This kind of battery management is quite useful and quite necessary. When I read this for the first time on the NOS today, I was really like: “curious about the deep dive”, but at the same time I also read some caveats there.
It is actually the battery of my previous EV, but with the charging system of my current one, with a bit more cooling.
Battery management is not only cooling, but also heating, having a cooling system that can control that is a must. Modern EVs do this quite nicely, my Ioniq 5 pre-conditioned too. After all, the battery charges less optimally “fast” below 15 degrees and above 45 degrees. This cooling system is probably a bit more fine-meshed and more complex, but nevertheless: good that this was already known.
The 800V concept is therefore quite normal when you see modern EVs. The fact that this is equipped with a heat pump that can heat and cool over the battery is also quite a positive thing.
But even then you have a charging curve. This one is better than my Ioniq5 but I think that is also the design of the car, the i5 would probably be able to do it were it not for the fact that it is a production car with a long warranty.
What I do regret is that this article is also seen on the NOS until the news as: “Driving an EV as if it were a petrol car”. I get that the charm is there for when you make mega long rides, but with 400+km range I actually have enough for ~95% of my rides. The few times a year that I have to fast charge doesn’t matter much anymore. You don’t drive an EV to treat it like a petrol car, but precisely because charging can happen when it is stationary. I understand that you don’t have a gas pump in your driveway, but you do have electricity at home, don’t you? That is precisely the charm of electricity. It comes from practically everything! You will be able to charge your EV yourself by running a few hundred hamsters in a wheel.
This is clearly for the 24h of LeMans, and the car is designed for that. Not because 300kW is so revolutionary. I would find it revolutionary, however, if the curve could sustain that up to ~90%. My i5 holds up to ~60% full, and up to 85% it stays above 100kW. But again, I have now done that three times in 15000km. Most of the electricity comes from my driveway, or from a parking garage somewhere in a city near the customer.
Incidentally, while I recognize that my i5 is slower at 240kW, the scalability of the concept is very much there, and I’m glad that the students also indicate that. This is also the principle behind it — I secretly hoped that they had put that on a race car, because it is intended for airplanes and trucks. 1250V and about 3000A DC for 3.75MW of charging capacity. That literally adds a new dimension to “ride the lightning”
[Reactie gewijzigd door Umbrah op 13 juli 2023 20:39]
2023-07-13 18:04:00
#Student #team #shows #electric #racing #car #charge #average #300kW
