Patent ID: 8423806

Claim:
A power management system, comprising: a power management subsystem comprising two power modules and a pass-through module, each said power module comprising a plurality of power supplies, said pass-through module electrically coupled between two output terminals of said two power modules for providing a uni-directional or bi-directional conducting path in response to a control signal; and a power system control unit coupled to said pass-through module for providing said control signal to said pass-through module and controlling said pass-through module to be turned on and turned off, and controlling power delivery directions of said pass-through module so as to condition an output of any said power module to enhance efficiency of any said power module by said pass-through module, and enhance power efficiency of said power management subsystem; wherein said pass-through module comprises at least one pass-through unit, and said pass-through unit is retractably installed in said corresponding power module to replace with said at least one power supply.