| 摘要 |
<p>In a battery, collectors exposed at at least one of the end faces of a power generation element are inserted into the opening portions (510) of a plurality of protruding portions (51) of a collector terminal (5) and are welded. The protruding portions (51) form welding pieces (511) having the opening portions (510) at the lower ends (513). The welding pieces (511) are formed so that the thickness on the side of the lower ends (513) of the protruding portions (51) is thicker than the thickness on the side of tops (512). Alternatively, the welding pieces (511) are formed so that the angle (?) of the tops (512) on the side of the opening portions (510) is 28° or less, inflection points (511a) are present between the tops (512) and lower ends (513) of the protruding portions (51) on the opening side, and the angle (a) at the inflection points (511a) on the side of the lower ends (513) is larger than the angle (?) at the inflection points (511a) on the side of the tops (512).</p> |
