Patents by Inventor Keisuke Shimizu
Keisuke Shimizu 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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Publication number: 20220069347Abstract: A solid-state battery including a solid-state battery laminated body including a positive electrode layer, a negative electrode layer, and a solid electrolyte interposed between the positive electrode layer and the negative electrode layer; a positive electrode terminal on a first side surface of the solid-state battery laminated body; and a negative electrode terminal on a second side surface of the solid-state battery laminated body, the second side surface facing the first side surface. In such a solid-state battery, in at least one electrode layer of the positive electrode layer and the negative electrode layer, a terminal contact end portion containing an electrode active material is in direct contact with the respective positive or negative electrode terminal, and a thickness of a non-terminal contact end portion in the electrode layer is smaller than a thickness of a central portion of the electrode layer.Type: ApplicationFiled: November 9, 2021Publication date: March 3, 2022Inventors: Yusuke Funada, Keisuke Shimizu, Kiyoshi Kumagae, Koichi Nakano, Nobuyuki Iwane, Sumito Shiina, Katsunori Takahara
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Publication number: 20220021071Abstract: Battery pack (10) having a substantially sealed structure includes a plurality of cells (11-16) each having an opened portion provided in order to discharge an internal gas when an internal pressure rises. Non-resettable pressure switch (30, 31) that is connected to controller (50) by a signal line. The pressure switch changes irreversibly from a significant state to a non-significant state when a pressure in battery pack (10) is greater than a predetermined pressure threshold value.Type: ApplicationFiled: November 8, 2019Publication date: January 20, 2022Inventors: KEISUKE SHIMIZU, TAKESHI NAGAO, GORO FUJITA
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Publication number: 20220013873Abstract: A solid-state battery that includes a solid-state battery laminate having at least one battery constituent unit in a lamination direction, the battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer; a positive electrode terminal on a surface of the solid-state battery laminate; and a negative electrode terminal on the surface of the solid-state battery laminate. In addition, the negative electrode layer includes a negative electrode active material configured to be charged and discharged at a potential of ?2 V or less with respect to a standard electrode potential, and the negative electrode terminal includes a terminal material that does not react with lithium ions at a potential of ?3 V to ?2 V with respect to the standard electrode potential.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventors: Kiyoshi Kumagae, Takuya Matsuyama, Keisuke Shimizu
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Patent number: 11215237Abstract: Provided is a clutch device configured so that different desired torque values can be set without influence between assist torque and slipper torque. A clutch device 100 includes a center clutch 105 holding clutch plates 104 arranged facing friction plates 103 to be rotatably driven by a drive shaft, and a pressure clutch 111. The center clutch 105 includes center-side assist cam surfaces 106a and center-side slipper cam surfaces 106b. The pressure clutch 111 includes pressure-side assist cam surfaces 112a and pressure-side slipper cam surfaces 112b. A contact surface between the center-side assist cam surface 106a and the pressure-side assist cam surface 112a and a contact surface between the center-side slipper cam surface 106b and the pressure-side slipper cam surface 112b are formed at different positions in a radial direction.Type: GrantFiled: September 28, 2018Date of Patent: January 4, 2022Assignee: Kabushiki Kaisha F.C.C.Inventors: Yuki Kobayashi, Keisuke Shimizu
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Patent number: 11196090Abstract: A solid battery including a positive electrode layer; a negative electrode layer; a current collecting layer; a solid electrolyte layer; and an insulating layer. Each of the positive electrode layer, the negative electrode layer, the current collecting layer, the solid electrolyte layer, and the insulating layer contains a material having a glass transition point of 500° C. or less in an amount of 10 vol % to 60 vol %, and among contents of the material having a glass transition point of 500° C. or less in each of the positive electrode layer, the negative electrode layer, the current collecting layer, the solid electrolyte layer, and the insulating layer, a difference between a maximum content and a minimum content is 30 vol % or less.Type: GrantFiled: April 17, 2019Date of Patent: December 7, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keisuke Shimizu, Tomohiro Kato, Masamitsu Suzuki, Noriyuki Aoki, Masahiro Morooka
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Patent number: 11169482Abstract: A housing includes at least one openable cover and at least one adjacent cover. The at least one openable cover swings on a hinge to separate an interior of the housing from an exterior of the housing. The at least one openable cover has a first side edge on a side of the hinge. The at least one adjacent cover is adjacent to the at least one openable cover. The at least one adjacent cover has a second side edge neighboring the first side edge of the at least one openable cover across a gap. One of the at least one openable cover and the at least one adjacent cover includes at least one projection projecting into the gap and another one of the at least one openable cover and the at least one adjacent cover includes a recess that accommodates the at least one projection in the gap.Type: GrantFiled: December 21, 2020Date of Patent: November 9, 2021Assignee: RICOH COMPANY, LTD.Inventors: Masahiro Ishida, Naoki Matsuda, Keisuke Shimizu, Kohta Takenaka
