Patent ID: 9698392
Date: 2017-07-04
CPC Classifications: B60L,H01M,Y02E,Y02P,Y02T

Claim:
1. An electricity storage module comprising: a storage cell group in which a plurality of quadrangular storage cells are stacked; two end plates provided at two opposite ends of the storage cell group in a stacking direction of the storage cells; two restraining bands that extend along mutually parallel side surfaces of the storage cell group and that are connected to the two end plates and restrain the storage cell group, each of the two restraining bands having a flat surface that extends parallel to the side surfaces of the storage cell group and bent portions that are bent from two opposite ends of the flat surface in a short-dimension direction and that extend in such a direction that the bent portions of one of the two restraining bands and the bent portions of the other one of the two restraining bands extend toward each other following shapes of corner portions of the storage cell group; and at least one intermediate plate disposed at an internal position in the storage cell group in the stacking direction, wherein, of the two restraining bands, the bent portions that extend toward each other or portions near the bent portions are connected to the intermediate plate, and wherein the bent portions of each of the two restraining bands are a first bent portion and a second bent portion, and the first bent portion of each restraining band is narrower in width than the second bent portion.