Electric highways for Electric Trucks - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: January 02, 2022, 01:24:56 am
content: e-highways for heavy electric vehicles.I guess this is or will be capable of working successfully? feasible time will tell.seek your opinion because I am unsure about viability of the trolleybus system as a whole.made this video aggregation of content about electric highways.that go by other names such as electric motorway or e-highway.even the name solaroadway or solar electric highway can be used.if solar farms or solar roadside verge is part of the trolleybus e-highway systemstarting with the Tesla semiTruck that has no pantograph system unlike the experimental Scania diesel hybrid electric trucks shown in the videoI note meny videos about electric hybrid trucks useing the electric motorway or e-highway do not show the pantograph system instrumentation panelor any dashboard that is otherwise requested by a standardised pantograph system on an electric highway or e-highways code.there is no mention of trailer battery configurations and modular pallet batteries on the underside of trailersthat would supplement extended range off the electric highway at the cost of maximum cargo by weight.two more videos about this are-Tom Scott - The highway where trucks work like electric trainsReal Engineering - The Truth About The Tesla SemiTruck

author: Faringdon
author_rank: Super Contributor
timestamp: January 02, 2022, 01:32:36 am
content: may work on some roads...maybe if dedicated ones for trucks only...otherwise the maintenance of those lines would be too problematic i think. Its not like the train rail system where you can do maintenance at night when theres no/few trains.Trucks may well go Hydrogen/Fuel cell.

author: mzzj
author_rank: Super Contributor
timestamp: January 02, 2022, 04:09:47 pm
content: Quote from: Faringdon on January 02, 2022, 01:32:36 amIf they can service the lines even in crowded city centers they can probably do it also on multi-lane highway.Electric ”trolley” buses have been in service for over 100 years so technology is pretty much sorted out already.Additional small battery would solve ”derailment” problem, allow overtaking and covering shorter distances without wires.

author: ahbushnell
author_rank: Frequent Contributor
timestamp: January 02, 2022, 11:39:14 pm
content: I think this is done in some mines. Maybe coal. They have overhead lines for going out of the mine with the load in the giant trucks.

author: rob77
author_rank: Super Contributor
timestamp: January 03, 2022, 12:28:13 am
content: in most european countries we have something called trains , it's already here , already powered by electricity. unfortunately no startup can get funding for it because it already existselectric freight trains + trucks for last mile delivery would be a way, actually in the past (30 years ago) it was like that, but then the "nothing on stock because cash flow" era came and the trains were replaced with trucks because of speed.electric highway is bullshit... cost of overhead lines on highways would by astronomical.. and you need diesel trucks for the "last mile" delivery anyway. diesel because the "last mile" might be actually several hundred kilometers

author: f4eru
author_rank: Super Contributor
timestamp: January 04, 2022, 09:31:53 am
content: This "active charging highway" with overhead lines is kind of "meh".a complex expensive solution to a very narrow, almost non-existant problem.But it is really a very very good way to get juicy subventions from taxpayers.Yay ! Take my money and make "research" .....Charging trucks can be done easily when stopped, by rearranging the stop times of a driver.Today, in EU, a truck driver must make 45min pause after driving 4.5 hours.Really enough to recharge the trucks.Not sure of the flexibility today, but legislation can evolve to accomodate 3h drive/30min charge(pause) time, or even smaller cycles of 2.5 hours, to accomodate reasonnably sized batteries. Flexibilizing work time by keeping the same work/pause ratio should be good for drivers health, logistics, cost and energy management, practical organization. No real downside!I'm confident in the long run, 4.5h batteries will be common in long range trucks also with the ongoing technical evolution of batteries.

author: mzzj
author_rank: Super Contributor
timestamp: January 04, 2022, 05:46:45 pm
content: Quote from: f4eru on January 04, 2022, 09:31:53 amI'm not so sure that long-haul trucks are going to move to battery power anytime soon.Large long-range diesel truck uses about 70l diesel per hour. And modern truck diesels have around 200g/kWh BSFC (brake specific fuel consumption)-->60kg per hour or about 300kWh of energy. 4 hour battery would be 1200kWh

author: Siwastaja
author_rank: Super Contributor
timestamp: January 04, 2022, 06:36:01 pm
content: Yeah, long-haul diesels are the last things on the roads to be electrified; and I don't mean because of any huge unsolvable challenges, but simply because they have the least need for replacements.These trucks are internal combustion engines at their best (large engines running 99% of the time at optimum efficiency), so following the logic of fixing problems starting from worst offenders, there's still a long way to go.It will eventually happen, though. During that time, battery technology keeps evolving, meaning that there is no challenge at all. Just drive 3 hours and rest 30 mins or whatever as described by f4eru above. Nearly doable already with today's battery tech. Certainly doable in 10 years, assuming technology evolution doesn't completely stop.

author: f4eru
author_rank: Super Contributor
timestamp: January 04, 2022, 08:22:02 pm
content: Crossover point for short range is in 3 yearsCrossover point for long haul is in 6 years"Crossover point" means >50% new trucks electric.