公开(公告)号：US12092215B2

公开(公告)日：2024-09-17

申请号：US18076791

申请日：2022-12-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Miller ,  Bhaskara K Ch ,  Margarita M. Mann ,  Edward J Billings ,  Krishna Garapati

IPC: F16J15/08

CPC classification number: F16J15/0818

Abstract: A press-in-place reinforced seal for an interface between adjacent components, includes a cylindrical structure arranged along a longitudinal axis and characterized by a stepped-shape in a cross-sectional view. The seal is pressed into a first component and compressed by a second component when the seal is installed within the interface. The stepped-shape includes a compliant first section having a first width along the longitudinal axis and a first length orthogonal to the longitudinal axis. The first section is compressed by the second component and generates sealing pressure between the first and second components when the seal is installed. The stepped-shape also includes a rigid second section affixed to the first section along the first length for stabilizing the seal structure. The second section has a second width along the longitudinal axis and a second length orthogonal to the longitudinal axis and greater than the first length.

公开(公告)号：US20250140877A1

公开(公告)日：2025-05-01

申请号：US18499389

申请日：2023-11-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Abhishek Kumar Sahu ,  Ronald Miller ,  Brian Miller ,  Bhaskara K. Ch ,  Neeraj Mishra

IPC: H01M8/0273 ,  B60L50/51 ,  B60L50/72 ,  H01M8/0202 ,  H01M8/248 ,  H02P27/06

Abstract: A fuel cell system, e.g., of a motor vehicle, includes a fuel cell stack having fuel cells and non-repeating hardware components, the latter including wet and dry end units. The cells are positioned between the end units. The dry end unit includes an end plate and a compression plate assembly that uniformly compresses the cells against the end plate, and a terminal plate surrounded by a seal plate. An insulator frame disposed adjacent to the compression plate assembly is engaged with the insulator frame via a frictional interface provided by o-ring compression seals having a respective post connected to the terminal plate and the seal plate, and a pocket connected to the insulator frame. The post and pocket of at least one of the compression seals together define a fluid passage. One or more shim plates may be disposed between the end plate and insulator frame.

公开(公告)号：US20240379985A1

公开(公告)日：2024-11-14

申请号：US18314415

申请日：2023-05-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Miller ,  Bhaskara K. Ch ,  Brian Miller ,  Abhishek Kumar Sahu

IPC: H01M8/248 ,  H01M8/2483 ,  H01M8/2485

Abstract: A fuel cell system includes a dry end unit, a wet end unit comprising a terminal-compression plate, an insulator plate, and a base plate, and a plurality of fuel cells disposed between the dry end unit and the wet end unit. Each of the plurality of fuel cells includes a perimeter area that surrounds the plurality of fuel cells. The terminal-compression plate functions as a compression plate and a terminal plate, and where the base plate is used to uniformly compress the plurality of fuel cells through the insulator plate and the terminal-compression plate.

公开(公告)号：US20240264005A1

公开(公告)日：2024-08-08

申请号：US18164094

申请日：2023-02-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Miller ,  Bhaskara K Ch ,  Abhishek Kumar Sahu ,  Zhun Liu

IPC: G01K1/12 ,  G01K1/16

CPC classification number: G01K1/12 ,  G01K1/16

Abstract: A two-way thermo-mechanical shield assembly for a sensor of a heat-producing apparatus having an apparatus housing includes a first shield and a second shield. Each shield is configured to be mounted to the apparatus housing and are together configured to encase the sensor. The first shield is configured to protect the sensor from thermal energy originating internal to the apparatus housing, while the second shield is configured to protect the sensor from physical impact and thermal energy originating external to the apparatus housing.

公开(公告)号：US20250023066A1

公开(公告)日：2025-01-16

申请号：US18352389

申请日：2023-07-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Miller ,  Prafulla Bodke ,  Anna S. Bansode ,  Chandan AS

IPC: H01M8/04029 ,  F28D7/08 ,  F28F3/02 ,  F28F23/00 ,  H01M8/0267

Abstract: A heat exchanger may include a coolant cavity having a coolant flow path configured for fluidly communicating coolant and a hydrogen cavity having a hydrogen flow path configured for fluidly communicating hydrogen. The hydrogen cavity may include a plurality of fins dispersed in-line throughout. The heat exchanger may further include a housing configured for thermally coupling the coolant cavity with the hydrogen cavity, optionally with the thermal coupling providing conductive heat transfer between the coolant and the hydrogen based at least in part on a portion of the heat transfer occurring through the fins.

