What is ISO 15118?
The communication interface that electric vehicles (EVs) use to communicate with charging infrastructure is defined by the globally accepted ISO 15118 Fast Charging standard. Its main purpose is to enable “Plug and Charge” capabilities, allowing EVs to automatically commence and authenticate charging sessions without extra hardware or software.
All EVs are covered by this standard, including plug-in hybrid electric cars (PHEVs) and battery electric vehicles (BEVs). The reliability, convenience, and security of EV charging are made possible by ISO 15118, which is a crucial part of the infrastructure of smart grids.
In addition to Plug and Charge, ISO 15118 allows dynamic pricing, which lets charging station operators modify charges according to the availability of renewable energy, grid demand, and time of day. The standard also incorporates safe authentication and authorization procedures to prevent unwanted access to EV charging systems.
How Does It Work?
When an EV establishes a physical link with a charging station, the ISO 15118 process begins. The EV and charging station use digital certificates to verify each other’s identities to provide a safe connection. Upon successful identification, information about the EV, including its preferred charging method, energy requirements, and desired features, is shared with the charging station.
Afterward, the EV and charging station negotiate the charging settings, including the charging power, timing, and payment methods. The charging session starts once the parameters are established, and the station powers the EV according to the conditions specified while keeping an eye out for any problems or modifications that may be needed. Based on the selected payment method, the charging station generates a billing record at the end of the session.
ISO 15118 Components
1. Understanding the Fundamentals
- Examine all of ISO 15118’s sections to familiarize yourself with its key components.
- The definition of key concepts, use cases, and basic standards that serve as the basis for standardization is mostly the responsibility of ISO 15118-I.
- Learn about the variables that affect load management, charging, and payment options.
2. Needs for Networks and Protocols
- The network and application protocol standards are detailed in ISO 15118-2.
- Examine ISO 15118-3 in greater detail to learn about the physical and data link layer prerequisites for efficient communication.
3. Testing for Conformance
- Use ISO 15124 to conduct network and application protocol conformance tests that comply with ISO standards.
- Through conformance testing, verify the physical and data link layers to ensure compliance with ISO 15118-3.
4. Wireless Communication Considerations
- For information on wireless communication by the second edition of the international standard, see ISO/DIS 15118-6.
- Examine ISO 15118-7, which is now part of ISO/DIS 20, and describe the network and application protocol standards for mobile communication.
- The physical layer and data connection requirements for wireless transmission are described in full in ISO 15118-0.
5. Protocols of the Second Generation
To find out more about the precise criteria for application protocols on second-generation networks, consult ISO 15118-20.
6. Applications beyond Electric Vehicles
- Examine the use of ISO 15118 fast charging in heavy-duty vehicles, such as automated guided vehicles in harbors and public transportation.
- Experts advise users to apply ISO 1548-8 to commercial wireless communication operations, but they should do so with caution as operational uptime issues may develop.
7. Addressing Communication Gaps
- Analyze how ISO 15118 defines internal vehicle communication about devices other than the Supplied Equipment Communication Controller (SECC).
- Recognize that while we handle unique use cases separately, we exclude everything outside of the SECC and message exchange methods from the purview of the standard.
8. Reducing Wireless Difficulties
- When utilizing ISO 15118-8 for wireless communication, especially in professional settings, proceed with caution.
- Use the approved ISO 15118-3 methodology for charging passenger EVs to avoid issues with operational uptime.
Benefits ISO 15118
1. Plug and Charge
EV owners can easily connect their car to a compatible charging station by using Plug & Charge. Secure communication via the ISO 15118 Fast Charging protocol makes this possible, enabling automatic, behind-the-scenes authentication and billing. As a result, the charging process becomes seamless and more convenient for users.
2. ISO 15118’s Contribution to Enhanced User Convenience
ISO 15118 facilitates intelligent and effortless communication between electric vehicles and charging stations. Through this standard, EVs can share key data, such as charging parameters, power needs, and preferences, with stations. As a result, charging becomes more efficient, reducing both energy waste and charging times.
3. Facilitating Vehicle-to-Grid Integration
ISO 15118 Fast Charging makes Vehicle-to-Grid (V2G) technology possible, allowing EVs to both take power from and return excess energy to the grid. In addition to improving energy storage, balancing grid capacity, and stabilizing the system, this bidirectional energy transfer may also present EV owners with income prospects.
4. Ensuring Secure Communication
To ensure safe communication between electric vehicles (EVs) and charging stations, ISO 15118 implements robust security mechanisms. Specifically, by using digital certificates for authentication, the standard builds trust between both parties while also preventing tampering or unauthorized access. Furthermore, this approach safeguards EV owners’ privacy and security from potential cybersecurity threats.
5. Unlocking the Benefits of Bidirectional Charging
Acknowledge how ISO 15118 offers flexibility, especially regarding bidirectional charging, where your electric car exchanges energy in the other direction with the grid. Vehicle-to-Grid (V2G) and Vehicle-to-Home (V2H) are two popular methods.
Here, your electric car serves as a reactive power bank, offering a practical way to keep the grid balanced during overload situations. With the help of charging stations, EVs can function as a reliable power source and return electricity to the grid. This makes storing extra electricity possible and using it at a different station later on. Make use of this cutting-edge technology to boost energy efficiency and grid stability.
Applications Beyond Passenger EVs
Heavy-Duty Vehicles
Public Transport
- Explore Public Transport Integration: Heavy-duty electric buses and passenger EVs use ISO 15118 Fast Charging, enabling improved connectivity between infrastructure and charging systems in public transport.
- Improve Efficiency: Complying with ISO 15118 standards simplifies charging methods, enabling enhancements to public transportation networks.
Automatic Guided Vehicles in the Harbor
- Facilitate Automated Operations: They also expand the applicability of ISO 15118 to marine environments, specifically in the area of guided vehicle automation.
- Enhance Charging Processes: ISO 15118 guarantees standardized communication, which not only makes charging electric forklifts and other smart vehicles easier but also enhances reliability.
Conclusion:
To sum up, implementing ISO 15118 Fast Charging is essential to having a flawless EV charging experience. It encourages standardization and ensures compatibility. Its bidirectional charging capabilities also guarantee safe operations and allow grid connectivity.
With Dorleco’s Fast-Charging Solutions, which are supported by ISO 15118 compliance and guarantee smooth and effective charging experiences, you can stay ahead of the EV revolution. Discover our cutting-edge EV products, which include CAN Keypads, CAN Displays, and VCUs, all of which are intended to improve the performance of your car. Furthermore, management and integration are now simpler than ever thanks to our hassle-free EV software services. For cutting-edge car technology that keeps you going forward, put your trust in Dorleco!