Patent ID: 7755323

Claim:
A portable power supply module, comprising: a shell body, the shell body having: a locker compartment including a locking member disposed within; a battery room having: at least one set of conductive contact plates which are connected to a circuit board; at least one battery to supply electrical power through the conductive contact plates; and a connection line with a first end connecting to the circuit board and a second end connected with an output connector extended outside the shell body; and a pulling compartment formed in the shell body for storage of the connection line, a winding mechanism being disposed within at the pulling compartment, to which the connection line is slidably fastened; wherein the winding mechanism further comprises a joint member having an opening and a holding post, and the connection line passes through the opening and winds around the holding post for slidably securing to the winding mechanism; wherein when the output connector is pulled, the winding mechanism slides along the pulling compartment to enable the connection line to be fully extended to outside of the shell body, and when the connection line is not in use, the winding mechanism pulls the connection line to fully retract the connection line into the pulling compartment.