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FEV Supports Automakers with Charging Compatibility Analysis

OEMs need to identify and address potential issues with public charging units before releasing vehicles to the market. FEV, says it supports this work scope by analysing BEVs' operational effectiveness at the entire variety of AC and DC charging stations.

As competitiveness spirals in the Battery Electric Vehicle (BEV) market, and each year more OEMs bring new BEVs in the market, the importance of infrastructure to support these vehicles on the road increases. Where and how do consumers charge these vehicles in their daily life? Can they reliably charge them without issues? OEMs need to address and answer these questions for their customers to facilitate the wide-spread adoption of BEVs.

With its Mobile Charging Analyzer, FEV can provide in-depth charging communication and power evaluation as part of vehicle level benchmark capabilities. The analyser allows for flexible testing at various locations, and real-time measurement of all signal parameters via Control Pilot and PLC (power line communication), which records the communication between the charging station and the vehicle.

Examples for measurement capabilities with the Mobile Charging Analyzer include:

  • Measurement of AC and DC voltages and current

  • Recording of the on-board charger (OBC) in the same log file for further Analysis

  • High-resolution waveform analysis via oscilloscope

"The vehicle charging benchmark from FEV can support different levels of detail with the right equipment for every use case," said Andreas Sehr, Director Electronics & Electrification at FEV. "In-depth fault analysis of electrical and communication signals by FEV charging experts provides the status of vehicle compatibility with different charging stations, which is extremely beneficial to increase consumer confidence before the market entry of a vehicle."

A complete charger compatibility campaign includes elements such as:

  • Efficient route planning

  • Test planning for charging events based on standards or FEV templates tailored to customer Needs

  • Support vehicle instrumentation to supplement charging analyser measurements

  • Various levels of measurement equipment from break-out box to advanced setups with the Mobile Charging Analyzer

  • Engineering support for root cause analysis and solution finding in case of compatibility issues

FEV's Mobile Charging Analyzer has broad technical specifications for AC and DC voltage, and control pilot requirements. It acts as the "man in the middle" between the vehicle and public charging stations, synchronising logging of the vehicle CAN messages to compare and provide oscilloscopic waveform data to analyse grid and CP waveforms. Supported standards include ISO 15118, IEC 61851, DIN 70121, SAE J1772 for testing in Europe, Oceania and North America. Asian standards, such as GB/T and CHAdeMO are supported. FEV says with its in-depth experience in developing charging components and software, the complete range of measuring, identifying, and solving charging compatibility issues can be provided.

In its most recent charging analysis project, FEV completed compatibility testing on various charging stations from 26 different charging manufacturers. Even with standardisation requirements of charging stations, the communication of those units was quite different, so field testing is needed. End-users want reliability and peace of mind, not only at the time of their BEV purchase. Safety, effectiveness, usability, and availability of public charging stations are of great importance while assessing the vehicle's lifetime value.

Continued simulation and real-life testing of various climate situations, charge times, and hardware are critical to bridge the gap between current BEV technology for consumers and general wide-spread adoption.

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