Patents by Inventor Masahiro Ohta

Masahiro Ohta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240063449
    Abstract: Provided is a battery module having a high energy density and exhibiting suppressed electrode displacement or peeling during vibration. In the present invention, a residual space in a battery cell, which is necessary for the lithium ion secondary batteries employing the liquid electrolyte is eliminated, and additionally a module component is disposed in a portion that would provide the residual space.
    Type: Application
    Filed: October 5, 2023
    Publication date: February 22, 2024
    Inventors: Takuya TANIUCHI, Masahiro OHTA
  • Patent number: 11881587
    Abstract: A pouch cell includes: a charging and discharging element; a current collecting tab lead configured to be thinner than the charging and discharging element and drawn out of the charging and discharging element to an outside; an exterior film configured to wrap the charging and discharging element in a state in which the current collecting tab lead is drawn out to an outside; a clamping part configured to clamp the current collecting tab lead from the exterior film by front and back surfaces in a thickness direction; and an airtightness maintaining member mounted to cover an end portion of the clamping part, wherein the airtightness maintaining member is separated from the exterior film, has a slit through which the current collecting tab lead is drawn out to the outside and has a bent part which covers an end portion of the clamping part, and a dimension of the bent part in the thickness direction of the clamping part is larger than a width dimension of the slit.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: January 23, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masahiro Ohta, Takuya Taniuchi
  • Patent number: 11860233
    Abstract: The battery unit includes a storage configured to store (A1) and (A2) below, and a battery state estimator. (A1): a table map OCV vs. SOC characteristics. (A2): HF vs. SOC initial characteristics. The battery state estimator estimates, based on (A1), a start SOC corresponding to a detected OCV at a start of charge; measures HF vs. SOC present characteristics and detects a peak of differential characteristics of the measured HF vs. SOC present characteristics during the charge; determines a SOC at the detected peak as a SOC(HF) based on (A2); calculates a charge capacity from the start of the charge to detection of the peak; calculates a SOC(OCV) based on the calculated charge capacity and the start SOC; and in a case where the SOC(OCV) deviates with respect to the SOC(HF) by an amount of deviation equal to or greater than a predetermined value, corrects (A1).
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: January 2, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuki Chiba, Masahiro Ohta
  • Patent number: 11862820
    Abstract: To provide a solid-state battery capable of achieving high capacity. A solid-state battery including a multilayer body including a stack of a plurality of electrode layers including positive electrode layers and negative electrode layers and solid electrolyte layers each disposed between the electrode layers, the multilayer body having a columnar shape; and the solid-state battery including a positive electrode terminal and a negative electrode terminal disposed at both end portions of the multilayer body; a positive electrode tab electrically connected to the positive electrode layer and the positive electrode terminal; and a negative electrode tab electrically connected to the negative electrode layer and the negative electrode terminal, wherein the positive electrode tab and the negative electrode tab are spirally wound on an outer peripheral surface of the multilayer body.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: January 2, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Taniuchi, Masahiro Ohta, Toshiyuki Ariga
  • Patent number: 11824157
    Abstract: To provide an electrical storage device in which a positive electrode material and a negative electrode material are each impregnated with a different type of electrolytic solution and a method for making the same. An electrical storage device (1) includes a negative electrode (2) including an organic electrolytic solution (21), a positive electrode (3) including an aqueous electrolytic solution (31), and a solid electrolyte (4) disposed between the negative electrode (2) and the positive electrode (3). The negative electrode (2) is entirely sealed. The electrical storage device (1) includes a sealing member (5), which is provided at the periphery of the negative electrode (2) and seals the negative electrode (2). The solid electrolytes (4) form a pair including a sealing material and together with the sealing member (5) seal the negative electrode (2) so that the negative electrode (2) is disposed between the solid electrolytes (4).
