EVSE Location Code Matching for ISO 15118-20 V2G Compliance
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Solution Overview
Problem
Existing technologies face challenges in enabling electric vehicles (EVs) to operate as generators, as they need to comply with various specifications and grid codes at different locations, which is complex and requires accurate location-specific information.
Innovation Solution
The system on an EV compares a received location code from an EVSE with a set of stored location codes, enabling bidirectional power transfer (BPT) only if the codes match, ensuring compliance with location-specific grid codes and regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the EV compares location codes to ensure compliance with grid codes, then the reliability of BPT operation is improved, but the device complexity increases due to additional communication and comparison operations
Solution Approach 1:
The EV receives and stores location codes from the EVSE in advance, before the BPT operation begins. This preliminary action allows the system to have location information ready for comparison, ensuring compliance checks can be performed immediately when needed without adding complex real-time acquisition systems.
Solution Approach 2:
The system implements a feedback mechanism where the EV compares its stored location codes with codes received from the EVSE during communication. This feedback loop ensures that the EV can verify its location compliance status and only proceed with BPT operations when the codes match, thereby improving reliability through continuous verification.
2Manufacturing precision
If the EV requires accurate location-specific information for generator operation, then the manufacturing precision of compliance verification is improved, but the loss of information increases due to additional data requirements
Solution Approach 1:
The patent extracts only the essential location identification information (location codes) from the complete set of possible location data. By taking out only the specific SubDivision code needed for compliance verification rather than transmitting all possible location details, the system achieves accurate compliance checking while minimizing information transmission requirements.
Solution Approach 2:
The system applies local quality by using specific location codes that are relevant only to the particular EVSE location and its associated grid codes. Rather than requiring comprehensive global location information, the EV stores and compares only the specific SubDivision codes pertinent to its operating location, reducing data requirements while maintaining verification accuracy.
Data Source
AI summary
The described technology is generally directed towards implementation of an electric vehicle (EV) as an energy generator for a vehicle to grid (V2G) power discharge operation. Energy available at a battery onboard the EV can be discharged to an electrical grid, e.g., via an electric vehicle supply equipment (EVSE)/wallbox. Location codes can be utilized to confirm the EV is able to perform a V2G operation at the EVSE. In the event of a location code of the EVSE matches a location code stored at the EV, the V2G operation can be performed. Communication(s) between the EV and the EVSE can be in compliance with (ISO) 15118-20 and can further comprise a ServiceDetailResponse message. A location code(s) can be is a SubDivision code generated in compliance with ISO 3166-2, and defining the location of the EVSE.