公开(公告)号：US20230027330A1

公开(公告)日：2023-01-26

申请号：US17808636

申请日：2022-06-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA

IPC: B60L3/00 ,  H01M8/043 ,  H01M10/48 ,  B60L50/75 ,  B60L58/40

Abstract: When a voltage measurement value of a first voltage sensor that measures voltage at a direct current end of an inverter exceeds an overvoltage threshold value, and a battery is non-chargeable, a controller of a fuel cell electric vehicle is configured to drive an electric power consumption device until the voltage measurement value falls below the overvoltage threshold value. When the voltage measurement value exceeds the overvoltage threshold value and the battery can be charged, the controller is configured to cause the fuel cell electric vehicle to continue traveling, while estimating the voltage at the direct current end using a second voltage sensor that measures output voltage of a fuel cell stack or a third voltage sensor that measures output voltage of the battery.

公开(公告)号：US20200036023A1

公开(公告)日：2020-01-30

申请号：US16438620

申请日：2019-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomohiro OGAWA ,  Tomotaka ISHIKAWA ,  Shinji ASOU ,  Tomio YAMANAKA ,  Junichi MATSUO ,  Ryosuke OYA

IPC: H01M8/04701 ,  H01M8/04225 ,  H01M8/04302 ,  H01M8/0432 ,  H01M8/04082 ,  H01M8/04029 ,  B60L58/33 ,  B60L58/34

Abstract: A fuel cell vehicle comprises a fuel cell, a power storage device, a drive motor, a temperature sensor configured to measure a temperature of the fuel cell, a detector configured to detect an operation condition of the fuel cell, and a controller. At a start time of the fuel cell, in a case where the temperature of the fuel cell detected by the temperature sensor is below a freezing point, when an output condition of the fuel cell shown by the detected operation condition of the fuel cell continuously corresponds to a predetermined low output condition for a predetermined reference time period or longer, the controller sets a driving state of the fuel cell vehicle to a first driving state that stops power generation of the fuel cell, drives the drive motor by using only the power storage device as a power source and limits a motor output of the drive motor to be equal to or lower than a predetermined first upper limit output.

公开(公告)号：US20180233793A1

公开(公告)日：2018-08-16

申请号：US15892656

申请日：2018-02-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA

IPC: H01M16/00 ,  B60L11/18 ,  H01M8/04537 ,  H01M8/04664 ,  H01M8/04955 ,  H01M8/04302 ,  H01M8/04303 ,  H01M10/42

Abstract: When an overvoltage is generated in one converter and an overvoltage is not generated in another converter, the whole system continues to operate using a power source connected to the other converter. Here, it is determined whether a reason for an overvoltage is an open-circuit fault in a relay connecting the two converters or a fault in an overvoltage detecting circuit of one converter, and system control suitable for the fault is performed.

公开(公告)号：US20220200085A1

公开(公告)日：2022-06-23

申请号：US17643297

申请日：2021-12-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA

IPC: H01M16/00 ,  B60L58/40 ,  H01M8/04858 ,  H01M8/04537

Abstract: A fuel cell system includes: a fuel cell; a fuel cell step-up converter having an input terminal, wherein the input terminal is connected to the fuel cell; a secondary cell; a secondary cell step-up converter having an input terminal an output terminal, wherein the input terminal is connected to the secondary cell. wherein the output terminal is connected to an output terminal of the fuel cell step-up converter; and a control device configured to control at least the fuel cell step-up converter and the secondary cell step-up converter to control the fuel cell system, wherein, the control device executes interruption control when the control device executes continuity control and an output of the fuel cell system is requested to be greater than an output of the secondary cell in the continuity control, wherein the continuity control is a control to control the secondary cell step-up converter to output an input voltage from the secondary cell without stepping up the input voltage, wherein the interruption control is a control to interrupt an electrical connection between the fuel cell system and the secondary cell.

公开(公告)号：US20210114468A1

公开(公告)日：2021-04-22

申请号：US17027886

申请日：2020-09-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA ,  Keiji KISHIDA

IPC: B60L50/60 ,  H01M10/42 ,  B60W20/11 ,  G06N20/00

Abstract: The data recording apparatus includes a model storage configured to store a model generated by use of sample data indicating a measurement value of a sample and a degree of deterioration of the sample at the time when the measurement value is obtained, and a controller configured to acquire target data indicating a measurement value of a target and a degree of deterioration of the target at the time when the measurement value is obtained. The model storage stores a first model generated by use of the sample data relevant to the degree of deterioration of the sample belonging to a first range, and a second model generated by use of the sample data relevant to the degree of deterioration of the sample belonging to a second range partially overlapping with the first range. The controller generates first data indicating change in a first abnormality of the target in accordance with the degree of deterioration in the first range, by use of the target data and the first model, and generates second data indicating change in a second abnormality of the target in accordance with the degree of deterioration in the second range, by use of the target data and the second model.

