Bus bar assembly, battery pack comprising bus bar assembly, and vehicle comprising battery pack

A battery pack, comprising:

• a plurality of battery cells arranged along a longitudinal direction and a width direction of the battery pack;
• and
• a bus bar assembly disposed at one side of the plurality of battery cells and configured to electrically connect the plurality of battery cells,
• wherein the bus bar assembly includes:
• a connection bus bar connected in series and in parallel to adjacent battery cells of the plurality of battery cells in the longitudinal direction and the width direction;
• and
• a fusing portion formed in the connection bus bar and configured to block an electrical connection of a battery cell in which an abnormal situation occurs in both serial and parallel connection directions from among the plurality of battery cells,
• wherein the connection bus bar includes:
• a parallel connection portion formed along any one of the longitudinal direction and the width direction and configured to connect the adjacent battery cells in parallel;
• a serial connection portion formed along the other one of the longitudinal direction and the width direction and configured to connect the adjacent battery cells in series;
• and
• an interconnection portion configured to connect the parallel connection portion and the serial connection portion to each other, and
• wherein the fusing portion is integrally formed in the interconnection portion where the parallel connection portion and the serial connection portion intersects.