Patents Examined by Grace Ann Kenlaw
  • Patent number: 12034148
    Abstract: A negative electrode active material for a lithium secondary battery, the negative electrode active material including, based on 100 parts by weight of the total negative electrode active material, 5 parts by weight to 20 parts by weight of a first carbon-based particle, 55 parts by weight to 90 parts by weight of a second carbon-based particle, and 1 part by weight to 40 parts by weight of a silicon-based particle, wherein the specific surface area of the first carbon-based particle is 1.5 m2/g to 4.5 m2/g, the specific surface area of the second carbon-based particle is 0.4 m2/g to 1.5 m2/g, and the specific surface area of the first carbon-based particle is greater than the specific surface area of the second carbon-based particle, and capable of solving the problem of lifespan deterioration which may be caused by the use of a silicon-based particle as a negative electrode active material.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: July 9, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Su Min Lee, Yong Ju Lee, Eun Kyung Kim, Rae Hwan Jo, Dong Hyuk Kim, Se Mi Park
  • Patent number: 12027693
    Abstract: Disclosed is a production method for a zinc electrode with in situ formation of calcium zincate crystals. The method includes notably the steps of preparation of a mixture, growth of crystals, slowing of the growth and production of the electrode.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: July 2, 2024
    Assignee: ELECTRICITE DE FRANCE
    Inventors: Philippe Stevens, Gwénaëlle Toussaint
  • Patent number: 12021205
    Abstract: The present invention relates to a method of reusing a positive electrode material, and more particularly, the method includes: inputting a positive electrode for a lithium secondary battery comprising a current collector, and a positive electrode active material layer formed on the current collector and including a first positive electrode active material, a first binder and a first conducting agent, into a solvent; separating at least a portion of the positive electrode active material layer from the current collector; adding second binder powder to the solvent and performing primary mixing a resulting mixture; and preparing a positive electrode material slurry by adding a second positive electrode active material and a second conducting agent to the solvent and performing secondary mixing a resulting mixture.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: June 25, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Joo Yul Baek, Woo Ha Kim, In Seong Kim, Jun Muk Lim, Sang Hoon Choy
  • Patent number: 12009515
    Abstract: A negative electrode active material for a lithium secondary battery, which includes a silicon-based particle represented by M-SiOx, wherein M is Li, Mg, Ca, Al, or Ti, and 0?x<2, wherein the M-SiOx includes an amorphous phase at 20 wt % to 70 wt % based upon a total weight of the M-SiOx, thereby exhibiting excellent initial efficiency and lifespan characteristics, and a preparation method thereof.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: June 11, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Yong Ju Lee, Rae Hwan Jo, Su Min Lee, Dong Hyuk Kim, Se Mi Park
  • Patent number: 11978919
    Abstract: A battery safety vent assembly for a battery casing with an upper surrounding clamp-like shape is disclosed. The assembly has a positive cap, a safety vent disk extending under a disk element of the positive cap, a gasket insulator snugly fitting into the clamp-like shape of the battery casing and providing support to the positive cap, the safety vent disk and a circuit interrupt device embedded in an underside recess area of the gasket insulator. The circuit interrupt device is coupled to a button downwardly projecting from the safety vent disk. Gas release passages, openings and interfaces between parts of the assembly are arranged so that when gas pressure inside the battery casing exceeds a predetermined threshold limit of pressure, weak lines in the safety vent disk allow gas to safely exit the battery casing.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: May 7, 2024
    Assignee: HYDRO-QUÉBEC
    Inventors: Pu Wang, Mustapha El Mazouzi, Karim Zaghib
  • Patent number: 11973242
    Abstract: A degassing apparatus for a secondary battery, and a degassing method using same, is provided. The degassing apparatus includes a drive motor and a jig arm configured to pressurize a first surface of a gas pocket of a battery cell and a second surface opposite the first surface by controlling a separation distance by the operation of a driving motor. The degassing apparatus is capable of performing an effective degassing and sealing process for the battery cell without positional movement of the battery cell during cell activation or after cell activation.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: April 30, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Sang Jih Kim, Joon Sung Bae, Beom Koon Lee, Dong Hun Bae, Eui Kyung Lee, Suk Hyun Hong
  • Patent number: 11973175
    Abstract: Disclosed is a method of manufacturing a pouch-shaped battery cell, the method including (a) forming an electrode assembly receiving portion in a laminate sheet to manufacture a preliminary battery case, (b) receiving an electrode assembly in the electrode assembly receiving portion and sealing other outer peripheries of the preliminary battery case excluding a first side outer periphery of the preliminary battery case, through which gas is discharged, (c) disposing a fixing jig at each of opposite end corner portions of a first side outer periphery of the electrode assembly receiving portion, (d) performing an activation process and a degassing process, (e) resealing the first side outer periphery of the electrode assembly receiving portion, and removing an end of the preliminary battery case, wherein step (d) to step (f) are performed in the state in which the corner portion is in tight contact with the inner surface of the fixing jig, which is technology capable of preventing the preliminary battery case f
