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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
Applicant: Bloom Energy Corporation
Inventor： Daniel Darga , Cheng-Yu Lin , Vijay Srivatsan
IPC: H01M8/02 , H01M8/026 , H01M8/2483 , H01M8/0276 , H01M8/2425 , H01M8/124 , H01M8/0258
Abstract: 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：US09570769B2
公开(公告)日：2017-02-14
申请号：US14886893
申请日：2015-10-19
Applicant: BLOOM ENERGY CORPORATION
Inventor： Stephen Couse , Daniel Darga , Harald Herchen , Chockkalingam Karuppaiah
CPC classification number: H01M8/04201 , B22F3/02 , B22F3/12 , B22F5/00 , B22F5/10 , B22F2998/10 , C22C1/04 , H01M8/0202 , H01M8/0208 , H01M8/021 , H01M8/0247 , H01M8/0258 , H01M8/026 , H01M8/1246 , H01M8/2425 , H01M2008/1293 , Y02E60/50 , Y02E60/525 , B22F3/10
Abstract: Methods for fabricating an interconnect for a fuel cell stack include placing a compressed metal powder interconnect on a porous support, and sintering the interconnect in the presence of a non-oxidizing gas. The method may further include placing the sintered interconnect on a porous support, and oxidizing the interconnect in the presence of flowing air, or placing the sintered interconnect on a dense, non-porous support, and oxidizing the interconnect in the presence of a gas comprising pure oxygen or an oxygen/inert gas mixture that is substantially nitrogen-free.
Abstract translation: 用于制造用于燃料电池堆的互连的方法包括将压缩的金属粉末互连件放置在多孔载体上，以及在非氧化性气体的存在下烧结互连。 该方法还可以包括将烧结的互连件放置在多孔载体上，并在存在流动空气的情况下氧化互连，或将烧结的互连件放置在致密的无孔支撑体上，以及在包含 纯氧或基本上无氮的氧/惰性气体混合物。
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公开(公告)号：US20140127603A1
公开(公告)日：2014-05-08
申请号：US14072381
申请日：2013-11-05
Applicant: Bloom Energy Corporation
Inventor： Paturi Balaji Narasimha Prasad , Ramesha Guntanur , Ananda Sundararajan , Ram Ramanan , Daniel Darga
IPC: H01M8/02
CPC classification number: H01M8/0247 , H01M8/0228 , H01M8/0258 , H01M8/0276 , H01M2008/1293 , Y02E60/50 , Y02E60/525
Abstract: 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：US20130230644A1
公开(公告)日：2013-09-05
申请号：US13781206
申请日：2013-02-28
Applicant: BLOOM ENERGY CORPORATION
Inventor： Tad Armstrong , James Wilson , Harald Herchen , Daniel Darga , Manoj Pillai
IPC: H01M8/02
CPC classification number: H01M8/0228 , B22F3/162 , B22F5/00 , B22F7/008 , B22F7/02 , B22F7/04 , B22F7/06 , B22F2998/10 , C22C27/06 , C23C4/02 , C23C4/11 , C23C4/134 , C23C4/18 , C23C24/06 , C23C24/082 , C23C28/04 , H01M8/0208 , H01M8/0245 , H01M8/12 , H01M2008/1293 , H01M2300/0074 , Y02E60/50 , Y02E60/525
Abstract: Various methods of treating a chromium iron interconnect for a solid oxide fuel cell stack and coating the interconnect with a ceramic layer are provided.
