Echelon battery energy storage system circuit

The utility model provides an echelon battery energy storage system circuit, is provided with at least two battery packages group, and every group battery package across block connects in parallel, wherein first battery package group is provided with first battery package and second battery package, the anode and the anodal of diode V1 of first battery package are connected, and this diode V1's negative pole and the output positive end of system are connected diode V1's both ends cross -over connection has on -off control module K1's normally open switch, the negative terminal of first batterypackage with the anode of second battery package is connected, the negative terminal of second battery package is connected with the system negative terminal, the anode of second battery package is connected with the output positive end of system after still concatenating on -off control module K2's normally open switch, on -off control module K1, on -off control module K2 and on -off control module K3 control end are co