POWER STORAGE DEVICE

To provide a power storage device by which a foreign material from a safety valve can be suppressed from being scattered to outside in a nail pricking test.SOLUTION: A power storage device 1 comprises: an electrode assembly 10 arranged by laminating a plurality of positive electrodes 11 and a plurality of negative electrodes 12 to alternate with a corresponding separator 13 arranged therebetween; a case 20 which contains the electrode assembly 10; a positive electrode terminal structure M including a positive electrode terminal 23 connected to a positive electrode tab 14b; a negative electrode terminal structure N including a negative electrode terminal 24 connected to a negative electrode tab 16b; a safety valve 40 provided on the case 20; and a shield member 50 disposed between the case 20 and the electrode assembly 10 and covering the safety valve 40. The shield member 50 is positioned between the positive electrode terminal structure M and the negative electrode terminal structure N by the positive electrode terminal structure M and the negative electrode terminal structure N.SELECTED DRAWING: Figure 6 【課題】釘刺し試験時に安全弁から異物が外部に飛び散ることを抑制することが可能な蓄電装置を提供する。【解決手段】蓄電装置１は、複数の正極１１と、複数の負極１２とがセパレータ１３を介して交互に積層された電極組立体１０と、電極組立体１０を収容するケース２０と、正極タブ１４ｂと接続される正極端子２３を含む正極端子構造体Ｍと、負極タブ１６ｂと接続される負極端子２４を含む負極端子構造体Ｎと、ケース２０に設けられた安全弁４０と、ケース２０と電極組立体１０との間に配置され、安全弁４０を覆う遮蔽部材５０と、を備え、遮蔽部材５０は、正極端子構造体Ｍと負極端子構造体Ｎとによって正極端子構造体Ｍと負極端子構造体Ｎとの間に位置決めされている。【選択図】図６