公开(公告)号：US09905869B2

公开(公告)日：2018-02-27

申请号：US12675299

申请日：2008-12-17

申请人： Kenji Umayahara ,  Takeshi Maenaka ,  Atsushi Imai

发明人： Kenji Umayahara ,  Takeshi Maenaka ,  Atsushi Imai

IPC分类号： H01M8/04 ,  H01M8/04537 ,  H01M8/04492 ,  H01M8/04858 ,  H01M8/1018

CPC分类号： H01M8/04649 ,  H01M8/04492 ,  H01M8/04552 ,  H01M8/04559 ,  H01M8/0491 ,  H01M2008/1095

摘要： In the event that at least a portion of unit cells in a fuel cell stack have experienced a significant drop in voltage, the fuel cell system will execute a voltage recovery process allowing them to recover generating capability. In the voltage recovery process, a controller measures impedance of the fuel cell stack, and based on these measurements, determines the hydration condition of the electrolyte membrane inside the fuel cell. If, during the determination of hydration condition, the controller has determined that the hydration level is low, a current limiting process for temporarily limiting output of the fuel cell in order to recover generating capability will be triggered under more lenient conditions, as compared to if determined that the hydration level is high.

公开(公告)号：US08999591B2

公开(公告)日：2015-04-07

申请号：US12808478

申请日：2008-12-18

申请人： Kenji Umayahara ,  Takeshi Maenaka

发明人： Kenji Umayahara ,  Takeshi Maenaka

IPC分类号： H01M8/04 ,  H01M8/10

CPC分类号： H01M8/04246 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04679 ,  H01M8/04753 ,  H01M8/0494 ,  H01M2008/1095 ,  H01M2250/20 ,  Y02E60/50 ,  Y02T90/32

摘要： It is possible to prevent excessive power generation of a fuel cell when a failure has occurred. When a start signal is input, a fuel cell system sets an open end voltage of the fuel cell as an initial value of the output voltage of the fuel cell corresponding to the output current zero of the fuel cell. When the failure is detected, the fuel cell system reads out the open end voltage of the preset initial value as the output voltage corresponding to the output current zero and controls the voltage so that the output voltage of the fuel cell coincides with the open end voltage.

摘要翻译： 当发生故障时，可以防止燃料电池的过度发电。 当输入起动信号时，燃料电池系统将燃料电池的开路端电压设定为与燃料电池的输出电流零点对应的燃料电池的输出电压的初始值。 当检测到故障时，燃料电池系统读出预设初始值的开路端电压作为对应于输出电流零的输出电压，并控制电压，使得燃料电池的输出电压与开路电压一致 。

公开(公告)号：US08268495B2

公开(公告)日：2012-09-18

申请号：US12303518

申请日：2007-08-16

申请人： Kota Manabe ,  Takeshi Maenaka ,  Takahiko Hasegawa

发明人： Kota Manabe ,  Takeshi Maenaka ,  Takahiko Hasegawa

IPC分类号： G01N27/416

CPC分类号： H01M8/04649 ,  H01M8/0488 ,  H01M2250/20 ,  Y02T90/32

摘要： When the operation point of a DC/DC converter, which steps up/down the output voltage of a fuel cell stack, is in a range of reduction in response capability and further there is issued a request of determining an AC impedance, a controller switches numbers of the drive phases of the DC/DC converter to determine an AC impedance of the fuel cell stack. If the operation point of the DC/DC converter is in the range of reduction in response capability and further the precision of determining the AC impedance is reduced, then the determination of AC impedance in the range of reduction in response capability is inhibited and the switching of the phases of the DC/DC converter is implemented, thereby causing the operation point of the DC/DC converter to be out of the range of reduction in response capability, with the result that the precision of determining the AC impedance can be raised.

