Energy Vehicle Charging Technology: Key Terminology Explained

Recent Posts
California Drivers Express Concern with Lack of EV Charging Stations
ASEAN Sustainable Energy Week 2024
Russia's Increased Investment in Electric Vehicle Charging Infrastructure
The Rise of EV Charging Stations in Nigeria
The Need for Increased EV Charging Infrastructure
Chinese Enterprises Shine at the Smarter E Europe Exhibition
Energy Vehicle Charging Technology: Key Terminology Explained

As electric vehicles (EVs) continue to rise in popularity, understanding the technology behind charging systems becomes crucial. Whether you own a plug-in hybrid electric vehicle (PHEV) or a battery electric vehicle (BEV), knowing the basics of how your vehicle charges can enhance your user experience and ensure proper maintenance. This blog aims to demystify the terminology used in EV charging technology.

Charging Systems: Basic Concepts

AC Charging (Alternating Current)

AC charging involves using alternating current to recharge the battery system of new energy vehicles. The vehicle’s onboard charger converts AC from the electric grid into direct current (DC) to meet the battery’s requirements. Most household vehicles use this method.

Check out our AC Charging Stations.

DC Charging (Direct Current)

DC charging means the vehicle receives direct current directly into its battery system, with the charging voltage regulated at the charging station. This method is typically faster than AC charging and is often used for commercial vehicles.

Check out our DC Charging Stations.

CCID (Charging Circuit Interrupting Device)

The CCID is an embedded safety device within the charging cable. If any leakage is detected from the vehicle, the CCID interrupts the electric flow between the vehicle and the charging cable to prevent accidents.


A charger refers to the device that converts AC into DC for charging purposes. There are two types of chargers: onboard chargers, which are installed within the vehicle, and off-board chargers, which are part of the External Electric Vehicle Supply Equipment (EVSE).

Charge Connector

Commonly known as the charging gun, the charge connector is plugged into the vehicle’s charge port to initiate charging. In North America, chargers typically conform to the SAE J1772 standard, which outlines the connector’s shape, circuit, and communication protocol.

Charging Port or Inlet

This is the electrical socket located on the EV, usually behind a protective cover. The technical standards of the charging port must match those of the charge connector to facilitate charging.

Charging Cable

A portable charging accessory used with level 1 AC charging, it connects one end to the vehicle and the other to a standard 220V wall socket.

Charging Station

A fixed installation that delivers electric energy to PHEVs and BEVs. These are typically found in residential garages, workplaces, parking facilities, or public areas. Charging stations vary in complexity from simple outlets to sophisticated units accommodating multiple vehicle types and charging standards.

Safety Tips

  1. Fueling and Charging: Never refuel your vehicle while it is connected to a high-voltage battery charger. Maintain a safe distance from flammable materials to prevent accidents.
  2. Operations During Charging: Do not perform any operations related to the high-voltage system while the vehicle is charging. This includes activities that may interfere with the vehicle’s cooling systems, such as the electronic fan or electric water pump.
  3. Professional Handling Only: Only qualified electrical professionals should handle charging cables, EV supply equipment, and charging stations to ensure safety and compliance.


Understanding these terms not only helps you operate your EV more efficiently but also ensures you can maintain it properly over its lifespan. As EVs become more prevalent, familiarizing yourself with the nuances of EV technology will enhance your experience and safety.

Leave a Reply

Your email address will not be published. Required fields are marked *