Battery Ultrasonic Anomaly Detection Using Operating Zone Mapping
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Solution Overview
Problem
Current battery management systems fail to account for a comprehensive range of parameters in ultrasonic acoustic signals, limiting their ability to detect anomalies and optimize battery performance, safety, and durability, especially considering the evolution of battery characteristics over time.
Innovation Solution
A method using a battery management system with an acoustic transmitter and receiver to emit and receive controlled ultrasonic signals, analyzing these signals to determine the battery's operating zone, allowing for real-time anomaly detection and corrective actions, and incorporating a mapping system to define normal, risky, and dangerous operating zones based on signal characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If short ultrasonic pulses (less than 0.1 ms) are used for battery characterization, then measurement time is reduced, but steady state cannot be established within the battery limiting analysis capability
Solution Approach 1:
The patent applies dynamics by transitioning from static short pulses to dynamic continuous or long-duration ultrasonic signals that allow the battery to reach a steady state. This enables the system to adapt the signal duration based on the need to establish steady-state conditions for more comprehensive mathematical analysis while still maintaining efficiency through optimized measurement protocols.
Solution Approach 2:
The patent changes the temporal parameter of the ultrasonic signal from short pulses (less than 0.1 ms) to continuous or long-duration signals. This parameter change allows the battery sufficient time to reach a steady state, thereby improving measurement precision and analysis capability without necessarily increasing the overall measurement time through optimized signal processing.
2Device complexity
If manufacturer-provided general guidelines are used for battery management parameters, then device complexity is reduced, but adaptability to individual battery characteristics and aging evolution is lost
Solution Approach 1:
The patent implements self-service by enabling the battery management system to automatically characterize individual battery properties through ultrasonic measurements and adapt management parameters accordingly. The system performs self-diagnosis and self-optimization, eliminating the need for complex external configuration while improving adaptability to each battery's unique characteristics and aging evolution.
Solution Approach 2:
The patent applies feedback by continuously monitoring battery characteristics through ultrasonic measurements and using this information to dynamically adjust management parameters. This closed-loop approach allows the system to adapt to individual battery characteristics and aging without requiring complex pre-programming, balancing simplicity with adaptability through real-time information feedback.
3Measurement precision
If comprehensive acoustic signal analysis is performed to detect all battery parameters, then measurement precision is improved, but device complexity and computational requirements increase
Solution Approach 1:
The patent applies extraction by selectively isolating and analyzing specific acoustic signal characteristics that are most relevant to particular battery parameters. Instead of processing the entire acoustic signal comprehensively, the system extracts only the necessary features for each measurement objective, thereby improving measurement precision for specific parameters while reducing overall device complexity and computational requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables more accurate and timely detection of battery anomalies, improving performance, safety, and extending battery life by identifying potential issues before they become critical, and reducing memory requirements compared to prior art.
Implementation Method 1
an acoustic transmitter configured to be fixed to a wall of the battery, said acoustic transmitter being fixed to a wall of the battery during the implementation of the method
Implementation Method 2
an acoustic receiver configured to be fixed to a wall of the battery, said acoustic receiver being fixed to a wall of the battery during the implementation of the method
Data Source
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Figure 2
Figure 3~4
AI summary
An aspect of the invention concerns a method (100) for detecting an anomaly in the operation of a battery using a battery management system, said system comprising an acoustic receiver configured to be attached to a wall of the battery, and a calculating means connected to the acoustic emitter and to the acoustic receiver, a mapping defining a first operating region termed the normal operating region, a second operating region termed the at-risk operating region, and a third operating region termed the dangerous operating region, said method comprising at least one first measurement cycle, each measurement cycle being separated from the preceding measurement cycle by a period termed the measurement period, each measurement cycle comprising a step (102) of receiving an acoustic signal by the acoustic receiver, the received signal being transmitted to the calculating means so as to obtain a measurement point in the mapping; a step (103) of determining the operating region in which the measurement point is located; and, when the measurement point is located in the at-risk operating region or in the dangerous operating region, a step (104) of detecting an anomaly.