公开(公告)号：US20170263960A1

公开(公告)日：2017-09-14

申请号：US15451585

申请日：2017-03-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsuo IIO ,  Tomio YAMANAKA ,  Kohei ODA ,  Naoki SUGIYAMA

IPC: H01M8/04746 ,  H01M8/0432 ,  H01M8/04111 ,  H01M8/04537 ,  H01M8/04992 ,  H01M8/02

CPC classification number: H01M8/04753 ,  H01M8/02 ,  H01M8/04111 ,  H01M8/04358 ,  H01M8/04395 ,  H01M8/04649 ,  H01M8/0494 ,  H01M8/04992

Abstract: A fuel cell system comprises: a fuel cell stack; a turbo compressor configured to supply a cathode gas to the fuel cell stack through a cathode gas supply line; a pressure regulation valve configured to regulate a pressure of the cathode gas; and a controller, wherein the controller is configured to calculate a target rotation speed of the turbo compressor and a target opening position of the pressure regulation valve, based on a target flow rate of the cathode gas and a target pressure of the cathode gas that are determined according to a required power output of the fuel cell stack and to control the turbo compressor and the pressure regulation valve using the calculated target rotation speed and the calculated target opening position, and the controller is configured, upon increase of the required power output, to: (a) determine an acceptable overshoot level of a flow rate of the cathode gas that is to be supplied to the fuel cell stack, the acceptable overshoot level being selected from a plurality of levels based on at least an increased amount of the required power output; and (b) set a time change in opening position of the pressure regulation valve such that an overshoot amount in a change of the flow rate of the cathode gas becomes smaller as the acceptable overshoot level gets lower, and perform control of the pressure regulation valve. This configuration suppresses an excessive overshoot in the flow rate of the cathode gas.

公开(公告)号：US20170256805A1

公开(公告)日：2017-09-07

申请号：US15444697

申请日：2017-02-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Naoki SUGIYAMA ,  Atsuo IIO ,  Kohei ODA ,  Tomio YAMANAKA

IPC: H01M8/04746 ,  H01M8/04111 ,  H01M8/0438

CPC classification number: H01M8/04753 ,  H01M8/04089 ,  H01M8/04111 ,  H01M8/04395

Abstract: A fuel cell system comprises a controller configured to: (i) calculate a torque target value of a compressor and an opening position target value of a pressure regulation valve from a flow rate target value of a cathode gas and a pressure target value of a cathode gas flow path, the flow rate target value of the cathode gas and the pressure target value being determined according to a required power output of a fuel cell stack; (ii) calculate a torque feedback value of the compressor from a difference between a flow rate measurement value and the flow rate target value of the cathode gas, and control the compressor using a torque command value obtained by adding the torque target value and the torque feedback value; and (iii) calculate an opening position feedback value of the pressure regulation valve from a difference between a pressure measurement value and the pressure target value of the cathode gas flow path, and control an opening position of the pressure regulation valve using an opening position command value obtained by adding the opening position target value of the pressure regulation valve and a delayed opening position feedback value that is obtained by delaying the opening position feedback value. This configuration suppresses the hunting of the flow rate and the pressure.

公开(公告)号：US20190280317A1

公开(公告)日：2019-09-12

申请号：US16288412

申请日：2019-02-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Takahiko HASEGAWA ,  Kohei ODA ,  Satoshi WATANABE ,  Shuhei NAKAMURA ,  Norihiro FUKAYA

IPC: H01M8/04223 ,  H01M8/2404 ,  H01M8/242 ,  H01M8/04858 ,  H01M4/90

Abstract: A fuel cell system includes a removal treatment execution unit configured to execute an oxide layer removal treatment that removes an oxide layer generated on a catalyst of a fuel cell. The removal treatment execution unit is configured to execute the oxide layer removal treatment by adjusting a voltage of the fuel cell to be within a predetermined second voltage range lower than a predetermined first voltage range that is lower than an open-circuit voltage, when an operation of the fuel cell system shifts from a first operation, where a current value of the fuel cell is zero and the flow rate is controlled to maintain the voltage of the fuel cell within the first voltage range, to a second operation, where the current value is larger than zero and the flow rate is controlled in response to an output request to the fuel cell.

