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In Copenhagen, taxis have taxi-only EV chargers provided by the taxi companies. The police have not yet ventured towards EVs, but as part of doing that, they m

by sshine 2y ago

In Copenhagen, taxis have taxi-only EV chargers provided by the taxi companies. The police have not yet ventured towards EVs, but as part of doing that, they must build the charger infrastructure to guarantee reliable charging of their fleet. Allocating grid for fast charging in a densely populated area isn’t easy. Battery-powered chargers aren’t that common, and building noiseless ones is difficult. The commercial infrastructure for fast charging is just not good enough yet. Emergency fast chargers need better geographical distribution.

wakawaka28 2y ago
>Battery-powered chargers aren’t that common, and building noiseless ones is difficult. Noiseless ones means ones that don't use huge diesel generators to meet demand, I assume. You may as well put that fuel into a conventional vehicle if you have to do all that. It's surely more efficient than building like 3x as much stuff just to ultimately burn the same energy. >The commercial infrastructure for fast charging is just not good enough yet. Emergency fast chargers need better geographical distribution. I think it will never make sense. If fast service is required it will have to come down to battery exchanges, or else exchanging whole cars.
- sshine 2y ago
  > Noiseless ones means ones that don't use huge diesel generators to meet demand, I assume. No, the noisy part is actively cooling a ton of batteries confined to a crammed metal box without disturbing neighbors and keeping within the legal noise limits, which is often a very low boundary in highly populated areas for obvious but inconvenient reasons. Rapidly discharging a ton of batteries produces a lot of heat. Frequently overheating batteries will make them degrade more quickly. This quickly ruins the value proposition when TCO depends on so many things (physical design of EV charger and its ventilation, algorithmic design of battery management system, and electrochemical design of cells). > If fast service is required it will have to come down to battery exchanges, or else exchanging whole cars Have you looked outside? That's not how the world currently works. All companies that try to hotswap batteries inside cars are miserable. Real fast-chargers and very fast-charging (800V) cars actually exist. But yeah, besides a lacking charger infrastructure, adding range anxiety to patrolling officers must be the major dealbreaker.
  - wakawaka28 2y ago
    >All companies that try to hotswap batteries inside cars are miserable. You misunderstood. The cars must be designed for this, which they are not. Battery swapping was very effective for early EVs over a hundred years ago. >Real fast-chargers and very fast-charging (800V) cars actually exist. Nothing can be faster than swapping a battery. It should be possible to swap one in 2 minutes tops, if cars were designed for that. Of course, you'd also need a reliable consumer protection scheme, unless nobody ever owns a battery. You'd need insurance for the battery in any case due to how expensive they are and how easy they are to destroy.

by sshine 2y ago

wakawaka28 2y ago

>Battery-powered chargers aren’t that common, and building noiseless ones is difficult. Noiseless ones means ones that don't use huge diesel generators to meet demand, I assume. You may as well put that fuel into a conventional vehicle if you have to do all that. It's surely more efficient than building like 3x as much stuff just to ultimately burn the same energy. >The commercial infrastructure for fast charging is just not good enough yet. Emergency fast chargers need better geographical distribution. I think it will never make sense. If fast service is required it will have to come down to battery exchanges, or else exchanging whole cars.

sshine 2y ago
> Noiseless ones means ones that don't use huge diesel generators to meet demand, I assume. No, the noisy part is actively cooling a ton of batteries confined to a crammed metal box without disturbing neighbors and keeping within the legal noise limits, which is often a very low boundary in highly populated areas for obvious but inconvenient reasons. Rapidly discharging a ton of batteries produces a lot of heat. Frequently overheating batteries will make them degrade more quickly. This quickly ruins the value proposition when TCO depends on so many things (physical design of EV charger and its ventilation, algorithmic design of battery management system, and electrochemical design of cells). > If fast service is required it will have to come down to battery exchanges, or else exchanging whole cars Have you looked outside? That's not how the world currently works. All companies that try to hotswap batteries inside cars are miserable. Real fast-chargers and very fast-charging (800V) cars actually exist. But yeah, besides a lacking charger infrastructure, adding range anxiety to patrolling officers must be the major dealbreaker.
- wakawaka28 2y ago
  >All companies that try to hotswap batteries inside cars are miserable. You misunderstood. The cars must be designed for this, which they are not. Battery swapping was very effective for early EVs over a hundred years ago. >Real fast-chargers and very fast-charging (800V) cars actually exist. Nothing can be faster than swapping a battery. It should be possible to swap one in 2 minutes tops, if cars were designed for that. Of course, you'd also need a reliable consumer protection scheme, unless nobody ever owns a battery. You'd need insurance for the battery in any case due to how expensive they are and how easy they are to destroy.