Adjustable battery automatic timing throw-in protector

Abstract

The invention discloses an adjustable automatic-timing in-service and out-of-service protector for an accumulator. Two ends of a normally closed contact of an alternating current relay are connected with signal triggering ends of a hour-timing delay counter; two ends of a coil of the alternating current relay are connected with electric supply detecting ends; two ends of a normally open contact of a 40A relay are connected with signal triggering ends of a minute-timing delay counter; two ends of a normally closed contact of the 40A relay are connected with output line ends of the accumulator; a normally open contact of the hour-timing delay counter, a 12 V power supply, a coil of the 40 A relay and a normally closed contact of a direct current relay are sequentially and annularly connected; a coil of the direct current relay, the normally open contact of the minute-timing delay counter and the 12 V power supply are sequentially and annularly connected. The adjustable automatic-timing in-service and out-of-service protector disclosed by the invention can autonomously set up the accumulator discharge time, and is simple in circuit switching, high in universality of components and parts, and high in reliability of the complete device.

Description

technical field [0001] The invention relates to a protection device for preventing battery deep discharge. Background technique [0002] At present, in UPS (uninterruptible power supply system), EPS (emergency power supply system) and communication power supply system, the protection of the battery is limited to the shutdown of the power host to protect the battery. After detecting the battery voltage and comparing the threshold value, the main unit of the power supply sends out a shutdown command. However, in most practical applications, due to the light load, the battery will be loaded in the low current discharge mode after a power failure. When the main unit of the power supply detects that the battery voltage is low, the battery is already in a deep discharge state. After such incidents occur repeatedly several times, the battery is basically scrapped, which not only affects the user's investment, but also seriously endangers the availability of the system. Contents ...

AI Technical Summary

Problems solved by technology

However, in most practical applications, due to the light load, the battery will be loaded in the low current discharge mode after a power failure. When the main unit of the power supply detects that the battery voltage is low, the battery is already in a deep discharge state. After such incidents occur several times, the battery will basically be scrapped, which not only affects the user's investment, but also seriously endangers the availability of the system.

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