Patents Examined by Zhongqing Wei
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Patent number: 12046758Abstract: The invention relates to a battery electrode foil comprising an aluminium alloy, wherein the aluminium alloy has the following composition in % by weight: Si: 0.01-0.15% by weight, Fe: 0.02-0.4% by weight, Cu: ?0.08% by weight, Mn: ?0.03% by weight, Mg: ?0.03% by weight, Cr: ?0.01% by weight, Ti: 0.005-0, 03% by weight, wherein the aluminium alloy can contain impurities up to a maximum of 0.05% in each case, in total up to a maximum of 0.15%, the remaining % by weight being aluminium, the proportion of aluminium however being at least 99.35% by weight; wherein the battery electrode foil has intermetallic phases with a diameter length of 0.1 to 1.0 ?m with a density of ?9500 particles/mm2. The invention further relates to a method for the production of a battery electrode foil, its use for the production of accumulators, and accumulators containing the battery electrode foil.Type: GrantFiled: November 20, 2018Date of Patent: July 23, 2024Assignee: Speira GmbHInventors: Galyna Laptyeva, Ulrich Hampel, Volker Denkmann
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Patent number: 12046713Abstract: An all-solid-state battery includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer. The solid electrolyte layer separates the positive electrode layer and the negative electrode layer. The negative electrode layer includes a first layer and a second layer. The second layer is interposed between the solid electrolyte layer and the first layer. The first layer contains a first particle group. The second layer contains a second particle group. The first particle group and the second particle group contain a silicon material. The second particle group has a smaller average particle diameter than the first particle group.Type: GrantFiled: October 19, 2020Date of Patent: July 23, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takayuki Hojo
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Patent number: 12034165Abstract: A negative electrode active material including silicon-based active material particles each including a core including SiOx, wherein 0?x?2, and a coating layer present on the core. Also, a negative electrode active material in which the coating layer is any one of a carbon coating layer or a polymer coating layer, and the coating layer includes a fluorinated material including at least one of an alkali metal or an alkaline earth metal.Type: GrantFiled: November 26, 2019Date of Patent: July 9, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Jung Hyun Choi, Yong Ju Lee, Eun Kyung Kim, Rae Hwan Jo, Dong Hyuk Kim, Il Geun Oh
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Patent number: 12034113Abstract: Solid-state lithium ion electrolytes of lithium zinc chloride derivative compounds having a crystal morphology in the Pmn21 space group are provided as materials for conducting lithium ions. An activation energy of the lithium aluminum chloride derivative compounds is from 0.15 to 0.40 eV and conductivities are from 0.01 to 15 mS/cm at 300 K. Compounds of specific formulae are provided and methods to alter the materials with inclusion of aliovalent ions shown. Lithium batteries containing the composite lithium ion electrolytes and electrodes containing the lithium aluminum chloride derivative compounds are also provided.Type: GrantFiled: June 23, 2020Date of Patent: July 9, 2024Assignees: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., UNIVERSITY OF MARYLAND, COLLEGE PARKInventors: Yifei Mo, Yunsheng Liu, Chen Ling
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Patent number: 11990599Abstract: The invention relates to a method for producing a dry film (3), wherein a dry powder mixture is processed into the dry film (3) by a rolling device comprising a first roller (2a) and a second roller (2b). The first roller (2a) has a higher circumferential rotational speed than the second roller (2b), and the dry film (3) is placed on the first roller (2a).Type: GrantFiled: May 14, 2018Date of Patent: May 21, 2024Assignees: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., TECHNISCHE UNIVERSITAT DRESDENInventors: Holger Althues, Sebastian Tschoecke, Benjamin Schumm, Stefan Kaskel, Christian Girsule, Daniel Jordan, Kay Schoenherr
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Patent number: 11978891Abstract: The present invention relates to a positive electrode active material, in which primary particles included in a secondary particle exhibit an aspect ratio gradient which gradually increases from the center of the secondary particle to the surface thereof, and a lithium secondary battery which uses a positive electrode containing the positive electrode active material.Type: GrantFiled: June 18, 2020Date of Patent: May 7, 2024Assignee: ECOPRO BM CO., LTD.Inventors: Moon Ho Choi, Gyeong Jae Heo, Hyun Jong Yu, Seung Hyun Choi, Yu Gyeong Chun
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Anode active material for lithium secondary battery and lithium secondary battery including the same
Patent number: 11967705Abstract: An anode active material for a lithium secondary battery includes a carbon-based particle including pores therein, a silicon-containing coating layer formed at an inside the pores of the carbon-based particle or on a surface of the carbon-based particle, and a carbon coating layer formed on the silicon-containing coating layer. A full width at half maximum (FWHM) of an O1s peak of a surface measured by an X-ray photoelectron spectroscopy (XPS) is 2.0 or more. A lithium secondary battery including the anode active material having improved initial discharge capacity and capacity efficiency is provided.Type: GrantFiled: July 1, 2022Date of Patent: April 23, 2024Assignee: SK ON CO., LTD.Inventors: Gwi Ok Park, Seok Keun Yoo, Dong Il Jang, Ju Ho Chung -
