Patents Assigned to PRIMEARTH EV ENERGY CO., LTD.
  • Patent number: 11909249
    Abstract: A power feeding system of the present disclosure includes a control unit. In a case where a magnitude of supply destination power is smaller than an upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power based on power output from the power source, and to charge the storage battery with power which is a difference obtained by subtracting the supply destination power from the upper limit value of the power supply capability of the power source. In a case where the magnitude of the supply destination power is more than or equal to the upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power by both the power source and the storage battery.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: February 20, 2024
    Assignee: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Daisuke Koba, Yuji Torii, Yuji Sakayanagi, Yasushi Matsukawa
  • Publication number: 20240055581
    Abstract: A positive plate for a nonaqueous rechargeable battery includes a positive electrode substrate and a positive electrode mixture layer that contains at least a positive electrode active material. Particles of the positive electrode active material having a specific surface area of a range of 1.5 m2/g to 3.0 m2/g prior to manufacture of the positive plate for the nonaqueous rechargeable battery are used. A difference between a specific surface area of the positive plate for the nonaqueous rechargeable battery after manufacturing the positive plate for the nonaqueous rechargeable battery and the specific surface area of the particles of the positive electrode active material prior to manufacture of the positive plate for the nonaqueous rechargeable battery is in a range of 0.66 m2/g to 1.8 m2/g.
    Type: Application
    Filed: August 7, 2023
    Publication date: February 15, 2024
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventor: Ryotaro SAKAI
  • Publication number: 20240055729
    Abstract: A non-aqueous electrolyte rechargeable battery includes an electrode body, a negative electrode current collector, and a positive electrode current collector. The electrode body includes a stack of a negative electrode sheet, a positive electrode sheet, and a separator. The negative electrode sheet includes a negative electrode base, a negative electrode mixture layer, and a negative electrode connecting portion. The positive electrode sheet includes a positive electrode base, a positive electrode mixture layer, a positive electrode connecting portion, and an insulating protective layer. The insulating protective layer includes an outer insulating protective layer on a surface relatively far from the positive electrode current collector in a stacking direction of the electrode body and an inner insulating protective layer on a surface relatively close to the positive electrode current collector in the direction.
    Type: Application
    Filed: August 9, 2023
    Publication date: February 15, 2024
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Shota UCHIYAMA, Kazutaka YOSHIKAWA, Shotaro DEGUCHI
  • Publication number: 20240047730
    Abstract: A method for manufacturing a battery pack includes forming a positive electrode plate; forming a negative electrode plate; forming an electrode body; forming a battery cell; applying a binding load to battery cells; and initially charging the battery cells. When “A mg/cm2” represents a mass of a positive electrode active material on the positive electrode substrate, “C cm3/cm2” represents a volume of pores in the positive electrode substrate, “B mg/cm2” represents a mass of a negative electrode active material on the negative electrode substrate, “D cm3/cm2” represents a volume of pores in the negative electrode substrate, “E cm3/cm2” represents a volume of pores in the separator, and “F N/mm2” represents pressure applied to an opposing portion of a case of the electrode body facing a flat surface of the electrode body, a value of (A+B)/{(C+D+E)/F} is between 1300 and 3000, inclusive.
    Type: Application
    Filed: July 31, 2023
    Publication date: February 8, 2024
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventor: Takaaki IZUMOTO
  • Publication number: 20240047837
    Abstract: A method for joining a current collector includes (1) providing an electrode body that includes electrode plate end portions overlapping each other in a thickness-wise direction of the electrode plate end portions, (2) providing a current collector including a folded portion, where the folded portion includes two opposing holding walls that hold the electrode plate end portions of the electrode body in between, and a top part that connects the two holding walls and includes an opening, and (3) brazing edges of the electrode plate end portions, exposed from the opening of the top part, to the two holding walls to join the current collector to the electrode body.
