Patents by Inventor Naotake YOSHIDA

Naotake YOSHIDA 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).

  • Patent number: 12095063
    Abstract: A battery system incudes battery stack formed by stacking a plurality of battery cells and cooling plate thermally coupled to battery cell of battery stack. Heat insulating material is disposed between battery cells of battery stack, which are adjacent to each other, and heat insulating material insulates heat between battery cells adjacent to each other. In addition, cooling plate cools battery cell, is used in combination with an endothermic material having heat capacity to absorb thermal runaway energy of battery cell, and prevents induction of thermal runaway.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: September 17, 2024
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Naotake Yoshida, Tomoaki Ito, Takuya Egashira
  • Publication number: 20240304915
    Abstract: A battery pack includes: a first stack and a second stack each including a plurality of battery cells arranged side by side in a first direction; a case that accommodates the first stack and the second stack; a plurality of bus bars that electrically connect the plurality of battery cells; a first plate on which a first group of the plurality of bus bars is mounted; and a second plate on which a second group of the plurality of bus bars is mounted, the second plate being separated from the first plate, the second group being different from the first group, wherein each of the first plate and the second plate extends along a second direction orthogonal to the first direction so as to reach the second stack from the first stack, and the first plate and the second plate are arranged side by side along the first direction.
    Type: Application
    Filed: February 20, 2024
    Publication date: September 12, 2024
    Inventors: Naotake YOSHIDA, Satoru MATSUYAMA
  • Publication number: 20240304932
    Abstract: A battery pack includes a plurality of battery cells, a housing, and an electrical component. The plurality of battery cells are arranged in a first direction. The housing accommodates the plurality of battery cells. The electrical component is electrically connected to at least one of the plurality of battery cells. The housing includes a bottom portion and a side wall portion. The plurality of battery cells are mounted on the bottom portion. The side wall portion is provided to rise from the bottom portion, a hollow portion being provided in the side wall portion. At least a portion of the electrical component is embedded in the side wall portion.
    Type: Application
    Filed: February 15, 2024
    Publication date: September 12, 2024
    Inventors: Naotake YOSHIDA, Masaki FUKUDA
  • Patent number: 12087963
    Abstract: The battery module includes: battery stack including a plurality of batteries that are stacked, each of the plurality of batteries having valve portion; duct plate configured to cover a surface of battery stack on which the plurality of valve portions are disposed, duct plate having gas discharge duct that is connected to valve portions of the respective batteries, and temporarily stores a blown-off gas; cover plate placed on duct plate; and flow path portion defined by duct plate and cover plate, flow path portion extending from gas discharge duct in a first direction that intersects with stacking direction and allowing leaking of the gas in gas discharge duct to an outside of battery module. Cover plate has opening through which a midst portion of flow path portion is communicable with the outside of the battery module.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: September 10, 2024
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Naotake Yoshida, Takuya Egashira, Yusuke Fujii, Nao Takeda, Takuya Unehara
  • Publication number: 20240297390
    Abstract: A battery pack includes: a plurality of stacked battery cells; a first member having a longitudinal plate portion and a lateral plate portion, the longitudinal plate portion being in abutment with a battery cell in a stacking direction of the battery cells, reaction force in the stacking direction of the battery cells being applied to the longitudinal plate portion from the plurality of battery cells, the lateral plate portion protruding from the longitudinal plate portion in a direction of the reaction force; and a second member overlapping with the lateral plate portion in a thickness direction of the lateral plate portion; and a connection member that connects the lateral plate portion to the second member.
    Type: Application
    Filed: February 29, 2024
    Publication date: September 5, 2024
    Applicant: Prime Planet Energy & Solutions, Inc.
    Inventors: Naotake YOSHIDA, Yuya MOGI, Satoru MATSUYAMA, Masahiro IMAI
  • Publication number: 20240291096
    Abstract: A battery pack includes: a battery assembly including a plurality of battery cells arranged side by side in a first direction; a case provided with an inner space that accommodates the battery assembly and a wall surface that defines at least a portion of the inner space; and a sealing component that extends through the wall surface to reach the inner space, wherein the wall surface is provided with a recess recessed toward the inner space when viewed from an outer portion side of the case, and a through hole reaching the inner space is formed in a bottom portion of the recess and the sealing component seals the through hole.
