| 摘要 |
PROBLEM TO BE SOLVED: To provide an assembly of secondary battery modules capable of restraining contact resistance by energizing suitable elastic force to the respective battery modules integrally assembled to stop bulging of a battery container and by energizing predetermined pressure to a layered product of each electrode material to enhance contacting capability. SOLUTION: Respective pairs of engaging projections are formed on both left and right or upper and lower surfaces facing to each other of a nearly rectangular secondary module comprising an aggregation of secondary batteries composed by housing, in the rectangular battery container, an electrode body composed by interposing and laminating a separator between a plate-like positive electrode material and a plate-like negative electrode material and by sealing it along with an electrolyte. The engaging projections are fitted to engaging projections of another module, so that both the modules are fixed to each other by restraining their upper and lower and left and right positions by each other. More preferably, a flat space corresponding to the height of the engaging projections is formed between the two facing surfaces of the pair of the secondary battery modules fixed by the engaging projections and a pressing force energizing member is interlaid in the flat space.
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