Secondary Battery Evaluation for Second-Life Application Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems lack an efficient method to evaluate the relative adaptation of secondary batteries for different secondary use places, such as vehicles and stationary storage, considering factors like deterioration, climate, and usage frequency, which affects their remaining life and suitability for specific applications.
Innovation Solution
An evaluation apparatus and method that assesses secondary batteries' adaptation to secondary use places by analyzing present output, deterioration, and predicted decrease, using a control unit to calculate maximum output at expiration or minimum required output times, and display relative degrees of adaptation based on user input and battery information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If secondary batteries are reused in different applications without evaluation, then battery utilization rate increases, but reliability of battery selection for specific applications deteriorates
Solution Approach 1:
The evaluation apparatus performs preliminary evaluation of secondary batteries before assigning them to specific applications. It calculates predicted maximum output at expiration and minimum required output times in advance, allowing batteries to be pre-screened and matched to appropriate uses before actual deployment, thus ensuring reliability while maintaining high utilization rates
Solution Approach 2:
The system uses feedback from battery performance data (present output, degree of decrease, deterioration information) to continuously improve selection accuracy. By comparing actual battery performance with predicted values and using this feedback to refine evaluation criteria, the system ensures reliable battery-appointment matching while maximizing utilization of available batteries
2Measurement precision
If comprehensive battery evaluation is performed for each application, then battery selection accuracy improves, but device complexity increases
Solution Approach 1:
The evaluation apparatus segments the complex evaluation process into distinct functional units: an acquisition unit that collects battery data, a calculation unit that computes predicted maximum output and minimum required output, and an evaluation unit that determines adaptation degree. This segmentation allows comprehensive evaluation while keeping each component's complexity manageable and the overall system structured
Solution Approach 2:
The evaluation apparatus is designed as a universal system that can assess secondary batteries for multiple different applications using the same core evaluation methodology. By creating a multi-functional evaluation platform that handles various battery types and applications through a unified approach, the system achieves high evaluation accuracy without proportionally increasing complexity
3Measurement precision
If detailed battery information is collected and analyzed, then evaluation precision improves, but loss of time in data processing increases
Solution Approach 1:
The system performs preliminary calculations of predicted maximum output at expiration and minimum required output times before final evaluation. By pre-processing and organizing battery data (present output, degree of decrease, deterioration information) and computing key metrics in advance, the system reduces the time needed for final evaluation while maintaining high precision through comprehensive data analysis
Data Source
AI summary
An evaluation apparatus acquires present output information and degree of decrease information for each secondary battery as well as minimum output information for secondary use place and expiration period information for each application, and, in a case where an expiration period is defined for an application of a secondary use place, calculates a maximum output for each secondary battery at a time when the expiration period ends, and uses the calculated maximum output to evaluate a relative degree of adaptation of a plurality of secondary batteries to the application.