公开(公告)号：US20180145356A1

公开(公告)日：2018-05-24

申请号：US15806575

申请日：2017-11-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshiaki TSURUTA ,  Satoshi WATANABE ,  Hideyuki KUMEI ,  Shuya KAWAHARA ,  Kohei ODA

IPC: H01M8/04858 ,  H01M8/04537 ,  H01M16/00

Abstract: A fuel cell system according to one embodiment performs refresh control of an electrode catalyst of a fuel cell, by reducing a stack voltage as a voltage of the fuel cell to a refresh voltage at which the electrode catalyst is activated. The system includes the fuel cell that generates electric power by an electrochemical reaction using fuel gas and oxidation gas, a stack voltage sensor that sensors the stack voltage, and a controller that controls power of the fuel cell. When a high load demand that makes the stack voltage lower than a given voltage is made on the fuel cell, the controller causes the fuel cell to deliver power commensurate with the high load demand, and performs refresh control when the stack voltage becomes lower than the given voltage through the above control.

公开(公告)号：US20180108926A1

公开(公告)日：2018-04-19

申请号：US15725651

申请日：2017-10-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshiaki TSURUTA ,  Kohei ODA ,  Satoshi WATANABE ,  Hideyuki KUMEI ,  Shuya KAWAHARA

IPC: H01M8/04858 ,  H01M16/00 ,  H01M8/04746 ,  H01M8/04089

CPC classification number: H01M8/04953 ,  H01M8/04089 ,  H01M8/04223 ,  H01M8/04238 ,  H01M8/04753 ,  H01M8/04925 ,  H01M8/0494 ,  H01M10/48 ,  H01M16/006 ,  H01M2250/20 ,  Y02T90/32

Abstract: A fuel cell system of the present disclosure performs a first and a second catalyst activation process, and the first catalyst activation process is performed where a flow rate of the air supplied to the fuel cell by the air compressor is reduced to be less than that before the refresh control is performed while keeping an amount of a current drawn from the fuel cell by the fuel cell converter at the same value as that before the refresh control is performed, and the second catalyst activation process is performed where the value of the current drawn from the fuel cell by the fuel cell converter is increased to be greater than that before the refresh control is performed while keeping the flow rate of the air supplied to the fuel cell by the air compressor at the same value as that before the refresh control is performed.

公开(公告)号：US20160138600A1

公开(公告)日：2016-05-19

申请号：US14934711

申请日：2015-11-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kohei ODA ,  Kenji UMAYAHARA

IPC: F04D17/10 ,  F04D27/00

CPC classification number: F04D27/0261 ,  B60L1/003 ,  B60L11/1883 ,  F05B2260/821 ,  F05B2270/101 ,  F05B2270/1032 ,  F05B2270/335 ,  F05B2270/404 ,  F05D2260/821 ,  F05D2270/03 ,  F05D2270/304 ,  F05D2270/335 ,  F05D2270/44 ,  H01M8/04694 ,  H01M8/04753 ,  H01M2250/20 ,  Y02T90/32 ,  Y02T90/34

Abstract: A fuel cell system includes an air compressor that supplies oxidant gas to a fuel cell installed in a fuel cell vehicle, a measured rotational speed acquirer that acquires a measured value of rotational speed of the air compressor, and a controller that calculates a rotational speed command value of the air compressor based on required generated power of the fuel cell, calculates a torque command value of the air compressor based on the calculated rotational speed command value and current rotational speed of the air compressor, and controls rotational speed of the air compressor based on the calculated torque command value. The controller estimates the current rotational speed of the air compressor baaed on the measured value of the rotational speed acquired by the measured rotational speed acquirer and a history of the calculated torque command value, and calculates the torque command value by using the estimated rotational speed.

