Audi's in-house motor design packs extra-dense copper, reduced need for heavy rare earths, and a few novel battery charging tricks.
. Both eliminate costly manufacturing effort and boost reliability, but the Porsche/Audi development team claims its copper bar-stock hairpin setup ultimately positions more copper closer to the rotor than is feasible with these other designs. And hey, the first P in this platform name suggests there's budget for some laser welding; now let's hope those welds prove durable.
Generating big power from a permanent-magnet motor causes a lot of heat to build up in the magnets. The heaviest, rarest, costliest rare-earth materials are the ones best suited to tolerating extreme heat. Cooling the magnets allows PPE to sustain big power from more mainstream magnets.
What we do know is it should charge from 10 to 80 percent in just 30 minutes, with 186 miles added in the first 10 minutes. The peak charging rate is quoted as 270 kW—that's 80 kW shy of the peak 350kW rate today's best chargers can dispense to vehicles with an 800-volt system. Audi finds that its battery pack heats up more quickly at 350 kW than it does at 270 kW, so its strategy can sustain the peak charging rate for longer at 270 kW than it could at 350 kW.
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