Bus bar module

A bus bar module comprising:

• a flexible printed circuit board including a trunk line portion and a branch portion branching from the trunk line portion;
• a thermistor mounted on the branch portion;
• a bus bar connected to the flexible printed circuit board;
• a case having a routing path supporting the trunk line portion, the case being capable of being assembled with a battery module;
• and
• an elastic member configured to press, toward a battery cell of the battery module, a predetermined region of the branch portion, the predetermined region having the thermistor disposed therein, wherein
• the case has a first surface facing the battery module and a second surface on an opposite side of the first surface,
• the routing path is disposed on the second surface,
• the elastic member is assembled with the case from a side of the first surface, and
• a position of the elastic member in a plan view of the case is a position overlapping the routing path.