DC backup power start controller

Abstract

The present invention discloses a backup direct current power supply starting controller and aims to provide an apparatus that is simple in principle and high in implementability, and can ensure that a backup power supply can supply power in time when a main power supply is disconnected due to a fault, the main power supply with the fault can be disconnected and the backup power supply can be automatically connected. The controller is implemented through the following technical scheme: a main power supply control circuit is electrically connected between electric equipment and the main power supply, wherein the main power supply control circuit consists of a toggle switch K1, a main power supply relay KA2 and a parallel relay KA1 connected to an access line in parallel, and the toggle switch K1, the main power supply relay KA2 and the parallel relay KA1 are sequentially connected in series through a fuse box FU1; a fuse box FU2 in a backup power supply control circuit sequentially connects a backup power supply toggle switch K1, a backup power supply toggle switch K2, a backup power supply relay KA1 and a first backup power supply relay KA2 connected in parallel between output lines of the backup power supply in series; and the output end of the first backup power supply relay KA2 is electrically connected to both ends of the parallel relay KA1 of the main power supply through a second backup power supply relay KA2.

Description

technical field [0001] The invention belongs to the technical field of power supply, and mainly relates to a device that automatically connects to a backup power supply to provide stable and reliable working voltage for electrical equipment without interruption when the main power supply fails and cuts off the power supply, and can disconnect the failed main power supply. Especially the starter controller that automatically connects to the backup power supply. Background technique [0002] In modern production and life, electrical equipment must work within a certain voltage range. If the working voltage of the electrical equipment is abnormal, it will not only damage the electrical equipment itself, but may also cause problems such as safety and economy. The occurrence of health problems will cause irreparable losses. Many important electrical equipment are not allowed to cut off the power during operation. Once the power is cut off, it will cause huge economic losses. Thi...

AI Technical Summary

Problems solved by technology

The controller is controlled by a single-chip microcomputer. It detects the voltage and frequency status of the common and standby two-way power supply through the signal acquisition and processing circuit, and switches the two-way power supply through the relay circuit. The disadvantages are that the circuit is complicated, the cost is high, and the processing speed Slow, low precision, poor real-time performance

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