Battery Control Device Abnormality Detection
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Solution Overview
Problem
Existing battery control devices face difficulties in distinguishing between persistent abnormalities and temporary noise influences, leading to inaccurate determination of battery states.
Innovation Solution
A battery control device that acquires measured values at regular intervals and uses counters to determine if the values are within a given range, with thresholds for determining abnormality based on the frequency of out-of-range occurrences, allowing for extended monitoring until the threshold is met or exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery control device uses a simple threshold comparison method to determine battery abnormality, then the determination process is simple and fast, but it cannot distinguish between persistent abnormalities and temporary noise influences
Solution Approach 1:
The system performs preliminary sampling of battery voltage multiple times before making a final abnormality determination. By acquiring voltage values at predetermined intervals and comparing them against thresholds, the system prepares multiple data points in advance to distinguish between temporary noise and persistent abnormalities, thereby improving detection accuracy without significantly increasing operational complexity
Solution Approach 2:
The system uses feedback by comparing each sampled voltage value against predetermined thresholds and using the results of previous comparisons to influence subsequent determination. The abnormality determination is based on the cumulative result of multiple comparisons, allowing the system to filter out temporary noise while maintaining a relatively simple determination process
2Measurement precision
If the battery control device samples voltage frequently to improve detection accuracy, then it can distinguish between persistent and temporary abnormalities, but the determination process becomes more complex and time-consuming
Solution Approach 1:
The system performs preliminary sampling of battery voltage multiple times before making a final abnormality determination. By acquiring voltage values at predetermined intervals and comparing them against thresholds, the system prepares multiple data points in advance to distinguish between temporary noise and persistent abnormalities, thereby improving detection accuracy without significantly increasing operational complexity
Solution Approach 2:
The system performs a predetermined number of voltage comparisons, which may be more than the absolute minimum needed for a single determination. This excessive sampling action ensures that temporary noise is filtered out while maintaining a systematic and manageable determination process that doesn't become overly complex
Data Source
AI summary
A battery control device includes an acquisition portion that acquires measured values on the battery state every predetermined period, and a determination processing portion that determines the battery state. The determination processing portion determines that the battery state is abnormal when the number of times the measured value is out of a given range reaches a threshold until the measured value is acquired a predetermined standard number of times. If the number of times the measured value is out of range is less than the threshold when the measured number is acquired the standard number of times, the determination of the battery state is performed for an extended period until the number of times the measured value is out of the range reaches the threshold, or until the measured number is within the range, based on the measured value acquired more than the standard number of times.