Vehicle Battery Charge Display with Error-Corrected Travel Distance
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Solution Overview
Problem
Users of vehicles equipped with batteries experience anxiety due to inaccurate information about battery charge levels, which can indicate component deterioration, leading to uncertainty about remaining travel distance.
Innovation Solution
An information provision device and system that includes a charge amount determination unit, minimum remaining travel distance calculation unit, and display control unit to display charging equipment information within a calculable distance based on error information, reducing user anxiety by providing accurate travel distance estimates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the battery charge amount is displayed to the user, then the user can monitor the battery status, but the user experiences anxiety due to inaccurate information about battery charge levels and component deterioration
Solution Approach 1:
The patent changes the parameter representation from simple charge amount to a range-based minimum remaining travel distance that incorporates error information. This transforms the single parameter (charge level) into a more comprehensive parameter (distance range considering errors) that better reflects actual battery status and reduces user anxiety about accuracy
Solution Approach 2:
The system provides feedback to the user by displaying charging equipment information within the calculated minimum remaining travel distance range. This feedback mechanism helps users understand the relationship between battery status, travel distance, and available charging infrastructure, thereby building trust in the information provided
2Device complexity
If the system calculates remaining travel distance without considering error information, then the calculation is simple, but the result does not account for sensor accuracy errors and battery deterioration
Solution Approach 1:
The patent applies preliminary action by pre-defining error information (sensor accuracy errors and battery deterioration rates) that can be used in the minimum remaining travel distance calculation. This prepares the calculation framework in advance, allowing the system to account for various error sources without making the real-time calculation excessively complex
Solution Approach 2:
The system introduces additional parameters (error margins, lower limit values) into the calculation to transform a simple distance calculation into a more accurate minimum remaining travel distance calculation that reflects real-world uncertainties in sensor measurements and battery performance
3Ease of operation
If the system displays charging equipment information within minimum remaining travel distance, then users can locate nearby charging equipment, but the system must process and display multiple pieces of information
Solution Approach 1:
The patent applies local quality by focusing the display on charging equipment specifically within the minimum remaining travel distance range, rather than displaying all available charging equipment. This localized approach provides users with relevant information without overwhelming them with excessive data, balancing ease of operation with manageable complexity
Data Source
AI summary
An information provision device and an information provision system that can reduce user anxiety when the charge amount of a battery has decreased are provided. A vehicle 100 is provided with a charge amount determination unit 611 that determines whether a charge amount of a battery 40 is less than a predetermined threshold; a minimum remaining travel distance calculation unit 613 that calculates a minimum remaining travel distance on the basis of error information for the vehicle 100 when the charge amount of the battery 40 is less than the predetermined threshold; and a display control unit 616 that displays, on a display unit 64 of a display device 60, charging equipment information related to charging equipment 300 present within a distance that can be traveled to in accordance with the minimum remaining travel distance.