Patents Examined by Jonathan Crepeau
  • Patent number: 11031632
    Abstract: The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: June 8, 2021
    Inventors: Dong Hun Lee, Dae Jin Lee, Ji Hoon Ryu, Gi Beom Han, Dong Hwi Kim, Wang Mo Jung, Sang Wook Lee, Eun Sol Lho
  • Patent number: 11027978
    Abstract: A silicon nanoparticle-containing hydrogen polysilsesquioxane calcined product to be covered by the invention, represented by general formula SiOx2Hy2 (0.3<x2<1.5, 0.01<y2<0.35), containing 5% by weight to 65% by weight of silicon nanoparticles having a volume-basis mean particle size of more than 10 nanometers and less than 500 nanometers, having a chemical bond between a surface of the silicon nanoparticles and a silicon oxide structure derived from hydrogen polysilsesquioxane, having a Si—H bond, and substantially containing no carbon is silicon oxide applicable to a negative electrode active material for a secondary battery having excellent discharging capacity, initial charging and discharging efficiency and cycle characteristics.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: June 8, 2021
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yoshihito Takano, Tetsuro Kizaki, Hirotsuna Yamada, Masakazu Kondo, Akira Takahashi
  • Patent number: 11024853
    Abstract: According to the present disclosure, there is provided a technique making it possible to improve suitably the performance of a nonaqueous electrolyte secondary cell in which a SEI film is formed on the surface of a negative electrode active material. The nonaqueous electrolyte secondary cell disclosed herein includes a positive electrode 10, a negative electrode 20, and a nonaqueous electrolytic solution, wherein a negative electrode SEI film 29 including at least a LiBOB skeleton and a fluorosulfonic acid skeleton is formed on the surface of a negative electrode active material 28, and a positive electrode SEI film 19 including at least a phosphoric acid skeleton is formed on the surface of a positive electrode active material 18.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: June 1, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Ishii, Masahiro Morita, Risa Sato, Ryo Hanasaki, Yusuke Onoda, Koji Takahata, Atsushi Watarai
  • Patent number: 11024864
    Abstract: An assembly device may be employed to vertically stack a fuel cell stack having alternating membrane-electrode units and bipolar plates. The assembly device may include a base plate, a cover plate, and connecting pieces positioned at each of two end faces of the base plate and cover plate. A substantially cuboidal assembly chamber may be defined inside the assembly device by a plurality of vertically oriented locating strips, in order, via the locating strips, to position the membrane-electrode units and bipolar plates relative to one another during stacking. The assembly device may further include a drive for synchronous displacement of the locating strips.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: June 1, 2021
    Assignees: THYSSENKRUPP SYSTEM ENGINEERING GMBH, THYSSENKRUPP AG
    Inventor: Andreas Walter
  • Patent number: 11024893
    Abstract: A battery of modular construction that stores electrical energy includes a battery housing, a module assembly including at least two battery modules, each with at least one positive and at least one negative electrode, and a pressing means. A method of safety operation of the battery includes equipping the battery with at least one safety means that triggers a reduction in the mechanical pressure exerted onto the battery modules when there is a defect in at least one of the battery modules.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: June 1, 2021
    Assignees: VARTA Microbattery GmbH, VW Kraftwerk GmbH
    Inventors: Torsten Knape, Werner Schreiber
  • Patent number: 11024922
    Abstract: Disclosed herein is a cap assembly disposed on an open upper end part of a cylindrical can of a battery, the battery being configured to have an electrode assembly mounted in the cylindrical can, the cap assembly including a safety vent configured to rupture in order to exhaust gas when the interior pressure of the battery reaches a predetermined pressure limit, an upwardly-protruding cap plate disposed on the upper part of the safety vent, the cap plate having a through-opening configured to receive the gas exhausted therethrough, a current interrupt member attached to the lower end of the safety vent, the current interrupt member configured to interrupt electric current when the interior pressure of the battery reaches the predetermined pressure limit, and a guide member attached to the inside of the cap plate, the guide member being configured to prevent escape of a ruptured portion of the safety vent.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 1, 2021
    Inventors: Sang Gu Ji, Sang Uck Kim, Cheon Hee Bok, Myung An Lee, Geun Young Park, Yong Han Kim, Da Na Kim
  • Patent number: 11018399
    Abstract: The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR1)n(COOMx+1/x)m. In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, R1 represents H, —(CH2)kCOOMx+1/x or —(CH2)k—SO3Mx+1/x, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, H+ or NH4+, whereby not all variables of M are defined simultaneously as H+, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: May 25, 2021
    Assignee: Daramic, LLC
    Inventors: Jorg Deiters, Klaus Heinrich Ihmels
  • Patent number: 11011747
    Abstract: A lithium metal oxide powder for a cathode material in a rechargeable battery, consisting of a core and a surface layer, the surface layer being delimited by an outer and an inner interface, the inner interface being in contact with the core, the core having a layered crystal structure comprising the elements Li, M and oxygen, wherein M has the formula M=(Niz (Ni1/2 Mn1/2)y Cox)1-k Ak, with 0.15?x?0.30, 0.20?z?0.55, x+y+z=1 and 0<k?0.1, wherein the Li content is stoichiometrically controlled with a molar ratio 0.95?Li:M?1.10; wherein A is at least one dopant and comprises Al; wherein the core has an Al content of 0.3-3 mol % and a F content of less than 0.05 mol %; and wherein the surface layer has an Al content that increases continuously from the Al content of the core at the inner interface to at least 10 mol % at the outer interface, and a F content that increases continuously from less than 0.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: May 18, 2021
    Assignees: Umicore, Umicore Korea Ltd.
