Pole piece feeding device

Abstract

The invention discloses a pole piece feeding device. The device comprises a material clamping manipulator part and a feeding fixed-length part, wherein the material clamping manipulator part comprises push rods and a first material clamping mechanism for clamping the front part of a pole piece; the feeding fixed-length part comprises a second material clamping mechanism for clamping the middle part of the pole piece and a feeding mechanism for driving the second material clamping mechanism to move back and forth; the first material clamping mechanism is installed at the front ends of the push rods; and the second material clamping mechanism is installed at the rear ends of the push rods. The device can be widely used for conveying and cutting such pole pieces as battery pole pieces and super capacitor pole pieces, can solve the problem that the pole pieces are easy to deform and wrinkle in the conveying process in the prior art, simultaneously avoids feeding fixed-length out of tolerance and left and right offset through fixed-length feeding and rectification control, reduces the size error of the pole piece and obviously improves the quality of the pole piece feeding process.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a pole piece feeding device for delivering lithium ion battery or supercapacitor pole pieces. Background technique [0002] The pole pieces used for lithium-ion power batteries are usually made of thinner aluminum or copper foils. During the process of sending them to the laser cutting station for pole piece cutting, due to the thinness of the pole pieces, it is easy to deform and crack. Wrinkles and other problems, resulting in the flatness of the pole piece after cutting does not meet the requirements and scrapped. [0003] In the prior art, sheet feeding methods such as double-roller type, rear clip type, or upper and lower belt pinch feeding are generally used to convey the sheet material. Although the problem of deformation and wrinkling of the pole piece can be solved to a certain extent, for thinner copper foil or The effect of aluminum foil is poor, and it is still easy to damag...

AI Technical Summary

Problems solved by technology

[0002] The pole pieces used for lithium-ion power batteries are usually made of thinner aluminum or copper foils. During the process of sending them to the laser cutting station for pole piece cutting, due to the thinness of the pole pieces, it is easy to deform and crack. Wrinkles and other problems, resulting in the scrapping of the pole piece after cutting because the flatness does not meet the requirements

[0003] In the prior art, sheet feeding methods such as double-roller type, rear clip type, or upper and lower belt pinch feeding are generally used to convey the sheet material. Although the problem of deformation and wrinkling of the pole piece can be solved to a certain extent, for thinner copper foil or The effect of aluminum foil is poor, and it is still easy to damage the pole piece; in addition, it is difficult to accurately control the length and position of the pole piece in these feeding methods, and it is easy to cause the phenomenon of out-of-tolerance or offset of the fixed length, so it is inevitable to use The size error of the pole piece cut out by laser is relatively large, and the battery manufacturing process has strict requirements on the dimensional consistency between the pole piece and the battery cell, and the pole piece with large size deviation obviously cannot meet this requirement

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