Electric Vehicles

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Electric Vehicles are a key part of our tomorrow and how we get there. If we can get all the fossil fuel vehicles off our roads, out of our seas and out of our skies, we'll have a much better environment. This community is where we discuss the various different vehicles and news stories regarding electric transportation.

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Kia And Hyundai Are Exploring Structural Battery Packs Which, If Successful, Would Significantly Improve EV Range But Could Complicate Battery Upgrades Or Replacements (www.torquenews.com)

submitted 4 days ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 4 days ago (1 children)

Most EV drivers rarely use all of their battery range; they only need it on long trips. Therefore, batteries built into load-bearing automotive components would not be needed for daily use; they could be maintained at the ideal charge level for the battery formulation and rarely used except for long trips

I wonder what the user experience for that would be. If I want some charging target amount for daily use, but the car wants hard-to-reach battery cells to float at 66% or something whereas I want overall 80% of range, maybe the charge selection screen would just suggest "76% for best longevity"? Or hide it all behind "80%" but the ramp to 100% isn't quite linear?

[–] [email protected] 2 points 4 days ago

Something seems missing from the description. What would make the most sense with the articles description is if there were two packs each with different chemistries. One cheap and low density, such as NA-Ion (Sodium-Ion) that could take care of 90% of EV driving needs for trips under, say, 100 miles. The second pack being a much higher density chemistry like NMC (Nickel, Manganese, Cobalt) which could add significantly more range for the same cubic cm of volume in the vehicle, but the battery would have far fewer cycles compared to other chemistries.

The idea being, beat the heck out of the Sodium Ion battery and make it easily serviceable/replaceable at the cost of range for the same volume consumed, while the NMC battery would be gently cared for and only called on in the more extreme demands of range.

If that's what the author was trying to say, it was not clear.