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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 37. Отображено 37.
05-10-2017 дата публикации

ELECTRODE ACTIVE MATERIAL SLURRY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Номер: WO2017171372A1
Автор: WOO, Kyung Hwa, JEONG, Kwang Ho, YOO, Jung Woo, RHO, Ye Cheol, KIM, Je Young
Принадлежит:

The present invention relates to an electrode active material slurry, and an electrode and a lithium secondary battery, which comprise the same, the electrode active material slurry comprising: a) an electrode active material; b) a conductive material; c) a binder; d) a solvent; and e) a cellulose-based compound having an average weight molecular weight (Mw) of 2,000,000-3,000,000, a degree of substitution of 1.0-1.2 and a viscosity (Brookfield viscometer, a speed of 12 rpm) of 4,000-10,000 cps. The phase stability of the electrode active material slurry can be improved and battery characteristics can be improved since the cellulose-based compound having specific ranges of molecular weight and degree of substitution is used.

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Номер записи: 1
17-01-2019 дата публикации

METHOD FOR MANUFACTURING SECONDARY BATTERY USING LITHIUM METAL AS NEGATIVE ELECTRODE

Номер: WO2019013478A2
Автор: WOO, Kyung Hwa, LEE, Jae Hyun, HAH, Hoe Jin, YOON, Jong Keon
Принадлежит:

The present invention relates to a method for manufacturing a secondary battery using a lithium metal as a negative electrode, and is directed to a method for manufacturing a lithium secondary battery, the method being characterized in that an oxide film on a surface of the lithium metal is removed by partial discharge before initial charge at the time of an activation process. Here, the discharge current density at the time of the partial discharge is preferably in a range of 0.01-3 mA/cm2. In the present invention, the oxide film formed on the surface of the lithium metal is removed through initial partial discharge, thereby minimizing a reduction in ion conductivity and allowing a lithium precipitation reaction to be uniform, leading to an improvement in battery cycle performance.

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Номер записи: 2
19-07-2017 дата публикации

리튬 이차전지의 음극 형성용 조성물의 제조방법, 이를 이용하여 제조한 리튬 이차전지용 음극 및 리튬 이차전지

Номер: KR0101753892B1
Автор: 우경화, 심혜림
Принадлежит: 주식회사 엘지화학

... 본 발명은 도전재 및 셀룰로오스계 증점제를 용매 중에서 혼합 및 분산시켜 분산액을 준비하는 단계, 및 상기 분산액에 음극활물질 및 바인더를 첨가하여 혼합하는 단계를 포함하고, 상기 도전재는 1차 입자가 응집되어 이루어지며, BET 비표면적이 100m2/g 이상이고, 평균입경(D50)이 1㎛ 이하인 2차 입자를 포함하는 것인 리튬 이차전지의 음극 형성용 조성물의 제조방법, 그리고 상기 제조방법에 의해 제조된 음극 및 이를 포함하는 리튬 이차전지를 제공한다. 상기 리튬 이차전지의 음극 형성용 조성물의 제조방법에 의해, 활물질간 전도성 증가 효과가 우수한 도전재가 바인더의 흡착없이 조성물내 균일 분산되어 포함됨으로써, 음극내 전극저항을 감소시키고 접착력을 향상시킬 수 있으며, 그 결과로서 리튬 이차전지의 출력특성 및 수명특성을 개선시킬 수 있다.

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Номер записи: 3
17-01-2019 дата публикации

3D PATTERN CUTTING MACHINE FOR LITHIUM METAL ELECTRODE

Номер: WO2019013477A2
Автор: YOON, Jong Keon, HAH, Hoe Jin, WOO, Kyung Hwa
Принадлежит:

The present invention relates to a 3D pattern cutting machine for a lithium metal electrode and, more specifically, to a 3D pattern cutting machine comprising: a cutting mold punch having a mold suitable for the size of a unit electrode and moving up and down; a die corresponding to the mold punch; a mold blade positioned the periphery of the mold punch so as to cut a lithium metal electrode into a unit electrode; and a 3D pattern positioned at an inside part of the mold punch which contacts the die and has no blade formed thereon. The use of the 3D pattern cutting machine provided by the present invention in producing a lithium metal unit electrode brings about the effect of saving cost and time required for replacing and cleaning a 3D pattern, always constantly engraving shapes of the 3D pattern, and engraving the 3D pattern at the same time as cutting, thereby improving the productivity of a lithium metal electrode.

