POWER STORAGE DEVICE

To provide a power storage device with which it is possible to easily arrange power storage elements in the inside of an outer packaging.SOLUTION: Provided is a power storage device 10 comprising a plurality of power storage elements 100 and an outer packaging 200 in which the plurality of power storage elements 100 are accommodated. The plurality of power storage elements 100 include a first power storage element 101 and a second power storage element 102 which are arranged side by side in a first direction (Y axis direction), and the outer packaging 200 includes a bottom wall 211 that faces the plurality of power storage elements 100 in a second direction (Z axis direction) orthogonal to the first direction, an opening 214 that opens facing a third direction (X axis direction) orthogonal to the first and second directions, and which the first power storage element 101 can pass through, and a guide part 211a which is located between the first power storage element 101 and the second power storage element 102, and which extends toward the opening 214.SELECTED DRAWING: Figure 6 【課題】蓄電素子を外装体内に容易に配置できる蓄電装置を提供する。【解決手段】複数の蓄電素子１００と、複数の蓄電素子１００が収容される外装体２００と、を備える蓄電装置１０であって、複数の蓄電素子１００は、第一方向（Ｙ軸方向）に並ぶ第一蓄電素子１０１及び第二蓄電素子１０２を有し、外装体２００は、第一方向と直交する第二方向（Ｚ軸方向）において、複数の蓄電素子１００と対向する底壁２１１と、第一方向及び第二方向と直交する第三方向（Ｘ軸方向）に向けて開口する開口部２１４であって、第一蓄電素子１０１が通過可能な開口部２１４と、第一蓄電素子１０１及び第二蓄電素子１０２の間に配置され、開口部２１４に向けて延びるガイド部２１１ａと、を有する。【選択図】図６