Method for preparing thin single cell thermal battery in laminated mode based on molten salt thermal spraying technology and thin single cell thermal battery

A thermal battery and thermal spraying technology, which is applied in the manufacturing of primary battery equipment, primary battery, spray manufacturing, etc., can solve the problems of difficult forming of thermal battery pole pieces, inability to miniaturize, etc., so as to avoid the increase of battery internal resistance and improve stability. The effect of sex and simple craftsmanship

Active Publication Date: 2017-11-24
西科微纳(重庆)新能源技术研究院有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing problems, an object of the present invention is to provide a method for laminating and preparing thin single thermal batteries based on molten salt thermal spraying technology, so as to solve the problem that the pole pieces of thermal batteries in the prior art are difficult to form and cannot be miniaturized. question

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  • Method for preparing thin single cell thermal battery in laminated mode based on molten salt thermal spraying technology and thin single cell thermal battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The method for laminating and preparing a thin single thermal battery based on molten salt thermal spraying technology in this embodiment includes the following steps:

[0035] Preparation of hot battery positive electrode molten salt: FeS with mass percentage 2 85%, KCl-LiCl binary electrolyte 14%, 1% Li 2 O peak cutting agent, mixed evenly, stirred and heated in a vacuum spraying equipment furnace to 400°C to melt to form a positive electrode molten salt.

[0036] Preparation of hot battery electrolyte molten salt: Mix KCl-LiCl binary electrolyte 50% and 50% MgO evenly in mass percentage, stir and heat in a vacuum spraying equipment furnace to 400°C to melt to form electrolyte molten salt. MgO is a binder, which can prevent the electrolyte molten salt from overflowing and cause a short circuit, and make the hot battery electrolyte more uniform.

[0037] Preparation of molten salt for negative electrode of thermal battery: Mix Li-Si alloy Li-Si 80% by mass and KCl-L...

Embodiment 2

[0041] The method for laminating and preparing a thin single thermal battery based on molten salt thermal spraying technology in this embodiment includes the following steps:

[0042] Preparation of hot battery cathode molten salt: the mass percentage of CoS 2 88%, LiCl-LiBr-LiF ternary all-lithium electrolyte 10%, 2% Li 2 O peak cutting agent, mixed evenly, stirred and heated in a vacuum spraying equipment furnace to 480°C to melt to form a positive electrode molten salt.

[0043] Preparation of hot battery electrolyte molten salt: Mix LiCl-LiBr-LiF ternary all-lithium electrolyte 60% and 40% MgO evenly in mass percentage, stir and heat in a vacuum spraying equipment furnace to 480°C to melt to form electrolyte molten salt.

[0044] Preparation of hot battery negative electrode molten salt: Mix 80% of lithium aluminum alloy Li-Al and 20% of LiCl-LiBr-LiF ternary all-lithium electrolyte evenly, stir and heat in a vacuum spraying equipment furnace to 480°C to melt, A negativ...

Embodiment 3

[0048] The method for laminating and preparing a thin single thermal battery based on molten salt thermal spraying technology in this embodiment includes the following steps:

[0049] Preparation of hot battery positive electrode molten salt: FeCoS with mass percentage 2 88%, LiCl-LiBr-KBr ternary low-melting point electrolyte 10%, 2% CaSi peak clipping agent, mixed evenly, stirred and heated in a vacuum spraying equipment furnace to 380°C to melt to form a positive electrode molten salt.

[0050] Preparation of hot battery electrolyte molten salt: Mix LiCl-LiBr-KBr ternary low-melting point electrolyte 40% and 60% MgO evenly in mass percentage, stir and heat in a vacuum spraying equipment furnace to 380°C to melt to form electrolyte molten salt.

[0051] Preparation of the negative electrode of the thermal battery: punching a 0.2 mm thick lithium-boron alloy into a disc to obtain a lithium-boron alloy negative electrode sheet. Lithium-boron alloy negative electrodes can als...

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Abstract

The invention discloses a method for preparing a thin single cell thermal battery in a laminated mode based on a molten salt thermal spraying technology and the thin single cell thermal battery, belonging to the field of battery preparation technology. The method comprises the following steps: (1) preparing positive molten salt, and spraying the positive molten salt on a collector plate to form a positive electrode layer; (2) preparing electrolyte molten salt, and spraying the electrolyte molten salt on the positive electrode layer to form an electrolyte layer; (3) preparing negative molten salt, and spraying the negative molten salt on the electrolyte layer to form a negative electrode layer; or, setting a lithium-boron alloy negative plate on the electrolyte layer; and (4) setting the collector plate on the negative electrode layer or the lithium-boron alloy negative plate, and performing compression moulding to obtain the thin single cell thermal battery. The preparation method disclosed by the invention is simple, and can be used for improving the discharge capacity and stability of the battery.

Description

technical field [0001] The invention relates to the technical field of battery preparation, in particular to a method for laminating and preparing a thin single thermal battery based on molten salt thermal spraying technology and the thin single thermal battery. Background technique [0002] Thermal batteries are the most widely used reserve batteries in military equipment. At present, domestic thermal battery electrodes are all prepared by powder pressing process. It is difficult to form large-diameter combined pole pieces, and combined pole pieces cannot be made very thin, resulting in the inability to miniaturize thermal batteries. Therefore, the manufacturing technology of thin single thermal battery that is convenient for industrialized implementation is a major problem that the defense industry needs to solve urgently. Contents of the invention [0003] In order to solve the existing problems, an object of the present invention is to provide a method for laminating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/00H01M6/36H01M4/04
CPCH01M4/0404H01M4/0419H01M6/005H01M6/36
Inventor 任洪波
Owner 西科微纳(重庆)新能源技术研究院有限公司
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