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Номер записи: 4
21-04-2022 дата публикации

BATTERY DIAGNOSTIC DEVICE AND BATTERY DIAGNOSTIC METHOD

Номер: WO2022080835A1
Автор: WOO, Kyung-Hwa, BAE, Yoon-Jung, CHA, A-Ming
Принадлежит:

A battery diagnostic device according to an embodiment of the present invention comprises: a measuring part configured to measure voltage and temperature of a battery; an ohmic resistance determining part configured to determine an ohmic resistance of the battery on the basis of an impedance profile generated with respect to the battery; and a control part configured to compare the voltage of the battery, which has been measured by the measuring part, with a reference voltage to calculate a voltage variance, compare the ohmic resistance determined by the ohmic resistance determining part with the reference resistance to calculate a resistance change rate, determine a degree of internal gas generation of the battery through magnitude comparison between the calculated resistance change rate and a reference resistance change rate, and determine the cause of internal gas generation of the battery through magnitude comparison between the calculated voltage variance and a reference voltage variance ...

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Номер записи: 5
28-02-2018 дата публикации

NEGATIVE ELECTRODE INCLUDING MULTILAYERED PROTECTIVE LAYER AND LITHIUM SECONDARY BATTERY INCLUDING SAME

Номер: KR1020180020599A
Автор: LEE, HYE JIN, WOO, KYUNG HWA
Принадлежит:

The present invention relates to a negative electrode including a multilayered protective layer and a lithium secondary battery including the same. The multilayered protective layer prevents growth of lithium dendrites on surfaces of electrodes, and also prevents reduction in performance of the battery since the protective layer itself does not function as a resistant layer without overvoltage taking place during a charging and discharging process. In addition, it is also possible to secure stability in an operation of the battery. To this end, the negative electrode consists of: a lithium metal layer; and a multilayered protective layer formed on the lithium metal layer. COPYRIGHT KIPO 2018 ...

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Номер записи: 6
08-05-2024 дата публикации

배터리 진단 장치 및 방법

Номер: KR20240061909A
Автор: 배윤정, 우경화, 차아밍
Принадлежит:

... 본 발명의 일 실시예에 따른 배터리 진단 장치는 배터리의 전압과 상기 전압에 대한 미분 용량 간의 대응 관계를 나타내는 미분 프로파일 획득하도록 구성된 프로파일 획득부; 및 상기 미분 프로파일에서 타겟 피크를 결정하며, 상기 배터리에 대해 미리 설정된 기준 프로파일의 기준 피크와 상기 결정된 타겟 피크 간의 상기 전압을 비교한 제1 비교 결과 및 상기 미분 용량을 비교한 제2 비교 결과를 결정하고, 상기 제1 비교 결과 및 상기 제2 비교 결과에 기반하여 상기 배터리의 상태를 판단하도록 구성된 제어부를 포함한다.

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Номер записи: 7
14-01-2019 дата публикации

분산성 향상 및 저항 감소를 위한 이차전지용 음극 슬러리 및 이를 포함하는 음극

Номер: KR0101938236B1
Автор: 유정우, 조형석, 노예철, 우경화, 정광호, 김제영
Принадлежит: 주식회사 엘지화학

... 본 발명은 CMC의 치환도 또는 분자량 등의 물성을 조절하여 음극 활물질에 대한 CMC의 흡착량을 증가시킴으로써 음극 활물질의 분산성을 향상시키는 동시에, CMC 배합량을 감소시킴으로써 슬러리 고형분을 증가시키고 전지의 저항을 감소시킨 이차전지용 음극 슬러리 및 이를 포함하는 음극을 제공한다.

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Номер записи: 8
18-05-2017 дата публикации

ANODE SLURRY FOR SECONDARY BATTERY FOR IMPROVING DISPERSIBILITY AND REDUCING RESISTANCE, AND ANODE COMPRISING SAME

Номер: WO2017082546A1
Автор: YOO, Jung Woo, CHO, Hyung Suk, RHO, Ye Cheol, WOO, Kyung Hwa, JEONG, Kwang Ho, KIM, Je Young
Принадлежит:

The present invention provides an anode slurry for a secondary battery and an anode comprising the same, in which the dispersibility of an anode active material is improved by increasing the adsorption amount of CMC with respect to the anode active material by adjusting the degree of substitution or physical properties such as molecular weight, and a CMC blend amount is reduced so as to increase the slurry solid content and reduce the resistance of a battery.

