SECONDARY-BATTERY COLLECTOR TERMINAL AND MANUFACTURING METHOD OF SECONDARY BATTERY
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United States of America Patent
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app pub date -
Aug 27, 2015
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Aug 29, 2014
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Abstract
A secondary-battery collector terminal to be welded to an edge portion of an electrode body includes: a flat portion having a front surface and a back surface; and a welding projection portion having a linearly extending shape, the welding projection portion being formed by projecting a part of the flat portion. The welding projection portion has a shape projecting relative to the flat portion so that a front-surface side thereof exhibits a projecting shape and a back-surface side thereof exhibits a recessed shape. When a sectional shape of the welding projection portion in a direction perpendicular to an extending direction thereof is viewed, a surface shape of that first region of the welding projection portion which is placed on the front-surface is curved, and a surface shape of that second region of the welding projection portion which is placed on a back-surface side relative to the first region is flat.
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