Rovcal, Inc.

Rayovac Corporation

Spectrum Brands, Inc. ( Fka Rayovac Corporation)

Paul Cheeseman

Viet H Vu

William C Bushong

Ernest Ndzebet

Karthik Ramaswami

Erik Mortensen

Gregory James Davidson

Mario Destephen

Zhihong Jin

David Boone

Jon Luecke

Michael J Root

Marc Syvertsen

Sergey Sazhin

Christopher Pedicini

John D Witzigreuter

Deborah Gilbert

Aaron J Rositch

Thomas M Kaufman

Juergen Scherer

John A Thompson

Zihong Jin

Sergiy V Sazhin

Greg Davidson

Sergy Sazhin

Jin Zihong

The present invention relates to a high capacity electrochemical cell having a cathode containing an oxide of copper as an active material, as well as an anode, an electrolyte, and separators for use with the cathodes of the invention in an alkaline electrochemical cell.

Separators for alkaline electrochemical cells

A rechargeable electrochemical cell charger is provided for charging electrochemical cells at high current rates. The charger provides a sufficient force between the charge contacts and the cell terminals to remove nonconductive contaminants when the cell is inserted into the charger, thereby increasing the conductivity at the point of contact. The charger can include an air moving system for the dissipation of heat from the electrochemical cell during charging, and a heat sensor to determine the cell temperature during charging.

Method and apparatus for charging electrochemical cells

The present invention relates to a high capacity electrochemical cell including an anode, a cathode, and a separator disposed between the anode and cathode. The anode is configured to operate in combination with a quantity of an oxide of copper in the cathode. The cell is capable of operating at a discharge voltage greater than 1.05 volts for at least an initial 5% of a cell discharge period at a current density of at least 5 mA/g, and can include a cathode active material that includes an oxide of copper.

Alkaline cells having high capacity

Aspects of the present invention provide a high capacity electrochemical cell having an anode, a cathode, and a separator disposed between the anode and cathode. The cathode includes a mixture having a first component, a second component and a third component. The first component includes a first element, the second component includes a second element, and the third component includes the first element and the second element. The mixture can, for instance, be a mixed metal oxide. The separator is configured to provide suitable ionic transport between the anode and the cathode.

A rechargeable electrochemical cell is provided having a pressure-responsive apparatus for determining a charge termination point. In particular, a reversible pressure-responsive switch may be disposed in a cap at the open end of a rechargeable metal hydride cell. The reversible pressure-responsive switch may also contain a vent system for releasing the cell internal pressure. Alternatively, a rechargeable cell may include a strain gauge disposed in its outer surface whose resistance changes as the outer surface of the battery expands due to internal pressure accumulation during charging. Additionally, a rechargeable cell is used combination with a charging source that can supply constant voltage, constant current, alternating current, or voltage that varies between a minimum threshold and a maximum threshold.

Method and apparatus for regulating charging of electrochemical cells

An air manager is provided for supplying air to a battery that may be disposed in a battery compartment of an electrical device. The battery includes at least one air-depolarized cell to supply power to the device. The air manager achieves a dual function of stimulating flow within the battery compartment as well as delivering air over the at least one cell. In particular, the air entering the air manager is split into two streams, the first stream delivering air to the cell, and the second stream stimulating flow within the battery compartment. The air manager may use a fan, peristaltic air pump, or any alternative air mover. The battery may have a &ldquo;Figure-8&rdquo; design to provide adjacent cell compartments that are received in a battery compartment configured to receive standard size alkaline cells.

Air manager for metal-air cells

Growing community of inventors

Verona, WI, United States of America

Paul Cheeseman