There are certain insolubles in the lithium salt that are insoluble in organic solvents, and a large amount of insolubles in the finished electrolyte will seriously affect the life of the battery. With the continuous development of electrolyte, the variety of electrolyte has increased from the original several to hundreds. The accuracy of the filter is an important parameter to control the quality of lithium batteries. It can be seen that the filter plays an important role in the production process of lithium batteries. The role of.

SP Solution:

1. Filtration of electrolyte production

A filter should be installed after the solvent circulation tank to purify and remove solid particles such as SS to avoid clogging the pipeline; dehydration to ensure the quality of the solvent; the solvent and lithium salt are fully mixed in the configuration reactor and then passed through the filter. Fine filtration, removal of small particle size impurities and further purification, to prepare electrolyte.

2. Filtration of electrolyte waste

Electrolyte wastewater contains heavy metal ions, acid and alkali liquids, etc. The liquid is black and has a certain viscosity. Direct discharge will pollute the water body. After filtration and separation, it can be discharged or reused after reaching the national discharge standard, and the electrolyte left by the filtration is recovered. Due to the complex composition of the water body, the water quality characteristics of the filter element should be fully considered when selecting the filter element.

3. Filtration of dust particles

The production and processing technology of lithium-ion batteries is complicated. From the perspective of dust removal, they include stirring, rolling, sheeting, winding, welding, packaging and other processes. Lithium-ion batteries will generate dust or smoke during these processes. If not in time Disposal will affect product quality, damage processing equipment, and even cause safety accidents. Therefore, it is necessary to clean up the dust part, so as not to affect the uniformity of the pole pieces in the later winding process, and the particles are too large or even easy to pierce the diaphragm, or break down the diaphragm during charging and discharging, causing internal short-circuit and heating of the lithium-ion battery. Problems such as high temperature and even explosion.

SP Advantages:

ØHigh filtration precision, can filter particles <1um.

ØThe filter element is acid and alkali resistant, strong resistance and long service life.

ØIt has a wide range of applications and can adapt to different working conditions.