Battery pack

A battery pack comprising:

• a battery assembly that includes a plurality of battery cells which are arranged while positive electrodes and negative electrodes of the battery cells are alternately adjoined each other;
• a busbar module that includes a plurality of conductors and an insulating member which holds the conductors, each of the conductor interconnecting the positive electrode and the negative electrode of each of the adjoining battery cells in the battery assembly;
• a battery control unit provided at an end portion of the battery assembly in a direction in which the battery cells are arranged;
• and
• an extraction conductor that connects a total electrode terminal connected to a total positive electrode or a total negative electrode of the battery assembly to a main circuit terminal of the battery control unit,
• wherein the extraction conductor has a water escape portion which is located below an imaginary line connecting the total electrode terminal to the main circuit terminal, and an upper end of the water escape portion is formed at a location that is lower than a lower end of the main circuit terminate;
• wherein the extraction conductor has a first cutout portion which is located between the total electrode terminal and the main circuit terminal;
• wherein the water escape portion has a second cutout portion so that the water escape portion is shaped in U shape, the second cutout portion being communicated with the first cut out portion;
• and
• wherein a bottom of the second cutout portion is formed at a position lower than the lower end of the main circuit terminal.