Hi the Stirling's fans,
Ho thanks for the question Andrzej: I try to be quick because I'm very late to see it... You can bring/translate this answer to the polish forum because polish is very hard for me, despite all my efforts
The batteries' cost and maintenance are indeed the main issue on an electric car, but the last evolution NiCad batteries by SAFT (FRANCE) were strong and reliable. NiCd technology is especially resilient to any bad treatment that undoubtly occurs lasting the life of the vehicle (strong discharge and charge, peak of current as regenerative braking as re-launching the car)
I indeed believe that the new 100% Lithium strategie will entail serious problems because Lithium is irremediably crashed in case of over/under load, even for a few minutes, and doesn't enjoy at all strong current, whatever the direction of it... But it is true that it has a much better density of energy that NiCad, which is itself better than the Lead Acid.
Regarding the energy density, it is clear that without hydrocarbons, no strong autonomy is possible. I don't like hydrogen for several reason, and the first one is that it is NOT an energy resource, only a carrying mean of energy, and quite bad to store, produce, distribute to the final users... Such a nuance !
That's why I recommend the Triple Hybrid Design... And with triple hybridization, one can throw energy (thermal energy converted into electrical) directly inside the power box by "shunting" the batteries and avoiding the problem of load/unload yields, while cutting their ageeing
Today, here are some numerical data about the Berlingomoreen CATHI
, coming from my last measures :
22.3 kWh / 100 km / 1600 kg = 14 Wh/kg/100km
Precision 1 :
These are electrical kWh. A thermal equivalent can be obtained by multiplying by 3
Regarding an equivalent in Liters of gasoline, one reaches about 7L/100 km, quite good with a poor SCx of 0,72.
precision 2 :
Berlingomoreen is supplied with the OPALE solar photovoltaic energy
precision 3 :
to find the slide show of the building of Berlingomoreen CATHI in its FAQ of 09/1st 2011