Patents Issued in March 12, 2024
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Patent number: 11929461Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device, such as a lithium ion secondary battery, or a module that has excellent high-temperature storage performance. The electrolytic solution contains: a homocyclic compound other than aromatic compounds; and a cyclic dicarbonyl compound. The homocyclic compound contains at least one group selected from the group consisting of a nitrile group and an isocyanate group.Type: GrantFiled: April 5, 2017Date of Patent: March 12, 2024Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kenzou Takahashi, Shinichi Kinoshita, Hideo Sakata, Shigeaki Yamazaki, Hiroyuki Arima
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Patent number: 11929462Abstract: Described herein are compounds and compositions for electrolytes based on bidentate and monodentate fluorinated alcohols. Also described are batteries that include the compounds and electrolytes described herein.Type: GrantFiled: January 20, 2021Date of Patent: March 12, 2024Assignee: Utah State UniversityInventors: Tianbiao Liu, Jian Luo, Liping Zhang
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Patent number: 11929463Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.Type: GrantFiled: February 3, 2023Date of Patent: March 12, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Naoki Suzuki, Nobuyoshi Yashiro, Takanobu Yamada, Yuichi Aihara
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Patent number: 11929464Abstract: The present disclosure relates to a conveying roller for conveying a cell pole piece, the cell pole piece comprising a main body and pole tabs, the main body comprising a bearing area and a transition area, each of the pole tabs comprising a root portion connected to the transition area, a middle section and a top portion, and the conveying roller comprising: a central axis, a first end face and a second end face disposed opposite to each other along the central axis, a transmission portion and an avoidance position provided between the first end face and the second end face, wherein the transmission portion is rotatable around the central axis, the bearing area is contactable with the transmission portion, so that the transmission portion applies a transmission friction force to the cell pole piece, and the avoidance position is capable of avoiding the transition area and the pole tabs.Type: GrantFiled: October 12, 2019Date of Patent: March 12, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventors: Yiruo Wang, Xiaowei Zhang, Hongwen Chang, Xiao Wang, Peichao Wang, Xi Chen
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Patent number: 11929465Abstract: An energy storage element includes a housing enclosing an interior space, which housing is formed of a first metal housing part and a second metal housing part and has a substantially circular upper side and a substantially circular lower side spaced from one another and parallel to one another, and an annular housing side that connects the upper side and the lower side; a winding arranged in the interior, which winding includes a strip-shaped positive and a strip-shaped negative electrode and a strip-shaped separator arranged between the electrodes that are wound in a spiral around a winding axis; wherein the winding has a first end face and a second end face and an annularly circumferential winding outer side, the first and second end faces face in the direction of the circular and mutually parallel upper side and lower side such that the winding axis is oriented perpendicular or at least substantially perpendicular to the upper side and the lower side, and the winding has an axial cavity through which theType: GrantFiled: October 9, 2020Date of Patent: March 12, 2024Assignee: VARTA Microbattery GmbHInventor: Nils Barenthin
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Patent number: 11929466Abstract: Provided herein are energy storage devices. In some cases, the energy storage devices are capable of being transported on a vehicle and storing a large amount of energy. An energy storage device is provided comprising at least one liquid metal electrode, an energy storage capacity of at least about 1 MWh and a response time less than or equal to about 100 milliseconds (ms).Type: GrantFiled: May 11, 2023Date of Patent: March 12, 2024Assignee: Ambri Inc.Inventors: David J. Bradwell, David A. H. McCleary, Gregory A. Thompson, Allan Blanchard, Jeffrey B. Miller, Ronald Teel, William B. Langhauser, Alexander W. Elliott, Donald R. Sadoway, Michael J. McNeley, Ian Redfern
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Patent number: 11929467Abstract: A secondary battery including an electrode assembly having a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode, an electrolyte, and an exterior body housing the electrode assembly and the electrolyte. The exterior body has at least two step portions adjacent to each other and having top surfaces with different heights, the at least two step portions including a low step portion and a high step portion. A stepped surface is formed between the top surface of the low step portion and the top surface of the high step portion, and at least part of a board is arrangeable on the top surface of the low step portion.Type: GrantFiled: May 14, 2019Date of Patent: March 12, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Toru Kawai, Masahiro Otsuka
