公开(公告)号：US11799102B2

公开(公告)日：2023-10-24

申请号：US17182297

申请日：2021-02-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi Toida ,  Yusuke Nishida ,  Hiroyuki Tsunekawa ,  Masahiro Ito

IPC: H01M8/04223 ,  H01M8/04119 ,  H01M8/0432 ,  H01M8/04029 ,  H01M8/043 ,  H01M8/04694 ,  H01M8/04228 ,  H01M8/04955

CPC classification number: H01M8/04231 ,  H01M8/043 ,  H01M8/04029 ,  H01M8/0432 ,  H01M8/04179 ,  H01M8/04358 ,  H01M8/04694 ,  H01M8/04156 ,  H01M8/04228 ,  H01M8/04955 ,  H01M2250/20

Abstract: A fuel cell system includes: a fuel cell; a temperature acquisition unit that acquires a temperature at a specific position in a vehicle equipped with the fuel cell system; a purge unit that purges the fuel cell when an operation of the fuel cell is stopped; and a control unit that acquires the temperature at the specific position from the temperature acquisition unit at least once from when the fuel cell system is stopped until the fuel cell system is started again, and uses the temperature at the specific position to determine whether purging at a stop by the purge unit is necessary when the fuel cell system is stopped next.

公开(公告)号：US11621431B2

公开(公告)日：2023-04-04

申请号：US17076753

申请日：2020-10-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiro Ito ,  Masashi Toida ,  Hiroyuki Tsunekawa ,  Tsuyoshi Maruo

IPC: H01M8/04746 ,  H01M8/04082 ,  H01M8/04223 ,  H01M8/04089 ,  H01M8/04119 ,  H01M8/04701

Abstract: A fuel cell system includes a fuel cell, a hydrogen tank, a hydrogen supply passage connecting the hydrogen tank and the fuel cell, a cutoff valve configured to cut off circulation of hydrogen in the hydrogen supply passage, a detection unit configured to detect a start of filling of the hydrogen tank with hydrogen, and a purge controller configured to close the cutoff valve in a case where the fuel cell system is stopped and the detection unit detects the start of filling with hydrogen in a state in which purge processing of purging the in-cell hydrogen flow passage is to be executed, and to execute processing of purging the in-cell hydrogen flow passage by causing hydrogen remaining on a downstream side of the cutoff valve in a hydrogen flow in the hydrogen supply passage to flow in the in-cell hydrogen flow passage as the purge processing.

公开(公告)号：US09941532B2

公开(公告)日：2018-04-10

申请号：US14933410

申请日：2015-11-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi Toida ,  Yoshiaki Naganuma ,  Tomohiro Ogawa ,  Tsuyoshi Maruo

IPC: H01M8/00 ,  H01M8/04746 ,  H01M8/0432 ,  H01M8/04492 ,  H01M8/04302

CPC classification number: H01M8/04761 ,  H01M8/04302 ,  H01M8/0432 ,  H01M8/04514 ,  H01M8/04522

Abstract: An objection is to provide a technology by which a decline in the starting performance of a fuel cell system may be controlled in a low-temperature environment. A control method of a fuel cell system includes a temperature acquisition step of acquiring a temperature of the fuel cell at start-up of the fuel cell; and an exhaust gas control step of restricting, when the temperature of the fuel cell is below a predetermined value, a flow rate of an exhaust gas flowing into a flow path configuring portion that configures at least a part of a flow path of the exhaust gas of the fuel cell as compared to the flow rate of the exhaust gas flowing into the flow path configuring portion when the temperature of the fuel cell is equal to or less than the predetermined value.

公开(公告)号：US09899690B2

公开(公告)日：2018-02-20

申请号：US14929653

申请日：2015-11-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshiaki Naganuma ,  Tomohiro Ogawa ,  Tsuyoshi Maruo ,  Masashi Toida

IPC: H01M8/04119 ,  B60L11/18 ,  H01M8/04313 ,  H01M8/04746 ,  H01M8/04089

CPC classification number: H01M8/04156 ,  B60L1/003 ,  B60L3/0053 ,  B60L11/1881 ,  B60L11/1896 ,  B60L11/1898 ,  B60L2240/22 ,  B60L2240/642 ,  H01M8/04097 ,  H01M8/04164 ,  H01M8/04179 ,  H01M8/04313 ,  H01M8/04753 ,  H01M8/04761 ,  H01M2250/20 ,  Y02T90/32

Abstract: A method of discharging water from a mobile object, which includes a fuel cell, a gas-liquid separator, and a circulation pump, comprises: an inclined state detection step of detecting an inclined state of the mobile object with respect to a horizontal plane; a scavenging start step of starting to supply scavenging gas at a predetermined first supply flow rate to a gas flow path in the fuel cell, by driving the circulation pump; and a supply flow rate increase step of increasing, when the mobile object is in a predetermined inclined state in which an outlet of the gas flow path is directed upward against a direction of gravity, a rotational speed of the circulation pump so that the supply flow rate of the scavenging gas is increased to a second supply flow rate higher than the first supply flow rate after a predetermined period from starting to supply the scavenging gas.

