The SAE standard J1772 charging connector for plug-in vehicles passed another threshold on its way to finalization this week. Underwriters Laboratories has completed its certification testing on the connector developed by Yazaki. The UL testing has verified the safety and durability characteristics of the 5-pin connector. Virtually all of the automakers from the U.S., Japan and Europe are planning to use the standard plug on upcoming electric and plug-in hybrid vehicles, including in the Chevy Volt.

The plug supports both charging and two way communications and is designed to survive at least 10,000 connection and disconnection cycles. Now that the UL testing has been completed, the standard specification will be put to a vote of the SAE committee in July. The standard defines physical and performance characteristics for both electrical and mechanical behavior so that other companies can build compatible connectors and vehicle sockets.

[Source: Society of Automotive Engineers]

SAE International Standard to Define Electric-Vehicle Charging Coupler

WARRENDALE, Pa., June 23, 2009 -

SAE International is finalizing a standard that will define an electric-vehicle charging system and coupler for widespread public use.

Standard J1772TM, "SAE Electric Vehicle Conductive Charge Coupler," spells out the general physical, electrical and performance requirements for the coupler, which consists of a connector and vehicle inlet. The purpose of the standard is to define a common electric-vehicle charging network, which will reduce costs and increase convenience for owners of electric vehicles.

"By standardizing, you're reducing costs and allowing everyone to use the same connector. All of the charging equipment you would pull up to in public would have identical connectors, so any vehicle could use one. It will be a consistent, reliable interface," said Gery Kissel, Chair of the SAE Hybrid J1772 Task Force, in an interview with SAE International's Automotive Engineering International magazine.

The coupler has passed testing by Underwriters Laboratories for safety and durability.

Standard J1772 was developed by the SAE Hybrid Standards Committee in cooperation with the Japanese Automotive Research Institute. The standard will go out for ballot to committee members in July.

SAE International is a global association of more than 121,000 engineers and related technical experts in the automotive, aerospace and commercial-vehicle industries. SAE International's core competencies are life-long learning and standards development. SAE International's charitable arm is the SAE Foundation, which supports many programs, including A World In Motion® and the Collegiate Design Series.

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