EVSE Diagnostic Data Retrieval via Vehicle CAN Bus
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Solution Overview
Problem
Retrieving diagnostic data from electric vehicle supply equipment (EVSE) often requires specialized tools and partial disassembly, making the process cumbersome and inefficient.
Innovation Solution
Diagnostic data from EVSE is reported through an interface on the electrified vehicle using a CAN bus protocol, specifically converting pulse width modulated signals into diagnostic codes via the vehicle's controller, eliminating the need for specialized tools and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If specialized tools and partial disassembly are used to retrieve diagnostic data from EVSE, then diagnostic data can be retrieved, but the process becomes cumbersome and inefficient
Solution Approach 1:
The patent merges the EVSE diagnostic system with the vehicle's existing diagnostic infrastructure by integrating the EVSE controller into the vehicle's CAN bus network. This allows diagnostic data from the EVSE to be retrieved through the vehicle's standard OBD interface, eliminating the need for specialized tools and disassembly procedures.
Solution Approach 2:
The vehicle's controller acts as an intermediary between the EVSE and external diagnostic devices. It receives diagnostic data from the EVSE via the CAN bus and relays it to standard OBD scanners, serving as a mediator that translates between different diagnostic protocols and interfaces.
2Productivity
If specialized tools are used to retrieve diagnostic data from EVSE, then diagnostic information can be obtained, but time and resources are wasted
Solution Approach 1:
The system enables self-service diagnostics by allowing standard OBD scanners to retrieve EVSE diagnostic data through the vehicle's existing communication infrastructure. The EVSE controller automatically makes diagnostic data available through the CAN bus, eliminating the need for specialized retrieval tools and reducing diagnostic time.
3Loss of information
If EVSE is partially disassembled to retrieve diagnostic data, then internal diagnostic information can be accessed, but the process becomes more complex and time-consuming
Solution Approach 1:
The vehicle's OBD interface serves multiple functions: it provides diagnostic data from both the vehicle systems and the EVSE through a single standardized connection. This universal interface approach allows comprehensive diagnostic information to be accessed without physical disassembly of the EVSE.
Data Source
AI summary
An exemplary reporting method includes the steps of receiving diagnostic data from electric vehicle supply equipment, and then reporting the diagnostic data through an interface of an electrified vehicle. An exemplary electrified vehicle assembly includes a controller of an electrified vehicle. The controller is configured to receive diagnostic data from electric vehicle supply equipment. The exemplary assembly further includes an interface of the electrified vehicle configured to report the diagnostic data.