Patent ID: 8748025

Claim:
A cell holding device for holding end portions of cells of a battery, comprising: an insertion cavity into which the end portion of each of the cells is inserted; an engaging member disposed in the insertion cavity such that the engaging member is movable in a direction of insertion in which the end portion of the cell is inserted, wherein the engaging member includes an abutting portion that abuts on an end face of the cell; and a guide that pushes the engaging member toward an inner radius of the insertion cavity as the engaging member moves in the direction of insertion, wherein: the engaging member is fitted in a groove formed as a concave portion on an inner circumferential surface of the insertion cavity, and the guide includes a tapered face formed at the bottom of the groove, and when the end portion of the cell is inserted into the insertion cavity, the engaging member that is sandwiched between the guide and a side circumferential surface of the cell holds the end portion of the cell, and the abutting portion is pushed by the end face of the cell so that the engaging member moves to a bottom of the insertion cavity to be sandwiched between the tapered face and the side circumferential surface of the cell.