Patent ID: 7714462

Claim:
A composite backup-type power supply system, comprising: N+1 sets of power supply units each having M+P sets of power supply devices, where M being base power supply devices, P being backup power supply devices, each of the power supply units having at least one power balance unit to regulate output power ratio of the M+P sets of power supply devices, each power balance unit receives supplied output power only from a power output of another set of power supply devices through a detection point, and provides a self feedback control to regulate power of the power supply devices, where N≧1, M≧1 and P≧1; N+1 sub-power panels corresponding to the N+1 sets of power supply units to integrate output power of the M+P sets of power supply devices into a single output power; and at least one main power panel connecting to the sub-power panels at said detection point to integrate output power of the N+1 sets of power supply units; the main power panel having a power detection linking line connecting to each of the power supply units so that each of the power supply units connected to the main power panel becomes a small backup-type power supply system in a 1+1 architecture consisting of M+P sets of power supply devices; the N+1 sets of power supply units connected to the main power panel having all the base power supply devices and the backup power supply devices integrated to become a large backup-type power supply system in a 3+1 architecture.