Backup power supply for electronic equipment and its control method

Abstract

The invention relates to a backup power supply for electronic equipment, characterized in that the backup power supply includes a backup power output terminal and an auxiliary power input terminal for electronic equipment, and an arrangement is made between the backup power output terminal and the input terminal of the auxiliary power supply for electronic equipment. There is a semiconductor switching device, and the semiconductor switching device is also connected with a micro-power consumption controller. The micro-power consumption microcontroller is powered by a backup power supply, and uses its communication interface to receive control commands from the main system of electronic equipment. The microcontroller stores the received control command in its on-chip non-volatile memory, and controls the semiconductor switching device to be turned on or off according to the control command, thereby controlling the access or disconnection of the backup power supply. The technical solution can effectively maintain and prolong the service life of the standby power supply, and protect the safety of electronic instruments and equipment.

Description

technical field [0001] The invention relates to a backup power supply, in particular to a backup power supply for electronic equipment and a control method thereof, and belongs to the technical field of backup power supply control. Background technique [0002] The backup power supply is one of the essential components of many electronic instruments and equipment. Its function is that when the main power supply of the equipment fails, the backup power supply can protect the contents of the volatile memory, record possible failure data, prompt the type of failure, and maintain the equipment. The normal operation of some or even all systems. Backup power is usually implemented with a battery or a combination of a battery and a voltage regulator. [0003] Early backup and main power supplies were automatically switched between two low-cost diodes, but the voltage drop across the diodes reduced the voltage supplied to the device and shortened battery life. With the improvement...

AI Technical Summary

Problems solved by technology

[0004] There are two problems in the existing backup power supply control solutions for electronic instruments and equipment. On the one hand, most of the solutions cause the backup power supply to be always connected, and the storage, transportation, installation and commissioning stages before the final use of electronic instruments and equipment are always connected. They are all in a charged state, which not only affects the life of the backup power supply, but also threatens the safety of electronic instruments and equipment; The power supply control of some parts (such as LCD backlight, etc.) is powerless, and the application range is limited to a certain extent

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