    Type: Application
    Filed: February 15, 2024
    Publication date: August 29, 2024
    Inventors: Naotake YOSHIDA, Satoru MATSUYAMA
  • Patent number: 12068499
    Abstract: Battery module includes: battery stack including a plurality of batteries that are stacked, each of the plurality of batteries having valve portion; duct plate configured to cover a first surface of battery stack on which a plurality of valve portions are disposed, duct plate having gas discharge duct that temporarily stores a gas blown off from valve portions of respective batteries; cover plate placed on duct plate; flow path portion defined by duct plate and cover plate, flow path portion being connected to gas discharge duct through opening, flow path portion extending in a first direction that intersects with stacking direction of the batteries, flow path portion allowing leaking of the gas in gas discharge duct to an outside of battery module; and gas restricting wall portion disposed in gas discharge duct between valve portion and opening.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: August 20, 2024
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Naotake Yoshida, Takuya Egashira, Yusuke Fujii, Nao Takeda, Takuya Unehara
  • Patent number: 12040467
    Abstract: The power supply device includes a plurality of battery cells each having a square outer shape, a plurality of separators for insulating the adjacent battery cells, and a restraining member that assembles the plurality of battery cells and the plurality of separators. Each of separators has heat insulating properties. Further, each of separators is disposed between the plurality of battery cells. Further, each of separators includes contact portion that comes into contact with adjacent battery cell, and thin portion formed thinner than contact portion.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 16, 2024
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Nao Takeda, Naotake Yoshida, Kazuhiro Harazuka
  • Patent number: 11936061
    Abstract: Provided is power supply device configured for safe discharge to the outside of the power supply device even when gas at high temperature and under high pressure is discharged from a secondary battery cell, power supply device including: a plurality of secondary battery cells each having gas discharge valve for discharging internal gas; and cover part disposed on one surface of battery stack with the plurality of secondary battery cells stacked while covering gas discharge valve of each of the plurality of secondary battery cells. Cover part is provided inside with a gas guide path partitioned to discharge gas discharged from gas discharge valve to the outside of cover part, and the gas guide path includes one or more horizontal gas flow bending portions that bend at least a flow direction of some of the gas in plan view of cover part.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: March 19, 2024
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takuya Egashira, Naotake Yoshida
  • Patent number: 11916209
    Abstract: The power supply device includes a plurality of battery cells each having a rectangular outer shape, a plurality of separators configured to insulate adjacent battery cells, and a restraining member assembling the plurality of battery cells and the plurality of separators. Each of separators includes interposed plate disposed between adjacent battery cells, heat insulating member having a sheet-like shape and disposed between interposed plate and adjacent battery cells, peripheral wall protruding from interposed plate toward adjacent battery cells and defining a housing space housing adjacent battery cells, and a plurality of ribs provided inside peripheral wall. The plurality of ribs holds heat insulating member.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: February 27, 2024
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Nao Takeda, Naotake Yoshida, Kazuhiro Harazuka
  • Patent number: 11757144
    Abstract: A plurality of battery cells each having a prismatic shape, a fixing member that fixes the plurality of battery cells in a stacked state, and a thermal insulation sheet that is sandwiched between stacking surfaces of battery cells and thermally insulates the adjacent battery cells, wherein thermal insulation sheet is an inorganic fiber sheet in which inorganic fibers are aggregated in a three-dimensionally non-directional manner and fine voids are provided between the inorganic fibers.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 12, 2023
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masakazu Naito, Naotake Yoshida
  • Publication number: 20230282948
    Abstract: A bus-bar connection structure includes: a terminal portion having a first facing surface; a bus bar having a second facing surface that faces the first facing surface with a clearance being provided between the second facing surface and the first facing surface in a predetermined direction; and a weld portion that connects the terminal portion and the bus bar. The weld portion has: a first weld layer provided in the bus bar; a second weld layer provided in the terminal portion; and an intermediate weld layer disposed in the clearance, the intermediate weld layer connecting the first weld layer and the second weld layer. The weld portion has a cross sectional shape in which a minimum width of the intermediate weld layer in a direction orthogonal to the predetermined direction is larger than a minimum width of the first weld layer in the direction orthogonal to the predetermined direction.
    Type: Application
    Filed: March 5, 2023
    Publication date: September 7, 2023
    Inventors: Naotake YOSHIDA, Takashi INAMURA
  • Publication number: 20230275284
    Abstract: A battery pack includes: a plurality of battery cells; a case member including an inner space in which the plurality of battery cells are accommodated, a cooling plate provided with a coolant path through which a coolant flows, and a side surface portion defining the inner space together with the cooling plate; an entrance portion for the coolant into the coolant path of the cooling plate; an exit portion for the coolant from the coolant path of the cooling plate; and a coolant tube connected to the entrance portion and the exit portion. The cooling plate includes a first portion facing the inner space and a second portion protruding on an outer side with respect to the side surface portion of the case member. The entrance portion and the exit portion for the coolant are connected to the second portion.
