| abstract |
Lithium electrochemical accumulator comprising at least a first package housing at least one electrochemical cell, said first package comprising at least: an inner layer, thermally insulating, adapted to confine inside the first package the heat released even in case abnormal operation of a cell C and to protect the cell (s) from heat external to the first package, - an outer layer superimposed on the inner layer, the outer layer being mechanically resistant and fire-resistant, and a cooling device comprising at least one heat pipe whose enclosure crosses the first package (s) in a sealed manner and that the heated zone of the heat pipe (s) is located at inside the first package (s) and that the cooled area of the heat pipe (s) is located outside the first package (s). |