公开(公告)号：US20210066736A1

公开(公告)日：2021-03-04

申请号：US16896555

申请日：2020-06-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Shinji ASO

IPC: H01M8/04858 ,  H01M8/04537 ,  H01M8/0662

Abstract: A fuel cell system includes a controller configured to execute refreshing control for removing an oxide film on a catalyst during an operation of a fuel cell, and an impedance measurer configured to measure an impedance of the fuel cell during the operation of the fuel cell. The impedance measurer executes a calculation process for calculating the impedance by using measurement values of a current and a voltage of the fuel cell in a predetermined measurement time, and outputs a substitute value prepared in advance as the impedance when the start of the refreshing control during the measurement time is detected.

公开(公告)号：US20190273273A1

公开(公告)日：2019-09-05

申请号：US16286915

申请日：2019-02-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi WATANABE ,  Satoshi SHIOKAWA ,  Shuhei NAKAMURA ,  Norihiro FUKAYA

IPC: H01M8/0438 ,  H01M8/04111 ,  H01M8/04082 ,  H01M8/0432 ,  H01M8/04119 ,  H01M8/04858 ,  B60L50/72 ,  B60L50/71

Abstract: A fuel cell system includes: a flow sensor configured to measure an actual flow rate of air which is introduced into an oxidizing gas supply passage via a compressor when a fuel cell generates electric power; and a wind speed deriving unit configured to acquire a flow rate of air measured by the flow sensor in a state in which air flows from the oxidizing gas supply passage to an oxidizing gas discharge passage via the compressor and a bypass flow passage and to derive an actual wind speed of wind which is received by the fuel cell system, when the compressor stops.

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：US20160190613A1

公开(公告)日：2016-06-30

申请号：US14976440

申请日：2015-12-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Tetsuya BONO ,  Osamu HAMANOI

IPC: H01M8/04

CPC classification number: H01M8/04126 ,  H01M8/04067 ,  H01M8/04201 ,  H01M8/0432 ,  H01M8/04634 ,  H01M8/04641 ,  H01M8/04753 ,  H01M8/04761 ,  H01M8/04828 ,  H01M8/04835

Abstract: A fuel cell system includes a fuel cell including an electrolyte membrane, a sensor configured to measure a temperature of the fuel cell, and a controller. The controller is configured to cause the fuel cell to perform a wet operation to increase a water balance at a cathode of the fuel cell to a value higher than a water balance at the cathode during a normal operation of the fuel cell, when the temperature of the fuel cell measured by the sensor is maintained at a first threshold temperature or higher for a prescribed period of time or longer and then the temperature of the fuel cell decreases to below a second threshold temperature that is equal to or lower than the first threshold temperature.

Abstract translation: 燃料电池系统包括具有电解质膜的燃料电池，被配置为测量燃料电池的温度的传感器和控制器。 控制器构造成使得燃料电池进行湿式操作，以在燃料电池的正常操作期间将燃料电池的阴极处的水平衡提高到高于阴极处的水平衡的值，当燃料电池的温度 由传感器测量的燃料电池在第一阈值温度或更高温度下保持规定的时间或更长时间，然后燃料电池的温度降低到等于或低于第一阈值温度的第二阈值温度 。

公开(公告)号：US20160141688A1

公开(公告)日：2016-05-19

申请号：US14920064

申请日：2015-10-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Tetsuya Bono ,  Osamu Hamanoi

IPC: H01M8/04828 ,  H01M8/04119 ,  G01R31/36

CPC classification number: H01M8/04828 ,  G01R31/3662 ,  G01R31/3679 ,  H01M8/04126 ,  H01M8/04358 ,  H01M8/04492 ,  H01M8/04529 ,  H01M8/04634 ,  H01M8/04664 ,  H01M8/0485 ,  H01M2008/1095

Abstract: A fuel cell system, comprising: a measurer that measures an impedance of the fuel cell; a controller that controls an operation state of the fuel cell; and an acquirer that acquires a dryness degree of the fuel cell from the measured impedance when the operation state is a first operation state, and acquires the dryness degree of the fuel cell as a wet state when the operation state is a second operation state in which a water balance is more than the first operation state.

