Patent ID: 9666842
Date: 2017-05-30
CPC Classifications: H01M,Y02E

Claim:
1. A rechargeable battery pack, comprising: a holder accommodating a plurality of unit cells, wherein each unit cell includes a rechargeable battery; and a case accommodating the holder and comprising i) a bottom portion and ii) a cover placed over the bottom portion and the holder, wherein the holder includes a plurality of protrusions that protrude toward the bottom portion, wherein the bottom portion has a plurality grooves defined to respectively correspond to the protrusions, wherein each of the unit cells has a substantially cylindrical shape, wherein the holder includes a plurality of receiving portions respectively configured to accommodate the unit cells, wherein the protrusions are divided into pairs, wherein the protrusions of each pair are formed on different sides of a corresponding one of the receiving portions, wherein the receiving portions are arranged in a first direction, and wherein each pair of protrusions is arranged in the first direction.