Intelligent Energy Inc.

Other

Nathan Grange

Paul Alan Benson

Peter David Hood

Paul Leonard Adcock

Jonathan Cole

Simon Edward Foster

Ashley James Kells

Scott Baird

Jeremy Stephen Matcham

Zachary Elliott

Raymond Pinchin

Damian Davies

A fuel cell assembly in combination with an electrochemical battery, having an electrical connection therebetween, the electrical connection including a current blocking element to prevent current stored in the battery from flowing into the fuel cell assembly and wherein the electrical connection is absent of a current control component for current generated by the fuel cell assembly flowing to the battery.

Fuel cell and battery

A fuel cell stack assembly () comprises a fuel cell stack (); an air flow plenum chamber () disposed on a face () of the stack () for delivering air to or receiving air from flow channels in the fuel cell stack (), at least a part of the plenum chamber wall being defined by a printed circuit board, the printed circuit board having at least one aperture () therein; and a fan () mounted to the board adjacent the aperture () and configured to force air through the aperture into or out of the plenum chamber. The assembly provides integration of circuit boards essential or supportive to operation of the fuel cell assembly with the air flow plenum for forced ventilation of the fuel cells in the stack.

Fan and PCB mounting in fuel cell stack assemblies

An electrochemical fuel cell having an anode, an ion transfer membrane and a cathode has liquid water delivered to the fluid flow channels within the cathode so as to maintain a relative humidity of 100% throughout the fluid flow channels. A calibration method and apparatus is described for determining an optimum quantity or range of quantities of liquid water to be delivered to the cathode fluid flow channels under varying operating conditions. An operating method and apparatus is described that ensures an optimum quantity of liquid water is delivered to the cathode fluid flow channels under varying operating conditions.

Water management in fuel cells

One or more operating parameters, such as electrical current flow from and air flow to, a fuel cell stack within a fuel cell assembly is periodically modulated during rehydration intervals to intermittently increase hydration levels of the fuel cell stack independently of the electrical current demand on the fuel cell assembly from an external load, while maintaining electrical current delivery to that external load.

Rehydration of fuel cells

Growing community of inventors

Kegworth, United Kingdom

Nathan Grange