Technique for shortening activation time of thermal batteries

Abstract

The invention discloses a technique for shortening activation time of thermal batteries. An ignition strip on the periphery of a galvanic pile is turned upwards to the lower part of a mesopore asbestos pad; the ignition strip is directly burnt after an electric igniter is detonated; and heating substances in each single battery are ignited through the ignition strip from top to bottom, so that the thermal batteries are activated. According to the technique, traditional activation processes of detonating the electric igniter, igniting a heating plate, burning the ignition strip and finally igniting each single battery from top to bottom are changed into the processes of directly burning the ignition strip after detonating the electric igniter and then igniting each single battery from top to bottom, so that the activation time can be shortened by about 0.1-0.2 second; and the technique is simple in process, does not generate a redundant substance, and is of great significance in improvement of the activation time.

Description

technical field [0001] The invention belongs to the technical field of thermal batteries, and in particular relates to a process for shortening the activation time of thermal batteries. Background technique [0002] The thermal battery is a kind of thermally activated reserve battery that uses the heating system of the battery itself to heat and melt the non-conductive solid-state salt electrolyte into an ionic conductor and enter the working state. The internal electrolyte of the thermal battery is a eutectic melt composed of two or more inorganic salts. At room temperature, the electrolyte is a non-conductive solid; when in use, the electric ignition head inside the battery is ignited by an external current, thereby igniting the heating inside the battery. materials, the internal temperature of the battery rises rapidly, causing the molten salt electrolyte to melt and conduct electricity, activate the battery, and output electricity. The use of solid salt electrolytes is ...

AI Technical Summary

Problems solved by technology

The activation time of the battery is related to the ambient temperature before activation, the load current during activation, the burning rate of the ignition strip, the burning rate of the heating plate, the diameter of the single battery, and the design of the calorific value, but these conditions are generally the same as the use of thermal batteries. The requirements are related to the design scheme and cannot be changed casually, so in order to further shorten the activation time of the battery, other design measures must be taken

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