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公开(公告)号：US20230305078A1
公开(公告)日：2023-09-28
申请号：US18114373
申请日：2023-02-27
Applicant: HONDA MOTOR CO., LTD.
Inventor： Ryota KITAMOTO
CPC classification number: G01R31/52 , H01M8/249 , H01M2250/20
Abstract: A ground fault determination system includes an acquisition unit that acquires the degree of deterioration of a plurality of fuel cell stacks connected in parallel with each other and connected to an inverter, a ground fault detection unit that detects insulation resistance between the inverter and the plurality of fuel cell stacks, a first determination unit that determines, when the deterioration of each fuel cell stack has not yet progressed, whether there is a ground fault with all the fuel cell stacks all at once, and a second determination unit that determines in turn, when the deterioration of at least one fuel cell stack has progressed, whether there is a ground fault with each fuel cell stack.
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公开(公告)号：US20230395316A1
公开(公告)日：2023-12-07
申请号：US18199621
申请日：2023-05-19
Applicant: HONDA MOTOR CO., LTD.
Inventor： Yusuke SHINDO , Ryota KITAMOTO
CPC classification number: H01F27/38 , H01F27/263 , H01F3/14
Abstract: An inner core portion includes an inner gap having a length in the first direction larger than that of the outer gap in a center in the first direction. A control device is configured to switch between a one-phase operation of causing a current to flow through any one of the first outer coil, the second outer coil, and the inner coil to operate, a two-phase operation of causing a current to flow through any two of the first outer coil, the second outer coil, and the inner coil to operate, and a three-phase operation of causing a current to flow through all of the first outer coil, the second outer coil, and the inner coil to operate. The control device selects the inner coil in the one-phase operation.
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公开(公告)号：US20190356235A1
公开(公告)日：2019-11-21
申请号：US16405013
申请日：2019-05-07
Applicant: HONDA MOTOR CO., LTD.
Inventor： Yusuke SHINDO , Jun KATO , Ryota KITAMOTO , Shinnosuke SATO , Toshiki IKEDA , Takanori SAKAGUCHI , Kosuke NISHIYAMA , Takaaki FUSHIMI
Abstract: An electric power conversion device is provided with a case (60) including a mounting portion (61) extending along a plane defined by a first direction and a second direction that are orthogonal to each other, and a side wall (62) provided along a periphery of the mounting portion, a primary side connection portion (23) and a secondary side connection portion (27) provided on the case, a plurality of reactors arranged along the second direction in the case and connected in parallel to one another, and a switching unit including a plurality of switching devices positioned in the case on one side of the reactors in the first direction, arranged along the first direction, and respectively connected to the reactors.
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公开(公告)号：US20190173108A1
公开(公告)日：2019-06-06
申请号：US16312648
申请日：2016-06-24
Applicant: HONDA MOTOR CO., LTD.
Inventor： Ryota KITAMOTO
IPC: H01M8/04858 , H01M8/04537 , H01M8/04119 , H01M8/04492
Abstract: A power supply device includes a power supply, a conversion unit performing voltage conversion on electric power to be supplied from the power supply, and a control unit generating a first control signal for inputting or outputting a target voltage or a target current to and from the conversion unit by a feedback loop, and controlling the conversion unit based on the first control signal and a second control signal for detecting a state of the power supply, generated outside the feedback loop. The control unit sets a specific parameter of the second control signal based on a feedforward term based on the output of the power supply and a feedback term in which the specific parameter included in at least one of electric power output from the power supply and input into the conversion unit and electric power output from the conversion unit, is a feedback component.
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公开(公告)号：US20190058411A1
公开(公告)日：2019-02-21
申请号：US16079187
申请日：2016-02-24
Applicant: HONDA MOTOR CO., LTD.
Inventor： Ryota KITAMOTO
Abstract: A power supply device includes: a power supply; a conversion module including a plurality of conversion units configured to perform voltage conversion of power supplied by the power supply, the plurality of conversion units being electrically connected in parallel to each other; and a change unit that an operation number, which is the number of the conversion units performing the voltage conversion. The change unit prohibits a change to an operation number in which current imbalance occurs between the conversion units performing the voltage conversion.
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Patent Agency Ranking
公开(公告)号：US20220311271A1
公开(公告)日：2022-09-29
申请号：US17676255
申请日：2022-02-21
Applicant: HONDA MOTOR CO., LTD.
