Patents by Inventor Koji Umemura
Koji Umemura 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).
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Patent number: 11075398Abstract: A cell pack including: a plurality of unit cells arranged in an arrangement direction, each unit cell including a cell case accommodating an electrode body and an electrolytic solution; and a spacer disposed between two unit cells adjacent to each other in the arrangement direction. The cell case has a side surface facing the spacer. At least one of the side surfaces has a pressing region pressed by the spacer and a non-pressing region not pressed by the spacer. An expanding portion bulging in a direction of approaching the spacer is provided in the non-pressing region of the cell case, and a gap between the cell case and the spacer is reduced by the expanding portion.Type: GrantFiled: November 16, 2018Date of Patent: July 27, 2021Assignee: Toyota Jidosha Kabushiki KaishaInventor: Koji Umemura
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Patent number: 11067637Abstract: A control device calculates an amount of increase ?Am in freezing temperature measurement value Am from an initial freezing temperature ?0 and calculates an amount of lowering in capacity corresponding to the amount of increase ?Am in freezing temperature as an amount of lowering in capacity ?Bx due to deterioration of a material. The control device calculates an amount of lowering in capacity measurement value Bm from an initial capacity B0 as a whole amount of lowering in capacity ?Bm and calculates a material deterioration ratio X by using ?Bx and ?Bm. The control device calculates a value resulting from subtraction of ?Bx from ?Bm as an amount of lowering in capacity ?By due to precipitation of Li and calculates an Li precipitation deterioration ratio Y by using ?By and ?Bm.Type: GrantFiled: April 20, 2018Date of Patent: July 20, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryo Kanada, Koji Umemura, Akemi Nakatake
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Patent number: 10826135Abstract: A battery pack includes a first unit battery, a second unit battery, and a spacer. The first unit battery includes a wound electrode body and a casing that accommodates an electrolyte solution. The spacer includes: a primary surface that faces the first unit battery; and plural projections, each of which is projected from the primary surface. The plural projections include: a first projection that abuts the casing in a state where the casing is not expanded; and a second projection, a height of which is lower than a height of the first projection.Type: GrantFiled: October 18, 2018Date of Patent: November 3, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kengo Iwakura, Isao Takahashi, Junta Katayama, Koji Umemura, Yuki Okamoto
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Publication number: 20200185691Abstract: The present disclosure provides a technique that enables a contraction of a separator due to generation of heat by an electrode body to be appropriately suppressed and an internal short circuit due to a contraction of the separator to be preferably prevented. In a sealed battery 1 disclosed herein, a core portion 22 is formed such that a distance L1 and a distance L2 satisfy 1<L1/L2<1.8, the distance L1 being a shortest distance between a positive electrode side edge portion 22a that is a side edge portion of the core portion 22 on a side of a positive electrode connecting portion 24 and a side edge portion on a side of the core portion 22 of a positive electrode-connected location 32 and the distance L2 being a shortest distance between a negative electrode side edge portion 22b that is a side edge portion of the core portion 22 on a side of a negative electrode connecting portion 26 and a side edge portion on the side of the core portion 22 of a negative electrode-connected location 42.Type: ApplicationFiled: November 25, 2019Publication date: June 11, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji UMEMURA, Kazuyuki KUSAMA
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Publication number: 20190157709Abstract: A cell pack including: a plurality of unit cells arranged in an arrangement direction, each unit cell including a cell case accommodating an electrode body and an electrolytic solution; and a spacer disposed between two unit cells adjacent to each other in the arrangement direction. The cell case has a side surface facing the spacer. At least one of the side surfaces has a pressing region pressed by the spacer and a non-pressing region not pressed by the spacer. An expanding portion bulging in a direction of approaching the spacer is provided in the non-pressing region of the cell case, and a gap between the cell case and the spacer is reduced by the expanding portion.Type: ApplicationFiled: November 16, 2018Publication date: May 23, 2019Inventor: Koji Umemura
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Publication number: 20190131665Abstract: A battery pack includes a first unit battery, a second unit battery, and a spacer. The first unit battery includes a wound electrode body and a casing that accommodates an electrolyte solution. The spacer includes: a primary surface that faces the first unit battery; and plural projections, each of which is projected from the primary surface. The plural projections include: a first projection that abuts the casing in a state where the casing is not expanded; and a second projection, a height of which is lower than a height of the first projection.Type: ApplicationFiled: October 18, 2018Publication date: May 2, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kengo IWAKURA, Isao TAKAHASHI, Junta KATAYAMA, Koji UMEMURA, Yuki OKAMOTO
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Publication number: 20180340984Abstract: A control device calculates an amount of increase ?Am in freezing temperature measurement value Am from an initial freezing temperature ?0 and calculates an amount of lowering in capacity corresponding to the amount of increase ?Am in freezing temperature as an amount of lowering in capacity ?Bx due to deterioration of a material. The control device calculates an amount of lowering in capacity measurement value Bm from an initial capacity B0 as a whole amount of lowering in capacity ?Bm and calculates a material deterioration ratio X by using ?Bx and ?Bm. The control device calculates a value resulting from subtraction of ?Bx from ?Bm as an amount of lowering in capacity ?By due to precipitation of Li and calculates an Li precipitation deterioration ratio Y by using ?By and ?Bm.Type: ApplicationFiled: April 20, 2018Publication date: November 29, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryo KANADA, Koji UMEMURA, Akemi NAKATAKE
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Publication number: 20010044928Abstract: The present invention allows someone not familiar with systems and programming of CAD and CAE to easily build a simulator. Process blocks divided into a sequence of work steps for simulation are previously provided using a computer system. A plurality of process blocks related will be registered and those related process blocks will be provided as predetermined process blocks. By relating those process blocks as desired, a simulator as desired may be built. Previously provided GUI components will be defined after relating blocks.Type: ApplicationFiled: May 10, 2001Publication date: November 22, 2001Inventors: Shigeru Akaike, Tatsuya Tsuge, Kengo Furuki, Koji Umemura
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Patent number: 4844621Abstract: A fuel pump of regenerative type mounted in a fuel tank. The fuel pump has a pump housing defining a pump chamber, an impeller rotatably mounted in the pump housing and provided with a multiplicity of blades formed thereon, and a driving device for driving the impeller. The fuel pump further has a vapor relief port for relieving, from the pump chamber into the space in the fuel tank, vapor of fuel generated as a result of rotation of the impellar, and a vapor relief extension passage connected to the vapor relief port and opening at least one end in the space in the fuel tank.Type: GrantFiled: August 10, 1988Date of Patent: July 4, 1989Assignee: Nippondenso Co., Ltd.Inventors: Koji Umemura, Toru Nakashima, Yoshifumi Ina, Masashi Miyamoto