公开(公告)号：US06783884B2

公开(公告)日：2004-08-31

申请号：US10122048

申请日：2002-04-12

申请人： Peter R. Gibb ,  Neil V. Davis ,  Emerson R. Gallagher

发明人： Peter R. Gibb ,  Neil V. Davis ,  Emerson R. Gallagher

IPC分类号： H01M802

CPC分类号： H01M8/0254 ,  H01M8/026 ,  H01M8/0267 ,  H01M2008/1095

摘要： A flow field plate assembly for an electrochemical fuel cell comprises two flow field plates, each of which has channels formed on an inner surface of the plate. The plates are alignable with and engage each other such that their cooperating inner surfaces form at least one inner coolant fluid channel. The coolant channel has an essentially constant cross-sectional perimeter along its length, which is defined by the perimeters of the channels of the two plates and their difference in width at the cooperating plate surfaces. Additionally, a flow field plate assembly, which comprises a corrugated flow field plate and a staggered flow field plate, is structurally stronger under compressive load during the fuel cell operation.

摘要翻译： 用于电化学燃料电池的流场板组件包括两个流场板，每个流场板具有形成在板的内表面上的通道。 板彼此对准并相互接合，使得其配合的内表面形成至少一个内部冷却剂流体通道。 冷却剂通道沿着其长度具有基本恒定的横截面周长，其由两个板的通道的周长及其在配合的板表面处的宽度差限定。 此外，包括波纹流场板和交错流场板的流场板组件在燃料电池操作期间在压缩负载下在结构上更强。

公开(公告)号：US06232008B1

公开(公告)日：2001-05-15

申请号：US09471564

申请日：1999-12-23

申请人： Boguslaw M. Wozniczka ,  Mehrzad Tabatabaian ,  Neil V. Davis

发明人： Boguslaw M. Wozniczka ,  Mehrzad Tabatabaian ,  Neil V. Davis

IPC分类号： H01M214

CPC分类号： H01M8/0271 ,  H01M8/0258 ,  H01M8/241 ,  H01M8/247 ,  H01M8/2483 ,  H01M2300/0082

摘要： An electrochemical fuel cell stack with improved reactant manifolding and sealing includes a pair of separator plates interposed between adjacent membrane electrode assemblies. Passageways fluidly interconnecting the anodes to a fuel manifold, and interconnecting the cathodes to an oxidant manifold, comprise at least one fluid passageway formed between adjoining non-active surfaces of the pairs of separator plates. The passageways extend through one or more ports penetrating the thickness of one of the plates thereby fluidly connecting the manifold to the opposite active surface of that plate, and the adjacent electrode. The ports comprise walls that have surfaces that are angled more than 0 degrees and less than 90 degrees with respect to the direction of fluid flow in the fluid passageway upstream of the port. During operation, electrochemical fuel cell stacks comprising fluid ports with angled walls benefit from reduced pressure loss. Turbulence, which is believed to have adverse effects on the membrane electrode assemblies of solid polymer fuel cells, is also reduced.

摘要翻译： 具有改进的反应物歧管和密封的电化学燃料电池堆包括插入在相邻膜电极组件之间的一对隔板。 将阳极流体地互连到燃料歧管并且将阴极互连到氧化剂歧管的通道包括形成在隔板对的相邻非活性表面之间的至少一个流体通道。 通道延伸穿过穿过其中一个板的厚度的一个或多个端口，从而将歧管流体连接到该板的相对的有效表面和相邻的电极。 端口包括具有相对于端口上游的流体通道中的流体流动方向成角度大于0度且小于90度的表面的壁。 在操作期间，包括具有成角度壁的流体端口的电化学燃料电池堆有利于降低压力损失。 被认为对固体聚合物燃料电池的膜电极组件具有不利影响的湍流也减少了。

公开(公告)号：US06997696B2

公开(公告)日：2006-02-14

申请号：US10442930

申请日：2003-05-21

申请人： Neil V. Davis ,  David Brown

发明人： Neil V. Davis ,  David Brown

IPC分类号： B29C69/00

CPC分类号： B26F3/04 ,  B26D2001/0053 ,  B26D2001/0086 ,  B26F1/40 ,  B26F1/42 ,  B26F1/44 ,  B26F2001/4472 ,  B26F2001/449 ,  H01M8/0213 ,  Y10T83/0215 ,  Y10T83/8799 ,  Y10T83/9387

摘要： In a method and apparatus for cutting expanded graphite sheet material, at least one cutting tool is urged against the sheet(s). The cutting tool has at least one ridge extending therefrom that includes a substantially tapered cross-section having sloping sides and an edge surface. At least a portion of the sheet material is displaced as the ridge is urged against the sheet. A region of the sheet material in contact with the ridge is compressed so that the density of the region reaches or exceeds the breaking density of the sheet.