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Patent number: 11929468Abstract: 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: GrantFiled: March 24, 2021Date of Patent: March 12, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Ju Wan Lim, Duk Jin Oh, Myunghoon Kim
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Patent number: 11929469Abstract: The present application discloses a battery management system, a processing device, a battery management method, and a battery management and control system.Type: GrantFiled: April 19, 2021Date of Patent: March 12, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventors: Shichang Zhang, Ye Cao, Miaomiao Zhang
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Patent number: 11929470Abstract: An electric power charge and discharge system for an electronic device having a battery, by which the electronic device can be used for a long period of time. In a wireless communication device including a wireless driving portion including a first battery and a wireless charging portion including a second battery, the first battery is charged by electric power from a fixed power supply and the second battery is charged by using electromagnetic waves existing in an external space. Further, the first battery and the second battery are discharged alternately, and during a period in which the first battery is discharged, the second battery is charged.Type: GrantFiled: March 28, 2023Date of Patent: March 12, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shuhei Nagatsuka, Akihiro Kimura
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Patent number: 11929471Abstract: A device for detecting a thermal runaway of a battery module with a number of cells includes a current acquisition module that is configured to capture a set of currents, and a temperature acquisition module that is configured to capture a set of temperatures. The device includes a state of charge capturing module that is configured to capture a set of states, and a resistance calculation module that is configured to derive a set of resistances. The device includes a temperature prediction module that is configured to calculate a set of temperature predictors, and a runaway prediction module that is configured to calculate a set of runaway predictors. A warning module that is configured to set a warning indicator when at least one runaway predictor value of the set of runaway predictors exceeds a predefined threshold value.Type: GrantFiled: November 22, 2019Date of Patent: March 12, 2024Assignee: Rolls-Royce Deutschland Ltd & Co KGInventors: Gergely György Balazs, Kristian Fenech, Akos Hegedus
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Patent number: 11929472Abstract: A battery diagnosing apparatus includes a measuring unit configured to measure discharge capacity and temperature of a battery, an ohmic resistance determining unit configured to determine an ohmic resistance of the battery based on an impedance profile generated for the battery, and a control unit configured to calculate a capacity change rate by comparing the discharge capacity of the battery measured by the measuring unit with a reference capacity, calculate a resistance change rate by comparing the ohmic resistance determined by the ohmic resistance determining unit with a reference resistance, judge an internal gas generation level of the battery by comparing magnitudes of the calculated resistance change rate and a criterion resistance change rate, and judge an internal gas generation cause of the battery by comparing magnitudes of the calculated capacity change rate and a criterion capacity change rate.Type: GrantFiled: October 12, 2021Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Kyung-Hwa Woo, Yoon-Jung Bae, A-Ming Cha
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Patent number: 11929473Abstract: A method of recovering cobalt and nickel includes the steps of: adding alkaline to an acidic solution containing aluminum together with cobalt and nickel, adjusting pH of the acidic solution to 5 to 7, and converting the cobalt, the nickel and the aluminum into hydroxides thereof; recovering the hydroxides by solid-liquid separation, mixing the recovered hydroxides with an alkaline solution, and leaching aluminum contained in the hydroxides under a liquid condition of pH 8 or more; and recovering a cobalt hydroxide and a nickel hydroxide that aluminum is separated therefrom by solid-separation on a leachate.Type: GrantFiled: August 11, 2021Date of Patent: March 12, 2024Assignee: MITSUBISHI MATERIALS CORPORATIONInventor: Hiroki Muraoka
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Patent number: 11929474Abstract: A battery module comprising a plurality of cells and a casing comprising one or more cell-containing layers configured to house the cells is provided. The casing further comprises one or more cooling layers, such that each cooling layer is configured to contain the partial immersion cooling means in such a manner that said partial immersion cooling means are positioned directly around at least one electrode of the cells. A battery pack thermal management system for a vehicle comprising at least one of the battery modules is also provided, as well as a method of controlling the cell temperature of a battery module using said system.Type: GrantFiled: June 17, 2021Date of Patent: March 12, 2024Assignee: TECHNOLOGIES VE INC.Inventor: Vincent Georges Pierre Darlix
