GB/T 27930-2023 English PDF (GBT27930-2023)

This document specifies the definitions and requirements of the controller area network (CAN)-based communication physical layer, data link layer, transport layer, application layer, between the off-board conductive charger and #39;s (hereinafter referred to as and quot;charger and quot;) equipment communication controller (SECC) and electric vehicle communication controller (EVCC). This document applies to the communication -- between the charger or the charger and amp; discharger using charging mode 4 and the electric vehicle. It also applies to the communication -- between the charger or charger and amp; discharger and the electronic control unit of the electric vehicle with charging control function. Electric vehicle communication controllers include but are not limited to battery management systems (BMS), as well as in-vehicle systems that need to communicate with the charger to achieve other special functions. Chapters 5 ~ 11 of this document apply to the charging system, which is specified in Appendix B of GB/T 18487.1-2023 (hereinafter referred to as ¡°category A system and quot;. Chapters 101 ~ 106 apply to the charging system, which is specified in Appendix C of GB/T 18487.1-2023, as well as the charging and amp; discharging system, which is defined in Appendix E (hereinafter referred to as and quot;category B system and quot;). and quot;Vehicle and quot; in this document specifically refers to ¡°electric vehicle¡±..