Winding device for ultrathin metal lithium strip

Abstract

The invention discloses a winding device for an ultrathin metal lithium strip. The device comprises a winding machine and two pairs of pinch rollers, wherein the two pairs of pinch rollers are parallelly arranged; and one pair of pinch rollers is connected with the die orifice of a metal lithium strip extruder, and the other pair of pinch rollers is connected with the winding machine. The two pairs of pinch rollers are arranged in front of the winding machine and used for controlling the tension of the metal lithium strip, and the metal lithium strip can be uniformly stressed during winding and cannot be subjected to overhigh stress during roll changing, so that the ultrathin metal lithium strip can be smoothly wound, and the phenomena that the ultrathin metal lithium strip is subjected to tensile deformation or broken during winding or roll changing are avoided; and in addition, the pinch rollers are water-cooled rollers, and a forced cooling device is arranged between the two pairs of pinch rollers and used for cooling the metal lithium strip which flows out of the die orifice of the metal lithium strip extruder, so that the strength of the cooled metal lithium strip is increased, and the phenomena that the metal lithium strip is subjected to tensile deformation or broken during winding or roll changing are avoided.

Description

technical field [0001] The invention relates to a winding device, in particular to an ultra-thin metal lithium strip winding device. Background technique [0002] At present, the metal lithium strips used in primary lithium batteries are produced by metal lithium extrusion. Generally, metal lithium ingots are processed into lithium strips through a series of treatments such as drying, surface treatment, passivation, and extrusion. Existing metal lithium strip winding device such as figure 1 As shown, the metal lithium strip 6 passes through the fixed guide roller 2, the pressure roller 3 of the tension controller and the fixed guide roller 4 after flowing out from the die opening of the metal lithium strip extruder 1, and finally the metal lithium strip 6 is wound by the winder 5 put away. [0003] However, the nature of the lithium metal strip determines that it is both light and soft, especially in the current industrial applications, the thinness of the lithium metal s...

AI Technical Summary

Problems solved by technology

[0003] However, the nature of the lithium metal strip determines that it is both light and soft, especially in the current industrial applications, the thinness of the lithium metal strip is required to be higher and higher, and the existing lithium metal strip winding device is easy to make the metal The lithium belt 6 is stretched, deformed or broken due to uneven force, especially when the roll is changed, the metal lithium belt 6 is very easy to be stretched, deformed or broken under the action of the pressure roller 3 of the tension controller

[0004] Therefore, it is necessary to explore a new type of metal lithium strip winding device, which can solve the problem that metal lithium strips, especially ultra-thin metal lithium strips, are easy to stretch, deform or break when winding or changing rolls

Images