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Patent number: 11929475Abstract: A device for thermal control of a battery system includes a heating control module electrically connected to the battery system and a conversion device configured to control power output from the battery system. The heating control module is configured to measure a current through the conversion device, the measured current provided by the battery system of a vehicle during vehicle operation or provided by an energy source during vehicle charging. The heating control module is also configured to control the conversion device to generate an alternating current (AC) heating current using the measured current, and apply the AC heating current to the battery system to heat the battery system to a desired temperature.Type: GrantFiled: June 23, 2022Date of Patent: March 12, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Neeraj S. Shidore, Chandra S. Namuduri, Lei Hao, Shuonan Xu, Suresh Gopalakrishnan, Satish P. Ketkar, Daniel Robert Tylutki
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Patent number: 11929476Abstract: Disclosed are battery cooling apparatus for electric vehicle, method of manufacturing, and an insulator structure for the apparatus including an insulator having a side wall of the insulator define an upper open part, a tube inserted into the upper open part of the insulator, and a gap filler disposed in a space between an upper surface of the tube and the battery cell, wherein the side wall comprises an inner inclined surface inclined inward and a tube accommodation part formed in an inner surface of the side wall to accommodate an outer part of the tube, and a gap filler application space is formed between the battery cell and the tube, when the tube is inserted between the tube accommodation part of the insulator and an inner bottom surface of the insulator, and a top of the side wall being located higher than the upper surface of the tube.Type: GrantFiled: November 16, 2021Date of Patent: March 12, 2024Assignee: HYUNDAI MOBIS Co., Ltd.Inventor: Hwa Sung Kim
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Patent number: 11929477Abstract: A battery system can provide backup power for information technology (IT) equipment. In response to a lithium ion based battery being inactive (not charging or discharging), a temperature of the battery can be maintained at or below an optimal storage temperature of the battery, using a primary cooling system. If the primary cooling system is insufficient, the temperature can be maintained at or below the optimal storage temperature with a secondary cooling system that runs in addition to the primary system. The optimal storage temperature of the battery is determined based on an effort to cool the battery and a degradation of the battery.Type: GrantFiled: February 24, 2021Date of Patent: March 12, 2024Assignee: BAIDU USA LLCInventors: Shuai Shao, Tianyi Gao
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Patent number: 11929478Abstract: A filling member is interposed between pouch cells of a battery pack, the filling member has a first surface orthogonal to a thickness direction thereof and a second surface opposite to the first surface, ?d1 and ?d2 defined below satisfy formulas (1) and (2) below, respectively, ?p satisfies formula (3) below, and ?d1>?d2 holds: (1) ?d1?3.0×10?3 (m2·K)/W, (2) ?d2?8.0×10?3 (m2·K)/W, (3) 0.5 K/W??p1?1000 K/W, and (4) 0.5 K/W??p2?1000 K/W. ?d1 is heat transfer resistance when the average temperature of one of the first and second surfaces exceeds 180° C., ?d2 is heat transfer resistance when the average temperatures of the first and second surfaces both do not exceed 80° C., ?p1 is heat transfer resistance when the average temperature exceeds 180° C., ?p2 is heat transfer resistance when the average temperatures do not exceed 80° C.Type: GrantFiled: February 2, 2021Date of Patent: March 12, 2024Assignee: Mitsubishi Chemical CorporationInventors: Tomohiro Kawai, Hiroki Hayami
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Patent number: 11929479Abstract: Power supply device includes a plurality of secondary battery cells, a pair of end plates that cover both end faces of battery stack in which the plurality of secondary battery cells are stacked, a plurality of fastening members that fasten end plates to each other, a plurality of pressing parts that press upper surfaces of the plurality of secondary battery cells respectively, and buffer interposed between pressing parts and the upper surfaces of secondary battery cells. Buffer includes a plurality of covers made of resin, and a connecting part, having flexibility, for connecting two of the plurality of covers. Buffer is configured such that each of the plurality of covers is disposed on the upper surface of corresponding one of secondary battery cells, and each of pressing part abuts on the upper surface of the corresponding cover.Type: GrantFiled: July 26, 2019Date of Patent: March 12, 2024Assignee: SANYO Electric Co., Ltd.Inventors: Go Yamashiro, Hiroyuki Takahashi
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Patent number: 11929480Abstract: The disclosure relates to the technical field of batteries, and proposes a battery and a battery apparatus. The battery includes: a housing; a cell, the cell disposed in the housing. A pole element is disposed on the housing. A heat sink is disposed on the housing.Type: GrantFiled: July 12, 2021Date of Patent: March 12, 2024Assignee: CALB Co., Ltd.Inventors: Chengkun Tang, Fangfang Pan