摘要翻译： 当升压/降低燃料电池堆的输出电压的DC / DC转换器的操作点处于响应能力降低的范围内时，还发出确定AC阻抗的请求，控制器切换 用于确定燃料电池堆的AC阻抗的DC / DC转换器的驱动相位数。 如果DC / DC转换器的工作点处于响应能力下降的范围内，并且进一步降低了确定交流阻抗的精度，那么阻抗在响应能力下降范围内的确定被阻止，并且切换 实现DC / DC转换器的相位，从而使得DC / DC转换器的操作点处于响应能力降低的范围之外，结果可以提高确定AC阻抗的精度。

公开(公告)号：US20100248054A1

公开(公告)日：2010-09-30

申请号：US12743919

申请日：2008-11-11

申请人： Kenji Umayahara ,  Michio Yoshida ,  Takeshi Maenaka

发明人： Kenji Umayahara ,  Michio Yoshida ,  Takeshi Maenaka

IPC分类号： H01M8/04

CPC分类号： H01M8/04089 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04753 ,  H01M8/0494 ,  H01M10/44 ,  H01M16/006

摘要： Electric power generation is properly controlled during a high potential avoidance operation. A fuel cell system comprises a fuel cell for generating an electric power upon receiving supply of a reactant gas and a controller for performing control for high potential avoidance with the upper limit of the output voltage of the fuel cell as a high potential avoidance voltage lower than the open end voltage thereof. The controller computes a larger system requirement power out of a system requirement power calculated from a load requirement and a system requirement power calculated from the high potential avoidance voltage as a system requirement power for the fuel cell. To compute the system requirement power for the fuel cell, not only the system requirement power calculated from the load requirement but also the system requirement power calculated from the high potential avoidance voltage are taken into account, and therefore the electric power can be stably generated without causing fuel shortage. The amount of the electric power to be generated can be properly controlled, and hence battery overcharging can be thus prevented.

摘要翻译： 在高潜力回避操作期间适当地控制发电。 燃料电池系统包括用于在接收到反应气体的供应时产生电力的燃料电池和用于执行具有高电位回避的控制的控制器，其中燃料电池的输出电压的上限为低电位回避电压 其开路端电压。 控制器根据从负载要求计算出的系统要求功率和从高电位回避电压计算的系统要求功率作为燃料电池的系统要求功率计算更大的系统需求功率。 为了计算燃料电池的系统需求功率，不仅考虑从负载要求计算的系统要求功率，还考虑了从高电位回避电压计算出的系统要求功率，因此可以稳定地产生电力而不需要 导致燃料短缺。 可以适当地控制要产生的电力的量，因此可以防止电池过度充电。

公开(公告)号：US20100239930A1

公开(公告)日：2010-09-23

申请号：US12675299

申请日：2008-12-17

申请人： Kenji Umayahara ,  Takeshi Maenaka ,  Atsushi Imai

发明人： Kenji Umayahara ,  Takeshi Maenaka ,  Atsushi Imai

IPC分类号： H01M8/04

CPC分类号： H01M8/04649 ,  H01M8/04492 ,  H01M8/04552 ,  H01M8/04559 ,  H01M8/0491 ,  H01M2008/1095

摘要： In the event that at least a portion of unit cells in a fuel cell stack have experienced a significant drop in voltage, the fuel cell system will execute a voltage recovery process allowing them to recover generating capability. In the voltage recovery process, a controller measures impedance of the fuel cell stack, and based on these measurements, determines the hydration condition of the electrolyte membrane inside the fuel cell. If, during the determination of hydration condition, the controller has determined that the hydration level is low, a current limiting process for temporarily limiting output of the fuel cell in order to recover generating capability will be triggered under more lenient conditions, as compared to if determined that the hydration level is high.

摘要翻译： 在燃料电池堆中的单元电池的至少一部分经历了显着的电压下降的情况下，燃料电池系统将执行电压恢复过程，使得它们能够恢复生成能力。 在电压恢复过程中，控制器测量燃料电池堆的阻抗，并且基于这些测量，确定燃料电池内的电解质膜的水合状态。 如果在确定水合条件期间，控制器已经确定水化水平低，则在更宽松的条件下将暂时限制用于临时限制燃料电池的输出以恢复发电能力的限流过程，如果 确定水合水平高。

公开(公告)号：US08159850B2

公开(公告)日：2012-04-17

申请号：US12443596

申请日：2007-10-01

申请人： Kota Manabe ,  Takahiko Hasegawa ,  Takeshi Maenaka

发明人： Kota Manabe ,  Takahiko Hasegawa ,  Takeshi Maenaka

IPC分类号： H02M5/00

CPC分类号： H02M3/1584 ,  B60R16/03 ,  H02J1/102 ,  H02M3/1582 ,  H02P23/0004 ,  H02P27/06

摘要： A converter control device includes a converter device formed by three converter circuits connected together in parallel between a secondary battery as a first power source and a fuel cell as a second power source. A control unit includes: a PID control module for controlling the converter device by PID control and executing a desired voltage conversion; a drive phase quantity changing module for changing the number of drive phases of the converter device in accordance with the passing power of the converter device; and an integration term correction function switching module which switches the PID control integration term correction function when changing the number of drive phases.