    Type: Grant
    Filed: March 14, 2021
    Date of Patent: November 21, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Wataru Shimizu, Masahiro Ohta
  • Publication number: 20230347710
    Abstract: This air conditioning device for a vehicle comprises: a refrigeration cycle having a compressor, a condenser, an expansion valve, and an evaporator through which refrigerant sequentially flows; a high-temperature heat medium circuit in which a high-temperature heat medium that has been heat-exchanged with the refrigerant in the condenser circulates; a low-temperature heat medium circuit in which a low-temperature heat medium that has been heat-exchanged with the refrigerant in the evaporator circulates; a connection line for connecting the high-temperature heat medium circuit and the low-temperature heat medium circuit; a plurality of heat exchangers outside the vehicle that allow introduction of the heat medium; and a switching unit capable of switching modes for each of the plurality of heat exchangers outside the vehicle, among a mode for connecting to the high-temperature heat medium circuit, a mode for connecting to the low-temperature heat medium circuit, and a mode for not connecting to either of the h
    Type: Application
    Filed: February 1, 2021
    Publication date: November 2, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Takayuki KOBAYASHI, Hirotaka TANABE, Tomoki HASE, Masahiro OHTA, Hideaki TATENOI, Koji NAKADO
  • Patent number: 11804618
    Abstract: To provide a solid-state battery in which the capacity and voltage can be optionally adjusted in a single battery and the installation space for the battery can be reduced. A solid-state battery includes a plurality of electrode layers, and a solid electrolyte layer disposed between the electrode layers. The electrode layers includes positive electrode portion formed by filling a current collector including a metal porous body with a positive electrode material mixture, negative electrode portion formed by filling a current collector including a metal porous body with a negative electrode material mixture, and an isolation portion formed between the positive electrode portion and the negative electrode portion. Between the plurality of electrode layers disposed adjacent to each other, the positive electrode portion and the negative electrode portion are disposed so as to face each other, and the isolation portions are disposed so as to face each other.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: October 31, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Taniuchi, Masahiro Ohta, Toshiyuki Ariga
  • Patent number: 11777163
    Abstract: To reduce influence of external force on a current collection tab lead and a current collection tab in a laminated cell type battery. A single film of an exterior body contacts and covers a top surface, a bottom surface, and two side surfaces of a battery perpendicular to an end surface of the battery from which a current collection tab and a current collection tab lead are provided to extend, covers the end surface of the battery from which the current collection tab and the current collection tab lead protrude, and is folded in from both short sides of the end surface such that triangular pyramid-shaped spaces are formed on both sides. A reinforcement member is arranged in and joined to each triangular pyramid-shaped space.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: October 3, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Taniuchi, Masahiro Ohta, Toshiyuki Ariga
  • Publication number: 20230299329
    Abstract: To provide a solid-state battery capable of applying an initial load that results in sufficient surface pressure to a battery cell, and a method for making the solid-state battery. A pressing part is provided in the solid-state battery case and the force of the spring is utilized, and a gas vent port is provided to replace gas or perform depressurization. Specifically, a solid-state battery including a solid-state battery cell and a battery case that houses the solid-state battery cell, is provided. A pressing part that applies surface pressure to the solid-state battery cell is formed on a surface constituting the battery case that is substantially perpendicular to the laminating direction of a laminate constituting the solid-state battery cell, and at least one gas vent port is formed in the battery case.