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: April 30, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventor: Jin Seop Kwak
  • Patent number: 11962009
    Abstract: A high-performance electrochemically active sodium molten salt catholyte enables a dramatic reduction in molten sodium battery operating temperature from near 300° C. to less than 120° C. As an example, stable electrochemical cycling was demonstrated in a high voltage (3.65 V) sodium battery comprising a sodium iodide-gallium chloride (NaI—GaCl3) molten salt catholyte for over 8 months at 110° C. The combination of high voltage, stable cycling behavior, and practical current densities supported by a molten catholyte enables a new generation of transformative high performance, low temperature molten sodium batteries.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: April 16, 2024
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Erik D. Spoerke, Stephen J. Percival, Martha M. Gross, Rose Y. Lee, Leo J. Small
  • Patent number: 11870053
    Abstract: A secondary-battery negative electrode includes: a negative electrode collector; and a negative electrode active material layer provided on a surface of the negative electrode collector, and the negative electrode active material layer includes active material particles and amorphous carbon which covers at least parts of surfaces of the active material particles. At least a part of a surface of the amorphous carbon is covered with a film having a lithium ion permeability, the film contains an element M, and the element M is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: January 9, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takuya Sadakane, Hiroshi Kawada, Atsushi Fukui
  • Patent number: 11817553
    Abstract: A gel polymer electrolyte (GPE) composition and a method of forming the same are provided. The GPE includes a polymer network and an electrolyte composition comprising a deep eutectic solvent (DES) having a eutectic point of less than or equal to 25° C. An electrochemical cell including a GPE and a method of forming the same are also provided.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: November 14, 2023
    Assignee: The Johns Hopkins University
    Inventors: Konstantinos Gerasopoulos, Christopher M. Hoffman, Jr., Adam W. Freeman, Matthew W. Logan, Spencer A. Langevin
  • Patent number: 11817600
    Abstract: A method for manufacturing a secondary battery is provided, the method including a first step of providing a top cap and a safety vent, a second step of bending an end portion of the safety vent upward, and a third step of inserting the top cap inside the safety vent. An outer diameter A of the top cap is greater than an inner diameter B of the safety vent between the second step and the third step. A secondary battery is also provided.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: November 14, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Ha Young Heo, Duk Hyun Ryu, Hyoung Kwon Kim
  • Patent number: 11811017
    Abstract: A battery unit and a battery module, where the battery unit includes an electrode assembly, including a first electrode and a second electrode, which have opposite polarities, each of the first electrode and the second electrode includes a coated portion and an uncoated portion, and the uncoated portion is located at an end part of a coated portion along the length direction of the electrode assembly and forms a tab; two terminals, arranged at the top of the electrode assembly; and two current collectors for electrically connecting the tabs on both sides of the electrode assembly with the terminals on the same side respectively. At least one end of at least one current collector along the width direction of the electrode assembly is a flat plate structure, and the tab covers the flat plate structure from the outer side after being bent.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: November 7, 2023
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Jie Zhang, Zhijun Guo, Peng Wang
  • Patent number: 11799121
    Abstract: A system for assembling a battery module includes a battery cell supply unit, a transfer unit, and a battery cell adhesion unit, where the battery cell supply unit is configured to stack a plurality of battery cells each being formed by packaging of a negative electrode plate having a negative electrode terminal, a positive electrode plate having a positive electrode terminal, and a separator interposed between the negative electrode plate and positive electrode plate, by an exterior member, the transfer unit is configured to adsorb and transfer the battery cell from the battery cell supply unit, and the battery cell adhesion unit is configured to apply an adhesive to an adhesion surface of the battery cell transferred by the transfer unit, and to conjoin the battery cells while stacking the battery cells in stacking device such that the adhesion surfaces of the battery cells face a preset direction.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: October 24, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Hyunjun Yoon
  • Patent number: 11764394
    Abstract: A battery cell includes an electrode assembly; a case comprising an accommodation portion accommodating the electrode assembly and a sealing portion formed on a periphery of the accommodation portion; and a fixing member disposed between the accommodation portion and the sealing portion to adhere each other; wherein the fixing member comprises a core layer, and an adhesive layer is stacked on both surfaces of the core layer.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: September 19, 2023
    Assignee: SK ON CO., LTD.
