An activation circuit for sequential operation of thermal battery cells

Abstract

The invention provides an activating circuit capable of realizing the sequential working of a single thermal battery. The activating circuit can judge the relation between the output voltage of the single thermal battery in an activated state and a reference voltage via a comparison circuit; and when the output voltage of the single thermal battery is lower than the reference voltage, a comparator outputs a high level signal, and an enabling activation signal output control circuit outputs an activation signal to activate the next single thermal battery. For the output of the single thermal battery, a manner of delayed output circuit is adopted to avoid forming of output oscillation due to heavy load in the establishment stage of the voltage of the thermal battery. For the activation circuit, a manner of reference voltage output control circuit is adopted to avoid advanced activation of the next single thermal battery.

Description

technical field [0001] The invention relates to the application field of thermal batteries, in particular to an activation circuit capable of realizing the sequential operation of multi-stage thermal battery cells. Background technique [0002] As a type of battery with high specific energy and specific power, wide operating temperature range and long storage life, thermal battery is widely used in aerospace field. However, its working principle of relying on the electrolyte to melt into an ion state to achieve discharge results in a short working time of the monomer. At present, the working time of a long-life thermal battery cell generally does not exceed 1 hour, and in order to slow down the heat loss rate, it is necessary to design a special insulation structure and use thermal insulation materials, which increases the volume, weight and design complexity of the single thermal battery. In some applications with a single task life, the task time is greater than 1h, and t...

AI Technical Summary

Problems solved by technology

However, its working principle of relying on the electrolyte to melt into an ion state to achieve discharge results in a short working time of the monomer

At present, the working time of a long-life thermal battery cell generally does not exceed 1 hour, and in order to slow down the heat loss speed, it is necessary to design a special insulation structure and use thermal insulation materials, which increases the volume, weight and design complexity of the single thermal battery.

In some applications with a single task life, the task time is greater than 1h, and the current thermal battery cells cannot meet the requirements

Images