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High-specific-power thermal battery cell and preparation method thereof

A single battery, high specific power technology, applied in the direction of primary battery electrodes, primary battery use/maintenance, battery pack components, etc., can solve the problem of large battery thickness, low high specific power characteristics of thermal batteries, lower battery specific power and Material utilization rate and other issues, to achieve the effect of low equipment cost, low internal resistance, and good high-current discharge characteristics

Active Publication Date: 2020-08-21
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cathode material is mainly FeS 2 、NiCl 2 、CoS 2 , the composite sheet is pressed by the positive electrode and the electrolyte, the thickness is greater than 0.8mm; the negative electrode material is LiB and LiSi; the heating sheet is Fe and KClO 4 The mixture is pressed, and the thickness of the single battery is relatively large, usually more than 2mm, resulting in low thermal battery high specific characteristics, which reduces the specific power and material utilization of the battery

Method used

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  • High-specific-power thermal battery cell and preparation method thereof

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Experimental program
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Embodiment 1

[0028] Embodiment 1: A method for preparing a high specific power thermal battery single cell, comprising the following steps:

[0029] 1) Cleaning and deoxidation of materials: prepare foamed copper, aluminum foil and nickel foil, put them in 0.1mol / L hydrochloric acid to clean for 2 minutes, and put them in a vacuum drying oven to dry after cleaning; the foamed copper has an area of ​​18.08cm 2 Disc shape, its thickness is 1mm, the hole diameter is 0.3mm, and the porosity is 85%;

[0030] 2) Preparation of Cu-CuO-V 2 o 5 Cathode material: NH 4 VO 3 Put it in water at 50°C and configure it as NH 4 VO 3 Saturated solution; put in the copper foam prepared in step 1), then heat up to 90°C and keep for 120min; take out the copper foam and put it in a 60°C oven for calcination for 8h, then transfer it to a tube furnace at 600°C for calcination for 4h, and finally heat it under 10MPa The pressure is pressed down to a thickness of 0.18mm;

[0031] 3) Preparation of boron nitr...

Embodiment 2

[0035] Embodiment 2: A preparation method of a high specific power thermal battery unit cell, comprising the following steps:

[0036] 1) Cleaning and deoxidation of materials: Prepare foamed copper, aluminum foil and nickel foil, put them into 0.3mol / L hydrochloric acid to clean for 1min, and put them in a vacuum drying oven to dry after cleaning; the area of ​​foamed copper is 18.08cm 2 Disc shape with a thickness of 2mm, a pore diameter of 0.5mm, and a porosity of 90%;

[0037] 2) Preparation of Cu-CuO-V 2 o 5 Cathode material: NH 4 VO 3 Put in water at 70°C and configure NH 4 VO 3 Saturated solution; put in the copper foam prepared in step 1), then heat up to 90°C and keep for 60 minutes; take out the foam copper and put it in an oven at 100°C for calcination for 18 hours, then transfer it to a tube furnace at 600°C for calcination for 4 hours, and finally heat it at 30MPa Thinned to a thickness of 0.2mm under a certain pressure;

[0038] 3) Preparation of boron nit...

Embodiment 3

[0041] Embodiment 3: The preparation method of high specific power thermal battery unitary battery, comprises the following steps:

[0042] 1) Cleaning and deoxidation of materials: prepare foamed copper, aluminum foil and nickel foil, put them in 0.1mol / L hydrochloric acid to clean for 2 minutes, and put them in a vacuum drying oven to dry after cleaning; the foamed copper has an area of ​​18.08cm 2 Disc-shaped, with a thickness of 0.5mm, a pore diameter of 0.1mm, and a porosity of 82%;

[0043] 2) Preparation of Cu-CuO-V 2 o 5 Cathode material: NH 4 VO 3 Put in water at 60°C and configure NH 4 VO 3 Saturated solution; put in the copper foam prepared in step 1), then heat up to 90°C and keep for 120min; take out the foamed copper and put it in an oven at 100°C for calcination for 2h, then transfer it to a tube furnace at 600°C for calcination for 2h, and finally heat it at 10MPa Thinned to a thickness of 0.15mm under a certain pressure;

[0044] 3) Preparation of boron...

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Abstract

The invention discloses a high-specific-power thermal battery cell and a preparation method thereof in the technical field of thermal batteries. The high-specific-power thermal battery cell is formedby sequentially stacking Cu-CuO-V2O5, a boron nitride fiber composite diaphragm, a LiB alloy sheet and an Al-Ni micron film heating sheet according to a certain sequence. The thickness of Cu-CuO-V2O5ranges from 0.05 mm to 0.3 mm, the thickness of the boron nitride fiber composite diaphragm ranges from 0.1 mm to 0.3 mm, the thickness of the LiB alloy sheet ranges from 0.1 mm to 0.2 mm, and the thickness of the Al-Ni micron film ranges from 5 layers to 50 layers. According to the invention, the problems that the thickness of the conventional thermal battery cell is large and further the high specific characteristic of the thermal battery is low can be solved. The high-specific-power thermal battery cell can meet the requirements of high specific power and high utilization rate, has the advantages of good electrochemical performance, high stability, formability, small thickness, low internal resistance, small large-current density voltage drop, strong severe environment resistance, highsafety and the like, has an appropriate heating temperature range, and can be well suitable for being matched with the use environment of the thermal battery.

Description

technical field [0001] The invention belongs to the technical field of thermal batteries, and in particular relates to a high specific power thermal battery unit cell 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 a wide range of military applications. In addition, thermal batteries have also received attention in civilian applications. , fire alarm power supply, underground high temperature prospecting power supply research reports. [0003] With the continuous development and renewal of military equipment, the requirements for thermal battery performance are gett...

Claims

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Application Information

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IPC IPC(8): H01M2/14H01M2/16H01M4/06H01M4/08H01M6/36H01M6/50H01M50/403H01M50/431H01M50/44H01M50/446
CPCH01M4/06H01M4/08H01M6/5038H01M6/36H01M50/431H01M50/44H01M50/403H01M50/449
Inventor 王明灿冉岭唐军张祖逸潘志鹏王京亮赵洪楷张小洪
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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