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Winding system and using method thereof

A technology of winding shaft and inert environment, which is applied in coating, electrode forming, electrode manufacturing, etc., and can solve problems such as potential safety hazards and battery performance degradation

Pending Publication Date: 2020-10-27
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of dendrite growth and volume expansion in the process of charging and discharging when metal lithium, sodium and zinc are used as electrode materials of metal batteries, the performance of the battery is reduced and even the safety hazard is caused. The present invention provides a winding system and its Method of use for the preparation of active metal composite flakes with high capacity, high rate and cycle stability

Method used

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  • Winding system and using method thereof
  • Winding system and using method thereof
  • Winding system and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Such as figure 1As shown, this embodiment provides a winding system, including an inert environment unit 6 and a winding unit accommodated in the inert environment unit 6, the inert environment unit 6 includes a main body bin 61, an inlet and outlet bin 62 , a vacuum pump 63 and an inert gas storage tank 64, the winding unit is arranged in the main body bin 61, a first bin door 66 is provided between the main body bin 61 and the inlet and outlet bin 62, and the inlet and outlet bin 62 is connected to the bin The side opposite to the door 66 is provided with a second bin door 65, the vacuum pump 63 is respectively connected with the main body bin 61 and the inlet and outlet bin 62 through pipelines, and the inert gas storage tank 64 is communicated with the main body bin 61 through pipelines, so The main chamber 61 is provided with a heating container 4 for heating the active metal to a molten state; the winding unit includes a winding shaft 3, a rotating shaft 31, and a...

Embodiment 2

[0089] The difference between this embodiment and Embodiment 1 is that this embodiment also includes a cooling unit 7 accommodated in the main body compartment 61 of the inert environment unit 6, and the cooling unit 7 includes a cooling device 71, such as figure 2 shown.

[0090] A copper strip is selected as the strip-shaped composite component 1, metal sodium is selected as the active metal 12, and argon gas is used as the inert gas. Wherein the copper strip has a thickness of 5-20 microns and a width of 80-500 microns.

[0091] 1) Fill the inert environment unit 6 with an inert gas (argon), place the copper strip on the rotating shaft 31, and pull the copper strip through the traction shafts 51, 52, 53 to be fixed on the winding shaft 3 in sequence (drawing the copper strip The band enters the inside of the heating container 4 through the traction shaft 51, then leaves the heating container 4 through traction and contacts the traction shaft 52, and continues to traction ...

Embodiment 3

[0096] The difference between this embodiment and Embodiment 1 is that this embodiment also includes a cooling unit 7 and a pinch roller 8 accommodated in the main body compartment 61 of the inert environment unit 6, and the cooling unit 7 includes a cooling device 71, Such as image 3 shown.

[0097] The aluminum strip is selected as the strip composite component 1, the metal zinc is used as the active metal 12, and the argon gas is used as the inert gas. The aluminum strip has a thickness of 3-20 microns and a width of 80-500 microns.

[0098] 1) Fill the inert environment unit 6 with inert gas (argon), place the aluminum strip on the rotating shaft 31, and pull the aluminum strip through the traction shafts 51, 52, 53 and the pressing roller 8 in turn, and fix it on the winding shaft On the shaft 3 (the traction aluminum strip enters the inside of the heating container 4 through the traction shaft 51, and then leaves the heating container 4 through traction to contact the...

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Abstract

The invention discloses a winding system and a using method thereof. The winding system comprises an inert environment unit and a winding unit arranged in the inert environment unit; the inert environment unit comprises a main body bin, a feeding-discharging bin and an inert gas storage tank, the winding unit is arranged in the main body bin, the inert gas storage tank communicates with the main body bin, and the main body bin is internally provided with a heating container; the winding unit comprises a winding shaft, a rotating shaft and pulling shafts, wherein the winding shaft, the rotatingshaft and the pulling shafts are fixed to a winding substrate; active metal is melted to a liquid state through the heating container, then, composite components are pulled and lifted to pass the interior of the liquid active metal to be cooled through the winding unit, thus, a metal composite material is formed, and after winding, an active metal composite sheet with a winding structure is obtained. When the metal composite sheet which is high in active metal content and is obtained through the winding system is applied to an electrode material for a metal battery, the advantage of high capacity of a metal lithium or sodium electrode can be kept, moreover, dendritic growth can be inhibited, and metal volume expansion can be controlled.

Description

technical field [0001] The invention belongs to the field of mechanical processing equipment, and in particular relates to a winding system and a using method thereof. Background technique [0002] In recent years, with the rapid development of mobile devices, vehicle electrification and grid storage, and big data information transmission, the demand for high energy density batteries has grown steadily. In the existing energy storage system, lithium-ion batteries, which are the most widely used and have the highest energy density, have been difficult to meet the needs of applications. A metal battery system is a battery system that uses a metal with a relatively negative electrode potential, such as lithium, sodium, zinc, magnesium, aluminum, mercury, and iron, as the negative electrode. Among them, metal lithium has the highest specific capacity (3860mAh / g) and the lowest electrochemical potential (-3.04V), and metal lithium battery is expected to become the next generatio...

Claims

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Application Information

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IPC IPC(8): C23C2/06C23C2/04C23C2/40C23C2/02C23C2/26H01M4/04H01M4/40
CPCC23C2/02C23C2/04C23C2/06C23C2/26C23C2/40H01M4/0433H01M4/40H01M4/405Y02E60/10
Inventor 杨树斌
Owner BEIHANG UNIV