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公开(公告)号：US11217797B2
公开(公告)日：2022-01-04
申请号：US14011804
申请日：2013-08-28
发明人： Daniel Darga , Cheng-Yu Lin , Vijay Srivatsan
IPC分类号： H01M8/02 , H01M8/026 , H01M8/2483 , H01M8/0276 , H01M8/2425 , H01M8/124 , H01M8/0258
摘要： Various embodiments include fuel cell interconnects having a fuel distribution portion having an inlet opening, a fuel collection portion having an outlet opening, and a primary fuel flow field containing channels, wherein the fuel distribution portion comprises at least one raised feature defining a fuel distribution flow path, and the fuel distribution flow path is not continuous with the channels in the primary fuel flow field. The at least one raised feature may include, for example, a network of ribs and/or dots. Further embodiments include interconnects having a fuel distribution portion with a variable surface depth to provide variable flow restriction and/or a plenum with variable surface depth and raised a raised relief feature on the cathode side, and/or varying flow channel depths and/or rib heights adjacent a fuel hole.
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公开(公告)号：US09673457B2
公开(公告)日：2017-06-06
申请号：US14072375
申请日：2013-11-05
发明人： Vijay Srivatsan , Michael Groesch , Daniel Darga , Matthias Gottmann , Ram Ramanan , Paturi Balaji Narasimha Prasad , Ramesha Guntanur , Ananda Sundararajan , Sachin Parhar
IPC分类号： H01M8/0247 , H01M8/0276 , H01M8/0228 , H01M8/0258 , H01M8/124
CPC分类号： H01M8/0247 , H01M8/0228 , H01M8/0258 , H01M8/0276 , H01M2008/1293 , Y02E60/50 , Y02E60/525
摘要： Various embodiments include interconnects and/or end plates having features for reducing stress in a fuel cell stack. In embodiments, an interconnect/end plate may have a window seal area that is recessed relative to the flow field to indirectly reduce stress induced by an interface seal. Other features may include a thicker protective coating and/or larger uncoated area of an end plate, providing a recessed portion on an end plate for an interface seal, and/or recessing the fuel hole region of an interconnect relative to the flow field to reduce stress on the fuel cell. Further embodiments include providing intermittent seal support to minimize asymmetric seal loading and/or a non-circular seal configuration to reduce stress around the fuel hole of a fuel cell.
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公开(公告)号：US20140127604A1
公开(公告)日：2014-05-08
申请号：US14072499
申请日：2013-11-05
发明人： Daniel Darga , Vijay Srivatsan , Matthias Gottmann , Ram Ramanan , Paturi Balaji Narasimha Prasad , Ramesha Guntanur
IPC分类号： H01M8/02
CPC分类号： H01M8/0247 , H01M8/0228 , H01M8/0258 , H01M8/0276 , H01M2008/1293 , Y02E60/50 , Y02E60/525
摘要： Various embodiments include interconnects and/or end plates having features for reducing stress in a fuel cell stack. In embodiments, an interconnect/end plate may have a window seal area that is recessed relative to the flow field to indirectly reduce stress induced by an interface seal. Other features may include a thicker protective coating and/or larger uncoated area of an end plate, providing a recessed portion on an end plate for an interface seal, and/or recessing the fuel hole region of an interconnect relative to the flow field to reduce stress on the fuel cell. Further embodiments include providing intermittent seal support to minimize asymmetric seal loading and/or a non-circular seal configuration to reduce stress around the fuel hole of a fuel cell.
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4.发明授权公开(公告)号：US09958406B1
公开(公告)日：2018-05-01
申请号：US14559214
申请日：2014-12-03
发明人： Cheng-Yu Lin , Daniel Darga , Michael Groesch , Harald Herchen , Vijay Srivatsan
CPC分类号： G01N25/16 , G01N27/026
摘要： Methods and systems for measuring and/or estimating a coefficient of thermal expansion (CTE) of a component of a fuel cell system. A CTE measurement technique includes securing a measurement member over a surface of the component via a seal having a melting point, heating the seal above its melting point of the seal, cooling the component, measurement member and seal to a second temperature below the melting point of the seal, and determining the CTE of the component based on the change in the span of the measurement member after cooling. A fuel cell component characterization technique includes measuring an electrical resistivity (ER), conductivity (EC), resistance or conductance of the component, measuring at least one additional property of the component which, together with ER, EC, resistance or conductance, correlates to the CTE of the component, and sorting the component based on the measurements.
