公开(公告)号：US20040058218A1

公开(公告)日：2004-03-25

申请号：US10251613

申请日：2002-09-20

Applicant: Ballard Power Systems Inc.

Inventor： Abderrahmane Atbi ,  David P. Wilkinson ,  Olen R. Vanderleeden ,  Shanna D. Knights ,  Andrew Lew

IPC: H01M008/02 ,  H01M008/10

CPC classification number: H01M8/04291 ,  H01M8/0247 ,  H01M8/0258 ,  H01M8/0263 ,  H01M8/04171 ,  H01M8/241 ,  H01M2008/1095

Abstract: Water management is improved in solid polymer electrolyte fuel cells by employing capillary channels or wicks in the lands that separate the reactant distribution channels in the flow fields. Capillary action moves water within these micro-sized capillary channels or wicks. Appropriate designs can be used to assist in the removal of water from the cell and/or in the redistribution of water from relatively wet regions in the cell to relatively dry regions.

Abstract translation: 在固体聚合物电解质燃料电池中通过在分离反应物流动区域中的分配通道的区域中使用毛细管道或芯来改善水管理。 毛细管作用使水在这些微型毛细通道或芯吸中移动。 可以使用适当的设计来帮助从细胞中除去水和/或从细胞中相对较湿的区域向相对干燥的区域再分配水。

公开(公告)号：US20040053084A1

公开(公告)日：2004-03-18

申请号：US10243984

申请日：2002-09-13

Applicant: Ballard Power Systems Inc.

Inventor： Jiujun Zhang ,  Kevin Colbow

IPC: H01M008/10 ,  H01M008/04

CPC classification number: H01M8/1009 ,  H01M8/04186

Abstract: Fuel cells are disclosed that operate directly on fuel streams comprising tetramethyl orthocarbonate in which tetramethyl orthocarbonate is directly oxidized at the anode and, more particularly, to solid polymer fuel cells operating directly on liquid fuel streams comprising tetramethyl orthocarbonate. Also disclosed are methods relating thereto.

Abstract translation: 公开了燃料电池，其直接在包含四甲基原碳酸酯的燃料流中操作，其中原碳酸四甲酯在阳极处直接氧化，更具体地，涉及直接在包含原碳酸四甲酯的液体燃料流上操作的固体聚合物燃料电池。 还公开了与之相关的方法。

公开(公告)号：US20030144439A1

公开(公告)日：2003-07-31

申请号：US10017485

申请日：2001-12-14

Applicant: Ballard Power Systems Inc.

Inventor： Charles Stone ,  Timothy J. Peckham ,  Donald J. Burton ,  Anilkumar Raghavanpillai

IPC: C08F114/18 ,  C07F003/06

CPC classification number: C07D333/12 ,  C07B37/04 ,  C07C17/093 ,  C07C41/30 ,  C07C43/225 ,  C07C201/12 ,  C07C25/28 ,  C07C25/24 ,  C07C22/08 ,  C07C205/11

Abstract: null,null,null-Trifluorostyrene and derivatives thereof synthesized in two steps from 1,1,1,2-tetrafluoroethylene. In the first step, 1,1,1,2-tetrafluoroethylene is reacted with a base, a metal salt such as zinc chloride and an optionally amine to form a trifluorovinyl metal complex. In the second step, the trifluorostyrene or derivative is obtained by reacting the trifluorovinyl metal complex with an aryl transfer agent such as, for example, an aryl triflate or an aryl halide, in the presence of a metal catalyst and optionally a coordinating ligand. Both steps may be carried out in one reactor.

公开(公告)号：US20030113594A1

公开(公告)日：2003-06-19

申请号：US10017470

申请日：2001-12-14

Applicant: Ballard Power Systems Inc.

