Battery pack, electrical device, and electrical device main body

A battery pack, comprising:

• a first case having a slot portion for exposing a battery-side terminal portion, and a guide portion for guiding attachment to an electrical device main body;
• a second case for defining a space for accommodating a plurality of battery cells by being joined to the first case;
• a separator holding the battery cell;
• a circuit board fixed to a side of the separator facing the first case;
• and
• the battery-side terminal portion fixed at a position corresponding to the slot portion of the circuit board and configured to be connectable to a main body side terminal portion of the electrical device main body,
• wherein the separator has a connecting portion extending around the circuit board when viewed from above and elastically deformed, and
• the second case has a connected portion connected to the connecting portion.

An electrical device main body, comprising

• a battery pack attachment portion to which a battery pack having a battery-side terminal portion;
• and
• a main body side terminal portion provided in the battery pack attachment portion and connected to the battery-side terminal portion,
• wherein the battery pack attachment portion attaches the battery pack comprising a first case having a guide portion for guiding attachment to the battery pack attachment portion, a second case for defining a space for accommodating a battery cell by being joined with the first case, a separator holding the battery cell and fixing a circuit board to a side of the separator facing the first case, a connecting portion provided at the separator and provided around the circuit board when viewed from above, at a position facing the first case, and a connected portion provided at the first case and/or the second case and connected to the connecting portion at a portion corresponding to the connecting portion.