Impact of deviation correction accuracy on battery performance The impact...
Production process 4-Cutting and slitting
Uninterruptible Power Supply (UPS) is an indispensable device in modern power guarantee system. The key components of UPS include batteries, inverters, transformers and their distribution systems. In the production process of UPS, cutting and slitter are essential steps, which have a direct impact on the quality and performance of the final product. This article will introduce the UPS production process in detail.
main content
Purpose of cutting and slitting
The main purpose of slicing and slitter is to precisely cut the slate-coated, dried and rolled electrode sheet according to the design structure and specifications of the battery. This step is essential to ensure battery performance and quality.
Technical requirements for cutting and slitting:
In the process of cutting, the quality of the cutting edge of the electrode has an important influence on the performance and quality of the battery. The details include:
Burrs and impurities can cause short circuit in the battery, causing self-discharge and even thermal runaway;
The dimensional accuracy is poor, it is impossible to ensure that the negative electrode is completely wrapped in the positive electrode, or the diaphragm completely isolates the positive and negative electrode pieces, causing battery safety problems;
Material thermal damage, coating off, etc., resulting in material loss of activity, can not play a role;
The unevenness of the cutting edge causes the unevenness of the electrode charging and discharging process.
Cutting and slitting process
At present, there are three main cutting processes for lithium-ion batteries:
disk cutting, die punching and laser cutting.
Using the principle of rolling shear, the upper and lower disc knife is used to cut the pole sheet with thickness of 0.01~0.1mm.
Die punching is divided into wood die punching and metal die punching. Metal die punching uses punch and lower die to cut the pole piece. Coating particles are peeled off due to stress during punching, forming punching pieces with high section quality.
Laser cutting has high production efficiency and stability, suitable for lithium-ion battery electrode cutting, the basic principle is to use high power density laser beam to heat the electrode, melt or vaporize the material, form a hole, complete the cutting.
Quality control of cutting and slitting
In the laser cutting process, it is necessary to optimize the process parameters according to the characteristics of the living material and metal foil to ensure that the pole sheet is completely cut, forming a good cutting quality, avoiding problems such as coating shedding and metal chip residue, preventing battery performance degradation and safety quality problems.
Cutting and slitting equipment
The pole cutting equipment needs to have high precision and stability to ensure that the size and quality of the pole plate meet the requirements. These devices include disc cutting machines, die punching machines and laser cutting machines.
CONCLUSION
In summary, cutting and slitting is a key link in the UPS battery production process, which directly affects the quality and safety of the battery. By precisely controlling the cutting and slitting process, the quality of the battery electrode can be ensured, thus producing a battery with reliable performance.
UPS BATTERY SERIES
UPS (Uninterruptible Power Supply) batteries are an important component of power supply systems designed to provide stable power support for electronic devices.
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