| 摘要 |
PROBLEM TO BE SOLVED: To suppress the loosening of coupling means for coupling a bus bar electrically connecting a plurality of power storage devices, a cathode terminal, and an anode terminal even when used under a vibration-prone condition, thereby preventing damage to the interior of the power storage devices caused by vibration.SOLUTION: A secondary battery module is a battery pack 10 in which a plurality of single cells 11 are electrically connected to each other by a bus bar 12, the bus bar 12 being fixed via coupling means to a cathode terminal 14p or an anode terminal 14n of the single cell 11. At least a coupling member (washer 19) in contact with the bus bar 12 from among coupling members (nut 18, washer 19) constituting the coupling means and the bus bar 12 are made of copper-containing metal. |
