Energy storage device

Abstract

To provide a power storage device that can improve vibration resistance or impact resistance.SOLUTION: A power storage device 1 includes a power storage unit 10 having a power storage element 100 and a spacer 200 (holder 200c) arranged in a first direction, and a case 300 that includes a case body 310 in which an opening 310a facing the second direction is formed, and that houses the power storage unit 10. The case 300 includes a case wall 314 facing in a first direction. The spacer 200 (holder 200c) is arranged at a position facing and adjacent to the case wall 314. The case 300 includes a first case surface 311a facing one side in the second direction and in contact with the power storage unit 10, and a second case surface 314b that faces the other side in the second direction and contacts the spacer 200 (holder 200c). The spacer 200 (holder 200c) includes ribs 231a and 234a that protrude toward one side in the second direction toward the second case surface 314b and come into contact with the second case surface 314b.SELECTED DRAWING: Figure 6

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