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Patent number: 11165095Abstract: A solid-state battery that includes a cathode layer which occludes and discharges an electrode reactant ion, an anode layer which occludes and discharges the electrode reactant ion and partially faces the cathode layer, and a solid electrolyte layer between the cathode layer and the anode layer and including a high ion conductivity portion in a first region in which the cathode layer and the anode layer face each other, and a low ion conductivity portion facing the cathode layer in a second region in which the cathode layer and the anode layer do not face each other.Type: GrantFiled: September 24, 2019Date of Patent: November 2, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keisuke Shimizu, Masamitsu Suzuki
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Patent number: 11165100Abstract: A solid battery including a positive electrode layer; a negative electrode layer; a current collecting layer; a solid electrolyte layer; and an insulating layer. Each of the positive electrode layer, the negative electrode layer, the current collecting layer, the solid electrolyte layer, and the insulating layer contains a material having a glass transition point of 500° C. or less in an amount of 10 vol % to 60 vol %, and among contents of the material having a glass transition point of 500° C. or less in each of the positive electrode layer, the negative electrode layer, the current collecting layer, the solid electrolyte layer, and the insulating layer, a difference between a maximum content and a minimum content is 30 vol % or less.Type: GrantFiled: April 17, 2019Date of Patent: November 2, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keisuke Shimizu, Tomohiro Kato, Masamitsu Suzuki, Noriyuki Aoki, Masahiro Morooka
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Patent number: 11081764Abstract: A battery module has a plurality of battery cells each including a cell case and a battery element contained in the cell case. The battery module includes a lead to electrically connect a terminal of each of the battery cells to a current collector and a heat shutoff mechanism to break electrical connection between the terminal and the current collector by heat from the cell case when the cell case reaches a predetermined temperature or higher.Type: GrantFiled: November 8, 2017Date of Patent: August 3, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Motokawa, Yoshito Kaga, Keisuke Shimizu
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Patent number: 11050091Abstract: A solid battery including at least one first laminate body in which a first electrolyte layer, a first positive electrode layer, a first current collecting layer, and a second positive electrode layer are laminated in this order; at least one second laminate body in which a second electrolyte layer, a first negative electrode layer, a second current collecting layer, and a second negative electrode layer are laminated in this order; a first insulating layer connected to at least part of a side surface portion of the first laminate body; and a second insulating layer connected to at least part of a side surface portion of the second laminate body. Each of the first current collecting layer and the second current collecting layer has ionic conductivity of 10?7 S/cm or lower, and each of the first insulating layer and the second insulating layer has ionic conductivity of 10?7 S/cm or lower.Type: GrantFiled: April 25, 2019Date of Patent: June 29, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keisuke Shimizu, Masamitsu Suzuki, Norio Fukasawa
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Patent number: 11024920Abstract: A Battery module includes a plurality of cylindrical batteries and battery a holder holding the cylindrical batteries arranged in at least one row. The battery holder includes a first side wall part, a second side wall part, and a low thermal-conductive member disposed between the side wall parts. The low thermal-conductive member includes a first partition walls interposed between respective the cylindrical batteries and the first side wall part, and the second partition walls interposed between the respective cylindrical batteries and the second side wall part. The first and the second partition walls are alternately arrayed along the row.Type: GrantFiled: August 2, 2017Date of Patent: June 1, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Keisuke Shimizu
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Publication number: 20210151842Abstract: A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.Type: ApplicationFiled: January 26, 2021Publication date: May 20, 2021Inventors: Shinya MOTOKAWA, Daisuke KISHII, Keisuke SHIMIZU, Akira TAKANO
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Publication number: 20210109476Abstract: A housing includes at least one openable cover and at least one adjacent cover. The at least one openable cover swings on a hinge to separate an interior of the housing from an exterior of the housing. The at least one openable cover has a first side edge on a side of the hinge. The at least one adjacent cover is adjacent to the at least one openable cover. The at least one adjacent cover has a second side edge neighboring the first side edge of the at least one openable cover across a gap. One of the at least one openable cover and the at least one adjacent cover includes at least one projection projecting into the gap and another one of the at least one openable cover and the at least one adjacent cover includes a recess that accommodates the at least one projection in the gap.Type: ApplicationFiled: December 21, 2020Publication date: April 15, 2021Applicant: Ricoh Company, Ltd.Inventors: Masahiro ISHIDA, Naoki MATSUDA, Keisuke SHIMIZU, Kohta TAKENAKA
