Patent ID: 8512894

Claim:
A secondary battery, comprising: at least one rectangular-shaped, rechargeable bare cell including a first surface, a second surface adjacent to the first surface and including an electrode terminal, a third surface opposite the first surface, a fourth surface opposite the second surface and a fifth surface opposite a sixth surface, the first through fourth surfaces being smaller and narrower than the fifth and the sixth surfaces, the second and fourth surfaces being shorter than each of the first and third surfaces, the fifth and sixth surfaces being large surfaces adjacent to each of the first through fourth surfaces; a circuit part electrically coupled to the at least one bare cell; and a case comprised of an insulator covering the circuit part coupled to the at least one bare cell, wherein the case includes a main case arranged on the first surface of the at least one bare cell, a first sub case arranged on the second surface of the at least one bare cell and a second sub case arranged on the fourth surface of the at least one bare cell, wherein the first sub case includes a sub cap body that covers the second surface of the at least one bare cell and a plurality of sub cap sides extending from the sub cap body and covering edge portions of the third, fifth and sixth surfaces of the at least one bare cell, which are adjacent to the second surface, the second sub case includes a sub cap body that covers the fourth surface of the at least one bare cell and a plurality of sub cap sides extending from the sub cap body and covering edge portions of the third, fifth and sixth surfaces of the at least one bare cell, which are adjacent to the fourth surface, wherein the main case and the first sub case are integrally and rotatably connected via a first connecting part, and the main case and the second sub case are integrally and rotatably connected via a second connecting part.