Tesla shares 48V architecture with other automakers to move the industry

Re:Tesla shares 48V architecture with other automakers to mo... by grecy on Thursday December 07, 2023 @08:23PM (#38564214)

> The EV and hybrid electric world were talking about 48 volts when Musk still worked at PayPal, if not earlier.

You are confounding the two electrical systems in an EV or hybrid (or mild hybrid).

One is used to drive the wheels - these are very commonly 48V in a mild hybrid and something like 200V or 400V or 800V in an EV. This is only used to power the wheels - nothing else.

The other electrical system is used to power literally everything else. The infotainment system, heated seats, power windows, lights, powered seats, electric power steering, electric assist brakes, etc. This has always been 12V in every car ever ^ (ICE/hybrid/EV) (including every Tesla).

The Cybertruck is the first vehicle ever to move the 12V system to a 48V system.

^ Before about 1955 it was 6v. The move to 12v then was the last time it has changed.

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Re:Tesla shares 48V architecture with other automakers to mo... by hinkley on Friday December 08, 2023 @04:29AM (#38567023)

I’m talking about the same thing. Pumps and compressors and electronics systems.

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Re:Tesla shares 48V architecture with other automakers to mo... by grecy on Friday December 08, 2023 @05:22AM (#38567350)

You're talking about some of the things that would be on the accessory belt (serpentine belt) on an ICE, that need to keep spinning even when the ICE is off (power steering, A/C, etc.). That is a slightly more fancy engine start/stop.

You are not talking about high current devices like heated and cooled seats, defrosters, infotainment and audio amps, power windows, power seats, lights, etc. etc.

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