Patents by Inventor Kazunori Ojima
Kazunori Ojima 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: 11749871Abstract: The present disclosure provides a battery module having more improved safety than the conventional battery pack and capable of protecting the battery cells more reliably. The current value at which a cell blocking portion CB inside each of a plurality of battery cells BC interrupts a current path inside the battery cell BC is larger than the current value at which the module fuse MF connected in series to the module terminals MT and the plurality of battery cells BC blows out.Type: GrantFiled: March 1, 2019Date of Patent: September 5, 2023Assignee: VEHICLE ENERGY JAPAN INC.Inventors: Kazunori Ojima, Sadayuki Aoki, Osamu Kubota, Yoshitaka Watahiki
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Patent number: 11699832Abstract: To prevent an increase in the electrical resistance between a terminal for external connection and a cell terminal of a battery cell of a battery cell group. A battery module 100 includes a battery cell group 10, a pair of end plates 20, a bus bar 30, and a fastening member 40. The end plate 20 includes a recess 21 adapted to partially house the fastening member 40 in a mutually movable manner in one direction (X-direction) corresponding to the stacked direction of the plurality of battery cells 1. The battery module 100 also has a gap S between an inner side wall 21a of the recess 21 and the fastening member 40 in the one direction (X-direction).Type: GrantFiled: August 3, 2018Date of Patent: July 11, 2023Assignee: VEHICLE ENERGY JAPAN INC.Inventors: Osamu Kubota, Kazunori Ojima, Yoshitaka Watahiki, Takashi Suzuki
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Patent number: 11670814Abstract: An electricity storage block includes: an element stacked body in which a plurality of square electricity storage elements is stacked and arranged such that wide surfaces of the adjacent square electricity storage elements are opposed to each other; and a pressing device that presses the element stacked body toward the thermally-conductive sheet arranged on the heat transfer plate. The element stacked body includes holders having wide surface abutment parts in abutment with one of the wide surfaces in a pair in at least the predetermined square electricity storage element. The outer surfaces of the bottom plates of the square electricity storage elements are set as heat transfer surfaces thermally connected to the heat transfer plate via the thermally-conductive sheet. The heat-transfer surfaces protrude toward the heat transfer plate more than the end surfaces of the wide surface abutment parts at the heat transfer plate side.Type: GrantFiled: December 26, 2017Date of Patent: June 6, 2023Assignee: VEHICLE ENERGY JAPAN, INC.Inventors: Osamu Kubota, Akira Sato, Kazunori Ojima, Sadayuki Aoki
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Publication number: 20220294073Abstract: Provided is a battery module capable of suppressing failures in accurate detection of the state of battery cells due to the effects of unwanted radiation from the battery cells. A battery module 30 includes a plurality of battery cells 20 that are stacked and disposed and a wiring member 50 to detect the state of the plurality of battery cells 20. In the wiring member 50, an insulating base material 52, a wiring layer 53 disposed on one surface 52a side of the base material 52 and including a plurality of detection lines 53a to detect the state of the plurality of battery cells 20, and a ground layer 55 disposed in a position corresponding to at least the wiring layer 53, on the other surface 52b side of the base material 52 are stacked.Type: ApplicationFiled: August 28, 2020Publication date: September 15, 2022Inventors: Kazunori OJIMA, Sadayuki AOKI, Osamu KUBOTA, Yoshitaka WATAHIKI
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Publication number: 20220181748Abstract: This secondary cell module has: a plurality of unit cells, each having a pair of positive and negative electrode terminals; a first bus bar providing an electrical connection between unit cells; and a second bus bar disposed on at least two unit cells of the plurality of unit cells and electrically connected to an external terminal. In addition, the present invention is characterized in that the second bus bar has a first metal member connected to the positive or negative electrode terminal, a second metal member connected to the external terminal, a third metal member connected to a voltage detection terminal, a first linkage member connecting the first metal member to the second metal member, and a second linkage member connecting the first metal member to the third metal member, and the first linkage member and the second linkage member are connected to each other via the first metal member.Type: ApplicationFiled: February 23, 2022Publication date: June 9, 2022Inventors: Akira IRIE, Sadayuki AOKI, Kazunori OJIMA, Osamu KUBOTA
