POWER STORAGE ELEMENT

PROBLEM TO BE SOLVED: To provide a power storage element equipped with an electrode terminal having a configuration capable of improving productivity.SOLUTION: A power storage element includes: a container having a wall part; an electrode terminal penetrating through the wall part in a first direction; and an electrode body housed in the container. The electrode terminal has an outside terminal and an inside terminal. The outside terminal has an inwardly extending shaft extending toward the inside terminal. The inside terminal has an outwardly extending shaft extending toward the outside terminal. One of the inwardly extending shaft and the outwardly extending shaft has a recess into which the other is inserted, and the electrode body is joined to the joint surface of the inside terminal, which is opposite to the electrode body in the first direction.SELECTED DRAWING: Figure 3 【課題】生産性を向上させることができる構成の電極端子を備える蓄電素子を提供する。【解決手段】蓄電素子は、壁部を有する容器と、壁部を第一方向に貫通する電極端子と、容器に収容される電極体とを備え、電極端子は、外側端子と内側端子とを有し、外側端子は、内側端子に向けて延びる内方延在軸を有し、内側端子は、外側端子に向けて延びる外方延在軸を有し、内方延在軸及び外方延在軸のうちの一方は、他方が挿入される凹部を有し、内側端子の、第一方向において電極体と対向する接合面に、電極体が接合される。【選択図】図３