EV Charging Reference Control for Nearby Vehicle Identification
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Solution Overview
Problem
Existing vehicle referencing systems struggle to accurately identify electrified vehicles connected to external charging and discharging devices when multiple devices are installed in close proximity, as position information alone is insufficient and charging and discharging states can be identical among vehicles.
Innovation Solution
A vehicle referencing system that utilizes connection information, position information, charging and discharging execution states, and remaining battery charge from both vehicles and charging stations to identify connected vehicles, and controls charging stations to differentiate states when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If position information alone is used to identify electrified vehicles connected to external charging and discharging devices, then the identification process is simple, but accurate identification cannot be achieved when multiple devices are installed in close proximity
Solution Approach 1:
The patent combines multiple types of information (connection information, position information, charging and discharging execution state, and remaining charge) to identify electrified vehicles. This merging of multiple information sources resolves the contradiction by maintaining identification accuracy while managing system complexity through integrated processing at the external control device.
Solution Approach 2:
The system dynamically changes parameters by introducing multiple variables (connection status, position coordinates, charging state, remaining charge levels) instead of relying on a single parameter. This allows accurate vehicle identification even when multiple charging devices are installed in close proximity, as the combination of parameters creates unique identification signatures.
2Loss of information
If charging and discharging execution state and remaining charge are used to identify electrified vehicles, then additional information is available for identification, but identification fails when these parameters are identical among multiple vehicles
Solution Approach 1:
The patent merges connection information and position information with charging and discharging execution state and remaining charge to create a comprehensive identification framework. This combination ensures that even when charging parameters are identical, the unique pairing of connection and position data maintains identification reliability.
Solution Approach 2:
The system adds spatial dimension (position information) and connection dimension (connection information) to the existing charging state parameters. This dimensional expansion creates a multi-dimensional identification space where vehicles can be uniquely identified even when their charging states overlap, resolving the reliability issue.
3Measurement precision
If multiple types of information are collected and processed to identify electrified vehicles, then identification accuracy improves, but system complexity increases
Solution Approach 1:
The external control device serves as an intermediary that centralizes the collection, processing, and correlation of multiple information types. This mediator approach simplifies the overall system architecture by consolidating complex processing logic in a single component rather than distributing it across multiple vehicles and charging devices.
Solution Approach 2:
The external control device performs multiple functions: it manages charging operations, collects information from vehicles and charging devices, processes identification logic, and controls charging/discharging states. This multi-functionality reduces the need for separate specialized components, managing system complexity while maintaining high identification accuracy.
Data Source
AI summary
Electrified vehicle connected to external charging and discharging device is identified by referencing various information acquired from electrified vehicle with various information acquired from the external charging and discharging device. Thus, even when a plurality of external charging and discharging devices are installed in a close range, electrified vehicles connected to the external charging and discharging device can be appropriately identified. Also, when determining that the external charging and discharging device and the remaining charge in at least two electrified vehicle among electrified vehicle connected to the charging and discharging execution state are the same, the external charging and discharging device is controlled so that the charging and discharging execution state is different between electrified vehicles. Thus, electrified vehicles connected to the external charging and discharging devices can be appropriately identified, even when the charging and discharging execution state and the remaining charge of the electrified vehicles are the same.