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Patent number: 10938018Abstract: A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.Type: GrantFiled: November 8, 2017Date of Patent: March 2, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Motokawa, Daisuke Kishii, Keisuke Shimizu, Akira Takano
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Publication number: 20200358058Abstract: A battery pack includes a battery stack having a plurality of prismatic batteries being stacked. The battery pack further includes a cooling plate extending in a stack direction of the prismatic batteries in the battery stack. The cooling plate includes a plurality of coolant passages and a plurality of grooves. The coolant passages extend in a perpendicular direction substantially perpendicular to the stack direction of the prismatic batteries, and allow a coolant to flow in the coolant passages. The grooves constitute heat conduction inhibitors configured to inhibit heat conduction in the stack direction of the prismatic batteries.Type: ApplicationFiled: January 22, 2019Publication date: November 12, 2020Inventors: CHIFUMI MURAYAMA, SHINYA MOTOKAWA, KEISUKE SHIMIZU
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Publication number: 20200358152Abstract: A battery pack includes first and second battery modules arranged in a first direction. In the first battery module, a first heat transfer part and a first heat insulator are disposed between battery cells adjacent in a second direction orthogonal to the first direction. In the second battery module, a second heat transfer part and a second heat insulator are disposed between battery cells adjacent in the second direction. The first heat transfer part constitutes a part of a heat transfer component that is put across and connected to both the first and the second battery modules. The first heat transfer part is connected to one of the battery cells in the first battery module so as to enable heat transfer. The second heat transfer part constitutes another part of the heat transfer component and is connected to one of the battery cells in the second battery module.Type: ApplicationFiled: January 15, 2019Publication date: November 12, 2020Inventors: KEISUKE SHIMIZU, SHINYA MOTOKAWA, CHIFUMI MURAYAMA
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Publication number: 20200350613Abstract: An all-solid-state battery that includes a power storage part having a positive electrode layer, a negative electrode layer, and an electrolyte layer interposed between the positive electrode layer and the negative electrode layer; an internal electrode at an end surface of the power storage part; an electrode extraction part electrically connected to the internal electrode; a buffer layer covering the power storage part, the internal electrode, and a first part of the electrode extraction part; a barrier layer covering the buffer layer; and an impact-resistant layer covering the barrier layer such that a second part of the electrode extraction part extends from the impact-resistant layer.Type: ApplicationFiled: July 9, 2020Publication date: November 5, 2020Inventors: Tomohiro Kato, Hiroe Ishihara, Kiyoshi Kumagae, Keisuke Shimizu
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Publication number: 20200292010Abstract: Provided is a clutch device configured so that different desired torque values can be set without influence between assist torque and slipper torque. A clutch device 100 includes a center clutch 105 holding clutch plates 104 arranged facing friction plates 103 to be rotatably driven by a drive shaft, and a pressure clutch 111. The center clutch 105 includes center-side assist cam surfaces 106a and center-side slipper cam surfaces 106b. The pressure clutch 111 includes pressure-side assist cam surfaces 112a and pressure-side slipper cam surfaces 112b. A contact surface between the center-side assist cam surface 106a and the pressure-side assist cam surface 112a and a contact surface between the center-side slipper cam surface 106b and the pressure-side slipper cam surface 112b are formed at different positions in a radial direction.Type: ApplicationFiled: September 28, 2018Publication date: September 17, 2020Inventors: Yuki KOBAYASHI, Keisuke SHIMIZU
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Patent number: 10770750Abstract: A lithium ion conductor includes a first lithium ion conductor that contains at least one selected from among oxide crystals and glass ceramics, and a second lithium ion conductor that has a sintering temperature of not more than 600° C. The lithium ion conductivity of the first lithium ion conductor is higher than the lithium ion conductivity of the second lithium ion conductor.Type: GrantFiled: March 10, 2016Date of Patent: September 8, 2020Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keisuke Shimizu, Masamitsu Suzuki, Tatsuya Furuya, Kenji Kishimoto, Go Sudo, Yasushi Tamura, Yumiko Yoshida
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Patent number: 10717260Abstract: Provided is a manufacturing method of a laminated structure including a step of bonding a single layer or multiple layers of graphene formed on a first substrate to a second substrate through an adhesive layer including a delayed-curing UV curable resin by a roll-to-roll process.Type: GrantFiled: May 30, 2013Date of Patent: July 21, 2020Assignee: Sony CorporationInventors: Keisuke Shimizu, Nozomi Kimura