Patent ID: 9673625
Date: 2017-06-06
CPC Classifications: G06F,H02J,Y02B,Y02E

Claim:
1. An uninterruptible power supply apparatus, comprising: a power supply unit that converts AC power to generate a DC voltage to be supplied to a loading device; a first battery unit that is connected to the power supply unit to receive a DC current therefrom, the first battery unit having a first battery for storing first DC power, and generates, from the first DC power stored in the first battery, a DC voltage to be supplied to the loading device when the supply of the AC power to the loading device is discontinued; a second battery unit that is connected in parallel to the power supply unit, has a second battery for storing second DC power, and generates, from the second DC power stored in the second battery, a DC voltage to be supplied to the loading device in accordance with a load status of the power supply unit; and a controller that controls operation of the power supply unit, the first battery unit and the second battery unit in a correlated manner in accordance with an amount of power required by the loading device.