Chemistry: electrical current producing apparatus – product – and – Having means to accommodate electrode expansion
Reexamination Certificate
2005-09-23
2009-11-17
Kalafut, Stephen J. (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Having means to accommodate electrode expansion
C429S094000, C429S130000, C029S623100
Reexamination Certificate
active
07618737
ABSTRACT:
Lithium secondary batteries having deformation prevention straps for preventing the electrode assemblies of the lithium secondary batteries from deforming and methods for manufacturing the same are disclosed. A lithium secondary battery comprises an electrode assembly comprising a first electrode plate having a first electrode tab attached thereto, a second electrode plate having a second electrode tab attached thereto, and a separator between the first and second electrode plates. The electrode assembly is formed by winding the first and second electrode plates and the separator. A deformation prevention strap is attached to at least a portion of the electrode assembly and is wound in a direction substantially perpendicular to the direction in which the electrode assembly is wound. The electrode assembly, including the deformation prevention strap, is enclosed within a battery case. A cap assembly seals the case and comprises an electrode terminal electrically connected to the electrode assembly.
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Christie Parker & Hale LLP
Kalafut Stephen J.
Samsung SDI & Co., Ltd.
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