{"id":5048,"date":"2025-07-25T15:23:12","date_gmt":"2025-07-25T13:23:12","guid":{"rendered":"https:\/\/ecity.solarisbus.com\/?post_type=e-mobility&p=5048"},"modified":"2025-07-25T15:37:20","modified_gmt":"2025-07-25T13:37:20","slug":"iso-15118-the-communication-standard-between-bus-and-charger","status":"publish","type":"e-mobility","link":"https:\/\/ecity.solarisbus.com\/en\/e-mobility\/iso-15118-the-communication-standard-between-bus-and-charger","title":{"rendered":"ISO 15118 \u2013 the communication standard between bus and charger"},"content":{"rendered":"\n

ISO 15118 is a set of international standards that define how electric vehicles communicate with charging infrastructure. It simplifies daily operations, enhances safety, and enables smart fleet management as well as integration with the city\u2019s energy grid. A shared \u201clanguage\u201d between the vehicle and the charging station improves efficiency and coordination.<\/p>\n\n\n\n

Just like in a foreign language: to understand each other, you need to speak the same dialect and follow the same rules. Thanks to this, the entire charging process\u2014from connection, through automatic authorization, to intelligent power control\u2014can happen without any driver interaction. ISO 15118 defines what secure and automated \u201cnegotiation\u201d between devices should look like.<\/p>\n\n\n\n

Charging and communication<\/strong><\/h2>\n\n\n\n

ISO 15118 standardizes communication between the vehicle and charging station using PLC (Power Line Communication) technology, which transmits data over the power line. While it’s commonly said that data is sent “through the same wire,” in reality, during DC charging, separate conductors are used for power (+ and -) and communication (CP, PP, PE). This physical connection allows the vehicle to \u201cintroduce\u201d itself to the charger, and data is exchanged without additional cables or wireless networks.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

What exactly does ISO 15118 define?<\/strong><\/h2>\n\n\n\n

1. Handshake \u2013 initial exchange of information<\/strong><\/p>\n\n\n\n

Once connected, the bus and charger determine if they \u201cspeak the same language\u201d and jointly define:<\/p>\n\n\n\n

    \n
  • charging mode (AC\/DC),<\/li>\n\n\n\n
  • available power,<\/li>\n\n\n\n
  • operational parameters (battery level, desired charging end time, need for power limitation).<\/li>\n<\/ul>\n\n\n\n

    2. Plug & Charge \u2013 vehicle authorization
    <\/strong>The bus can send a digital certificate\u2014a kind of electronic ID key (known as Plug & Charge)\u2014to the station. The charger verifies it against a list of trusted devices. If verified, charging begins automatically\u2014no RFID cards, apps, or codes needed. The entire process is encrypted, much like online banking.
    Note: Plug & Charge is a relatively new technology and not mandatory for ISO 15118 compliance. It is currently more common in passenger vehicles.<\/p>\n\n\n\n

    3. Smart control and management
    <\/strong>Throughout the charging session, the vehicle and charger continue exchanging data:<\/p>\n\n\n\n

      \n
    • adjusting power output in real time,<\/li>\n\n\n\n
    • ending the session when target parameters are reached,<\/li>\n\n\n\n
    • reporting data to operator or depot systems.<\/li>\n<\/ul>\n\n\n\n

      4. Vehicle to Grid (V2G) \u2013 bidirectional energy flow
      <\/strong>In the latest version of the standard (ISO 15118-20), a bus can not only charge but also return energy to the grid. This function supports grid stability and helps balance power demand, e.g. during peak hours.<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      Why does it matter?<\/strong><\/h2>\n\n\n\n

      ISO 15118 increases user convenience while standardizing and automating communication between bus and charger. It enables:<\/p>\n\n\n\n

        \n
      • precise and secure vehicle identification,<\/li>\n\n\n\n
      • interoperability between different vehicles and chargers, regardless of manufacturer,<\/li>\n\n\n\n
      • simplified daily operations in depots,<\/li>\n\n\n\n
      • integration with smart energy grids.<\/li>\n<\/ul>\n\n\n\n

        This is a standard that truly supports the development of modern public transport\u2014automated, secure, and ready for the challenges of the future.<\/p>\n","protected":false},"excerpt":{"rendered":"

        ISO 15118 is a common language for information exchange between an electric vehicle and a charging station, streamlining communication.<\/p>\n","protected":false},"author":8,"featured_media":5041,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[31],"tags":[73,44,90,92,77,104],"class_list":["post-5048","e-mobility","type-e-mobility","status-publish","has-post-thumbnail","hentry","category-charging","tag-autobusy-elektryczne-en","tag-charging","tag-e-mobility-en","tag-electric-buses","tag-ladowanie-en","tag-systemy-wspomagania-en"],"acf":[],"yoast_head":"\nISO 15118 \u2013 the communication standard between bus and charger - eCity powered by Solaris<\/title>\n<meta name=\"description\" content=\"ISO 15118 is a common language for information exchange between an electric vehicle and a charging station, streamlining communication.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ecity.solarisbus.com\/en\/e-mobility\/iso-15118-the-communication-standard-between-bus-and-charger\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ISO 15118 \u2013 the communication standard between bus and charger - 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