SAE standardizes J1772 fast DC charging up to 100 kW

by admin on 18 October 2012

J1772 AC/DC combo

In May this year several US and German car manufacturers agreed an extension to the J1772 charging standard providing both AC and DC charging using the same connector, a revised J1772 connector with two large additional DC pins below the existing AC / signal line connector.  This new design has now been ratified as a standard by the Society of Automobile Engineers (SAE) and may now begin to appear in both vehicles and chargers (likely in 2013).  DC charging provides for up to 500 V with a maximum current of 200 A (up to 100 kW), or around 20 minutes for a full charge.


Press release

SAE INTERNATIONAL RELEASES NEW FAST-CHARGING "COMBO" COUPLER STANDARD (SAE J1772) FOR PLUG-IN EV & ELECTRIC VEHICLES

SAE International’s much-anticipated technical standard for plug-in hybrid electric vehicle (PHEV) and electric vehicles (EV) has been approved and published.

Developed in a consensus environment by more than 190 global experts representing automotive, charging equipment, utilities industries and national labs, “J1772™: SAE Electric Vehicle and Plug in Hybrid Electric Vehicle Conductive Charge Couple” enable charging time to be reduced from as long as eight hours to as short as 20 minutes.

“This new technical standard is a real game-changer,” Andrew Smart, Director of Industry Relations and Business Development for SAE International, said. “It reflects the advancements in technology within PHEV and EV engineering and we are pleased to represent the collaborative efforts within industry that made it possible.”

The standard represents the future of charging technology and smart grid interaction, while addressing the needs of today. Such needs include reduced times at public charging stations, enabling consumers to travel greater distances in their PHEV’s and EV’s.

“This new standard reflects the many hours that top industry experts from around the world worked to achieve the best charging solution – a solution that helps vehicle electrification technology move forward.” Gery Kissel, Engineering Specialist, Global Battery Systems, GM, and SAE J1772™ Task Force Chairman, said. “We now can offer users of this technology various charging options in one combined design.”

The original version of  J1772™ defined  AC Level 1 and AC Level 2 charge levels and specified a conductive charge coupler and electrical interfaces for AC Level 1 and AC Level 2 charging. The new revision incorporates DC charging where DC Level 1 and DC Level 2 charge levels, charge coupler and electrical interfaces are defined. The standard was developed in cooperation with the European automotive experts who also adopted and endorsed a combo strategy in their approach.

Click here to see the J1772™ SAE Charging Configurations and Ratings Terminology.

 

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