The Direct Filling Technology (Patent pending DE 10 2022 128 101.9 - Title “Direct fill technology“) uses a volumetric dosing pump, a switch valve to select vacuum, inert gas or rinsing solvent and a filling valve that directly connects the dosing pump via a short filling stud tightly to the filling hole of the hard case cell. No pre-chamber is used. Alternatively the filling valve can connect the switch valve supply to the cell.

For

· Check of proper cell adaption and cell integrity

· Swiftly drawing of deep vacuum inside the cell

· Fast and highly accurate injection of the desired electrolyte volume

· Pressurising of the injected electrolyte for optimum soaking

· Safe detection of completion of soaking

· Clean and drop-free de-adaption of the cell

· Cleaning of the filling stud to avoid any salt residues

· Rinsing and cleaning of the electrolyte lines and components

Advantages over previous technologies:

· Fast filling - up to 4 times faster

· Precise filling - up to 5 times more accurate

· Safe filling - less reject rate

· Clean filling - makes cell washing an unnecessary expense