roadster wrote: ↑Fri Feb 04, 2022 4:33 am
Data wrote: ↑Thu Feb 03, 2022 6:34 am
My bro in laws Kia E-Niro EV fully charges from 20% in 54mins. Yet a 15 min charge puts around 140-150 miles in the tank. Charging at home from about 20% takes about 6.5hrs+ on a 7.2kw charger. Depends on the ambient temperature and costs him around £6.50 before the last price hike in energy. It has 201hp and a range of 382 miles in town and urban driving and 283 miles in more general use on motorways and country road driving. He's had his for 18 months now and it's a great car.
With respect you are quoting two different charging scenarios. Using a 7.2KW home charger you can only achieve 1.8 KW.H in 15 minutes. This represents less than 3.3 % of the battery capacity so a distance of 300 X 3.3 / 100 = approximately 10 miles, far from 140-150. Your fast charge scenario cannot be achieved on domestic supplies so if a large proportion of the population need public charging points ... join the queue! The improvements in battery technology don't make any difference to this unless there is a massive investment in extremely fast and high powered charging points. In practice the price of this is extremely high compared to the price of adapting current petrol stations to provide compressed hydrogen, so even though battery power is the current favourite my money is still on hydrogen, and a think this will be driven by commercial vehicle technology then followed by private cars as the infrastructure and supply chain develops.
Indeed roadster, that is correct and I do make that clear. Obviously rapid charging is only available from public or commercial chargers and that's where the Kia E-niro and other makes can get up to 150 miles or more in just 15mins at an ambient temp around 18-20c when using them. I quoted the typical home charging time, charging rate & cost too which would be at 7.2kw or often lower. In my part of the world (Essex) fast public chargers are becoming available in ever increasing numbers and are being installed continuously by various big players. Indeed quite a few of these chargers are free to use & are often available at large supermarkets in my local area. It's not until you get an EV you start to notice them. Charging black spots exist but are and will disappear quite quickly now that the big players are installing chargers fast.
On a recent 390 mile trip with bro in law in his E-niro we had no problem finding a charging point. We stopped for a very quick snack. This took 20 mins and the car batteries took on board almost 160 miles in that time. That's the only charge the car had during the trip. The car itself constantly displays all the charging stations available to you along your journey telling you which ones are in use and any that are not working. We travelled from North Essex to the Midlands and trust me, there was no shortage of charging stations. They were literally every few miles. Our hotel had free overnight charging if needed. Once you get an EV most folks quickly loose their range anxiety. But choosing the right car/range for you is important.
The new battery technology will and is already making a huge difference to every aspect of EV ownership. Cars will soon spend about the same amount of time at a charging station as an ice car spends at a petrol pump. That's coming very soon. A brand new 24 car fast charging station not far from me can accommodate these new fast charging times. Most EVs in everyday use already only spend between 10 and 30min at the charging station (source: AA). Full charge only needed if undertaking a very long journey and better for battery life to not to fully charge all the time. It's a very interesting field of development.
Hydrogen, well that's another story. It certainly won't be as convenient or as available for years and years for road use. It's main application is really going to be for aviation & maybe some trucks. But frankly already EV trucks are being developed that far outperform anything hydrogen can power. Unless you are talking about hydrogen powered EV's. But they are still some way off being as good as straight battery powered EV's.