Abstract translation: 一种燃料电池系统，包括：测量所述燃料电池的阻抗的测量器; 控制器，其控制燃料电池的运行状态; 以及当所述操作状态是第一操作状态时从所测量的阻抗获取所述燃料电池的干燥程度的获取器，并且当所述操作状态是第二操作状态时获取所述燃料电池的湿度的干燥程度，其中， 水平衡比第一个运行状态多。

公开(公告)号：US20160126574A1

公开(公告)日：2016-05-05

申请号：US14927065

申请日：2015-10-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tetsuya BONO ,  Satoshi SHIOKAWA ,  Osamu HAMANOI

IPC: H01M8/04

CPC classification number: H01M8/04992 ,  H01M8/04238 ,  H01M8/043 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04619 ,  H01M8/04679 ,  H01M8/04753 ,  H01M8/0494 ,  H01M2250/20 ,  Y02T90/32

Abstract: The fuel cell system includes: a fuel cell 40 that receives supply of reactant gas to generate power; output characteristic updating means for updating an output characteristic of the fuel cell 40 based on output current and output voltage measured by a current sensor 140 and a voltage sensor 150; maximum power calculation means for calculating, using the output characteristic, the maximum power available at the fuel cell 40; and determination means for determining whether a value of the output characteristic is in an assumed situation where the output characteristic value is assumed to be temporarily lowered, wherein while the output characteristic value is determined by the determination means to be in the assumed situation, the maximum power calculation means calculates the maximum power using the output characteristic updated by the output characteristic updating means just before transition to the assumed situation.

Abstract translation: 燃料电池系统包括：燃料电池40，其接收反应气体的供应以产生电力; 输出特性更新装置，用于基于由电流传感器140和电压传感器150测量的输出电流和输出电压来更新燃料电池40的输出特性; 最大功率计算装置，用于使用所述输出特性来计算在所述燃料电池40处可用的最大功率; 以及确定装置，用于确定输出特性的值是否处于假定暂时降低输出特性值的假定情况，其中当由确定装置确定输出特性值处于假定情况时，最大值 功率计算装置使用在转换到假定情况之前由输出特性更新装置更新的输出特性来计算最大功率。

公开(公告)号：US20160116539A1

公开(公告)日：2016-04-28

申请号：US14879898

申请日：2015-10-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Tetsuya Bono ,  Osamu Hamanoi

IPC: G01R31/36

Abstract: A device for monitoring electricity generation comprising: an acquirer that acquires a total value of cell voltage from multiple cells including fuel cells; an increaser that increases the anode gas now rate to the multiple cells when the total value shows a possibility of negative voltage occurring in some of the multiple cells; and a judger that judges if negative voltage occurred in some of the multiple cells based on the total value following the increase of the anode gas flow rate.

Abstract translation: 一种用于监测发电的装置，包括：获取单元，其从包括燃料电池的多个单元获取单元电压的总值; 当总值显示出在一些多个电池中发生负电压的可能性时，增加阳极气体的增量器现在对多个电池进行比率; 以及基于阳极气体流量增加后的总值，判断在一些多个单元中是否发生负电压的判断器。

公开(公告)号：US20200274176A1

公开(公告)日：2020-08-27

申请号：US16790561

申请日：2020-02-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Shinji ASO

IPC: H01M8/04828 ,  H01M8/04746 ,  H01M8/04858 ,  H01M8/04225 ,  H01M8/04089 ,  H01M8/0438 ,  H01M8/0444

Abstract: When electric power requested from a load exceeds a predetermined reference value, an operating state of the fuel cell system is controlled so as to enable a normal operation mode where the fuel cell generates electric power corresponding to the requested electric power. When the requested electric power is the reference value or less, the operating state is controlled to enable an intermittent operation mode. A refresh process for sweeping current from the fuel cell and lowering the voltage of the fuel cell to a reduction voltage is executed during a shift from the intermittent operation mode to the normal operation mode. The current swept from the fuel cell at the start of the refresh process is reduced more as an oxygen amount in the fuel cell at the end of the intermittent operation mode is smaller.