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Patent number: 11264666Abstract: Provided is an assembled battery which is downsized and in which a fastening force between a busbar and an external terminal cable at a fixing part is improved. Provided is an assembled battery including: a group of cells in which a plurality of cells, each having electrode terminals, is stacked; plate-shaped members arranged at ends of the group of cells; and cell holders arranged between the plate-shaped members and the group of cells, in which each of the cell holders is provided with a terminal fixing part of the assembled battery, and each of the plate-shaped members has a fitting part to be fitted to the terminal fixing part.Type: GrantFiled: August 4, 2017Date of Patent: March 1, 2022Assignee: VEHICLE ENERGY JAPAN, INC.Inventors: Osamu Kubota, Kazunori Ojima, Sadayuki Aoki
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Publication number: 20210408641Abstract: Provided is a battery module capable of improving the safety as compared with the conventional one. The battery module includes a plurality of battery cells, and busbars 10 connecting to external terminals of the battery cells. The busbars 10 include a busbar, the busbar has a pair of terminal portions 11 and 12, a current-carrying portion 13 connecting the pair of terminal portions 11 and 12, and a fuse 14 placed at the current-carrying portion 13. The current-carrying portion 13 surrounds the fuse 14.Type: ApplicationFiled: October 31, 2019Publication date: December 30, 2021Inventors: Yoshitaka WATAHIKI, Sadayuki AOKI, Kazunori OJIMA, Osamu KUBOTA
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Publication number: 20210305646Abstract: Provided is an assembled battery which is downsized and in which a fastening force between a busbar and an external terminal cable at a fixing part is improved. Provided is an assembled battery including: a group of cells in which a plurality of cells, each having electrode terminals, is stacked; plate-shaped members arranged at ends of the group of cells; and cell holders arranged between the plate-shaped members and the group of cells, in which each of the cell holders is provided with a terminal fixing part of the assembled battery, and each of the plate-shaped members has a fitting part to be fitted to the terminal fixing part.Type: ApplicationFiled: August 4, 2017Publication date: September 30, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Osamu KUBOTA, Kazunori OJIMA, Sadayuki AOKI
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Publication number: 20210218082Abstract: Provided is a battery pack capable of preventing a damage to the insulation layer on the bottom face of each of battery cells and improving the cooling performance for the battery cells as compared with the conventional configuration. A battery pack includes a plurality of battery cells 10, a plurality of cell holders 20, a plurality of plates 30, an insulation layer 40 on the entire bottom face 10b of each battery cell 10, a heat-transfer sheet 50, and a cooler 60 to cool the battery cells 10 via the heat-transfer sheet 50. The lower end 30b of each plate 30 protrudes downward from the lower face 40b of each insulation layer 40. The cell holder 20 has supports that support the side faces of the battery cell 10 and an opening 22 that exposes the entire lower face 40b of the insulation layer 40 to the heat-transfer sheet 50.Type: ApplicationFiled: March 6, 2019Publication date: July 15, 2021Applicant: Vehicle Energy Japan Inc.Inventors: Osamu KUBOTA, Sadayuki AOKI, Kazunori OJIMA, Yoshitaka WATAHIKI, Akira IRIE, Tatsuo SUGAWARA
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Publication number: 20210210826Abstract: The present disclosure provides a battery module having more improved safety than the conventional battery pack and capable of protecting the battery cells more reliably. The current value at which a cell blocking portion CB inside each of a plurality of battery cells BC interrupts a current path inside the battery cell BC is larger than the current value at which the module fuse MF connected in series to the module terminals MT and the plurality of battery cells BC blows out.Type: ApplicationFiled: March 1, 2019Publication date: July 8, 2021Applicant: VEHICLE ENERGY JAPAN INC.Inventors: Kazunori OJIMA, Sadayuki AOKI, Osamu KUBOTA, Yoshitaka WATAHIKI
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Publication number: 20210159572Abstract: To prevent an increase in the electrical resistance between a terminal for external connection and a cell terminal of a battery cell of a battery cell group. A battery module 100 includes a battery cell group 10, a pair of end plates 20, a bus bar 30, and a fastening member 40. The end plate 20 includes a recess 21 adapted to partially house the fastening member 40 in a mutually movable manner in one direction (X-direction) corresponding to the stacked direction of the plurality of battery cells 1. The battery module 100 also has a gap S between an inner side wall 21a of the recess 21 and the fastening member 40 in the one direction (X-direction).Type: ApplicationFiled: August 3, 2018Publication date: May 27, 2021Applicant: VEHICLE ENERGY JAPAN INC.Inventors: Osamu KUBOTA, Kazunori OJIMA, Yoshitaka WATAHIKI, Takashi SUZUKI
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Patent number: 10942407Abstract: The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red, green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.Type: GrantFiled: December 23, 2019Date of Patent: March 9, 2021Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Ikuko Mori, Munenori Motooka, Ryutaro Oke, Kazunori Ojima, Kikuo Ono
