Backup power supply and energy-saving method for the same to operate in cold redundancy mode

Abstract

The invention discloses a backup power supply, comprising a main power line, a main power isolation unit, an auxiliary power line, an auxiliary power isolation unit and a microcontroller unit; the main power produces main power, the main power isolation unit receives and outputs the main power, the auxiliary power line produces auxiliary power, the auxiliary power isolation unit receives and outputs the auxiliary power, the microcontroller unit transmits a cold redundancy signal to the main power line and the auxiliary power line upon the receipt of the cold redundancy signal transmitted by an external system and transmits a first enable signal and a second enable signal respectively to the main power isolation unit and the auxiliary power isolation unit, the main power line and the auxiliary power line down-regulate the voltage levels of the main power supply and auxiliary power supply at the same time according to the cold redundancy signal, the main power isolation unit performs enabling according to the first enable signal, and the auxiliary power isolation unit performs enabling according to the second enable signal. Compared with the prior art, the backup power supply has reduced output power when operating in the cold redundancy mode and has reduced power consumption.

Description

technical field [0001] The invention relates to the technical field of power supplies, and more particularly to a backup power supply and an energy-saving method when it works in a cold redundant mode. Background technique [0002] A traditional power supply device with a power backup mechanism generates a set of main DC power and a set of backup DC power at the same time during operation, and the main DC power and the backup DC power are used for External device power supply. Generally speaking, when the main DC power supply is normally powered, the main DC power supply and the backup DC power supply supply power to the external devices, and when the main DC power supply is abnormal, the backup DC power supply independently supplies power to the external devices. Therefore, even if the main DC power supply is abnormal, the power supply device can still maintain the existing power supply efficiency. [0003] However, when a current power supply device with a power backup m...

AI Technical Summary

Problems solved by technology

[0003] However, when the current power supply device with a power backup mechanism works in the cold redundant (ColdRedundant) mode, the input power consumption is about 10W, which is relatively large.

Images