Energy saving type uninterrupted power source

Abstract

The invention provides a power saving-typed uninterrupted electrical source supplier, and the supplier comprises a transformer, a automatic voltage regulator (AVR), a charging and energy changing circuit, a normal mode judging unit and an electrical switch; wherein, the transformer comprises a primary side and a secondary side, the primary side is connected with AC electrical source; the AC input terminal of the AVR is connected with the secondary side of the transformer; the charging and energy changing circuit is connected with the secondary side of the transformer and charges the accumulator; the normal model judgment unit is connected with the AC electrical source and the accumulator, so as to examine the power supply state of the AC electrical source and the electric quantity of the accumulator and judge whether the present state is in the working state of normal mode; and the electronic switch is connected with the electrical source loop of the transformer and the AC electrical source in series, the control terminal of the electronic switch is connected with the output terminal of the normal mode judging unit, and the switching terminal is connected with the load. The electrical source supplier of the invention can avoid that load obtains working electrical source under the normal mode by the transformer and can reduce the power of electrical source consumed by the transformer.

Description

technical field [0001] The invention relates to a power supply, in particular to a power-saving uninterruptible power supply with low power consumption. Background technique [0002] Please refer to FIG. 3. FIG. 3 is a functional block diagram of an existing uninterruptible power supply. In the figure, it mainly includes: a transformer 60, which includes: [0003] A primary side 61 and a secondary side 62, the primary side 61 is connected to an AC power source; an electronic voltage stabilizer (Automatic Voltage Regulator, AVR) 70, its AC input terminal is connected to the secondary side 62 of the transformer 60, to obtain Inducting the AC power supply, and outputting it to the load 71 after stabilizing it; and [0004] A charging and changing circuit (Charger and Inverter) 80, connected to the secondary side 62 of the transformer 60, to obtain the charging power and convert it into a charging current to charge the storage battery 81, or convert the power of the storage bat...

AI Technical Summary

Problems solved by technology

Because the power consumption of the transformer 60 itself is large, and it is used for supplying the electronic voltage stabilizer 70 and the charging and energy conversion circuit 80, its volume is also quite large, so if in the aforementioned working mode, only power is supplied to the electronic voltage stabilizer 70, so the overall efficiency of the transformer 60 will consume about 50% of the power, which is quite power consuming

[0006] And because the UPS is mainly used as an emergency power supply for the load when the AC power is interrupted, but the AC power interruption time is still shorter than the normal AC power supply time, so the above-mentioned UPS does consume quite a lot in the long run The power supply power needs to be further improved

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