公开(公告)号：US07132185B2

公开(公告)日：2006-11-07

申请号：US10017483

申请日：2001-12-14

申请人： David S. Wardrop ,  Michael Sexsmith ,  Russell H. Barton

发明人： David S. Wardrop ,  Michael Sexsmith ,  Russell H. Barton

IPC分类号： H01M8/04

CPC分类号： H01M8/04559 ,  H01M8/0494

摘要： A fuel cell system for powering a work load includes a fuel cell stack and a shunt regulator having a threshold detection; transistorized power switching element, and a dump load. The threshold detection element identifies when an abnormally high voltage rises. The power switching element routes power from the high voltage buss to the dump load. The dump load acts as an electrical energy sink, and may provide dissipated energy to the fuel cell stack in the form of heat. The switching element can also shunt power to the dump load when a digital control signal is set, for example at startup or during cold start conditions.

公开(公告)号：US06797091B2

公开(公告)日：2004-09-28

申请号：US09747571

申请日：2000-12-22

申请人： Donald A. Lines ,  Nicholas A. Fletcher ,  Eric G. Pow ,  Michael Sexsmith ,  Bill Gray ,  Horst Thumm

发明人： Donald A. Lines ,  Nicholas A. Fletcher ,  Eric G. Pow ,  Michael Sexsmith ,  Bill Gray ,  Horst Thumm

IPC分类号： B32B3122

CPC分类号： B29C43/3607 ,  B29C43/003 ,  B29C43/36 ,  B29C43/56 ,  B29C2043/025 ,  B29C2043/566 ,  H01M8/0206 ,  H01M8/0213 ,  H01M8/0228 ,  Y10T29/10 ,  Y10T156/1023 ,  Y10T156/1039 ,  Y10T156/1056

摘要： An improved method for embossing expanded graphite sheet material including removing at least a portion of the gas from within the material by exposing the material to a pressure less than atmospheric pressure, and then embossing the material.

摘要翻译： 一种用于压花膨胀石墨片材的改进方法，包括通过将材料暴露于小于大气压力的压力，然后对该材料进行压花来从材料内部去除至少一部分气体。

公开(公告)号：US20080003474A1

公开(公告)日：2008-01-03

申请号：US11770009

申请日：2007-06-28

申请人： Jean St-Pierre ,  Stephen Campbell ,  Mark Watson ,  Michael Sexsmith

发明人： Jean St-Pierre ,  Stephen Campbell ,  Mark Watson ,  Michael Sexsmith

IPC分类号： H01M8/04 ,  H01M8/10

CPC分类号： H01M8/04044 ,  B60L58/30 ,  B60L58/33 ,  B60L58/34 ,  F01P11/06 ,  F01P2011/066 ,  F01P2025/80 ,  H01M8/04029 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02T90/34

摘要： Liquid cooled systems having coolant circulation loops must often operate in below freezing conditions. For instance, in various applications certain fuel cell systems must be able to tolerate repeated shutdown and storage in below freezing conditions. Conventional glycol-based coolants typically used for internal combustion engines are generally unsuitable for use in the associated fuel cell cooling subsystems due to the presence of additives and/or inhibitors which are normally included to deal with problems relating to decomposition of the glycol. With additives or inhibitors present, the coolant conductivity can be sufficiently high as to result in electrical shorting or corrosion problems. However, provided the purity of the coolant is maintained, a pure glycol and water coolant mixture may be used as a fuel cell system coolant to obtain suitable antifreeze protection. Adequate purity can be maintained by including an ion exchange resin unit in the cooling subsystem.

摘要翻译： 具有冷却剂循环回路的液体冷却系统必须经常在低于冰点条件下运行。 例如，在各种应用中，某些燃料电池系统必须能够在低于冰点条件下耐受重复停机和储存。 通常用于内燃机的常规的基于二醇的冷却剂通常不适合用于相关联的燃料电池冷却子系统中，这是由于通常包括用于处理与二醇分解有关的问题的添加剂和/或抑制剂的存在。 存在的添加剂或抑制剂时，冷却剂导电性可以足够高以致导致电短路或腐蚀问题。 然而，只要保持冷却剂的纯度，可以使用纯二醇和水冷却剂混合物作为燃料电池系统冷却剂以获得合适的防冻保护。 通过在冷却子系统中包括离子交换树脂单元可以保持足够的纯度。

公开(公告)号：US20050266283A1

公开(公告)日：2005-12-01

申请号：US11155803

申请日：2005-06-17

申请人： David Wardrop ,  Michael Sexsmith ,  Russell Barton

发明人： David Wardrop ,  Michael Sexsmith ,  Russell Barton

IPC分类号： H01M8/04 ,  H01H79/00

CPC分类号： H01M8/04559 ,  H01M8/0494

摘要： A fuel cell system for powering a work load includes a fuel cell stack and a shunt regulator having a threshold detection; transistorized power switching element, and a dump load. The threshold detection element identifies when an abnormally high voltage rises. The power switching element routes power from the high voltage buss to the dump load. The dump load acts as an electrical energy sink, and may provide dissipated energy to the fuel cell stack in the form of heat. The switching element can also shunt power to the dump load when a digital control signal is set, for example at startup or during cold start conditions.

