Abstract: A battery pack includes: a plurality of first battery modules and a plurality of second battery modules that are arranged in two rows in a first direction; a battery case that houses the plurality of first and second battery modules and includes a plurality of cross beams for partitioning between the plurality of first battery modules and between the plurality of second battery modules; a plurality of first slave BMSs that are positioned at one side of the plurality of first battery modules facing the plurality of second battery modules and are arranged in the first direction; and a plurality of second slave BMSs that are positioned on one side of the plurality of second battery modules facing the plurality of first battery modules and are arranged in the first direction.

Abstract: A battery module includes a plurality of first battery modules and a plurality of second battery modules; a battery case that houses the battery modules and includes a plurality of cross beams for partitioning between the plurality of first battery modules and between the plurality of second battery modules; a plurality of first slave BMSs positioned at one side of the plurality of first battery modules facing the plurality of second battery modules; a plurality of second slave BMSs that are positioned at one side of the plurality of second battery modules facing the plurality of first battery modules; a plurality of first reflected wave absorbers arranged on one side of the plurality of first battery modules facing the plurality of second battery modules; and a plurality of second reflected wave absorbers arranged on one side of the plurality of second battery modules facing the plurality of first battery modules.