Rechargeable battery pack

A rechargeable battery pack comprising:

• a battery housing comprising an inner space;
• a plurality of unit battery cells accommodated in the inner space, each unit battery cell of the plurality of unit battery cells comprising a first electrode terminal and a second electrode terminal at respective upper and lower portions thereof;
• and
• a bus bar module electrically connected to the first electrode terminal and the second electrode terminal of each unit battery cell,
• wherein the bus bar module comprises:
• a first bus bar electrically connected to the first electrode terminal at the upper portion of each unit battery cell of the plurality of unit battery cells;
• a second bus bar electrically connected to the second electrode terminal at the lower portion of each unit battery cell of the plurality of unit battery cells;
• and
• a connector part electrically and obliquely connected to the first bus bar and the second bus bar,
• wherein a width direction of the connector part is obliquely oriented with respect to a length direction of each of the first bus bar and the second bus bar.