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Номер записи: 9
26-01-2018 дата публикации

ELECTRODE INCLUDING CURRENT COLLECTOR WITH PERFORATION STRUCTURE, AND LITHIUM SECONDARY BATTERY INCLUDING SAME

Номер: KR1020180009129A
Автор: WOO, KYUNG HWA
Принадлежит:

The present invention relates to an electrode including a current collector with a perforation structure and a lithium secondary battery including the same. According to the present invention, extraction and removal reaction of lithium metal in a perforation of an anode current collector is induced so that volume expansion of a cell is suppressed and the performance of the cell is improved. The lithium secondary battery comprises: a pair of anode current collectors; and a lithium metal layer. COPYRIGHT KIPO 2018 ...

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Номер записи: 10
08-05-2024 дата публикации

배터리 진단 장치 및 방법

Номер: KR20240061910A
Автор: 배윤정, 우경화, 정희석, 차아밍
Принадлежит:

... 본 발명의 일 실시예에 따른 배터리 진단 장치는 배터리의 충전 사이클에서 상기 배터리의 전압 및 전류를 포함하는 배터리 정보를 측정하도록 구성된 데이터 획득부 및 상기 배터리 정보에 기반하여 상기 충전 사이클 동안의 정전류 충전 용량 비율 및 정전압 충전 용량 비율을 산출하고, 상기 정전류 충전 용량 비율 및 상기 정전압 충전 용량 비율에 기반하여 상기 배터리의 퇴화 종류를 판단하도록 구성된 제어부를 포함한다.

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Номер записи: 11
12-10-2017 дата публикации

NEGATIVE ELECTRODE ACTIVE MATERIAL COMPOSITION HAVING ENHANCED ADHESION FORCE, NEGATIVE ELECTRODE USING SAME AND LITHIUM SECONDARY BATTERY

Номер: KR1020170111352A
Автор: JEONG, KWANG HO, PARK, JUN SOO, KIM, JE YOUNG, YOO, JUNG WOO, WOO, KYUNG HWA, RHO, YE CHEOL
Принадлежит:

The present invention relates to a negative electrode active material composition having enhanced adhesion force, a negative electrode using the same and a lithium secondary battery. Provided is a negative electrode active material composition capable of enhancing electrode adhesion force and manufacturing a negative electrode having low resistance properties by using an aqueous polymer having an amide group and acrylate-styrene butadiene copolymer rubber having high acrylate monomer content. Also, provided are a negative electrode and a lithium secondary battery having excellent performance by using the negative electrode active material composition. COPYRIGHT KIPO 2017 (AA) Comparative example 2 (BB) Comparative example 3 (CC) Comparative example 5 (DD) Example 3 ...

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Номер записи: 12
07-08-2017 дата публикации

음극 슬러리 조성물 및 이의 제조방법

Номер: KR0101765370B1
Автор: 심혜림, 우경화
Принадлежит: 주식회사 엘지화학

... 본 발명의 음극 슬러리 조성물의 제조방법은, (a) 분자량이 400,000 내지 1,000,000인 고상의 카르복시메틸기를 포함하는 셀룰로오스계 화합물, 도전재 및 용매를 혼합하여 분산액을 제조하는 단계; (b) 상기 분산액 및 음극 활물질을 혼합하여 슬러리를 얻는 단계; 및 (c) 상기 슬러리에, 분자량이 1,000,000 초과 내지 4,000,000인 액상의 카르복시메틸기를 포함하는 셀룰로오스계 화합물, 희석제 및 바인더를 첨가하여 슬러리 조성물을 제조하는 단계;를 포함한다. 이로써 제조된 음극 슬러리 조성물은 고형분 함량이 클 수 있어, 이를 집전체에 도포하는 과정에 있어서, 코팅 후 압연 공정에 따른 슬러리 조성물의 도포 두께 변화량(즉, 압축률)을 현저히 감소시킬 수 있다.

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Номер записи: 13
11-04-2019 дата публикации

METHOD FOR MANUFACTURING SECONDARY BATTERY USING LITHIUM METAL AS NEGATIVE ELECTRODE

Номер: WO2019013478A3
Автор: WOO, Kyung Hwa, LEE, Jae Hyun, HAH, Hoe Jin, YOON, Jong Keon
Принадлежит:

The present invention relates to a method for manufacturing a secondary battery using a lithium metal as a negative electrode, and is directed to a method for manufacturing a lithium secondary battery, the method being characterized in that an oxide film on a surface of the lithium metal is removed by partial discharge before initial charge at the time of an activation process. Here, the discharge current density at the time of the partial discharge is preferably in a range of 0.01-3 mA/cm2. In the present invention, the oxide film formed on the surface of the lithium metal is removed through initial partial discharge, thereby minimizing a reduction in ion conductivity and allowing a lithium precipitation reaction to be uniform, leading to an improvement in battery cycle performance.