摘要翻译： A转换器控制装置包括由作为第一电源的二次电池和作为第二电源的燃料电池并联连接在一起的三个转换器电路形成的转换器装置。 控制单元包括：PID控制模块，用于通过PID控制并执行所需的电压转换来控制转换器装置; 驱动相位数量改变模块，用于根据转换器装置的通过功率来改变转换器装置的驱动相位数; 以及积分项校正功能切换模块，其在改变驱动相位数时切换PID控制积分项校正功能。

公开(公告)号：US20100266914A1

公开(公告)日：2010-10-21

申请号：US12742335

申请日：2008-11-11

申请人： Takeshi Maenaka ,  Atsushi Imai

发明人： Takeshi Maenaka ,  Atsushi Imai

IPC分类号： H01M8/04

CPC分类号： H01M8/04559 ,  B60L11/1881 ,  B60L11/1885 ,  H01M8/04268 ,  H01M8/0432 ,  H01M8/04567 ,  H01M8/04589 ,  H01M8/04597 ,  H01M8/04753 ,  H01M8/0488 ,  H01M8/04888 ,  H01M8/0491 ,  H01M8/04917 ,  H01M10/44 ,  H01M10/48 ,  H01M2250/20 ,  Y02T10/92 ,  Y02T90/32 ,  Y02T90/34

摘要： A fuel cell system is turned off without using up the electric power of a secondary battery in the case where a fuel cell fails to start up, while reducing the startup time of the fuel cell system. When an ignition key is turned on, a controller calculates allowable waiting time for a fuel cell to start up on the basis of the electric power stored in a secondary battery. If the fuel cell fails to start up during the period of time from the instant the ignition key was turned on until the allowable waiting time elapses, then the controller turns on an alarm lamp which indicates the startup failure of the fuel cell. Meanwhile, in the case where the fuel cell starts up, the controller begins a normal operation in which a traction motor and the like are actuated by using the electric power generated by the fuel cell and the electric power stored in the secondary battery.

摘要翻译： 在燃料电池不能启动的情况下，同时减少燃料电池系统的启动时间，燃料电池系统被关闭而不用二次电池的电力。 当点火钥匙打开时，控制器基于存储在二次电池中的电力来计算燃料电池启动的允许等待时间。 如果燃料电池在从点火钥匙开启的瞬间到经过允许的等待时间的时间段内不能起动，则控制器接通指示燃料电池启动故障的报警灯。 同时，在燃料电池启动的情况下，控制器开始通过使用由燃料电池产生的电力和存储在二次电池中的电力来致动牵引电动机等的正常操作。

公开(公告)号：US20100209792A1

公开(公告)日：2010-08-19

申请号：US12680840

申请日：2008-12-18

申请人： Kenji Umayahara ,  Takeshi Maenaka ,  Atsushi Imai

发明人： Kenji Umayahara ,  Takeshi Maenaka ,  Atsushi Imai

IPC分类号： H01M8/04

CPC分类号： H01M8/04559 ,  B60L3/0046 ,  B60L3/0053 ,  B60L11/1887 ,  B60L11/1892 ,  B60L2210/10 ,  H01M8/0488 ,  Y02T10/7216 ,  Y02T90/34

摘要： Provided is a fuel cell system that can change the number of active phases in a DC/DC converter in order to prevent overcurrent from flowing through one point (e.g., a reactor of the DC/DC converter) in the system. In step S1, whether or not the system is in a state that causes a rapid change in a voltage command value is checked. If the system is in a state that causes a rapid change in the voltage command value, the processing goes to step S2, and if not, the processing goes to step S3. In step S2, a DC/DC converter is prohibited from being driven in a single phase and the processing ends. In step S3, the DC/DC converter is permitted to be driven in a single phase and the processing ends.

