Facility for forming battery electrode plate

Abstract

A battery electrode board figuration device, in the running direction (D) of the battery electrode board (10) which core is coated electrode active material, setting a decoiling machine (1), a tension endowing device (3), a four-high roller device (4), a thickness detecting device (5), a tension endowing device (6) and a winder (9) from upstream to downstream. Thus, under the state of pressing figuration to the battery electrode board with wide extent so as to improve the volume density of the electrode active material, to produce battery electrode board with high quality reliably and stably.

Description

technical field [0001] The invention relates to a battery electrode plate forming equipment. Background technique [0002] Patent Document 1 discloses the prior art that, for example, in a battery electrode such as a lithium battery positive electrode, an electrode active material used as an electrode mixture is coated on a core material of a metal foil current collector such as aluminum foil. (LiCoO 2 ) and make it dry, the process of increasing the bulk density of the electrode active material is performed by press molding. In Patent Document 1, a battery electrode plate in which an electrode active material is applied to a core material and dried is press-formed by a two-high mil type rolling device equipped with a pair of upper and lower pressure rolls. . [0003] Patent Document 1: Japanese Unexamined Patent Publication No. 11-3701 [0004] Conventionally, battery electrode plates press-formed by a two-roll rolling press have a problem of narrow width. In recent yea...

AI Technical Summary

Problems solved by technology

[0006] In addition, as described above, increasing the diameter of the press roller corresponding to the wide battery electrode plate will lead to an increase in the size of the device, so it is difficult to implement in practice.

In addition, if the diameter of the press roll is increased, the forming load will also increase as described above, so it will further increase the size of the device, and it will be difficult to apply pressure under high pressure due to bending or flattening of the roll. In addition, there is a problem that productivity and quality decrease due to breakage of battery electrode plates and difficulty in replacing rolls.

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