Vehicle Battery Replacement Timing Using Deterioration Feedback
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Solution Overview
Problem
The reuse of used secondary batteries in vehicles is inefficient due to inadequate evaluation and management of battery deterioration, leading to low utilization and premature replacement.
Innovation Solution
A management apparatus that estimates the degree of battery deterioration based on usage history and notifies users or dealers of replacement timing, promoting the effective use of used batteries through a vehicle sales system that offers discounts for post-purchase battery replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery replacement is performed based on fixed time intervals or conservative thresholds, then battery reliability is maintained, but battery utilization efficiency deteriorates due to premature replacement
Solution Approach 1:
The system continuously monitors battery usage history and actual deterioration state, feeding this information back to dynamically adjust replacement timing. The notification unit sends alerts based on real-time deterioration assessment rather than fixed schedules, allowing batteries to be used until their actual end-of-life while maintaining reliability through continuous monitoring.
Solution Approach 2:
The system changes the parameter basis for replacement decision from fixed time intervals to dynamic deterioration state parameters. By monitoring usage patterns, charge cycles, temperature history, and calculated deterioration metrics, the system adapts replacement timing to actual battery condition, extending useful life while ensuring reliability.
2Measurement precision
If detailed monitoring and estimation systems are implemented to accurately assess battery deterioration, then measurement precision improves, but device complexity increases
Solution Approach 1:
The battery management system leverages data already being collected by the vehicle's existing battery management infrastructure. The estimator uses usage history automatically recorded during normal operation, eliminating the need for separate monitoring hardware. The system serves itself by processing its own operational data to assess deterioration and trigger notifications.
Solution Approach 2:
The management apparatus performs multiple functions using a unified system: it monitors battery parameters, estimates deterioration, determines replacement timing, and sends notifications. This multi-functional approach avoids the complexity of separate specialized systems while achieving accurate deterioration assessment through integrated data processing.
Data Source
AI summary
A server includes a management information DB that stores management information indicating whether or not each of a plurality of vehicles falls under a subject vehicle for which battery replacement timing is managed. An information processing apparatus of the server includes an estimator that estimates a degree of deterioration of a secondary battery mounted on the subject vehicle based on history information showing history of use of the secondary battery mounted on the subject vehicle and a notification unit that transmits a battery replacement alarm (a notification signal that gives a notification about battery replacement timing of the subject vehicle) when the estimated degree of deterioration of the secondary battery reaches a prescribed threshold value.