公开(公告)号：US12191541B2

公开(公告)日：2025-01-07

申请号：US17019992

申请日：2020-09-14

Applicant: ENEOS Corporation

Inventor： Akihiko Fukunaga

IPC: F17C5/06 ,  F17C13/02 ,  H01M8/04082 ,  H01M8/0438 ,  H01M8/04746

Abstract: According to one aspect of the present invention, a method for diagnosing failure in a pressure gauge of a hydrogen filling system includes filling a fuel cell vehicle powered by hydrogen fuel with the hydrogen fuel from an accumulator, in which the hydrogen fuel is accumulated, via a dispenser; and acquiring pressure values measured by a plurality of pressure gauges disposed at different positions in a flow passage of the hydrogen fuel between the accumulator and an outlet of the dispenser at timing when a flow rate of the hydrogen fuel to be filled at a stage close to an end of the filling becomes a threshold value or less, determining whether or not a deviation between the pressure values is within a threshold value on the basis of acquired pressure values, and outputting a determination result.

公开(公告)号：US12181108B2

公开(公告)日：2024-12-31

申请号：US17732049

申请日：2022-04-28

Applicant: ENEOS Corporation

Inventor： Akihiko Fukunaga ,  Tatsuya Rembutsu ,  Koki Sakamoto

IPC: F17C13/02 ,  B67D7/04 ,  B67D7/32 ,  F17C5/00 ,  F17C5/06 ,  G01K3/08 ,  G01L19/00

Abstract: A hydrogen gas filling device includes a reception circuit, a difference calculation circuit, a filling speed calculation circuit, an accumulator, and a filing machine. The reception circuit is configured to receive, from a vehicle equipped with a tank to be filled with hydrogen gas and powered by the hydrogen gas, a value of a parameter of the vehicle. The difference calculation circuit is configured to calculate a difference between a predetermined value and the value of the parameter received from the vehicle. The filling speed calculation circuit is configured to calculate a filling speed of the hydrogen gas depending on the difference. The accumulator is configured to accumulate hydrogen gas. The filling machine is configured to fill the tank with the hydrogen gas from the accumulator at the calculated filling speed. A hydrogen gas filling method includes the operations noted above.

公开(公告)号：US11754227B2

公开(公告)日：2023-09-12

申请号：US17049172

申请日：2019-04-26

Applicant: ENEOS CORPORATION

Inventor： Tatsuya Rembutsu ,  Akihiko Fukunaga ,  Toshio Tezuka ,  Eiji Negishi

IPC: F17C5/06 ,  F17C13/02

CPC classification number: F17C5/06 ,  F17C13/025 ,  F17C2221/012 ,  F17C2250/043 ,  F17C2265/065

Abstract: A control device of a gas charging device controls opening/closing of a control valve so that pressure increase rate of gas pressure in a tank when gas charging to the tank increases at a reference increase rate determined in advance. The control device, when gas charge to the tank begins, controls pressure increase rate at a high increase rate higher than the reference increase rate. After the difference between gas pressure in the tank when gas charging is performed at the high increase rate and gas pressure in the tank when the charging is performed at the reference increase rate has reached a predetermined pressure difference, the control device controls the opening/closing of the control valve so that gas charge to the tank is performed at the reference increase rate.

公开(公告)号：US11916266B2

公开(公告)日：2024-02-27

申请号：US17212434

申请日：2021-03-25

Applicant: ENEOS Corporation

Inventor： Akihiko Fukunaga ,  Toshio Tezuka ,  Tadashi Seike ,  Hirofumi Nishio ,  Daisaku Tateishi

IPC: H01M8/04089 ,  C01B3/32 ,  H01M8/04082 ,  H01M8/0606 ,  B60S5/02 ,  B60L50/70

CPC classification number: H01M8/04089 ,  B60S5/02 ,  C01B3/32 ,  H01M8/04201 ,  H01M8/0606 ,  B60L50/70 ,  C01B2203/1604 ,  C01B2203/1609 ,  H01M2250/20 ,  Y02T90/40

