Nonaqueous electrolyte battery

摘要

It is an object to quickly disperse heat generated when short circuit occurs between a positive electrode and a negative electrode. A nonaqueous-electrolyte battery is disclosed which incorporates: an encapsulating medium (2) constituted by a laminated film in which a unit cell (1) is accommodated, wherein the laminated film of the encapsulating medium contains a metal material having a heat conductivity k at room temperatures which is 230Wm<-1>K<-1> or higher. Moreover, ratio R of the volume of the metal material portion of the encapsulating medium with respect to a capacity of 1mAh of the unit cell is 0.0002cm<3>/mAh ≤ R ≤ 0.003cm<3>/mAh.