Our mission is to be your trusted navigator through the dynamic landscape of ZEV. We'll illuminate their policies with crystal-clear explanations, ensuring you understand the principles that guide their operations. Moreover, we'll unveil the thrilling innovations that make ZEV a trailblazer in its field. Get ready to discover the cutting-edge technologies that set them apart, and understand how these advancements shape not only their products but potentially the industry as a whole.

info@zevhelp.com

Shopping cart

Subtotal $0.00

View cartCheckout

Welcome to ZEV Help! Your Guide to Zero-Emission Commercial Vehicles

What to know about Charging

  • Home
  • What to know about Charging

AC vs. DC charging

AC Charging

  • AC power comes direct from the power grid
  • The car’s onboard charger converts the AC to DC for battery storage
  • Onboard chargers are typically smaller and handle lower power for slower charging (usually overnight)

DC Charging

  • DC fast chargers convert AC grid power to DC at the station itself
  • The DC power then flows directly to the battery, bypassing the car’s converter
  • This enables much faster charging due to the use of larger and more powerful converters at the station

Electric Flow Details

Power Source

Both AC or DC charging, the starting point is the electricity grid. The power grids deliver AC power. 

AC Charging Path

  • For AC charging, the AC power travels from the grid to the charging station
  • The car’s onboard charger converts the AC to DC for battery storage
  • The converted DC power charges the EV battery
    • All batteries store DC electricity

DC Charging Path

  • For DC charging, the AC power travels from the grid to the charging station
  • A powerful DC converter within the station converts the AC to DC for fast charging
  • The high-voltage DC power directly charges the EV battery and bypasses the car’s onboard converter

Additional Details

Charging Curve

  • AC charging delivers a flat charging curve due to limitations of the onboard charger
  • DC charging has a decreasing curve – the battery accepts more power initially, then tapers off as it gets full

Applications

    • AC charging is ideal for home or workplace charging (slower but convenient)
    • DC fast charging is used where a fast turnaround is needed for long-distance travel

Reference:  ATRI- Charging Infrastructure Challenges for the U.S. Electric Vehicle Fleet