Lubrizol’s EVOGEN TM1000 Series EV battery thermal management fluids are formulated and tested to provide superior performance features in EV immersion cooling applications. The result is faster charging, better battery performance and improved safety.
| EVOGEN™ TM1070 | EVOGEN™ TM1100 | EVOGEN™ TM1150 | |
|---|---|---|---|
| Kinematic Viscosity (cSt) @ 40°C | 1.3 | 1.9 | 4.6 |
| Kinematic Viscosity (cSt) @ 100°C | 0.6 | 0.9 | 1.6 |
| Flash Point (°C) D92 | 78 | 100 | 160 |
| Density @ 25°C (g/mL) | 0.75 | 0.78 | 0.80 |
| Heat Capacity @ 25°C (J/K) | 2.11 | 2.12 | 2.11 |
| Thermal Conductivity @ 25°C (mW) | 0.116 | 0.121 | 0.143 |
| Dielectric Strength (kV) | 33 | 60.1 | 80 |
| Boiling Point (°C) (range) | 173 - 229 | 209 - 300 | 295 - 403 |
| Electrical Conductivity (S/cm, 23°C) | 1.3E-12 | 1.6E-11 | 8.13E-12 |
| D97 Pourpoint (°C) (D97) | -48 | -39 | -39 |
In the heart of every modern battery electric vehicle (BEV) lies a meticulously arranged network of small battery cells.
These “battery packs” are the key power sources for plug-in hybrid or full electric vehicles. Unfortunately, they’re also prone to excessive heat issues, such as battery thermal runaway, that can compromise battery lifespan.
Battery thermal runaway refers to a critical safety condition that can occur in EV batteries, where a self-perpetuating, uncontrollable increase in temperature and energy release leads to catastrophic failure, including fires or explosions.
Immersion cooling effectively suppresses and stops battery thermal runaway by providing direct contact between the coolant and the battery cells. This can prevent thermal runaway from spreading from one cell to the next.
Direct immersion can also enable faster charging. Why does that matter?
Battery electric vehicles are entering the market from an increasing number of OEMs. And as new competitors enter the market, consumers will consider the greater range of options available, with charging speed near the top of the list.
How can OEMs differentiate on BEV charging speeds? By considering direct immersion of the battery as an enabler for XFC.
Direct immersion effectively absorbs excess heat generated during faster charging. This ensures that the battery cells remain within their optimal operating range, promoting efficient charging and preserving the overall health of the batteries.
See for yourself in this short video that compares the difference in charging times between indirect cooling and direct immersion cooling.
Learn more about how choosing the right immersion fluid can enhance safety and performance in EV vehicles.
Contact us or read more about direct immersion cooling for electric vehicles on Lubrizol 360.
