TotalEnergies Released New Battery Cooling Technology
The Coolant Keep Plate improves safety for immersion-cooled lithium-ion batteries by preventing dielectric fluid displacement.
Updated on Oct. 13, 2026 in Electric Vehicles
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TotalEnergies Lubrifiants has introduced the Coolant Keep Plate, a passive device designed to enhance thermal management in lithium-ion battery packs. The technology is engineered for immersion-cooled systems to reduce fire risks and prevent thermal runaway propagation during cell venting events.
Why it matters
The technology addresses a critical challenge in battery safety by preventing the displacement of dielectric fluid caused by gas jets during cell venting. By keeping cooling fluid in place without requiring external power, it enhances overall system reliability.
TotalEnergies operates across 160 countries with 42 production sites worldwide. The new technology was developed by a team of 130 researchers within the company's R&D centers.
The players
TotalEnergies Lubrifiants
This division is responsible for the development and production of specialized automotive fluids and innovative battery thermal management technologies.
The details
The Coolant Keep Plate is a passive device positioned between the cell group and the venting interface. It functions by separating gas and liquid phases while maintaining essential dielectric fluid around the battery cells during venting.
Roadmap
This innovation signifies a movement toward passive, fail-safe components in the rapidly expanding sector of immersion-cooled lithium-ion batteries. It positions TotalEnergies to provide more robust safety solutions as the global automotive industry increasingly adopts specialized thermal management systems.
This development suggests future electric vehicle battery packs may offer increased protection against fire risks without needing additional electronic monitoring systems. Vehicle owners can expect these safety improvements to facilitate more reliable thermal performance in high-demand charging scenarios.
The takeaway
Passive safety systems represent a growing trend in making high-performance battery packs more resilient under extreme conditions. Drivers should keep an eye on upcoming vehicle specifications that highlight advanced thermal management as a key selling point for safety.
Further reading
For more information on the evolving standards for battery thermal safety, visit the Electric Vehicles section.
Source note: This article includes information reported by Ai-online.
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