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Patent number: 11929481Abstract: A method for manufacturing a rechargeable battery includes forming a mixture layer and an insulating layer on an electrode substrate having an edge extending in a specified direction so that an exposed portion where the electrode substrate is exposed extends between the edge and the insulating layer; pressing the mixture layer; and stretching an extension portion, located between the edge and the mixture layer, and the insulating layer in the specified direction. The stretching includes applying a stress greater than or equal to yield stress of the electrode substrate or greater than or equal to 0.2% proof stress of the electrode substrate and less than tensile strength of the electrode substrate to the extension portion, and applying a stress greater than or equal to yield stress of the insulating layer or greater than or equal to 0.2% proof stress of the insulating layer to the insulating layer.Type: GrantFiled: November 30, 2022Date of Patent: March 12, 2024Assignees: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.Inventors: Masakazu Umehara, Naomichi Ishikawa, Naoto Ooshiro, Yuuki Kudou, Hideki Hayashi, Hiroki Yamada, Naoya Kishimoto
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Patent number: 11929482Abstract: Methods, systems, and compositions for the solution-phase deposition of thin films comprising one or more artificial solid-electrolyte interphase (SEI) layers. The thin films can be coated onto the surface of porous components of electrochemical devices, such as solid-state electrolytes employed in rechargeable batteries. The methods and systems provided herein involve exposing the component to be coated to different liquid reagents in sequential processing steps, with optional intervening rinsing and drying steps. Processing may occur in a single reaction chamber or multiple reaction chambers.Type: GrantFiled: November 18, 2020Date of Patent: March 12, 2024Assignee: CORESHELL TECHNOLOGIES, INCORPORATEDInventors: Sourav Roger Basu, Jonathan Tan
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Patent number: 11929483Abstract: The present application provides a positive electrode and a lithium-ion battery. The positive electrode comprises a current collector; a first active material layer comprising a first active material; and a second active material layer; wherein the first active material layer is arranged between the current collector and the second active material layer, the first active material layer comprises a first active material, and the first active material is at least one selected from a group consisting of a modified lithium transition metal oxide positive electrode material and a modified lithium iron phosphate. The positive electrode of the present application helps to improve the thermal stability of the lithium-ion battery, and the improvement of the thermal stability may reduce the proportion of the thermal runaway when the lithium-ion battery is internally short-circuited so that the safety performance of the lithium-ion battery is improved.Type: GrantFiled: October 24, 2018Date of Patent: March 12, 2024Assignee: Ningde Amperex Technology LimitedInventors: Xiaozhen Zhang, Fan Yang, Changming Qu, Yisong Su, Chaowang Lin, Huawei Zhong
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Patent number: 11929484Abstract: Disclosed in the present application is a compound, comprising nano silicon, a lithium-containing compound and a carbon coating, or comprising nano silicon, silicon oxide, a lithium-containing compound, and a carbon coating. The method comprises: (1) solid-phase mixing of carbon coated silicon oxide with a lithium source; and (2) preforming heat-treatment of the pre-lithium precursor obtained in step (1) in a vacuum or non-oxidising atmosphere to obtain a compound. The method is simple, and has low equipment requirements and low costs; the obtained compound has a stable structure and the structure and properties do not deteriorate during long-term storage, a battery made of cathode material containing said compound exhibits high delithiation capacity, high initial coulombic efficiency, and good recycling properties, the charging capacity is over 1920 mAh/g, the discharging capacity is over 1768 mAh/g, and the initial capacity is over 90.2%.Type: GrantFiled: February 27, 2018Date of Patent: March 12, 2024Assignee: BTR NEW MATERIAL GROUP CO., LTD.Inventors: Chunlei Pang, Lijuan Qu, Jianguo Ren, Min Yue
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Patent number: 11929485Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode active material layer that includes a positive electrode active material, a fluorine-based binder having a melting point from 152° C. to 166° C., a conductive assistant having a specific surface area from 1000 m2/g to 1500 m2/g, and a vinylpyrrolidone-based polymer.Type: GrantFiled: February 18, 2021Date of Patent: March 12, 2024Assignee: Murata Manufacturing Co., Ltd.Inventors: Nobuyuki Iwane, Hiroshi Horiuchi
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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: 11929487Abstract: A method of preparing a negative electrode for a lithium secondary battery, which includes forming a negative electrode mixture layer including a negative electrode active material on a negative electrode current collector, disposing lithium metal powder on at least a part of the negative electrode mixture layer, pressing the negative electrode mixture layer on which the lithium metal powder is disposed, wetting the pressed negative electrode mixture layer with a first electrolyte solution, and drying the wet negative electrode mixture layer. A battery including the negative electrode of the present invention has enhanced rapid charge/discharge characteristics and enhanced lifespan characteristics.Type: GrantFiled: January 25, 2019Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Oh Byong Chae, Sang Wook Woo, Je Young Kim, Yoon Ah Kang, Jun Hyuk Song
