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As long as the timeframe scales with the size of the battery. A phone battery should be swappable in a few minutes. A car battery should be swappable in a day o

As long as the timeframe scales with the size of the battery. A phone battery should be swappable in a few minutes. A car battery should be swappable in a day or two. They have to be heavily shielded in case of an accident.

LeifCarrotson 5y ago
Nonsense, a complete engine in an internal-combustion vehicle - which is vastly more complicated than a battery in an electric vehicle, and which often requires removing various structural members in the front of the vehicle - can be swapped in under two days. A battery should be a few electrical and coolant connectors and maybe a dozen bolts, rolling out from under the vehicle with little else to fuss with. Engineering it such that you have to replace and bleed the brake lines or remove suspension components is basically the same as designing for non-replacement, as if you were gluing in a battery.
Dylan16807 5y ago
You word it like you specifically want bigger batteries to take longer. Why is that? All else equal I'd expect a laptop battery to be easier than a phone battery, and it's definitely possible to design a car battery to swap in minutes even with shielding.
cronix 5y ago
> A car battery should be swappable in a day or two Nio currently swaps out their car batteries in about 3 minutes, much like you'd get an oil change at Jiffy Lube or something. It's completely automated except someone pulls the car in/out of the bay for you. I imagine that human step will be relatively short lived. > they have to be heavily shielded in case of an accident. Yes, it's just a simple matter of purposefully designing it to be removed easily. This is cued up to where he gets to the battery swap station: https://youtu.be/hTsrDpsYHrw?t=358 https://youtu.be/hTsrDpsYHrw?t=358
- dzhiurgis 5y ago
  And how many people drive more than 300km per day AND don't have the time to wait 50 minutes, but only got 5? The replaceable car batteries is technically possible (heck, everything is possible with engineering), but totally useless.
  - plzbo 5y ago
    So it's possible and you reply to a person telling you about a legitimate usecase but you continue to go on about how it is totally useless?
    - kwhitefoot 5y ago
      How many such stations will be built and how many different shapes, sizes, battery chemistry, and capacity batteries will each station have to have in stock? It sounds like it isn't even possible except in the trivial sense that if one has a fully charged battery of exactly the right type on hand, then it can be swapped in five minutes. Sounds like each station would either have to have a large store of batteries or it would have to only serve one model of car. The first is a large capital cost, the second generates very little revenue. To compete with, say Tesla, Nio would have to build hundreds of battery swap stations in Europe. Tesla has 601 sites in 27 countries. When I drive from Norway to the UK I am rarely more than 50 km from a supercharger.

LeifCarrotson 5y ago

Nonsense, a complete engine in an internal-combustion vehicle - which is vastly more complicated than a battery in an electric vehicle, and which often requires removing various structural members in the front of the vehicle - can be swapped in under two days. A battery should be a few electrical and coolant connectors and maybe a dozen bolts, rolling out from under the vehicle with little else to fuss with. Engineering it such that you have to replace and bleed the brake lines or remove suspension components is basically the same as designing for non-replacement, as if you were gluing in a battery.

Dylan16807 5y ago

You word it like you specifically want bigger batteries to take longer. Why is that? All else equal I'd expect a laptop battery to be easier than a phone battery, and it's definitely possible to design a car battery to swap in minutes even with shielding.

cronix 5y ago

> A car battery should be swappable in a day or two Nio currently swaps out their car batteries in about 3 minutes, much like you'd get an oil change at Jiffy Lube or something. It's completely automated except someone pulls the car in/out of the bay for you. I imagine that human step will be relatively short lived. > they have to be heavily shielded in case of an accident. Yes, it's just a simple matter of purposefully designing it to be removed easily. This is cued up to where he gets to the battery swap station: https://youtu.be/hTsrDpsYHrw?t=358 https://youtu.be/hTsrDpsYHrw?t=358

dzhiurgis 5y ago
And how many people drive more than 300km per day AND don't have the time to wait 50 minutes, but only got 5? The replaceable car batteries is technically possible (heck, everything is possible with engineering), but totally useless.
- plzbo 5y ago
  So it's possible and you reply to a person telling you about a legitimate usecase but you continue to go on about how it is totally useless?
  - kwhitefoot 5y ago
    How many such stations will be built and how many different shapes, sizes, battery chemistry, and capacity batteries will each station have to have in stock? It sounds like it isn't even possible except in the trivial sense that if one has a fully charged battery of exactly the right type on hand, then it can be swapped in five minutes. Sounds like each station would either have to have a large store of batteries or it would have to only serve one model of car. The first is a large capital cost, the second generates very little revenue. To compete with, say Tesla, Nio would have to build hundreds of battery swap stations in Europe. Tesla has 601 sites in 27 countries. When I drive from Norway to the UK I am rarely more than 50 km from a supercharger.