公开(公告)号：US20210091391A1

公开(公告)日：2021-03-25

申请号：US17109674

申请日：2020-12-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA

IPC: H01M8/04044 ,  H01M8/04225 ,  H01M8/04537 ,  H01M8/1018 ,  H01M8/22 ,  H01M8/04858

Abstract: A fuel cell system FCS includes a fuel cell 10, a high voltage circuit 21 for driving an electromotor 42, and a relay 41 for electrically connecting or blocking the fuel cell 10 to or from the high voltage circuit 21. A control unit 50 obtains insulation decrease information in accordance with a request for starting the fuel cell, and performs, when a specified insulation decrease occurred region is not a fuel cell region SE1 including the fuel cell and the cooling circuit, conductivity reduction process on cooling liquid using a conductivity reduction unit 113 before having a relay 41 connect, and has the relay 41 connect after completing the conductivity reduction process.

公开(公告)号：US20180287171A1

公开(公告)日：2018-10-04

申请号：US15909752

申请日：2018-03-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA

IPC: H01M8/04044 ,  H01M8/04225 ,  H01M8/04537 ,  H01M8/04858 ,  H01M8/1018 ,  H01M8/22

Abstract: A fuel cell system FCS includes a fuel cell 10, a high voltage circuit 21 for driving an electromotor 42, and a relay 41 for electrically connecting or blocking the fuel cell 10 to or from the high voltage circuit 21. A control unit 50 obtains insulation decrease information in accordance with a request for starting the fuel cell, and performs, when a specified insulation decrease occurred region is not a fuel cell region SE1 including the fuel cell and the cooling circuit, conductivity reduction process on cooling liquid using a conductivity reduction unit 113 before having a relay 41 connect, and has the relay 41 connect after completing the conductivity reduction process.

公开(公告)号：US20230219442A1

公开(公告)日：2023-07-13

申请号：US17984342

申请日：2022-11-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA ,  Yu SHIMIZU

IPC: B60L53/62 ,  B60L58/24

CPC classification number: B60L53/62 ,  B60L58/24

Abstract: A vehicle in which a battery is charged with supplied power from a power supply outside the vehicle includes the battery, a temperature sensor which detects a temperature of the battery, a temperature raising device which raises the temperature of the battery, and a control device. The control device is configured to, in a period in which the temperature of the battery is lower than a reference temperature during execution of the external charging, execute power storage amount control for raising the temperature of the battery by driving the temperature raising device while keeping a power storage amount of the battery within a predetermined range. The control device is configured to, when the supplied power is smaller than a possible minimum value of consumed power of the temperature raising device in the power storage amount control, intermittently operate the temperature raising device with the battery receiving the supplied power continuously.

公开(公告)号：US20210101492A1

公开(公告)日：2021-04-08

申请号：US16983033

申请日：2020-08-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA

IPC: B60L50/75 ,  B60L53/22 ,  B60W50/02 ,  B60W50/029 ,  B60L1/00 ,  H01M16/00 ,  H01M8/04111 ,  H01M8/04828 ,  H01M8/04664 ,  H01M8/04858

Abstract: A fuel cell system installed in a vehicle includes: a fuel cell; a secondary battery; a load including a drive motor and an air compressor; a fuel cell converter; a secondary battery converter; a failure detection unit; a first state determination unit; a reverse rotation detection unit; and a control unit. The control unit performs a limp-home traveling control that supplies electric power from the secondary battery to the drive motor when the secondary battery converter fails. When the vehicle is not in the first state, the control unit prohibits regeneration of the drive motor. When the vehicle is in the first state, the control unit supplies a reaction current to the air compressor. When the reaction current is applied and a reverse rotation of the air compressor is detected, the control unit does not apply the reaction current thereafter.

公开(公告)号：US20200075973A1

公开(公告)日：2020-03-05

申请号：US16527760

申请日：2019-07-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke OYA

IPC: H01M8/04089 ,  H01M8/04537 ,  H01M8/2457

Abstract: The fuel cell system comprises a fuel gas tank, a fuel cell configured to generate electricity with oxidizing gas and fuel gas supplied from the fuel gas tank, a current sensor configured to detect output current from the fuel cell, a voltage sensor configured to detect output voltage from the fuel cell, and a controller. The controller is configured to determine that fuel gas quality does not meet predetermined standard quality when the controller determines output from the fuel cell has decreased using current values detected by the current sensor and voltage values detected by the voltage sensor after filling operation of the fuel gas into the fuel gas tank.