公开(公告)号：US09847520B1

公开(公告)日：2017-12-19

申请号：US13939814

申请日：2013-07-11

Applicant: Bloom Energy Corporation

Inventor： Shivanand Majagi ,  Harald Herchen ,  Sanjiv Kapoor ,  Michael Gasda ,  Chung-Dee Pong ,  Avinash Verma

IPC: C22F1/11 ,  H01M2/14 ,  H01M2/20

CPC classification number: H01M2/202 ,  C22F1/11 ,  H01M2/208 ,  H01M8/0208 ,  H01M8/0215 ,  H01M8/0228 ,  H01M2008/1293

Abstract: Various embodiments include methods of fabricating an interconnect for a fuel cell stack. Methods for controlled pre-oxidation of an interconnect include oxidizing in a nitride-inhibiting environment to inhibit the formation of nitrides.

公开(公告)号：US12119521B2

公开(公告)日：2024-10-15

申请号：US16653145

申请日：2019-10-15

Applicant: BLOOM ENERGY CORPORATION

Inventor： Michael Petrucha ,  James Huynh ,  Avinash Verma ,  Martin Perry ,  Kyle Kekelis

IPC: H01M8/2483 ,  B23K1/00 ,  F16L9/06 ,  F16L9/14 ,  F16L13/08 ,  H01M8/04082 ,  B23K101/36 ,  B23K103/00 ,  B23K103/04 ,  H01M8/12

CPC classification number: H01M8/04216 ,  B23K1/0016 ,  F16L9/06 ,  F16L9/14 ,  F16L13/08 ,  H01M8/2483 ,  B23K2101/36 ,  B23K2103/04 ,  B23K2103/52 ,  H01M2008/1293

Abstract: A conduit assembly includes a dielectric tube having a first end and a second end, a first metal tube including a first flange coupled to the first end of the inner dielectric tube, the first flange including relief openings, a first dielectric ring coupled to the first flange, a second metal tube including a second flange coupled to the second end of the inner dielectric tube, the second flange including relief openings, and a second dielectric ring coupled to the second flange.

公开(公告)号：US20150221957A1

公开(公告)日：2015-08-06

申请号：US14687365

申请日：2015-04-15

Applicant: BLOOM ENERGY CORPORATION

Inventor： Harald Herchen ,  Chockkalingam Karuppaiah ,  Tad Armstrong ,  Avinash Verma

IPC: H01M8/02 ,  B22F5/00 ,  B22F7/08 ,  B22F3/02

CPC classification number: B22F7/08 ,  B22F3/02 ,  B22F3/08 ,  C22C1/045 ,  C23C24/02 ,  H01M8/0206 ,  H01M8/0215 ,  H01M8/0228 ,  H01M2008/1293 ,  Y02P70/56

Abstract: Methods of fabricating an interconnect for a fuel cell stack include providing a powder in a die cavity of a powder press apparatus, where the powder includes at least one of a pre-alloyed powder and a pre-sintered powder, compressing the powder in the die cavity of the powder press apparatus using high velocity compaction to form a pressed powder interconnect, and incorporating the pressed powder interconnect into a fuel cell stack, wherein the pressed powder interconnect is incorporated into the fuel cell stack without first sintering the pressed powder interconnect.

Abstract translation: 制造用于燃料电池堆的互连的方法包括在粉末压制装置的模腔中提供粉末，其中粉末包括预合金粉末和预烧结粉末中的至少一种，将模具中的粉末压缩 使用高速压实的粉末压制装置的空腔形成压制粉末互连，并将挤压的粉末互连结合到燃料电池堆中，其中将压制的粉末互连件并入燃料电池堆中而不首先烧结压制的粉末互连。

公开(公告)号：US10511047B2

公开(公告)日：2019-12-17

申请号：US15422677

申请日：2017-02-02

Applicant: BLOOM ENERGY CORPORATION

Inventor： Tad Armstrong ,  Martin Perry ,  Avinash Verma ,  Michael Petrucha ,  Dongai Shi ,  Cheng-Yu Lin ,  Shruti Baharani

IPC: H01M8/04082 ,  H01M8/2457 ,  H01M8/2483 ,  H01M8/241 ,  H01M8/04089 ,  B22F7/08 ,  H01M8/0297 ,  C22C38/18 ,  H01M8/021 ,  C22C27/06 ,  C22C19/05 ,  B23K35/30 ,  C22C38/00 ,  B23K35/02

Abstract: Various embodiments of a reactant feed and return assembly, such as an anode splitter plate (ASP), are provided for facilitating reactant feed and exhaust flow in a solid oxide fuel cell (SOFC) stack system. Embodiments include a reactant feed and return assembly including at least a first portion formed of a chromium-based alloy, such as a chromium-iron alloy, having a similar coefficient of thermal expansion as other SOFC components and may therefore reduce internal stress in an SOFC stack. Methods for making an a reactant feed and return assembly comprising a chromium-based alloy are also provided.