公开(公告)号：US20240266562A1

公开(公告)日：2024-08-08

申请号：US18166070

申请日：2023-02-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Erin Farbar ,  Devesh Pande ,  Timothy J. Howitt ,  Dean Kostadinovski ,  Ronald Miller

IPC: H01M8/04119 ,  H01M8/04746 ,  H01M8/04858

CPC classification number: H01M8/04119 ,  H01M8/04753 ,  H01M8/0494

Abstract: A fuel cell system arranged to supply electric power to an actuator via an electric power circuit includes an anode and a cathode. A hydrogen delivery system is arranged to supply pressurized hydrogen to the anode, and has a jet pump including an injector nozzle and an ejector. The jet pump channels pressurized hydrogen from a hydrogen tank to the fuel cell. The ejector includes a venturi tube, a mixing chamber, and a secondary flow element, wherein the secondary flow element includes a first duct and a bypass duct. The venturi tube has a first fluidic inlet that is proximal to the injector nozzle, and a second fluidic inlet that is downstream from the injector nozzle of the venturi tube. The first duct is fluidly coupled to the first fluidic inlet, and the bypass duct is fluidly coupled to the second fluidic inlet of the venturi tube.

公开(公告)号：US20240191797A1

公开(公告)日：2024-06-13

申请号：US18076791

申请日：2022-12-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Miller ,  Bhaskara K Ch ,  Margarita M. Mann ,  Edward J Billings ,  Krishna Garapati

IPC: F16J15/08

CPC classification number: F16J15/0818

Abstract: A press-in-place reinforced seal for an interface between adjacent components, includes a cylindrical structure arranged along a longitudinal axis and characterized by a stepped-shape in a cross-sectional view. The seal is pressed into a first component and compressed by a second component when the seal is installed within the interface. The stepped-shape includes a compliant first section having a first width along the longitudinal axis and a first length orthogonal to the longitudinal axis. The first section is compressed by the second component and generates sealing pressure between the first and second components when the seal is installed. The stepped-shape also includes a rigid second section affixed to the first section along the first length for stabilizing the seal structure. The second section has a second width along the longitudinal axis and a second length orthogonal to the longitudinal axis and greater than the first length.

公开(公告)号：US20230400141A1

公开(公告)日：2023-12-14

申请号：US17835250

申请日：2022-06-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Abhishek Kumar Sahu ,  Saurabh Kumar Verma ,  Ronald Miller

IPC: F16L59/18 ,  F16L23/024 ,  F16L23/00 ,  H01M8/04111 ,  H01M8/04082

CPC classification number: F16L59/184 ,  F16L23/024 ,  F16L23/003 ,  H01M8/04111 ,  H01M8/04201

Abstract: A thermo-structural spacer is provided. The spacer includes a cylindrical center portion, a first flange connected to a first end of the cylindrical center portion, a second flange connected to a second end of the cylindrical center portion. The second end is distal from the first end. The spacer further includes an annular inner wall configured for providing a through hole extending through a longitudinal axis of the thermo-structural spacer. The cylindrical center portion is narrower than the first flange. The cylindrical center portion is narrower than the second flange. The thermo-structural spacer is configured for restricting heat transfer between the first flange and the second flange.

公开(公告)号：US20240200655A1

公开(公告)日：2024-06-20

申请号：US18081103

申请日：2022-12-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Miller ,  Abhishek Kumar Sahu ,  Purushothama Siddappaji ,  Chethan Raj HM

IPC: F16J15/08

CPC classification number: F16J15/0818

Abstract: A press-in-place seal for an interface between adjacent components, with the seal including a cylindrical structure arranged along a longitudinal axis and characterized by a J-shape in a cross-sectional view. The seal is arranged inside a first component and compressed by a second component when the PIP seal is installed within the interface. The J-shape includes a first stem section orthogonal to and extending toward the longitudinal axis for being compressed by the second component when the seal is installed within the interface. The J-shape also includes a second stem section longer than the first stem section, orthogonal to and extending toward the longitudinal axis, for stabilizing the structure when the seal is installed. The J-shape further includes a base third section arranged parallel to the longitudinal axis and connecting the first stem section to the second stem section, thereby defining a concavity between the first and second sections.