Carl R Halbach

47676841, Aug 30, 1988

Aug 19, 1987

7/087265

Carl R. Halbach - Costa Mesa CA

Ford Motor Company - Dearborn MI

H01M 1039

429103

This invention relates to a method for improving the chargeability of sodium-sulfur cells by including in the cathodic reaction of the cell a device which provides a continuous release of additive into the sodium polysulfide/sulfur cathodic reactant. This method also reduces the corrosion of corrodible metal current collectors which may be employed in contact with the cathodic reactant therein.

56520735, Jul 29, 1997

Apr 3, 1996

8/626992

Stephen John Lenhart - Mountain View CA
Carl R. Halbach - Palo Alto CA
John C. Hall - Saratoga CA

Space Systems/Loral, Inc. - Palo Alto CA

H01M 646

429210

A bipolar rechargeable battery comprises a vessel with an insulated liner and an interior region for bulk storage of a gas which serves as an electrode active material. A plurality of cells are nested within the vessel, each including a metallic bipolar cup having a circular base and an integral insulated hydrophobic upstanding side wall of truncated conical shape diverging with increased distance from the base. A positive electrode overlies the base. A dielectric separator separates the positive electrode and a negative electrode sized to fittingly engage the side wall such that any gas generated at the positive electrode must pass through the negative electrode to escape the cell to thereby recombine the generated gas with the active material gas within the cell. The upstanding side wall of each cell is oriented to enable gas passage from each of said cells to the bulk gas storage region. The upstanding side walls of the adjacent cells mutually define a gap enabling gas communication between the adjacent cells and between each of the cells and the bulk gas storage region.