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公开(公告)号：US09368810B2
公开(公告)日：2016-06-14
申请号：US14072499
申请日：2013-11-05
发明人： Daniel Darga , Vijay Srivatsan , Matthias Gottmann , Ram Ramanan , Paturi Balaji Narasimha Prasad , Ramesha Guntanur
CPC分类号： H01M8/0247 , H01M8/0228 , H01M8/0258 , H01M8/0276 , H01M2008/1293 , Y02E60/50 , Y02E60/525
摘要： Various embodiments include interconnects and/or end plates having features for reducing stress in a fuel cell stack. In embodiments, an interconnect/end plate may have a window seal area that is recessed relative to the flow field to indirectly reduce stress induced by an interface seal. Other features may include a thicker protective coating and/or larger uncoated area of an end plate, providing a recessed portion on an end plate for an interface seal, and/or recessing the fuel hole region of an interconnect relative to the flow field to reduce stress on the fuel cell. Further embodiments include providing intermittent seal support to minimize asymmetric seal loading and/or a non-circular seal configuration to reduce stress around the fuel hole of a fuel cell.
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公开(公告)号：US11916263B2
公开(公告)日：2024-02-27
申请号：US17662956
申请日：2022-05-11
发明人： Michael Gasda , Vijay Srivatsan , Robert M. Hintz , Swaminathan Venkataraman , Padiadpu Shankara Anantha , Emad El Batawi , Cheng-Yu Lin , Sagar Mainkar , Gilbert Richards , Jonathan Scholl
IPC分类号： H01M8/0247 , H01M8/2425 , H01M8/0258 , H01M8/12
CPC分类号： H01M8/0247 , H01M8/0258 , H01M8/2425 , H01M2008/1293
摘要： A cross-flow interconnect and a fuel cell stack including the same, the interconnect including fuel inlets and outlets that extend through the interconnect adjacent to opposing first and second peripheral edges of the interconnect; an air side; and an opposing fuel side. The air side includes an air flow field including air channels that extend in a first direction, from a third peripheral edge of the interconnect to an opposing fourth peripheral edge of the interconnect; and riser seal surfaces disposed on two opposing sides of the air flow field and in which the fuel inlets and outlets are formed. The fuel side includes a fuel flow field including fuel channels that extend in a second direction substantially perpendicular to the first direction, between the fuel inlets and outlets; and a perimeter seal surface surrounding the fuel flow field and the fuel inlets and outlets.
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7.发明申请公开(公告)号：US20180217075A1
公开(公告)日：2018-08-02
申请号：US15927415
申请日：2018-03-21
发明人： Cheng-Yu Lin , Daniel Darga , Michael Groesch , Harald Herchen , Vijay Srivatsan
CPC分类号： G01N25/16 , G01N27/026
摘要： Methods and systems for measuring and/or estimating a coefficient of thermal expansion (CTE) of a component of a fuel cell system. A CTE measurement technique includes securing a measurement member over a surface of the component via a seal having a melting point, heating the seal above its melting point of the seal, cooling the component, measurement member and seal to a second temperature below the melting point of the seal, and determining the CTE of the component based on the change in the span of the measurement member after cooling. A fuel cell component characterization technique includes measuring an electrical resistivity (ER), conductivity (EC), resistance or conductance of the component, measuring at least one additional property of the component which, together with ER, EC, resistance or conductance, correlates to the CTE of the component, and sorting the component based on the measurements.
