A lamination equipment for lithium ion battery processing

Abstract

The invention discloses a lamination equipment for lithium-ion battery processing in the technical field of battery processing, including a workbench, a lamination assembly, a drive box, an adjustment wheel, a feeding mechanism, a storage mechanism and a coiling wheel. The material wheel is discharged intermittently. When the coil wheel is stopped, the feeding mechanism carries out the material loading and patching. When the coil wheel moves, the adjustment wheel moves synchronously. Type laminations, each mechanism cooperates to move; two storage boxes are respectively placed with positive and negative electrodes, when the vacuum suction cup absorbs the pole piece, the pressing motor rotates, driving the pressure wheel to separate from the pole piece, so as to control the movement of the vacuum suction cup After the vacuum suction cup leaves, the pressure roller returns to its original position to press the pole piece; by moving the rack, the corresponding rotating shaft and rotating cylinder can realize the process of stationary, forward rotating, stationary and reverse rotating, and the rotating shaft and rotating The movement time of the barrel is staggered. The Z-shaped laminations are thereby realized through the lamination assembly.

Description

technical field [0001] The invention relates to the technical field of battery processing, in particular to a lamination equipment for lithium ion battery processing. Background technique [0002] Lithium-ion battery is a secondary battery (rechargeable battery), which mainly relies on lithium ions to move between the positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes. When charging, Li+ is deintercalated from the positive electrode and embedded in the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. [0003] The main composition and structure of a lithium-ion battery includes a positive electrode, a separator, a negative electrode, an organic electrolyte, and a battery casing; among them, the active material of the positive electrode is generally lithium manganese oxide or l...

AI Technical Summary

Problems solved by technology

[0005] At present, the lamination of some lithium-ion power batteries is completed by manual lamination and mechanical winding method. Among them, the manual lamination method is that employees alternately stack the positive and negative electrodes in the fixture according to the established requirements for lamination. , because this method needs to touch the pole piece by hand many times during the production process, the pole piece is seriously damaged, and due to the high labor intensity of the employees, the phenomenon of stacking more pole pieces, less stacking, and overlapping occurs from time to time; through When laminating mechanically, Z-type lamination is often used. When laminating, the diaphragm is released by reciprocating the winding mechanism, so that the diaphragm is arranged in a Z shape. At the same time, the feeding mechanism of the positive and negative electrodes also reciprocates accordingly, so that The positive and negative electrodes are divided into two parts for loading, which affects the processing efficiency

And the reciprocating distance of the mechanism depends on the size of the battery. When the battery size is larger, the reciprocating distance is also greater. The moving time will also reduce the stacking efficiency and occupy a larger horizontal space.

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