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Номер записи: 14
11-04-2019 дата публикации

3D PATTERN CUTTING MACHINE FOR LITHIUM METAL ELECTRODE

Номер: WO2019013477A3
Автор: YOON, Jong Keon, HAH, Hoe Jin, WOO, Kyung Hwa
Принадлежит:

The present invention relates to a 3D pattern cutting machine for a lithium metal electrode and, more specifically, to a 3D pattern cutting machine comprising: a cutting mold punch having a mold suitable for the size of a unit electrode and moving up and down; a die corresponding to the mold punch; a mold blade positioned the periphery of the mold punch so as to cut a lithium metal electrode into a unit electrode; and a 3D pattern positioned at an inside part of the mold punch which contacts the die and has no blade formed thereon. The use of the 3D pattern cutting machine provided by the present invention in producing a lithium metal unit electrode brings about the effect of saving cost and time required for replacing and cleaning a 3D pattern, always constantly engraving shapes of the 3D pattern, and engraving the 3D pattern at the same time as cutting, thereby improving the productivity of a lithium metal electrode.

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Номер записи: 15
12-04-2016 дата публикации

NEGATIVE ELECTRODE SLURRY COMPOSITION AND MANUFACTURING METHOD THEREOF

Номер: KR1020160039980A
Автор: SHIM, HYE LIM, WOO, KYUNG HWA
Принадлежит:

The present invention relates to a negative electrode slurry composition and a manufacturing method thereof. The manufacturing method includes the following steps: (a) manufacturing a suspension by mixing a cellulose type composition including a carboxymethyl group, a conducting agent, and a dispersion solvent; (b) obtaining slurry by mixing the suspension and a negative electrode active material; and (c) manufacturing a slurry composition by adding diluent and a binder to the slurry. A degree of substitution of the cellulose type composition including the carboxymethyl group is 0.2 to 1.5. The negative electrode slurry composition, manufactured by manufacturing a pre-suspension by controlling a rotational speed of a dispersion device by applying a high speed dispersion method, can allow the cellulose type composition including the carboxymethyl group having a high molecular weight and a low degree of substitution to be included, and induce uniform dispersion of an active material or the ...

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Номер записи: 16
28-09-2016 дата публикации

METHOD FOR PREPARING NEGATIVE ELECTRODE COMPOSITION FOR LITHIUM SECONDARY BATTERY, AND NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY PREPARED BY USING SAME

Номер: KR1020160112748A
Автор: WOO, KYUNG HWA, SHIM, HYE LIM, KOO, CHANG WAN
Принадлежит:

According to the present invention, disclosed is a method for preparing a negative electrode composition for a lithium secondary battery, the method comprising the steps of: preparing a first mixture by dispersing a first cellulose compound with a high degree of substitution, in which the degree of substitution of carboxylic groups ranges from 1 to 1.2, and a conductive material in a solvent; preparing a second mixture by adding a negative electrode active material to the first mixture and then mixing the negative electrode active material and the first mixture; and adding a second cellulose compound with a low degree of substitution, in which the degree of substitution of carboxylic groups is less than 1, and a binder to the second mixture, and mixing the second cellulose compound, the binder, and the second mixture. Also disclosed are a negative electrode for a lithium secondary battery and a lithium secondary battery prepared by using the same. According to the method for preparing a ...

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Номер записи: 17
21-04-2022 дата публикации

BATTERY DIAGNOSTIC APPARATUS AND METHOD

Номер: WO2022080837A1
Автор: WOO, Kyung-Hwa, BAE, Yoon-Jung, CHA, A-Ming
Принадлежит:

A battery diagnostic apparatus according to an embodiment of the present invention comprises: a measurement unit for measuring the discharge capacity and temperature of a battery; an ohm resistance determination unit for determining the ohm resistance of the battery on the basis of an impedance profile generated with respect to the battery; and a control unit which calculates a capacity change rate by comparing the discharge capacity of the battery measured by the measurement unit and a reference capacity, calculates a resistance change rate by comparing the ohm resistance determined by the ohm resistance determination unit and a reference resistance, determines the amount of generated internal gas of the battery by comparing the calculated resistance change rate and a standard resistance change rate, and determines a cause of the internal gas generation of the battery by comparing the calculated capacity change rate and a standard capacity change rate.

