| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device pack that makes a screw unlikely to be loosened due to fatigue of a sealing material.SOLUTION: A power storage device pack 1 comprises: a case 2 having a plurality of screw holes 9 provided in an edge wall part 8 disposed around an opening 2a; a power storage device module 3 accommodated in the case 2; a lid 4 having a plurality of through-holes 10 provided at positions corresponding to the screw holes 9, and covering and closing the opening 2a; a sealing material 5 disposed between the edge wall part 8 and lid 4; and a plurality of bolts 6 for fixing the lid 4 and the case 2. Each bolt 6 includes: a head part 12 pressing the lid 4; a shaft part 13 helically engaged with the corresponding screw hole 9, disposed between the head part 12 and the shaft part 13, and having a step 14 pressing the edge wall part 8 by passing through the corresponding through-hole 10. By screwing the shaft part 13 into the screw hole 9 tightly, the lid 4 and the edge wall part 8 are tightened and fixed together.SELECTED DRAWING: Figure 3 |