摘要翻译： 用于为工作负载供电的燃料电池系统包括燃料电池堆和具有阈值检测的分流调节器; 晶体管功率开关元件和转储负载。 阈值检测元件识别异常高电压何时上升。 电源开关元件将电源从高压总线传送到转储负载。 倾卸载荷用作电能吸收器，并且可以以热的形式向燃料电池堆提供耗散的能量。 当设置数字控制信号时，例如在启动时或在冷启动条件下，开关元件还可以分流转储负载的电力。

公开(公告)号：US20070248847A1

公开(公告)日：2007-10-25

申请号：US10571417

申请日：2004-09-10

申请人： Herwig Haas ,  Cara Startek ,  Michael Sexsmith ,  Andrew DeSouza ,  Kelvin Fong

发明人： Herwig Haas ,  Cara Startek ,  Michael Sexsmith ,  Andrew DeSouza ,  Kelvin Fong

IPC分类号： H01M8/00

CPC分类号： H01M8/04253 ,  H01M8/0267 ,  H01M8/04303 ,  H01M8/241

摘要： Improved water distribution can be obtained within the cells of a fuel cell series stack by maintaining a suitable temperature difference between the cathode and anode sides of each cell in the stack during shutdown.

摘要翻译： 通过在关闭期间通过在堆叠中的每个电池的阴极侧和阳极侧之间保持合适的温度差，可以在燃料电池串联电池的电池内获得改进的水分配。

公开(公告)号：US20060275645A1

公开(公告)日：2006-12-07

申请号：US11145553

申请日：2005-06-03

申请人： Emerson Gallagher ,  Michael Sexsmith ,  Russell Barton

发明人： Emerson Gallagher ,  Michael Sexsmith ,  Russell Barton

IPC分类号： H01M8/02 ,  H01M8/10 ,  H01M8/24

CPC分类号： H01M8/04179 ,  H01M8/04231

摘要： An electrochemical fuel cell stack with integrated anode exhaust valves is disclosed, comprising a plurality of fuel cells, each fuel cell having an anode and at least one anode flow field channel, an anode exhaust manifold fluidly connected to the at least one anode flow field channel of each fuel cell, and a means for minimizing fluid backflow from the anode exhaust manifold into the anode flow field channels of the fuel cells. Methods for purging, and reducing fuel cell voltage variations within, the electrochemical fuel cell stack are also disclosed.

摘要翻译： 公开了一种具有集成阳极排气阀的电化学燃料电池堆，其包括多个燃料电池，每个燃料电池具有阳极和至少一个阳极流场通道，阳极排气歧管流体连接至至少一个阳极流场通道 以及用于最小化从阳极排气歧管到燃料电池的阳极流场通道的流体回流的装置。 还公开了用于净化和降低电化学燃料电池堆内的燃料电池电压变化的方法。

公开(公告)号：US20050214603A1

公开(公告)日：2005-09-29

申请号：US10811791

申请日：2004-03-29

申请人： Russell Barton ,  Michael Sexsmith

发明人： Russell Barton ,  Michael Sexsmith

IPC分类号： G01N29/02 ,  H01M8/04 ,  H01M8/06

CPC分类号： H01M8/04164 ,  H01M8/04097 ,  H01M8/04231 ,  H01M8/04462 ,  H01M8/04761 ,  H01M8/04798 ,  H01M8/04835 ,  H01M8/0662

摘要： In a hydrogen gas line where the composition of the gas is primarily hydrogen, impurities present in the gas line will typically reduce the speed of sound. Accordingly, an acoustic sensor can be used in such a hydrogen gas line to indicate when impurities have accumulated in the gas line. In particular, the hydrogen gas line may be in a fuel line for an electrochemical fuel cell system. The sensor may comprise transducers, more particularly piezoelectric transducers, as both sound detectors and/or sound generators. Further, the sensor can measure either the speed or frequency of sound to determine the hydrogen concentration. If the fuel is recirculated back to the anode inlet, such a hydrogen sensor in the anode exhaust may be used to determine when it is beneficial to purge the anode exhaust to the external atmosphere.

摘要翻译： 在气体组成主要为氢气的氢气管线中，气体管线中存在的杂质通常会降低声速。 因此，在这样的氢气管线中可以使用声学传感器来指示杂质何时积聚在气体管线中。 特别地，氢气管线可以在用于电化学燃料电池系统的燃料管线中。 传感器可以包括作为声音检测器和/或声音发生器的换能器，更具体地说是压电换能器。 此外，传感器可以测量声音的速度或频率以确定氢浓度。 如果燃料再循环回到阳极入口，阳极排气中的这种氢传感器可用于确定什么时候有利地将阳极废气吹扫到外部大气。