公开(公告)号：US09893371B2

公开(公告)日：2018-02-13

申请号：US15186614

申请日：2016-06-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takashi Yamada ,  Masashi Toida

IPC: H01M8/04223 ,  H01M8/04119 ,  H01M8/04228 ,  H01M8/04007 ,  H01M8/04082 ,  H01M8/04701 ,  H01M8/04746 ,  H01M8/04303 ,  H01M8/0432 ,  H01M8/04029 ,  H01M8/04089

CPC classification number: H01M8/04179 ,  H01M8/04007 ,  H01M8/04029 ,  H01M8/04097 ,  H01M8/04164 ,  H01M8/04201 ,  H01M8/04223 ,  H01M8/04228 ,  H01M8/04303 ,  H01M8/0432 ,  H01M8/04365 ,  H01M8/04373 ,  H01M8/04731 ,  H01M8/04753 ,  H01M2250/20 ,  Y02T90/32

Abstract: There is provided a technique to suppress water from remaining in a fuel cell and auxiliary machines after a stop of operation of a fuel cell system. A fuel cell system 100 includes a controller 10, a fuel cell 20, a cathode gas supply discharge system 30 and an anode gas supply discharge circulation system 50. The controller 10 serves as a termination process controller 15 to control a termination process that is performed when operation of the fuel cell 20 is to be stopped. In the termination process, the termination process controller 15 performs a quick warm-up operation to quickly increase the temperature of the fuel cell 20, subsequently performs a standard warm-up operation that has a lower temperature rise rate of the fuel cell 20 than that in the quick warm-up operation, and then performs a purging process to purge the fuel cell 20.

公开(公告)号：US11322760B2

公开(公告)日：2022-05-03

申请号：US16884250

申请日：2020-05-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi Toida ,  Tsuyoshi Maruo ,  Hiroyuki Tsunekawa

IPC: H01M8/04 ,  H01M8/04303 ,  H01M8/04119 ,  H01M8/0438 ,  H01M8/04223 ,  H01M8/04746 ,  H01M8/04228

Abstract: A fuel cell system comprises: a gas-liquid separator separating exhaust gas of a fuel cell stack into a liquid component and a gas component and storing liquid water of the liquid component; a circulation pipe; a drain pipe discharging the liquid water; and a drain valve opening and closing the drain pipe. In an end scavenging process that is executed when operation of the fuel cell system is finished, the control unit opens the drain valve when a valve opening condition for the drain valve is satisfied. The valve opening condition is set such that an amount of the liquid water stored in the gas-liquid separator at the time the drain valve is opened in the end scavenging process is larger than an amount of the liquid water stored in the gas-liquid separator at the time the drain valve is opened during normal operation of the fuel cell system.

公开(公告)号：US10665876B2

公开(公告)日：2020-05-26

申请号：US15831766

申请日：2017-12-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomio Yamanaka ,  Masashi Toida ,  Hiroyuki Imanishi ,  Seiichi Tanaka

IPC: H01M8/04089 ,  H01M8/0438 ,  G05D7/06 ,  H01M8/04223 ,  H01M16/00 ,  H01M8/04746 ,  H01M8/04302

Abstract: A control unit of a fuel cell system includes a valve control unit configured such that, when it is determined that an exhaust valve is stuck open in a quick warming-up operation, the valve control unit sets at least one of an operable opening area which is an opening area capable of being changed by control and a rate of opening change which is an opening changeable frequency at which an opening is changeable per unit time, for at least one of a pressure adjusting valve and a flow division valve, such that a flow rate of a cathode gas supplied to a fuel cell is in an allowable range of a requested supply flow rate required for the quick warming-up operation.

