Battery Management Verification Using Cross-Unit Statistical Comparison
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Solution Overview
Problem
Existing battery management systems face challenges in accurately determining abnormal behavior and ensuring the integrity of battery management functions, particularly when failures occur, due to the difficulty in distinguishing between normal and abnormal operations across different battery management apparatuses with varying main boards.
Innovation Solution
The proposed solution involves a battery management method and apparatus that selects a function to be verified, transmits input information to counterpart battery management apparatuses, calculates statistic values based on execution and reference battery information, and determines abnormalities. If an abnormality is detected, substitute battery information is calculated and used to maintain function integrity, ensuring continuous operation by referencing a verification order table and selecting counterparts based on response speed and identification information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If battery management apparatuses with different main boards are used to manage batteries, then device complexity and adaptability are improved, but measurement precision and reliability of abnormal behavior detection deteriorate due to inconsistencies in determining normal versus abnormal operations
Solution Approach 1:
The patent changes the parameter of comparison from raw execution results (which vary across different main boards) to standardized statistical values (mean, standard deviation) that normalize the data. This allows consistent abnormal behavior detection regardless of the specific main board implementation, resolving the contradiction between adaptability and measurement precision.
Solution Approach 2:
The patent introduces statistical analysis (mean and standard deviation calculations) as an intermediary layer between the diverse execution results from different main boards and the final abnormal behavior determination. This intermediary standardizes the comparison process, enabling reliable detection across varied hardware implementations.
2Reliability
If multiple battery management apparatuses are used for redundant monitoring, then reliability is improved, but device complexity increases due to additional monitoring and verification mechanisms
Solution Approach 1:
The patent uses multiple battery management apparatuses as redundant copies that perform the same monitoring functions. Each apparatus independently monitors battery functions and compares results with others, providing fault tolerance without requiring complex centralized control mechanisms.
Solution Approach 2:
The patent implements feedback mechanisms where each battery management apparatus shares its execution results with others, and the system continuously monitors for inconsistencies. This feedback loop enables automatic detection and reporting of abnormalities while maintaining manageable system complexity through standardized communication protocols.
3Measurement precision
If statistical analysis is performed on execution results to detect abnormalities, then measurement precision is improved, but loss of time increases due to additional calculation steps
Solution Approach 1:
The patent performs statistical analysis (calculating mean and standard deviation) on a selective basis - primarily when verification is needed or when inconsistencies are suspected. This partial application of statistical analysis maintains measurement precision where required while minimizing time loss during normal operations.
Data Source
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AI summary
Disclosed is a battery management method and apparatus that selects a function to be verified from functions of the battery management apparatus (110-1,110-n), transmits input information used to obtain an execution result information of the selected function to at least one counterpart battery management apparatus (110-1,110-n), receives, from the counterpart battery management apparatus, reference battery information that is generated by the counterpart battery management apparatus (110) based on the input information, and determines whether an abnormality is present in the selected function based on the execution result information and the received reference battery information.