Patents by Inventor Soon-Ju Choi
Soon-Ju 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: 20240106018Abstract: The present invention relates to a battery cell including an electrolyte ion concentration measurement unit and a method for measuring an electrolyte concentration using same. The battery cell according to the present invention comprises a measurement unit in which a first electrode plate, an insulation film, and a second electrode plate are sequentially stacked on one another, wherein the measurement unit is inserted between a separator of the battery cell and an electrode thereof, and thus can directly measure an electrolyte concentration between the separator and the electrode. Therefore, the battery cell can be simply manufactured and has excellent stability.Type: ApplicationFiled: December 5, 2023Publication date: March 28, 2024Applicant: LG CHEM, LTD.Inventor: Soon Ju CHOI
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Patent number: 11881570Abstract: The present invention relates to a battery cell including an electrolyte ion concentration measurement unit and a method for measuring an electrolyte concentration using same. The battery cell according to the present invention comprises a measurement unit in which a first electrode plate, an insulation film, and a second electrode plate are sequentially stacked on one another, wherein the measurement unit is inserted between a separator of the battery cell and an electrode thereof, and thus can directly measure an electrolyte concentration between the separator and the electrode. Therefore, the battery cell can be simply manufactured and has excellent stability.Type: GrantFiled: October 21, 2019Date of Patent: January 23, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventor: Soon Ju Choi
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Publication number: 20230266400Abstract: A battery diagnosing apparatus according to an embodiment includes a measuring unit configured to measure an open circuit voltage (OCV) of a battery after charging of the battery is finished and measure a resistance of the battery while the battery is discharged for a predetermined time after the charging of the battery is finished; and a control unit configured to receive voltage information for the OCV and resistance information for the resistance from the measuring unit, calculate a voltage deviation between the OCV and a criterion voltage preset for the battery, calculate a resistance deviation between the resistance and a criterion resistance preset for the battery, and diagnose whether degradation of the battery is accelerated based on the voltage deviation and the resistance deviation.Type: ApplicationFiled: March 22, 2022Publication date: August 24, 2023Applicant: LG Energy Solution, Ltd.Inventors: Young-Deok Kim, Dae-Soo Kim, Soon-Ju Choi
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Publication number: 20230236262Abstract: A secondary battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal of the secondary battery, including a memory unit configured to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, a voltage measuring unit configured to measure a voltage of a target battery during a charge or discharge process, and a processor configured to generate a charge and discharge measurement profile based on the voltage, compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile with the generated charge and discharge measurement profile, and determine a positive electrode adjustment profile and a negative electrode adjustment profile so that an error between the simulation profile and the charge and discharge measurement profile is within a predetermined level.Type: ApplicationFiled: December 3, 2021Publication date: July 27, 2023Applicant: LG Energy Solution, Ltd.Inventors: Soon-Ju Choi, Dae-Soo Kim, Young-Deok Kim, Su-Won Jee, Hyun-Jun Choi
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Publication number: 20230160970Abstract: A battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal extracted from the secondary battery, including memory to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, a voltage sensor to measure a voltage of a target battery during a charge or discharge process, and a processor to generate a plurality of charge and discharge measurement profiles based on voltages measured at a plurality of different time points, compare each of the generated charge and discharge measurement profiles with a simulation profile obtained from the positive and negative electrode reference profiles, and determine positive and negative electrode adjustment profiles for each of the generated charge and discharge measurement profiles so that an error between each charge and discharge measurement profile and the simulation profile is within a predetermined level.Type: ApplicationFiled: December 3, 2021Publication date: May 25, 2023Applicant: LG Energy Solution, Ltd.Inventors: Soon-Ju Choi, Dae-Soo Kim, Young-Deok Kim, Su-Won Jee, Hyun-Jun Choi
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Publication number: 20220393299Abstract: A secondary battery according to an embodiment of the present disclosure may include an electrode assembly and a pouch-type batter. The battery case may include a cup part to accommodate electrode assembly. A sealing part may extend outward from an edge of the cup part and may be sealed. A venting device may be inserted into the sealing part through which a gas inside the cup part may be discharged to the outside. The sealing part may include a vent sealing portion into which the venting device may be inserted, and a weak sealing portion which may be positioned between the vent sealing portion and the cup part and sealed more weakly than the periphery thereof.Type: ApplicationFiled: August 26, 2020Publication date: December 8, 2022Applicant: LG Energy Solution, Ltd.Inventors: Ji Hoon Ryu, Eun Ju Lee, Seok Koo Kim, Ji Eun Lee, Soon Ju Choi
