Vehicle Charging Control Using Departure-Based Target SOC
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle charging systems face usability issues when users need to manually set the charging completion state of charge (SOC) for timer charging, especially when the scheduled departure time changes, which can be time-consuming and inefficient, and do not adequately consider the changing usage state of the battery.
Innovation Solution
A vehicle charging system that automatically sets the charging target state of charge based on historical usage data, using a reference time and reference SOC derived from departure time patterns, reducing the need for user input and ensuring the SOC is set appropriately for the battery's usage state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the user manually sets the charging completion SOC each time, then the charging plan can be precisely controlled, but the time and effort of the user increases
Solution Approach 1:
The charging control device automatically determines the charging completion SOC based on stored usage state information and charging state information, without requiring manual user input. The system serves itself by using its own stored data to make charging decisions, thereby eliminating the time and effort users would otherwise spend on manual setting while maintaining appropriate charging precision
Solution Approach 2:
The system pre-stores usage state information and charging state information in advance, so that when timer charging is needed, the charging completion SOC can be immediately determined from this pre-stored data without requiring real-time user input or calculation
2Stability of the object's composition
If the charging completion SOC is fixed based on normal departure time, then the charging habit is maintained, but the system cannot adapt to changed departure times
Solution Approach 1:
The charging control device dynamically adjusts the charging completion SOC based on the actual scheduled departure time input by the user. Instead of using a fixed SOC value, the system modifies the charging target according to the specific departure time requirements, allowing the charging plan to adapt flexibly to different scenarios while maintaining the core charging habit patterns stored in memory
3Ease of operation
If the charging completion SOC does not consider battery usage state changes, then the setting process is simple, but the charging plan becomes inappropriate for actual battery needs
Solution Approach 1:
The system uses stored usage state information and charging state information as feedback to automatically determine the charging completion SOC. This feedback mechanism ensures that the charging plan is appropriate for the actual battery needs by continuously referencing historical data about how the battery is used and charged, without complicating the user setting process
Data Source
AI summary
The input device receives an input operation regarding the scheduled departure time. The setting unit sets a charging target SOC. The charging control unit controls charging of the power storage device so that SOC thereof becomes the charging target SOC by the scheduled departure time. The storage device stores information on the result of the departure time of the vehicle and information on the setting history of the charging target SOC in association with each other. The setting unit statistically processes the information stored in the storage device to obtain a reference time, which is an estimated value of the departure time, and a reference SOC, which is an estimated value of the charging target SOC. The setting unit sets the charging target SOC by changing the reference SOC in accordance with a time difference between the scheduled departure time and the reference time received by the input device.