Patent application number | Description | Published |
20140051007 | BIPOLAR PLATES FOR USE IN ELECTROCHEMICAL CELLS - The present disclosure is directed towards the design of electrochemical cells for use in high pressure or high differential pressure operations. The electrochemical cells of the present disclosure have non-circular external pressure boundaries, i.e., the cells have non-circular profiles. In such cells, the internal fluid pressure during operation is balanced by the axial tensile forces developed in the bipolar plates, which prevent the external pressure boundaries of the cells from flexing or deforming. That is, the bipolar plates are configured to function as tension members during operation of the cells. To function as an effective tension member, the thickness of a particular bipolar plate is determined based on the yield strength of the material selected for fabricating the bipolar plate, the internal fluid pressure in the flow structure adjacent to the bipolar plate, and the thickness of the adjacent flow structure. | 02-20-2014 |
20140238845 | ELECTROCHEMICAL CELL HAVING A CASCADE SEAL CONFIGURATION AND HYDROGEN RECLAMATION - An electrochemical cell includes a pair of bipolar plates and a membrane electrode assembly between the bipolar plates. The electrochemical cell further includes a first seal defining a high pressure zone, wherein the first seal is located between the bipolar plates and configured to contain a first fluid within the high pressure zone. Further, the electrochemical cell includes a second seal defining an intermediate pressure zone, wherein the second seal is located between the bipolar plates and configured to contain a second fluid within the intermediate pressure zone. The first seal is configured to leak the first fluid into the intermediate pressure zone when the first seal unseats. | 08-28-2014 |
20150030957 | SEAL CONFIGURATION FOR ELECTROCHEMICAL CELL - An electrochemical cell includes a pair of bipolar plates and a membrane electrode assembly between the bipolar plates. The membrane electrode assembly comprises an anode compartment, a cathode compartment, and a proton exchange membrane disposed therebetween. The cell further includes a sealing surface formed in one of the pair of bipolar plates and a gasket located between the sealing surface and the proton exchange membrane. The gasket is configured to plastically deform to create a seal about one of the cathode compartment or the anode compartment. The sealing surface can include one or more protrusions. | 01-29-2015 |
20160002795 | MULTI-STACK ELECTROCHEMICAL COMPRESSOR SYSTEM AND METHOD FOR OPERATING - A multi-stack electrochemical hydrogen compressor (EHC) system is provided. The EHC system may have two or more EHC stacks, wherein each EHC stack includes at least one electrochemical cell and a power supply. The EHC system may also have a controller in communication with the power supply of each EHC stack, wherein the controller is configured to reduce total energy consumption of the EHC system by independently controlling the power supply of each EHC stack. | 01-07-2016 |
20160060775 | SEAL DESIGNS FOR MULTICOMPONENT BIPOLAR PLATES OF AN ELECTROCHEMICAL CELL - A method of sealing a multi-component bipolar plate is disclosed. The method may include inserting a first seal between a first component and a second component, wherein the first seal is aligned with a first plurality of protrusions formed on a surface of at least one of the first component and the second component. The method may also include compressing the first component and the second component to cause the penetration of the first plurality of protrusions into the first seal. The method may further include plastically deforming the first seal in order to create a first sealing surface between the first component and the second component. | 03-03-2016 |