SAE International’s SAE J2954 standard enables efficient wireless charging for light-duty EVs, achieving 93% efficiency at up to 11 kW. Read Ahead…
SAE International has introduced the SAE J2954 standard, detailing wireless power transfer (WPT) for light-duty electric vehicles (EVs). This standard supports wireless charging at up to 11 kW with 93% efficiency.
The Differential Inductive Positioning System (DIPS) ensures precise alignment using a low-intensity magnetic field from ground assemblies. DIPS technology allows vehicles to seamlessly pair with multiple ground assemblies and ensures accurate alignment in all weather conditions.
SAE J2954 Standard is a significant advancement, marking the first standardized automatic charging technology.
Dr. Mike Böttigheimer of MAHLE, a member of the SAE J2954 Standard Taskforce, emphasized the breakthrough in achieving scalability and mass production of wireless charging systems.
Features of SAE J2954 Standard
The key features of SAE J2954 standard for Light-Duty Electric Vehicles (EVs) include:
- Efficient Power Transfer: WPT with up to 11 kW and 93% efficiency.
- Precise Alignment: Uses DIPS for accurate vehicle alignment.
- Seamless Pairing: Vehicles automatically recognize and pair with multiple ground assemblies.
- Scalability: Paves the way for mass production of wireless charging systems.
Future light-duty EV models will benefit from automated charging with alignment, while dynamic wireless power transfer (WPT) will enable charging while vehicles are in motion. Dr. Andreas Wendt, co-chair of the Dynamic Power Transfer subteam, highlighted that DIPS could play a crucial role in this alignment.
In addition to the focus on light-duty EVs, the SAE WPT Taskforce is also working on high-power wireless charging for heavy-duty vehicles.
The upcoming SAE J2954/2 recommended practice will cover wire free charging at up to 500 kW for these larger vehicles.
The new SAE J2954 standard from SAE International represents a major step forward in the development and deployment of wire free charging technologies for electric vehicles, paving the way for more efficient, scalable, and user-friendly charging solutions across the industry.
Also Read: Introducing the World’s First Megawatt Charger for Electric Trucks
