Film rolling machine with horizontally parallel ceramic rollers for pole pieces of lithium batteries

Abstract

The invention discloses a film rolling machine with horizontally parallel ceramic rollers for of pole pieces of lithium batteries. The film rolling machine mainly comprises a speed reducing motor, a coupler, a driving gear, a driven gear, the ceramic rollers, a two-tank heater, a driving gear bearing base, a driven gear bearing base, a mechanism frame, a left forward inclined wedge, a left inverse inclined wedge, a right forward inclined wedge, a right inverse inclined wedge and an oil cylinder. As the rollers are horizontally parallel to each other, the film rolling machine can solve the problem that the pressing compactness degree of coatings on the double faces of each pole piece is inconsistent since the gravity of a coating Qm in contact with an upper roller of the pole piece is not equal to the gravity of a coating Qm in contact with a lower roller of the pole piece caused by the factor that the rollers float within a bearing clearance as the conventional rollers are arranged up and down. The rollers do not need to be finely rolled frequently as adopting ceramic jackets, so that a great amount of maintenance costs can be saved.

Description

technical field [0001] The invention relates to a film rolling machine for manufacturing lithium ion battery pole pieces, in particular to a horizontally parallel lithium battery pole piece film rolling machine with ceramic rolls. Background technique [0002] In the lithium-ion battery manufacturing process, the film rolling of the pole piece is a very critical process. Usually, the thickness of the positive and negative material coatings is 200um before rolling, and about 100um after rolling. The thickness of the pole piece after rolling is required to be consistent. , Density consistency, poor thickness consistency, that is, the formation of multi-layer accumulated tension is inconsistent, poor density consistency, that is, the formation of electrolyte distribution differences, directly related to the performance of lithium-ion batteries, refer to Figure 11 , the existing rolling machine for manufacturing lithium-ion battery pole pieces is arranged and installed by two hu...

AI Technical Summary

Problems solved by technology

[0006] The present invention is to provide a ceramic roll whose surface hardness is significantly higher than that of the Cr2 series high-alloy cold roll steel roll, and aims at the gap between the upper roll and the lower roll caused by the upper and lower installation structure of the existing film rolling machine rolls Floating problem within the range of bearing clearance, improve the upper and lower installation structure of the existing roll, the roll adopts ceramic roll with ceramic sleeve and steel shaft structure, horizontally parallel lithium battery pole piece film rolling machine

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