H ELECTRICITY
H01 ELECTRIC ELEMENTS
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
H01M50/00 Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
H01M50/10 Primary casings; Jackets or wrappings
H01M50/102 characterised by their shape or physical structure
H01M50/103 prismatic or rectangular