As electric vehicles (EVs) become an integral part of our daily lives, the need for more efficient and rapid charging solutions to meet our everyday charging requirements is crucial. Among the common choices for home EV chargers, the 7kW and 22kW AC EV chargers are preferred by many EV owners. In this comprehensive guide, we will explore from technical specifications to assessing their suitability for home charging, delving into both the household 7kW AC charger and the 22kW charger.
Understanding the 7kW AC EV Charger:
The 7kW AC EV charger is a reliable and widely used residential charging solution. With a power output of 7 kW, these chargers are known for their versatility and compatibility with standard single-phase power supplies, bringing efficiency and reliability to residential charging, which makes them a convenient home charging solution.
How Fast Does a 7kW Charger Charge?
For EV drivers, the charging speed of a 7kW EV charger may be considered slow, but it adequately meets daily needs. The charging time of a 7kW charger is influenced by various factors, including the vehicle’s battery capacity and charging efficiency. On average, it can provide around 20-30 miles of range per hour. A 7kW charger may take approximately 6-8 hours to fully charge a vehicle with a battery capacity between 40-60 kWh. While not the fastest option, it is well-suited for scenarios with longer dwell times, such as overnight charging.
22kW AC EV Charger:
In contrast, the 22kW AC EV charger is a high-power AC charger. 22kW chargers are typically used in commercial and public charging stations to cater to drivers in need of faster charging speeds. Designed for three-phase power, 22kW chargers offer a more robust solution for high-traffic areas and workplaces.
The charging speed of a 22kW charger is significantly faster, providing approximately 60-70 miles of range per hour. This makes them an attractive choice for drivers with a need for quick turnaround times and higher demands for fast charging.
Three-phase power supply was mentioned above, so what is single-phase power supply and what is three-phase power supply?
Single-Phase Power:
Single-phase power systems provide electrical energy through a single phase connected to the power grid. In this system, the current circulates between two conductors—a hot wire and a neutral wire. Due to having only one phase, single-phase power is mainly used for low-power and household applications, such as residential and small commercial settings. It is suitable for general household appliances, lighting, and light-duty electric devices. However, its limitations may restrict its use in high-power and industrial applications, typically found in relatively smaller-scale scenarios.
Three-Phase Power:
Three-phase power systems provide electrical energy through three connected phases. In this system, the current circulates among three conductors, forming three separate phases. This configuration results in a smoother current flow, reducing voltage fluctuations and enhancing the efficiency of the power system. Three-phase power is primarily used in commercial and industrial applications, offering higher power output suitable for large electric devices, motors, and other high-power requirements. Its stability and efficient power transmission make it an ideal choice for meeting large-scale power needs, particularly in industrial manufacturing and large equipment operations.
Which is better for my home, a 7kw electric car charger or a 2kw electric car charger?
If your EV charging capacity is low, your home has a single-phase supply and your daily charging needs can be met by overnight charging, then a 7kW charger may be a practical and economical option. However, if you have a higher capacity EV that requires faster charging and your home infrastructure supports it, then a 22kW charger may be a worthwhile investment. Always consult an electrician or EV charger wholesaler to ensure compatibility and compliance with local regulations.
Joint: Choosing the Right Home EV Charger
As a leading EV charger maker, Joint is committed to providing user-friendly and efficient home charging solutions. Joint’s 22kW AC EV chargers offer a more robust solution for high-traffic areas and workplaces. For instance, the Joint EVC27 has a maximum power of 22kW, with app control, appointment charging features, and the ability for users to check charging data and address issues through the app.
Conclusion:
Choosing between a 7 kW or 22 kW AC EV charger depends on user charging needs and electrical infrastructure. A detailed understanding of each charger’s capabilities empowers EV owners to make informed decisions based on their lifestyles and preferences. If you are looking to purchase a home EV charger or customize an EV charger, feel free to contact Joint. As a professional EV charger manufacturer, Joint is dedicated to combining cutting-edge technology with innovative charging solutions, making it easy for users to charge at home.
