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    Fuel cell system
    1.
    发明授权
    Fuel cell system 有权

    公开(公告)号：US11837762B2

    公开(公告)日：2023-12-05

    申请号：US17326852

    申请日：2021-05-21

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Shigeki Hasegawa ,  Motoyuki Kimata ,  Nobukazu Mizuno

    IPC: H01M8/04746 ,  H01M8/04089 ,  H01M8/0438

    CPC classification number: H01M8/04776 ,  H01M8/04089 ,  H01M8/04395 ,  H01M8/04753 ,  H01M2250/20

    Abstract: Provided is a fuel cell system configured to accurately control the gas flow rate and pressure ratio of a turbo-type air compressor. The fuel cell system is a fuel cell system comprising: a fuel cell, an air compressor, an oxidant gas supply flow path, an oxidant gas discharge flow path, an oxidant gas outlet valve, a bypass flow path, a bypass valve, an atmospheric pressure sensor, an outside temperature sensor, a flow rate sensor, a rotational frequency sensor, an angle sensor, a controller, and a calculator configured to estimate the flow resistance Zd, total pressure, partial pressure and energy of each of members that are the air compressor, the oxidant gas outlet valve and the bypass valve.

    Fuel cell system and method of controlling fuel cell system
    2.
    发明授权
    Fuel cell system and method of controlling fuel cell system 有权

    公开(公告)号：US11611094B2

    公开(公告)日：2023-03-21

    申请号：US16269902

    申请日：2019-02-07

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Yusuke Miyamoto ,  Shigeki Hasegawa ,  Naoki Tomi ,  Nobukazu Mizuno ,  Masafumi Yamagata

    IPC: H01M8/04746 ,  H01M8/04082 ,  H01M8/04111

    Abstract: A fuel cell system is equipped with a control unit that controls a rotational speed of the turbo compressor that supplies air to an air supply flow passage and an opening degree of at least one valve that adjusts a flow rate and a pressure of the air supplied to a fuel cell such that an operating point of the turbo compressor becomes a target operating point. The control unit sets the target operating point within an operating point range that is on the higher flow rate side than at least part of a first region where an amount of change in flow rate is larger than a predetermined value when a pressure ratio of the turbo compressor is changed by a predetermined amount at a same rotational speed, on a higher flow rate side than a surging region, when a predetermined condition is fulfilled.

    Fuel cell system
    3.
    发明授权
    Fuel cell system 有权

    公开(公告)号：US11569516B2

    公开(公告)日：2023-01-31

    申请号：US17538004

    申请日：2021-11-30

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Nobukazu Mizuno ,  Shigeki Hasegawa ,  Miyu Haga ,  Seiichi Tanaka

    IPC: H01M8/04746 ,  H01M8/0438

    Abstract: A fuel cell system includes a fuel cell stack, a fuel gas supply path, an injector, an ejector, a circulation path, an outlet port pressure detection unit, and a control device. The control device stops driving the injector when an ejector outlet port pressure is equal to or more than a required upper limit value with the injector driven, and drives the injector when the ejector outlet port pressure is equal to or less than a required lower limit value with the injector stopped. The control device reduces the required upper limit value stepwise and reduces the required lower limit value stepwise in a range defined by a first target upper limit value and a second target upper limit value when a required load is varied from a first required load to a second required load and a load reduction amount is more than a first predetermined load.

    Fuel cell system
    6.
    发明授权
    Fuel cell system 有权

    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.

    METHOD FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY
    7.
    发明申请
    METHOD FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY 有权
    生产膜电极组件的方法

    公开(公告)号：US20140318696A1

    公开(公告)日：2014-10-30

    申请号：US14356267

    申请日：2012-11-01

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Keita Yamaue ,  Shigeaki Murata ,  Masahiro Imanishi ,  Shigeki Hasegawa ,  Ryoichi Nanba ,  Kyohei Kadota

    IPC: H01M8/10

    CPC classification number: H01M8/1004 ,  H01M4/8605 ,  H01M4/8814 ,  H01M4/96 ,  H01M8/0234 ,  Y02E60/521 ,  Y02P70/56

    Abstract: An object of the present invention is to provide a method for producing a membrane electrode assembly with excellent electrode transfer ability to electrolyte membrane. Disclosed is a method for producing a membrane electrode assembly, the assembly comprising an electrolyte membrane and an electrode which are attached to each other, the method comprising: a hot pressing step in which an electrolyte membrane and an electrode, the electrode comprising an electroconductive material and an electrolyte resin and being formed on a flexible substrate, are hot pressed to produce a laminate in which the electrolyte membrane, the electrode and the flexible substrate are laminated in this order, and a bending step in which the laminate is bent so that the flexible substrate side becomes concave, thereby removing the flexible substrate from the electrode.

    Abstract translation: 本发明的目的是提供一种具有优异的电解质膜电极转移能力的膜电极组件的制造方法。 公开了一种用于制造膜电极组件的方法，该组件包括彼此连接的电解质膜和电极，该方法包括：热压步骤，其中电解质膜和电极包括导电材料 和在柔性基板上形成的电解质树脂被热压以制造其中电解质膜，电极和柔性基板依次层叠的层压体，以及弯曲步骤，其中层压体被弯曲，使得 柔性基板侧变成凹形，从而从电极移除柔性基板。

    Fuel cell system
    10.
    发明授权
    Fuel cell system 有权

    公开(公告)号：US10892500B2

    公开(公告)日：2021-01-12

    申请号：US15936566

    申请日：2018-03-27

    Applicant: Toyota Jidosha Kabushiki Kaisha

    Inventor： Chiaki Mizutani ,  Yuji Ishikawa ,  Shigeki Hasegawa

    IPC: H01M8/04492 ,  H01M8/04537 ,  H01M8/04992 ,  H01M8/1018

    Abstract: A measurement error of a water content depends on a phase difference of a low frequency. The low frequency is a lower one of two frequencies in an alternating current signal used for calculating an impedance of a cell. The phase difference is a difference between a phase of a current value of an alternating current signal applied to a fuel cell stack and a phase of a voltage value of output current. The calculated value of the water content is not used when the phase difference of the low frequency indicates that the measurement error may largely fluctuate.

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