German and US car makers agree on DC extended J1772 charging standard

by admin on 9 May 2012

J1772 DC combo

Last year we reported that the European Automobile Manufacturers Association (ACEA) were proposing a combined AC/DC EV charging connector and standard.  That appears to have come to fruition at the Electric Vehicle Symposium with the new SAE standard AC/DC connector and charging standard which promises charge times as short as 20 minutes (high power DC).  This new standard has been agreed by the big German and US car makers (Audi, BMW, Chrysler, Daimler, Ford, General Motors, Porsche and Volkswagen) but leaves them at odds with Nissan and Toyota who have both championed (and utilized) the Japanese CHAdeMO DC charging standard (typically 50-60 kW output).  This new standard enables charging up to 500 V with a maximum current of 200 A (up to 100 kW), connectors should appear on cars in 2013.

Press release

Global Automakers to Demo EV Fast Charging at EVS26

J1772 DC combo

Combined Charging System allows AC and DC fast-charging from single inlet port

Global automakers from the United States and Germany will demonstrate fast-charging technology that will enable the recharging of most electrified vehicles with compatible systems in as little as 15-20 minutes.

Audi, BMW, Chrysler, Daimler, Ford, General Motors, Porsche and Volkswagen have agreed to support a harmonized single-port fast charging approach – called DC Fast Charging with a Combined Charging System – for use on electric vehicles in Europe and the United States.

Live charging demonstrations will be conducted during the Electric Vehicle Symposium 26 (EVS26) May 6-9.

The combined charging system integrates one-phase AC-charging, fast three-phase AC-charging, DC-charging at home and ultra-fast DC-charging at public stations into one vehicle inlet. This will allow customers to charge at most existing charging stations regardless of power source and may speed more affordable adoption of a standardized infrastructure.

The International Society of Automotive Engineers (SAE) has chosen the Combined Charging System as the fast-charging methodology for a standard that incrementally extends the existing Type 1-based AC charging. The standard is to be officially published this summer. ACEA, the European association of vehicle manufacturers has also selected the Combined Charging System as its AC/DC charging interface for all new vehicle types in Europe beginning in 2017.

The charging system design was based on collaborative reviews and analysis of existing charging strategies, the ergonomics of the connector and preferences of U.S. and European customers. The system was developed for all international vehicle markets and creates a uniform standard with identical electrical systems, charge controllers, package dimensions and safety mechanisms.

The system maximizes capability for integration with future smart grid developments through common broadband communication methods regardless of the global location of the charging system. The combined charging approach will reduce development and infrastructure complexity, improve charging reliability, reduce the total cost-of-ownership for end customers and provide low maintenance costs.

Commercially available combined charging units are projected to be available later this year. All committed OEMs have vehicles in development which will use the Combined Charging System.  The first vehicles to use this system will reach the market in 2013.