Patents by Inventor Ju-Wan Lim
Ju-Wan Lim 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: 20190195956Abstract: A battery monitoring method includes identifying a state of charge (SOC) of a battery, obtaining a voltage of the battery with respect to the SOC, in response to the identified SOC being included in a diagnosis section, and determining a state of health (SOH) of the battery based on the obtained voltage of the battery.Type: ApplicationFiled: May 16, 2018Publication date: June 27, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ju Wan LIM, Duk Jin OH, Young Hun SUNG
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Publication number: 20190190277Abstract: A battery charging method and apparatus are provided. The battery charging apparatus determines, in a present charging operation, a variation in a charging current to charge a battery based on a degradation condition of the battery and an internal state of the battery in the present charging operation, and determines a charging current of a subsequent charging operation based on the variation in the charging current in the present charging operation and the charging current in the present charging operation.Type: ApplicationFiled: June 29, 2018Publication date: June 20, 2019Applicant: Samsung Electronics Co., Ltd.Inventors: Daeryong JUNG, Young Hun SUNG, Duk Jin OH, Ju Wan LIM
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Publication number: 20190181650Abstract: A battery charging method and apparatus are provided. A setting value of charging control information is determined based on an overpotential value and a voltage value of a battery and is applied in the charging control information, and a voltage applied to charge the battery is controlled based on the charging control information that applies the setting value.Type: ApplicationFiled: April 20, 2018Publication date: June 13, 2019Applicant: Samsung Electronics Co., Ltd.Inventors: Ju Wan LIM, YoungJae KIM, Duk Jin OH, Young Hun SUNG
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Publication number: 20190123574Abstract: A battery charging method and apparatus are provided. The battery charging apparatus receives a desired charging time of a battery, generates charging currents of charging steps to charge the battery based on the desired charging time, acquires a charging limit condition including an internal state condition and a maximum charging time for each of the charging steps based on the desired charging time and an electrochemical model of the battery, and generates a charging profile including the charging currents and charging times of the charging currents based on the charging limit condition.Type: ApplicationFiled: October 18, 2018Publication date: April 25, 2019Applicant: Samsung Electronics Co., Ltd.Inventors: Daeryong JUNG, Jinho KIM, Myung Hoon KIM, Young Hun SUNG, Duk Jin OH, Ju Wan LIM
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Patent number: 10109900Abstract: A battery management apparatus for a battery including battery units, the apparatus including a voltage sensor configured to sense a voltage of each of the battery units; a phase difference calculator configured to calculate a phase difference between the voltage of each of the battery units and a reference voltage; and a temperature controller configured to control a temperature of each of the battery units based on the calculated phase difference.Type: GrantFiled: January 11, 2017Date of Patent: October 23, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Jin Ho Kim, Ju Wan Lim, Tae Won Song, Tae Jung Yeo
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Publication number: 20180145528Abstract: A method and apparatus for controlling a battery, the apparatus configured to measure a current usage of a battery, generate a concentration limitation condition on a material in an active material of the battery based on a characteristic of the active battery, and control a usage of the battery based on the current usage and the concentration limitation condition.Type: ApplicationFiled: September 22, 2017Publication date: May 24, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Duk Jin OH, Tae Won SONG, Jinho KIM, Ju Wan LIM
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Publication number: 20180136283Abstract: Provided is a method and apparatus for estimating a battery state. A method of estimating a battery state that includes determining whether a previous state to a rest state of a battery is a charging state or a discharging state; selecting a current profile comprising one or both of a charging pulse and a discharging pulse based on the previous state of the battery; stabilizing an open circuit voltage (OCV) of the battery by applying the current profile to the battery; and measuring the stabilized OCV.Type: ApplicationFiled: September 22, 2017Publication date: May 17, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Won SONG, Ju Wan LIM, Sungick KIM, Jinho KIM
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Publication number: 20180123354Abstract: A battery charging method includes: charging a battery with a charging current; and changing the charging current in response to a current change event occurring during the charging of the battery, wherein the current change event occurs when the battery reaches a threshold voltage at which an anode potential of the battery reaches a reference value.Type: ApplicationFiled: October 12, 2017Publication date: May 3, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ju Wan LIM, Jin Duk OH, Myunghoon KIM
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Patent number: 9895991Abstract: A method and apparatus estimating a state of a battery are provided. A battery life estimation apparatus may charge a battery using a normal charge rate (C-rate) during a charging interval of a charging cycle and a low charge rate (C-rate) in a low-rate charging interval of the charging cycle, may compare a determined change in an electrical physical quantity of the battery over time to a reference curve, corresponding to a life of the battery, for an initial state of the battery, in the low-rate charging interval, and may estimate the life of the battery based on a result of the comparing.Type: GrantFiled: October 8, 2015Date of Patent: February 20, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Jinho Kim, Tae-Won Song, Ju-Wan Lim
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Publication number: 20170229878Abstract: A battery management apparatus including: a state of charge (SOC) estimator configured to estimate an SOC of a battery; and a storage temperature controller configured to control a storage temperature of the battery based on the SOC of the battery.Type: ApplicationFiled: January 31, 2017Publication date: August 10, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Myung Hoon KIM, Dae Ryong JUNG, Duk Jin OH, Ju Wan LIM
