A 22kW EV charger is an electric vehicle (EV) charging station that provides up to 22 kilowatts (kW) of power for charging EVs. It is classified as a Level 2 charger in most regions, and its charging speed makes it a popular choice for residential and commercial installations. Below is a breakdown of the benefits.
Benefits of 22kW EV Chargers
Faster Charging Speeds
A 22kW EV charger delivers Level 2 charging at three-phase power, significantly reducing charging times compared to 7kW chargers. It can add approximately 60–70 miles of range per hour, fully charging most EVs in 3–4 hours.
Ideal for Multi-Vehicle Locations
For locations with multiple electric vehicles, 22kW chargers allow efficient rotation of charging sessions, ensuring all vehicles are ready when needed. This is particularly advantageous for families or shared properties with multiple EVs.
Suitable for Commercial and Fleet Use
Businesses, shopping centers, and fleet operators benefit from the speed and scalability of 22kW chargers. Faster turnaround times mean higher customer satisfaction and increased operational efficiency for fleets.
Enhanced Flexibility and Compatibility
Modern 22kW chargers support a wide range of EVs and can be equipped with both tethered and untethered options. This adaptability ensures compatibility with future EV models, making it a long-term investment.
Smart Features for Optimized Charging
Many 22kW chargers include smart technology, such as app control, dynamic load balancing, and integration with renewable energy systems like solar panels. These features help users manage energy consumption efficiently.
Environmentally Friendly
By enabling faster and more efficient charging, 22kW chargers reduce idle energy waste and promote the adoption of electric vehicles, contributing to lower carbon emissions overall.
Revenue Opportunities
For businesses, offering 22kW charging as a service can create a revenue stream through pay-per-use models. It also attracts EV drivers, increasing foot traffic to commercial properties.
Key Features of 22kW Chargers
High-Speed Charging
A standout feature of 22kW chargers is their ability to deliver three-phase power, allowing them to charge EVs up to three times faster than 7kW chargers. This significantly reduces downtime, offering 60–70 miles of range per hour depending on the vehicle.
Three-Phase Power
Unlike single-phase chargers, 22kW models use three-phase power, providing consistent and efficient energy transfer. This feature is especially beneficial for commercial and industrial setups.
Smart Technology Integration
Modern 22kW chargers come equipped with smart features such as:
- App-Based Monitoring and Control: Manage charging schedules and monitor energy usage remotely.
- Dynamic load balancing: Distribute power efficiently to avoid overloading the grid.
- Renewable Energy Integration: Connect to solar power systems for sustainable charging.
Compatibility with a Wide Range of EVs
22kW chargers are typically equipped with Type 2 connectors, ensuring compatibility with most electric vehicles. They are versatile enough to accommodate future EV models with varying charging capacities.
Tethered and Untethered Options
Users can choose between chargers with built-in cables (tethered) or sockets (untethered), providing flexibility for different preferences and vehicle types.
Advanced Safety Features
Key safety mechanisms ensure secure charging, such as:
- Overcurrent and overvoltage protection
- Temperature monitoring to prevent overheating
- IP-rated designs for protection against dust and water.
Scalability
These chargers are ideal for growing infrastructure needs. Businesses and fleet managers can install multiple units to scale operations while maintaining efficiency.
Installation Requirements
Installing a 22kW EV charger involves careful planning and adherence to technical and regulatory standards. Here are the key requirements:
Three-Phase Power
A 22kW charger requires a three-phase electrical connection. This type of connection provides more consistent and higher power than single-phase systems. While commonly available in commercial and industrial properties, it may not be standard in residential homes, necessitating an electrical upgrade.
Adequate Supply Capacity
The existing electrical system must have sufficient capacity to handle the additional load without overloading the supply. Most installations require a dedicated circuit for the charger.
Physical Installation Requirements
Location
- Chargers should be installed in a sheltered area to protect them from extreme weather conditions, even if they are rated for outdoor use (e.g., IP65-rated chargers).
- Proximity to the parking space is critical, with considerations for cable length to ensure ease of use
Wall-Mounted or Standalone
- Choose between wall-mounted chargers (suitable for homes or garages) or standalone pedestals (common in public or fleet areas) based on the property type
Use Cases for 22kW Chargers
Commercial
Businesses use 22kW chargers to attract customers and provide an additional revenue stream through pay-per-use charging.
Fleet Operations
Fleet managers rely on 22kW chargers for rapid charging, ensuring minimal downtime and efficient vehicle use.
Professional Installation
Qualified Electricians
22kW chargers must be installed by certified electricians familiar with EVSE (Electric Vehicle Supply Equipment). They ensure compliance with local electrical codes and safety standards.
Load Management Systems
For multi-charger setups, a load management system may be required to distribute power efficiently, especially in commercial and fleet operation.
Electrical Protection Measures
Circuit Breaker and Residual Current Device (RCD)
The installation must include a properly rated circuit breaker and an RCD for safety against overcurrent and electrical faults. These devices protect both the charger and the electrical system.
Surge Protection
Surge protectors may be recommended or required depending on local regulations to prevent damage to the charger from voltage spikes.
Comparing 22kW to 7kW Chargers
The key differences between 22kW and 7kW chargers primarily involve charging speed and power supply requirements. Here’s a breakdown:
Charging Speed
7kW Charger:
- Time to charge: A typical EV with a 60kWh battery takes about 8-10 hours to fully charge from empty.
- Best for overnight charging or places where vehicles are parked for extended periods.
22kW Charger:
- Time to charge: The same 60kWh battery would take about 3-4 hours to fully charge.
- Ideal for faster turnaround times, such as workplaces or public charging stations.
Power Supply Requirements
7kW Charger:
- It requires a single-phase electrical supply, which is common in most residential homes.
- Easier and cheaper to install.
22kW Charger:
- It requires a three-phase electrical supply, which may not be standard in residential areas and can involve significant costs to upgrade the electrical system.
- More suitable for commercial or industrial locations.
