Electric Vehicle Thermal Management Fluids Performance Testing

Presented by guest speakers Dr. Chrystian Ochoa & Dr. Sohelia Shabaniverki from RheoSense


Heat transfer fluids are a key factor in the thermal management of electric vehicle battery packs, with two crucial properties to consider: thermal conductivity and viscosity. 

We are pleased to welcome Dr. Chrystian Ochoa and Dr. Sohelia Shabaniverki from RheoSense to discuss how viscosity measurements can be used to evaluate the performance of lithium-ion battery solvents and electrolytes. Viscosity and dielectric constant are among the most important physical properties of an electrolyte, having a direct impact on ion mobility, conductivity, and battery performance for a wide range of temperatures experienced. For battery applications, relatively high dielectric constant solvents, like ethylene carbonate (EC), are typically combined with low viscosity solvents, like dimethyl carbonate (DMC) and ethyl methyl carbonate (EMC) to achieve an electrolyte with desired viscosity, dielectric constant, and higher conductivity.

In this webinar, the thermal conductivity and temperature-dependent shear viscosity of multiple solvent mixtures of EC, DMC, and EMC will be explored. Additionally, the effect of solvent concentration and lithium perchlorate (LiClO4) concentration  on the shear viscosity of battery electrolytes will be explored. 

Measuring thermal conductivity in liquids - ASTM D7984 sensor MTPS

C-Therm’s Modified Transient Plane Source (MTPS) sensor with the liquid cell attachment, able to measure small volumes of liquids or powders

This webinar will feature C-Therm’s Modified Transient Plane Source (MTPS) sensor, equipped with a liquid cell, in order to achieve thermal conductivity measurements of small volumes.

The RheoSense VROC intium one plus, the leading automated high-throughput viscometer

Likewise, the RheoSense VROC® intium one plus will be featured. It offers the ability to perform different types of measurements with volume as little as 26 µL, and the VROC intium one plus’ ability to automate shear rate and temperature sweeps.


This webinar aired on August 25, 2022 @ 3:00PM GMT-4.

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