公开(公告)号：US20170062851A1

公开(公告)日：2017-03-02

申请号：US14695734

申请日：2015-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： MARK F. MATHIAS ,  JINGXIN ZHANG ,  BALASUBRAMANIAN LAKSHMANAN ,  MANISH SINHA

IPC: H01M8/04291 ,  H01M8/04492 ,  H01M8/241 ,  B60L11/18 ,  H01M4/92 ,  H01M8/2457 ,  H01M8/0258 ,  H01M8/10 ,  H01M8/04089 ,  H01M4/90

CPC classification number: H01M8/04291 ,  B60L58/30 ,  H01M4/9025 ,  H01M4/92 ,  H01M8/0258 ,  H01M8/04089 ,  H01M8/04104 ,  H01M8/04529 ,  H01M8/10 ,  H01M8/241 ,  H01M8/2457 ,  H01M8/2484 ,  H01M2004/8684 ,  H01M2004/8689 ,  H01M2008/1095 ,  H01M2250/20 ,  H01M2300/0082 ,  Y02T90/32

Abstract: Systems and methods are disclosed that provide for a fuel cell stack assembly including stack end cells that facilitate improved diagnostic and detection capabilities. In certain embodiments, an anode side of a FC stack end cell consistent with embodiments disclosed herein may be configured to have a lower anode gas flow rate than other cells in the FC stack. The cathode side of a FC stack end cell consistent with embodiments disclosed herein may be further configured to have a higher gas flow rate than other cells in the FC stack. Embodiments of the disclosed FC stack end cells may, among other things, allow for detection of adverse conditions and/or events in a FC stack assembly prior to such conditions and/or events negatively affecting other cells in the FC stack.

Abstract translation: 公开了提供用于燃料电池堆组件的系统和方法，所述燃料电池堆组件包括促进改进的诊断和检测能力的堆叠端电池。 在某些实施例中，与本文公开的实施例一致的FC堆叠端单元的阳极侧可被配置为具有比FC堆叠中的其它单元更低的阳极气体流速。 与本文公开的实施例一致的FC堆叠端单元的阴极侧可进一步配置为具有比FC堆叠中的其它单元更高的气体流速。 所公开的FC堆栈端单元的实施例尤其可以在对FC堆栈中的其它单元造成负面影响的这些条件和/或事件之前允许检测FC堆叠组件中的不利条件和/或事件。

公开(公告)号：US20180269505A1

公开(公告)日：2018-09-20

申请号：US15463861

申请日：2017-03-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： JEFFREY J. GAGLIARDO ,  JEREMY W. DABEL ,  BALASUBRAMANIAN LAKSHMANAN

IPC: H01M8/04746

CPC classification number: H01M8/04753

Abstract: A method for controlling a pressure drop across the anode side or the cathode side of a fuel cell stack by controlling the intrusion of a cell separator into the flow channels in a feeder region of the stack so as to create a larger pressure volume on a pressure bias side of the stack. The method controls the flow rates of one or both of the cathode and anode reactant gases so as to cause the cell separators in an inlet feeder region and/or an outlet feeder region to move relative to the anode side and the cathode side so as to change a flow volume in the inlet feeder region and/or the outlet feeder region to control the pressure drop.

公开(公告)号：US20190002279A1

公开(公告)日：2019-01-03

申请号：US15637661

申请日：2017-06-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： WILLIAM J. DWYER ,  JEFFREY J. GAGLIARDO ,  PAMELA M. VECASEY ,  BALASUBRAMANIAN LAKSHMANAN

IPC: C01B3/50 ,  H01M8/1004 ,  C01B3/00 ,  G01R22/06

CPC classification number: C01B3/50 ,  C01B3/0078 ,  G01R22/06 ,  H01M8/1004 ,  H01M8/188

Abstract: A system and method for determining the purity level of hydrogen gas fuel provided to an anode side of a fuel cell stack, and then modifying models and algorithms used by the system based on the purity level. The method includes determining whether predetermined criteria have been met that are necessary to obtain an accurate hydrogen gas fuel purity level, and if so, comparing a measured voltage or current of the fuel cell stack to a modeled voltage or current of the fuel cell stack. If the comparison between the measured voltage or current and the modeled voltage or current is greater than a predetermined threshold, then the method adapts a hydrogen gas concentration value to a lower purity level to be used by downstream models.

