[amluto]

What are you doing differently? Unless you’re pulsing your charging or otherwise varying the current rapidly, then it seems that all you can really do is vary the current as a function of temperature, state of charge, and maybe some other variables. At the end of the day, if you’re going to deliver energy e in time t, you need average power e/t, and the fancier your curve, the more your peak power will exceed your average.

(And if you don’t want to overhead the cables or the connector, you care about current squared, giving you an added incentive to charge at near constant current or perhaps to charge some cells at a different rate than others.

What’s the trick here?

[taneq]

And to add to these questions - what are the consequences for increasing charging rates? Tesla has made some public statements regarding fast(er) charging (specifically targeting the 350kW Ionity chargers) to the effect that pushing that much power will degrade the batteries far faster for little gain.

Edit:

> Our technology is able to decrease the irreversible chemical reactions that happen during charging, so that the same batteries can be charged fast without compromising cycle life.

This seems to imply it's doing something to the battery chemistry? Maybe a brief pulse of high-rate discharge every now and then to help balance things out?

[_pmf_]

> This seems to imply it's doing something to the battery chemistry? Maybe a brief pulse of high-rate discharge every now and then to help balance things out?

That's usually within the domain of the battery management system. There's not much the charger itself can do (there is intelligent communication between EV and charging equipment, but not as granular as the view the BMS has).

[timsher]

You're correct - On a high level, our technology is based on pulses that are fully adaptive, and their parameters are adjusted by the AI controlling the charging.