| abstract |
In a battery pack, a waterproof structure for a convex terminal of a unit cell can be easily realized and connected to the convex terminal of the unit cell regardless of the structure of the outer case and the number of unit cells is large. Insulation between the lead plate and the outer can. A core pack 20 has a double-sided tape piece 41 attached to a front surface 21a of a unit cell group 21 and a double-sided tape piece 42 attached to a rear surface 21b. On the front side of the double-sided tape piece 41, lead plates 51 to 55 are arranged side by side in the horizontal direction, and on the rear side of the double-sided tape piece 42, lead plates 61 to 66 are arranged side by side in the horizontal direction. Has been. The lead plates 51 to 55 and 61 to 66 are connected to the terminals of each unit cell 30 by welding. A waterproof tape piece 71 is attached from the front side of the arranged lead plates 51 to 55, and a waterproof tape piece 72 is attached from the rear side of the lead plates 61 to 66. [Selection] Figure 2 |