Button-type secondary battery
AssigneeLG Energy Solution, Ltd.
InventorsJi Min JUNG, Je Jun LEE, Jin Soo LEE, Bu Won SON, Jae Won LIM, Jin Yeong LEE
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Abstract
A button-type secondary battery includes an electrode assembly in which electrodes and separators are alternately layered; a can case having an internal accommodation space in which the electrode assembly is accommodated; and an electrode tab having one side connected to each of the electrodes of the electrode assembly and the other side welded to the can case. A welding pattern appearing at a welding part, at which the electrode tab is welded to the can case, includes a circular shape and an additional shape in addition to the circular shape.
Claims14
A button-type secondary battery comprising:
- an electrode assembly in which electrodes and separators are alternately layered;
- a can case having an internal accommodation space in which the electrode assembly is accommodated;
- and
- an electrode tab having one side connected to each of the electrodes of the electrode assembly and the other side welded to the can case,
- wherein a welding pattern appearing at a welding part, at which the electrode tab is welded to the can case, comprises a circular shape and an additional shape in addition to the circular shape.
Dependencies are inferred from the claim text.