WLAN-UWB EV Charging Communication for ACD Pairing and Docking
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Solution Overview
Problem
Existing ISO 15118-based automatic connecting device (ACD) charging communication technologies are insufficient, requiring changes in message parameters and sequences, and necessitate vendor-specific element (VSE) additional information parameters for different ACD types, which complicates the charging process.
Innovation Solution
The proposed solution involves an ISO 15118-based charging communication method and apparatus that uses a wireless local area network (WLAN) and ultra-wide band (UWB) technology to establish a communication connection between the supply equipment communication controller (SECC) and the electric vehicle communication controller (EVCC), enabling docking, undocking, and pairing mechanisms, and defining new VSE additional information parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional ISO 15118-based ACD charging communication is used, then basic charging functionality is maintained, but message parameter changes and vendor-specific element parameters are required for different ACD types, complicating the charging process
Solution Approach 1:
The patent introduces a universal communication framework that can handle multiple ACD types (pantograph, underbody, sidearm) through a single standardized interface. The system uses a unified message structure with optional fields that adapt to different connection types, eliminating the need for separate vendor-specific parameter definitions for each ACD variant.
Solution Approach 2:
The patent modifies the ISO 15118 message parameters to include flexible,可扩展 fields that can accommodate different ACD types without requiring fundamental protocol changes. By introducing optional parameter fields and a standardized VSE information structure, the system allows parameter adaptation while maintaining overall message sequence consistency across different charging scenarios.
2Reliability
If separate vendor specific element parameters are defined for each ACD type, then specific charging requirements are met, but the charging communication system becomes more complex
Solution Approach 1:
The patent merges the communication protocols for different ACD types into a single unified framework. Instead of maintaining separate parameter sets for pantograph, underbody, and sidearm connections, the system combines them into one standardized protocol with optional fields that activate based on the specific connection type detected during the charging session.
Solution Approach 2:
The patent segments the communication protocol into mandatory core messages and optional type-specific extensions. The core protocol handles universal charging functions, while optional fields provide type-specific parameters only when needed, reducing overall system complexity while maintaining reliability for each specific ACD type.
Data Source
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AI summary
A charging communication method for charging electric vehicles, according to the present disclosure, comprises the steps of: establishing a communication connection by using a first communication technique between a SECC and an EVCC; initializing connection and pairing using a second communication technique between the SECC and the EVCC on the basis of information about the second communication technique; performing positioning and pairing between a primary assembly and a secondary assembly by using the second communication technique between the SECC and the EVCC; and performing docking, charging, and undocking between the primary assembly and the secondary assembly by using the second communication technique between the SECC and the EVCC.