Optimizing public electric vehicle charging

As a society, do you want to see more electric cars on the roads? What do you need to think about buying an electric car? If you take the conventional wisdom, the one thing we need to improve is public charging stations for electric vehicles. Until now, charging an electric car at home has been a fairly simple process.

Summary:In the evening, the driver plugs the car into an outlet, where - the driver wakes up the next morning with a full charge. While most of the time charging takes place at home, we're seeing more and more charging at workplaces.

And now we're finally seeing more public charging stations scattered across the urban landscape. While it's easy to charge an electric car at home, the process of charging at public charging stations is much more complicated. In many cases, you need to read the authorization card and other instructions before you start charging. Worst of all, different public charging stations often require different cards.

Intelligent charging is ahead of its time, and great strides have been made in this area Telemotive Intelligent Charging (TIC) is a new approach to modernizing electric vehicle charging stations TIC uses Power Line Communication (PLC), a technology that allows electric vehicles to charge at one station without requiring cards.transceiver communication with Internet services that provide authentication, payment and other convenient services.

What's really interesting about TIC is that the charging cable itself transmits data. So now we have real-time contact between the car and the charging station. This approach opens up new possibilities for users and drivers. These features make the request complete, convenient, secure and as smart as possible.

Telemotive smart charging does not require RFID or smartphone authentication. On the contrary, secure communication and payment transactions are automatic.

How it achieves this: TIC works in accordance with ISO 15118 and DIN 70121. The application complies with the recommendations of the Motor Industry Software Reliability Association (MISRA). The entire package is then integrated into AUTOSAR. In this case, TIC is integrated into the Mentor Volcano VSTAR AUTOSAR stack. The integration of these two technologies provides the critical software infrastructure needed by OEMs and third-party suppliers to create electronic control units (ECUs), ushering in a new era of intelligent electric vehicle charging.

Connecting the vehicle to the grid Indeed, a number of technologies are involved here.

It is important to understand that ISO 15118 is divided into three parts (ISO 15118-1, -2 and-3). The first document (ISO 15118-1) defines use cases for public and private charging infrastructure scenarios. Here, specific use cases are determined by charging infrastructure providers and vehicle manufacturers.

The second document (ISO 15118-2) defines the core Telemotive Intelligent Charging products. In this area, the communication protocol acts as a communication stack and is expanded to ISO-OSI levels 3 through 7. Here you will find familiar protocols such as TCP/IP version 6, User Datagram Protocol (UDP) and even Transport Layer Security (TLS). However, pay attention to new protocols designed specifically for smart charging. For example, the stack consists of a transport protocol known as Vehicle-to-Grid Transport Protocol or V2GTP. There is also a very clever compression algorithm called Efficient XML Interchange (EXI). It reduces the size of transferred data to about 4% of the original XML data size.

In addition, 17 types of messages, so-called application-level messages, are defined, allowing the charging process to be adapted to the specific needs of the user/driver.

At the lower level of ISO-OSI, ISO 15118-3 defines the physical connection, where power line or Green PHY communication functions. Mentor's AUTOSAR product is used.

The need for reliable and proven software for electric vehicles is growing every day. In addition, the charging methods for these vehicles must evolve with the advancement of vehicle technology. Today's public charging stations for electric vehicles need to be informed by more convenient, faster and safer charging methods. There are no exceptions.

Telemotive's intelligent charging solution, together with Autosar ECU integration, provides the user/guide with a seamless connection between the charging station and the vehicle via the charging cable, thereby creating a real connection between the vehicle and the charging station.OEM manufacturers and third party suppliers are making little effort to be able to offer their customers smart, sustainable technology for safe, comfortable and hassle-free electric vehicles, regardless of the route the user/driver chooses.