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Patent number: 11929488Abstract: The present invention relates to a hydrogen storage alloy, an electrode for a Ni-MH battery, a secondary battery, and a method for preparing the hydrogen storage alloy. The chemical composition of the hydrogen storage alloy is expressed by the general formula La(3.0˜3.2)xCexZrySm(1-(4.11˜4.2)x-y)NizCouMnvAlw, where x, y, z, u, v, w are molar ratios, and 0.14?x?0.17, 0.02?y?0.03, 4.60?z+u+v+w?5.33, 0.10?u?0.20, 0.25?v?0.30, and 0.30?w?0.40. The atomic ratio of the metal lanthanum (La) to the metal cerium (Ce) is fixed at 3.0 to 3.2, which satisfies the requirements of the overcharge performance of the electrode material. A side elements are largely substituted by samarium (Sm) element, that is, the atomic ratio of Sm on the A side is 25.6% to 42%, so as to solve the problem of shortened cycle life caused by the small amount of cobalt (Co) atoms.Type: GrantFiled: May 28, 2019Date of Patent: March 12, 2024Assignees: South China University of Technology, Sihui Dabowen Industrial Co., Ltd., Guangdong Research Institute of Rare-MetalInventors: Liuzhang Ouyang, Cheng Tan, Min Zhu, De Min, Hui Wang, Tongzhao Luo, Fangming Xiao, Renheng Tang
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Patent number: 11929489Abstract: A manufacturing method for an electrode plate and an electrode plate are provided. The method includes deposition-layer forming to form a deposition layer in which active material particles and binder particles are deposited on a surface of a current collecting foil and heat pressing to form an electrode layer on the surface of the current collecting foil by heating and compressing a deposition-layer-formed current collecting foil having the deposition layer on the surface of the current collecting foil. The deposition layer includes a first deposition layer placed on a side of the current collecting foil and a second deposition layer constituting a surface of the deposition layer. The deposition-layer forming includes forming the deposition layer in which a content rate of the binder particles in the second deposition layer is lower than a content rate of the binder particles in the first deposition layer.Type: GrantFiled: February 3, 2022Date of Patent: March 12, 2024Assignees: PRIME PLANET ENERGY & SOLUTIONS, INC., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sokichi Okubo, Tomoyuki Uezono, Momoka Miyajima, Nagisa Shimasaki, Masaki Watanabe, Miyuki Matsuyama
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Patent number: 11929490Abstract: The present disclosure relates to an anode for a lithium secondary battery, wherein an anode material layer is formed on at least one surface of an anode current collector, and the anode material layer includes large-particle graphite, a small-particle silicon-based material, and fine-particle graphite, and satisfies the following conditions 1 to 3: [Condition 1] Average diameter D50 of the large-particle graphite (D1): 1 to 50 ?m [Condition 2] Average diameter D50 of the small-particle silicon-based material (D2): 0.155D1 to 0.414D1 [Condition 3] Average diameter D50 of the fine-particle graphite (D3): 0.155D1 to 0.414D1, or 0.155D2 to 0.414D2.Type: GrantFiled: June 26, 2019Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Junghyun Choi, Hyeon Min Song, Joo Hwan Sung, Han Sol Park, Minsu Cho, Sunghae Park, Jingoo Kwak, Younguk Park, Sue Jin Kim, Jinsu Jang
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Patent number: 11929491Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium. A content of the first silicon-based active material is in a range from 2 wt % to 20 wt % based on a total weight of the anode active material layer.Type: GrantFiled: June 6, 2023Date of Patent: March 12, 2024Assignee: SK ON CO., LTD.Inventors: Hwan Ho Jang, Moon Sung Kim, Hyo Mi Kim, Sang Baek Ryu, Da Hye Park, Seung Hyun Yook, Da Bin Chung, Jun Hee Han
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Patent number: 11929492Abstract: A lithium-ion secondary battery and related preparation method thereof, battery module, battery pack and apparatus. The lithium-ion secondary battery includes a positive electrode plate, a negative electrode plate, an electrolyte and a separator, wherein the positive electrode plate includes a positive electrode current collector and a first positive electrode active material layer and a second positive electrode active material layer sequentially disposed on at least one side of the positive electrode current collector; the lithium-ion secondary battery satisfies: ?1?log10(u/v)×w?15.5, wherein, u is a thickness of the first positive electrode active material layer in microns, v is a thickness of the second positive electrode active material layer in microns, w is a conductivity of the electrolyte at a temperature of 25° C. in mS·cm?1. The lithium-ion secondary battery has excellent performance such as low discharge resistance at low SOC and low gas production at high temperature.Type: GrantFiled: December 31, 2021Date of Patent: March 12, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventors: Zhiqiang Li, Qifeng Li, Changlong Han
