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US 9,070,929 B2Granted
Secondary battery having zigzag-shaped sealing part
AssigneeLG Chem, Ltd.
InventorsSeong Yong Kim, Hanho Lee
Life of this patent
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Abstract
Disclosed is a secondary battery in which an electrode assembly is accommodated in a battery case, wherein the battery case is made of a laminate sheet including a resin layer and a metal layer and hermetically sealed through sealing of an outer circumferential surface thereof in a state of accommodating the electrode assembly, and at least one of sealing parts at the outer circumferential surface of the battery case is provided with at least two continuously formed recessed portions.
Claims17
A secondary battery in which an electrode assembly is accommodated in a battery case,
- wherein the battery case is made of a laminate sheet comprising a resin layer and a metal layer and hermetically sealed through sealing of an outer circumferential surface thereof in a state of accommodating the electrode assembly,
- wherein at least one of sealing parts at the outer circumferential surface of the battery case is provided with at least two continuously formed recessed portions,
- wherein at least two recessed portions are continuously formed to have a zigzag shape and are directly connected with each other, and
- wherein a recess depth of the recessed portion is 5% to 50% a width of the sealing part.
1 more element
Dependencies are inferred from the claim text.