Li-ion and/or Li-ion polymer battery with shielded leads
AssigneesNgk Spark Plug Co., Ltd., NTK Powerdex, Inc.
InventorsXuekun Xing, Jeffrey M. Smith
Life of this patent
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Abstract
A battery section for a Li-ion and/or Li-ion polymer cell, comprised of: a planar metal mesh layer having a body portion and a coplanar tab portion defining a battery lead extending from one edge of the mesh layer; electrode film laminated to opposite surfaces of the body portion of the metal mesh layer; and a protective layer on at least one side of the tab, the protective layer having a portion of the tab that is adjacent to the electrode film, the protective layer comprised of an outer polymer layer and an inner adhesive layer adhering the outer polymer layer to the portion of the tab.
Claims7
A method of forming a shielded lead for a Li-ion and/or Li-ion polymer battery, comprising the steps of:
- a) forming a battery laminate by applying electrode films onto each side of a collector sheet of collector material, wherein said collector sheet is disposed between said electrode films with a portion of said collector sheet extending from edges of said electrode films;
- b) applying a strip of a protective laminate onto each side of said extending portions of said collector sheet, said strip being disposed along an edge of said electrode film where said collector sheet extends from said electrode film, said protective laminate comprised of an outer layer of a polymer film and an inner layer of an adhesive material for adhering said electrode film to said collector sheet;
- and
- c) stamping a current collector tab from said extending portion of said collector sheet, wherein said tab has an intermediate portion adjacent said electrode films having layers of said protective laminate on each side thereof and an end portion comprised of an exposed collector sheet.
Dependencies are inferred from the claim text.