ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE DEVICE MODULE

摘要

An electric storage device includes an electrode assembly including a winding core and electrodes, and a case. The case and the winding core each have a rigidity satisfying 0.01≦P2/P1≦100, where P2/P1 is a ratio of a first pressure P1 applied to a first part as a specific part of the case by an indenter when the first part is pressed by the indenter so as to be displaced 1 mm from the initial position in a state where the electrode assembly is not housed in the case, and a second pressure P2 applied to a second part as a part of the winding core facing the first part by the indenter when the second part is pressed by the indenter so as to be displaced 1 mm from the initial position in a state where the electrodes are not wound.

主权项

1. An electric storage device comprising:
an electrode assembly including a winding core and electrodes wound around a circumference of the winding core; and a case including a circumferential wall, the case housing the electrode assembly therein in a state where the electrodes are closely stacked between the circumferential wall and the winding core, wherein the case and the winding core each have a rigidity satisfying 0.01≦P2/P3≦100, where P2/P1 is a ratio of a first pressure P1 applied to a first part as a specific part of the case by an indenter when the first part is pressed by the indenter so as to be displaced 1 mm from the initial position in a state where the electrode assembly is not housed in the case, and a second pressure P2 applied to a second part as a part of the winding core facing the first part by the indenter when the second part is pressed by the indenter so as to be displaced 1 mm from the initial position in a state where the electrodes are not wound.