Battery Capacity Authentication for Secondary Battery Utilization
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Solution Overview
Problem
Conventional battery management systems for electric vehicles and similar mobile devices struggle to accurately assess the remaining chargeable capacity of secondary batteries, leading to inefficient use and premature replacement, as users cannot accurately determine the actual capacity or travel distance, and individual battery differences complicate deterioration management.
Innovation Solution
A battery management system that includes a battery status acquisition unit, a battery capacity authentication unit, and a management database to record identification and electrical characteristic data, allowing for accurate calculation and authentication of chargeable capacity, enabling appropriate battery usage based on deterioration and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the lower limit of chargeable capacity is set by the operation server based on number of charging times, then battery deterioration management is implemented, but users cannot grasp the actual chargeable capacity or travel distance leading to premature battery replacement
Solution Approach 1:
The patent implements a feedback mechanism where the management server continuously monitors electrical characteristic data (voltage, current, temperature) during charging and discharging operations, calculates actual chargeable capacity based on these measurements, and provides this information back to users through user terminals. This allows users to grasp the real-time actual chargeable capacity and travel distance of the battery, preventing premature replacement while still managing deterioration through the lower limit threshold system.
2Ease of operation
If secondary batteries with capacity above the lower limit are lent, then battery management is simplified, but batteries cannot be sufficiently utilized when only small amount of remaining electricity is needed
Solution Approach 1:
The patent introduces dynamic battery selection capability where the system can flexibly match batteries to user needs based on actual chargeable capacity measurements. The management server calculates the authentication capacity for each battery and allows lending decisions to be made dynamically based on both the lower limit threshold and the user's specific requirements. This enables the system to lend batteries with appropriate capacity levels - not always the maximum capacity batteries - thereby improving utilization efficiency while maintaining operational simplicity through automated capacity assessment.
3Measurement precision
If individual battery differences are considered for accurate capacity assessment, then chargeable capacity measurement precision is improved, but management complexity increases
Solution Approach 1:
The patent implements a self-service measurement system where each battery's electrical characteristic data (voltage, current, temperature) is automatically monitored during normal charging and discharging operations. The management server uses this data to calculate the chargeable capacity for each individual battery based on its specific characteristics and usage history. This automated approach achieves precise individual battery assessment without requiring complex manual testing procedures, as the system continuously gathers and processes data during regular battery operations.
Data Source
AI summary
A battery management system includes a battery status acquisition unit for acquiring, as secondary battery data, identification data that specifies and identifies the secondary battery and electrical characteristic data that indicates electrical characteristics of the secondary battery when connected, when charging or when discharging, a battery capacity authentication unit for calculating a chargeable capacity of the secondary battery based on the electrical characteristic data and authenticating the chargeable capacity as an authentication capacity and, a battery management database unit provided in the management server for recording the identification data in association with the authentication capacity, a user management database for recording user data related to a user of the secondary battery in association with the identification data, and a user data modification unit for modifying the association between the user data and the identification data.