{
  "$type": "site.standard.document",
  "description": "The present invention relates to a secondary battery and a method for manufacturing same, and the technical problem to be solved is to prevent damage due to fatigue loading that may occur during ultrasonic welding between an electrode tab and an auxiliary tab, by strongly laser welding between the…",
  "path": "/patents/1309680",
  "publishedAt": "2022-01-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/536",
    "Samsung SDI Co., Ltd."
  ],
  "textContent": "The present invention relates to a secondary battery and a method for manufacturing same, and the technical problem to be solved is to prevent damage due to fatigue loading that may occur during ultrasonic welding between an electrode tab and an auxiliary tab, by strongly laser welding between the auxiliary tab and a current collecting portion of a single plate. To this end, disclosed is a secondary battery and a method for manufacturing same, wherein the secondary battery comprises: an electrode assembly having an electrode tab; an auxiliary tab which is a metal single plate mechanically and electrically coupled to the electrode tab; and a current collecting portion which is mechanically and electrically coupled to the auxiliary tab, wherein the auxiliary tab comprises: a tab connection portion welded to the electrode tab; a current collecting connection portion welded to the current collecting portion and disposed parallel to the tab connection portion; and a bending portion which connects between the tab connection portion and the current collecting connection portion and surrounds one side of the current collecting portion.",
  "title": "SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME"
}