FEV North America announced at the 2015 SAE World Congress (Detroit, Michigan) a novel liquid-cooled, high performance battery intended for PHEV applications.
As we understand the press release (sadly without any graphics) FEV's cooling concept is to use liquid-cooled modules, so no coolant passes between the cells.
The demonstration battery pack has 10.4 kWh and can supply 200 kW peak or 80 kW continuous power, which would be some 19.2C and 7.7 C respectively.
Performance sounds exceptional, but it's hard to tell how much of an advantage is offered by FEV's solution versus other options, especially on a cost basis.
"Designed for use in PHEV applications, the FEV battery features an innovative cooling concept and a modular design that provides high power output, robustness and safety, and comprises battery modules, pack, and the battery management system.
During operation, the battery pack provides 200 kW of peak power and 80 kW of continuous power with a stored energy content of 10.4 kWh. The pack, which uses pouch cells, has a weight of approximately 130 kg, and a volume of 80L. The modules within the battery pack are liquid-cooled Li-Ion cells, each with nominal energy content of 1.3 kWh providing energy density of 205 Wh/L and power density of 1,500 W/L for each module. Each module weighs 13.5 kg and has a volume of 6.5L.
A novel feature of the battery design is that no coolant passes between the cells, thus preventing any leakage inside the battery housing."