The application of oil filters in the lithium battery industry mainly includes the following aspects:

1. Production of lithium battery separators: Oil filters are used in wet process lithium battery separator production for white oil reuse systems, helping to restore or improve the cleanliness, moisture content, gas content, acid value, viscosity, flash point, insulation strength, color and other properties of oil products, effectively removing impurities, and ensuring safe operation of equipment.

2. Production of battery materials: Oil filters are used in the production process of battery materials, such as lithium ore for lithium batteries, lithium extraction from salt lakes, positive electrode materials, graphite negative electrodes, PVDF resin materials, etc., for filtration and washing to ensure the purity and quality of the materials.

3. Battery recycling: In the process of battery recycling, the oil filter also plays an important role in filtering and washing recycled materials, ensuring the purity and quality of the recycled materials, and reducing environmental pollution.

4. Wastewater treatment: Oil filters are also used in the wastewater treatment process of lithium battery production, helping to treat the wastewater generated during the production process, reduce environmental pollution, and protect the ecological environment.

The working principle of an oil filter is to filter and purify contaminated oil, restore or improve the properties of the oil, effectively remove impurities from the oil, and ensure the safe operation of oil equipment