4 ms·
Depends on the circuit. Most batteries' voltage are <5 volts in default configurations. You can move the voltage boost/serial circuitry segment to the engine ar
by ampdepolymerase 6y ago
Depends on the circuit. Most batteries' voltage are <5 volts in default configurations. You can move the voltage boost/serial circuitry segment to the engine area. It will waste a lot of material and create redundant wiring but the overall structural voltage will be low. Low voltage does not mean it would not catch fire however.
- extrapickles 6y agoHigh voltage battery packs are required due to the power required to move a car. A 50hp engine[1] needs ~37kW which at 5 volts, that is 7,500 amps of current, which requires comically large bus bars (~200x10mm) and conversion electronics. Even at 48 volts[2], you still need ~780 amps, which still requires very large conductors. At 400 volts, for the same motor, the wiring only needs to be sized for 100 amps, which is reasonably practical (think wire found on welders). [1]: Let assume that 50hp is the max required steady state output for a motor in a passenger car, and lets ignore any peak/dynamic loads and HVAC as this is napkin engineering [2]: 48v is generally accepted as the highest voltage before you really need to know what you are doing, though at these power levels, you still should know what you are doing as things like to weld, melt, become bad motors and/or explode.
- ampdepolymerase 6y agoYou are right. However, they do have the car's entire superstructure to work with.