Battery Charge Discharge Management Using Use History Priority
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Solution Overview
Problem
Existing battery management systems for vehicle batteries fail to evenly distribute the burden of charge and discharge across multiple vehicles connected to a facility, leading to uneven wear and reduced product life for specific batteries.
Innovation Solution
A charge/discharge management apparatus that obtains use histories of multiple vehicle batteries and selects batteries for charge/discharge based on priority, averaging the use records to prevent localized burden and ensure fair utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery selection is based on traveling plan or similar criteria, then charge count reduction is achieved, but fairness among multiple vehicles is compromised and specific batteries bear disproportionate burden
Solution Approach 1:
The patent segments the battery selection process into two independent evaluation dimensions: use history (charge/discharge count) and traveling plan. By obtaining use histories from multiple vehicles and combining them with traveling plan data, the system creates a comprehensive selection criterion that distributes charge/discharge burdens more evenly across all vehicles while still achieving charge count reduction.
Solution Approach 2:
The patent changes the selection parameter from solely traveling plan-based to a composite parameter that includes both use history (charge/discharge count) and traveling plan. This parameter transformation enables the system to evaluate multiple vehicles holistically, selecting batteries that have lower cumulative use histories rather than those with favorable traveling plans alone, thereby improving fairness and extending battery life.
2Productivity
If specific vehicles are frequently selected as charge targets, then charge/discharge management efficiency is improved, but battery product life is reduced due to uneven wear
Solution Approach 1:
The patent implements a feedback mechanism by obtaining use histories (charge/discharge counts) from multiple vehicles and using this information to adjust future battery selection. The management apparatus continuously monitors cumulative use histories and prioritizes vehicles with lower counts for charge/discharge operations, creating a self-regulating system that automatically balances wear distribution while maintaining management efficiency.
Solution Approach 2:
The patent performs preliminary evaluation of use histories before making charge/discharge decisions. By pre-obtaining and analyzing cumulative charge/discharge counts from multiple vehicles, the system proactively identifies suitable candidates that will minimize additional wear, rather than making selections based solely on immediate traveling plans or availability.
Data Source
AI summary
A charge/discharge management apparatus for executing charge/discharge of a battery of a vehicle electrically connected to a facility, comprising an obtaining unit for obtaining use histories of a plurality of batteries corresponding to a plurality of vehicles electrically connected to the facility, and a selection unit for selecting a battery subjected to execution of charge/discharge from the plurality of batteries based on priority decided from the use histories.