Inventor： Martin T. Pearson

IPC: H01M008/04 ,  H01M016/00

CPC classification number: H01M8/04007 ,  H01M8/04119 ,  H01M8/04373 ,  H01M8/04559 ,  H01M8/04567 ,  H01M8/04597 ,  H01M8/04626 ,  H01M8/04753 ,  H01M8/04798 ,  H01M8/0488 ,  H01M16/006 ,  H02J3/387 ,  H02J2001/004 ,  H02J2001/008

Abstract: A fuel cell system electrically couples a battery in parallel with the fuel cell stack to power a load. An operational condition of the battery is compared to a desired operating condition and a partial pressure of a reactant flow to at least a portion of the fuel cell stack is adjusted based on the determined amount of deviation. The operational condition can include voltage, charge of the battery. Individual fuel cell systems can be combined in series and/or parallel to produce a combined fuel cell system having a desired output voltage and current.

Abstract translation: 燃料电池系统将电池与燃料电池堆并联电连接以对负载供电。 将电池的操作条件与期望的操作条件进行比较，并且基于确定的偏差量来调整反应物流到燃料电池堆的至少一部分的分压。 操作条件可以包括电池的电压，充电。 单独的燃料电池系统可以串联和/或并联组合以产生具有期望输出电压和电流的组合燃料电池系统。

公开(公告)号：US20030110837A1

公开(公告)日：2003-06-19

申请号：US10025202

申请日：2001-12-19

Applicant: Ballard Power Systems Inc.

Inventor： Stephen John Pratt

IPC: G01M003/04 ,  G01M003/08

CPC classification number: G01M3/3227 ,  G01M3/228

Abstract: A method for locating an internal transfer leak in a fuel cell stack by applying a substantially constant gas pressure difference between a first fluid stream passage and a second fluid stream passage, wherein gas pressure in the second fluid stream passage is higher than gas pressure in the first fluid stream passage. A test gas is supplied to the second fluid stream passage and a test liquid is supplied to the first fluid stream passage. A parameter indicative of flow rate of the test gas exiting the first fluid stream passage is measured as the test liquid fills the first fluid stream passage. An apparatus for locating an internal transfer leak in a fuel cell stack is also provided.

公开(公告)号：US20030077501A1

公开(公告)日：2003-04-24

申请号：US10004528

申请日：2001-10-23

Applicant: Ballard Power Systems Inc.

Inventor： Shanna Denine Knights ,  David Pentreath Wilkinson

IPC: H01M008/10 ,  H01M008/02

CPC classification number: H01M8/04089 ,  H01M4/8626 ,  H01M8/0228 ,  H01M8/0254 ,  H01M8/0256 ,  H01M8/0258 ,  H01M8/0265 ,  H01M8/0267 ,  H01M8/04007 ,  H01M8/04291

Abstract: An electrochemical fuel cell having reactant flow passages with a non-uniform design to increase reactant access to an adjacent fluid distribution layer at the outlet region as compared to the inlet region. In an embodiment, at least one reactant flow passage is narrower at the inlet than at the outlet, with a substantially constant cross-sectional area maintained along its length. Coolant channels may optionally be incorporated in the fluid flow plate to provide increased cooling at the reactant inlet. The plates may vary in thickness and run in counter-flow to improve efficient stacking of the fuel cells in a fuel cell stack with reactant passages of varying depth. In another embodiment, electrically conductive, masking foil covers a portion of at least one reactant flow passage in the inlet region, but does not extend the length of the passage.

Abstract translation: 具有非均匀设计的反应物流动通道的电化学燃料电池，以增加与入口区域相比在出口区域处的相邻流体分布层的反应物进入。 在一个实施方案中，至少一个反应物流动通道在入口处比在出口处更窄，其沿着其长度保持基本上恒定的横截面面积。 可以可选地将冷却剂通道并入流体流动板中，以在反应物入口处提供增加的冷却。 板可以在厚度上变化并且在逆流中运行，以改善燃料电池在具有不同深度的反应物通道的燃料电池堆中的有效堆叠。 在另一个实施例中，导电屏蔽箔覆盖入口区域中的至少一个反应物流动通道的一部分，但不延伸通道的长度。

公开(公告)号：US20030076110A1

公开(公告)日：2003-04-24

申请号：US10076857

申请日：2002-02-14

Applicant: Ballard Power Systems Inc.