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Patent number: 10784480Abstract: An assembled battery that can be easily assembled and that has high reliability is provided. An assembled battery includes secondary batteries with a flat prismatic shape that are stacked in a thickness direction (X-axis direction), spacer members that are stacked alternately with the secondary batteries, and side plates that extend in a stacking direction of the secondary batteries and face side surfaces of the spacer members along the stacking direction. The spacer member includes an engagement part to be engaged with the side plate in a manner that sliding is possible in the stacking direction (X-axis direction).Type: GrantFiled: September 20, 2016Date of Patent: September 22, 2020Assignee: VEHICLE ENERGY JAPAN INC.Inventors: Sadayuki Aoki, Kazunori Ojima
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Publication number: 20200287194Abstract: Provided is a battery module capable of efficiently arranging wires such as voltage detection wires and temperature detection wires, and realizing the miniaturization thereof. The electrical connecting member housing case of the present invention includes a wire housing space formed from a bottom part, a wall part, and a lid part, wherewith the wall part includes an outer wall, an end face, and an inner wall facing the wires, and wherein the lid part is connected to the wall part via a hinge part provided to the inner wall or the end face.Type: ApplicationFiled: August 3, 2018Publication date: September 10, 2020Inventors: Kazuaki URANO, Sadayuki AOKI, Kazunori OJIMA, Takashi SUZUKI
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Publication number: 20200133087Abstract: The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red, green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.Type: ApplicationFiled: December 23, 2019Publication date: April 30, 2020Inventors: Ikuko MORI, Munenori MOTOOKA, Ryutaro OKE, Kazunori OJIMA, Kikuo ONO
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Patent number: 10551706Abstract: The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red, green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.Type: GrantFiled: March 1, 2019Date of Patent: February 4, 2020Assignees: Japan DIsplay Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Ikuko Mori, Munenori Motooka, Ryutaro Oke, Kazunori Ojima, Kikuo Ono
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Publication number: 20190196287Abstract: The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red, green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.Type: ApplicationFiled: March 1, 2019Publication date: June 27, 2019Inventors: Ikuko MORI, Munenori MOTOOKA, Ryutaro OKE, Kazunori OJIMA, Kikuo ONO
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Patent number: 10254611Abstract: The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red, green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.Type: GrantFiled: June 7, 2017Date of Patent: April 9, 2019Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Ikuko Mori, Munenori Motooka, Ryutaro Oke, Kazunori Ojima, Kikuo Ono
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Publication number: 20180351142Abstract: An assembled battery that can be easily assembled and that has high reliability is provided. An assembled battery includes secondary batteries with a flat prismatic shape that are stacked in a thickness direction (X-axis direction), spacer members that are stacked alternately with the secondary batteries, and side plates that extend in a stacking direction of the secondary batteries and face side surfaces of the spacer members along the stacking direction. The spacer member includes an engagement part to be engaged with the side plate in a manner that sliding is possible in the stacking direction (X-axis direction).Type: ApplicationFiled: September 20, 2016Publication date: December 6, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Sadayuki AOKI, Kazunori OJIMA
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Publication number: 20180123199Abstract: An electricity storage block includes: an element stacked body in which a plurality of square electricity storage elements is stacked and arranged such that wide surfaces of the adjacent square electricity storage elements are opposed to each other; and a pressing device that presses the element stacked body toward the thermally-conductive sheet arranged on the heat transfer plate. The element stacked body includes holders having wide surface abutment parts in abutment with one of the wide surfaces in a pair in at least the predetermined square electricity storage element. The outer surfaces of the bottom plates of the square electricity storage elements are set as heat transfer surfaces thermally connected to the heat transfer plate via the thermally-conductive sheet. The heat-transfer surfaces protrude toward the heat transfer plate more than the end surfaces of the wide surface abutment parts at the heat transfer plate side.Type: ApplicationFiled: December 26, 2017Publication date: May 3, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Osamu KUBOTA, Akira SATO, Kazunori OJIMA, Sadayuki AOKI