Patent ID: 7858221

Claim:
A lead terminal for electrically connecting a first connected body and a second connected body, the lead terminal comprising: a welding portion in which electricity is caused to flow in the state caused to be in contact with an external terminal of the first connected body so that the welding portion is resistance-welded to the external terminal of the first connected body; a connecting portion connected to an external terminal of the second connected body; and a conductive portion positioned between the welding portion and the connecting portion, and serving to allow these portions to electrically conduct, wherein the lead terminal is a laminated material having at least a first conductive layer of a first conductivity and a second conductive layer of a second conductivity, and wherein the welding portion is constituted only by the first conductive layer that has a lower conductivity than the second conductive layer, and wherein the welding portion is formed so that its thickness is thinner than thickness of the conductive portion.