Secondary battery
AssigneeSamsung SDI Co., Ltd.
InventorsChohee Kang, Junsun Yong
Life of this patent
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Abstract
Disclosed is a secondary battery that comprises an electrode assembly, a can accommodating the electrode assembly, and a cap assembly coupled to an upper portion of the can and including an upper cap that transfers a current of the electrode assembly to an exterior of the can. The upper cap includes a terminal part including a first flat portion disposed at a center of the upper cap and a second flat portion extending from a periphery of the first flat portion, a peripheral part disposed at a periphery of the terminal part and stepped from the terminal part, and a connection part connecting the terminal part to the peripheral part.
Claims12
A secondary battery comprising:
- an electrode assembly;
- a can accommodating the electrode assembly;
- and
- a cap assembly coupled to an upper portion of the can and including an upper cap that transfers a current of the electrode assembly to an exterior of the can;
- wherein the upper cap includes
- a terminal part including a first flat portion disposed at a center of the upper cap and a second flat portion extending from a periphery of the first flat portion,
- a peripheral part disposed at a periphery of the terminal part and stepped from the terminal part, and
- a connection part connecting the terminal part to the peripheral part having a gas exhausting hole wherein the gas exhausting hole comprises a first curved portion disposed at a portion where the gas exhausting hole meets the terminal part and a second curved portion disposed at a portion where the gas exhausting hole meets the connection part and the peripheral part wherein the gas exhausting hole extends through a portion of the terminal part and a portion of the peripheral part.
A secondary battery comprising:
- an electrode assembly;
- a can accommodating the electrode assembly;
- and
- a cap that abuts one side of the can comprising a terminal portion at a center of the cap, a peripheral portion substantially parallel to the terminal portion, a connection portion coupling the terminal portion to the peripheral portion, and at least one opening in the connection portion that extends through a part of the terminal portion wherein the at least one opening comprises a gas exhausting hole wherein the gas exhausting hole comprises a first curved portion disposed at a portion where the gas exhausting hole meets the terminal part and a second curved portion disposed at a portion where the gas exhausting hole meets the connection part and the peripheral part, further comprising a plurality of openings in the connection portion, wherein each opening extends through a part of the terminal portion.
Dependencies are inferred from the claim text.