    Type: Application
    Filed: July 31, 2023
    Publication date: February 8, 2024
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventor: Shigeki SAITO
  • Publication number: 20240033796
    Abstract: A roll exchange mechanism for a reduction roll apparatus, capable of contributing to simplifying work for replacing a roller is provided. A roll exchange mechanism for a reduction roll apparatus according to the present disclosure includes a rail member disposed parallel to a rotation shaft of a roller of the reduction roll apparatus, a placement part disposed in a support frame of a roll unit and configured to be placed on the rail member, a receiving part disposed in an apparatus frame of the reduction roll apparatus and configured so that the rail member is placed thereon, and an opening formed in the apparatus frame of the reduction roll apparatus and configured so that the roll unit can be inserted therein and removed therefrom.
    Type: Application
    Filed: July 24, 2023
    Publication date: February 1, 2024
    Applicants: Toyota Jidosha Kabushiki Kaisha, Primearth Ev Energy Co., Ltd., Prime Planet Energy & Solutions, Inc.
    Inventors: Taichi URAKAMI, Seiji Ishizu, Kazutoshi Iwata, Masakazu Umehara, Shingo Mori, Naoya Kishimoto
  • Patent number: 11884180
    Abstract: A battery system includes a nickel-metal hydride battery and an ECU that controls charging and discharging of the nickel-metal hydride battery. The ECU calculates a discharge electricity amount showing an integrated value of a current discharged from the nickel-metal hydride battery, and further calculates ?SOC of the nickel-metal hydride battery in a prescribed time period. The ECU calculates a charge reserve capacity of the nickel-metal hydride battery based on a temperature of the nickel-metal hydride battery, the discharge electricity amount, and the ?SOC.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: January 30, 2024
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Takayuki Irie, Jun Satoh, Junichi Matsumoto, Daisuke Koba, Yosuke Murota, Kazuki Nakano, Suguru Muraki
  • Publication number: 20240029236
    Abstract: An inspection apparatus includes a support, an image capturing unit, and a controller. The support supports a workpiece. The image capturing unit generates captured image data including an image of the workpiece. The controller executes image processing on the captured image data to evaluate the workpiece. The support includes an engraved portion, including a groove and serving as a reference for inspection, on a surface of the support in a non-contact region that is free from contact with the workpiece. The engraved portion is included in an image capturing range of the image capturing unit. The controller evaluates the workpiece using a dimension of the engraved portion that is stored in the controller in advance and a reference image that is an image of the engraved portion.
    Type: Application
    Filed: July 18, 2023
    Publication date: January 25, 2024
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Masakazu UMEHARA, Shingo MORI, Naoya KISHIMOTO
  • Publication number: 20240011525
    Abstract: In a press roll apparatus, bearing portions rotatably support end portions on both sides of a pair of press roll portions, respectively. Each of the bearing portions includes a bearing body portion, a rolling bearing, and a pair of oil seal portions. The bearing body portion has an annular shape, and the press roll portion is inserted. The rolling bearing is positioned on the side of the press roll portion inserted into the bearing body portion as viewed from the bearing body portion, and rotatably supports the press roll portion. The rolling bearing is coated with lubricant. The oil seal portions are positioned on both sides in the first direction as viewed from the rolling bearing. The oil seal portions are connected to the bearing body portion. The oil seal portions are positioned so as to be spaced from the press roll portion inserted into the bearing body portion.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 11, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Primearth EV Energy Co., Ltd., Prime Planet Energy & Solutions, Inc.
    Inventors: Taichi URAKAMI, Seiji ISHIZU, Kazutoshi IWATA, Masakazu UMEHARA, Shingo MORI, Naoya Kishimoto
  • Publication number: 20240011754
    Abstract: A measurement method includes a step of measuring an object to be measured and a reference object by a first measurement unit and a second measurement unit. The first measurement unit has a first displacement meter and a second displacement meter that face each other in a first direction and measure the distance from the object to be measured. The second measurement unit has a third displacement meter and a fourth displacement meter that face each other in the first direction and measure the distance from the reference object. A frame-like supporting member includes a first frame portion supporting the first displacement meter and the third displacement meter, a second frame portion supporting the second displacement meter and the fourth displacement meter, and a third frame portion and a fourth frame portion that connect both end portions of the first frame portion and the second frame portion to each other.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 11, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Primearth EV Energy Co., Ltd., Prime Planet Energy & Solutions, Inc.
