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Slow-release heat supply device for heat battery

A technology of heating device and thermal battery, applied in the direction of delayed action cells, etc., can solve the problems of low utilization rate of positive electrode material and heat dissipation, etc.

Active Publication Date: 2018-11-23
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention intends to provide a slow-release heat supply device for a thermal battery to solve the problems in the prior art due to the one-time release of heat after the thermal battery is activated, resulting in a large amount of heat overflow in the initial stage and the utilization of the positive electrode material due to the decomposition of the positive electrode active material due to severe thermal shock. low rate problem

Method used

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  • Slow-release heat supply device for heat battery

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1, the positive electrode material active material is iron disulfide and cobalt disulfide, the mass ratio of the two is 1:1, the heating material is iron powder and potassium perchlorate powder, the mass ratio of the two is 84:16, and the diaphragm material is magnesium oxide and lithium chloride-potassium chloride-lithium bromide eutectic molten salt, the mass ratio of the two is 50:50, the negative electrode material is lithium-boron alloy, the heating material, positive electrode material, and diaphragm material are put into a 74mm diameter mold and paved, Then put lithium-boron alloy sheet, metal current collector, and press molding at one time to form a typical thermal battery single structure, and 47 such single structures are stacked to form the battery stack 5 of the thermal battery. Among them, the mass of the single positive electrode material is 13.5g, the mass of the single diaphragm material is 4.9g, the mass of the single lithium boron alloy is 3...

Embodiment 2

[0025] Embodiment 2, the active material of the positive electrode material is iron disulfide and cobalt disulfide, the mass ratio of the two is 1:1, the heating material is iron powder and potassium perchlorate powder, the mass ratio of the two is 84:16, and the diaphragm material is magnesium oxide and lithium chloride-potassium chloride-lithium bromide eutectic molten salt, the mass ratio of the two is 50:50, the negative electrode material is lithium-boron alloy, the heating material, positive electrode material, and diaphragm material are put into a 74mm diameter mold and paved, Then put lithium-boron alloy sheet, metal current collector, and press molding at one time to form a typical thermal battery single structure, and 47 such single structures are stacked to form the battery stack 5 of the thermal battery. Among them, the mass of the single positive electrode material is 15.5 g, the mass of the single diaphragm material is 5.0 g, the mass of the single lithium boron a...

Embodiment 3

[0026]Embodiment three, the active material of the positive electrode material is cobalt disulfide, the heating material is iron powder and potassium perchlorate powder, the mass ratio of the two is 84:16, and the diaphragm material is magnesium oxide and lithium chloride-potassium chloride-lithium bromide eutectic melting Salt, the mass ratio of the two is 50:50, the negative electrode material is lithium-boron alloy, put the heating material, positive electrode material, and diaphragm material into a 74mm diameter mold and spread it flat, then put lithium-boron alloy sheet, metal current collector, once Press molding to form a typical thermal battery cell structure, and 47 such single structures are stacked to form a battery stack 5 of a thermal battery. Among them, the mass of the single positive electrode material is 19.2g, the mass of the single diaphragm material is 4.8g, the mass of the single lithium boron alloy is 3.0g, and the mass of the single heating material is 11...

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Abstract

The invention discloses a slow-release heat supply device for a heat battery, and belongs to the technical field of heat battery application. The slow-release heat supply device comprises a battery shell, wherein a battery pile is arranged in the battery shell; the outer part of the battery pile is coated with a composite insulation heat insulation layer; the composite insulation heat insulation layer is attached to the battery pile; a spiral winding heat pipe is wound on the outer surface of the composite insulation heat insulation layer; a heating material is filled in the spiral winding heat pipe; sealing tapes are arranged at the two ends of the spiral winding heat pipe; a heat preservation layer is further arranged in the battery shell; and the heat preservation layer is located between the spiral winding heat pipe and the battery shell. By the adoption of the scheme, the heat utilization efficiency can be greatly improved, the thermal shock degree at the moment of activation of the battery pile is reduced, and the device is suitable for a thermal battery which works for a long time.

Description

technical field [0001] The invention belongs to the technical field of thermal battery applications, and in particular relates to a slow-release heat supply device for thermal batteries. Background technique [0002] Thermal battery, also known as heat-activated battery, uses eutectic molten salt as electrolyte, uses electrical activation or mechanical activation to ignite the internal pyrotechnic source, and releases a large amount of heat in a short time to change eutectic molten salt from solid to liquid electrolyte , so that the positive and negative electrodes in contact with the electrolyte react electrochemically and start to supply power. [0003] A thermal battery is a battery that relies on internal heat, and the internal temperature of the battery is above 500°C, which leads to the fact that the thermal battery must have good heat preservation measures to maintain the eutectic for a long time (more than half an hour). Otherwise, once the internal temperature drop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/36
CPCH01M6/36
Inventor 郭灏王建勇陈铤石斌吴启兵李云伟
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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