EV Weight

Any news worthy story. Good things to watch at the Cinema, Theatre, on TV or have you read a good book lately?
Post Reply
greentangerine
Posts: 63
Joined: Mon Aug 23, 2021 12:31 pm

EV Weight

#1

Post by greentangerine »

Another article from the Guardian's EV mythbusters series ...

https://www.theguardian.com/business/20 ... re_btn_url
65 x Ø58mm SunnPro/Gledhill 450l
Solis Mini 4G 3kW/Sharp ND210/2.94kWp
SB1600/Sharp ND220/1.76kWp
SB1600/Kinve 235/2.115kWp
Dean Forge Croft Clearburn 11kW
SoFar ME3000/Pylontech US2000/19.2kWh
Ecodan 11kW HP
MG4
Zoe R135
PVOutput
Mart
Posts: 1294
Joined: Mon Jun 14, 2021 1:17 pm

Re: EV Weight

#2

Post by Mart »

I thought this bit was important:
However, in the longer term, the assumption that electric cars will always be heavier is also open to question. Auke Hoekstra, an energy transition researcher at the Eindhoven University of Technology, estimates that batteries are cramming twice as much energy into the same weight every decade. If that continues, the weight problem will disappear before it has started.
That ties in with the general rule (I'd heard of) that outside of technological leaps, battery density (weight and volume) was typically improving ~5% per year.

Lots of man-maths here, but that also suggests to me that the increased weight limit for BEV trucks in the EU/UK of 2tn, might not be needed in 5-10yrs, assuming a long range BEV truck has a battery weighing in at 4-6tn. I mention this, since it's the max weight vehicles, such as trucks, that do pretty much all the damage to our main roads.
8.7kWp PV [2.12kWp SSW + 4.61kWp ESE PV + 2.0kWp WNW PV]
Two BEV's.
Two small A2A heatpumps.
20kWh Battery storage.
Post Reply