800-V Electric Vehicle Powertrains: Review and Analysis of Benefits, Challenges, and Future Trends

Two of the main challenges for electric vehicle (EV) adoption include limited range and long recharge times. Ultrafast charging can help to mitigate both these concerns. However, for typical 400-V battery EVs (BEVs), the charging rate is limited by the practical cable size required to carry the charging current. To reach ultrahigh charge rates of 350 or 400 kW, 800-V BEVs are a promising alternative. However, the design of an 800-V EV requires careful new considerations for all electrical systems. This article reviews the current state of 800-V vehicle powertrain electrical design and performs an analysis of benefits, challenges, and future trends regarding multiple vehicle powertrain components. Specifically, detailed benefits and challenges related to the battery, propulsion motor, inverter, auxiliary power unit, and on- and off-board chargers are discussed.

Automated summary

The adoption of 800-V battery electric vehicles (BEVs) can lead to higher charging rates, but also requires careful consideration for the design of all electrical systems. This article reviews the current state of 800-V vehicle powertrain electrical design and discusses the benefits, challenges, and future trends associated with multiple vehicle powertrain components.