EV Charging Pairing Using WLAN and UWB Positioning
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Solution Overview
Problem
Existing electric vehicle charging protocols, such as ISO 15118, lack sufficient message sequencing and vendor-specific element parameters for automatic connection devices, leading to inefficiencies in positioning and pairing between electric vehicles and charging equipment.
Innovation Solution
A charging communication method utilizing a combination of wireless local area network (WLAN) and ultra-wide band (UWB) technologies to enable the discovery, positioning, and pairing of electric vehicle supply equipment, enhancing the communication process through multiple communication schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single communication protocol (ISO 15118) is used for electric vehicle charging, then the system is simple to implement, but it lacks sufficient message sequencing and vendor-specific element parameters for automatic connection devices
Solution Approach 1:
The patent combines multiple communication protocols (ISO 15118, WLAN, UWB) into a unified charging communication system. The protocol selection module selects appropriate protocols based on charging scenarios, merging their capabilities to achieve both versatility and managed complexity through intelligent protocol orchestration
Solution Approach 2:
The communication system is designed with multi-functionality to support multiple protocols (ISO 15118 for general charging, WLAN for positioning, UWB for precise pairing) within a single platform. This universal design allows the system to adapt to different charging scenarios while maintaining a unified architecture
2Productivity
If existing protocols are used without modification, then implementation is straightforward, but positioning and pairing between electric vehicles and charging equipment is inefficient
Solution Approach 1:
The system performs preliminary positioning using WLAN before establishing the charging connection. This preliminary action of location verification and vehicle-charging equipment pairing using multiple protocols streamlines the subsequent charging process, improving overall productivity while maintaining ease of operation through automated multi-protocol coordination
3Measurement precision
If multiple communication technologies are integrated, then positioning and pairing efficiency improves, but the system complexity increases
Solution Approach 1:
The communication system is segmented into specialized modules: ISO 15118 for charging control, WLAN for positioning and discovery, and UWB for precise pairing. Each protocol handles specific tasks, improving measurement precision for positioning and pairing while managing complexity through functional segmentation and a centralized protocol selection module
Data Source
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AI summary
A charging communication method for charging an electric mobility, according to the present disclosure, comprises the steps of: discovering, by an EVCC, a first electric vehicle supply equipment (EVSE) within a range by using a first communication technology; obtaining, by the EVCC, information for positioning the electric mobility to a charging location for being supplied with power from the first EVSE by using the first communication technology; and performing, by the EVCC, a communication connection with a supply equipment communication controller (SECC) of the first EVSE, by using a second communication technology.