Structural electrochemical storage assembly for a motor vehicle

A structural electrochemical storage assembly for a motor vehicle, comprising:

• a) at least one electrochemical energy storage device which comprises:
• at least one group of two blocks of solid electrochemical storage elements which are connected to each other in series or in parallel, and said two blocks of solid electrochemical storage elements being superimposed one above the other, each solid electrochemical storage element being composed of a cell with solid electrolyte and two external current collection means which are constituted by a negative current collection means and a positive current collection means which surround the cell, said solid electrochemical storage elements being electrically connected to each other, and an electrically insulating sheet being further arranged to separate the solid electrochemical storage elements which constitute a specific block of said two blocks of solid electrochemical storage elements,
• at least one component which is made of compressible material and which is arranged and compressed between said two blocks of electrochemical storage elements,
• a lateral insulator, and
• at least one central current collector which collects an interconnection current between said two blocks of electrochemical storage elements,
• b) a beam which comprises two recessed profile-members which are open on one of the faces thereof and which are assembled together via the respective open face and along respective edges thereof, said two recessed profile-members containing said at least one electrochemical energy storage device of said at least two superimposed blocks of electrochemical storage elements, and said two recessed profile-members being sized and assembled to keep said at least one component, which is made of compressible material and which is arranged between said two superimposed electrochemical blocks, compressed.