradation can be provided.Type: GrantFiled: November 2, 2018Date of Patent: March 28, 2023Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTEInventors: Jeong Hee Choi, Sang Min Lee, Min Ho Lee, Cheol Ho Lee, Jong Wook Bae
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Patent number: 11522196Abstract: The present invention relates to an anode active material, a nonaqueous lithium secondary battery comprising the same, and a preparation method therefor, and the purpose of the present invention is to improve high-rate charging characteristics without deterioration of charging and discharging efficiency and lifetime characteristics when applying an amorphous carbon coating layer as the anode active material of the nonaqueous lithium secondary battery, wherein the amorphous carbon coating layer comprising MoPx particles composed of MoP and MoP2 is formed on the surface of a carbon-based material, thereby reducing resistance when intercalating lithium ions into the surface of the carbon-based material, and improving reactivity and structural stability of the surface. The anode active material according to the present invention comprises a carbon-based material, and an amorphous carbon coating layer comprising MoPx particles composed of MoP and MoP2 formed on the surface of the carbon-based material.Type: GrantFiled: November 14, 2018Date of Patent: December 6, 2022Assignees: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITYInventors: Sang Min Lee, Min Sik Park, Gum Jae Park, Ha Young Lim, Jeong Hee Choi
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Publication number: 20220216462Abstract: The present invention provides a method for preparing an anode active material for a nonaqueous lithium secondary battery, comprising the steps of: preparing a carbon-based material; forming a precursor coating layer comprising Me and A (wherein A is O or S) on the surface of the carbon-based material; supplying a P precursor to the precursor coating layer of the carbon-based material; and converting at least a part of the precursor coating layer into a compound represented by Mex1Py1 (wherein x1>0 and y1>0) by the reaction of the precursor coating layer and the P precursor, thereby forming a phosphide coating layer, wherein Me is at least one type of the same metal element selected from among Mo, Ni, Fe, Co, Ti, V, Cr, Nb and Mn.Type: ApplicationFiled: May 13, 2020Publication date: July 7, 2022Inventors: Sang Min LEE, Min-Sik PARK, Chul Ho LEE, Jeong Hee CHOI
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Publication number: 20200395617Abstract: The present invention relates to an anode active material, a nonaqueous lithium secondary battery comprising the same, and a preparation method therefor, and the purpose of the present invention is to improve high-rate charging characteristics without deterioration of charging and discharging efficiency and lifetime characteristics when applying an amorphous carbon coating layer as the anode active material of the nonaqueous lithium secondary battery, wherein the amorphous carbon coating layer comprising MoPx particles composed of MoP and MoP2 is formed on the surface of a carbon-based material, thereby reducing resistance when intercalating lithium ions into the surface of the carbon-based material, and improving reactivity and structural stability of the surface. The anode active material according to the present invention comprises a carbon-based material, and an amorphous carbon coating layer comprising MoPx particles composed of MoP and MoP2 formed on the surface of the carbon-based material.Type: ApplicationFiled: November 14, 2018Publication date: December 17, 2020Inventors: Sang Min LEE, Min Sik PARK, Gum Jae PARK, Ha Young LIM, Jeong Hee CHOI
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Publication number: 20200328422Abstract: Disclosed is a rapidly rechargeable lithium secondary battery. The present invention provides a negative electrode for a lithium secondary battery, the negative electrode being characterized by including: a current collector; a negative electrode material layer which is formed on the current collector and includes negative electrode active material particles, conductive material particles, and a binder; and a surface layer which is formed on the surface of the negative electrode material layer, is formed of insulating particles that are inert with respect to lithium, and partially shields the negative electrode material layer. According to the present invention, a negative electrode for a lithium secondary battery having a high charging speed without lifetime degradation can be provided.Type: ApplicationFiled: November 2, 2018Publication date: October 15, 2020Inventors: Jeong Hee CHOI, Sang Min LEE, Min Ho LEE, Cheol Ho LEE, Jong Wook BAE
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Patent number: 10481148Abstract: Provided are a cell line stably expressing voltage-gated sodium channel (Nav1.5), wherein a SCN5A gene (NCBI accession no. NM_198056) encoding Nav1.5 and a puromycin selection marker are inserted into a chromosome of a host cell, and a method of measuring cardiotoxicity of a test substance comprising: (1) contacting a test substance to the cell line of claim 1; and (2) measuring magnitude of voltage-gated sodium channel (Nav1.5) in the cell line in contact with the test substance.Type: GrantFiled: February 28, 2017Date of Patent: November 19, 2019Assignee: THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Jin-Sung Choi, Jeong Hee Choi