公开(公告)号：US20180131015A1

公开(公告)日：2018-05-10

申请号：US15863341

申请日：2018-01-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SMURUTHI KAMEPALLI ,  BALASUBRAMANIAN LAKSHMANAN

IPC: C23C16/26 ,  C23C16/50 ,  C23C16/455

CPC classification number: H01M8/0213 ,  C23C16/26 ,  C23C16/45525 ,  C23C16/45555 ,  C23C16/50 ,  H01M8/0206 ,  H01M8/0228 ,  H01M8/0258 ,  H01M2008/1095

Abstract: A flow field plate for a fuel cell includes an electrically conductive substrate at least partially defining a plurality of flow channels. A carbon layer is disposed over the flow field plate. The carbon layer includes graphene, carbon nanotubes, or combinations thereof and has a thickness less than about 10 nanometers. Chemical vapor deposition and atomic layer deposition processes for forming graphene layers on a flow field plate are also described.

公开(公告)号：US20180013153A1

公开(公告)日：2018-01-11

申请号：US15205454

申请日：2016-07-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SMURUTHI KAMEPALLI ,  BALASUBRAMANIAN LAKSHMANAN ,  ELIZABETH DICOCCO

IPC: H01M8/0258 ,  H01M8/1007 ,  H01M8/1004 ,  H01M8/1018

CPC classification number: H01M8/0258 ,  H01M8/0208 ,  H01M8/0228 ,  H01M8/1004 ,  H01M8/1007 ,  H01M8/1018

Abstract: A fuel cell flow field plate includes an aluminum substrate plate having a first side and a second side wherein the first side of the aluminum substrate plate defines a plurality of channels for transporting a first fuel cell reactant gas. The flow field plate also includes a first metal interlayer deposited on the first side of the aluminum substrate plate, a second metal interlayer deposited on the second side of the aluminum substrate plate, a first amorphous carbon layer deposited on the first metal interlayer, and a second amorphous carbon layer deposited on the second metal interlayer. The first amorphous carbon layer and second amorphous carbon layer each independently have a density greater than or equal to 1.2 g/cc.

公开(公告)号：US20170117565A1

公开(公告)日：2017-04-27

申请号：US15286186

申请日：2016-10-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： QIANG LI ,  PAUL TAICHIANG YU ,  JINGXIN ZHANG ,  BALASUBRAMANIAN LAKSHMANAN

IPC: H01M8/0662 ,  H01M8/2457 ,  B60L11/18 ,  H01M8/1039 ,  H01M8/1004 ,  H01M8/1007 ,  H01M8/04089 ,  H01M8/241

CPC classification number: H01M8/0687 ,  B60L50/72 ,  H01M8/04097 ,  H01M8/04141 ,  H01M8/0662 ,  H01M8/1004 ,  H01M8/1007 ,  H01M8/1039 ,  H01M8/241 ,  H01M8/2457 ,  H01M2008/1095 ,  H01M2250/20 ,  H01M2300/0082

Abstract: A fuel cell system that includes a component for removing anionic contaminants is provided. The fuel system including a fuel cell stack, a fuel gas feed subsystem in communication with fuel cell anodes in the fuel cell stack, an oxygen-containing gas feed subsystem system in communication with fuel cell cathodes in the fuel cell stack, and an anionic scavenging subsystem in communication with the fuel gas feed subsystem and/or the an oxygen-containing gas feed subsystem.

公开(公告)号：US20160087288A1

公开(公告)日：2016-03-24

申请号：US14495369

申请日：2014-09-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： ANDREW J. MASLYN ,  SERGIO E. GARCIA ,  BALASUBRAMANIAN LAKSHMANAN ,  MARK P. ADAMS

IPC: H01M8/04

CPC classification number: H01M8/04097 ,  H01M8/04111 ,  H01M8/04455 ,  H01M8/04559 ,  H01M8/04753 ,  H01M8/04761 ,  H01M2250/20 ,  Y02T90/32

Abstract: Systems and methods for improving conditions for anion contaminant removal in a cathode of a PEMFC system are presented. A fuel cell system consistent with certain embodiments may include a cathode compartment having a compressor coupled thereto. The compressor may be configured to receive an input cathode gas via a compressor input and supply the input cathode gas to the cathode compartment via a compressor output. The fuel cell system may further include a cathode gas recirculation value coupled to the cathode compartment configured to receive a cathode exhaust gas output and to selectively provide at least a portion of the cathode exhaust gas output to the compressor input. Consistent with certain embodiments disclosed herein, the compressor may be further configured to supply at least a portion of the cathode exhaust gas output to the cathode compartment via the compressor output.

