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Billerica, MA, United States

Patent
Nuvera Fuel Cells Inc. | Date: 2014-03-05

In accordance with one embodiment, an electrochemical cell stack compression system may include an integral, hollow frame configured to contain a plurality of electrochemical cells arranged along an axis in a stack configuration. The frame may have a defined shape and may form a continuous border around a periphery of the electrochemical cell stack when inserted. The frame may be formed of a plurality of fibers.


Patent
Nuvera Fuel Cells Inc. | Date: 2015-03-19

The cathode recirculation system for a fuel cell module may include an inert gas inlet passage configured to receive inert gas and an oxygen gas inlet passage configured to receive oxygen, a blending component in fluid communication with the inert gas inlet passage, the oxygen gas inlet passage, and an inlet of at least one cathode, and a recirculation line in fluid communication with an outlet of the at least one cathode and the blending component configured to recirculate a mixed gas stream containing oxygen and an inert gas. At least a portion of the mixed gas released from the at least one cathode may be recirculated back to the blending component where oxygen, inert gas, or both oxygen and inert gas are introduced into the recirculated mixed gas stream and then supplied to the inlet of the at least one cathode.


A system for compressing and drying hydrogen is provided. The system may have a humidifier configured to receive and humidify a concentrated hydrogen stream and produce a first humidified hydrogen stream. The system may also have a compressor configured to receive and compress the first humidified hydrogen stream, and produce a pressurized humidified hydrogen stream. The system may further have a dryer including a first bed configured to in production mode receive the pressurized humidified hydrogen stream, absorb at least a portion of the humidity, and produce a product hydrogen stream. The first bed may further be configured to in regeneration mode receive a portion of the concentrated hydrogen stream to regenerate the first bed, and produce a second humidified hydrogen stream.


In accordance with one embodiment, a method of drying a hydrogen gas mixture is disclosed. The method may include determining a mass flow rate of water {dot over (m)}


Patent
Nuvera Fuel Cells Inc. | Date: 2015-05-13

A flow field for use in an electrochemical cell is disclosed. The flow field includes a porous metallic structure including an inlet port and an outlet port. The flow field further includes a plurality of first channels formed in the structure. Each of the plurality of first channels extends from a first proximal end in fluid communication with the inlet port and terminates at a first distal end within the structure. The flow field also includes a plurality of second channels formed in the structure. Each of the plurality of second channels extends from a second distal end in fluid communication with an outlet port and terminates at a second proximal end within the structure.

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