And I totally agree with your comments on doing a long trip.emgf wrote: ↑Sat Jan 12, 2019 11:19 amI totally agree with your charging strategyEDi99 wrote: ↑Sat Jan 12, 2019 8:25 amFor a long one-day trip of appr. 1.000 km a schedule of driving between 2 and 2,5 hours followed by between 20 and 30 minutes charging is very relaxing. Ample time for a coffee or toilet visit. What we've learned over time is that it is better to stop more frequently and charge shorter compared to charge above 80% and drive longer between stops.
To be able to drive like that, it's needed that there are:
- enough, frequent charge locations with multiple chargers (otherwise there is a risk you have to wait).
- chargers should be (>) 100kW - otherwise it takes too long to charge
- reliable chargers (preferably with online real-time info about availability) - that enables you to arrive at 5% SoC or lower.
- a battery size large enough to take you appr. between 225 and 250 km with max 80% SoC, in almost any weather condition (otherwise you have to stop to often)
Usually on such a trip we depart at 100% SoC from home or hotel (a fast enough in-car charger is needed for that ) and also stop for lunch or dinner for more than 30 minutes allowing us to charge up to 100% SoC again. Recently we dit a trip Amsterdam-Berlin (800km) with just one lag of 300km between stops (avg 122 km/hr) - all others were appr. 200km or shorter.
I'm sure I'd find 20-30mins charging every 2-2.5hrs reasonably ok. But isn't that a little optimistic? Unless you are driving pretty slowly, you will need at least 50% charge every 2hr? Can you really put that in in 20mins? That's 120kW... But I take your basic point.
Your list of requirements for long-trip driving is spot-on.
Unfortunately, in the UK at least, the required infrastructure just isn't here yet. We have quite a lot of charge points, but very few with multiple CCS on the same site. Only a couple of 100kW chargers in the country. Unreliable chargers - especially Ecotricity, which has the monopoly of on-Motorway charge points. Some have on-line real-time availability, but even if that works, you still can't rely on a single charger being available when you get there. So on a long trip, you just can't afford to get down to 5% en route. And to avoid Ecotricity, you have to drive off the Motorway, maybe only a couple of miles, but still an overhead in time and energy consumption.
I'm planning a longish trip for just after I get my car - only c280M each way, so only one charge - but the very fact that it requires "planning" is indicative of the immature state of our infrastructure. My wife's low opinion of EVs will be amplified if we end up spending 3hrs at an AC charger without a restaurant in sight...