Building intelligent emergency power supply system

Abstract

The invention relates to a building intelligent emergency power supply system which comprises an emergency power supply and a generator, one end of the emergency power supply is connected with the generator, the other end of the emergency power supply is connected to electric equipment through an emergency power supply line, and the system further comprises a power supply controller. The emergency power supply line comprises a bus and a plurality of branch lines. The output end of the emergency power supply is connected to the bus through the power supply controller, and the bus is connected to each electric device through each branch line; and the power supply controller comprises a power supply adapter and a relay, the input end of the power supply adapter is connected to an external power supply line of the building, the output end of the power supply adapter is connected with a coil of the relay, a normally-closed contact of the relay is connected to the output end of the emergency power supply, and a common contact is connected to the bus. Compared with the prior art, the power supply controller is designed at the output end of the emergency power supply to directly cut off the output of the emergency power supply, the situation that the emergency power supply is always in a frequent trickle charge and discharge state due to an overlong power supply-on circuit is avoided, and the service life can be prolonged when the emergency power supply is a lithium battery.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a building intelligent emergency power supply system. Background technique [0002] The electrical system is an important system of modern buildings. Since electric energy is a very important intermediate energy source, the stability and reliability of the electrical system is the basic condition for the normal operation of buildings. [0003] The power of the building mainly depends on the external supply, but the external supply is sometimes interrupted due to some unexpected reasons. The interruption of the power supply may cause some important equipment to fail or be damaged. Therefore, the general building will design an emergency power supply system. [0004] The emergency power supply system is mainly an emergency power supply and a generator, which transmit the electric energy of the emergency power supply to various electrical equipment through the line. In the existing...

AI Technical Summary

Problems solved by technology

In the existing technology, the emergency power supply is directly connected to the power supply network, and the power supply source is selected by the terminal electrical equipment. In this way, the output terminal of the emergency power supply is always in the conduction state, and it will enter frequent short-term trickle charging. In the discharge state, there is nothing wrong with using lead-acid batteries as emergency power supplies too much. However, more and more buildings use lithium batteries as emergency power supplies. This frequent trickle charge and discharge will accelerate the aging and failure of emergency power supplies.

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