Abstract translation: 提供了用于固体氧化物燃料电池堆处理铬铁互连以及用陶瓷层涂覆互连的各种方法。
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5.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
Applicant: BLOOM ENERGY CORPORATION
Inventor： Cheng-Yu Lin , Daniel Darga , Michael Groesch , Harald Herchen , Vijay Srivatsan
CPC classification number: G01N25/16 , G01N27/026
Abstract: 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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Patent Agency Ranking
公开(公告)号：US09368810B2
公开(公告)日：2016-06-14
申请号：US14072499
申请日：2013-11-05
Applicant: Bloom Energy Corporation
Inventor： Daniel Darga , Vijay Srivatsan , Matthias Gottmann , Ram Ramanan , Paturi Balaji Narasimha Prasad , Ramesha Guntanur
CPC classification number: H01M8/0247 , H01M8/0228 , H01M8/0258 , H01M8/0276 , H01M2008/1293 , Y02E60/50 , Y02E60/525
Abstract: 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：US20160043415A1
公开(公告)日：2016-02-11
申请号：US14886893
申请日：2015-10-19
Applicant: BLOOM ENERGY CORPORATION
Inventor： Stephen Couse , Daniel Darga , Harald Herchen , Chockkalingam Karuppaiah
CPC classification number: H01M8/04201 , B22F3/02 , B22F3/12 , B22F5/00 , B22F5/10 , B22F2998/10 , C22C1/04 , H01M8/0202 , H01M8/0208 , H01M8/021 , H01M8/0247 , H01M8/0258 , H01M8/026 , H01M8/1246 , H01M8/2425 , H01M2008/1293 , Y02E60/50 , Y02E60/525 , B22F3/10
Abstract: Methods for fabricating an interconnect for a fuel cell stack include placing a compressed metal powder interconnect on a porous support, and sintering the interconnect in the presence of a non-oxidizing gas. The method may further include placing the sintered interconnect on a porous support, and oxidizing the interconnect in the presence of flowing air, or placing the sintered interconnect on a dense, non-porous support, and oxidizing the interconnect in the presence of a gas comprising pure oxygen or an oxygen/inert gas mixture that is substantially nitrogen-free.
Abstract translation: 用于制造用于燃料电池堆的互连的方法包括将压缩的金属粉末互连件放置在多孔载体上，以及在非氧化性气体的存在下烧结互连。 该方法还可以包括将烧结的互连件放置在多孔载体上，并在存在流动空气的情况下氧化互连，或将烧结的互连件放置在致密的无孔支撑体上，以及在包含 纯氧或基本上无氮的氧/惰性气体混合物。
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公开(公告)号：US20130130154A1
公开(公告)日：2013-05-23
申请号：US13678981
申请日：2012-11-16
Applicant: BLOOM ENERGY CORPORATION
Inventor： Daniel Darga , Harald Herchen , Chockkalingam Karuppaiah , Ravi Oswal , Shivanand Majagi
IPC: H01M8/02
CPC classification number: H01M8/04201 , B22F3/02 , B22F3/12 , B22F5/00 , B22F5/10 , B22F2998/10 , C22C1/04 , H01M8/0202 , H01M8/0208 , H01M8/021 , H01M8/0247 , H01M8/0258 , H01M8/026 , H01M8/1246 , H01M8/2425 , H01M2008/1293 , Y02E60/50 , Y02E60/525 , B22F3/10
Abstract: Methods for fabricating an interconnect for a fuel cell stack include placing a compressed metal powder interconnect on a porous support, and sintering the interconnect in the presence of a non-oxidizing gas. The method may further include placing the sintered interconnect on a porous support, and oxidizing the interconnect in the presence of flowing air, or placing the sintered interconnect on a dense, non-porous support, and oxidizing the interconnect in the presence of a gas comprising pure oxygen or an oxygen/inert gas mixture that is substantially nitrogen-free.
Abstract translation: 用于制造用于燃料电池堆的互连的方法包括将压缩的金属粉末互连件放置在多孔载体上，以及在非氧化性气体的存在下烧结互连。 该方法还可以包括将烧结的互连件放置在多孔载体上，并在存在流动空气的情况下氧化互连，或将烧结的互连件放置在致密的无孔支撑体上，以及在包含 纯氧或基本上无氮的氧/惰性气体混合物。
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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
Applicant: BLOOM ENERGY CORPORATION
Inventor： Daniel Darga , Cheng-Yu Lin , Vijay Srivatsan
IPC: H01M8/026 , H01M8/2483 , H01M8/0276 , H01M8/2425 , H01M8/12 , H01M8/0258 , H01M8/2432 , H01M8/0265
CPC classification number: H01M8/026 , H01M8/0276 , H01M8/2425 , H01M8/2483 , H01M8/0258 , H01M8/0265 , H01M8/2432 , H01M2008/1293 , Y02E60/50
Abstract: 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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10.发明授权公开(公告)号：US10962492B2
公开(公告)日：2021-03-30
申请号：US15927415
申请日：2018-03-21
Applicant: BLOOM ENERGY CORPORATION
Inventor： Cheng-Yu Lin , Daniel Darga , Michael Groesch , Harald Herchen , Vijay Srivatsan
Abstract: 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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