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Publication number: 20220344696Abstract: The present invention relates to a method for manufacturing a secondary battery and a secondary battery. The method for manufacturing the secondary battery comprises an accommodation step of accommodating an electrode assembly in an accommodation part of a battery case, a vent membrane mounting step of mounting a vent membrane on a discharge hole, which passes between the inside and outside of the battery case, in the battery case, and a case sealing step of sealing the battery case, wherein the vent membrane allows only a gas to pass through the discharge hole of the battery case, but blocks a liquid.Type: ApplicationFiled: September 17, 2020Publication date: October 27, 2022Applicant: LG Energy Solution, Ltd.Inventors: Soon Ju Choi, Eun Ju Lee, Seok Koo Kim, Ji Eun Lee, Ji Hoon Ryu
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Publication number: 20220294024Abstract: Discussed is a method for manufacturing a secondary battery, the method including an operation (a) of alternately stacking an electrode and a separator to manufacture an electrode assembly; an operation (b) of laminating the electrode assembly at a pressure of 5 kgf/cm2 or more to bond the electrode and the separator, which are provided in the electrode assembly, to each other; an operation (c) of accommodating the electrode assembly in a battery case and injecting an electrolyte into the battery case to seal the battery case, thereby manufacturing a preliminary battery; an operation (d) of charging and discharging the preliminary battery to activate the preliminary battery; and an operation (e) of aging the preliminary battery at a high temperature of 60° C. to 100° C. for 1 hour to 6 hours to thermally treat the preliminary battery.Type: ApplicationFiled: July 1, 2020Publication date: September 15, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hyun Jun CHOI, Soon Ju CHOI, Seok Koo KIM, Young Deok KIM, Dae Soo KIM
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Publication number: 20220255152Abstract: The present invention relates to a method and system for evaluating insulation and lithium ion conductivity characteristics of a separator for an electrochemical device, in which insulation and lithium ion conductivity characteristics are evaluated while a separator-containing measurement object to be tested and an electrochemical device are made to face each other, and thus, the insulation and lithium ion conductivity characteristics of the separator can be evaluated by reflecting temperature and pressure changes and the like according to the actual operation state of the electrochemical device.Type: ApplicationFiled: October 6, 2020Publication date: August 11, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Soon Ju CHOI, Eun Ju LEE
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Publication number: 20210043987Abstract: The present invention relates to a battery cell including an electrolyte ion concentration measurement unit and a method for measuring an electrolyte concentration using same. The battery cell according to the present invention comprises a measurement unit in which a first electrode plate, an insulation film, and a second electrode plate are sequentially stacked on one another, wherein the measurement unit is inserted between a separator of the battery cell and an electrode thereof, and thus can directly measure an electrolyte concentration between the separator and the electrode. Therefore, the battery cell can be simply manufactured and has excellent stability.Type: ApplicationFiled: October 21, 2019Publication date: February 11, 2021Applicant: LG CHEM, LTD.Inventor: Soon Ju CHOI
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Patent number: 7939917Abstract: Example embodiments provide tape structures including a base layer, a neutralizing layer and an adhesive layer. The base layer may support an object. The neutralizing layer may be arranged on the base layer. The neutralizing layer may be grounded to neutralize charges between the base layer and the object. The adhesive layer may be arranged on the neutralizing layer. The object may be attached to the adhesive layer. Example embodiments also provide methods of manufacturing the tape structures, methods of separating a wafer, and apparatuses for separating a wafer.Type: GrantFiled: September 10, 2008Date of Patent: May 10, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Chang-Hoon Lee, Jong-Keun Jeon, Yong-Jin Lee, Soon-Ju Choi
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Publication number: 20090068819Abstract: Example embodiments provide tape structures including a base layer, a neutralizing layer and an adhesive layer. The base layer may support an object. The neutralizing layer may be arranged on the base layer. The neutralizing layer may be grounded to neutralize charges between the base layer and the object. The adhesive layer may be arranged on the neutralizing layer. The object may be attached to the adhesive layer. Example embodiments also provide methods of manufacturing the tape structures, methods of separating a wafer, and apparatuses for separating a wafer.Type: ApplicationFiled: September 10, 2008Publication date: March 12, 2009Inventors: Chang-Hoon Lee, Jong-Keun Jeon, Yong-Jin Lee, Soon-Ju Choi