Fuel Cell Power Plant Diverting Air in Response to Low Demand
    51.
    发明申请
    Fuel Cell Power Plant Diverting Air in Response to Low Demand 审中-公开
    燃料电池发电厂响应低需求转向空气

    公开(公告)号:US20090098427A1

    公开(公告)日:2009-04-16

    申请号:US12085401

    申请日:2005-11-29

    申请人: Carl A. Reiser

    发明人: Carl A. Reiser

    IPC分类号: H01M8/04

    摘要: A fuel cell system, which may be powering a vehicle propulsion system (159), includes a fuel cell power plant having a stack (151) including a plurality of fuel cells (12), each having a cathode (19) and anode (17) separated by a membrane (16), and an air pump (174) connected to reactant air flow fields through a diverter valve (172). A controller (185) is responsive to normal and high demand to cause the diverter valve to allow air to flow from the pump to the reactant air flow fields, and is responsive to low demand to cause said diverter valve to divert air directly into ambient so that it does not reach the cathode, thereby to reduce open circuit voltage conditions that promote degradation of the cathode, and to prevent excessive performance decay. An auxiliary load (220) can be in the diverted air flow, either ahead of or after the diverter valve. Energy storage (200, 201) works with the vehicle propulsion system.

    摘要翻译: 可以为车辆推进系统(159)供电的燃料电池系统包括燃料电池发电厂,其具有包括多个燃料电池(12)的堆叠(151),每个燃料电池单元具有阴极(19)和阳极(17) )和通过分流阀(172)连接到反应物气流场的气泵(174)。 控制器(185)响应于正常和高的需求以使分流阀允许空气从泵流动到反应物气流场,并且响应于低需求以使所述分流阀将空气直接转入环境中 它不会到达阴极,从而降低促进阴极退化的开路电压条件,并防止过度的性能衰减。 辅助负载(220)可以在转向阀之前或之后的转向空气流中。 储能(200,201)与车辆推进系统配合使用。

    Porous carbon body for a fuel cell having an electronically conductive hydrophilic agent
    52.
    发明授权
    Porous carbon body for a fuel cell having an electronically conductive hydrophilic agent 有权
    具有电子导电性亲水剂的燃料电池用多孔碳体

    公开(公告)号:US06746982B2

    公开(公告)日:2004-06-08

    申请号:US10034884

    申请日:2001-12-27

    IPC分类号: B01J2118

    摘要: The invention is a porous carbon body for a fuel cell having an electronically conductive hydrophilic agent and method of manufacture of the body. The porous carbon body comprises an electronically conductive graphite powder in an amount of between 60%-80% by weight of the body; a carbon fiber in an amount of between 5%-15% by weight of the body; a thermoset binder in an amount of between 6%-18% by weight of the body; and, a modified carbon black electronically conductive hydrophilic agent in an amount of between 2%-20% by weight of the body. The body provides for increased wettability without any decrease in electrical conductivity, and also provides for an efficient manufacture without any need for high temperature, costly steps to graphitize the body, or to incorporate post molding hydrophilic agents into pores of the body.

    摘要翻译: 本发明是一种具有电子导电亲水剂的燃料电池用多孔碳体及其制造方法。 多孔碳体包含电子导电石墨粉末,其量为体内重量的60%-80%; 其量为体重的5%-15%之间的碳纤维; 一种热固性粘合剂,其量为体重的6%-18%; 和改性炭黑电子导电亲水剂,其量为体重的2%-20%。 身体提供增加的润湿性,而不导致电导率的任何降低,并且还提供有效的制造,而不需要高温,昂贵的步骤来石墨化身体,或将后成型亲水剂并入身体的孔中。

    Method and apparatus for improved delivery of input reactants to a fuel cell assembly
    53.
    发明授权
    Method and apparatus for improved delivery of input reactants to a fuel cell assembly 有权
    用于改进输入反应物输送到燃料电池组件的方法和装置