Abstract translation: 提出了改进PEMFC系统阴极中阴离子污染物去除条件的系统和方法。 符合某些实施例的燃料电池系统可以包括具有与其耦合的压缩机的阴极室。 压缩机可经配置以经由压缩机输入接收输入阴极气体，并通过压缩机输出将输入阴极气体供应至阴极室。 燃料电池系统还可以包括耦合到阴极室的阴极气体再循环值，其构造成接收阴极废气输出并且选择性地将至少一部分阴极废气输出输出到压缩机输入端。 与本文公开的某些实施例一致，压缩机可以被进一步配置成经由压缩机输出将至少一部分阴极废气输出输出到阴极室。

公开(公告)号：US20160043417A1

公开(公告)日：2016-02-11

申请号：US14886928

申请日：2015-10-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： THOMAS W. TIGHE ,  STEVEN G. GOEBEL ,  GARY M. ROBB ,  ABDULLAH B. ALP ,  BALASUBRAMANIAN LAKSHMANAN ,  JOSEPH N. LOVRIA

IPC: H01M8/04

CPC classification number: H01M8/04231 ,  H01M8/04089 ,  H01M8/04126 ,  H01M8/04223 ,  H01M8/04302 ,  H01M8/04303 ,  H01M8/04395 ,  H01M8/04455 ,  H01M8/04559 ,  H01M8/04701 ,  H01M8/04746 ,  H01M8/04753 ,  H01M8/04798 ,  H01M8/04955 ,  H01M2250/20 ,  Y02T90/32

Abstract: A method for creating an oxygen depleted gas in a fuel cell system, including operating a fuel cell stack at a desired cathode stoichiometry at fuel cell system shutdown to displace a cathode exhaust gas with an oxygen depleted gas. The method further includes closing a cathode flow valve and turning off a compressor to stop the flow of cathode air.

Abstract translation: 一种用于在燃料电池系统中产生贫氧气体的方法，包括在燃料电池系统关闭时以期望的阴极化学计量运行燃料电池堆，以用贫氧气体置换阴极废气。 该方法还包括关闭阴极流量阀并关闭压缩机以阻止阴极空气的流动。

公开(公告)号：US20150325872A1

公开(公告)日：2015-11-12

申请号：US14275731

申请日：2014-05-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SWAMINATHA P. KUMARAGURU ,  JEFFREY A. ROCK ,  BALASUBRAMANIAN LAKSHMANAN

IPC: H01M8/04

CPC classification number: H01M8/04097 ,  H01M8/04201 ,  H01M8/04223 ,  H01M8/04225 ,  H01M8/04228 ,  H01M8/04238 ,  H01M8/04302 ,  H01M8/04303 ,  H01M8/04753 ,  H01M8/04761 ,  H01M8/0662 ,  H01M2250/20

Abstract: System and methods for reducing carbon corrosion in a fuel cell system are presented. Particularly, the disclosed systems and methods may be utilized in connection with preventing the formation of a propagating H2-Air interface within the fuel cell system. In certain embodiments, the disclosed systems and methods may utilize an electrochemical pump disposed in a cathode loop of the fuel cell system configured to remove oxygen that intrudes into the fuel cell system. In further embodiments, pumps may be included in an anode and a cathode loop of the fuel cell system that may allow for circulation of certain gases to prevent the formation of an H2-Air front with the system.

Abstract translation: 介绍了一种减少燃料电池系统中碳腐蚀的系统和方法。 特别地，所公开的系统和方法可以用于防止在燃料电池系统内形成传播的H2-Air界面。 在某些实施例中，所公开的系统和方法可以利用设置在燃料电池系统的阴极环中的电化学泵，其被配置为去除侵入到燃料电池系统中的氧气。 在另外的实施例中，泵可以包括在燃料电池系统的阳极和阴极环中，其可以允许某些气体的循环，以防止与系统形成H 2空气前端。