Patents by Inventor Toshiki Takahashi
Toshiki Takahashi 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: 12119506Abstract: A lithium-ion battery device comprises a housing, a battery cell stored inside the housing, and an adjacent member provided adjacently to and on a rearward side, in a vehicle longitudinal direction, of the battery cell. The battery cell comprises a cell case, an electrode body stored inside the cell case, and a pair of terminals. The cell case includes a first main face and a second main face which face to each other in the vehicle longitudinal direction. At least two gap-forming portions which respectively have a smaller area than the second main face and have a specified thickness of the vehicle longitudinal direction are arranged between the second main face and the adjacent member. The two gap-forming portions are provided to be spaced apart from each other in an inter-terminal direction of the battery cell.Type: GrantFiled: September 17, 2020Date of Patent: October 15, 2024Assignee: MAZDA MOTOR CORPORATIONInventors: Wataru Masuda, Teruhiko Hanaoka, Toshiki Takahashi, Chikara Kawamura, Masanori Honda
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Patent number: 12003165Abstract: An object of the present invention is to promote weight reduction while improving torsional stiffness of a motor case of a rotary electric machine. A motor case accommodates a stator, a rotor facing an inner periphery of the stator, and a rotating shaft coupled to the rotor. The motor case includes a peripheral wall which is formed in a tubular shape and has a space accommodating the stator and the rotating shaft on an inside, a flange portion which is formed at one end of the peripheral wall and is coupled to an outside, and damping ribs which are formed at an outer periphery of the peripheral wall, are formed between a position crossing the outer periphery of the peripheral wall and the flange portion on an extension of the rotating shaft in a radial direction from an end portion of the stator, and are constituted by a plurality of ribs.Type: GrantFiled: December 13, 2019Date of Patent: June 4, 2024Assignee: Hitachi Astemo, LtdInventors: Toshiki Takahashi, Takuya Miyagi, Hayato Fujita, Yuichiro Baba
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Patent number: 11855509Abstract: An object of the present invention is to provide a sealing member that provides high sealability in a coolant flow path. A rotating electrical machine includes a stator core around which a winding is wound, a stator frame that supports the stator core, a housing that is disposed outside the stator frame and forms a flow path space with the stator frame, and a sealing member that is disposed between the stator frame and the housing. The housing includes a mounting portion on which the sealing member is mounted. The sealing member includes a base portion that is in contact with the housing and the stator frame, and an attachment portion that protrudes from the base portion and is inserted to the mounting portion of the housing.Type: GrantFiled: July 10, 2020Date of Patent: December 26, 2023Assignee: HITACHI ASTEMO, LTD.Inventors: Hayato Fujita, Yuichiro Baba, Ryoji Kobayashi, Toshiki Takahashi, Takuya Miyagi, Kenji Nakayama
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Patent number: 11837916Abstract: An object of the present invention is to reduce stress caused by press-fitting of a shaft on an outer edge portion side of a rotor. A rotor for a rotating electric machine includes a shaft and a rotor iron core, the shaft coupled to the rotor iron core. The rotor iron core includes: an outer edge portion housing a magnet; an inner edge portion coupled to the shaft; and a rib portion having a lightening portion that is formed inside between the outer edge portion and the inner edge portion. The rib portion includes: a through-hole forming portion connected to the outer edge portion and having a through-hole inside; and a bridge portion connecting the through-hole forming portion and the inner edge portion. The bridge portion includes: a second bridge portion connected to the through-hole forming portion and protruding outward; and a first bridge portion having one end connected to the inner edge portion and another end connected to the second bridge portion.Type: GrantFiled: December 13, 2019Date of Patent: December 5, 2023Assignee: Hitachi Astemo, Ltd.Inventors: Takuya Miyagi, Toshiki Takahashi, Hayato Fujita, Yuichiro Baba, Kenji Nakayama
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Publication number: 20230318067Abstract: A battery unit temperature management device may include a battery unit that can be charged and discharged, a heater that operates due to electricity supply from the battery unit and heats a heat exchange medium that exchanges heat with the battery unit, a changing structure that changes a heat transfer capacity between the battery unit and the heat exchange medium, and a controller that controls the heating of the heat exchange medium by the heater and the change of the heat transfer capacity by the changing structure. When a temperature Tw of the heat exchange medium does not reach a first temperature which is equivalent to a temperature of the battery unit while the heat exchange medium is heated by the heater, the controller may make the heat transfer capacity smaller than that when the temperature of the heat exchange medium has reached the first temperature.Type: ApplicationFiled: March 27, 2023Publication date: October 5, 2023Applicant: Mazda Motor CorporationInventors: Takashi YAMAMOTO, Toshiki TAKAHASHI
