Vehicle Charging Database Updates via Car2X Status Messages
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Solution Overview
Problem
Existing methods for updating charging station databases in vehicles are laborious and inefficient, as they often require manual entry and do not account for real-time updates from charging infrastructure that may not be connected to the internet.
Innovation Solution
A method utilizing Cooperative Awareness Messages (CAM) and Car2X interfaces to automatically update a vehicle's charging device database by sending request messages and receiving status messages from nearby charging stations, allowing real-time database updates without requiring constant network connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual entry methods are used to update charging station databases, then database accuracy can be maintained, but the labor intensity and time consumption increase significantly
Solution Approach 1:
The system enables charging stations to automatically transmit their own status information (availability, power output, pricing) to vehicles without human intervention. The vehicle's database updates itself by receiving messages from charging stations, eliminating manual data entry while maintaining accuracy through direct source data transmission.
Solution Approach 2:
The vehicle continuously receives status messages from charging stations and automatically updates its database based on this feedback. This real-time feedback mechanism ensures the database remains accurate and current without requiring manual verification or entry, resolving the contradiction between accuracy and time consumption.
2Loss of information
If charging stations are required to be connected to the internet for database updates, then real-time data can be obtained, but the system complexity and cost increase
Solution Approach 1:
The vehicle itself acts as an intermediary that directly receives status messages from charging stations via short-range communication. This eliminates the need for charging stations to be connected to the internet or central servers, as the vehicle collects data directly from the source through simplified wireless communication protocols.
Solution Approach 2:
The patent extracts the database update function from the charging station and places it in the vehicle. The vehicle now performs the data collection and storage functions locally, removing the requirement for charging stations to have internet connectivity or complex network infrastructure, thereby reducing system complexity while maintaining real-time data availability.
3Measurement precision
If comprehensive database updates are performed frequently, then data accuracy improves, but the energy consumption and processing load increase
Solution Approach 1:
The system performs database updates periodically based on received status messages from charging stations rather than continuously. The vehicle updates its database when triggered by incoming messages, which occurs periodically as vehicles pass by charging stations, thereby reducing energy consumption and processing load compared to continuous updates while maintaining data accuracy.
Data Source
Figure 1~2
AI summary
The invention relates to a method for creating and updating a database (DB) for charging devices (4), wherein the database (DB) is stored in a motor vehicle (1) or can be retrieved by the motor vehicle (1), wherein the motor vehicle (1) sends out request messages (7), wherein a charging device (4) receives the request message (7) and sends out a status message (8), wherein the status message (8) contains at least the location of the charging device (4), wherein the motor vehicle (1) receives the status message (8) and compares it with the database (DB), wherein the charging device (4) is entered into the database (DB) with its location if it was not previously entered in the database (DB), and a motor vehicle (1).