| 摘要 |
<p>Disclosed herein is a battery pack. The coupling between a upper case and a lower case is accomplished by ultrasonic welding at the contact regions between the upper and lower ends thereof and a film-shaped label attached to the outer surfaces of the cases, which are coupled with each other, and the upper surface of the upper case and the lower surface of the lower case are open such that the battery body can be directly attached to the label without a step. The battery pack can be manufactured with a smaller thickness that any conventional battery packs, the heat dissipation from the battery body can be efficiently accomplished in the course of charging and discharging, and the battery pack provides structural stability required for a battery pack and an increased case coupling force.</p> |