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Номер записи: 18
14-11-2019 дата публикации

LITHIUM METAL SECONDARY BATTERY WITH IMPROVED SAFETY, AND BATTERY MODULE INCLUDING SAME

Номер: WO2019216713A1
Автор: YOON, Jong-Keon, WOO, Kyung-Hwa, CHOI, Hyun-Jun, LEE, Hye-Jin, HAH, Hoe-Jin, KIM, Hee-Tak, ROH, Young-Il, JIN, Hyun-Soo
Принадлежит:

The present invention relates to a lithium metal secondary battery comprising: an electrode assembly provided with a cathode, a lithium metal anode, and a separator interposed between the cathode and the lithium metal anode; and a nonaqueous electrolyte solution impregnated in the electrode assembly. The present invention relates to a lithium metal secondary battery and a battery module including same, the lithium metal secondary battery further comprising a protective layer interposed between the lithium metal anode and the separator, wherein the protective layer includes a polymer having sulfur chain groups.

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Номер записи: 19
12-04-2016 дата публикации

NEGATIVE ELECTRODE SLURRY COMPOSITION AND MANUFACTURING METHOD THEREOF

Номер: KR1020160039979A
Автор: SHIM, HYE LIM, WOO, KYUNG HWA
Принадлежит:

The present invention relates to a manufacturing method of a negative electrode slurry composition. The method includes the following steps: (a) manufacturing a dispersed solution by mixing a cellulose type composition including a carboxymethyl in a solid state, of which a molecular weight is 400000 to 1000000, a conducting agent, and a solvent; (b) obtaining slurry by mixing the dispersed solution and a negative electrode active material; and (c) manufacturing a slurry composition by adding diluent, a binder, and a cellulose type composition including a carboxymethyl group in a liquid state, of which a molecular weight is greater than 1000000 to 4000000, to the slurry. A negative electrode slurry composition manufactured thereby can have a high solid content, so in a process of applying the same to a current collector, an application thickness change amount (that is to say compressibility) of the slurry composition, caused by a rolling process after coating, can be significantly reduced ...

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Номер записи: 20
18-01-2019 дата публикации

리튬 금속 전극용 3D 패턴 타발기

Номер: KR1020190006210A
Автор: 윤종건, 하회진, 우경화
Принадлежит:

... 본 발명은 리튬 금속 전극용 3D 패턴 타발기에 관한 것으로, 보다 상세하게는 단위 전극의 크기에 맞는 금형을 가지고 상하 운동을 하는 타발 금형 펀치; 상기 금형 펀치에 대응되는 다이; 상기 금형 펀치의 가장자리에 위치하여 리튬 금속 전극을 단위 전극으로 타발하는 금형 날; 및 상기 금형 펀치의 다이와 맞닿는 안쪽 부분이면서 날이 형성되지 않은 부분에 위치하는 3D 패턴; 을 포함하는 3D 패턴 타발기에 관한 것이다. 본 발명에서 제공하는 3D 패턴 타발기에 의하여 리튬 금속 단위전극을 생산하게 되면 3D 패턴 교체 및 청소에 있어 비용 및 시간이 절감되고, 3D 패턴의 형상이 항상 일정하게 새겨지며, 타발과 동시에 3D 패턴이 새겨져 리튬 금속 전극의 생산성이 향상되는 효과가 있다.

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Номер записи: 21
19-05-2017 дата публикации

NEGATIVE ELECTRODE SLURRY FOR SECONDARY BATTERY TO IMPROVE DISPERSIBILITY AND REDUCE RESISTANCE, AND NEGATIVE ELECTRODE COMPRISING SAME

Номер: KR1020170055359A
Автор: YOO, JUNG WOO, CHO, HYUNG SUK, RHO, YE CHEOL, WOO, KYUNG HWA, JEONG, KWANG HO, KIM, JE YOUNG
Принадлежит:

The present invention relates to a negative electrode slurry for a secondary battery and a negative electrode comprising the same. The negative electrode slurry for a secondary battery improves dispersibility of a negative electrode active material by increasing the adsorption amount of CMC on the negative electrode active material through controlling physical properties such as substitution degree or molecular weight of CMC, increases solid content of the slurry by decreasing the mixed amount of the CMC, and reduces resistance of a battery. COPYRIGHT KIPO 2017 ...

