Overtemperature warning device for storage battery and overtemperature warning method therefor

Abstract

The invention relates to the technical field of the protection of a storage battery, and discloses an overtemperature warning device for the storage battery and an overtemperature warning method for the storage battery. The warning device comprises a temperature detecting and controlling circuit, an executing mechanism and an acousto-optic warning circuit, wherein the temperature detecting and controlling circuit is formed by the means that a temperature detecting circuit is connected with a temperature controlling circuit, and the temperature controlling circuit is connected with the executing mechanism and the acousto-optic warning circuit. The overtemperature warning method comprises the following steps of: magnifying an electric signal of an electric contact temperature gauge Q by a transistor V1 when the temperature of the storage battery is increased or exceeds a set temperature value 40 DEG C, triggering a thyristor VT, driving a relay K to work, and triggering the acousto-optic warning circuit and the executing mechanism to work. The invention can overcome the faults that the inner part of the storage battery is heated, a clapboard is damaged, and an inner circuit board falls off since the charging time is overlong; and the accident potential can be eliminated in a budding status, the safe and reliable running of a direct-current source of a power system transformer substation can be guaranteed, and the device and method provided by the invention have the characteristics of being wide in applicable scope, simple in circuit, economical and applicable.

Description

technical field [0001] The invention relates to the technical field of storage battery protection, in particular to an over-temperature alarm for battery packs and a backup method for electric power, communications, emergency command centers, important enterprises and institutions, and power substations. Background technique [0002] At present, most of the substations in my country are unattended substations, and most of the substations use battery cells as the DC system. The higher the substation level, the higher the requirements for the battery standard of the DC system, and the battery temperature is required to be controlled at 40°C. [0003] Because the battery charger is greatly affected by the external temperature when charging, the room temperature is too high or too low, the resistance of the electronic components in the charger changes, the charging current will drift, and the charging current will always be in the state of equal charging; when the battery is full...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the background technology that the failure of the battery pack affects the safe operation of the system power grid, the present invention provides a battery pack over-temperature alarm and its method

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