Abstract: A cell voltage monitoring (CVM) pick-up assembly for a fuel cell stack includes a tab and a contact wire having two ends. A loop is located between the two ends to mount the wire on the tab to resiliently urge one end towards a fuel cell to provide electrical contact with it. Also disclosed is a fuel cell stack that includes a plurality of assemblies.

Abstract: Disclosed herein is a method for producing fluid flow field plates. The method includes cutting through an electrically conductive sheet to create at least one opening for a fluid in the sheet; and embossing the sheet to create therein at least one support for the at least one opening for a fluid.

Abstract: Disclosed herein is a circuit for passively managing power between a fuel cell stack and a battery in a hybrid system. The circuit includes a buck-boost converter circuit, a direct charge circuit; and a network which interconnects them. The network is configured so that in response to a voltage level in the network being lower than or equal to a maximum battery charge voltage, the battery is charged via the direct charge circuit; and in response to another voltage level in the network which is higher than the maximum battery charge voltage, the battery is charged via the buck-boost converter circuit. Also disclosed is a device incorporating the circuit and a method of passively managing power.

Abstract: Disclosed herein is a method for producing bipolar plates. The method comprises providing an electrically conductive sheet and then cutting through the sheet to create at least one opening for a fluid in the sheet.

Abstract: Disclosed herein is a method of producing bipolar plates. In one embodiment, is method for producing bipolar plates, the method comprising (a) providing an electrically conductive sheet; and (b) cutting through the sheet to create therein at least one opening for a fluid, where the cut sheet includes a plurality of elongate parallel oxidant flow openings and where at least one oxidant inlet manifold opening and at least one oxidant outlet manifold opening are located at the ends of the elongate oxidant flow openings and in communication therewith.

Abstract: Disclosed herein is a circuit for passively managing power between a fuel cell stack and a battery in a hybrid system. The circuit includes a buck-boost converter circuit, a direct charge circuit; and a network which interconnects them. The network is configured so that in response to a voltage level in the network being lower than or equal to a maximum battery charge voltage, the battery is charged via the direct charge circuit; and in response to another voltage level in the network which is higher than the maximum battery charge voltage, the battery is charged via the buck-boost converter circuit. Also disclosed is a device incorporating the circuit and a method of passively managing power.

Abstract: Disclosed herein is a cell voltage monitoring (CVM) pick-up assembly for a fuel cell stack. The assembly includes a tab and a contact wire having two ends. A loop is located between the two ends to mount the wire on the tab to resiliently urge one end towards a fuel cell to provide electrical contact with it. Also disclosed is a fuel cell stack that includes a plurality of assemblies.

Abstract: Disclosed herein is a fuel cell having a catalyst coated membrane (CCM) including a membrane sandwiched between an anode layer and a cathode layer; two gas diffusion layers located against respective anode and cathode layers; and two separator plates located against the respective gas diffusion layers. The fuel cell has at least one hydrogen passageway for hydrogen fuel, which extends through the CCM and disposed orthogonal relative to the plane of the layers. The hydrogen fuel is blocked from contacting the cathode layer so that the hydrogen fuel is provided to one side of the anode layer. At least one air/oxygen passageway for air/oxygen fuel extends through the CCM and disposed orthogonal relative to the plane of the layers. The air/oxygen fuel is blocked from contacting the anode layer so that the air/oxygen fuel is provided to one side of the cathode layer. A coolant pathway is in fluid communication with the layers and located to remove heat away from the layers during operation of the fuel cell.