I know electric cars don’t need multiple gears, but wouldn’t they benefit from them in anyway at high speed for example?
In: Technology
A gas engine is only efficient at a certain rpm range. Outside that specific range of speeds it loses power rapidly. So gearing let’s the motor stay in its sweet spot over a larger range of speeds.
Electric motors do not have this problem. They basically push as hard as tge amount of electricity you run through them regardless of what speed they are spinning at. The trick there is controlling the electricity to make that true … and we have very awesome computers to control the power flow nowadays.
That having been said… the faster an electric motor is spinning the harder it is to push more power into it. One solution to that could be a transmission but in practice it is easier just to raise the voltage of the battery so you can push harder. Modern EVs are running on 408V batteries for the traction motor. 🙂
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