    Inventors: Jin-Go Kim, Dong-Ju Kim, Seung-Noh Lee
  • Patent number: 11742524
    Abstract: A positive electrode terminal is inserted into a current-collector through hole formed, in a positive electrode current collector and riveted in a spot-faced hole formed in the positive electrode current collector. A protrusion is formed on a bottom surface of the spot-faced hole so as to extend around the current-collector through hole, and a riveted portion of the positive electrode terminal covers the protrusion. The riveted portion of the positive electrode terminal is weld-connected to an edge of the spot-faced hole.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: August 29, 2023
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yohei Muroya, Hiroshi Takabayashi, Tomokazu Yamanaka
  • Patent number: 11641046
    Abstract: The present disclosure relates to a battery module, including two or more battery cells, each including an electrode terminal; a connecting member, wherein the electrode terminals of adjacent battery cells are connected by the connecting member; and a clamping-sampling member, including a wire connection portion for fixing a wire harness and a clamping portion, wherein one end of the clamping portion is connected with the wire connection portion and the other end of the clamping portion clamps the connecting member.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: May 2, 2023
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Xianchun Zhu, Hua Cao, Chong Wang, Mu Qian, Shixin Wu
  • Patent number: 11594745
    Abstract: Provided are an electrode catalyst layer, a membrane electrode assembly and a polymer electrolyte fuel cell, having sufficient drainage property and gas diffusibility with high power generation performance over a long term. An electrode catalyst layer (10) bonded to a surface of a polymer electrolyte membrane (11) includes at least a catalyst substance (12), a conductive carrier (13), a polymer electrolyte (14) and fibrous substances (15). The number of the fibrous substances (15) in which inclination ? of axes with respect to a surface of the electrode catalyst layer (10) bonded to the surface of the polymer electrolyte membrane (11) is 0°??<45°, among the fibrous substances (15), is greater than 50% of the total number of the fibrous substances (15) contained.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: February 28, 2023
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Madoka Ozawa
  • Patent number: 11594729
    Abstract: Provides is a cathode active material comprising particles each containing a lithium composite oxide, a coating layer containing an ammonium phosphate compound containing a metal other than lithium. The coating layer coats each of the particles. The metal other than lithium includes at least one selected from the group consisting of manganese, nickel, and cobalt.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: February 28, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Hirotetsu Suzuki
  • Patent number: 11581592
    Abstract: Disclosed herein is a battery case configured to receive an electrode assembly and an electrolytic solution therein, the electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, the battery case including a layer structure and a gas adsorption layer formed on the inner surface of the layer structure, the gas adsorption layer including a gas adsorption material layer configured to adsorb a reaction gas that may be generated within the battery case during abnormal functioning of the electrode assembly, and a blocking layer formed on an exposed surface of the gas adsorption material layer, the blocking layer configured to prevent the gas adsorption material layer from being exposed to an ambient gas during assembly of the battery case.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: February 14, 2023
    Inventors: Hee Seok Jeong, Eun Ju Lee, Hyun Min Kim, Jong Hwan Choi
  • Patent number: 11515558
    Abstract: Methods and systems are provided for a redox flow battery system. In one example, the redox flow battery is adapted with an additive included in a battery electrolyte and an anion exchange membrane separator dividing positive electrolyte from negative electrolyte. An overall system cost of the battery system may be reduced while a storage capacity, energy density and performance may be increased.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: November 29, 2022
    Assignee: ESS TECH, INC.
    Inventor: Yang Song