Patents by Inventor Tomohiro UMINO
Tomohiro UMINO 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: 11516949Abstract: A power converter (100) includes a power converter circuit (1), a cooler (2), and a cover member (3). The power converter circuit is configured to convert input electric power into DC power or AC power. The power converter circuit is placed on the cooler. The cooler is configured to cool the power converter. The power converter circuit is housed between the cooler and the cover member. The cooler (2) includes a main body (20), a coolant flow passage (21), and a coolant input/output portion (22). The coolant flow passage is formed inside the main body. A coolant is circulatable through the coolant flow passage. The coolant input/output portion is coupled to the coolant flow passage. The coolant input/output portion includes a coolant introduction pipe (22a) and a coolant discharge pipe (22b). The coolant introduction pipe introduces the coolant from outside the cooler. The coolant discharge pipe discharges the coolant to outside the cooler. The coolant input/output portion (22) is joined to the main body.Type: GrantFiled: March 13, 2018Date of Patent: November 29, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Tomohiro Umino, Soichi Ishii
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Publication number: 20220041162Abstract: A vehicle control method including: setting a target acceleration based on a distance to a preceding vehicle or an obstacle and accelerating an own vehicle based on the target acceleration without relying on a driver's operation. Then, the vehicle control method including: calculating an acceleration limit which is an acceleration at which a relative distance to the preceding vehicle or the obstacle at a time when a preset acceleration limiting time has passed from a start of the acceleration is equal to or longer than a reference relative distance and a relative vehicle speed to the preceding vehicle or the obstacle at the time when the preset acceleration limiting time has passed from the start of the acceleration is equal to or lower than a reference relative vehicle speed, and accelerating the own vehicle at the acceleration limit when the target acceleration exceeds the acceleration limit.Type: ApplicationFiled: September 25, 2018Publication date: February 10, 2022Applicant: NISSAN MOTOR CO., LTD.Inventors: Hiroshi ARITA, Tetsunobu MORITA, Yuuya KOGURE, Yusuke NAKAMURA, Takeshi OHNO, Tomohiro UMINO
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Publication number: 20210029851Abstract: A power converter includes a power converter circuit, a cooler, and a cover member. The power converter circuit is configured to convert input electric power into DC or AC power and is placed on the cooler configured to cool the power converter. The power converter circuit is housed between the cooler and the cover member. The cooler includes a main body, a coolant flow passage, and a coolant input/output portion. The coolant flow passage through which a coolant is circulatable is formed inside the main body. The coolant input/output portion is coupled to the coolant flow passage and includes a coolant introduction pipe that introduces the coolant from outside the cooler and a coolant discharge pipe that discharges the coolant to outside the cooler. The coolant input/output portion is joined to the main body. The joined part has a joining strength lower than a strength of the main body.Type: ApplicationFiled: March 13, 2018Publication date: January 28, 2021Applicant: Nissan Motor Co., Ltd.Inventors: Tomohiro UMINO, Soichi ISHII
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Patent number: 10617044Abstract: An in-vehicle power conversion device includes a drive unit, a casing and a plurality of busbars. The drive unit converts and transmits electric power. The casing includes electrical input-output parts and a main body. The main body includes a housing portion that houses the drive unit, and a lid body that closes the housing portion. The busbars electrically connect the drive unit and the electrical input-output parts of the casing to and from which electric power is inputted and outputted. The electrical input-output parts are routed outside of the casing. The busbars have heat-dissipating portions that are arranged along the casing to transfer heat to the casing outside of the housing portion.Type: GrantFiled: April 28, 2016Date of Patent: April 7, 2020Assignee: Nissan Motor Co., Ltd.Inventor: Tomohiro Umino
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Publication number: 20200068749Abstract: A cooling structure is provided for a power conversion device such as an inverter. The cooling structure has a power converter, a cooler and a fixing bolt. The cooler has a refrigerant channel through which refrigerant flowing into from an exterior flows. The fixing bolt secures the power converter to the cooler in a state in which the power converter and the refrigerant channel are disposed opposite each other. The refrigerant channel has a main pathway disposed opposite the power converter and through which refrigerant flows, and an expanded pathway having a channel that is expanded from the main pathway to a bolt end of the fixing bolt.Type: ApplicationFiled: May 8, 2017Publication date: February 27, 2020Inventors: Kimihiro ONO, Tomohiro UMINO
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Patent number: 10505427Abstract: A rotating electrical machine system integrally includes a rotating electrical machine housed in a first chamber of a housing and a semiconductor module housed in a second chamber of the housing and electrically coupled to the rotating electrical machine. The rotating electrical machine includes a stator secured to an inner circumference surface of the first chamber and a rotor rotatably disposed with respect to the stator. The rotating electrical machine system further includes a cooler disposed between a bottom portion of the second chamber and the semiconductor module to cool the semiconductor module and the stator by coolant that passes through an inside of the cooler.Type: GrantFiled: September 30, 2014Date of Patent: December 10, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Hirofumi Shimizu, Tomohiro Umino, Yasuyuki Kubota
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Publication number: 20190159367Abstract: An in-vehicle power conversion device includes a drive unit, a casing and a plurality of busbars. The drive unit converts and transmits electric power. The casing includes electrical input-output parts and a main body. The main body includes a housing portion that houses the drive unit, and a lid body that closes the housing portion. The busbars electrically connect the drive unit and the electrical input-output parts of the casing to and from which electric power is inputted and outputted. The electrical input-output parts are routed outside of the casing. The busbars have heat-dissipating portions that are arranged along the casing to transfer heat to the casing outside of the housing portion.Type: ApplicationFiled: April 28, 2016Publication date: May 23, 2019Inventor: Tomohiro UMINO
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Publication number: 20170294821Abstract: A rotating electrical machine system integrally includes a rotating electrical machine housed in a first chamber of a housing and a semiconductor module housed in a second chamber of the housing and electrically coupled to the rotating electrical machine. The rotating electrical machine includes a stator secured to an inner circumference surface of the first chamber and a rotor rotatably disposed with respect to the stator. The rotating electrical machine system further includes a cooler disposed between a bottom portion of the second chamber and the semiconductor module to cool the semiconductor module and the stator by coolant that passes through an inside of the cooler.Type: ApplicationFiled: September 30, 2014Publication date: October 12, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Hirofumi SHIMIZU, Tomohiro UMINO, Yasuyuki KUBOTA