Filling of battery cells with electrolytes

Small dispensing errors cause large variations in battery performance. Hermetic, high-precision dosing pumps are needed for this application. Filling electrolytes into battery cells is a critical step in battery manufacturing. Factors such as electrolyte formulation, pressure and temperature must be considered in the filling process.
Filling of battery cells with electrolytes

Hermetic pump mzr-7265 for electrolyte filling (Image source: HNP Mikrosysteme)

Critical to battery performance and life are the quality of the electrolyte and the accuracy of the filling process. Small dispensing errors cause large variations in performance. High-precision micro annular gear pumps from HNP Mikrosysteme are used for this application. Lithium-based liquid battery electrolytes are crystallizing and hazardous to health, and require the use of hermetic pumps. The magnetic hermetic pump mzr-7265 doses volumes between 4 and 8 ml in 2 seconds with a deviation of less than 1%. The process takes place under vacuum conditions. In addition to low-pulsation and precise dosing, the pump realizes very short cycle times. LOHC-based hydrogen storage is another application field for micro annular gear pumps.

Pumps of the high performance series, mzr-4605 or mzr-7205 are used to deliver LOHC dibenzyltoluene, also known as Marlotherm, perhydro-dibenzyltoluene and benzyltoluene. For example, the pumps deliver dibenzyltoluene with volume flow rates between 1 ml/min and 240 ml/min into a reactor. Here, the medium is charged with hydrogen by means of hydrogenation.

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Sustainable Production Thanks to Efficient Filling Technology: Brewery Velké Popovice Invests in a Turnkey KHS Line

05.12.2023 -

Czech brewery Velké Popovice relies on technology from KHS: at the heart of a new glass line is the Innofill Glass DRS ECO filler. Velké Popovice uses the unfilled beer to cool the vacuum pump and thus save energy. With the installation of the rest of the line’s dry section planned for the start of the coming year, the brewery is thus relying solely on KHS technology – that also includes a number of holistic digital service solutions.

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