Bus bar assembly and frame assembly

A bus bar assembly installed in a frame for fixing a plurality of stacked battery cells, the bus bar assembly comprising:

• a bus bar fixed to an outside of the frame;
• a flexible printed circuit board electrically connected to the bus bar and configured to sense the plurality of the stacked battery cells;
• and
• a connection terminal including:
• a first surface facing in a first direction and being in contact with the flexible printed circuit board;
• a protrusion protruding in the first direction, the protrusion formed on the first surface and configured to pass through the flexible printed circuit board so as to be electrically connected to the flexible printed circuit board;
• and
• a second surface facing in a second direction, which is opposite to the first direction, the second surface being in contact with the bus bar so that the connection terminal is configured to be electrically connected to the bus bar through the second surface.