Patent number: 11961993Abstract: This application relates to a secondary battery and an apparatus including the secondary battery. Specifically, the secondary battery of this application includes a negative electrode plate, where the negative electrode plate includes a negative current collector and negative film layers where the negative film layers include a first negative film layer and a second negative film layer, the first negative film layer is disposed on at least one surface of the negative current collector and includes a first negative active material, and the second negative film layer is disposed on the first negative film layer and includes a second negative active material; the first negative active material includes natural graphite, and the second negative active material includes artificial graphite; the first negative active material satisfies 4.0?COI1?7.0; and the second negative active material satisfies 2.2?COI2?4.2.Type: GrantFiled: December 6, 2019Date of Patent: April 16, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventors: Meng Kang, Xiaobin Dong, Jiazheng Wang, Libing He
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Patent number: 11942645Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The separator has a multilayer structure in which a first filler layer containing phosphate particles, a porous resin substrate, and a second filler layer containing inorganic particles having higher heat resistance than the phosphate particles are stacked in this order from the negative electrode side. The first filler layer is disposed on the porous resin substrate in such a manner that the surface of the first filler layer faces the surface of the negative electrode. The phosphate particles have a BET specific surface area in the range of 5 m2/g or more and 100 m2/g or less.Type: GrantFiled: November 2, 2018Date of Patent: March 26, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Akihiko Takada, Masanori Sugimori, Nobuhiro Hirano, Yuki Morikawa, Yasunori Baba, Katsunori Yanagida
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Patent number: 11942656Abstract: New, improved or optimized battery separators, components, batteries, industrial batteries, inverter batteries, batteries for heavy or light industrial applications, forklift batteries, float charged batteries, inverters, accumulators, systems, methods, profiles, additives, compositions, composites, mixes, coatings, and/or related methods of water retention, water loss prevention, improved charge acceptance, production, use, and/or combinations thereof are provided or disclosed. More particularly, the present invention is directed to one or more improved battery separators having various improvements that may result in decreased water loss for a battery in which such a separator is incorporated, enhanced charge acceptance, or combinations thereof.Type: GrantFiled: November 5, 2015Date of Patent: March 26, 2024Assignee: Daramic, LLCInventors: Surendra K. Mittal, Jeffrey K. Chambers, Jörg Deiters
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Patent number: 11936034Abstract: A negative electrode active substance particle according to one embodiment of the present invention, comprises a mother particle that has: a silicate phase that includes Na, Si, and at least one element selected from M, M1, M2, M3 and M4 (M is an alkali earth metal, and M1, M2, M3 and M4 are elements other than alkali metals, alkali earth metals or Si); and silicon particles dispersed in the silicate phase. The contents of the elements in the silicate phase are: 9-52 mol % of Na; 3-50 mol % of M, M1, M2, M3 and M4; and at least 25 mol % of Si.Type: GrantFiled: December 26, 2018Date of Patent: March 19, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira
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Patent number: 11929504Abstract: Vertically aligned carbon nanotubes (VACNTs) (e.g., multi-walled VACNTs and methods of synthesizing the same are provided. VACNTs can be synthesized on nickel foam (Ni—F), for example by using a plasma-enhanced chemical vapor deposition (PECVD) technique. A wet chemical method can then be used to coat on the VACNTs a layer of nanoparticles, such as tin oxide (SnO2) nanoparticles.Type: GrantFiled: October 7, 2022Date of Patent: March 12, 2024Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTEESInventors: Wenzhi Li, Arun Thapa
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Patent number: 11929486Abstract: Composite electrodes are described herein, comprising a stainless steel substrate and silicon-containing nanostructures extending from the substrate, as well as processes for preparing such electrodes without requiring a catalyst by pre-treatment of the steel. At least a portion of the silicon-containing nanostructures are characterized by: being substantially devoid of a non-silicon catalyst material and/or a noble metal; and/or including along its length a metal constituent originating from the steel substrate; and/or including a metal silicide extending from the substrate and along at least a portion of its length; and/or being fused with at least one other silicon-containing nanostructure at a location removed from a surface of the substrate to form a sponge-like three-dimensional structure; and/or being stainless steel nanostructures having a layer of silicon disposed thereon.Type: GrantFiled: October 31, 2018Date of Patent: March 12, 2024Assignee: Technology Innovation Momentum Fund (Israel) Limited PartnershipInventors: Fernando Patolsky, Guy Davidy, Nimrod Harpak
