Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and...
Reexamination Certificate
2011-02-01
2011-02-01
Yuan, Dah-Wei D (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
C429S133000, C429S163000, C429S164000
Reexamination Certificate
active
07879484
ABSTRACT:
A cylindrical lithium ion secondary battery includes an electrode assembly; a center pin positioned within the electrode assembly and having upper and lower ends that are closed; a can containing the electrode assembly and the center pin; and a cap assembly coupled to the top of the can. The center pin can include a body extending a predetermined length with its upper and lower end open and at least one closure member adapted to close the upper and lower ends of the body and to melt or fracture at a predetermined temperature. The center pin body may also or altematively include a circuit member positioned inside the center pin and adapted to be short-circuited in the case of overcharging and to consume current.
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Chang Seok Gyun
Chang Youn Han
Hyung Yoo Eup
Woo Soon Ki
Arciero Adam A
Christie Parker & Hale LLP
Samsung SDI & Co., Ltd.
Yuan Dah-Wei D
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