Slot die for manufacturing rechargeable battery electrode

Abstract

A slot die for manufacturing a rechargeable battery electrode is provided. The slot die includes: a first block; a second block facing the first block; and a gasket member positioned between the first block and the second block, in which the first block and the second block are coupled to each other to form a slot for discharging an active material slurry, wherein the first block includes a chamber for accommodating the active material slurry and forms a first surface in a width direction and a discharge direction of the slot, the second block faces the first surface to form a second surface in a width direction and a discharge direction of the slot, the gasket member includes end portions facing each other at respective ends of the first surface and the second surface and formed in a height direction of the slot, the end portions include a width adjusting portion, and the width adjustment portion protrudes in the width direction from a first reference point of the gasket member to a second reference point at a first adjustment width, is inclined from the second reference point to a third reference point at a first angle with respect to the discharge direction, and is formed in the discharge direction at a first adjustment length.

Description

technical field [0001] The present invention relates to a slot die for manufacturing electrodes for rechargeable batteries. More particularly, the present invention relates to a slot die for manufacturing a rechargeable battery electrode including a spacer member for controlling a discharge rate of an active material slurry coated on a substrate. Background technique [0002] Unlike primary batteries, rechargeable batteries are repeatedly charged and discharged. Small rechargeable batteries are used in portable small electronic devices, such as mobile phones, laptop computers or video cameras. Large-capacity and high-density rechargeable batteries are used to store motor driving power or energy for hybrid and electric vehicles. [0003] A rechargeable battery includes an electrode assembly for charging and discharging electric current, a case for accommodating the electrode assembly and an electrolytic solution, a cap plate coupled to an opening of the case, and a cap for ...

AI Technical Summary

Problems solved by technology

[0006] Generally, with respect to the width of the slit set between the respective ends of the spacer member, when the distribution of the discharge rate of the active material slurry becomes non-uniform, a gap occurs at the edges of the respective ends of the base in the width direction. The flying phenomenon of the active material slurry, and the coating thickness of the active material slurry becomes uneven in the width direction of the substrate

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