During the coating process, if the surface densities of the pole pieces are different, one piece will be over-rolled and the other piece will be under-rolled during the rolling process. During the pole piece conveying process, under the same tension control, some living materials may fall off or even break in areas where the roller pressure is insufficient. Breakage not only affects work efficiency, but also causes trouble in subsequent slitting, winding and other processes.
How to effectively measure the surface density of pole pieces?
Dacheng precision X/β-ray surface density measuring instrument is typically used in lithium battery positive and negative electrode coating, lithium battery isolation film coating, and paper surface density measurement.
When used in the lithium battery coating process, the equipment can be placed outside the oven and measure the areal density of the dried pole pieces before winding. It can also be placed after unwinding of the coating machine and in front of the coating head to measure the surface density of the substrate to be coated.
Product Highlights
1. Marble O-frame structure ensures long-term stability and no deformation;
2. Compared with domestic equipment, the maximum scanning speed can be 25m/ min;
3. Radiation shielding effect <1uSv/h;
4. Imported high-precision ionization chamber: measurement accuracy up to ±0.25‰;
5. It can form closed-loop control with the coating machine.
If it is necessary to measure the thickness of the wet coating film due to limited conditions, it is recommended to use Dacheng precision coating laser thickness gauge.
Product highlights:
1. Marble C frame and guide shaft base, no stress, ensuring long-term stability;
2. Equipped with upper and lower lasers Optical path coaxiality adjustment device (this is Dacheng's patent);
3. It has the function of measuring the thickness profile of the edge thinning area (this is Dacheng's unique);
Shenzhen Dacheng Precision Equipment Co., Ltd. was established in 2011. It is a leading domestic new energy equipment manufacturer integrating R&D, manufacturing, sales and service. In 2016, it won the title of "National High-tech Enterprise". The company focuses on online non-destructive testing of the surface density and thickness of lithium battery electrodes. Its main products include beta-ray surface density measuring instruments, X-ray surface density measuring instruments, high-precision laser thickness gauges, etc. Currently, it accounts for more than 60% of the domestic lithium battery pole piece testing market share, and has maintained long-term and in-depth cooperative relationships with first-line lithium battery companies such as ATL and BYD.