Patent ID: 8541985

Claim:
A multifunctional portable power bank, comprising: a main body internally defining a chamber, in which a battery is mounted; and a circuit board being arranged in the chamber of the main body and connected to the battery; the circuit board including: a buck converter connected to a first connector and the battery; a booster connected to the battery and a second connector; a first control unit connected to the buck converter, the booster, a changeover switch, and an LED indicator; the first control unit controlling the buck converter to reduce an external power supply supplied thereto to a voltage matching that of a battery power of the battery; and controlling the booster to boost the battery power supplied thereto to a preset voltage; a second control unit connected to the first control unit and a wireless transmission unit; and the second control unit including a connection interface, an Ethernet interface, and a plurality of modules supporting network and file access for controlling network/cloud data transmission and access; an Ethernet connector connected to the Ethernet interface; a regulator connected to the battery and the second control unit; and the battery power being supplied to the second control unit and the wireless transmission unit via the regulator; and a connector unit connected to the connection interface of the second control unit, a flash memory and a third connector; the connector unit including a hub/switch and a controller; the hub/switch being connected to the controller and the third connector, and the controller being connected to the flash memory.