    Inventors: Xin Xia, Jens Paulsen, JiHye Kim, Song-Yi Han
  • Patent number: 11011761
    Abstract: A fuel cell system includes: a fuel cell stack of fuel cells that generate electricity by electrochemical reaction between hydrogen that is a fuel gas and oxygen that is an oxidant gas; an expander that is provided on a supply path of the fuel gas to the fuel cell stack, and at which, due to the fuel gas that is in a high-pressure state being supplied thereto, the fuel gas is expanded and the pressure thereof is reduced, and, due to the fuel gas being expanded and the pressure thereof being reduced, internal energy of the fuel gas is converted into mechanical energy; and a heating device that is provided further toward an upstream side of the supply path than the expander, and that heats the fuel gas.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: May 18, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masakatsu Tsubouchi
  • Patent number: 11011738
    Abstract: Provided is a method for producing a negative electrode by using a negative electrode active material and ceramic particles, the method ensuring satisfactory coatability of the paste and high peel strength and hardness of the obtained negative electrode active material layer. The method for producing a negative electrode disclosed herein includes a step of coating a negative electrode paste including a negative electrode active material and ceramic particles on a negative electrode current collector; a step of drying the coated negative electrode paste to form a negative electrode active material layer; and a step of pressing the negative electrode active material layer. The ceramic particles have an aspect ratio of 1.5 or more and 20 or less. The ceramic particles have a short side length of ? or less of an average particle diameter of the negative electrode active material.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: May 18, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhisa Takeda, Yuji Yokoyama, Keisuke Ohara
  • Patent number: 11011751
    Abstract: A compound having a layered structure that is used for a positive electrode active material for a lithium ion secondary battery achieves both a high energy density and a high cyclability. The positive electrode active material for a lithium ion secondary battery contains a compound having a layered structure belonging to a space group R-3m, in which the compound having a layered structure is represented by a compositional formula: Li1+aM1O2+? wherein M1 represents a metal element or metal elements other than Li, and contains at least Ni, ?0.03?a?0.10, and ?0.1<?<0.1, a proportion of Ni in M1 is larger than 70 atom %, and a site occupancy of a transition metal or transition metals at a 3a site obtained by structural analysis by a Rietveld method is less than 2%, and a content of residual lithium hydroxide in the positive electrode active material is 1 mass % or less.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: May 18, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Akira Gunji, Tatsuya Toyama, Shin Takahashi, Takashi Nakabayashi, Shuichi Takano, Xiaoliang Feng, Sho Furutsuki, Hisato Tokoro
  • Patent number: 11011774
    Abstract: There is provided a lithium ion secondary battery having excellent cycle characteristics at a high temperature and comprising lithium nickel composite oxides, in which the Ni content is high, in a positive electrode. The present invention relates to a lithium ion secondary battery having a positive electrode, a negative electrode and an electrolyte solution, wherein the positive electrode comprises a lithium nickel complex oxide denoted by the general formula, LiNixCoyMnzO2, wherein x, y, and z are respectively 0.75?x?0.85, 0.05?y?0.15, and 0.10?z?0.20.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: May 18, 2021
    Assignee: NEC CORPORATION
    Inventor: Takeshi Azami
  • Patent number: 11005138
    Abstract: A battery module includes a plurality of single cells, a battery chamber, an exhaust chamber, a partition wall, a smoke exhaust cover and a seal member. The exhaust chamber is provided adjacently to the battery chamber. Gas released from the single cells flows through the exhaust chamber. The exhaust chamber has one or more exhaust holes configured to release the gas to an outside. The partition wall isolates the exhaust chamber and the battery chamber from each other. The smoke exhaust cover is arranged so as to lace the partition wall. The exhaust chamber is surrounded by the partition wall, the smoke exhaust cover and the seal member. The smoke exhaust cover has a protective protrusion at a location between the seal member and the exhaust valves adjacent to the seal member. The protective protrusion is configured upright from the smoke exhaust cover toward the partition wall.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: May 11, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Satoshi Morioka
  • Patent number: 11005145