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Номер записи: 22
27-06-2016 дата публикации

METHOD FOR PREPARING COMPOSITION FOR FORMING NEGATIVE ELECTRODE OF LITHIUM SECONDARY BATTERY AND NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY PREPARED BY USING SAME

Номер: KR1020160073822A
Автор: WOO, KYUNG HWA, SHIM, HYE LIM
Принадлежит:

The present invention relates to a method for preparing a composition for forming a negative electrode of a lithium secondary battery, a negative electrode prepared by this preparation method, and a lithium secondary battery including the same. The preparation method includes: a step of preparing a dispersion solution by mixing with each other and dispersing a conductive material and a cellulose-based thickener in a solvent; and a step of adding a negative electrode active material and a binder to the dispersion solution and mixing the negative electrode active material and the binder with the dispersion solution, in which the conductive material is formed by primary particle coagulation and includes secondary particles having a BET specific surface area of at least 100 m^2/g and having an average particle diameter (D_50) of one micrometer or less. By the method for preparing the composition for forming a negative electrode of a lithium secondary battery, the conductive material that is ...

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Номер записи: 23
07-04-2022 дата публикации

APPARATUS, METHOD, AND SYSTEM FOR DIAGNOSING BATTERY

Номер: WO2022071776A1
Автор: BAE, Yoon-Jung, WOO, Kyung-Hwa, CHA, A-Ming
Принадлежит:

A battery diagnosis apparatus according to an embodiment of the present invention, comprises: an ohmic resistance determination unit configured to determine an ohmic resistance of a battery cell in each of a plurality of impedance profiles generated at different times with respect to the battery cell; a resistance change rate calculation unit configured to calculate a resistance change rate between a plurality of the determined ohmic resistances; a gas generation degree determination unit configured to determine an internal gas generation degree of the battery cell on the basis of the calculated resistance change rate; and a state diagnosis unit configured to diagnose a state of the battery cell according to the determined internal gas generation degree.

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Номер записи: 24
18-07-2019 дата публикации

METHOD FOR FABRICATION OF LITHIUM METAL SECONDARY BATTERY COMPRISING LITHIUM ELECTRODE

Номер: WO2019139424A1
Автор: WOO, Kyung-Hwa, YOON, Jong-Keon, LEE, Jae-Hyun, HAH, Hoe-Jin
Принадлежит:

The present invention relates to a method for fabrication of a lithium metal secondary battery comprising a lithium metal electrode as an anode, wherein the lithium metal electrode has a protecting layer formed thereon and stripping occurs on the surface of the lithium metal electrode by discharging prior to early charging upon an activation process of the lithium metal secondary battery.

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Номер записи: 25
22-02-2018 дата публикации

ANODE COMPRISING MULTIPLE PROTECTIVE LAYERS, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Номер: WO2018034526A1
Автор: LEE, Hye Jin, WOO, Kyung Hwa
Принадлежит:

The present invention relates to an anode comprising multiple protective layers, and a lithium secondary battery comprising the same, wherein the multiple protective layers prevent lithium dendrites from growing on the surface of an electrode, and the protective layers themselves do not act as resistant layers such that overvoltage is prevented from being applied during charging/discharging, and thus the deterioration of battery performance is prevented and stability can be ensured while the battery is operated.

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Номер записи: 26
15-08-2019 дата публикации

LITHIUM METAL SECONDARY BATTERY AND BATTERY MODULE INCLUDING SAME

Номер: WO2019155452A2
Автор: WOO, Kyung-Hwa, YUN, Hyun-Woong, YU, Jeong-In, YOON, Jong-Keon
Принадлежит:

Disclosed are a lithium metal secondary battery and a battery module including the same, the lithium metal secondary battery comprising: an electrode assembly including an anode, a cathode, and a separator interposed between the anode and the cathode; a non-aqueous electrolyte for impregnating the electrode assembly therein; and a battery case in which the electrode assembly and the non-aqueous electrolyte are embedded, wherein the anode includes an anode current collector and a lithium metal layer, which is formed on at least one surface of the anode current collector, and the charging/discharging conditions of the lithium metal secondary battery allow for charging in a pressurized state and allow for discharging in a non-pressurized state or a pressurized state, and the pressure applied during discharging is controlled to be less than the pressure applied during charging when discharging is performed in the pressurized state.

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Номер записи: 27
03-05-2024 дата публикации

리튬 금속 이차전지용 양극 첨가제, 이를 포함하는 양극 및, 이를 포함하는 리튬 금속 이차전지의 활성화 방법

Номер: KR102663797B1
Автор: 이정범, 우경화
Принадлежит: 주식회사 엘지에너지솔루션

... 본 발명은 리튬 금속 이차전지의 활성화 방법에 관한 것으로, 1) 전지 활성화(formation) 공정의 방전 전압에서, 양극 활물질보다도 우선적으로 리튬 이온을 수용할 수 있는 양극 첨가제를 선택하고, 2) 일반적인 전지의 활성화(formation) 공정은 충전부터 시작하지만, 상기 양극 첨가제를 적용한 전지의 활성화(formation) 공정은 방전부터 시작한다.