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Patent number: 10026944Abstract: Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, the electrode tabs are electrically connected to an electrode lead, and the pluralities of electrode tabs are joined to the top and the bottom of the electrode lead at an electrode lead-electrode tabs joint portion such that the resistance difference between electrodes at the electrode lead-electrode tabs joint portion is minimized. Also disclosed is an electrochemical cell including the electrode assembly.Type: GrantFiled: September 3, 2015Date of Patent: July 17, 2018Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jeong Hee Choi, Kwangho Yoo, Youngjoon Shin
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Publication number: 20180080924Abstract: Provided are a cell line stably expressing voltage-gated sodium channel (Nav1.5), wherein a SCN5A gene (NCBI accession no. NM_198056) encoding Nav1.5 and a puromycin selection marker are inserted into a chromosome of a host cell, and a method of measuring cardiotoxicity of a test substance comprising: (1) contacting a test substance to the cell line of claim 1; and (2) measuring magnitude of voltage-gated sodium channel (Nav1.5) in the cell line in contact with the test substance.Type: ApplicationFiled: February 28, 2017Publication date: March 22, 2018Applicant: THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Jin-Sung CHOI, Jeong Hee CHOI
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Patent number: 9705112Abstract: Disclosed herein is a secondary battery constructed in a structure in which an electrode assembly having a cathode/separator/anode arrangement is mounted in a battery case made of a laminate sheet including a resin layer and a metal layer, electrode tabs of the electrode assembly are coupled to corresponding electrode leads, and the electrode assembly is sealed in the battery case while electrode leads are exposed to the outside of the battery case, wherein a protective film is attached to coupling regions between the electrode tabs and the electrode leads for sealing the coupling regions between the electrode tabs and the electrode leads. The secondary battery according to the present invention is constructed in a structure in which the coupling regions are sealed by the protective film, unlike a conventional secondary battery constructed in a structure in which the coupling regions between the electrode tabs and the electrode leads are exposed in the battery case.Type: GrantFiled: June 26, 2014Date of Patent: July 11, 2017Assignee: LG Chem, Ltd.Inventors: Youngjoon Shin, Min Su Kim, Junill Yoon, Ji Heon Ryu, Jeong Hee Choi, Seung-Jin Yang
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Patent number: 9385399Abstract: Disclosed herein is a secondary battery having a mechanical connection sensor, as a safety device, fixed to the outer surface of a prismatic or pouch-shaped battery cell while the mechanical connection sensor is set to OFF. The mechanical connection sensor is connected in series with a resistor having a predetermined resistance value and with a cathode and an anode of the battery cell. When the battery cell swells to a critical value or more due to the abnormal operation of the battery cell, the mechanical connection sensor is turned ON, and therefore, the mechanical connection sensor conducts with the result that the electrical energy of the battery cell is consumed at the resistor. In the secondary battery having the safety device according to the present invention, when the battery swells due to the abnormal response of the battery, energy accumulated in the battery is forcibly consumed, unlike a conventional battery that merely intercepts the current.Type: GrantFiled: September 7, 2006Date of Patent: July 5, 2016Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jin Woong Ha, Jeong Hee Choi, Youngjoon Shin
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Patent number: 9246154Abstract: Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, the electrode tabs are electrically connected to an electrode lead, and the pluralities of electrode tabs are joined to the top and the bottom of the electrode lead at an electrode lead-electrode tabs joint portion such that the resistance difference between electrodes at the electrode lead-electrode tabs joint portion is minimized. Also disclosed is an electrochemical cell including the electrode assembly.Type: GrantFiled: June 9, 2010Date of Patent: January 26, 2016Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jeong Hee Choi, Kwangho Yoo, Youngjoon Shin
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Publication number: 20150380717Abstract: Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, the electrode tabs are electrically connected to an electrode lead, and the pluralities of electrode tabs are joined to the top and the bottom of the electrode lead at an electrode lead-electrode tabs joint portion such that the resistance difference between electrodes at the electrode lead-electrode tabs joint portion is minimized. Also disclosed is an electrochemical cell including the electrode assembly.Type: ApplicationFiled: September 3, 2015Publication date: December 31, 2015Applicant: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jeong Hee Choi, Kwangho Yoo, Youngjoon Shin
