EEStor Inc. Granted Patent for New Electric Vehicle Battery

EEStor Inc. was granted a patent last week on highly energy dense electric storage units for electric vehicles.  Better known as EESUs, these batteries may revolutionize energy storage because unlike lithium-ion cells, this device is said not to degrade with cycling.  Therefore, these batteries could theoretically have an unlimited lifetime, GM-Volt reported.

The core ingredient is an aluminum-oxide-coated barium titanate powder immersed in a polyethylene terephthalate matrix.  The EESU is said to have the ability to hold 52.220 kWh of energy, and weigh roughly 281.56 pounds.  The patent also mentions that the EESU cannot explode when being charged or upon being impacted – a must if it is to be used in vehicles.

EEStor currently has an exclusivity agreement to build EESU-powered ZENNergy drive electric vehicles with the Canadian company Zenn.  Earlier this year, Zenn reported that they would receive prototypes by the end of 2008.  The CEO of Zenn said, “The timeline for the delivery of an EESU is entirely within the purview of EEStor and as such I cannot comment on delivery timelines.  I will restate that ZENN remains confident in the launch of an EEStor EESU powered by cityZENN by the last quarter of 2009.”