What is the reason for the burr dust produced by the lithium battery pole piece?
There are three main reasons for the generation of pole piece burr dust: 1. The punching method; 2. The structure of the punching die; 3. The material and processing accuracy of the punching die.
Pole piece burr refers to the stretching and bending of the section base material produced by the punching of the pole piece. The general standard for pole piece burrs in the industry is Vh≤15μm (calculated based on the collector surface); Vk≤15μm (calculated based on the edge of the pole piece).
Pole piece dust refers to the coating particles or substrate debris produced by the punching of the pole piece. The industry has not yet established a standard for the size of dust particles, but there are requirements for the size of the area where the pole piece leaks after the powder drops, L≤4mm (continuous occurrence); H≤0.2mm (cracking or leaking foil).
In the die-cutting and lamination processes, controlling the size of the burrs during punching, reducing the dust generated during punching, and avoiding the generation of burrs during the transfer of pole pieces have become the most important problems facing these two processes.(High speed mold cutting machine)
Yixinfeng J500D-A high-speed hardware die-cutting machine (multi-pole ears), adopts a specially designed slitting mechanism, does not drop powder, has small burrs, and has high precision; non-contact dust removal, reducing secondary dust pollution, and effective To avoid the damage caused by the brush powder to the pole piece; install an independent vacuum device (connecting place, die-cutting place) where dust is easy to be generated, greatly reducing the occurrence of dust pollution.
Pole piece burr refers to the stretching and bending of the section base material produced by the punching of the pole piece. The general standard for pole piece burrs in the industry is Vh≤15μm (calculated based on the collector surface); Vk≤15μm (calculated based on the edge of the pole piece).
Pole piece dust refers to the coating particles or substrate debris produced by the punching of the pole piece. The industry has not yet established a standard for the size of dust particles, but there are requirements for the size of the area where the pole piece leaks after the powder drops, L≤4mm (continuous occurrence); H≤0.2mm (cracking or leaking foil).
In the die-cutting and lamination processes, controlling the size of the burrs during punching, reducing the dust generated during punching, and avoiding the generation of burrs during the transfer of pole pieces have become the most important problems facing these two processes.(High speed mold cutting machine)
Yixinfeng J500D-A high-speed hardware die-cutting machine (multi-pole ears), adopts a specially designed slitting mechanism, does not drop powder, has small burrs, and has high precision; non-contact dust removal, reducing secondary dust pollution, and effective To avoid the damage caused by the brush powder to the pole piece; install an independent vacuum device (connecting place, die-cutting place) where dust is easy to be generated, greatly reducing the occurrence of dust pollution.
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