公开(公告)号：US10122035B2

公开(公告)日：2018-11-06

申请号：US15608955

申请日：2017-05-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shigeki Hasegawa ,  Masashi Toida

IPC: H01M8/04 ,  H01M8/04746 ,  H01M8/0438 ,  H01M8/04537

Abstract: A fuel cell system, comprising: a fuel cell stack configured to include a plurality of cells; a number “n” of injectors arranged in parallel to supply an anode gas to the fuel cell stack, where the number “n” represents an integral number of not less than 2; a cell voltage meter configured to measure a voltage of at least one cell among the plurality of cells; a pressure gauge configured to measure a supply pressure that is a pressure of the anode gas supplied to the fuel cell stack; and a controller configured to respectively input control signals into the number “n” of injectors by using the voltage measured by the cell voltage meter and the supply pressure measured by the pressure gauge and to control a driving number that denotes a number of injectors to be driven among the number “n” of injectors, wherein when the measured voltage is equal to or higher than a predetermined voltage value, the controller is configured to set a target value of the supply pressure and the driving number according to a required electric power, when the measured voltage is lower than the predetermined voltage value, the controller is configured to perform a first control that fixes the driving number to the number “n” while setting a target value for purging that is a higher value than the target value according to the required electric power to the target value of the supply pressure, and when the supply pressure reaches the target value for purging by the first control, the controller is configured to perform a second control that cancels fixation of the driving number while continuing setting the target value for purging to the target value of the supply pressure.

公开(公告)号：US09819035B2

公开(公告)日：2017-11-14

申请号：US14933570

申请日：2015-11-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsuyoshi Maruo ,  Yoshiaki Naganuma ,  Tomohiro Ogawa ,  Masashi Toida

IPC: H01M8/04 ,  H01M8/04746 ,  H01M8/04223 ,  H01M8/0438 ,  H01M8/04664 ,  H01M8/04119

CPC classification number: H01M8/04761 ,  H01M8/04097 ,  H01M8/04179 ,  H01M8/04231 ,  H01M8/04253 ,  H01M8/04388 ,  H01M8/04686 ,  H01M2250/20 ,  Y02T90/32

Abstract: The present invention provides a fuel cell system capable of suppressing the accumulation of impurities in a hydrogen system even when a hydrogen pump stops. A fuel cell system 100 includes a hydrogen pump 4, which is provided in a hydrogen gas circulation flow path 3 and which circulates a hydrogen off-gas discharged from the outlet side of a hydrogen electrode 1a of a fuel cell 1 to the inlet side of the hydrogen electrode 1a, a discharge valve 61, through which the hydrogen off-gas flowing in the hydrogen gas circulation flow path 3 is discharged out of the hydrogen gas circulation flow path 3, a determination section 81, which determines whether the hydrogen pump 4 is stopped, and a control unit 80, which controls the opening/closing of the discharge valve 61. If the determination section 81 determines that the hydrogen pump 4 has been stopped, then the control unit 80 controls the opening/closing of the discharge valve 61 to increase the discharge amount of the hydrogen off-gas discharged through the discharge valve 61 so as to be greater than the discharge amount of the hydrogen off-gas discharged on the assumption that the hydrogen pump 4 is in operation.

公开(公告)号：US09531022B2

公开(公告)日：2016-12-27

申请号：US14890444

申请日：2014-04-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shuya Kawahara ,  Keigo Suematsu ,  Masashi Toida ,  Ryota Akaboshi

IPC: H01M8/04

CPC classification number: H01M8/04768 ,  H01M8/04074 ,  H01M8/04253 ,  H01M8/04268 ,  H01M8/04358 ,  Y02E60/50

Abstract: A fuel cell system comprises a fuel cell stack, a circulation flow path of a cooling medium, a pump provided in the circulation flow path, a supply-side temperature sensor provided to detect a supplied cooling medium temperature, a discharge-side temperature sensor provided to detect a discharged cooling medium temperature, and a cold-start controller configured to control a circulation volume of the cooling medium by the pump at a cold start of the fuel cell stack. The cold-start controller estimates a fuel cell internal temperature and selectively sets the circulation volume of the cooling medium between a reduced volume and a normal volume, based on a magnitude relationship between the internal temperature and the discharged cooling medium temperature. When the supplied cooling medium temperature becomes equal to the discharge cooling medium temperature after setting the circulation volume, the cold-start controller sets the circulation volume of the cooling medium to an increased volume (maximum circulation volume).

Abstract translation: 一种燃料电池系统，包括燃料电池堆，冷却介质的循环流路，设置在循环流路中的泵，设置用于检测供给的冷却介质温度的供给侧温度传感器，设置有排出侧温度传感器 以检测排出的冷却介质温度;以及冷启动控制器，其构造成在所述燃料电池堆的冷启动时由所述泵控制所述冷却介质的循环体积。 冷启动控制器估计燃料电池内部温度，并且基于内部温度和排出的冷却介质温度之间的大小关系，选择性地将冷却介质的循环体积设定在减小的体积和正常体积之间。 冷却启动控制器将冷却介质的循环量设定为增加的体积（最大循环量）后，在供给的冷却介质的温度与排出冷却介质的温度相等后，