    Type: Application
    Filed: May 23, 2023
    Publication date: September 21, 2023
    Inventors: Takuya TANIUCHI, Masahiro OHTA
  • Publication number: 20230268622
    Abstract: Provided is a battery cell that can effectively overcome problems caused by known battery cells having an outer jacket constituted by one folded film. A battery cell includes a battery, and an outer jacket accommodating the battery. At least one end face of the battery is connected to a current-collecting tab lead. The outer jacket is constituted by one film which is folded along another end face of the battery different from the end face connected to the current-collecting tab lead, and end portions of which are joined to each other such that the current-collecting tab lead is sandwiched between the end portions. The outer jacket has a hole at a position adjacent to the end face connected to the current-collecting tab lead, the hole being blocked.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 24, 2023
    Inventors: Takuya TANIUCHI, Masahiro OHTA
  • Patent number: 11735799
    Abstract: To provide a lithium ion secondary battery in which it is possible to prevent an electrode end part from cracking, when current collector tabs of the lithium ion secondary battery are bound to each other and joined to a lead terminal. A lithium ion secondary battery includes a lithium ion secondary battery main body and a lead terminal. The lithium ion secondary battery main body has a laminated body repeatedly disposed with positive electrodes respectively including positive electrode current collectors, solid electrolytes, and negative electrodes respectively including negative electrode current collectors. The current collectors respectively extend from an end face of the laminated body in an identical direction to constitute a plurality of current collector tabs. The lead terminal is electrically coupled to the plurality of current collector tabs. The current collector tabs and the lead terminal are coupled to each other via an electrically-conductive tab guiding part.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: August 22, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Taniuchi, Masahiro Ohta, Toshiyuki Ariga
  • Patent number: 11721803
    Abstract: The present invention is a solid-state battery formed of a plurality of repeatedly stacked solid-state battery cells each including a positive electrode layer, a negative electrode layer, a solid-state electrolyte layer, and a pair of current collector layers sandwiching said layers. One surface of each of the current collector layers is in contact with the positive electrode layer or the negative electrode layer. The other surface of the current collector layer is in contact with the current collector layer of the neighboring solid-state battery cell. The coefficient of friction on the other surface of the current collector layer is higher than the coefficient of friction on the one surface of the current collector layer. This can provide a solid-state battery that does not suffer displacement or rotation when stacking.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: August 8, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Taniuchi, Masahiro Ohta
  • Patent number: 11715855
    Abstract: Provided is a battery module including a plurality of battery cells stacked on one another and being capable of effectively preventing damage to the battery cells despite such a configuration. A battery module 1 includes a plurality of battery cells 10 stacked on one another and a battery cell support 2. The battery cells 10 each include a battery 11 and an exterior casing 12 accommodating the battery 11. The battery cell support 2 is disposed between the plurality of battery cells 10. The battery module preferably further includes a fixation film 6 wound around the plurality of battery cells in a stacking direction and fixing the plurality of battery cells.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: August 1, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Taniuchi, Masahiro Ohta
  • Publication number: 20230158859
    Abstract: A vehicle air conditioner includes: a refrigeration cycle in which a refrigerant circulates; a high-temperature cycle in which a first heat medium in liquid form heated by the refrigeration cycle circulates; a low-temperature cycle in which a second heat medium in liquid form cooled by the refrigeration cycle circulates; and a seat that is provided in a vehicle interior and has a warm flow passage and a cold flow passage disposed close to each other. The warm flow passage is provided on the route of the high-temperature cycle, and the cold flow passage is provided on the route of the low-temperature cycle.
    Type: Application
    Filed: February 22, 2021
    Publication date: May 25, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Hirotaka TANABE, Takayuki KOBAYASHI, Hideaki TATENOI, Tomoki HASE, Masahiro OHTA
  • Patent number: 11652242
    Abstract: To provide a solid-state battery allowing the yield of the solid-state battery to be improved and further the durability of the solid-state battery to be improved. A solid-state battery (10) includes a positive electrode layer (3) containing a positive electrode active material, a negative electrode layer (2) containing a negative electrode active material, and a solid electrolyte (1) interposed between the positive electrode layer (3) and the negative electrode layer (2). The solid electrolyte (1) includes a positive electrode-side electrode layer (1a) in contact with the positive electrode layer (3) and a negative electrode-side electrolyte layer (1b) in contact with the negative electrode layer (2). In the solid electrolyte (1), an area SSE2 of the positive electrode side of the positive electrode-side electrolyte layer (1a) differs from an area SSE1 off the negative electrode side of the negative electrode-side electrolyte layer (1b).
