Back to results
US 2011/0086252 A1Published application
Cylindrical nickel-zinc cell with positive can
AssigneePowerGenix Systems, Inc.
InventorJeffrey Phillips
Life of this patent
Estimating the term…
Abstract
Rechargeable nickel zinc cells, and methods of manufacture, of a configuration that utilizes a positive can with a vent cap at the positive pole of the battery are described.
Claims23
A rechargeable nickel zinc cell, comprising,
- i) a jellyroll electrode assembly comprising a nickel positive electrode, a zinc negative electrode, and at least one separator layer disposed between the nickel positive electrode and the zinc negative electrode;
- ii) a can in electrical communication with the nickel positive electrode, the can comprising an aperture at the base of the can;
- iii) a vent cap affixed to the base of the can and in electrical communication with the can, the vent cap configured to vent gas from the rechargeable nickel zinc cell via the aperture;
- and
- iv) a negative collector disc in electrical communication with the zinc negative electrode and electrically isolated from the can, the negative collector disc configured as a closure to the open end of the can.
2 more elements
A method of making a rechargeable nickel zinc cell, the method comprising:
- i) sealing a jellyroll assembly, comprising a nickel positive electrode, a zinc negative electrode, and at least one separator layer disposed between said nickel positive electrode and zinc negative electrode, in a can configured so that the nickel positive electrode is in electrical communication with the base and the body of the can and the zinc negative electrode is in electrical communication with a negative current collecting disc at the other end of the can and electrically isolated from the can;
- the negative current collecting disc configured as a closure to the open end of the can;
- and
- ii) affixing a vent cap at the base of the can, in electrical communication with the nickel positive electrode;
- the vent cap configured to vent gas from the rechargeable nickel zinc cell via an aperture in the base of the can.
2 more elements
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.