Etanol.nu

The claims made of the EESU are:

Nontoxic and non-hazardous
Non-explosive
For a 52 kWh unit, an initial production price of $3,200, falling to $2,100 with mass production is projected.[7] This is half the price per stored watt-hour of lead-acid batteries, and potentially cheap enough to use to store grid power at off-peak times for on-peak use, and to buffer the output from intermittent power sources such as wind farms.
No degradation from charge/discharge cycles
4-6 minute charge time for a 336 pound (152 kg), 2005 cubic inch (33 L), 52 kilowatt hour (187 MJ), 31 farad, 3500 volt unit, assuming sufficient cooling of the cables.
The unit will come equipped with a built in Buck-boost converter (DC-DC voltage converter) to provide the proper input/output voltage[8]
A self-discharge rate of 0.1% per month

The prismatic cell features an increased energy density through new anode and cell designs. New materials provide increased cycle life and energy density. In addition, A123Systems is developing what it calls a nanocomposite separator. The result, said Fulop, “is essentially a cell without a separator...it’s not a conventional approach.”

On the cathode side, A123Systems has scaled up its efforts to reduce costs through improved and more efficient processes, and continues to expand cathode development to improve both capacity and energy.

At the cell level, the energy density (Wh/kg) of the new 20Ah cell is 50% greater than that of the old 26650 cylindrical cell (from 2007), while the module level energy density increased by 30%.

EEStor är inte ointressant förstås, speciellt med tanke på att superkondensatorn i sammanhanget kan sägas ha obegränsad livslängd. Man pratar väl om upp till 100 000 laddcykler.

Men med tanke på att man inte har visat upp ens en prototyp utan mest bara pratat om material osv ännu så är det väl rätt tidigt att jubla över detta. Men skulle dom lyckas med det dom påstår så är nog elbilens glada dagar definitivt här:



Ett 152 Kg 52 kWh "batteri" med obegränsad livslängd för 2100$ vid massproduktion. Det skulle nog fungera :-

Power is All About Safety
Tesla Motors’s engineers selected cells from a reputable Fortune 500 battery supplier that has produced billions of safe, reliable, Li-ion cells. We combined this basic proven cell technology with our own unique battery architecture to provide multiple layers of protection. Our battery design ensures that should any cell fail, adjacent cells do not.

We then collaborated with an outside firm known for expertise in lithium ion battery safety to perform hundreds of tests to validate the safety of our design. In these tests, we set out to simulate a worst-case scenario in which a cell develops a serious malfunction. In each test, we set a cell on fire in the middle of a Tesla Motors battery pack (by intentional heating) and observed the results. Our design succesfully contained these failures to a single cell in each instance - proving the safety of our battery design.

The Battery Safety Monitor, mounted inside the battery pack’s protective enclosure, monitors voltage, current, acceleration, angle, and detects smoke or moisture. Like the controller for an airbag, the Battery Safety Monitor responds to an emergency - in this case by automatically disconnecting the battery pack from the vehicle and shutting down power to the car and to all electric cables in the car.

None of the Tesla Roadster’s high voltage systems are accessible to accidental contact outside their protective enclosures and jacketed cables. Only with special tools can someone gain access to any high-voltage components. Our high-voltage systems are enclosed, labeled, and color-coded with markings that service technicians and emergency responders understand.

Tesla Motors has designed and built a safe and efficient battery that propels the Roadster over 200 miles on a single charge