Extensible offline UPS power supply

Abstract

The invention discloses an extensible offline UPS power supply, which comprises a power supply body, wherein a primary power supply is arranged inside the power supply body, an extension power supplyis arranged at the bottom part of the primary power supply, a primary input electric wire and a primary output electric wire are arranged on the rear side of the primary power supply, the rear side ofthe extension power supply is provided with a secondary input electric wire and a secondary output electric wire, a single chip microcomputer is arranged on the top part of the primary power supply,an input end of the single chip microcomputer is provided with a coulombmeter and a circuit acquisition unit, an output end of the single chip microcomputer is provided with an alarm unit and a circuit control module, and a connecting end of the single chip microcomputer is provided with a data processing module and an information acquisition module. The information acquisition module logs into aState Grid platform via a network and acquires a power outage notification from the State Grid platform, the circuit control module controls the primary power source and the extension power supply tosupply power to loads in power outage timely, so as to avoid the delay time of switching power-on circuits, the single chip microcomputer further transmits information to the alarm unit, and the alarmunit can transmit alarm information to a mobile phone and a computer, so that the staff can back up quickly.

Description

technical field [0001] The invention relates to the field of off-line UPS power supply, in particular to an expandable off-line UPS power supply. Background technique [0002] The offline UPS is usually in the charging state of the battery, and the inverter switches to the working state urgently during a power failure, converting the DC power provided by the battery into a stable AC output, so the offline UPS is also called a backup UPS. However, this kind of UPS has a switching time problem, so it is not suitable for use in places where critical power supply cannot be interrupted. In addition, when in use, the capacitance of the backup UPS is fixed. When the connected load becomes larger, the power provided is not enough, resulting in shorter backup time, and the UPS needs to be replaced, which increases the cost. [0003] Therefore, it is necessary to invent an expandable off-line UPS power supply to solve the above problems. Contents of the invention [0004] The purp...

AI Technical Summary

Problems solved by technology

However, this kind of UPS has a switching time problem, so it is not suitable for use in places where critical power supply cannot be interrupted

In addition, when in use, the capacity of the backup UPS is fixed. When the connected load becomes larger, the power provided is not enough, resulting in shorter backup time, and the UPS needs to be replaced, which increases the cost.

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