BATTERY AND MANUFACTURING METHOD FOR BATTERY

摘要

A battery includes a battery case; an outside member that is arranged on an outer portion of the battery case, and is made of an Al—Mg alloy or Al—Mg—Si alloy; a collector member made of pure aluminum, which has i) an extending portion that extends from within the battery case, passes through a first through-hole provided in the battery case and a second through-hole in the outside member, and protrudes out of the battery case, and ii) a crimped portion that spreads out toward an outside of the second through-hole from the extending portion, and circularly covers a periphery of the second through-hole in the outside member; as well as a bead that electrically connects an outer peripheral edge portion of the crimped portion to the outside member; and an additional bead that is positioned farther toward a radial inside of the crimped portion than the bead.

主权项

1. A battery comprising:
a battery case; an outside member that is arranged on an outer portion of the battery case, and is made of an Al—Mg alloy or Al—Mg—Si alloy; a collector member made of pure aluminum, which has i) an extending portion that extends from within the battery case, passes through a first through-hole provided in the battery case and a second through-hole that passes through the outside member, and protrudes out of the battery case, and ii) a crimped portion that spreads out toward an outside of the second through-hole from the extending portion, and circularly covers a periphery of the second through-hole in the outside member, and fixes the extending portion and the outside member to the battery case; a bead that is made of a first alloy derived from the crimped portion and the outside member, and electrically connects an outer peripheral edge portion of the crimped portion to the outside member; and an additional bead that is made of a second alloy derived from the bead and the crimped portion, and is positioned farther toward a radial inside of the crimped portion than the bead.