You're not going to see a significant increase in voltage over ~400V maximum since all the QC stations are pretty much limited to 500V maximum. There is probably a very good reason why all electrified vehicles are all around 400V maximum - namely that higher voltages are harder to handle.ydnas7 wrote:(ie 48 modules under body, 24 modules in boot)
ie 50% increase in cell count + 30% due to voltage increase = 1.95 increase in kWh ie sufficient to get to 150mile EPA from a 84mile EPA start
I suppose at some point in time we'll see 1000V systems, but not really necessary for automobiles. Perhaps trucks and other vehicles with large storage requirements. 1000V would be useful for extremely quick charging to reduce cable size, but perhaps an onboard DC-DC inverter would be used on-board to reduce the 1000V to pack voltage.
I disagree, there are a lot of middle ground scenarios that L2 (3-20 kW) works very well for. In fact, I'd like to see more vehicles go with 10-20kW onboard charging like Tesla rather than being limited to 3.3-6.6 kW like the majority of plug-ins today (PHEVs included). The charging stations are a lot cheaper than DCQC stations, too, and at 20kW gets you a lot of range in an hour, or a typical meal break. 10-20 kW charging for a PHEV would let them completely refill over lunch, doubling EV miles, instead of just adding about 10.braineo wrote:L2 are useless, L1 are better for 8 hour parking at work and much cheaper. DCQC Chademo are game changers for a metro area. 20 minute for 80% charging can't be beat.
All good questions/points - I have to wonder if the survey targeted the wrong people (current LEAF owners) in terms of battery cost. Most of us really see the value of additional range and are familiar with Tesla's cost of $10k for 25 kWh and a low-end price of the pack being around $5000 (what one can buy almost new cells for off eBay).adric22 wrote:Actually, I've been saying for a while now that I suspect Nissan's cost on the Leaf battery pack is somewhere around $5,000 to $6,000. And I expect that price to drop even more several years from now.smkettner wrote:If max retail cost to double the battery is $5,000..... Why can't Nissan sell us a replacement battery for $5,000 maybe even less?
Nissan limiting us to $5000 maximum to double the EPA range (or add about 24 kWh of battery capacity) was a surprise to me. I answered about $3500, but I might find it worth up to $5000 over the current cost of a LEAF. But a non-EV owner would probably expect 150 EPA range at the same price as the current LEAF - and that's really who Nissan should be asking about cost.