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Overview

An electrode stacking device is used to manufacture the electrodes of secondary batteries. It cuts electrode materials, which have been pressed with roll press equipment, into specific lengths and alternately stacks the positive electrode, negative electrode and separator in layers.
We provide devices that stack them with high precision and at a high speed.

Features

We enable a high production speed with our handling technologies cultivated in a variety of fields.
We can also make suggestions in accordance with customer requests, including ones on stacking method and size.

High-speed, high-precision stacking

High-speed stacking is enabled by operations synchronized with the servo motor* drive.
The devices come with a function for correcting the electrode position (image processing, XYθ stage).

Prevention of adhesion and mixture of foreign substances and impurities

Position measurement and correction are made based on images, which means that the electrode does not touch the end face after it is positioned. This enables the prevention of damage to the coated object as well as the adhesion and mixture of foreign substances and impurities.

High throughput

The movements for external winding of the separator are independent. This reduces the time during which stacking stops.

Maintainability improvement enabled by the vertical structure of the main units

The structure has made each unit more accessible compared to the conventional planar structure, enabling the reduction of maintenance time.

Replace parts to use the device for different types of products.

The device can be used for batteries of various sizes by replacing the attachment of each unit and changing the control data settings.

*
A servo motor is a motor that is capable of controlling the position and speed automatically. Information about rotating angle and rotating speed is fed back to control the function.

Main Specifications

  • Operating capacity: 0.8 s/layer* at the lowest
  • Sizes of electrodes that have been produced with the devices: Up to A4 size
*
One layer = Negative electrode + Separator + Positive electrode + Separator

Batteries Manufactured Using the Devices

  • Lithium ion batteries
  • Nickel-metal hydride batteries
  • Support