The utility model relates to a flexible system of filling of electric automobile intelligence more belongs to electric automobile charging facility technical field. The utility model discloses a flexible system of filling includes individual module and the individual electric pile that fills of N of charging of N more, N is 3 at least, the module of respectively charging with respectively fill electric pile and be connected through the dc bus one -to -one that corresponds, be provided with matrix power switching unit between each dc bus, does this matrix power switching unit include N (N 1 )Article / 2, connection bus, two arbitrary dc buss are all connected through the connection bus that corresponds, with the intercommunication of realizing two arbitrary dc buss, be provided with corresponding change over switch on every connection bus respectively. The utility model discloses a matrix power switching unit output of a plurality of modules of charging wantonly connects in parallel, can freely switch over the output of the module of respectively charging to arbitrary charging output interface, realizes the power switching function, has improved charge rate of equipment utilizationand charge efficiency.