Inventor： Ryota KITAMOTO
Abstract: Provided is an external power feeder and an external power supply system that make it possible to continuously supply power to an external load even at a location without an electrical facility.
An external power feeder connectable to a plurality of power supply sources includes: a plurality of connection ports which are respectively in connection with the plurality of power supply sources; a connection state acquisition unit that acquires a connection state of each of the plurality of connection ports with the power supply source; a power supply state acquisition unit that acquires a power supply state from each of the plurality of power supply sources; and a switching unit that switches from power supply from one power supply source to power supply from one other power supply source, among the connected power supply sources, based on a power supply state of the one power supply source.-
公开(公告)号：US20220310318A1
公开(公告)日：2022-09-29
申请号：US17680990
申请日：2022-02-25
Applicant: HONDA MOTOR CO., LTD.
Inventor： Ryota KITAMOTO
Abstract: A control device for a power conversion device using a multi-phase magnetic coupling reactor is provided. The multi-phase magnetic coupling reactor including: a first outer coil; a second outer coil; an inner coil; and a core. Directions of magnetic fluxes generated in the first outer coil, the second outer coil, and the inner coil are opposite to each other in any combination. The control device is configured to switch among a one-phase operation, a two-phase operation, and a three-phase operation. The control device is configured to select two phases of the first outer coil and the second outer coil in the two-phase operation, and the control device is configured to select one of the first outer coil and the second outer coil in the one-phase operation before the two-phase operation or a one-phase operation after the two-phase operation.
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公开(公告)号：US20210313600A1
公开(公告)日：2021-10-07
申请号：US17353829
申请日：2021-06-22
Applicant: HONDA MOTOR CO.,LTD.
Inventor： Akira YAMADA , Nobutaka NAKAJIMA , Ryota KITAMOTO , Takamasa MORI
IPC: H01M8/04082 , H01M8/04223 , H01M8/04828 , H01M50/244 , H01M8/04746
Abstract: A preservation system comprises: a fuel cell; and an oxidant agent supply passage, positioned inside the power supply device, for supplying the oxidant agent to the fuel cell, and (i) a piping positioned outside the power supply device, and (ii) a connecting portion for oxidant agent for connecting the oxidant agent supply passage, to preserve the power supply device configured to be detachable to a work machine. The preservation system comprises: a preservation section for preserving the power supply device detached from the work machine; a purge gas conserving section for conserving a purge gas in order for purging the fuel cell and the oxidant agent supply passage; a purge gas piping, being a piping positioned outside the power supply device; and a purge gas flow rate regulation section for regulating flow rate of the purge gas supplied to the power supply device.
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公开(公告)号：US20210296666A1
公开(公告)日：2021-09-23
申请号：US17342561
申请日：2021-06-09
Applicant: HONDA MOTOR CO.,LTD.
Inventor： Ryota KITAMOTO , Nobutaka NAKAJIMA , Akira YAMADA
IPC: H01M8/04537 , B60L58/33
Abstract: A control device for controlling a power supply device that supplies power to a work machine includes a load amount acquisition unit configured to acquire load information indicating a load amount of the work machine during a work period of the work machine, and an output condition determination unit configured to determine an output rate of a fuel cell based on the load amount indicated by the load information during the work period. The power supply device includes the fuel cell. The work period may be a period starting when information indicating start of work of the work machine is received and ending when information indicating end of the work of the work machine is received.
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公开(公告)号：US20240116384A1
公开(公告)日：2024-04-11
申请号：US18378435
申请日：2023-10-10
Applicant: HONDA MOTOR CO., LTD.
Inventor： Ryota KITAMOTO
Abstract: A power supply system for moving body, includes, a power generation unit, a power storage unit, a converter provided between the power generation unit and the power storage unit, the converter including a power storage unit-side converter terminal and a power generation unit-side converter terminal, an external connection terminal configured to electrically connect to an external device, a first switching unit configured to switch between connected and disconnected of the external connection terminal, the power storage unit, and the power storage unit-side converter terminal, a second switching unit configured to switch between connected and disconnected of the power generation unit-side converter terminal and the external connection terminal, a third switching unit configured to switch between connected and disconnected of the power generation unit-side converter terminal and the power generation unit, and a control device configured to control the first switching unit, the second switching unit, and the third switching unit.
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