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Номер записи: 28
17-10-2019 дата публикации

LITHIUM METAL SECONDARY BATTERY AND BATTERY MODULE INCLUDING SAME

Номер: WO2019155452A3
Автор: WOO, Kyung-Hwa, YUN, Hyun-Woong, YU, Jeong-In, YOON, Jong-Keon
Принадлежит:

Disclosed are a lithium metal secondary battery and a battery module including the same, the lithium metal secondary battery comprising: an electrode assembly including an anode, a cathode, and a separator interposed between the anode and the cathode; a non-aqueous electrolyte for impregnating the electrode assembly therein; and a battery case in which the electrode assembly and the non-aqueous electrolyte are embedded, wherein the anode includes an anode current collector and a lithium metal layer, which is formed on at least one surface of the anode current collector, and the charging/discharging conditions of the lithium metal secondary battery allow for charging in a pressurized state and allow for discharging in a non-pressurized state or a pressurized state, and the pressure applied during discharging is controlled to be less than the pressure applied during charging when discharging is performed in the pressurized state.

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Номер записи: 29
31-05-2019 дата публикации

LITHIUM ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Номер: WO2019103282A1
Автор: WOO, Kyung Hwa, SHON, Jeong Woo, YOON, Jong Keon, HAH, Hoejin
Принадлежит:

The present invention relates to a lithium electrode comprising: a lithium metal layer; an aluminum oxide (Al2O3) layer formed on the lithium metal layer; and a carbon layer formed on the aluminum oxide (Al2O3) layer, and a lithium secondary battery comprising the same. According to the present invention, the aluminum oxide layer can prevent a direct reaction between a nonaqueous electrolyte and the lithium metal layer. Particularly, the aluminum oxide layer has no electrical conductivity and thus causes lithium precipitation between the lithium metal layer and the aluminum oxide layer to prevent a lithium metal from being precipitated on a protection layer. Further, the carbon layer functions to allow a stable SEI film to be formed thereon.

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Номер записи: 30
08-05-2024 дата публикации

배터리 진단 장치 및 방법

Номер: KR20240062037A
Автор: 배윤정, 우경화, 정희석
Принадлежит:

... 본 발명의 일 실시예에 따른 배터리 진단 장치는 배터리의 충전 사이클에서 상기 배터리의 전압 및 전류를 포함하는 배터리 정보를 획득하도록 구성된 데이터 획득부; 및 상기 배터리 정보에 기반하여 상기 충전 사이클 동안의 정전류 충전 용량 비율 및 정전압 충전 용량 비율을 산출하고, 상기 정전류 충전 용량 비율 및 상기 정전압 충전 용량 비율에 기반하여 상기 배터리의 상태를 진단하도록 구성된 제어부를 포함한다.

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Номер записи: 31
31-03-2017 дата публикации

CATHODE FOR LITHIUM SECONDARY BATTERY WITH REDUCED THICKNESS SWELLING AND PREPARING METHOD THEREOF

Номер: KR1020170035569A
Автор: YOO, JUNG WOO, CHO, HYUNG SUK, PARK, JUN SOO, KIM, JE YOUNG, WOO, KYUNG HWA
Принадлежит:

The present invention relates to a cathode for a lithium secondary battery including a viscosity agent (CMC) and a binder (SBR) in an optimum composition ratio in consideration of the mechanical properties of the viscosity agent (CMC) and the binder (SBR) and a method for preparing the cathode. The cathode for a lithium secondary battery according to the present invention has an effect of improving electrode adhesion and, at the same time, reducing electrode thickness swelling. COPYRIGHT KIPO 2017 ...

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Номер записи: 32
19-09-2017 дата публикации

음극 슬러리 조성물 및 이의 제조방법

Номер: KR0101776989B1
Автор: 심혜림, 우경화
Принадлежит: 주식회사 엘지화학

... 본 발명의 (a) 카르복시메틸기를 포함하는 셀룰로오스계 화합물, 도전재 및 분산용매를 혼합하여 분산액을 제조하는 단계; (b) 상기 분산액 및 음극 활물질을 혼합하여 슬러리를 얻는 단계; 및 (c) 상기 슬러리에, 희석제 및 바인더를 첨가하여 슬러리 조성물을 제조하는 단계;를 포함하고, 상기 카르복시메틸기를 포함하는 셀룰로오스계 화합물은 치환도가 0.2 내지 1.5인 것이다. 고속분산법을 적용하여 분산장치의 회전속도를 제어하여 선-분산액을 제조함으로써 제조된 음극 슬러리 조성물은, 고분자량이면서 저치환도를 갖는 카르복시메틸기를 포함하는 셀룰로오스계 화합물을 포함시킬 수 있으면서도, 활물질이나 도전재의 균일한 분산을 유도할 수 있기 때문에, 전극 압축률을 감소시킬 수 있으며, 전극의 내부 저항을 감소시킬 수 있다.