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Patent number: 11929494Abstract: An electrode material for a lithium ion secondary battery and method of forming the same, the electrode material including composite particles, each composite particle including: a primary particle including an electrochemically active material; and an envelope disposed on the surface of the primary particle. The envelope includes turbostratic carbon having a Raman spectrum having: a D band having a peak intensity (ID) at wave number between 1330 cm-1 and 1360 cm-1; a G band having a peak intensity (IG) at wave number between 1530 cm-1 and 1580 cm-1; and a 2D band having a peak intensity (I2D) at wave number between 2650 cm-1 and 2750 cm-1. In one embodiment, a ratio of ID/IG ranges from greater than zero to about 1.1, and a ratio of I2D/IG ranges from about 0.4 to about 2.Type: GrantFiled: January 10, 2023Date of Patent: March 12, 2024Assignee: NANOGRAF CORPORATIONInventors: Joshua J. Lau, Aaron Yost, James McKinney, Cary Michael Hayner, Jack Cavanaugh, Seonbaek Ha
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Patent number: 11929495Abstract: In some implementations, the anode includes a current collector, a first anode mixture layer formed on at least one surface of the current collector, and a second anode mixture layer formed on the first anode mixture layer. The first anode mixture layer and the second anode mixture layer include a carbon-based active material, respectively. The first anode mixture layer includes a first binder, a first silicon-based active material, and a first conductive material. The second anode mixture layer includes a second binder, a second silicon-based active material, and a second conductive material. Contents of the first conductive material and the second conductive material are different from each other with respect to the total combined weight of the first anode mixture layer and the second anode mixture layer. Types of the first silicon-based active material and the second silicon-based active material are different from each other.Type: GrantFiled: May 18, 2023Date of Patent: March 12, 2024Assignee: SK ON CO., LTD.Inventors: Hyo Mi Kim, Moon Sung Kim, Sang Baek Ryu, Da Hye Park, Seung Hyun Yook, Hwan Ho Jang, Kwang Ho Jeong, Da Bin Chung, Jun Hee Han
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Patent number: 11929496Abstract: A positive electrode and a secondary battery including the same are provided. The positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, wherein the positive active material layer includes a positive electrode active material, a binder, and a multi-walled carbon nanotube, wherein the multi-walled carbon nanotube has an average length of 1-2 ?m and has a length standard deviation of 0.5 ?m or less.Type: GrantFiled: February 1, 2019Date of Patent: March 12, 2024Assignee: LG Energy Solution, Ltd.Inventors: Jung Woo Yoo, Ye Lin Kim, Tae Gon Kim
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Patent number: 11929497Abstract: A negative electrode active material as well as a method of preparing a negative electrode active material which includes preparing a silicon-based compound including SiOx, wherein 0.5<x<1.3; disposing a polymer layer including a polymer compound on the silicon-based compound; disposing a metal catalyst layer on the polymer layer; heat treating the silicon-based compound on which the polymer layer and the metal catalyst layer are disposed; and removing the metal catalyst layer, wherein the polymer compound includes any one selected from the group consisting of glucose, fructose, galactose, maltose, lactose, sucrose, a phenolic resin, a naphthalene resin, a polyvinyl alcohol resin, a urethane resin, polyimide, a furan resin, a cellulose resin, an epoxy resin, a polystyrene resin, a resorcinol-based resin, a phloroglucinol-based resin, a coal-derived pitch, a petroleum-derived pitch, a tar and a mixture of two or more thereof.Type: GrantFiled: November 1, 2019Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Dong Hyuk Kim, Eun Kyung Kim, Yong Ju Lee, Rae Hwan Jo, Jung Hyun Choi
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Patent number: 11929498Abstract: A silicon-carbon complex comprising carbon-based particles and silicon-based particles, wherein the silicon-based particles are dispersed and positioned on surfaces of the carbon-based particles, the carbon-based particles have a specific surface area of 0.4 m2/g to 1.5 m2/g, and the silicon-based particles are doped with one or more elements selected from the group consisting of Mg, Li, Ca, and Al, and a negative electrode active material for lithium secondary battery comprising the same.Type: GrantFiled: October 26, 2018Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Su Min Lee, Eun Kyung Kim, Yong Ju Lee, Rae Hwan Jo, Dong Hyuk Kim, Se Mi Park
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Patent number: 11929499Abstract: A lithium manganate positive electrode active material, comprising a lithium manganate matrix and a cladding layer as a “barrier layer” and a “functional layer” are described. The cladding layer can not only “prevent” the transition metal ions which have been produced by the lithium manganate matrix from directly “running” into the electrolyte solution, but also “prevent” the hydrofluoric acid in the electrolyte solution from directly contacting with the lithium manganate substrate, and then prevent the lithium manganate matrix from dissolving out more transition metal manganese ions; as a “functional layer”, the cladding layer contains various effective ingredients inside, which can reduce the transition metal manganese ions already present inside the battery through chemical reactions or adsorption effects, thus slowing down the generation of transition metal manganese and the decomposition of the SEI film (solid electrolyte interphase film) catalyzed by the transition metal manganese.Type: GrantFiled: July 14, 2022Date of Patent: March 12, 2024Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Shaocong Ouyang, Chenghua Fu, Tingzhen Xie, Bo Wang
