Battery module

Abstract

Provided is a battery module which can appropriately pressurize the laminate, absorb displacement of the applied load accompanying charge and discharge of the laminated battery cells during use of the lithium ion battery, and fix pressure plates at ends in the lamination direction of the lithium ion battery laminate to a case. A battery module includes: a cell laminate in which a plurality of battery cells having a power generation element and external body covering the power generation element are laminated; a fastening member which fastens the cell laminate; end plates disposed at both ends in a lamination direction of the cell laminate; a fastening nut which fastens the fastening member and the end plate at an outer side of the cell laminate; a stay fastened by the fastening nut; and a case accommodating the cell laminate, in which the cell laminate is fixed to the case by the stay.

Dependencies are inferred from the claim text.