According to the "Safety Technical Requirements for Chargers for Electric Bicycles" and "Technical Requirements for Safety of Chargers for Electric Bicycles" and other national standards (draft for approval), the new national standard specifications for electric bicycle chargers and plugs have been officially exposed. Electric bicycle new national standard unified charging interface

        Guangdong SED Industrial Co., Ltd. is a connector enterprise integrating R&D, production and sales. SED has a one-stop connector and wire harness overall solution from connector research and development, design, mold development, injection molding, assembly molding, wiring custom wire harness, and supports connector customization and plug wire harness customization.

        On July 1, 2023, SED will officially put into production the new national standard plug for electric bicycles. Welcome to consult and place an order, and support one-stop wiring custom plug lines.

        The voltage and charging algorithm of the lead-acid battery and the lithium-ion battery are completely different, so two types of plugs are designed.

        Electric bicycle new national standard plug: lead-acid battery plug 2+2, lithium-ion battery charging plug 2+4

        The national standard of the new national standard charger for electric vehicles mainly has two requirements:

        (1) The charging port must conform to the national standard.

        (2) It must meet the EMC standard and have delay protection.

The new national standard plug abandons the old direct plug-in charging interface, and classifies the interfaces of lead-acid batteries and lithium-ion batteries to avoid misuse.

         The voltage and charging algorithm of lead-acid batteries are completely different from those of lithium-ion batteries, so the new national standard has designed two types of plugs, which are physically incompatible to avoid misuse. The lead-acid battery plug adopts the form of two power pins and two communication pins (2+2), while the lithium-ion battery adopts the form of two power pins and four communication pins (2+4).

         The unified charging interface of the new national standard for electric bicycles will improve the chaos in the industry. The problem of uncommon interfaces for different brands of electric bicycles will become a thing of the past. It is even possible to share chargers to save money and be more environmentally friendly. In addition to the charging interface, the mandatory use of the communication protocol is also a highlight of the new national standard. In addition to the power cells, the charger cable also has a communication signal core for the battery pack handshake. It does not make any output before the handshake, effectively preventing Mixed use of different voltage chargers, excessive charging, and overcharging problems reduce the risk of fire.