Inventor： Zhaoyu Wang ,  Ross W. Johnston Bailey ,  Graham E. Hill ,  Hong The Nguyen

IPC: H01M008/04 ,  G01N027/02

CPC classification number: H01M8/04671 ,  H01M8/04679

Abstract: A fuel cell resistance test system includes a contact head having a plurality of spaced electrical contacts for contacting multiple ones of the fuel cells composing the stack. In one embodiment, a plurality of selectively actuable switches produce a short between respective pairs of adjacent ones of the electrical contacts. A processor opens each of the switches, one at a time in succession, to apply a defined voltage from a voltage source, successively across pairs of adjacent ones of the electrical contacts. A current sensor measures a resulting current and the processor or other computer determines whether a short exists based on the magnitude of the defined voltage and the magnitude of the resulting current. Alternatively, the test system may include a current source and a voltage sensor.

Abstract translation: 燃料电池电阻测试系统包括具有多个间隔开的电触点的接触头，用于接触构成该叠层的多个燃料电池。 在一个实施例中，多个可选择性致动的开关在各对相邻的电触点之间产生短路。 处理器打开每个开关，每次一个接一个地从电压源施加定义的电压，连续地跨越相邻的电触点对。 电流传感器测量所得到的电流，并且处理器或其他计算机基于所定义的电压的大小和所得到的电流的大小来确定是否存在短路。 或者，测试系统可以包括电流源和电压传感器。

公开(公告)号：US20230327148A1

公开(公告)日：2023-10-12

申请号：US18297750

申请日：2023-04-10

Applicant: Ballard Power Systems Inc.

Inventor： Makoto Adachi ,  Elisabeth Noyer ,  Gabriel Yves Fortin ,  Johnny Gong

IPC: H01M8/0284 ,  H01M8/2483 ,  H01M8/1004

CPC classification number: H01M8/0284 ,  H01M8/2483 ,  H01M8/1004 ,  H01M2008/1095

Abstract: A sealed fuel cell assembly comprising a sealed active region comprising an ionomer electrolyte disposed between an anode electrode and a cathode electrode to form a membrane electrode assembly; a sealed manifold region adjacent the sealed active area; and an elastomeric seal comprising a first elastomeric seal bead circumscribing a periphery of the membrane electrode assembly and a second elastomeric seal bead circumscribing a periphery of a manifold port; wherein the elastomeric seal further comprises a reinforcing material that is physically separated from the membrane electrode assembly and has a lower elasticity than the elastomeric seal.

公开(公告)号：US20220278334A1

公开(公告)日：2022-09-01

申请号：US17745472

申请日：2022-05-16

Applicant: BALLARD POWER SYSTEMS INC.

Inventor： Rajesh BASHYAM ,  Ping HE ,  Siyu YE

IPC: H01M4/86 ,  H01M8/1004 ,  H01M4/90 ,  H01M4/92

Abstract: A membrane electrode assembly comprises a polymer electrolyte interposed between an anode electrode and a cathode electrode, the anode electrode comprising an anode catalyst layer adjacent at least a portion of a first major surface of the polymer electrolyte, the cathode electrode comprising a cathode catalyst layer adjacent at least a portion of a second major surface of the polymer electrolyte; at least one of the anode and cathode catalyst layers comprising: a first catalyst composition comprising a noble metal; and a second composition comprising a metal oxide; wherein the second composition has been treated with a fluoro-phosphonic acid compound.

公开(公告)号：US20220263096A1

公开(公告)日：2022-08-18

申请号：US17734808

申请日：2022-05-02

Applicant: Ballard Power Systems Inc.

Inventor： Rajesh BASHYAM ,  Alan YOUNG

IPC: H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M8/1004 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1044

Abstract: A membrane electrode assembly comprises an anode electrode comprising an anode catalyst layer; a cathode electrode comprising a cathode catalyst layer; and a polymer electrolyte membrane interposed between the anode electrode and the cathode electrode; wherein at least one of the anode and cathode catalyst layers comprises a block co-polymer comprising poly(ethylene oxide) and poly(propylene oxide).