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Publication number: 20170200994Abstract: A battery management apparatus for a battery including battery units, the apparatus including a voltage sensor configured to sense a voltage of each of the battery units; a phase difference calculator configured to calculate a phase difference between the voltage of each of the battery units and a reference voltage; and a temperature controller configured to control a temperature of each of the battery units based on the calculated phase difference.Type: ApplicationFiled: January 11, 2017Publication date: July 13, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Jin Ho KIM, Ju Wan LIM, Tae Won SONG, Tae Jung YEO
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Publication number: 20170104248Abstract: A battery temperature estimating apparatus, the apparatus includes an alternating current (AC) power supply configured to apply AC power to a battery; a phase difference measurer configured to measure a phase difference between an AC current and an AC voltage of the battery; and an internal temperature estimator configured to estimate an internal temperature of the battery based on the measured phase difference and a state of charge (SoC) of the battery.Type: ApplicationFiled: October 12, 2016Publication date: April 13, 2017Applicant: Samsung Electronics Co., Ltd.Inventor: Ju Wan LIM
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Publication number: 20170001188Abstract: Provided are a binder composition for an electrode for a capacitive deionization device including a first polymer including a first structural unit including a zwitterionic functional group and a second structural unit including a cross-linkable functional group, a cross-linking agent, and ionic functional group, an electrode for a capacitive deionization device including the composition, a capacitive deionization device including the electrode, and a method of removing ions from a fluid using the device.Type: ApplicationFiled: January 29, 2015Publication date: January 5, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Yeong Suk CHOI, Ju Wan LIM
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Publication number: 20160214500Abstract: A method and apparatus estimating a state of a battery are provided. A battery life estimation apparatus may charge a battery using a normal charge rate (C-rate) during a charging interval of a charging cycle and a low charge rate (C-rate) in a low-rate charging interval of the charging cycle, may compare a determined change in an electrical physical quantity of the battery over time to a reference curve, corresponding to a life of the battery, for an initial state of the battery, in the low-rate charging interval, and may estimate the life of the battery based on a result of the comparing.Type: ApplicationFiled: October 8, 2015Publication date: July 28, 2016Applicant: Samsung Electronics Co., Ltd.Inventors: Jinho KIM, Tae-Won SONG, Ju-Wan LIM
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Patent number: 9203093Abstract: The present invention provides an electrode for a polymer electrolyte membrane fuel cell. In one embodiment, a planar nanoporous or microporous metal foam or metal aerogel structure is provided, from which an electrode with a catalyst layer integrally formed by fixing a catalyst in the metal foam or metal aerogel is formed.Type: GrantFiled: July 6, 2011Date of Patent: December 1, 2015Assignees: Hyundai Motor Company, SNU R&DB FoundationInventors: Nak Hyun Kwon, In Chul Hwang, Jae Seung Lee, Bum Wook Roh, Yung Eun Sung, Ju Wan Lim, Yoon Hwan Cho, Nam Gee Jung, Hee Man Choe, Yong Hun Cho
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Patent number: 8524420Abstract: Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells.Type: GrantFiled: May 13, 2010Date of Patent: September 3, 2013Assignees: Hyundai Motor Company, SNU & R&DB FoundationInventors: Nak Hyun Kwon, Jae Seung Lee, Bumwook Roh, Yung-Eun Sung, Tae-Yeol Jeon, Hee-Young Park, Ju Wan Lim, Young-Hoon Chung
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Publication number: 20120244457Abstract: The present invention provides an electrode for a polymer electrolyte membrane fuel cell. In one embodiment, a planar nanoporous or microporous metal foam or metal aerogel structure is provided, from which an electrode with a catalyst layer integrally formed by fixing a catalyst in the metal foam or metal aerogel is formed.Type: ApplicationFiled: July 6, 2011Publication date: September 27, 2012Applicants: SNU R&DB FOUNDATION, HYUNDAI MOTOR COMPANYInventors: Nak Hyun Kwon, In Chul Hwang, Jae Seung Lee, Bum Wook Roh, Yung Eun Sung, Ju Wan Lim, Yoon Hwan Cho, Nam Gee Jung, Hee Man Choe, Yong Hun Cho
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Patent number: 7951671Abstract: A method of fabricating a non-volatile memory device includes forming an isolation trench in a semiconductor substrate, and the isolation trench defines first and second fins. The method further includes forming an isolation layer partially filling the isolation trench, forming first and second charge trap patterns respectively covering parts of the first and second fins projecting from the isolation layer, and forming a control gate electrode covering the first and second charge trap patterns and crossing the first and second fins.Type: GrantFiled: May 11, 2009Date of Patent: May 31, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Ju-Wan Lim, Hyun-Seok Jang, Byung-Hong Chung, Ki-Hyun Hwang, Sang-Ryol Yang
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Publication number: 20110123908Abstract: Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells.Type: ApplicationFiled: May 13, 2010Publication date: May 26, 2011Applicants: HYUNDAI MOTOR COMPANY, SNU R&DB FOUNDATIONInventors: Nak Hyun Kwon, Jae Seung Lee, Bumwook Roh, Yung-Eun Sung, Tae-Yeol Jeon, Hee-Young Park, Ju Wan Lim, Young-Hoon Chung
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Patent number: 7759192Abstract: A semiconductor device includes a capacitor having a bottom electrode, a dielectric layer formed on the bottom electrode, a top electrode formed on the dielectric layer, and a contact plug having a metal that is connected with the top electrode, wherein the top electrode includes a doped poly-Si1-xGex layer and a doped polysilicon layer epitaxially deposited on the doped poly-Si1-xGex layer and the contact plug makes a contact with the doped polysilicon layer.Type: GrantFiled: October 24, 2005Date of Patent: July 20, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-Young Ahn, Jin-Tae Noh, Hee-Seok Kim, Jin-Gyun Kim, Ju-Wan Lim, Sang-Ryol Yang, Hong-Suk Kim, Sung-Hae Lee