It's already being done on some EV's [1][2]. I think it less about batteries going bad and more about getting people back on the road quickly. I think it's also risky for end users to be doing progressively faster and faster speed charges. They can catch fire with kids in the car.
Using the linked method the charging and battery testing occurs in a safer location away from occupants and allows for slower charging and less spikes on the power grid perhaps even using more solar power to charge reconditioned packs. Get this process fast enough and people will demand EV's because they can get back on the road faster than using a petrol station.
It's also about staying current and staying green. As more efficient batteries come out in a few years, one can swap out and be more green and have more range. That battery pack is a massive investment and this would keep that investment strong. Most people are not going to voluntarily fork out another $15-$50K depending on vehicle and will just let their existing pack age out.
Yes, of course it's possible, Elon Musk demonstrated fast swap for Tesla back in 2013 and it went absolutely nowhere, because logistics and cost are not viable.
It is not in any way green to replace an old battery pack that has 90% capacity and no operational problems with a new battery pack, even if that new pack has more range. The most green approach would to continue to use the old battery pack until it is unreliable. Not to mention that there is a real cost to providing new extended-range packs as replacements for old ones that will be passed on to the consumer, even as technology progresses. Unless I deeply needed that added range, why wouldn't I just choose both the greener and cheaper solution by paying literally nothing and continuing to use the old pack?
Most of us EV owners already get on the road "faster than using a petrol station" since we charge overnight and spend literally zero time waiting for the car to finish fueling. There is no more risk to charging my car at home than running a vacuum or the dryer.
Battery packs used in EVs since the aughts have been remarkably resilient and completely unnecessary to exchange. Battery swaps are a niche here, not a primary use case - given their size and cost it will be especially expensive and difficult to coordinate even if the swap itself is easy.
> Elon Musk demonstrated fast swap for Tesla back in 2013
Demo in that he showed how he thought the experience would be, not an actual demonstration of the tech. 99% sure nothing actually was done during said "demo", the cameras, which they were free to put anywhere, conveniently showed absolutely nothing.
Using the linked method the charging and battery testing occurs in a safer location away from occupants and allows for slower charging and less spikes on the power grid perhaps even using more solar power to charge reconditioned packs. Get this process fast enough and people will demand EV's because they can get back on the road faster than using a petrol station.
It's also about staying current and staying green. As more efficient batteries come out in a few years, one can swap out and be more green and have more range. That battery pack is a massive investment and this would keep that investment strong. Most people are not going to voluntarily fork out another $15-$50K depending on vehicle and will just let their existing pack age out.
[1] - https://www.youtube.com/watch?v=-5BPL4Nm1q0 [video][8 mins]
[2] - https://www.youtube.com/watch?v=1kZgG58zz8U [video][2 mins]