公开(公告)号：US06649102B2

公开(公告)日：2003-11-18

申请号：US09772276

申请日：2001-01-29

申请人： Neil V. Davis ,  David Brown

发明人： Neil V. Davis ,  David Brown

IPC分类号： B29C5902

CPC分类号： B26F3/04 ,  B26D2001/0053 ,  B26D2001/0086 ,  B26F1/40 ,  B26F1/42 ,  B26F1/44 ,  B26F2001/4472 ,  B26F2001/449 ,  H01M8/0213 ,  Y10T83/0215 ,  Y10T83/8799 ,  Y10T83/9387

摘要： In a method and apparatus for cutting expanded graphite sheet material, at least one cutting tool is urged against the sheet(s). The cutting tool has at least one ridge extending therefrom, that includes a substantially tapered cross-section having sloping sides and an edge surface. At least a portion of the sheet material is displaced as the ridge is urged against the sheet. A region of the sheet material in contact with the ridge is compressed so that the density of the region reaches or exceeds the breaking density of the sheet.

摘要翻译： 在用于切割膨胀石墨片材的方法和装置中，至少一个切削工具被推靠在片材上。 切割工具具有从其延伸的至少一个脊，其包括具有倾斜侧面和边缘表面的基本上锥形的横截面。 当脊被推向片材时，片材的至少一部分被移位。 与脊接触的片材的区域被压缩，使得该区域的密度达到或超过片材的断裂密度。

公开(公告)号：US06607858B2

公开(公告)日：2003-08-19

申请号：US09822596

申请日：2001-03-30

申请人： Boguslaw M. Wozniczka ,  Mehrzad Tabatabaian ,  Neil V. Davis

发明人： Boguslaw M. Wozniczka ,  Mehrzad Tabatabaian ,  Neil V. Davis

IPC分类号： H01M214

CPC分类号： H01M8/0271 ,  H01M8/0258 ,  H01M8/241 ,  H01M8/247 ,  H01M8/2483 ,  H01M2300/0082

摘要： An electrochemical fuel cell stack with improved reactant manifolding and sealing includes a pair of separator plates interposed between adjacent membrane electrode assemblies. Passageways fluidly interconnecting the anodes to a fuel manifold, and interconnecting the cathodes to an oxidant manifold, comprise at least one fluid passageway formed between adjoining non-active surfaces of the pairs of separator plates. The passageways extend through one or more ports penetrating the thickness of one of the plates thereby fluidly connecting the manifold to the opposite active surface of that plate, and the adjacent electrode. The ports comprise walls that have surfaces that are angled more than 0 degrees and less than 90 degrees with respect to the direction of fluid flow in the fluid passageway upstream of the port. During operation, electrochemical fuel cell stacks comprising fluid ports with angled walls benefit from reduced pressure loss. Turbulence, which is believed to have adverse effects on the membrane electrode assemblies of solid polymer fuel cells, is also reduced.

摘要翻译： 具有改进的反应物歧管和密封的电化学燃料电池堆包括插入在相邻膜电极组件之间的一对隔板。 将阳极流体地互连到燃料歧管并将阴极互连到氧化剂歧管的通道包括形成在隔板对的相邻非活性表面之间的至少一个流体通道。 通道延伸穿过穿过其中一个板的厚度的一个或多个端口，从而将歧管流体连接到该板的相对的有效表面和相邻的电极。 端口包括具有相对于端口上游的流体通道中的流体流动方向成角度大于0度且小于90度的表面的壁。 在操作期间，包括具有成角度壁的流体端口的电化学燃料电池堆有利于降低压力损失。 被认为对固体聚合物燃料电池的膜电极组件具有不利影响的湍流也减少了。