Battery cell hot pressing equipment

Abstract

The invention discloses a hot-pressing equipment for battery cells, which includes a support mechanism, a rotating shaft, a mounting block, a first pressing roller, a second pressing roller, a pressure detection device and a positioning device. The rotating shaft and the supporting mechanism The installation block is movably connected with the rotation shaft, so that the installation block can rotate around the rotation shaft; the first pressure roller is connected with the installation block, so that the installation block can rotate around the When the shaft rotates, the first pressure roller can rotate together with the mounting block; the second pressure roller is connected with the support mechanism and is used to cooperate with the first pressure roller to crush the battery cells The pressure detection device is fixed on the support mechanism and connected with the installation block, and is used to measure the pressure applied by the first pressure roller to the second pressure roller; the positioning device and the support mechanism connected with the installation block and used to limit the position of the installation block. The invention can improve the qualification rate of products.

Description

technical field [0001] The invention relates to the technical field of battery cell manufacturing equipment, in particular to a battery cell hot-pressing equipment. Background technique [0002] The lithium-ion battery cell includes positive pole pieces, separators and negative pole pieces that are wound or superimposed on each other, wherein the separator is spaced between adjacent positive pole pieces and negative pole pieces to function as electronic barrier and ion conduction. The role of the pass, while the separator is also used to maintain the electrolyte. When manufacturing lithium-ion batteries, a packaging film is wrapped on the outside of the battery core, and then the electrolyte is injected into it, and it can be evacuated and sealed. [0003] Among them, the preparation process of the pole piece of the battery cell usually includes pulping, film coating, drying, rolling and cutting. Although the manufacturing process of different manufacturers or different bat...

AI Technical Summary

Problems solved by technology

Existing hot-pressing equipment for battery cells usually includes a pair of pressing rollers. During operation, the pole piece is rolled by two pressure rollers in a heated state. Although this structure can improve the compaction density of the pole piece, it will be The extended pressure roller is prone to deformation, which leads to the problem of inconsistent compaction density, which ultimately affects the thickness consistency of the battery cell, and the qualified rate of the product is low

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