En del intressant angående nuvarande status på batteri-sidan för kommande Chevy Volt:
http://www.autobloggreen.com/2008/01/10 ... nise-grey/
Testerna verkar gå bra hittils om man ska tro på vad dom säger.
Citat:
ABG: How are the power and the energy output of the batteries looking?
Denise Gray: Things are looking good. We're not on our final design yet. We are learning and, quite frankly, we really had to make some calls. Do you wait until the perfect battery is done? That gives you everything you need and then do testing or you take iteration 1, iteration 2, and you kind of keep inching your way to the final design. We chose to take the iterations because there is so much learning at the beginning. The power and energy is confirmed to what they have said, I would get with this iteration, yes. But we are not done to our ultimate goal of our overall power, energy, manufacturability, cold temperature performance yet.
För våran del:
Citat:
ABG: Do you have a target that you can share with us as far, what would be acceptable in terms of cold temperature degradation at minus 20, minus 30, and minus 40?
Denise Gray: We are not done yet. That story is not complete at this point, because quite frankly, we've got the optimization of the battery from a power-energy in cold temperature but you also have the optimization within the vehicle environment itself. And, quite frankly we are trying to get as much as we can get out of the battery and then once we understand what that limitation is and try to meld that into the vehicle trade off, because sometimes the vehicles can mask any kind of trade off you make with the batteries. So, that story is not complete at this point in time.
Sen angående aerodynamik vs vikt:
Citat:
ABG: Recently, I toured the E-flex Design Studio in Warren [Michigan] with Bob Boniface. And there was a lot of discussion about the aerodynamics of the Volt. They found that even at lower speeds, at city speeds, aerodynamics had much more effect on the range of the vehicle than mass. They could increase the mass a little bit with bigger battery or just heavier components, and have a less of an impact than the aerodynamics. Presumably, that is because by not burning off kinetic energy through aerodynamic drag; you can recapture that as regenerative braking. Do these lithium batteries allow you to capture energy faster and recapture more of the kinetic energy than you would be able to do nickel battery on the hybrids that we have today?
Och vidare:
Citat:
ABG: Is there anything else you want to share about what is going on?
Denise Gray: Yes, we are running this fast as possible. We got a number of different swim lanes all in parallel, from the cell, the battery pack itself, from electronics to the thermal, to manufacturing. How we are going to manufacture these things at high quantities with reliability and robustness and then we got all of the vehicle work happening, the vehicle control work is happening as well. So, there is a lot going on in order to be able to pull this off.
Tycker man får intrycket av att det är en väldigt seriös satsning dom gör. Ska bli intressant och se vad det leder till, och framförallt kanske när.