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by ldrndll
1731 days ago
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For people (like me) who don't appreciate the advantages of 800v vs 400v, here's an article about why this is useful: https://eandt.theiet.org/content/articles/2021/02/800v-syste... > Such systems enable greatly reduced charging times, as long as they are using fast chargers capable of working at up to 270kW. > It also allows for weight reduction, as less copper is needed in the electric system. Electric motors are much simpler than combustion engines in construction and at their core they have a rotor, which is driven by a changing magnetic field. To induce this field, electrical systems often use up to four times the amount of copper found in combustion engines; higher voltages reduces the need for large amounts of copper. This permits smaller motors, freeing space in the vehicle for batteries. |
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> If the charger provides 800V and a minimum of 300A, the Taycan can charge from five to 80 per cent in 22.5 minutes.
Wow! That's an insanely huge amount of current. Obviously the cables would have to be very thick to reduce transmission losses, but then you'd also have to have sufficient insulation/protection at 800V!