Patents by Inventor Kousuke MURAISHI

Kousuke MURAISHI 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: 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: 20230073919
    Abstract: A spacer of a battery module includes a plurality of bars provided extending in a width direction of adjacent battery cells and arranged at an interval from each other, a first fin, and a second fin. The first fin of the battery module takes a shape extending upward from the bar toward one of the battery cells and contact a principal surface of the battery cell. The second fin takes a shape extending downward from the bar toward the other battery cell and contact a principal surface of the other battery cell. A fin length of the first fin and a fin length of the second fin are each smaller than the interval between the bars. The sum of those fin lengths is larger than the interval between the bars.
    Type: Application
    Filed: March 1, 2022
    Publication date: March 9, 2023
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventor: Kousuke MURAISHI
  • Publication number: 20230035839
    Abstract: A battery pack includes a battery stack including a plurality of battery cells and a case member in which the battery stack is housed. The case member includes an end wall part located on one end of the battery stack in a stacking direction and continuously integrated with a floor part, and a mounting-shape part located on an opposite end from the end wall part and configured to mount a panel-shaped member. The battery stack is retained in the case member while being held by compression between the end wall part and the end panel on the other end. The end panel is pressed against the mounting-shape part in a direction away from the end wall part by compression reaction force of the battery stack, and fixed therein.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 2, 2023
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventor: Kousuke MURAISHI
  • Publication number: 20230032641
    Abstract: A battery pack includes a battery stack including a plurality of battery cells and a case member in which the battery stack is housed. The case member includes an end wall part located on one end of the battery stack in a stacking direction and continuously integrated with a floor part, and a mounting-shape part located on an opposite end from the end wall part and configured to mount a panel-shaped member. The battery stack is retained in the case member while being held by compression between the end wall part and the end panel on the other end. The end panel is pressed against the mounting-shape part in a direction away from the end wall part by compression reaction force of the battery stack, and fixed therein.
    Type: Application
    Filed: March 1, 2022
    Publication date: February 2, 2023
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventor: Kousuke MURAISHI