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Patent number: 8956743Abstract: Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the secondary battery has at least one-way exhaust member, mounted at a sealed portion, formed at the outer circumference of an electrode assembly receiving part of the battery case, for allowing internal high-pressure gas to be exhausted out of a battery cell and preventing external gas from being introduced into the battery cell. The secondary battery according to the present invention has the effect of effectively exhausting internal high-pressure gas generated during the abnormal operation of the battery, such as overcharge, out of the battery case, while maintaining the sealability of the battery case, thereby simultaneously improving the efficiency and safety of the battery.Type: GrantFiled: October 28, 2011Date of Patent: February 17, 2015Assignee: LG Chem, Ltd.Inventors: Seung-Jin Yang, Jeong Hee Choi, Hanho Lee, Ji Heon Ryu
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Publication number: 20140356697Abstract: Disclosed herein is a secondary battery constructed in a structure in which an electrode assembly having a cathode/separator/anode arrangement is mounted in a battery case made of a laminate sheet including a resin layer and a metal layer, electrode tabs of the electrode assembly are coupled to corresponding electrode leads, and the electrode assembly is sealed in the battery case while electrode leads are exposed to the outside of the battery case, wherein a protective film is attached to coupling regions between the electrode tabs and the electrode leads for sealing the coupling regions between the electrode tabs and the electrode leads. The secondary battery according to the present invention is constructed in a structure in which the coupling regions are sealed by the protective film, unlike a conventional secondary battery constructed in a structure in which the coupling regions between the electrode tabs and the electrode leads are exposed in the battery case.Type: ApplicationFiled: June 26, 2014Publication date: December 4, 2014Applicant: LG Chem, Ltd.Inventors: Youngjoon Shin, Min Su Kim, Junill Yoon, Ji Heon Ryu, Jeong Hee Choi, Seung-Jin Yang
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Patent number: 8846243Abstract: Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, electrode leads are located at one-side ends of the stacked electrode tabs such that the electrode leads are electrically connected to the electrode tabs, and protruding lengths of the electrode tabs are gradually increased according to the distances between the electrode leads and the electrode tabs, whereby the lengths of the electrode tabs at joint portions between the electrode tabs and the electrode leads are the same. Also disclosed is an electrochemical cell including the electrode assembly.Type: GrantFiled: July 14, 2007Date of Patent: September 30, 2014Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Eun Ju Lee, Jeong Hee Choi, Youngjoon Shin
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Patent number: 8795883Abstract: Disclosed herein is a secondary battery constructed in a structure in which an electrode assembly having a cathode/separator/anode arrangement is mounted in a battery case made of a laminate sheet including a resin layer and a metal layer, electrode tabs of the electrode assembly are coupled to corresponding electrode leads, and the electrode assembly is sealed in the battery case while electrode leads are exposed to the outside of the battery case, wherein a protective film is attached to coupling regions between the electrode tabs and the electrode leads for sealing the coupling regions between the electrode tabs and the electrode leads. The secondary battery according to the present invention is constructed in a structure in which the coupling regions are sealed by the protective film, unlike a conventional secondary battery constructed in a structure in which the coupling regions between the electrode tabs and the electrode leads are exposed in the battery case.Type: GrantFiled: November 2, 2006Date of Patent: August 5, 2014Assignee: LG Chem, Ltd.Inventors: Youngjoon Shin, Min Su Kim, Junill Yoon, Ji Heon Ryu, Jeong Hee Choi, Seung-Jin Yang
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Patent number: 8778523Abstract: Disclosed herein is an electrochemical cell constructed in a structure in which a plurality of full cells or bicells, as unit cells, are folded by a separation film formed in the shape of a long sheet, and separators of the unit cells are secured to the separation film by thermal welding. The electrochemical cell according to the present invention has the effect of preventing the electrodes of the stacked electrodes from being separated from the separation film or from being twisted due to external impacts and vibrations, thereby restraining the electrochemical cell from generating heat or catching fire. Furthermore, the structural stability of the electrochemical cell is maintained even when the temperature of the electrochemical cell is increased, or the volume of the electrochemical cell is increased due to the generation of gas.Type: GrantFiled: June 6, 2013Date of Patent: July 15, 2014Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jaepil Lee, Jeong Hee Choi, Min Su Kim, Youngjoon Shin
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Patent number: 8673476Abstract: Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, electrode leads are located at one-side ends of the stacked electrode tabs such that the electrode leads are electrically connected to the electrode tabs, and the electrode leads, joined to the electrode tabs, have rounded ends. An electrochemical cell including the electrode assembly is also disclosed.Type: GrantFiled: July 14, 2007Date of Patent: March 18, 2014Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jeong Hee Choi, Kwangho Yoo, Youngjoon Shin