US 11,024,869 B2
BUTTON CELLS AND METHOD OF PRODUCING SAMEGeneral
US 11,024,869 B2
BUTTON CELLS AND METHOD OF PRODUCING SAME
Tech Center:
1700 Chemical and Materials Engineering
Examiner:
Cynthia H Kelly
Art Unit:
1722 Fuel Cells, Batteries, Solar Cells, Liquid Crystal Composition
Inventors:
Eduard Pytlik; Jürgen Lindner; Ulrich Barenthin; Winfried Gaugler
Assignee:
Priority:
02/09/10
Filed:
02/21/20
Granted:
06/01/21
Expiration:
02/09/30
Abstract
A button cell includes a housing, the housing including a cell cup, the cell cup having a flat bottom area, a cell cup casing; an insulator; and an electrode-separator assembly winding disposed within the housing, the electrode-separator assembly winding including a multi-layer assembly that is wound in a spiral shape about an axis, the multi-layer assembly including a positive electrode formed from a first metallic film or mesh coated with a first electrode material, a negative electrode formed from a second metallic film or mesh coated with a second electrode material, and a separator disposed between the positive electrode and the negative electrode. The first metallic film or mesh is bent such that at least a portion extends out of the electrode-separator assembly winding and wherein at least a first part of the portion is not covered with the first electrode material.
Cooperative Patent Classification (CPC)
Y02Y02P70/50Y02E60/10Y02PH01M10/0427H01MY10T29/49108Y10T