Method for processing metallic lithium belt

A processing method and metal lithium technology, applied in metal processing equipment, metal extrusion, metal extrusion control equipment, etc., can solve the problem of small extrusion capacity, affecting the performance and service life of lithium batteries, and unstable winding tension control And other issues

Active Publication Date: 2010-10-13
CHINA ENERGY LITHIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current production method of metal lithium strip is limited by conditions such as small extrusion capacity, low mold precision, low and unstable production speed, unstable winding tension control, and large mold loss. The range is narrow, and the thickness of the lithium strip is difficult to ensure uniformity. Due to its large thickness tolerance, it directly affects the performance and service life of the lithium battery

Method used

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  • Method for processing metallic lithium belt
  • Method for processing metallic lithium belt

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Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0015] The raw material lithium ingot is weighed in an environment with a humidity below 1%, the lithium ingot 6 is added to the extrusion cylinder 5, the coiling disc 14 is fixed on the winding machine, and the middle position of the coiling disc 14 is pasted on both sides The length of the double-sided adhesive tape is 2 mm shorter than the width of the product, and the position of the winder is initially adjusted so that the center of the coiling disc 14 is aligned with the die outlet.

[0016] The extrusion rod 1 of the forming extruder first enters the rubber sealing ring 2 before the formal extrusion work; the rubber sealing ring 2 is fixed in the vacuum sealing ring 3; the vacuum sealing ring 3 and the extrusion cylinder 5 are sealed and fastened with bolts ; Open the air exhaust hole 4 for vacuuming on the vacuum sealing ring 3; first vacuumize, and extract the air in the extrusion cylinder cavity.

[0017] Start the vacuum pump and the low pressure pump, start the low...

specific Embodiment 2

[0018] The raw material lithium ingot is weighed in an environment with a humidity below 1%, the lithium ingot 6 is added to the extrusion cylinder 5, the coiling disc 14 is fixed on the winding machine, and the double The length of the double-sided tape is 2 mm shorter than the width of the product, and the position of the winder is preliminarily adjusted so that the center of the winding disc 14 is aligned with the die outlet.

[0019] The extrusion rod 1 of the forming extruder first enters the rubber sealing ring 2 before the formal extrusion work; the rubber sealing ring 2 is fixed in the vacuum sealing ring 3; the vacuum sealing ring 3 and the extrusion cylinder 5 are sealed and fastened with bolts ; Open the air exhaust hole 4 for vacuuming on the vacuum sealing ring 3; first vacuumize, and extract the air in the extrusion cylinder cavity.

[0020] Start the vacuum pump and the low-pressure pump, start the low-pressure feed until the sealing copper sleeve is attached to...

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Abstract

The invention provides a method for a novel lithium ribbon by vacuum extrusion forming. The lithium ribbon produced by the method has high dimensional precision and bright surface, and a lithium battery made of the lithium ribbon produced by the method has uniform and stable performance.

Description

technical field [0001] The invention relates to a method for processing metal lithium strips. Background technique [0002] The current production methods of metal lithium strips are limited by conditions such as small extrusion capacity, low die precision, low and unstable production speed, unstable winding tension control, and large die loss. The range is narrow, and the thickness of the lithium strip is difficult to ensure uniformity. Due to its large thickness tolerance, it directly affects the performance and service life of the lithium battery. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a novel vacuum extrusion lithium strip processing method in order to overcome the above-mentioned deficiencies in the prior art. [0004] The technical scheme of the metal lithium strip mentioned in the present invention is: a lithium strip processing method, the metal lithium strip forming process is carried out in a dry environment, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/02B21C29/00B21C31/00B21C47/02B21C47/34
Inventor 陈强牟瀚波贾振勇
Owner CHINA ENERGY LITHIUM
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