Battery Pack

Abstract

A battery cell 101 has an internal structure where after building up an assembled unit by stacking positive-and negative-electrode materials 110, 111 and a separator 112 in some layers, the assembled units, together with an electrolyte, are sealed with aluminum laminates 114, 114. The battery pack 1 comprises cell assemblies 102 formed by stacking one on top of another in a plurality of the battery cells 101. A deformation-preventive plate 2 is inserted into a portion between each of the battery cells 101 stacked. The cell assemblies 102 inserted by the deformation-preventive plates 2 between each of the battery cells are pressed by cell assembly pressing plates 3, 3 from the upper and lower sides of the battery assemblies. The cell assemblies 102 are pressed by the cell assembly pressing plates 3, 3 to be subjected to some degree of pressure. Hence, the cell assemblies 102 expand not largely to be maintained as an approximately the same form as that at a normal time.

Dependencies are inferred from the claim text.