Battery Industry

Precision in Battery Production: Why Coriolis Mass Flow Meters Are Essential

Electromobility is developing rapidly, and with it, the demands on the production of high-performance batteries are increasing. In particular, filling battery cells with electrolytes is one of the critical process steps where precision determines the quality and performance of the battery. Electrolyte filling is a complex process that places the highest demands on accuracy and reproducibility. Each battery cell must be filled with precisely the right amount of electrolyte to ensure the full performance and safety of the battery. Even minor deviations can negatively affect capacity, lifespan, and cell safety.

Electrolyte Fluids in Battery Production

The electrolyte fluids used in battery cell manufacturing often consist of lithium salts dissolved in organic solvents such as ethylene carbonate, dimethyl carbonate, or ethyl methyl carbonate. These substances are chemically aggressive, flammable, and impose high demands on dosing technology. Additionally, electrolytes are often viscous and sensitive to contamination or air entry, further complicating the filling process.

Challenges in Electrolyte Filling

One of the biggest challenges is handling the high viscosity and chemical aggressiveness of many electrolyte fluids. Moreover, dosing often has to be carried out under vacuum conditions to ensure that the electrolyte penetrates the porous structure of the electrodes for complete wetting. In industrial mass production, the filling process must often take place in extremely short cycle times. Thus, measurement technology must be not only precise but also fast and reliable.

Structure of an Electrolyte Filling System

A typical electrolyte filling system consists of a storage tank for the electrolyte fluid, a vacuum chamber where the battery cells are positioned, a dosing pump, and a flow measurement system. The electrolyte is injected into the cells under controlled conditions while the pressure is simultaneously adjusted to ensure optimal penetration of the liquid into the cell structure. Continuous monitoring of the dosing amount is indispensable to ensure that each cell receives exactly the prescribed amount of electrolyte.

Advantages of Rheonik Coriolis Mass Flow Meters

Coriolis mass flow meters from Rheonik have established themselves as a reliable solution in this demanding environment. Their high measurement accuracy and insensitivity to changing process conditions enable precise and reproducible dosing, even for the smallest electrolyte volumes. Particularly advantageous are the compact dimensions and the variety of connection options of Rheonik flow meters. This allows them to be easily integrated into existing filling systems, even when installation space is limited.

Thus, Rheonik Coriolis mass flow meters make a significant contribution to quality assurance and process optimization in battery production. Continuous monitoring and documentation of the dosing process ensure maximum process reliability and reduce the risk of defective battery cells. This enables manufacturers to increase the efficiency of their production and meet the high-quality requirements of the automotive industry.

Get Flow Measured – with Coriolis Mass Flow Meters from Rheonik.