A kind of heating material for thermal battery and preparation method thereof

A technology for heating materials and thermal batteries, applied in the direction of delayed action cells, etc., can solve the problems of fast heat release rate, reduced battery specific energy and working time, low calorific value of heating powder, etc., to achieve smooth heat release, shorten activation time, The effect of long storage time

Active Publication Date: 2021-03-23
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the harsh requirements of thermal batteries for heating materials, only Fe and KClO can be used in engineering applications. 4 Mixture, mainly Fe:KClO 4 Heating powder mixed in a ratio of 82:18 to 84:16, but the above-mentioned heating powder has a low calorific value and a fast heat release rate, which reduces the specific energy and working time of the battery

Method used

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  • A kind of heating material for thermal battery and preparation method thereof
  • A kind of heating material for thermal battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation of heating material for thermal battery comprises the following steps:

[0035] 1) Deoxidation treatment: configure 0.2mol / L hydrochloric acid, and clean the micron sprayed aluminum powder according to the ratio of 1L hydrochloric acid: 1kg micron sprayed aluminum powder, and the cleaning time is 1 min to obtain deoxidized micron sprayed aluminum powder;

[0036] 2) Inert drying: Put the cleaned micron sprayed aluminum powder and potassium perchlorate in an inert gas drying oven at 50°C for 3 hours;

[0037] 3) Powder blending: Mix nano-iron powder, graphite, potassium perchlorate treated in step 2 and deoxidized micron spray aluminum powder according to the following proportions, in which nano-iron powder accounts for 63%, potassium perchlorate accounts for 19%, and graphite accounts for The proportion of deoxidized micron sprayed aluminum powder is 12%, and the whole weighing and mixing process is completed in an inert glove box;

[0038] 4) Mix the mix...

Embodiment 2

[0040] The preparation of the heating material with high calorific value comprises the following steps:

[0041] 1) Deoxidation treatment: configure 0.1mol / L hydrochloric acid, and clean the micron sprayed aluminum powder according to the ratio of 1L hydrochloric acid: 1kg micron sprayed aluminum powder, and the cleaning time is 2 minutes to obtain deoxidized micron sprayed aluminum powder;

[0042] 2) Inert drying: Put the cleaned micron sprayed aluminum powder and potassium perchlorate in an inert gas drying oven at 60°C to dry for 2 hours;

[0043] 3) Powder blending: Mix nano-iron powder, graphite, potassium perchlorate treated in step 2 and deoxidized micron sprayed aluminum powder according to the following proportions, in which nano-iron powder accounts for 70%, potassium perchlorate accounts for 17%, and graphite accounts for The ratio is 3%, micron sprayed aluminum powder accounts for 10%, and the whole weighing and mixing process is completed in an inert glove box; ...

Embodiment 3

[0046] The preparation of the heating material with high calorific value comprises the following steps:

[0047] 1) Deoxidation treatment: configure 0.3mol / L hydrochloric acid, and clean the micron sprayed aluminum powder according to the ratio of 1L hydrochloric acid: 1kg micron sprayed aluminum powder, and the cleaning time is 1 min to obtain deoxidized micron sprayed aluminum powder;

[0048] 2) Inert drying: Put the cleaned micron sprayed aluminum powder and potassium perchlorate in an inert gas drying oven at 40°C for 4 hours;

[0049] 3) Mixing powder: mix nano-iron powder, graphite, potassium perchlorate treated in step 2 and deoxidized micron spray aluminum powder according to the following proportions, in which nano-iron powder accounts for 67%, potassium perchlorate accounts for 17%, and graphite accounts for The ratio is 6%, and the micron spray aluminum powder accounts for 10%. The whole weighing and mixing process is completed in an inert glove box;

[0050] 4) T...

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Abstract

The invention discloses a heating material for a thermal battery in the technical field of thermal batteries, which is prepared from special superfine nano iron powder for the thermal battery, graphite, dried potassium perchlorate and part of deoxidized micron spray aluminum powder, and is prepared by the following steps: uniformly mixing according to a certain proportion, filling into a wide-mouth bottle, sealing, and storing in a dryer for later use. The nano iron powder accounts for 63%-70%, the potassium perchlorate accounts for 16%-20%, the graphite accounts for 3%-6%, and the micron spray aluminum powder subjected to deoxidation treatment accounts for 7%-15%. Graphite and deoxidized micron spray aluminum powder are added, the reaction is carried out step by step, the heat release rate of the thermal battery is reduced, the working time of the thermal battery is prolonged, and the specific energy of the thermal battery is improved.

Description

technical field [0001] The invention belongs to the technical field of thermal batteries, and in particular relates to a heating material for thermal batteries and a preparation method thereof. Background technique [0002] Thermal battery is a heat-activated reserve battery that relies on its own heating system to heat and melt the non-conductive solid-state salt electrolyte into an ionic conductor and enter the working state. Thermal batteries have the characteristics of activation at any angle, fast activation speed, long storage time, and strong ability to withstand environmental mechanical conditions. They have been widely used in missiles, anti-missile missiles, nuclear weapons, various advanced bombs, artillery, mines, etc. In addition, thermal batteries The application in the civilian field has also been paid attention to. There have been research reports on its use as an aircraft emergency power supply, a fire alarm power supply, and an underground high-temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/36
CPCH01M6/36
Inventor 唐军张庆宏冉岭王明灿张祖逸王京亮潘志鹏李云伟赵洪楷
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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