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Preparation method and application of a composite heating sheet for thermal battery

A composite heating and thermal battery technology, applied in the use/maintenance of primary batteries, primary batteries, battery electrodes, etc., can solve problems such as the working time of the thermal battery does not meet the use requirements, the working time of the thermal battery is shortened, and the temperature of the thermal battery increases. , to achieve the effect of prolonging the heat release time, preventing over-burning and avoiding thermal shock

Active Publication Date: 2020-12-04
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, the working time of hot battery is difficult to exceed 1h, which is mainly due to the widely used FeS 2 、CoS 2 And other electrode materials, self-pyrolysis is relatively serious during the working process
The occurrence of pyrolysis reaction is mainly because for a long-term thermal battery, too much heating sheet will cause the internal temperature of the thermal battery to rise, exceeding the pyrolysis temperature of the positive electrode material, resulting in pyrolysis of the positive electrode material, resulting in thermal battery failure. The working time is shortened; and the reduction of the number of heating sheets will lead to insufficient internal heat in the thermoelectric period, and the working time of the thermal battery does not meet the use requirements

Method used

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  • Preparation method and application of a composite heating sheet for thermal battery
  • Preparation method and application of a composite heating sheet for thermal battery

Examples

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Effect test

Embodiment 1

[0030] A method for preparing a composite heating sheet for a thermal battery, the composite heating sheet is made of a heating material and a heat storage material, the outer surface of the composite heating sheet is a heating material, and the inside thereof is a heat storage material or a heat storage material and The heating materials are arranged in phases, and the preparation method thereof comprises the following steps:

[0031] (1) Preparation of heating materials: take Fe powder and KClO in proportion 4 powder, stir well and add sodium salt, mix well and sieve to obtain heating material; the Fe powder and KClO 4 The mass ratio of powder=80:10; The sodium salt is NaCl or Na 2 SO 4 , and the quality of sodium salt is 1% of the heating material;

[0032] (2) Preparation of heat storage material: Weigh LiOH, LiCl and KF powder according to the proportion, add MgO powder after stirring evenly, and sieve after mixing uniformly to obtain heat storage material; the mass ra...

Embodiment 2

[0036] A method for preparing a composite heating sheet for a thermal battery, the composite heating sheet is made of a heating material and a heat storage material, the outer surface of the composite heating sheet is a heating material, and the inside thereof is a heat storage material or a heat storage material and The heating materials are arranged in phases, and the preparation method thereof comprises the following steps:

[0037] (1) Preparation of heating materials: take Fe powder and KClO in proportion 4 powder, stir well and add sodium salt, mix well and sieve to obtain heating material; the Fe powder and KClO 4 The mass ratio of powder=90:20; The sodium salt is NaCl or Na 2 SO 4 , and the quality of sodium salt is 10% of the heating material;

[0038] (2) Prepare heat storage material: take LiOH, LiCl and KF powder according to the proportion, add MgO powder after stirring evenly, sieve after mixing uniformly, make heat storage material; The mass ratio of describe...

Embodiment 3

[0042] A method for preparing a composite heating sheet for a thermal battery, the composite heating sheet is made of a heating material and a heat storage material, the outer surface of the composite heating sheet is a heating material, and the inside thereof is a heat storage material or a heat storage material and The heating materials are arranged in phases, and the preparation method thereof comprises the following steps:

[0043] (1) Preparation of heating materials: take Fe powder and KClO in proportion4 powder, stir well and add sodium salt, mix well and sieve to obtain heating material; the Fe powder and KClO 4 The mass ratio of powder=82:13; The sodium salt is NaCl or Na 2 SO 4 , and the quality of sodium salt is 3% of the heating material;

[0044] (2) Prepare heat storage material: take LiOH, LiCl and KF powder according to the proportion, add MgO powder after stirring evenly, sieve after mixing uniformly, make heat storage material; the mass ratio of described L...

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Abstract

The invention discloses a preparation method of a composite heating sheet for a thermal battery, the composite heating sheet is prepared from a heating material and a heat storage material, and the preparation method comprises the following steps: weighing Fe powder and KClO4 powder in proportion, uniformly stirring, adding a sodium salt, uniformly mixing, and sieving to obtain the heating material; the preparation method comprises the following steps: weighing LiOH, LiCl and KF powder in proportion, uniformly stirring, adding MgO powder, uniformly mixing, and sieving to obtain a heat storagematerial; and sequentially putting the heating material and the heat storage material into a mold, applying pressure to mold the powder, and demolding to obtain the composite heating sheet. Accordingto the composite heating sheet of the thermal battery, the sodium salt is added into the heating material, and active substances in the heating material can be effectively dispersed in the presence ofthe sodium salt, so that overburning of the heating material is prevented, the heat release time of the heating material is prolonged, and the thermal battery can work for a long time.

Description

technical field [0001] The invention belongs to the technical field of thermal battery electrode materials, and in particular relates to a preparation method and application of a composite heating sheet for a thermal battery. Background technique [0002] Thermal battery is a heat-activated reserve battery. When stored at room temperature, the electrolyte is a non-conductive solid. When in use, an electric ignition head or a firing pin mechanism is used to ignite the heating agent inside, so that the electrolyte melts into an ion conductor and is activated. A reserve battery, the storage time is theoretically unlimited, and the actual measurable value is more than 17 years. Due to its small internal resistance, wide operating temperature range, long storage time, quick and reliable activation, and no maintenance, it has developed into an ideal power supply for modern weapons. [0003] With the rapid development of the defense industry, the application field has higher and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/50H01M6/36
CPCH01M6/36H01M6/5088H01M2004/021H01M2004/028
Inventor 孟剑赵洪楷盛德卫段其智潘志鹏王京亮李云伟
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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