| 摘要 |
A current collector (68) which is electrically connected to a first electrode plate (10) or a second electrode plate (20) includes a tubular current collection section (68c). An external terminal (62) which is electrically connected to the current collector (68) includes a tubular terminal section (62c) into which the tubular current collection section (68c) is inserted. The tubular current collection section (68c) has, before being inserted into the tubular terminal section (62c), a greater outer diameter (R) than the inner diameter (S) of the tubular terminal section (62c). In the insertion process, the diameter of the tubular current collection section (68c) is reduced or the diameter of the tubular terminal section (62c) is expanded so that the outer diameter (R) of the tubular current collection section (68c) is smaller than or equal to the inner diameter (S) of the tubular terminal section (62c), and then the tubular current collection section (68c) is inserted into the tubular terminal section (62c). After that, the outer peripheral surface (68h) of the tubular current collection section (68c) and the inner peripheral surface (62h) of the tubular terminal section (62c) are made to be in close contact with each other by the restoring force of the tubular current collection section (68c) having the reduced diameter or of the tubular terminal section (62c) having the expanded diameter, and as a result, the tubular current collection section (68c) is affixed to the tubular terminal section (62c). |
