Recommendations for Minimum Required Diagnostics Information for Electric Vehicle Charging Infrastructure

Technical Report · Wed Jan 08 00:00:00 EST 2025

DOI:https://doi.org/10.2172/3013587· OSTI ID:3013587

Montezzo Coelho, Maria Eduarda ^[1]; Varghese, Benny J. ^[1]; Savargaonkar, Mayuresh ^[1]

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1. Idaho National Laboratory (INL), Idaho Falls, ID (United States)

The rapid growth of electrified transportation, including light- and medium-duty electric vehicles (EVs) as a mobility solution requires a reliable EV charging infrastructure. To advance charging reliability, the ChargeX Consortium reports “Recommendations for Minimum Required Error Codes for Electric Vehicle Charging Infrastructure” and “Implementation Guide for Minimum Required Error Codes in Electric Vehicle Charging Infrastructure” have provided recommendations for a set of minimum required error codes (MRECs), their functional and responsibility classifications, and a guide for their implementation using OCPP versions 1.6J and 2.0.1. These reports outline a recommended practice for consistent error reporting and interpretation, which is essential for communicating issues uniformly across the complex and diverse EV charging ecosystem. However, MRECs are just one part of diagnosing issues, another critical part is obtaining enough information about the current state and performance of the various charging components to identify root causes for each of the error codes. This additional diagnostics data can be used by technicians or automated systems to understand the context around an issue, allowing for timely resolution, decreased maintenance costs, and increased charging reliability. During everyday operations, data is regularly collected and analyzed across the ecosystem. Although sharing of all that available data would be great for diagnostics, concerns on data ownership, privacy, and OEM intellectual property pose a challenge. To overcome this obstacle, this report proposes a set of Minimum Required Diagnostic Information (MRDI) and recommends that the industry implement these uniformly across the North American EV charging ecosystem. MRDI provides a means to exchange only data deemed necessary for root cause determination.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 3013587
• Report Number(s): INL/RPT--25-82628
• Country of Publication: United States
• Language: English

Related Subjects

32 - ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ChargeX Consortium
Electric Vehicles
Minimum Required Diagnostic Information