Electrochemical cell with electrode filled protrusion
AssigneeEnergizer Brands, LLC
InventorJohnson Mark
Life of this patent
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Abstract
An electrochemical cell comprises a can comprising a cylindrical side wall extending from a closed end wall. The closed end wall comprises a protrusion. The protrusion has a protrusion cavity therein. A pre-formed pellet of a first electrode material is disposed in the protrusion cavity. The electrochemical cell may further comprise a separator defining an inner cavity and separating the inner cavity from an outer cavity. The outer cavity is defined by the can and the separator. The electrochemical cell may further comprise a first electrode material disposed in the outer cavity; and a second electrode material disposed in the inner cavity.
Claims20
An electrochemical cell comprising:
- a can comprising a cylindrical side wall extending from a first end of the can to a second end of the can, the second end of the can having a contact cover welded thereto, the contact cover enclosing an opening of the second end of the can to form a closed end wall, the contact cover comprising a protrusion with a protrusion cavity therein;
- and
- a pre-formed pellet of a first electrode material disposed in the protrusion cavity, wherein the pre-formed pellet is sized and shaped to contour to the protrusion cavity.
A method for manufacturing an electrochemical cell, the method comprising:
- providing a can comprising a cylindrical side wall extending from a first end of the can to a second end of the can, the second end of the can having a contact cover welded thereto, the contact cover enclosing an opening of the second send of the can to form a closed end wall, the contact cover comprising a protrusion with a protrusion cavity therein;
- inserting a pre-formed pellet of a first electrode material into the protrusion cavity, wherein the pre-formed pellet is sized and shaped to contour to the protrusion cavity;
- and
- sealing a first end of the can opposite the closed end wall.
A method for manufacturing a electrochemical cell, the method comprising:
- providing a can comprising a cylindrical side wall extending from a first end of the can to a second end of the can, the second end of the can having a contact cover welded thereto, the contact cover enclosing an opening of the second send of the can to form a closed end wall, the contact cover comprising a protrusion with a protrusion cavity therein;
- inserting a pre-formed pellet comprising cathode material into the can so as to at least partially fill the protrusion cavity, wherein the pre-formed pellet is sized and shaped to contour to the protrusion cavity;
- and
- sealing a first end of the can opposite the closed end wall.
Dependencies are inferred from the claim text.