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公开(公告)号：US20140127602A1
公开(公告)日：2014-05-08
申请号：US14072375
申请日：2013-11-05
发明人： Vijay Srivatsan , Michael Groesch , Daniel Darga , Matthias Gottmann , Ram Ramanan , Paturi Balaji Narasimha Prasad , Ramesha Guntanur , Ananda Sundararajan , Sachin Parhar
IPC分类号： H01M8/02
CPC分类号： H01M8/0247 , H01M8/0228 , H01M8/0258 , H01M8/0276 , H01M2008/1293 , Y02E60/50 , Y02E60/525
摘要： Various embodiments include interconnects and/or end plates having features for reducing stress in a fuel cell stack. In embodiments, an interconnect/end plate may have a window seal area that is recessed relative to the flow field to indirectly reduce stress induced by an interface seal. Other features may include a thicker protective coating and/or larger uncoated area of an end plate, providing a recessed portion on an end plate for an interface seal, and/or recessing the fuel hole region of an interconnect relative to the flow field to reduce stress on the fuel cell. Further embodiments include providing intermittent seal support to minimize asymmetric seal loading and/or a non-circular seal configuration to reduce stress around the fuel hole of a fuel cell.
摘要翻译： 各种实施例包括具有用于减少燃料电池堆中的应力的特征的互连和/或端板。 在实施例中，互连/端板可以具有相对于流场凹陷的窗口密封区域，以间接地减小由界面密封引起的应力。 其他特征可以包括较厚的保护涂层和/或端板的较大的未涂覆区域，在端板上提供用于界面密封件的凹陷部分和/或使互连件的燃料孔区域相对于流场凹陷以减少 对燃料电池的压力。 进一步的实施例包括提供间歇密封支撑以最小化非对称密封装载和/或非圆形密封构型以减少燃料电池燃料孔附近的应力。
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公开(公告)号：US11705557B2
公开(公告)日：2023-07-18
申请号：US17324283
申请日：2021-05-19
发明人： Daniel Darga , Cheng-Yu Lin , Vijay Srivatsan
IPC分类号： H01M8/026 , H01M8/2483 , H01M8/0276 , H01M8/2425 , H01M8/12 , H01M8/0258 , H01M8/2432 , H01M8/0265
CPC分类号： H01M8/026 , H01M8/0276 , H01M8/2425 , H01M8/2483 , H01M8/0258 , H01M8/0265 , H01M8/2432 , H01M2008/1293 , Y02E60/50
摘要： Various embodiments include fuel cell interconnects having a fuel distribution portion having an inlet opening, a fuel collection portion having an outlet opening, and a primary fuel flow field containing channels, wherein the fuel distribution portion comprises at least one raised feature defining a fuel distribution flow path, and the fuel distribution flow path is not continuous with the channels in the primary fuel flow field. The at least one raised feature may include, for example, a network of ribs and/or dots. Further embodiments include interconnects having a fuel distribution portion with a variable surface depth to provide variable flow restriction and/or a plenum with variable surface depth and raised a raised relief feature on the cathode side, and/or varying flow channel depths and/or rib heights adjacent a fuel hole.
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公开(公告)号：US11355762B2
公开(公告)日：2022-06-07
申请号：US16424930
申请日：2019-05-29
发明人： Michael Gasda , Vijay Srivatsan , Robert M. Hintz , Swaminathan Venkataraman , Padiadpu Shankara Anantha , Emad El Batawi , Cheng-Yu Lin , Sagar Mainkar , Gilbert Richards , Jonathan Scholl
IPC分类号： H01M8/0247 , H01M8/2425 , H01M8/0258 , H01M8/12
摘要： A cross-flow interconnect and a fuel cell stack including the same, the interconnect including fuel inlets and outlets that extend through the interconnect adjacent to opposing first and second peripheral edges of the interconnect; an air side; and an opposing fuel side. The air side includes an air flow field including air channels that extend in a first direction, from a third peripheral edge of the interconnect to an opposing fourth peripheral edge of the interconnect; and riser seal surfaces disposed on two opposing sides of the air flow field and in which the fuel inlets and outlets are formed. The fuel side includes a fuel flow field including fuel channels that extend in a second direction substantially perpendicular to the first direction, between the fuel inlets and outlets; and a perimeter seal surface surrounding the fuel flow field and the fuel inlets and outlets.
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