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Номер записи: 33
21-01-2019 дата публикации

리튬 금속을 음극으로 하는 이차전지의 제조방법

Номер: KR1020190006647A
Автор: 우경화, 이재헌, 하회진, 윤종건
Принадлежит:

... 본 발명은 리튬 금속을 음극으로 하는 이차전지의 제조방법에 관한 것으로, 활성화 공정 시 초기 충전 이전에 일부 방전함으로써 리튬 금속 표면의 산화막을 제거하는 것을 특징으로 하는 리튬 이차전지의 제조방법이다. 이때 일부 방전시의 방전 전류 밀도는 0.01 내지 3 mA/㎠의 범위인 것이 바람직하다. 본 발명은 초기 일부 방전을 통하여 리튬 금속의 표면에 형성되는 산화막을 제거함으로써 이온전도도의 감소를 최소화하고, 리튬의 석출반응이 균일해지므로 전지 사이클 성능이 향상되는 효과가 있다.

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Номер записи: 34
28-03-2018 дата публикации

GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Номер: KR1020180031355A
Автор: WOO, KYUNG HWA, LEE, HYE JIN, LEE, JONG HWA
Принадлежит:

The present invention relates to a gel polymer electrolyte containing a lithium salt, a non-aqueous solvent having a boiling point of 200°C or higher, and a polymer, and a lithium secondary battery comprising the same. According to the present invention, the gel polymer electrolyte minimizes a loss of electrolytes during production steps by containing the non-aqueous solvent which is highly compatible with polymers and a high boiling point. Accordingly, it is possible to secure high ion conductivity by increasing content of an electrolytic solution in the electrolyte. In addition, since the gel polymer electrolyte, according to the present invention, has no risk of leakage and can be manufactured into a thin film owing to excellent mechanical strength, it is also possible to improve battery performance and safety when applied to lithium secondary batteries. COPYRIGHT KIPO 2018 (AA) Preparation example 4 (BB) Preparation example 3 (CC) Preparation example 2 ...

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Номер записи: 35
12-10-2017 дата публикации

ELECTRODE ACTIVE MATERIAL SLURRY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Номер: KR1020170113332A
Автор: WOO, KYUNG HWA, JEONG, KWANG HO, YOO, JUNG WOO, RHO, YE CHEOL, KIM, JE YOUNG
Принадлежит:

The present invention relates to electrode active material slurry, which comprises: a) an electrode active material; b) a conductive material; c) a binder; d) a solvent; and e) a cellulose-based compound having a weight average molecular weight (Mw) of 2,000,000 to 3,000,000, the degree of substitution of 1.0 to 1.2, and the viscosity measured with a Brookfield viscometer at a twelve rpm rate of 4,000 to 10,000 cps; and an electrode and a lithium secondary battery comprising the same. By using the cellulose compound having the molecular weight and the degree of substitution in a specific range, it is possible to improve the phase stability of the electrode active material slurry and to improve the battery characteristics. COPYRIGHT KIPO 2017 ...

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Номер записи: 36
12-10-2017 дата публикации

NEGATIVE ELECTRODE ACTIVE MATERIAL SLURRY, NEGATIVE ELECTRODE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY CONTAINING NEGATIVE ELECTRODE

Номер: KR1020170111748A
Автор: RHO, YE CHEOL, WOO, KYUNG HWA, JEONG, KWANG HO, KIM, JE YOUNG, YOO, JUNG WOO
Принадлежит:

The present invention relates to: negative electrode active material slurry having excellent dispersion stability and controlled viscosity; a negative electrode comprising the negative electrode active material layer formed therefrom; a method for producing the negative electrode using the same; and a lithium secondary battery comprising the negative electrode. The negative electrode active material slurry according to the present invention comprises a carbonaceous material containing an oxygen element having a specific value or less as the negative electrode active material to be easily adsorbed on a cellulose derivative used as a thickener, and to have sufficient adhesion even in the use of a relatively small amount of a binder, and as a cellulose derivative, carboxymethylcellulose and a compound represented by the chemical formula 1 is contained in a specific ratio, thereby suppressing a viscosity decrease at a high temperature and to improve the dispersion stability of the other component ...

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Номер записи: 37