Patents by Inventor Young-Min Nam
Young-Min Nam 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: 20240136844Abstract: Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.Type: ApplicationFiled: December 5, 2023Publication date: April 25, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Jin-Hyung LIM, Young-Jin KIM, Gi-Min NAM, Hyoung Jun AHN, Kyu-Chul LEE, Won-Tae JOE
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Publication number: 20240128494Abstract: A pouch type all-solid-state battery including a reference electrode is disclosed. In the all-solid-state battery, a potential variation of each electrode is accurately measured because the ion transfer path between the reference electrode and a positive electrode/negative electrode is short. Accordingly, the all-solid-state battery secures a desired cell performance while having battery specifications similar to actual battery specifications.Type: ApplicationFiled: September 5, 2023Publication date: April 18, 2024Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Jae Ho Shin, Ji Chang Kim, Hyun Min Seo, Young Jin Nam, Ga Young Choi
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Publication number: 20240079597Abstract: Proposed is an all-solid-state battery including a self-standing sheet layer positioned on a negative electrode current collector. The all-solid-state battery may include the negative electrode current collector, the self-standing sheet layer positioned on the negative electrode current collector, a solid electrolyte layer positioned on the sheet layer, a positive electrode active material layer positioned on the solid electrolyte layer, and a positive electrode current collector positioned on the positive electrode active material layer. The sheet layer contains carbon nanotubes.Type: ApplicationFiled: May 4, 2023Publication date: March 7, 2024Applicants: Hyundai Motor Company, Kia Corporation, Foundation of Soongsil University-Industry CooperationInventors: Jae Min Lim, Hee Soo Kang, Young Jin Nam, Soon Chul Byun, Young Jin Jeong, Gyo Sik Kim, Hae Joo Kim, Jeong Yun Lee
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Publication number: 20240079599Abstract: Disclosed is an anodeless all-solid-state battery which may effectively control local volume expansion due to lithium deposited during charging of the battery. The all-solid-state battery includes an anode current collector, an intermediate layer located on the anode current collector, a solid electrolyte layer located on the intermediate layer, a cathode active material layer located on the solid electrolyte layer and including a cathode active material, and a cathode current collector located on the cathode active material layer. The intermediate layer includes carbon particles and metal particles alloyable with lithium, and the carbon particles include a first carbon material, e.g., as a spherical carbon material, and a second carbon material, e.g., a linear carbon material.Type: ApplicationFiled: April 25, 2023Publication date: March 7, 2024Applicants: Hyundai Motor Company, Kia CorporationInventors: Young Jin Nam, Hong Suk Choi, Seon Hwa Kim, Hee Soo Kang, Jae Min Lim, Sang Wan Kim
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Patent number: 9663447Abstract: Provided are an asymmetric butadiene-based charge transporting compound represented by one of Formula (1) and (1?) as in claim 1, an electrophotographic photoreceptor including the asymmetric butadiene-based charge transporting compound, and an electrophotographic imaging apparatus. The electrophotographic photoreceptor including the organic photoconductive material as a charge transporting material may not cause a problem, such as partial crystallization during film formation and may have a high charge potential, a sufficient photoresponsive property with high sensitivity, and a high durability. Moreover, these properties may be all maintained even in the case of exposure to light as well as use in low-temperature environments or high-speed processes, thus having high reliability.Type: GrantFiled: June 27, 2016Date of Patent: May 30, 2017Assignee: S-PRINTING SOLUTION CO., LTD.Inventors: Akihiro Kondo, Satoshi Katayama, Young-min Nam, Won-joon Son, Chan-hee Lee, Sang-heum Hwang
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Patent number: 9660207Abstract: An organic solar cell includes a first sub-cell including a first active layer and a second sub-cell including a second active layer, wherein at least one of the first active layer and the second active layer includes at least two types of electron acceptors having different light absorbance from each other.Type: GrantFiled: July 23, 2013Date of Patent: May 23, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Soo Ghang Ihn, Jong Hwan Park, Yeon Ji Chung, Young Min Nam
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Publication number: 20160304437Abstract: Provided are an asymmetric butadiene-based charge transporting compound represented by one of Formula (1) and (1?) as in claim 1, an electrophotographic photoreceptor including the asymmetric butadiene-based charge transporting compound, and an electrophotographic imaging apparatus. The electrophotographic photoreceptor including the organic photoconductive material as a charge transporting material may not cause a problem, such as partial crystallization during film formation and may have a high charge potential, a sufficient photoresponsive property with high sensitivity, and a high durability. Moreover, these properties may be all maintained even in the case of exposure to light as well as use in low-temperature environments or high-speed processes, thus having high reliability.Type: ApplicationFiled: June 27, 2016Publication date: October 20, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Akihiro KONDO, Satoshi KATAYAMA, Young-min NAM, Won-joon SON, Chan-hee LEE, Sang-heum HWANG
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Publication number: 20140026948Abstract: An organic solar cell includes a first sub-cell including a first active layer and a second sub-cell including a second active layer, wherein at least one of the first active layer and the second active layer includes at least two types of electron acceptors having different light absorbance from each other.Type: ApplicationFiled: July 23, 2013Publication date: January 30, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Soo Ghang IHN, Jong Hwan PARK, Yeon Ji CHUNG, Young Min NAM