    公开(公告)号:US06497971B1

    公开(公告)日:2002-12-24

    申请号:US09265139

    申请日:1999-03-08

    申请人: Carl A. Reiser

    发明人: Carl A. Reiser

    IPC分类号: H01M804

    摘要: Disclosed is a fuel cell stack assembly for use in a fuel cell power plant and for producing electricity from fuel and oxidizer reactants. The fuel cell stack assembly includes a plurality of individual fuel cells each having an electrolytic medium, a cathode and an anode, and the cell stack assembly is adapted for defining anode flow fields for exposing the anodes to a fuel, cathode flow fields for exposing the cathodes to an oxidant. Also included are input and output manifolds defining input and output inner volumes in fluid communication with the cathode flow fields, and at least one blower mounted with one of the manifolds for flowing oxidizer through cathode flow fields. The blower can be mounted within an inner volume defined by a manifold, and can be a vane axial or centrifugal blower, and can be driven by a variable speed motor. Multiple blowers can be associated with the cell stack assembly, and can either push or pull (or both) the oxidizer through the cathode flow fields. In a fuel cell stack assembly having fuel cells arranged in separate stacks, each stack has a blower associated therewith.

    摘要翻译: 公开了一种用于燃料电池发电厂并用于从燃料和氧化剂反应物产生电力的燃料电池堆组件。 燃料电池堆组件包括多个独立的燃料电池,每个单独的燃料电池均具有电解介质,阴极和阳极,并且电池组组件适用于限定将阳极暴露于燃料的阳极流场,阴极流场用于暴露 阴极氧化剂。 还包括限定与阴极流场流体连通的输入和输出内容积的输入和输出歧管,以及安装有用于使氧化剂流过阴极流场的歧管之一的至少一个鼓风机。 鼓风机可以安装在由歧管限定的内部容积内,并且可以是叶片轴向或离心式鼓风机,并且可以由变速马达驱动。 多个鼓风机可以与电池堆组件相关联,并且可以通过阴极流场推动或拉动(或两者)氧化剂。 在燃料电池堆组件中,具有排列成分开堆叠的燃料电池,每个电堆具有与其相关联的鼓风机。

    Molten carbonate fuel cell matrix tape
    54.
    发明授权
    Molten carbonate fuel cell matrix tape 失效
    熔融碳酸盐燃料电池基体胶带

    公开(公告)号:US4581302A

    公开(公告)日:1986-04-08

    申请号:US307123

    申请日:1981-09-30

    IPC分类号: H01M2/16 H01M8/02 H01M8/14

    摘要: A matrix material for a molten carbonate fuel cell is described which is flexible, pliable and has rubber-like compliance at room temperature. The matrix has three components comprising fine inert particulate material, larger crack attenuating ceramic particulate material, and an organic polymeric binder. A process of assembling a molten carbonate fuel cell utilizing the compliant matrix material is also described. The compliant matrix material is inserted into a molten carbonate fuel cell stack utilizing fuel cell anodes with sufficient porosity to contain excess electrolyte. The fuel cell is heated up to a temperature sufficient to remove the polymer binder and cause a portion of the electrolyte material present in the anode to wick into the matrix to substantially fill it completely.

    摘要翻译: 描述了一种熔融碳酸盐燃料电池的基质材料,其在室温下是柔性的,柔韧的并且具有类似橡胶的柔顺性。 该基体具有包括细惰性颗粒材料,较大的裂纹衰减陶瓷颗粒材料和有机聚合物粘合剂的三个组分。 还描述了利用顺应性基质材料组装熔融碳酸盐燃料电池的方法。 使用具有足够孔隙率的燃料电池阳极以容纳过量电解质将顺应性基质材料插入熔融碳酸盐燃料电池堆中。 将燃料电池加热到足以除去聚合物粘合剂的温度,并使阳极中存在的电解质材料的一部分吸入基质中以基本上完​​全填充它。

    Molten carbonate fuel cell matrix tape and assembly method
    55.
    发明授权
    Molten carbonate fuel cell matrix tape and assembly method 失效
    熔融碳酸盐燃料电池基体胶带和组装方法

    公开(公告)号:US4538348A

    公开(公告)日:1985-09-03

    申请号:US549020

    申请日:1983-11-07

    IPC分类号: H01M2/16 H01M8/02 H01M8/14

    摘要: A matrix material for a molten carbonate fuel cell is described which is flexible, pliable and has rubber-like compliance at room temperature. The matrix has three components comprising fine inert particulate material, larger crack attenuating ceramic particulate material, and an organic polymeric binder. A process of assembling a molten carbonate fuel cell utilizing the compliant matrix material is also described. The compliant matrix material is inserted into a molten carbonate fuel cell stack utilizing fuel cell anodes with sufficient porosity to contain excess electrolyte. The fuel cell is heated up to a temperature sufficient to remove the polymer binder and cause a portion of the electrolyte material present in the anode to wick into the matrix to substantially fill it completely.

