Manufacturing method for heating material uniformly heating used for thermal battery and application thereof

A technology for heating materials and thermal batteries, which is applied in the use/maintenance of primary batteries, primary batteries, electrochemical generators, etc. It can solve the problems of excessive decomposition of active substances in positive electrode materials and low utilization of positive electrode materials, and achieve initial redox The temperature value is advanced, the specific surface energy is increased, and the effect of wide application

Active Publication Date: 2019-03-29
航天江南集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention discloses a preparation method of a heating material with uniform heat generation for a thermal battery, so as to solve the problem that the heat of the existing heating material is completely released in a short period of time after being ignited, causing severe damage to the positive electrode material. The problem of low utilization of positive electrode materials caused by excessive decomposition of active materials due to thermal shock

Method used

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  • Manufacturing method for heating material uniformly heating used for thermal battery and application thereof
  • Manufacturing method for heating material uniformly heating used for thermal battery and application thereof
  • Manufacturing method for heating material uniformly heating used for thermal battery and application thereof

Examples

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Embodiment 1

[0017] see Figure 1 to Figure 4 , the preparation method of the uniform heating material provided in this embodiment includes: pouring analytically pure grade potassium perchlorate into a high-energy ball mill cup, adding appropriate water to make a slurry, putting a certain number of zirconia balls, and setting the rotation speed to be greater than 3000r / min for high-energy ball milling, the high-energy ball milling time is 30s~2min, then stop running, cool for more than 10min, and then run the high-energy ball mill, repeat this step, the high-energy ball mill runs for a total of 4~6h. Afterwards, put the ball-milled powder into a freeze dryer, run the freeze dryer to remove excess water by sublimation, and then use a pulverizer to pulverize and pass through a 400-mesh sieve to obtain ultrafine potassium perchlorate. Pour the active iron powder into the inert atmosphere glove box, add a certain mass ratio of inorganic potassium salt, and then mix the two by physical or chemi...

Embodiment 2

[0027]The preparation method of the uniform heating material for thermal batteries provided in this embodiment includes: pouring analytically pure grade potassium perchlorate into a high-energy ball mill cup, adding appropriate water to prepare a slurry, and putting a certain number of zirconia balls, Set the rotation speed to be greater than 3000r / min for high-energy ball milling. The high-energy ball milling time is 30s~2min. After that, stop the operation, cool for more than 10min, and then run the high-energy ball mill. Repeat this step. Put it into a freeze dryer, run the freeze dryer to use sublimation to remove excess water, and then use a pulverizer to crush it. After passing through a 400-mesh sieve, ultra-fine potassium perchlorate is obtained, and the active iron powder is poured into the inert atmosphere glove box , add a certain mass ratio of inorganic potassium salt, and then use physical or chemical methods to mix the two to form potassium-containing iron powder,...

Embodiment 3

[0037] The preparation method of the uniform heating material for thermal batteries provided in this embodiment includes: pouring analytically pure grade potassium perchlorate into a high-energy ball mill cup, adding appropriate water to prepare a slurry, and putting a certain number of zirconia balls, Set the rotation speed to be greater than 3000r / min for high-energy ball milling. The high-energy ball milling time is 30s~2min. After that, stop the operation, cool for more than 10min, and then run the high-energy ball mill. Repeat this step. Put it into a freeze dryer, run the freeze dryer to use sublimation to remove excess water, and then use a pulverizer to crush it. After passing through a 400-mesh sieve, ultra-fine potassium perchlorate is obtained, and the active iron powder is poured into the inert atmosphere glove box , add a certain mass ratio of inorganic potassium salt, and then use physical or chemical methods to mix the two to form potassium-containing iron powder...

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Abstract

The invention relates to a manufacturing method for a heating material uniformly heating used for a thermal battery and application thereof. The method comprises: pouring analytical pure grade potassium perchlorate into a high-energy ball-milling cup, adding appropriate water to prepare a slurry, placing a zirconia ball, performing high-energy ball milling, and then putting ball-milled powders into a freeze dryer to dehydrate, and then crushing using a pulverizer to obtain ultrafine potassium perchlorate, pouring active iron powders into an inert atmosphere glove box, adding an inorganic potassium salt, and then mixing the active iron powders and the inorganic potassium salt using a physical or chemical method, to form potassium-containing iron powders; finally, mixing the ultrafine potassium perchlorate and the potassium-containing iron powders according to a certain ratio. The method is beneficial to widening a heating region of a heating material, to release heat more uniformly, thereby weakening thermal shock amount on a positive electrode material of a thermal battery in an initial working phase of the material, and improving utilization rate of the positive electrode materialof the battery.

Description

Technical field: [0001] The invention relates to a preparation method and application of a heating material with uniform heat generation for a thermal battery. Background technique: [0002] Thermal batteries are used in many military fields, mainly as power sources for seekers and steering gears in missiles and weaponry. They provide power to the radar, electronic guidance system, and electric motors. In weapons applications, thermal batteries provide power for fuzes and weapon safety systems. Some torpedoes and missiles rely on thermal batteries to power them. Some of these large thermal batteries were selected to provide power for emergency backup of hydraulic systems in military aircraft. And some small thermal batteries provide power sources for life-saving equipment such as aircraft ejection chairs. The electrolyte of the thermal battery is a non-conductive eutectic molten salt at room temperature. After the battery is activated, it changes from a solid state to a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/50H01M6/36
CPCH01M6/36H01M6/5088
Inventor 郭灏
Owner 航天江南集团有限公司
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