Abstract: An operation method is provided for a hydrogen production apparatus that is disposed in a hydrogen station and produces hydrogen gas to be supplied to a fuel cell vehicle (FCV) arriving at the hydrogen station. The operation method includes starting up a hydrogen production apparatus up to a first operation load ratio preset for a rated operation. The operation method includes increasing an operation load of the hydrogen production apparatus to a second operation load ratio, which is larger than the first operation load ratio, at first timing associated with an arrival of the FCV, and decreasing the operation load of the hydrogen production apparatus to a third operation load ratio, which is smaller than the second operation load ratio, at second timing associated with a completion of hydrogen filling into the FCV.

公开(公告)号：US11346503B2

公开(公告)日：2022-05-31

申请号：US17097469

申请日：2020-11-13

Applicant: ENEOS Corporation

Inventor： Akihiko Fukunaga ,  Tatsuya Rembutsu ,  Koki Sakamoto

IPC: F17C13/02 ,  B67D7/04 ,  F17C5/00 ,  B67D7/32 ,  F17C5/06 ,  G01K3/08 ,  G01L19/00

Abstract: According to one aspect of the present invention, a hydrogen gas filling method includes receiving, from a vehicle equipped with a tank to be filled with hydrogen gas and powered by the hydrogen gas, a temperature of the tank before a start of filling; calculating a difference between a preset maximum temperature and the temperature of the tank; calculating a filling speed of the hydrogen gas depending on the difference; and filling the hydrogen gas from an accumulator in which the hydrogen gas is accumulated into the tank at the filling speed calculated via a measuring machine.

公开(公告)号：US12148961B2

公开(公告)日：2024-11-19

申请号：US18527824

申请日：2023-12-04

Applicant: ENEOS CORPORATION

Inventor： Akihiko Fukunaga ,  Toshio Tezuka ,  Tadashi Seike ,  Hirofumi Nishio ,  Daisaku Tateishi

IPC: H01M8/04089 ,  B60L50/70 ,  B60S5/02 ,  C01B3/32 ,  H01M8/04082 ,  H01M8/0606

Abstract: A hydrogen production supply system that produces hydrogen gas to be supplied to a hydrogen storage tank, the hydrogen production supply system including a control circuit configured to control an operation load ratio of the hydrogen production apparatus to a predetermined operation load ratio, to increase the operation load ratio of the hydrogen production apparatus to a first operation load ratio larger than the predetermined operation load ratio at first timing, and to decrease the operation load ratio of the hydrogen production apparatus to the predetermined operation load ratio from the first load operation ratio at second timing, wherein an increase in the operation load ratio at the first timing takes precedence over a decrease in the operation load ratio at the second timing.

公开(公告)号：US11754226B2

公开(公告)日：2023-09-12

申请号：US17017132

申请日：2020-09-10

Applicant: ENEOS Corporation

Inventor： Akihiko Fukunaga ,  Toshio Tezuka ,  Tatsuya Rembutsu ,  Kouki Sakamoto

IPC: F17C5/06 ,  B67D7/04

CPC classification number: F17C5/06 ,  B67D7/04 ,  F17C2221/012 ,  F17C2223/0123 ,  F17C2227/0157 ,  F17C2250/032 ,  F17C2250/0443 ,  F17C2265/065

Abstract: According to one aspect of the present invention, a hydrogen fuel filling system includes a first flow passage through which hydrogen fuel supplied from a pressure accumulator that accumulates hydrogen fuel under pressure passes; a second flow passage through which hydrogen fuel supplied from the pressure accumulator passes, and which is arranged in parallel with the first flow passage; a switching valve that switches flow passages selectively from one of the first and second flow passages to another, or that switches flow passages between one and both of the first and second flow passages; and a control circuit that controls opening/closing of the switching valve, wherein a fuel cell vehicle using hydrogen fuel as a power source is filled with hydrogen fuel while switching the flow passages by the switching valve during supply from the pressure accumulator.