In the manufacture of power batteries, the level of burr control of the pole piece directly determines the safety performance of the battery. Industry studies have shown that when the burr > 40μm, the risk of battery short circuit increases by 300%. It is a systematic project for the slitting machine to achieve ± 1μm precision control, and the following is the specific analysis:
1. Infrared positioning device
-- Precise positioning: The infrared positioning device is used to accurately identify the position of the pole piece, and the error range is very small, so as to ensure that the pole piece is in the correct position before slitting, and provide basic guarantee for high-precision slitting.
-- Automatic calibration: It can automatically calibrate the position deviation between the pole piece and the knife die, and quickly adjust it during the placement of the pole piece, so that the pole piece and the knife die are accurately aligned, and effectively avoid the slitting size error caused by the position deviation.
ACEY-SDC-1 Semi-automatic die-cutting machine is an equipment used for die-cutting positive and negative plates of lithium battery laminates. The equipment uses a pressurized cylinder to punch single-piece or coiled pole pieces, and can provide various shapes of knife dies according to customer requirements to realize the forming and die-cutting of battery pole pieces of different sizes.
2. Four-pillar structure
-- Stable support: The four-pillar structure provides stable support for the equipment, ensures that the tool die always remains stable during the upward and downward movement, reduces the slitting size deviation caused by the shaking or shaking of the equipment, and ensures the slitting accuracy.
-- High-precision guidance: The guide pillar is precision machined with high straightness and low friction coefficient, so that the movement trajectory of the tool die is precise and controllable, so as to achieve accurate slitting size control.
3. Gas-Hydraulic Booster Cylinder Drive
-- Precise Pressure Control: Gas-Hydraulic Booster Cylinder Drive can accurately adjust the stamping force and stamping speed, adjust the appropriate stamping parameters according to different electrode materials and thicknesses, ensure the stability and consistency of the slitting process, and help to achieve high-precision slitting.
-- Constant pressure output: In the slitting process, the constant punching force can be maintained to avoid the deformation of the pole piece or the uneven wear of the tool due to pressure fluctuations, which will affect the slitting accuracy.
4. Knife Mold and Mold Design
-- High-precision Die Manufacturing: The die is manufactured by high-precision machining technology, with high dimensional accuracy and shape accuracy, sharp and wear-resistant, which can ensure the accuracy of slitting size and maintain stable slitting quality during long-term use.
-- Customized knife molds: Provide various shapes of knife molds according to customer requirements to meet the slitting needs of battery pole pieces of different sizes, and at the same time, improve the slitting accuracy and efficiency through the optimized design of the knife molds.
5. Safety protection and operation convenience
-- Safety protection light curtain: The equipment is equipped with a safety protection light curtain at the inlet of the equipment, and if there is a manual or foreign object entering by mistake during operation, the equipment will immediately stop stamping, so as to avoid slitting errors and equipment damage caused by accidental interference, and ensure the safety of operators.
-- Convenient operation and adjustment: The equipment is simple to operate, easy to use, and convenient to quickly change the knife die and adjust the slitting parameters, which can complete the slitting and switching of different specifications of pole pieces in a short time, and ensure the consistency of slitting accuracy.
6. Other factors
-- Raw material quality: The selection of high-quality electrode piece raw materials with uniform thickness, flat surface and no defects helps to improve slitting accuracy. If there are quality problems in the raw material, such as uneven thickness and uneven surface, it can lead to slitting dimensional deviation and increased tool wear.
-- Equipment maintenance and maintenance: Regularly maintain and maintain the equipment, including lubrication, cleaning, checking the wear of parts, etc., to ensure that the equipment is always in good operating condition to maintain high-precision slitting performance.
In the manufacture of power batteries, the level of burr control of the pole piece directly determines the safety performance of the battery. Industry studies have shown that when the burr > 40μm, the risk of battery short circuit increases by 300%. It is a systematic project for the slitting machine to achieve ± 1μm precision control, and the following is the specific analysis:
Acey Intelligent is a high-tech enterprise. Our R&D team specializes in researching and manufacturing high-end equipment for lithium-ion batteries. Our business covers semi-automatic & fully automatic assembly machines for cylindrical, prismatic, and pouch battery packs; battery cell charge discharge tester and battery pack test system; lab-scale fabrication machines for coin cells, cylindrical cells, and pouch cells; battery environmental safety testing equipment; battery materials; and supercapacitor production equipment, etc.