| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element capable of enhancing the degree of freedom of the design of a structure in which pressure difference occurs.SOLUTION: A power storage element 10 includes a positive electrode terminal 200, an electrode body 700, a positive electrode current collector 500 electrically connected to the positive electrode terminal 200 and the electrode body 700, and a container 100 for housing the electrode body 700 and the positive electrode current collector 500, and further includes a sealed portion 151 which is disposed in the container 100 and whose inside is hermetically sealed, and a fastening portion 220 which extends in a predetermined direction and fastens the positive electrode terminal 200 and the positive electrode current collector 500. The positive electrode current collector 500 includes a first portion 510 on the positive electrode terminal 200 side in the conductive path between the positive electrode terminal 200 and the electrode body 700, a second portion 520 on the electrode body 700 side in the conductive path between the positive electrode terminal 200 and the electrode body 700, and a fragile portion 530 connecting the first portion 510 and the second portion 520, the sealing portion 151 is disposed on the side of the fastening portion 220 when viewed from a predetermined direction, and is engaged with or fixed to the fragile portion 530.SELECTED DRAWING: Figure 4 |