    摘要翻译: 描述了一种熔融碳酸盐燃料电池的基质材料,其在室温下是柔性的,柔韧的并且具有类似橡胶的柔顺性。 该基体具有包括细惰性颗粒材料,较大的裂纹衰减陶瓷颗粒材料和有机聚合物粘合剂的三个组分。 还描述了利用顺应性基质材料组装熔融碳酸盐燃料电池的方法。 使用具有足够孔隙率的燃料电池阳极以容纳过量电解质将顺应性基质材料插入熔融碳酸盐燃料电池堆中。 将燃料电池加热到足以除去聚合物粘合剂的温度,并使阳极中存在的电解质材料的一部分吸入基质中以基本上完​​全填充它。

    Fuel cell cooling system
    56.
    发明授权
    Fuel cell cooling system 失效
    燃料电池冷却系统

    公开(公告)号:US3964930A

    公开(公告)日:1976-06-22

    申请号:US597614

    申请日:1975-07-21

    申请人: Carl A. Reiser

    发明人: Carl A. Reiser

    摘要: A cooler for removing waste heat from a stack of fuel cells includes a plurality of tubes for carrying the coolant through the stack. The tubes are disposed adjacent the nonelectrolyte side of electrodes in the stack in grooves or passageways formed in the surface of plates which separate one cell in the stack from another. Since the tubes are exposed to the electrolyte used in the stack they must be made from or at least include a protective coating of material which is stable in the electrolyte. Preferably this material is also a dielectric to prevent shunt currents from passing into the tubes and coolant which may be water.

    摘要翻译: 用于从一堆燃料电池去除废热的冷却器包括用于将冷却剂携带通过堆叠的多个管。 这些管被布置在堆叠中的电极的非电解质侧附近,其形成在板的表面中的槽或通道中,这将板中的一个电池与另一个电池分开。 由于管暴露于堆叠中使用的电解质,它们必须由至少包括在电解质中稳定的材料的保护涂层制成或至少包括。 优选地,该材料也是用于防止分流电流进入管的电介质和可以是水的冷却剂。

    Reduced axial pressure in fuel cell stacks
    57.
    发明授权
    Reduced axial pressure in fuel cell stacks 有权
    降低燃料电池堆中的轴向压力

    公开(公告)号:US08728684B2

    公开(公告)日:2014-05-20

    申请号:US12737106

    申请日:2008-09-26

    IPC分类号: H01M8/00 H01M8/24

    摘要: Fuel cell stacks (20) include fuel cells (22) in which internal pressure on membranes (28), caused by adjacent cross points (19) or ribs (9, 17) of gas flow field plates (7, 33) is reduced by lowering the axial load holding the stack together, after an initial high axial load, that establishes minimal possible internal resistance, has been held for between a few hours and 20 hours. The need for robust axial load restraints is also reduced. Pressure of cross points (19) can also be spread by stiffening components or adding stiffeners.

    摘要翻译: 燃料电池堆(20)包括燃料电池(22),其中由气体流场板(7,33)的相邻交叉点(19)或肋(9,17)引起的膜(28)上的内压由 在初始高轴向载荷(建立最小可能的内阻)之后,将保持堆叠的轴向载荷降低几个小时至20小时。 对于强大的轴向载荷限制的需求也减少了。 交叉点(19)的压力也可以通过加强部件或加强筋来扩展。

    Small volume, fuel cell inlet fuel gas distributor having low pressure drop
    58.
    发明授权
    Small volume, fuel cell inlet fuel gas distributor having low pressure drop 有权
    小体积的燃料电池入口燃气分配器具有低压降

    公开(公告)号:US08076039B2

    公开(公告)日:2011-12-13

    申请号:US11506686

    申请日:2006-08-18

    CPC分类号: H01M8/2484 H01M8/2485

    摘要: In a fuel cell stack, an inlet fuel distributor (15, 31, 31a, 31b) comprises a plurality of fuel distributing passageways (17-23, 40-47, 64) of substantially equal length and equal flow cross section to uniformly distribute fuel cell inlet fuel from a fuel supply conduit (13, 14, 50) to a fuel inlet manifold (28). The conduits may be either channels (40-47; 64) formed within a plate (39) or tubes (17-23). The channels may have single exits (65) or double exits (52, 53) into the fuel inlet manifold.

