Abstract:
An electrochemical battery (10) made of stacked cells (12) which are separated by separator plates (24) comprising good heat conductive material, e.g., nickel, stainless steel or copper. The separator plates extend beyond the edge of the stacked cells and outside the enclosure of the battery. The separator plates directly conduct heat, which is generated by the electrochemical process, from the battery cells to the ambient environment. Sealing of the enclosure between the separator plates is provided by an O-ring (78) or, alternatively, by a bellows (70) sealed to adjacent separator plates by O-rings. Sealing is possible for hydrogen at low pressure which is present in batteries utilizing a metal-hydride hydrogen storage capacity.
Abstract:
A metal hydride battery includes a metal hydride vessel for storing hydrogen and a battery cell (12) in another enclosure having the capability of fluid communication between the vessel and enclosure through in-line piping (20). The in-line piping (20) includes a catalytic converter (24) and a molecular sieve dryer (30) for adsorbing water from the hydrogen being piped from the battery cell (12) enclosure to the hydrogen storage metal hydride vessel.
Abstract:
A system and method is provided whereby exhaust gases from a cold started internal combustion engine (41) are rapidly brought to catalytic combustion conditions. Specifically, a closed system of a low pressure metal hydride heat exhanger (44) and a high pressure metal hydride heat exchanger (48) is provided which, upon engine ignition, effectuates hydrogen flow from the high pressure alloy exchanger (48) with rapid heating of the low pressure alloy in the low pressure metal hydride heat exchanger (44) due to hydrogen occlusion, and with the further provision that the heated low pressure hydride alloy exchanger (44) is in heat exchange relationship with the cold started engine exhaust gases or the vehicle catalytic converter (23) and provides heat necessary for initiation of catalytic combustion of pollutants in the exhaust gases.