Abstract translation: 燃料电池系统包括空气压缩机，其向安装在燃料电池车辆中的燃料电池供给氧化剂气体，获取空气压缩机的转速的测量值的测量转速获取器，以及计算转速指令 基于燃料电池的所需发电功率，根据计算出的转速指令值和空气压缩机的当前转速来计算空气压缩机的转矩指令值，并基于空气压缩机的转速来控制空气压缩机的转速 计算出的转矩指令值。 控制器基于由测量的转速获取器获得的转速的测量值和计算出的转矩指令值的历史来估计空气压缩机的当前转速，并且使用估计转速来计算转矩指令值。

公开(公告)号：US20160137096A1

公开(公告)日：2016-05-19

申请号：US14939598

申请日：2015-11-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kohei ODA ,  Kenji UMAYAHARA ,  Yuji KAKENO ,  Mitsuhiro NADA

IPC: B60L11/18 ,  H01M8/04 ,  B60L15/20

CPC classification number: B60L11/1883 ,  B60L1/003 ,  B60L3/0053 ,  B60L11/1803 ,  B60L11/1898 ,  B60L15/20 ,  B60L2240/80 ,  B60L2250/28 ,  B60L2260/44 ,  B60L2270/145 ,  H01M8/04089 ,  H01M8/04111 ,  H01M8/0438 ,  H01M8/04746 ,  H01M8/04753 ,  H01M8/04992 ,  H01M2250/20 ,  Y02T10/7258 ,  Y02T90/32 ,  Y02T90/34

Abstract: In a vehicle including a fuel cell system, an electronic control unit is configured to perform first processing in which a rotation speed of an air pump is controlled based on a torque command value and a rotation speed command value, and to perform, in the first processing, at least one of second processing in which the torque command value is set to be larger than the calculated torque command value when at least one of values of an accelerator position, required electric power, and the rotation speed command value or a change rate thereof is increased by a prescribed first value or more, and third processing in which the torque command value is set to be smaller than the calculated torque command value when at least one of the values or the change rate thereof is decreased by a prescribed second value or more.

Abstract translation: 在包括燃料电池系统的车辆中，电子控制单元被配置为执行基于转矩指令值和转速指令值来控制空气泵的转速的第一处理，并且在第一处理 处理时，当加速器位置，所需电力和转速指令值或变化率中的至少一个值被设定为大于计算出的转矩指令值时的第二处理中的至少一个 并且当其值或变化率中的至少一个减小规定的第二值时，转矩指令值被设定为小于计算出的转矩指令值的第三处理 或者更多。

公开(公告)号：US20160137095A1

公开(公告)日：2016-05-19

申请号：US14922774

申请日：2015-10-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kohei ODA ,  Yuji KAKENO

IPC: B60L11/18 ,  H02P7/00 ,  H02P4/00

CPC classification number: B60L11/1881 ,  B60L7/10 ,  B60L11/1862 ,  B60L11/1887 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  Y02B90/12 ,  Y02T10/642 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7258 ,  Y02T10/7275 ,  Y02T90/34

Abstract: With a fuel cell vehicle includes a fuel cell and a secondary battery, a drive motor and a pump motor are connected to each other via an electric power line so that the drive motor and the pump motor are capable of receiving and supplying electric power with each other without involving reception and supply of electric power with the secondary battery. The control device determines an upper-limit guard value of torque of the pump motor based on a dischargeable power of the secondary battery and an output power of the fuel cell, or determines a lower-limit guard value of torque of the pump motor based on a chargeable power of the secondary battery and an output power of the fuel cell.

Abstract translation: 燃料电池车辆包括燃料电池和二次电池，驱动电动机和泵电动机通过电力线彼此连接，使得驱动电动机和泵电动机能够接收和供应每个电力 其他不涉及二次电池接收和供电的电力。 控制装置基于二次电池的可放电功率和燃料电池的输出功率来确定泵电动机的转矩的上限保护值，或者基于以下方式确定泵电动机的转矩的下限保护值 二次电池的充电电力和燃料电池的输出功率。