    Inventors: Keito HORIBA, Taichi URAKAMI, Seiji ISHIZU, Kazutoshi IWATA, Masakazu UMEHARA, Naoya KISHIMOTO
  • Publication number: 20240006727
    Abstract: A joining method includes providing an electrode body that includes electrode plate end portions overlapping each other in a thickness-wise direction of the electrode plate end portions; providing a current collector including a folded portion, the folded portion includes two opposing holding walls that hold the electrode plate end portions of the electrode body in between, and a top portion that connects the two holding walls and includes an opening; and welding the electrode plate end portions to end surfaces of the two holding walls that define the opening by irradiating an edge of the electrode plate end portions with a laser beam in a state in which the edge of the electrode plate end portions held between the two holding walls projects into the opening.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 4, 2024
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventor: Shigeki SAITO
  • Publication number: 20230420648
    Abstract: A positive electrode plate for a lithium-ion rechargeable battery includes a positive electrode mixture layer. In the positive electrode mixture layer, a fibrous conductor is combined with a positive electrode active material in which an amount of lithium carbonate with respect to the positive electrode active material is between 0.31 wt % and 1.29 wt %, inclusive. A composition ratio of the fibrous conductor to the positive electrode active material is between 0.5 wt % and 2.0 wt %, inclusive. A coverage of the fibrous conductor to the positive electrode active material is 11.0% or less.
    Type: Application
    Filed: June 20, 2023
    Publication date: December 28, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventor: Kazuya TAGA
  • Publication number: 20230395808
    Abstract: A nonaqueous electrolyte rechargeable battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolyte. The positive electrode plate includes a positive electrode current collector, a positive electrode mixture layer including positive electrode active material particles and a conductor, and an insulative protection layer including insulative particles and a binder. In the insulative protection layer, a value of (the insulative particles)/(the insulative particles+the binder) is between 75 wt % and 85 wt %, inclusive. A single-surface thickness TI of the insulative protection layer is between 3.0 ?m and 15 ?m, inclusive. A porosity PI of the insulative protection layer is between 42% and 55%, inclusive. A ratio of the single-surface thickness TI to a single-surface thickness TP of the positive electrode mixture layer is between 0.12 and 0.80, inclusive.
    Type: Application
    Filed: May 31, 2023
    Publication date: December 7, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Shotaro DEGUCHI, Kazutaka YOSHIKAWA
  • Publication number: 20230387476
    Abstract: A non-aqueous rechargeable battery includes an electrode body, a non-aqueous electrolyte solution, and a battery case. The electrode body includes a negative electrode plate, a positive electrode plate, and a separator arranged between the negative and positive electrode plates. The battery case accommodates the electrode body and the non-aqueous electrolyte solution. The positive electrode plate includes a positive electrode substrate and a positive electrode mixture layer arranged on the positive electrode substrate. The positive electrode mixture layer is formed by applying a positive electrode mixture paste, containing at least a positive electrode active material and an organic solvent, to the positive electrode substrate and drying the positive electrode mixture paste so that the organic solvent remains in the positive electrode mixture layer.
    Type: Application
    Filed: May 29, 2023
    Publication date: November 30, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Junya HISHII, Hiroaki IKEDA
  • Publication number: 20230378426
    Abstract: A method for manufacturing a rechargeable battery including applying an electrode mixture that includes an electrode active material to a substrate that becomes a current collector, drying the applied electrode mixture, obtaining a specific surface area of the electrode active material before the drying the applied electrode mixture, in which the obtained specific surface area of the electrode active material is referred to as an obtained specific surface area, and a specific surface area of the electrode active material in a state in which the electrode mixture applied to the substrate forms an electrode plate is referred to as an electrode plate specific surface area; and adjusting the electrode plate specific surface area after the drying the applied electrode mixture by setting a drying condition of the electrode mixture in accordance with the obtained specific surface area.