公开(公告)号：US20160380294A1

公开(公告)日：2016-12-29

申请号：US15180526

申请日：2016-06-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satoshi SHIOKAWA ,  Yoshiaki NAGANUMA ,  Tomohiro OGAWA ,  Tsuyoshi MARUO ,  Hiroyuki IMANISHI

IPC: H01M8/04955 ,  H01M8/04223 ,  H01M8/04992 ,  H01M8/04828 ,  H01M8/04119 ,  H01M8/04664

CPC classification number: H01M8/04955 ,  H01M8/04097 ,  H01M8/04164 ,  H01M8/04225 ,  H01M8/04228 ,  H01M8/04253 ,  H01M8/04291 ,  H01M8/0432 ,  H01M8/04679 ,  H01M8/04686 ,  H01M8/04828 ,  H01M2250/20 ,  Y02T90/32

Abstract: At an ordinary stop time of a fuel cell system, a controller of the fuel cell system completes an ordinary stop process that includes at least one of a water drainage process that discharges water from at least one of the fuel gas flow path and the oxidizing gas flow path and a cathode sealing process that seals the oxidizing gas flow path, and subsequently stops the fuel cell system. When the fuel cell system satisfies a predetermined emergency stop condition, the controller does not perform at least part of the ordinary stop process but performs an emergency stop process that sets the fuel cell system to be restarted after elapse of a first time period since a stop of the fuel cell system and subsequently stops the fuel cell system. The controller restarts the fuel cell system after elapse of the first time period since stop of the fuel cell system and performs a restart process that performs the ordinary stop process.

Abstract translation: 在燃料电池系统的普通停止时刻，燃料电池系统的控制器完成普通停止处理，该停止处理包括从至少一个燃料气体流路和氧化气体排出水的排水过程中的至少一个 流动路径和密封氧化气体流动路径的阴极密封过程，并且随后停止燃料电池系统。 当燃料电池系统满足预定的紧急停止条件时，控制器不执行普通停止处理的至少一部分，而是执行紧急停止处理，该停止处理在从停止之后经过第一时间段之后设置要重新启动的燃料电池系统 并随后停止燃料电池系统。 在从燃料电池系统停止起经过第一时间段之后，控制器重新启动燃料电池系统，并且执行执行普通停止处理的重启过程。

公开(公告)号：US20160133969A1

公开(公告)日：2016-05-12

申请号：US14937631

申请日：2015-11-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tetsuya BONO ,  Satoshi SHIOKAWA ,  Osamu HAMANOI

IPC: H01M8/04

CPC classification number: H01M8/04611 ,  H01M8/04395 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04619 ,  H01M8/04679 ,  H01M8/0494 ,  H01M2250/20 ,  Y02P70/56 ,  Y02T90/32

Abstract: A fuel cell system comprising: an acquirer that acquires a total value of cell voltages of two or more cells included in a fuel cell; and a determiner that determines, when the total value is a first voltage value, abnormal power generation in which power generation by at least a part of the two or more cells is abnormal, that determines, when the total value is a second voltage value higher than the first voltage value, normal power generation in which power generation by the two or more cells is normal and that determines, when the total value is a third voltage value higher than the first voltage value but lower than the second voltage value, the normal power generation if a cathode gas is deficient or the abnormal power generation if the cathode gas is not deficient.

Abstract translation: 一种燃料电池系统，包括：获取器，其获取包括在燃料电池中的两个或更多个电池的电池电压的总值; 以及确定器，当所述总值是第一电压值时，确定由所述两个或更多小区的至少一部分发电的异常发电异常，则当所述总值为第二电压值较高时， 与第一电压值相比，两个以上电池的发电正常的正常发电，当总电压值高于第一电压值但低于第二电压值的第三电压值时，判定为正常 如果阴极气体不足，则发电，或者阴极气体不发生异常发电。