US 9,812,673 B2 | ||
Battery pack | ||
Jae-Il Seong, Yongin-si (KR) | ||
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR) | ||
Filed by SAMSUNG SDI CO., LTD., Yongin-si, Gyeonggi-do (KR) | ||
Filed on Jun. 2, 2014, as Appl. No. 14/294,027. | ||
Claims priority of application No. 10-2014-0006740 (KR), filed on Jan. 20, 2014. | ||
Prior Publication US 2015/0207109 A1, Jul. 23, 2015 | ||
Int. Cl. H01M 2/02 (2006.01); H01M 2/04 (2006.01) |
CPC H01M 2/0202 (2013.01) [H01M 2/0404 (2013.01); H01M 2002/0205 (2013.01); H01M 2220/30 (2013.01)] | 18 Claims |
1. A battery pack comprising:
a case comprising a first main wall, a second main wall facing the first main wall, and an uneven portion comprising a plurality
of uneven portions formed in at least one of the first main wall and the second main wall, the plurality of uneven portions
comprising a plurality of first uneven portions comprising a convex portion, a concave portion, and a connection portion that
are continuously formed in the first main wall such that the convex portion and the concave portion are connected via the
connection portion, the convex portion being outwardly convex such that a recess corresponding to the convex portion is formed
at an inner surface of the first main wall, the concave portion being outwardly concave such that an embossing corresponding
to the concave portion is formed at the inner surface of the first main wall;
an electrode assembly received in an internal space of the case; and
a cap plate sealing an opening at a first end of the case to protect the electrode assembly, the first end being spaced apart
from a second end of the case in a longitudinal direction,
wherein the uneven portion is extended from the first end of the case to the second end of the case in the longitudinal direction,
wherein the plurality of first uneven portions further comprises another outwardly convex portion spaced apart from the convex
portion in a direction transverse to the longitudinal direction, and
wherein the first main wall and the second main wall have a curvature, and a curvature radius of the second main wall is greater
than a curvature radius of the first main wall.
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