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Patent number: 11923537Abstract: The present application discloses a negative electrode plate including a negative electrode active material layer including a first active material layer; wherein in a first cross section in a thickness direction of the negative electrode plate, the first active material has a size a in a direction parallel to the metal conductive layer, the first active material has a size b in the thickness direction, satisfying 0.8?a/b?20; in a second cross section in the thickness direction of the negative electrode plate, the first active material has a size c in the direction parallel to the metal conductive layer, the first active material has a size d in the thickness direction, satisfying 0.8?c/d?20; and the first cross section is parallel to a first direction, the second cross section is parallel to a second direction, and the first direction intersects the second direction.Type: GrantFiled: December 10, 2021Date of Patent: March 5, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventors: Jing Li, Yang Zhang, Qingrui Xue, Wei Li
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Patent number: 11916185Abstract: A lithium iron phosphate electrochemically active material for use in an electrode and methods and systems related thereto are disclosed. In one example, a lithium iron phosphate electrochemically active material for use in an electrode is provided including, a dopant comprising vanadium and optionally a co-dopant comprising cobalt.Type: GrantFiled: August 23, 2019Date of Patent: February 27, 2024Assignee: A123 SYSTEMS LLCInventors: Chuanjing Xu, Maha Hammoud, Judith M. LaForest, Hyojin Lee, Derek Johnson
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Patent number: 11894551Abstract: A main object of the present disclosure is to provide an active material wherein a volume variation due to charge/discharge is small. The present disclosure achieves the object by providing an active material comprising at least Si and Al, including a silicon clathrate type crystal phase, and a proportion of the Al to a total of the Si and the Al is 0.1 atm % or more and 1 atm % or less.Type: GrantFiled: May 25, 2021Date of Patent: February 6, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhiro Suzuki, Jun Yoshida
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Silicon-based anode material for secondary battery and preparation method thereof, secondary battery
Patent number: 11876220Abstract: A silicon-based anode material for secondary batteries, a preparation method thereof and a secondary battery are provided. The silicon-based anode material includes: an inner core including an Si particle and silicon oxide SiOx1, where 0<x1<2, a first shell layer including a compound of the general formula MySiOz (0<y?4, 0<z?5, and z?x1) and a C particle, wherein the first shell layer covers the inner core, and the contents of M and C in the first shell layer gradually increase from a side thereof close to the inner core to another side thereof far away from the inner core; and a second shell layer including a carbon film layer or a composite film layer formed by a carbon film layer and a conductive additive, the second shell layer covers the first shell layer. The first charge-discharge cycle capability of the silicon-based anode material is improved, and the manufacturing cost is reduced.Type: GrantFiled: December 30, 2019Date of Patent: January 16, 2024Assignee: SHANGHAI SHANSHAN TECH CO., LTD.Inventors: Yuhu Wu, Fei Ma, Dongdong Liu, Liangqin Wei, Zhihong Wu, Xiaoyang Ding, Fengfeng Li -
Patent number: 11876192Abstract: An assembled battery monitoring apparatus includes a plurality of monitoring circuits and a control circuit that transmits a command to the plurality of monitoring circuits at each of cycles. In response to receiving a communication interruption command including a value data, one of the plurality of monitoring circuits is configured to apply a calculation process on the value data included in the received communication interruption command to obtain an updated value data, and transmit a communication interruption command including the updated value data to a downstream side in the daisy chain connection up to the control circuit. In response to thereafter receiving a communication interruption command including a value data, the control circuit is configured to identify a location where a communication interruption occurs based on the received value data included in the received communication interruption command.Type: GrantFiled: December 10, 2020Date of Patent: January 16, 2024Assignee: DENSO CORPORATIONInventor: Takahito Hayakawa
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Patent number: 11876168Abstract: Composites comprising anode and cathode active materials conformally coupled to few-layered graphene, corresponding electrodes and related methods of preparation.Type: GrantFiled: July 7, 2021Date of Patent: January 16, 2024Assignee: NORTHWESTERN UNIVERSITYInventors: Mark C. Hersam, Kan-Sheng Chen, Ethan B. Secor
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Patent number: 11862787Abstract: The present invention relates to a negative electrode active material for a lithium-ion battery, containing a Si phase, a Si—Zr compound phase, and a Sn—X compound phase in which X is at least one element selected from the group consisting of Cu, Ti, Co, Fe, Ni, and Zr, the Sn—X compound phase has a proportion of 0.1 mass % to 18 mass % to the whole, and the Si phase has a proportion of 10 mass % to 80 mass % to the whole.Type: GrantFiled: January 30, 2020Date of Patent: January 2, 2024Assignee: DAIDO STEEL CO., LTD.Inventors: Yuta Kimura, Hiroyuki Miyamoto