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Publication number: 20230318081Abstract: A battery unit temperature management device may include a plurality of battery units, a flow channel through which a heat exchange medium circulates so as to pass through the battery units, a plurality of changing structures provided to correspond to the battery units to make changes of heat transfer capacities between the battery units and the heat exchange medium, and a controller that controls, for each of the battery units, the change of the heat transfer capacity, by using each of the changing structures to reduce the temperature difference among the battery units.Type: ApplicationFiled: March 24, 2023Publication date: October 5, 2023Applicant: Mazda Motor CorporationInventors: Takashi YAMAMOTO, Toshiki TAKAHASHI
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Patent number: 11542900Abstract: A battery temperature adjusting device for a vehicle on which a battery is mounted, the battery being a lithium ion battery disposed near a powertrain unit inside an engine bay, is provided. The device includes a first air duct provided to an intake passage configured to lead intake air to a combustion chamber of an engine, a second air duct provided to the intake passage and provided with an intake opening that opens toward a space between the powertrain unit and the battery, an intake-air-amount adjusting part, and a controller configured to acquire an ambient temperature of the powertrain unit. The controller increases a ratio of the second intake air amount relative to the sum of the first intake air amount and the second intake air amount, when the ambient temperature exceeds a first threshold temperature, compared with when the ambient temperature is below the first threshold temperature.Type: GrantFiled: November 24, 2020Date of Patent: January 3, 2023Assignee: Mazda Motor CorporationInventors: Yusuke Koike, Yusuke Marutani, Toshiki Takahashi, Wataru Masuda, Takafumi Tanehira, Yuma Yamaga
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Publication number: 20220352786Abstract: An object of the present invention is to promote weight reduction while improving torsional stiffness of a motor case of a rotary electric machine. A motor case accommodates a stator, a rotor facing an inner periphery of the stator, and a rotating shaft coupled to the rotor. The motor case includes a peripheral wall which is formed in a tubular shape and has a space accommodating the stator and the rotating shaft on an inside, a flange portion which is formed at one end of the peripheral wall and is coupled to an outside, and damping ribs which are formed at an outer periphery of the peripheral wall, are formed between a position crossing the outer periphery of the peripheral wall and the flange portion on an extension of the rotating shaft in a radial direction from an end portion of the stator, and are constituted by a plurality of ribs.Type: ApplicationFiled: December 13, 2019Publication date: November 3, 2022Applicant: Hitachi Astemo, Ltd.Inventors: Toshiki TAKAHASHI, Takuya MIYAGI, Hayato FUJITA, Yuichiro BABA
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Publication number: 20220247255Abstract: An object of the present invention is to provide a sealing member that provides high sealability in a coolant flow path. A rotating electrical machine includes a stator core around which a winding is wound, a stator frame that supports the stator core, a housing that is disposed outside the stator frame and forms a flow path space with the stator frame, and a sealing member that is disposed between the stator frame and the housing. The housing includes a mounting portion on which the sealing member is mounted. The sealing member includes a base portion that is in contact with the housing and the stator frame, and an attachment portion that protrudes from the base portion and is inserted to the mounting portion of the housing.Type: ApplicationFiled: July 10, 2020Publication date: August 4, 2022Applicant: HITACHI ASTEMO, LTD.Inventors: Hayato FUJITA, Yuichiro BABA, Ryoji KOBAYASHI, Toshiki TAKAHASHI, Takuya MIYAGI, Kenji NAKAYAMA
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Publication number: 20220223927Abstract: An object of the present invention is to solve the problem of a decomposed product of cyclic ester that causes cycle deterioration and storage deterioration of a lithium ion secondary battery. As a solution for the problem, the lithium ion secondary battery includes; a positive electrode; a negative electrode using a graphite-based carbon material as a negative electrode active material; an electrolyte in which lithium salt is dissolved in a nonaqueous solvent containing cyclic ester; and either a barrier layer 15 configured to inhibit contact of the cyclic ester with the negative electrode or a capturing material configured to trap a decomposed product of the cyclic ester generated at the negative electrode.Type: ApplicationFiled: May 14, 2020Publication date: July 14, 2022Inventors: Wataru MASUDA, Teruhiko HANAOKA, Toshiki TAKAHASHI, Susumu MINEOI, Hiroyuki SAKAI, Hiroki FUJITA