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Patent number: 8636947Abstract: The present invention provides an improved metal separator for a fuel cell and a method for preparing same. More particularly, the invention provides a metal separator for a fuel cell, whereby the separator has a surface structure that imparts reduced contact resistance, improved corrosion resistance, and stable electrical conductivity. The invention further provides a surface treatment method for making the metal separator of the invention. The inventive method comprises sintering Fe—Cr—B—V-based powder on the surface of a metal foam to form an alloy layer; and forming a nitride layer of a (Cr—V—B)N-based material while supplying nitrogen gas on the surface of the alloy layer.Type: GrantFiled: November 22, 2010Date of Patent: January 28, 2014Assignee: Hyundai Motor CompanyInventors: Young Min Nam, Yoo Chang Yang, Suk Min Baeck, Seung Gyun Ahn
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Publication number: 20120231372Abstract: A metallic bipolar plate for a fuel cell, in which a carbon coating layer containing fluorine is formed on the surface of a stainless steel base material, thus having excellent electrical conductivity and corrosion resistance and further excellent water draining performance and heat radiating performance. In the metallic bipolar plate for a fuel cell of the present invention, the internal residual stress in the surface coating layer is significantly reduced due to the addition of fluorine, and thereby it is possible to improve the adhesive strength between the stainless steel and the surface coating layer.Type: ApplicationFiled: May 22, 2012Publication date: September 13, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: In Woong Lyo, Jeong Uk An, Sung Moon Choi, Seung Gyun Ahn, Young Min Nam, Yoo Chang Yang
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Publication number: 20120088184Abstract: The present invention provides an improved metal separator for a fuel cell and a method for preparing same. More particularly, the invention provides a metal separator for a fuel cell, whereby the separator has a surface structure that imparts reduced contact resistance, improved corrosion resistance, and stable electrical conductivity. The invention further provides a surface treatment method for making the metal separator of the invention. The inventive method comprises sintering Fe—Cr—B—V-based powder on the surface of a metal foam to form an alloy layer; and forming a nitride layer of a (Cr—V—B)N-based material while supplying nitrogen gas on the surface of the alloy layer.Type: ApplicationFiled: November 22, 2010Publication date: April 12, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Young Min Nam, Yoo Chang Yang, Suk Min Baeck, Seung Gyun Ahn
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Patent number: 7914948Abstract: The present invention provides a metallic bipolar plate for a fuel cell and a method for forming a surface layer of the same, in which the surface layer is formed in such a manner that a plasma nitridation process is performed on the surface of a stainless steel base material to form a nitrogen implanted layer, and oxidation and reduction processes are performed on the surface of the nitrogen implanted layer to form a Fe3O4 surface oxidation layer thereon, thus improving conductivity and corrosion resistance.Type: GrantFiled: December 17, 2008Date of Patent: March 29, 2011Assignee: Hyundai Motor CompanyInventors: In Woong Lyo, Jeong Uk An, Seung Gyun Ahn, Young Min Nam, Yoo Chang Yang, Sae Hoon Kim, Sang Mun Chin
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Publication number: 20100015499Abstract: A metallic bipolar plate for a fuel cell, in which a carbon coating layer containing fluorine is formed on the surface of a stainless steel base material, thus having excellent electrical conductivity and corrosion resistance and further excellent water draining performance and heat radiating performance. In the metallic bipolar plate for a fuel cell of the present invention, the internal residual stress in the surface coating layer is significantly reduced due to the addition of fluorine, and thereby it is possible to improve the adhesive strength between the stainless steel and the surface coating layer.Type: ApplicationFiled: February 3, 2009Publication date: January 21, 2010Applicant: HYUNDAI MOTOR COMPANYInventors: In Woong Lyo, Jeong Uk An, Sung Moon Choi, Seung Gyun Ahn, Young Min Nam, Yoo Chang Yang
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Patent number: 7010218Abstract: A digital magnetic recording/reproducing device for recording or reproducing plural sorts of audio data, and a recording/reproducing method therefor. The digital magnetic recording/reproducing device includes an analog-to-digital (A/D) and digital-to-analog (D/A) converter for converting an audio analog signal into digital data or vice versa, a formatter/deformatter for converting a format of the audio signal and the data grouped to be stored in the recording sectors of the magnetic tape, a recording selection unit for transmitting the input audio signal to the A/D converter or formatter according to the type of the audio signal, and a reproduction selection unit for transmitting the data reproduced from the magnetic tape to the D/A converter or deformatter. The output data from the A/D converter and the output data from the formatter are recorded on the different recording sectors of the magnetic tape.Type: GrantFiled: October 16, 2001Date of Patent: March 7, 2006Assignee: Samsung Electronics, Co., Ltd.Inventor: Young-Min Nam
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Publication number: 20020094194Abstract: A digital magnetic recording/reproducing device for recording or reproducing plural sorts of audio data, and a recording/reproducing method therefor. The digital magnetic recording/reproducing device includes an analog-to-digital (A/D) and digital-to-analog (D/A) converter for converting an audio analog signal into a digital data or vice versa, a formatter/deformatter for converting a format of the audio signal and the data grouped to be stored in the recording sectors of the magnetic tape, a recording selection unit for transmitting the input audio signal to the A/D converter or formatter according to the type of the audio signal, and a reproduction selection unit for transmitting the data reproduced from the magnetic tape to the D/A converter or deformatter. The output data from the A/D converter and the output data from the formatter are recorded on the different recording sectors of the magnetic tape.Type: ApplicationFiled: October 16, 2001Publication date: July 18, 2002Inventor: Young-Min Nam