    Abstract: This disclosure relates to safety plugs for a battery of an electrified vehicle. An example battery includes a first battery module adjacent a second battery module, with each battery module having a respective housing. Further, the first battery module includes a first electrical contact and the second battery module includes a second electrical contact configured to electrically connect to the first electrical contact in a normal operating condition. The first and second electrical contacts are biased away from one another in a first direction, and the first and second electrical contacts are held together by a positive locking arrangement in the normal operating condition. Additionally, the first and second electrical contacts are configured to move out of contact with one another upon relative movement of the first and second battery modules in a second direction transverse to the first direction.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: May 11, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Marius Sawatzki, Daniel Meckenstock, Joergen Hilmann
  • Patent number: 10998535
    Abstract: A lithium-iron disulfide battery with improved high temperature performance is disclosed. The separator characteristics are deliberately selected to be compatible with the electrolyte at the intended temperature. Additional or alternative modifications can be made in the form of a scaffold or laminated structure. A preferred polymer for such separators is polyimide.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: May 4, 2021
    Assignee: Energizer Brands, LLC
    Inventors: Mark A. Schubert, Matthew T. Wendling, Weiwei Huang
  • Patent number: 10991947
    Abstract: A battery according to one aspect of the present disclosure includes a first electrode layer, a first counter electrode layer being a counter electrode of the first electrode layer, a first solid electrolyte layer located between the first electrode layer and the first counter electrode layer, and a first heat-conducting layer including a first region containing a heat-conducting material. The first region is located between the first electrode layer and the first solid electrolyte layer.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: April 27, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Izuru Sasaki
  • Patent number: 10978708
    Abstract: The invention relates to doped nickelate-containing compounds comprising AaM1VM2WM3XM4yM5ZO2-c wherein A comprises either sodium or a mixed alkali metal in which sodium is the major constituent; M1 is nickel in oxidation state greater than 0 to less than or equal to 4+, M2 comprises a metal in oxidation state greater than 0 to less than or equal to 4+, M3 comprises a metal in oxidation state 2+, M4 comprises a metal in oxidation state greater than 0 to less than or equal to 4+, and M5 comprises a metal in oxidation state 3+ wherein 0?a<1, v>0, at least one of w and y is >0 x?0, z?0 wherein c is determined by a range selected from 0<c?0.1 and wherein (a, v, w, x, y, z and c) are chosen to maintain electroneutrality.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: April 13, 2021
    Assignee: FARADION LIMITED
    Inventors: Jeremy Barker, Richard Heap
  • Patent number: 10978725
    Abstract: A control valve for controlling the exhausting of a purge gas from a fuel cell assembly, comprising a valve body having a valve member therein moveable between a first position and a second position, an inlet port for receiving a purge gas from the fuel cell assembly and an outlet port for providing an outlet for the purge gas, the valve member configured to, in the first position, prevent purge gas from flowing between the inlet port and the outlet port and, in the second position, allow the flow of purge gas between the inlet port and the outlet port, the valve body including a drain port adapted and arranged in the valve body to allow liquid to drain out of the valve body, the drain port configured to close when the valve member is in the second position.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: April 13, 2021
    Assignee: Intelligent Energy Limited
    Inventors: Gareth Coates, Karl Blackmore, Ralph Clague
  • Patent number: 10978721
    Abstract: A battery separator includes a polyolefin microporous membrane and a porous layer placed on at least one surface of the polyolefin microporous membrane. The polyolefin microporous membrane has a variation range of an F25 value in a longitudinal direction of 1 MPa or less. The F25 value indicates a value obtained by dividing a load value measured at 25% elongation of a specimen with use of a tensile tester by a cross-sectional area of the specimen. The porous layer contains a fluorine-based resin and an inorganic particle and has an average thickness T(ave) of 1 to 5 ?m.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: April 13, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Naoki Mizuno, Masami Sugata
  • Patent number: 10978750
    Abstract: Disclosed is a battery module comprising at least one battery cell and a cell monitoring unit which is connected in an electrically conducting manner to a flexible circuit board by at least one bonding wire and/or at least one bonding strip.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: April 13, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Emilia Schwindt, Carsten Mueller, Stefan Baumann, Andreas Ruehle