| CPC H01M 50/204 (2021.01) [H01M 10/0481 (2013.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H01M 10/613 (2015.04); H01M 10/6556 (2015.04); H01M 50/507 (2021.01); H01M 50/519 (2021.01)] | 16 Claims |
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1. A battery module comprising:
a plurality of battery cells stacked on each other in a first direction and forming a stacked structure;
a pair of end plates respectively being in surface contact with a first end and a second end of the stacked structure in the first direction;
a pair of bus bar assemblies disposed, respectively, at third and fourth ends of the stacked structure in a second direction perpendicular to the first direction, and configured to bond electrodes of the plurality of battery cells respectively disposed at the third and fourth ends of the stacked structure in the second direction;
a first cover covering a first surface of the stacked structure in a third direction perpendicular to the first direction and the second direction;
a first clamp including a first end and a second end respectively bonded to the pair of end plates across an outside surface of the first cover, wherein the first clamp is disposed at a center of the first surface of the stacked structure relative to the second direction; and
a second clamp including a first end and a second end respectively bonded to the pair of end plates across a second surface, which faces the first surface, of the stacked structure, wherein the second clamp is disposed at a center of the second surface of the stacked structure relative to the second direction,
wherein bonding locations of the first clamp and the second clamp are respectively disposed at a center portion of the pair of end plates relative to the second direction so as to maintain a distance between the pair of end plates when a battery cell of the plurality of battery cells swells,
wherein each end plate of the pair of end plates includes:
an inner plate made of an insulating material and being in surface contact with the stacked structure; and
an outer plate covering the inner plate and having rigidity greater than rigidity of the inner plate, and
wherein the outer plate is disposed apart from the stacked structure at a predetermined distance at an end adjacent to the first cover, and defines an insertion space configured to receive a temperature sensor.
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