Engineering company Bosch has started the production of new electric motors and inverters based on 800 V technology for fast recharging of EVs.
The 800 V inverter uses silicon carbide (SiC) semiconductors, which deliver reduced heat loss and increased electrical conductivity, efficiency and EV range. The 800 V electric motor produces 830 Nm torque and 460 kW power output. Bosch says the new I-pin bar winding technology delivers 35% more power density compared to 400 V systems—60 kW/liter—along with torque density of 105 Nm/l.
By providing double the voltage of standard systems, the new technology allows for thinner cables to save on space, weight and copper. The next generation of the electric motor will feature oil cooling to better draw away the heat generated and ensure consistent operation over long distances, as well as in commercial vehicles, the company said.
“Our 800-volt technology is the next step toward more powerful electrical powertrains and shorter recharging times,” says Ralf Schmid, Executive VP of Bosch’s Powertrain Solutions division.