    Type: Application
    Filed: February 24, 2023
    Publication date: August 31, 2023
    Inventors: Naotake YOSHIDA, Satoru MATSUYAMA
  • Publication number: 20230253684
    Abstract: A battery pack includes: a first battery assembly including a plurality of first battery cells arranged in a first direction; and a second battery assembly including a plurality of second battery cells arranged in the first direction, the second battery assembly being arranged beside the first battery assembly along a second direction orthogonal to the first direction. Each of the plurality of first battery cells and the plurality of second battery cells includes an electrode terminal. The battery pack further includes a bus bar joined to an electrode terminal of a first battery cell located at a certain portion of the first battery assembly in the first direction and an electrode terminal of a second battery cell.
    Type: Application
    Filed: December 27, 2022
    Publication date: August 10, 2023
    Inventors: Naotake YOSHIDA, Satoru MATSUYAMA
  • Publication number: 20230246265
    Abstract: A battery pack includes: a plurality of stacked battery cells; and a case body that has a first bottom portion and a first side portion and that accommodates the plurality of battery cells, the first bottom portion being a portion on which the plurality of battery cells are placed, the first side portion rising from the first bottom portion. A coolant path through which coolant flows is provided inside the first side portion.
    Type: Application
    Filed: December 28, 2022
    Publication date: August 3, 2023
    Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Satoru MATSUYAMA, Ryohei HONDA, Naotake YOSHIDA
  • Publication number: 20230246278
    Abstract: A battery pack includes: a plurality of battery cells; an electronic component unit including an electronic component and a housing that accommodates the electronic component; and a case member that accommodates the plurality of battery cells and the electronic component unit. The housing of the electronic component unit has a bottom surface. The case member has a floor surface that supports the bottom surface of the housing, and the floor surface of the case member includes a first floor surface portion extending along a first plane and a second floor surface portion extending along a second plane obliquely intersecting the first plane.
    Type: Application
    Filed: December 28, 2022
    Publication date: August 3, 2023
    Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Naotake YOSHIDA, Satoru MATSUYAMA, Ryohei HONDA
  • Patent number: 11677124
    Abstract: A battery system includes a battery block having a plurality of square battery cells (1) stacked in one direction, parallel connection bus bars (5X), insulating plate (7), and lid plate (8) fixed to insulating plate (7). Each square battery cell (1) has a discharge port provided with discharge valve (14) and a sealing plate provided with positive and negative electrode terminals via an insulating material. Parallel connection bus bars (5X) are connected to the electrode terminals to connect some or all of square battery cells (1) in parallel. Insulating plate (7) is disposed on the surfaces of sealing plates of the plurality of square battery cells (1) and includes passing portions having openings provided at positions corresponding to the discharge ports to pass the exhaust gas ejected from the discharge ports and pressing portions (22) disposed between parallel-connection bus bars (5X) and the sealing plates. Lid plate (8) faces discharge ports facing the openings of the passing portions.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: June 13, 2023
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takuya Egashira, Naotake Yoshida, Daisuke Yamane
  • Publication number: 20230140244
    Abstract: Power supply device includes: battery stack in which a plurality of battery cells each having electrode terminal formed on a top surface thereof are stacked; a pair of end plates respectively covering end surfaces in a stacking direction of battery stack; fastening member that fastens the pair of end plates to each other; and insulating member interposed between a side surface of battery stack and fastening member. Insulating member has groove extending in a stacking direction of battery stack on a surface facing battery stack.
    Type: Application
    Filed: December 22, 2020
    Publication date: May 4, 2023
    Inventors: NAOTAKE YOSHIDA, ERI KOHIRA, KAZUHIRO HARAZUKA
  • Patent number: 11563255
    Abstract: A power supply device includes a plurality of rectangular battery cells stacked in the thickness direction, and a plurality of separators interposed between adjacent battery cells. The separator includes an insulating separator frame that forms a defined space surrounded in a frame shape, and a separator core that is inserted into the defined space surrounded by the separator frame and is disposed between the adjacent battery cells.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: January 24, 2023
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Naotake Yoshida
  • Patent number: 11515607
    Abstract: There is provided a battery system including parallel-connected bus bars each connecting the plurality of prismatic battery cells in parallel, and a safety mechanism configured to be capable of interrupting a current path of prismatic battery cells connected in parallel by the parallel-connected bus bars, where the sealing plate of one of the prismatic battery cells convexly deforms due to a rise in an internal pressure of this prismatic battery cell when an abnormality occurs, the sealing plate that has convexly deformed comes into contact with the parallel-connected bus bars to form external short circuitry between the electrode terminals that are positive and negative of one prismatic battery cell connected in parallel to the prismatic battery cell with the abnormality, and external short circuitry activates the safety mechanism that interrupts a current flowing into the prismatic battery cell with the abnormality.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: November 29, 2022
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Naotake Yoshida, Kazuhiro Harazuka, Nobuo Iwatsuki, Shinji Ota