All solid state battery having anode current collector including elastic portion and all solid state battery system having the anode current collector

Abstract

A main object of the present disclosure is to provide an all solid state battery with high coulomb efficiency even when the thickness of an anode active material layer is varied due to charge and discharge. The above object is achieved by providing an all solid state battery comprising: a power generation element including a cathode, a solid electrolyte layer, and an anode, in this order, and an exterior body storing the power generation element, and the anode includes at least an anode current collector, and the anode current collector includes a current collection part, and an elastic part placed on other side of the solid electrolyte layer, with respect to the current collection part.

What is claimed is: 
     
         1 . A battery comprising:
 a power generation element including a cathode, an electrolyte layer, and an anode, in this order, and   an exterior body storing the power generation element,   wherein the anode includes at least an anode current collector,   the anode current collector includes a current collection portion, and an elastic portion wherein the current collection portion is placed between the electrolyte layer and the elastic portion, and   an elastic modulus of the anode current collector is 2.14×10 3  N/mm 2  or more and 4.08×10 3  N/mm 2  or less.   
     
     
         2 . The battery according to  claim 1 , wherein the electrolyte layer is solid electrolyte layer and the battery is all solid state battery. 
     
     
         3 . A car having an all solid state battery comprising:
 a power generation element including a cathode, a solid electrolyte layer, and an anode, in this order, and   an exterior body storing the power generation element,
 wherein the anode includes at least an anode current collector, 
 the anode current collector includes a current collection portion, and an elastic portion wherein the current collection portion is placed between the solid electrolyte layer and the elastic portion, and 
 an elastic modulus of the anode current collector is 2.14×10 3  N/mm 2  or more and 4.08×10 3  N/mm 2  or less.