POWER STORAGE DEVICE

To provide a power storage device which has improved safety with a simple configuration.SOLUTION: A power storage device 1 comprises a power storage element 100, an exhaust duct 350, and an insulation member 320 disposed between the exhaust duct 350 and the power storage element 100. The power storage element 100 is disposed in such a posture that a gas exhaust valve 131 faces in a positive direction along a Z-axis. The exhaust duct 350 has a metal facing surface part 361 which has a through-hole 362 at a position facing the gas exhaust valve 131. The insulation member 320 has an insulation main body part 321 and a first cylinder part 323. The insulation main body part 321 is located between the facing surface part 361 of the exhaust duct 350 and the power storage element 100. An opening 322 is formed at a position, on the insulation main body part 321, between the gas exhaust valve 131 and the through-hole 362. The first cylinder part 323 forms a space communicating with the opening 322 and penetrates the through-hole 362 of the exhaust duct 350 so as to protrude to the inside of the exhaust duct 350.SELECTED DRAWING: Figure 7 【課題】簡易な構成で安全性が向上された蓄電装置を提供すること。【解決手段】蓄電装置１は、蓄電素子１００と、排気ダクト３５０と、排気ダクト３５０及び蓄電素子１００の間に配置された絶縁部材３２０と、を備える。蓄電素子１００は、ガス排出弁１３１がＺ軸プラス方向に向けられた姿勢で配置されている。排気ダクト３５０は、ガス排出弁１３１に対向する位置に貫通孔３６２が形成された金属製の対向面部３６１を有する。絶縁部材３２０は、絶縁本体部３２１と第一筒部３２３とを有する。絶縁本体部３２１は、排気ダクト３５０の対向面部３６１と蓄電素子１００との間に位置する。絶縁本体部３２１の、ガス排出弁１３１と貫通孔３６２との間の位置に、開口部３２２が形成されている。第一筒部３２３は、開口部３２２に連通する空間を形成し、排気ダクト３５０の貫通孔３６２を貫通して排気ダクト３５０の内部に突出する。【選択図】図７