    摘要翻译: 在燃料电池堆中,入口燃料分配器(15,31,31a,31b)包括多个燃料分配通道(17-23,40-47,64),其大体上具有相同的长度和相等的流动横截面以均匀分布燃料 从燃料供应管道(13,14,50)到燃料入口歧管(28)的电池入口燃料。 导管可以是形成在板(39)或管(17-23)内的通道(40-47; 64)。 通道可以具有单个出口(65)或双出口(52,53)进入燃料入口歧管。

    DETERMINING DURATION OF FUEL CELL SHUTDOWN HYDROGEN STABILIZATION BY COUNTING COULOMBS
    59.
    发明申请
    DETERMINING DURATION OF FUEL CELL SHUTDOWN HYDROGEN STABILIZATION BY COUNTING COULOMBS 有权
    通过计算COULOMBS确定燃料电池关闭氢稳定的时间

    公开(公告)号:US20110200901A1

    公开(公告)日:2011-08-18

    申请号:US12998452

    申请日:2008-12-04

    申请人: Carl A. Reiser

    发明人: Carl A. Reiser

    IPC分类号: H01M8/04

    摘要: A process for shutting down a fuel cell power plant (5) shuts off (40) process air, recycles (44-46) air exhaust 42 to air inlets 34, and connects an auxiliary load to the stack (6). Coulombs are counted by integrating (17) current (73) or voltage (75) to the load to determine when all oxygen in the air side (10, 27, 30, 34, 42, 44-47) of the power plant is consumed and a desired concentration of hydrogen is transferred to the air side of the power plant. The speed of the shutdown processes may be increased by increasing fuel pressure (15) or adding a battery (78) in series with the auxiliary load.

    摘要翻译: 关闭燃料电池发电厂(5)的过程关闭(40)处理空气,将排气42再循环(44-46)到空气入口34,并将辅助负载连接到堆(6)。 通过将(17)电流(73)或电压(75)积分到负载来计算库仑,以确定发电厂的空气侧(10,27,30,44,44-47)中的所有氧气何时消耗 并且将期望的氢浓度转移到发电厂的空气侧。 关闭过程的速度可以通过增加与辅助负载串联的燃料压力(15)或增加电池(78)来增加。

    PEM fuel cell system with a porous hydrophobic plug for maintaining system back pressure and methods for designing the plug and for designing systems for using the plug
    60.
    发明申请
    PEM fuel cell system with a porous hydrophobic plug for maintaining system back pressure and methods for designing the plug and for designing systems for using the plug 有权
    PEM燃料电池系统具有用于维持系统背压的多孔疏水塞,以及用于设计插头和设计使用插头的系统的方法

    公开(公告)号:US20100239933A1

    公开(公告)日:2010-09-23

    申请号:US12799387

    申请日:2010-04-23

    IPC分类号: H01M8/04

    摘要: A polymer electrolyte membrane (PEM) fuel cell power plant is cooled evaporatively by a non-circulating pressurized water coolant system. The coolant system utilizes a hydrophobic porous plug for bleeding air from from the coolant water while maintaining coolant back pressure in a coolant flow field of the system. Furthermore, there is a first method for identifying appropriate parameters of the hydrophobic porous plug for use with a known particular coolant system; and a second method for determining proper operating conditions for a fuel cell water coolant system which can operate with a hydrophobic porous plug closure having known physical parameters.

    摘要翻译: 聚合物电解质膜(PEM)燃料电池发电厂通过非循环加压水冷却剂系统蒸发冷却。 冷却剂系统使用疏水性多孔塞,用于从冷却水中排出空气,同时保持系统冷却剂流场中的冷却剂背压。 此外,存在用于识别用于已知特定冷却剂系统的疏水性多孔塞的适当参数的第一种方法; 以及用于确定燃料电池水冷却剂系统的适当操作条件的第二种方法,所述燃料电池水冷却剂系统可以用具有已知物理参数的疏水性多孔塞子