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Publication number: 20220037940Abstract: An object of the present invention is to reduce stress caused by press-fitting of a shaft on an outer edge portion side of a rotor. A rotor for a rotating electric machine includes a shaft and a rotor iron core, the shaft coupled to the rotor iron core. The rotor iron core includes: an outer edge portion housing a magnet; an inner edge portion coupled to the shaft; and a rib portion having a lightening portion that is formed inside between the outer edge portion and the inner edge portion. The rib portion includes: a through-hole forming portion connected to the outer edge portion and having a through-hole inside; and a bridge portion connecting the through-hole forming portion and the inner edge portion. The bridge portion includes: a second bridge portion connected to the through-hole forming portion and protruding outward; and a first bridge portion having one end connected to the inner edge portion and another end connected to the second bridge portion.Type: ApplicationFiled: December 13, 2019Publication date: February 3, 2022Applicant: Hitachi Astemo, Ltd.Inventors: Takuya MIYAGI, Toshiki TAKAHASHI, Hayato FUJITA, Yuichiro BABA, Kenji NAKAYAMA
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Publication number: 20210262424Abstract: A battery temperature adjusting device for a vehicle on which a battery is mounted, the battery being a lithium ion battery disposed near a powertrain unit inside an engine bay, is provided. The device includes a first air duct provided to an intake passage configured to lead intake air to a combustion chamber of an engine, a second air duct provided to the intake passage and provided with an intake opening that opens toward a space between the powertrain unit and the battery, an intake-air-amount adjusting part, and a controller configured to acquire an ambient temperature of the powertrain unit. The controller increases a ratio of the second intake air amount relative to the sum of the first intake air amount and the second intake air amount, when the ambient temperature exceeds a first threshold temperature, compared with when the ambient temperature is below the first threshold temperature.Type: ApplicationFiled: November 24, 2020Publication date: August 26, 2021Inventors: Yusuke Koike, Yusuke Marutani, Toshiki Takahashi, Wataru Masuda, Takafumi Tanehira, Yuma Yamaga
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Publication number: 20210202924Abstract: A lithium-ion battery device comprises a housing, a battery cell stored inside the housing, and an adjacent member provided adjacently to and on a rearward side, in a vehicle longitudinal direction, of the battery cell. The battery cell comprises a cell case, an electrode body stored inside the cell case, and a pair of terminals. The cell case includes a first main face and a second main face which face to each other in the vehicle longitudinal direction. At least two gap-forming portions which respectively have a smaller area than the second main face and have a specified thickness of the vehicle longitudinal direction are arranged between the second main face and the adjacent member. The two gap-forming portions are provided to be spaced apart from each other in an inter-terminal direction of the battery cell.Type: ApplicationFiled: September 17, 2020Publication date: July 1, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Wataru MASUDA, Teruhiko HANAOKA, Toshiki TAKAHASHI, Chikara KAWAMURA, Masanori HONDA
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Patent number: 9166457Abstract: The disclosure discloses a rotating electrical machine that is integrally formed with a reduction device having an input shaft to which a roller gear cam is provided and an output shaft to which cam followers configured to sequentially engage with the roller gear cam is provided on an outer periphery, extending along a direction orthogonal to the input shaft, and is configured to employ one of a field system or an armature as a rotator and the other of the field system or the armature as a stator, including a rotating shaft that is fixed to the rotator and integrally formed as a single shaft with the input shaft of the reduction device.Type: GrantFiled: January 11, 2012Date of Patent: October 20, 2015Assignees: KABUSHIKI KAISHA YASKAWA DENKI, SANKYO SEISAKUSHO CO.Inventors: Toshiyuki Yamagishi, Nobukazu Miyauchi, Kenji Matsuura, Toshinao Kato, Atsushi Oishi, Toshiki Takahashi
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Publication number: 20140301000Abstract: A first battery pack (252-1) comprises a battery module (314) which includes a plurality of battery cells (310) connected in series between a positive terminal (352) and a negative terminal (353), ground-fault resistances (45) each of which appears between a grounding point (23) and an inter-battery connection point (311) between adjoining ones of the battery cells (310), a booster unit (11) which is provided to the positive terminal (352) and outputs boosted electric potential acquired by boosting high electric potential of the battery module (314), a protective resistance (25) and a ground fault detecting resistance (27) which are provided in series between a third connection point (19) (on the output side of the booster unit (11)) and the grounding point (23), and a ground fault detecting unit (41) which detects the presence/absence of a ground fault in the battery module (314) based on the result of comparison between preset threshold electric potential (Vref) and electric potential of an inter-resistanceType: ApplicationFiled: December 27, 2011Publication date: October 9, 2014Applicant: Hitachi, Ltd.Inventors: Toshiki Takahashi, Shin Yamauchi