公开(公告)号：US11962041B2

公开(公告)日：2024-04-16

申请号：US17221147

申请日：2021-04-02

Applicant: BLOOM ENERGY CORPORATION

Inventor： Avinash Verma ,  Chockkalingam Karuppaiah ,  Harald Herchen ,  Cheng-Yu Lin ,  Martin Perry

IPC: H01M50/522 ,  B22F3/24 ,  B22F10/28 ,  B22F10/50 ,  B22F10/62 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00 ,  H01M8/0208

CPC classification number: H01M50/522 ,  B22F10/28 ,  B22F10/50 ,  B22F10/62 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00 ,  H01M8/0208 ,  B22F2003/242 ,  B22F2201/03 ,  B22F2201/11 ,  B22F2301/20 ,  B22F2301/35 ,  B22F2998/10 ,  B33Y10/00

Abstract: A method of forming a fuel cell interconnect includes depositing a Cr alloy powder, sintering the Cr alloy powder, and repeating the depositing and the sintering to form the fuel cell interconnect. The Cr alloy powder may include a pre-alloyed powder containing from about 4 wt. % to about 6 wt. % Fe, and from about 94 wt. % to about 96 wt. % Cr.

公开(公告)号：US10916793B2

公开(公告)日：2021-02-09

申请号：US16126202

申请日：2018-09-10

Applicant: BLOOM ENERGY CORPORATION

Inventor： David Edmonston ,  Michael Petrucha ,  Martin Perry ,  Avinash Verma

IPC: H01M8/2475 ,  H01M8/0282

Abstract: A fuel cell stack assembly includes a fuel cell stack column, and side baffles disposed on opposing sides of the column. The side baffles include side baffle plates containing at least one ceramic matrix composite (CMC) panel having at least one hole, and at least one denser ceramic element joined to the at least one CMC panel at the hole in the CMC panel.

公开(公告)号：US10079393B1

公开(公告)日：2018-09-18

申请号：US14592338

申请日：2015-01-08

Applicant: BLOOM ENERGY CORPORATION

Inventor： Avinash Verma ,  Ravi Oswal ,  Brandon Dawson ,  Brian Bollinger ,  Harald Herchen ,  Tad Armstrong

IPC: H01M8/02 ,  H01M8/0245 ,  B22F7/02 ,  B22F7/04 ,  B22F7/00 ,  B22F3/12 ,  B22F3/24 ,  B22F3/26 ,  B22F5/00 ,  B05D3/02 ,  H01M8/0202 ,  H01M8/12

CPC classification number: H01M8/0202 ,  B22F5/006 ,  B22F7/008 ,  B22F7/02 ,  B22F7/04 ,  B22F2003/248 ,  B22F2007/045 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0408 ,  C22C1/0433 ,  C22C33/0207 ,  H01M8/0206 ,  H01M8/021 ,  H01M8/0217 ,  H01M8/0228 ,  H01M2008/1293 ,  B22F2201/03 ,  B22F1/0011 ,  B22F1/0096 ,  B22F3/02 ,  B22F3/10 ,  B22F7/062

Abstract: Methods for fabricating an interconnect for a fuel cell stack that include providing a protective layer over at least one surface of an interconnect formed by powder pressing pre-alloyed particles containing two or more metal elements and annealing the interconnect and the protective layer at elevated temperature to bond the protective layer to the at least one surface of the interconnect.

公开(公告)号：US09478812B1

公开(公告)日：2016-10-25

申请号：US14054952

申请日：2013-10-16

Applicant: Bloom Energy Corporation

Inventor： Daniel Darga ,  Avinash Verma ,  Stephen Couse ,  Tad Armstrong

IPC: H01M8/02

CPC classification number: H01M8/0247 ,  H01M8/0206 ,  H01M8/0273 ,  H01M8/2483

Abstract: Various embodiments include interconnects for a fuel cell stack that includes a first support frame having a first surface that is configured to be secured to a first surface of a fuel cell. A gas flow separator section is secured to a second surface of the first support frame, opposite the first surface of the first support frame. A second support frame is secured to a second surface of a second fuel cell, opposite the first surface of the first fuel cell. The first and second support frames have a coefficient of thermal expansion (CTE) that substantially matches the CTE of the electrolyte material of the fuel cells, and the gas flow separator section has a CTE that does not substantially match a CTE of an electrolyte material of the fuel cells.

Abstract translation: 各种实施例包括用于燃料电池堆的互连，其包括第一支撑框架，该第一支撑框架具有构造成固定到燃料电池的第一表面的第一表面。 气流分离器部分固定到第一支撑框架的与第一支撑框架的第一表面相对的第二表面。 第二支撑框架固定到第二燃料电池的与第一燃料电池的第一表面相对的第二表面。 第一和第二支撑框架具有基本上与燃料电池的电解质材料的CTE匹配的热膨胀系数（CTE），并且气体流动分离器部分具有基本上不匹配电解质材料的CTE的CTE 燃料电池。