    Type: Application
    Filed: May 15, 2023
    Publication date: November 23, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Katsuya TANAKA, Hiroaki IKEDA
  • Publication number: 20230369677
    Abstract: A battery pack includes battery cells and a spacer arranged between two adjacent battery cells. Each battery cell includes an electrode body and a case. The electrode body includes an upper curved portion, a flat portion, and a lower curved portion. The spacer presses one side wall of the case of one of the adjacent battery cells toward an inner side of the case at a part where the side wall opposes a region from the upper curved portion to the lower curved portion. The spacer forms passages for cooling air between the spacer and the side wall. A first cooling efficiency of the cooling air per unit area at a first opposing portion of the side wall that opposes the upper curved portion is less than a second cooling efficiency per unit area at a second opposing portion of the side wall that opposes the flat portion.
    Type: Application
    Filed: May 4, 2023
    Publication date: November 16, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Ryotaro SAKAI, Kousuke MURAISHI, Kentaro SUZUKI, Yuta NEMOTO, Hiroaki IKEDA
  • Publication number: 20230332881
    Abstract: An optical axis adjustment jig includes a main unit portion that is configured to be disposed between a pair of head units, and is fashioned in a flat plate shape. The main unit portion includes a reference portion for adjusting a distance between the head units, and an inclination of an optical axis of each of the head units, and a screen portion for aligning the optical axes of the head units. The reference portion and the screen portion are disposed arrayed in a direction orthogonal to a thickness direction of the main unit portion.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 19, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIMEARTH EV ENERGY CO., LTD., Prime Planet Energy & Solutions, Inc.
    Inventors: Keito HORIBA, Taichi Urakami, Seiji Ishizu, Kazutoshi Iwata, Masakazu Umehara, Naoya Kishimoto
  • Publication number: 20230327304
    Abstract: A battery pack includes battery cells and a spacer. Each battery cell includes an electrode body and a case accommodating the electrode body in a state sealed by a sealing portion. The battery cells are arranged in an arrangement direction. The spacer is arranged between the case of one of the battery cells and the case of an adjacent battery cell. The battery cells are bound together in a state in which a binding pressure is applied to the battery cells. The electrode body includes a flat portion. The spacer includes a base plate and projections projecting from the base plate toward the case of the adjacent battery cell. The projections include a top projection that presses the case of the adjacent battery cell at a position located upward from an upper edge of the flat portion where the sealing portion is the closest.
    Type: Application
    Filed: April 3, 2023
    Publication date: October 12, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Yusuke TAKASHI, Kentaro SUZUKI, Yuta NEMOTO, Hiroaki IKEDA
  • Publication number: 20230318014
    Abstract: To provide a rechargeable battery that limits damage to a separator, a positive connector is configured to be bent at an acute angle in a thickness-wise direction in a bending region, which is defined between a first position and a second position, on a boundary position between a flat surface region and a second position in a longitudinal direction. The first position is a position at which a second distal end of a negative plate is disposed. The second position is a position separated from a third position, at which a first distal end of a separator is disposed, by a thickness of a positive mixture layer in a second width-wise direction.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Masaya OGURA, Shota UCHIYAMA, Hiroaki IKEDA
  • Publication number: 20230299299
    Abstract: An electrode mixture includes an electrode active material and a carbon nanotube as a conductive fibrous carbon material. The electrode mixture includes an inorganic nanoparticle disposed on a surface of the electrode active material.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Kazuya TAGA, Ryotaro SAKAI, Tetsuya KANEKO, Hiroaki IKEDA