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US 6,147,472 AGranted
Non-rechargeable battery pack
AssigneeThe Gillette Company
InventorsJeffrey Hewes, Robert Yoppolo, Matthew P. Hull
Life of this patent
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Abstract
A battery pack is described. The battery pack includes a DC to DC converter and a group of at least two primary cells. The battery pack also has an anti-charge circuit that inhibits charging current from charging the group of primary cells.
Claims13
A battery pack, comprises:
- a DC to DC converter;
- a group of at least two primary cells coupled to the DC to DC converter;
- and
- a charge inhibiting circuit that decouples the primary cells from DC to DC converter when a charging current is fed to the battery pack to prevent the charging current from charging the group of at least two primary cells.
1 more element
A battery pack, comprises:
- a DC to DC converter;
- a charge inhibiting circuit;
- and
- a group of at least two primary cells, with the DC to DC converter operatively coupled to the group of primary cells through the charge inhibiting circuit;
- wherein the charge inhibiting circuit decouples the primary cells from DC to DC converter when an external charging current is fed to the battery pack to prevent the charging current from charging the primary cells and with the group of primary cells having an initial voltage that is higher than a rated voltage for the battery pack.
2 more elements
Dependencies are inferred from the claim text.