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Patent number: 11929500Abstract: An electrode assembly, in which a positive electrode, a separator, and a negative electrode are repeatedly stacked includes a shrinkage film made of a material having a thermal shrinkage rate greater than that of the separator, the shrinkage film being shrunk in area at a specific temperature or more, wherein the shrinkage film is disposed instead of the separator at one or more positions between the positive electrode and the negative electrode so that, when the shrinkage film is shrunk by an increase of a temperature, the positive electrode and the negative electrode, which are adjacent to each other with the shrinkage film therebetween, partially contact each other to generate microcurrent.Type: GrantFiled: January 6, 2020Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Ji Hyun Choi, Han Young Lee
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Patent number: 11929501Abstract: A method for producing a positive electrode active material for a non-aqueous electrolyte secondary battery. The method includes providing a composition containing a first lithium transition metal composite oxide having a 50% particle size 1D50 in a first volume cumulative particle size distribution of 0.1 ?m or more and less than 3.2 ?m and a first liquid medium; and granulating the composition to obtain a second lithium transition metal composite oxide having a 50% particle size 2D50 in a second volume cumulative particle size distribution greater than 1D50. The second lithium transition metal composite oxide has a ratio of a 90% particle size 3D90 in a third volume cumulative particle size distribution measured after the ultrasonic treatment to a 90% particle size 2D90 in the second volume cumulative particle size distribution measured before the ultrasonic treatment (3D90/2D90) of 0.53 or less.Type: GrantFiled: September 29, 2021Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventors: Hayaki Matsumoto, Yoshitomo Miyashita
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Patent number: 11929502Abstract: A stabilized lithium metal oxide cathode material comprises microparticles of lithium metal oxide in which individual particles thereof a core of lithium metal oxide and a coating of a different lithium metal oxide surrounding the core. There is an interface layer between the cores and the coatings in which there are gradients of metal ions in the direction of coating to core. The materials are made by a three stage process involving coprecipitating precursor metal hydroxide core particles at a controlled pH; coprecipitating a different metal hydroxide coating on the particles without controlling the pH; and then calcining the resulting coated precursor particles with lithium hydroxide to form the stabilized lithium metal oxide material.Type: GrantFiled: April 12, 2023Date of Patent: March 12, 2024Assignee: UCHICAGO ARGONNE, LLCInventors: Albert L. Lipson, Jessica L. Durham
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Patent number: 11929503Abstract: Provided is a positive electrode for a secondary battery in which carbon nanotubes are used, of which an initial resistance is small, and that suppresses an increase in resistance when charging and discharging are repeated. The positive electrode for a secondary battery disclosed herein includes a positive-electrode current collector and a positive-electrode active material layer provided on the positive-electrode current collector. The positive-electrode active material layer contains a positive-electrode active material and carbon nanotubes, and substantially does not contain a resin binder. The positive-electrode active material layer includes a layer-like region that is in contact with the positive-electrode current collector, and a region other than the layer-like region. Both of the layer-like region and the region other than the layer-like region contain carbon nanotubes.Type: GrantFiled: August 12, 2021Date of Patent: March 12, 2024Assignee: PRIME PLANET ENERGY & SOLUTIONS, INC.Inventor: Yuji Yamamoto
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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: 11929505Abstract: Methods are disclosed for manufacturing an electrode for use in a device such as a secondary battery. Electrodes may include a first layer having first active particles adhered together by a binder, a second layer having second active particles adhered together by a binder, and an interphase layer interposed between the first and second layers. In some examples, the interphase layer may include an interpenetration of the first and second particles, such that substantially discrete fingers of the first layer interlock with substantially discrete fingers of the second layer.Type: GrantFiled: December 28, 2021Date of Patent: March 12, 2024Assignee: EnPower, Inc.Inventors: Kjell William Schroder, Adrian Yao, Neelam Singh