摘要翻译： 提供了一种燃料电池系统，其可以改变DC / DC转换器中的有源相的数量，以便防止过电流流过系统中的一个点（例如，DC / DC转换器的电抗器）。 在步骤S1中，检查系统是否处于引起电压指令值的快速变化的状态。 如果系统处于电压指令值急剧变化的状态，则处理进入步骤S2，否则，处理进入步骤S3。 在步骤S2中，禁止在单相中驱动DC / DC转换器，并且处理结束。 在步骤S3中，DC / DC转换器被允许以单相驱动，处理结束。

公开(公告)号：US07305871B2

公开(公告)日：2007-12-11

申请号：US11386791

申请日：2006-03-23

申请人： Hiroshi Arita ,  Takahiro Aki ,  Takeshi Maenaka

发明人： Hiroshi Arita ,  Takahiro Aki ,  Takeshi Maenaka

IPC分类号： G01M15/00

CPC分类号： F02P7/061

摘要： A cylinder discriminating device includes a cylinder discriminating section. A crank rotor includes first and second non-tooth portions asymmetrically positioned on the crank rotor. The first non-tooth portion is positioned to correspond to a top dead center of a specific cylinder. A crank signal is outputted when each of the plurality of the tooth portions is detected. A cam signal is outputted when a predetermined tooth portion of a cam rotor is detected. And, the cylinder discriminating section discriminates the specific cylinder by detecting the first non-tooth portion based on number of the crank signals detected during a time period from a time when one of the first and second non-tooth portions is detected to a time when the other of the first and second non-tooth portions is detected, and by detecting whether or not the cylinder discriminating section detects the cam signal during the same time period.

摘要翻译： 气缸鉴别装置包括气缸鉴别部分。 曲柄转子包括不对称地定位在曲柄转子上的第一和第二非齿部分。 第一非齿部被定位成对应于特定气缸的上止点。 当检测到多个齿部中的每一个时，输出曲柄信号。 当检测到凸轮转子的预定齿部时，输出凸轮信号。 并且，气缸识别部通过基于从检测到第一和第二非齿部中的一个时刻到时间期间检测到的曲柄信号的数量来检测第一非齿部分来识别特定气缸， 检测第一和第二非齿部分中的另一个，并且通过检测气缸识别部分是否在同一时间段内检测到凸轮信号。

公开(公告)号：US09142846B2

公开(公告)日：2015-09-22

申请号：US12682423

申请日：2008-09-25

申请人： Takeshi Maenaka ,  Atsushi Imai

发明人： Takeshi Maenaka ,  Atsushi Imai

IPC分类号： H01M8/04

CPC分类号： H01M8/04225 ,  H01M8/04089 ,  H01M8/04223 ,  H01M8/04302 ,  H01M8/04679 ,  H01M8/04753 ,  H01M2250/20 ,  Y02E60/50 ,  Y02T90/32

摘要： Whether a gas leakage occurs or not is accurately determined in a simple configuration. When receiving a request for activation of a fuel cell, a control unit opens a main shutoff valve to start hydrogen gas supply from a hydrogen tank to the fuel cell. The control unit thereafter performs gas leakage determination processing for a hydrogen piping system. If it is determined in the gas leakage determination processing that a gas leakage occurs, a gas leakage alert is output to stop the activation of the fuel cell. If it is determined in the gas leakage determination processing that a gas leakage does not occur, a compressor is activated to start oxidant gas supply to the fuel cell, and the fuel cell continues being operated.

摘要翻译： 是否能够以简单的结构精确地确定是否发生气体泄漏。 当接收到燃料电池的激活请求时，控制单元打开主截流阀，以从氢罐向燃料电池供应氢气。 控制单元此后对氢管道系统进行气体泄漏判定处理。 如果在气体泄漏确定处理中确定发生气体泄漏，则输出气体泄漏警报以停止燃料电池的激活。 如果在气体泄漏确定处理中确定没有发生气体泄漏，则激活压缩机以启动对燃料电池的氧化剂气体供应，并且燃料电池继续运行。