EV Wireless Charging via NaN Packet Communication
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Solution Overview
Problem
The existing wireless charging infrastructure for electric vehicles (EVs) faces challenges in efficiently estimating wait times and determining compatibility between EVs and charging stations, as one-way communication via WiFi is insufficient for facilitating efficient charging processes.
Innovation Solution
Implementing packet communication through a Neighborhood Aware Network (NaN) for service discovery and negotiation between EVs and charging stations, allowing EVs to request reservations and compatibility information, and establishing connections for wireless charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If one-way communication via WiFi Neighbor Aware Network (NaN) is used for charging station broadcasts, then general information can be provided to vehicles, but efficient charging facilitation is insufficient
Solution Approach 1:
The patent implements bidirectional communication where EVs can send information requests and receive compatibility information in response. This feedback mechanism allows EVs to obtain specific compatibility details (vehicle classes supported, power capability, wait time) by requesting them, transforming the one-way broadcast into an interactive information exchange that resolves the contradiction between information completeness and charging efficiency
Solution Approach 2:
The patent uses WiFi NaN communication as an intermediary layer that enables service discovery and negotiation before establishing the actual charging connection. This intermediary communication channel allows EVs and charging stations to exchange compatibility information and negotiate reservations without requiring the full charging infrastructure to be active, improving efficiency while maintaining information completeness
2Reliability
If service discovery and negotiation are performed via NaN packet communication, then charging compatibility can be determined, but communication complexity increases
Solution Approach 1:
The patent segments the communication process into distinct phases: initial broadcast phase (charging station announces availability), service discovery phase (EV requests compatibility information), and negotiation phase (reservation establishment). This segmentation allows complex compatibility determination to be broken into manageable packet exchanges, reducing perceived complexity while maintaining reliability
Solution Approach 2:
The patent performs service discovery and compatibility negotiation as preliminary actions before establishing the actual charging connection. By determining compatibility through NaN packet communication in advance, the system avoids wasted connection attempts and ensures reliable charging setup, with the complexity paid off during the preliminary phase rather than during critical charging operations
Data Source
AI summary
A system and method of facilitating wireless charging of an electric vehicle (EV) include the EV performing service discovery and negotiation via a neighborhood aware network (NaN) to determine charging compatibility of a WiFi enabled charging station or another EV with the EV. The method also includes the EV requesting a reservation from the charging station or a charge from the another EV based on determining that the EV is compatible with the charging station or the another EV by broadcasting a request message that includes a packet with the request via the NaN.