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Patent number: 11929506Abstract: Provided is a binder composition for a non-aqueous secondary battery containing: a particulate polymer formed of a block copolymer including an aliphatic conjugated diene monomer unit and a block region formed of an aromatic vinyl monomer unit; at least one saturated hydrocarbon selected from the group consisting of a chain alkane having a carbon number of not less than 5 and not more than 8 and a cycloalkane having a carbon number of not less than 5 and not more than 8; and water. The content of the saturated hydrocarbon is not less than 0.001 parts by mass and not more than 0.1 parts by mass per 100 parts by mass of the particulate polymer.Type: GrantFiled: February 27, 2019Date of Patent: March 12, 2024Assignee: ZEON CORPORATIONInventors: Tetsuya Akabane, Hiroto Kidokoro
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Patent number: 11929507Abstract: A binder composition contains an organic solvent and a binder that includes a particulate polymer A and a highly soluble polymer B. The particulate polymer A includes an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.0 mass % and not more than 10.0 mass % and a (meth)acrylic acid ester monomer unit in a proportion of not less than 30.0 mass % and not more than 98.0 mass %. The particulate polymer A includes two particulate polymers A1 and A2 having different volume-average particle diameters. The volume-average particle diameters D50A1 and D50A2 of these particulate polymers A1 and A2 satisfy a formula: D50A2>D50A1?50 nm.Type: GrantFiled: June 27, 2019Date of Patent: March 12, 2024Assignee: ZEON CORPORATIONInventors: Yukie Ito, Kenya Sonobe, Maki Mesuda
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Patent number: 11929508Abstract: An electrode for a secondary battery includes a current collector, a first electrode mixture layer disposed on at least one surface of the current collector and including styrene butadiene rubber, and a second electrode mixture layer disposed on the first electrode mixture layer and including a second styrene butadiene rubber. The first styrene butadiene rubber and the second styrene butadiene rubber have a repeating unit of styrene derived structure and a repeating unit of a butadiene derived structure, the first styrene butadiene rubber containing 40 to 90 mol % of a butadiene monomer based on total content of a monomer, and the second styrene butadiene rubber having a lower content of a butadiene monomer than the content of the first styrene butadiene rubber.Type: GrantFiled: March 2, 2022Date of Patent: March 12, 2024Assignee: SK On Co., Ltd.Inventors: Hyo Mi Kim, Kwang Ho Jeong
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Patent number: 11929509Abstract: Disclosed are a lithium metal composite electrode material for a lithium metal battery, a preparation method for the same, and an electrode, battery, battery module, battery pack and apparatus comprising the same. The lithium metal composite electrode material comprises: lithium metal particles and a lithium-containing conductive layer serving as a supporting framework, the supporting framework being filled with the lithium metal particles; wherein the lithium-containing conductive layer comprises an inorganic lithium compound and a lithium alloy.Type: GrantFiled: December 24, 2021Date of Patent: March 12, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventors: Chengdu Liang, Yongsheng Guo, Tao Zhang, Chengyong Liu, Jun Yang
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Patent number: 11929510Abstract: The present application relates to a secondary battery and manufacturing method thereof, a battery module and an apparatus. The secondary battery includes an electrode assembly including a main body portion and a tab extending out from the main body portion; a current collecting member including a guiding section, which extends in a direction perpendicular to a length direction of the electrode assembly; a transition connecting piece, being separately provided from the current collecting member and including a current collecting portion and a fixing portion, the current collecting portion being adapted to connect with the tab to form a first connection region, the fixing portion being adapted to connect with the guiding section to form a second connection region, and respective projections of the first connection region and the second connection region on a plane perpendicular to the length direction do not overlap.Type: GrantFiled: April 11, 2022Date of Patent: March 12, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventor: Hu Xu
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Patent number: 11929511Abstract: A method of manufacturing a membrane-catalyst assembly including an electrolyte membrane and a catalyst layer bonded to the electrolyte membrane, the method including: a liquid application step of applying, in the atmosphere, a liquid to only a surface of the electrolyte membrane before bonding; and a thermocompression bonding step of bonding, to the catalyst layer, the electrolyte membrane to which the liquid is applied, by thermocompression bonding. Provided is a method of manufacturing a membrane-catalyst assembly including a polymer electrolyte membrane and a catalyst layer bonded to the polymer electrolyte membrane, in which the manufacturing method can achieve both the relaxation of thermocompression bonding conditions and the improvement of adhesion between the catalyst layer and the electrolyte membrane with high productivity.Type: GrantFiled: December 21, 2020Date of Patent: March 12, 2024Assignee: TORAY INDUSTRIES, INC.Inventors: Yuta Shintaku, Ryuta Sakashita, Daisuke Izuhara, Kiyoshi Minoura, Mei Kumagai