| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack having a cooling structure capable of uniformly cooling a square battery even when the square battery is inflated.SOLUTION: A battery pack 100 includes plural square batteries 10. The plural square batteries 10 are disposed with longer faces thereof opposite to each other via a resin plate spacer 20. The spacer 20 has plural ribs 21 formed on the surface thereof in a direction perpendicular to the disposition direction of the square batteries 10. The plural ribs 21 are abutted on the longer side faces of the square batteries 10. Between the neighboring square batteries 10, plural cooling medium paths 22 partitioned between the neighboring ribs 21 are formed along a longitudinal direction of the rib 21. The cross sectional area of the plural cooling medium paths 22 is arranged to get smaller toward the end from the center of the longer side face of the square battery 10. |