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Publication number: 20140117762Abstract: An objective of the invention is to deal with difference of the internal resistance of batteries. A battery system (1) including a plurality of battery modules (3) connected, wherein the higher the temperature of the location where the battery module (3) is located becomes, the larger the resistance value of a distribution cable (11) is made. In a chassis (2), the distribution cable (11) located where the temperature is high is made longer and the distribution cable (11) located where the temperature is low is made shorter. More specifically, the distribution cable (11) connected to a battery group (4) located on the upper part of the chassis is made longer and the distribution cable (11) connected to a battery group (4) located on the lower part of the chassis is made shorter. Further, the length of the distribution cable (11) may be adjusted by arranging the output terminal (21) on the lowermost part of the chassis (2).Type: ApplicationFiled: June 20, 2011Publication date: May 1, 2014Applicant: Hitachi, Ltd.Inventors: Shin Yamauchi, Hiromu Kakuya, Motoo Futami, Toshiki Takahashi, Tsutomu Sudo
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Patent number: 8608902Abstract: A vertical plasma processing apparatus for performing a plasma process on a plurality of target objects together at a time includes an activation mechanism configured to turn a process gas into plasma. The activation mechanism includes a vertically elongated plasma generation box attached to a process container at a position corresponding to a process field and confining a plasma generation area airtightly communicating with the process field, an ICP electrode disposed outside the plasma generation box and extending in a longitudinal direction of the plasma generation box, and an RF power supply connected to the ICP electrode. The ICP electrode includes a separated portion separated from a wall surface of the plasma generation box by a predetermined distance.Type: GrantFiled: January 12, 2010Date of Patent: December 17, 2013Assignee: Tokyo Electron LimitedInventors: Kohei Fukushima, Toshiki Takahashi, Hiroyuki Matsuura, Yutaka Motoyama, Kazuya Yamamoto
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Publication number: 20130260196Abstract: Provided is a battery system which can easily identify a portion where a fuse is blown when the fuse is blown even in a large-scale battery system where a plurality of batteries are connected in series. The battery system includes a battery pack including a series circuit where a plurality of battery modules are connected to each other in series, the battery module including a fuse which is connected in series to a battery cell, and a light emitting diode which is connected in parallel to the fuse and has an anode thereof connected to a positive pole side of the battery cell; and a switching element which is connected in parallel to the series circuit.Type: ApplicationFiled: February 21, 2013Publication date: October 3, 2013Applicant: HITACHI, LTD.Inventors: Toshiki TAKAHASHI, Kenji TAKEDA, Shin YAMAUCHI
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Publication number: 20130260191Abstract: A battery pack in which an increase in size is restrained even if the battery pack includes plural battery modules with fuses is to be provided. In order to solve the foregoing problem, a battery pack according to the invention includes at least two or more battery modules, each battery module having a battery cell and a first fuse connected in series with the battery cell, the battery cell and the first fuse being housed in a casing. A positive electrode terminal provided in one battery module and a negative electrode terminal provided in another battery module are connected to each other via a second fuse. The second fuse has a higher rated voltage than the first fuse.Type: ApplicationFiled: February 21, 2013Publication date: October 3, 2013Applicant: HITACHI, LTD.Inventors: Toshiki TAKAHASHI, Kenji TAKEDA
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Publication number: 20130257440Abstract: Provided is a battery system which can ensure high safety even when the battery system is constructed using a mechanical relay. The battery system includes: a battery module where a plurality of battery cells are connected to each other in series; a switching circuit which is connected to the battery module in series; a control unit which controls the switching circuit; and a welding diagnosis circuit which diagnoses welding of the switching circuit, wherein the switching circuit is constituted by connecting a first relay switch and a second relay switch in series, and the welding diagnosis circuit includes a voltage measuring device which measures a voltage between the first relay switch and the second relay switch.Type: ApplicationFiled: February 19, 2013Publication date: October 3, 2013Applicant: HITACHI, LTD.Inventors: Toshiki TAKAHASHI, Motoo FUTAMI, Shin YAMAUCHI