市场部 - Mr Poker

DB31/T 1296-2021, Technical Requirements for Smart Charging and Interactive Response of Smart Electric Vehicle Charging Points, was first issued by the Shanghai Municipal Administration for Market Regulation on March 16, 2021, and took effect on August 1, 2021.

Led by the Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., the standard specifies applicable scenarios, general requirements, smart-charging requirements, interactive-response requirements, and platform-interaction requirements for smart charging and interactive response by smart electric vehicle charging points. It applies to smart charging points that need to regulate the charging power supplied to electric vehicles, including smart AC charging points and smart off-board chargers.

The standard was jointly drafted by 18 upstream and downstream industry organizations, including the Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., State Grid Shanghai Municipal Electric Power Company, Tesla (Shanghai) Co., Ltd., and Mega-Senway Electronic Technology Ltd., Shanghai (Mega-Phase).

Under the general requirements in Section 5.5, smart AC charging points should provide Type A + DC 6mA smooth DC or Type B residual current protection. Note: The technical requirements and test method for 6mA smooth DC leakage current refer to Section 9.9 of IEC 62955:2018.

AC charging points contain numerous electrical devices and more complex circuit topologies. Their systems may contain AC, pulsating DC, pulsating DC superimposed on smooth DC, pure DC, and certain high-frequency residual currents. The Type AC residual current monitoring used in the past is far from sufficient to meet safety requirements.

Mega-Senway MastCurr® Series residual current detection modules are based on the magnetic modulation principle and specialized algorithms for identifying residual current waveforms. Highly integrated, accurate, reliable, sensitive, modular, and customizable, they support charging-point detection solutions for multiple residual current types, including AC, pulsating DC, smooth DC, two-phase rectified, three-phase rectified, and multi-frequency composite waveforms.

As a leading provider of residual current detection solutions, Mega-Senway has served more than 20 well-known new energy vehicle brands and more than 40 well-known charging-point manufacturers, with cumulative shipments exceeding 2 million pcs, placing it in a leading industry position.
China is now the world’s largest charging-point market. As charging infrastructure is built at scale and the charging-point industry faces electrical challenges, Mega-Senway has consistently pursued R&D and innovation. It has developed a complete set of residual current protection solutions for the charging-point industry, accelerating the standardized development of charging facilities, ensuring the safety and reliability of charging-point equipment, and protecting electrical safety.

Related information: Type B leakage current, Type B residual current, IC-CPD, A+6 leakage current, A+6 residual current, MC00, Type B, European-standard residual current protection, U.S.-standard residual current protection, onboard leakage current detection