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Topic: tesla gives 48 volt car plans used in cybertruck to legacy auto (Read 315 times) previous topic - next topic
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Re: tesla gives 48 volt car plans used in cybertruck to legacy auto

Reply #1 –
I'm pretty sure it's a split 24v system that trucks/army/farms used since forever but duplicated, if only at least it will act like the main battery for everything and not have a separate 12v system (along with it's weight) that modern ev's had so far cause man they felt like systemd in front of automobiles :D
It's logical too cause who the heck thought 280v is a good idea at first, almost like european tramways.
 

Re: tesla gives 48 volt car plans used in cybertruck to legacy auto

Reply #2 –
Eh what? You mean electric vehicles use 48V or even less to power the motor and not just the lights? They must need wires the size of scaffold poles!  ;D  I would have imagined you would want to up the voltage as much as possible to somewhere around 110V (a nominal 96V, 108V or 120V?) which is pretty safe but then run the rest of the system at a standard 12V, keeping the higher voltage parts short and well insulated. I would also tap the main battery to give a low voltage or use a step down regulator, a small second battery might be useful as a kind of CMOS backup to preserve data, but wouldn't cause a failure if it needed replacing. Also a good lead acid battery should last 10 years or so, if they are failing after a year either it was rubbish quality or the charging system is charging it wrong. Electronic ignition has around 500V between the CDI and coil, there are 1000's of volts going to a spark plug and has been for years.
 But the motor industry is full of motoring enthusiasts, and they aren't going to be like turkeys voting for Christmas and be too keen on  producing good electric vehicles while they are also threatened with a ban on ICE. The politics of "stick" rather than "carrot" can be counter-productive.