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: May 16, 2023
    Assignee: Honda Motor Co., LTD.
    Inventors: Masahiro Ohta, Takuya Taniuchi
  • Publication number: 20230091279
    Abstract: The battery unit includes a storage configured to store (A1) and (A2) below, and a battery state estimator. (A1) : a table map OCV vs. SOC characteristics. (A2) : HF vs. SOC initial characteristics. The battery state estimator estimates, based on (A1), a start SOC corresponding to a detected OCV at a start of charge; measures HF vs. SOC present characteristics and detects a peak of differential characteristics of the measured HF vs. SOC present characteristics during the charge; determines a SOC at the detected peak as a SOC(HF) based on (A2); calculates a charge capacity from the start of the charge to detection of SOC the peak; calculates a SOC(OCV) based on the calculated charge capacity and the start SOC; and in a case where the SOC(OCV) deviates with respect to the SOC(HF) by an amount of deviation equal to or greater than a predetermined value, corrects (A1).
    Type: Application
    Filed: August 8, 2022
    Publication date: March 23, 2023
    Inventors: Kazuki CHIBA, Masahiro OHTA
  • Publication number: 20230090747
    Abstract: The battery unit includes: a battery module including a battery cell; a battery heat flow detector configured to detect a heat flow of the battery cell; a storage configured to store heat flow HF vs. state of charge SOC initial characteristics of the battery cell; and a battery state estimator configured to estimate a state of health SOH of the battery cell. The battery state estimator measures, during charge of the battery cell, HF vs. SOC present characteristics of the battery cell, based on the detected heat flow of the battery cell, and estimates a state of health SOH of the battery cell, from a ratio between a length mAh of a line segment between peaks of differential characteristics of the measured HF vs. SOC present characteristics and a length mAh of a line segment between peaks of differential characteristics of the stored HF vs. SOC initial characteristics.
    Type: Application
    Filed: August 10, 2022
    Publication date: March 23, 2023
    Inventors: Kazuki CHIBA, Masahiro OHTA
  • Patent number: 11600826
    Abstract: An all-solid-state battery positive electrode 20 includes a positive electrode current collector 21 and a positive electrode active material layer 22 laminated on the positive electrode current collector 21. The positive electrode active material layer 22 includes an inclined portion 50 (a first inclined portion 50A) provided on an outer circumference thereof.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: March 7, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masahiro Ohta, Wataru Shimizu
  • Patent number: 11600844
    Abstract: The present invention provides a solid-state battery cell and a solid-state battery module including the same. The solid-state battery cell includes: a laminate including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer present between the positive electrode layer and the negative electrode layer; a positive electrode tab connected to the positive electrode layer; a negative electrode tab connected to the negative electrode layer; and a pair of conductive clamping plates clamping the laminate from both sides in a laminating direction of the laminate. One of the pair of clamping plates is electrically connected to the positive electrode tab, and the other clamping plate is electrically connected to the negative electrode tab.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: March 7, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Taniuchi, Masahiro Ohta
  • Patent number: 11545699
    Abstract: What is provided is a solid state battery and a solid state battery manufacturing method capable of more reliably preventing short-circuiting. A solid state battery includes: a first electrode piece in which a first electrode active material layer is formed on a first current collector layer; a second electrode piece in which a second electrode active material layer is formed on a second current collector layer; and a bag-shaped solid electrolyte layer which accommodates the first electrode piece, wherein the first electrode piece accommodated in the bag-shaped solid electrolyte layer and the second electrode piece are laminated so as to overlap each other in a plan view so that the first electrode active material layer and the second electrode active material layer are disposed so as to face each other with the solid electrolyte layer interposed therebetween.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: January 3, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masahiro Ohta, Wataru Shimizu, Toru Sukigara