Electrochemical Cell Diagnostics via Harmonic Response Analysis
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Solution Overview
Problem
Current battery diagnostic methods are inadequate for accurately assessing the health and remaining useful life of electrochemical cells, leading to premature replacement, environmental impacts, and high costs due to limited information on battery health, resulting in inefficient energy storage and safety concerns.
Innovation Solution
A method involving stimulating electrochemical cells with a stimulus frequency to excite non-linear modes and detecting responses with second or greater harmonic components, allowing for the display of internal states such as degradation, asymmetry, and remaining life, using a system with a signal generator, measurement circuitry, and a computing device to analyze and display the battery's condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current battery diagnostic methods are used, then device complexity is reduced and ease of operation is improved, but measurement precision and reliability of battery health assessment deteriorate
Solution Approach 1:
The patent replaces conventional electrical measurement methods with acoustic wave-based diagnostic techniques. Acoustic waves are transmitted through the battery cell and their interactions with internal structures are measured, providing new information about battery health that electrical methods cannot detect. This substitution enables detection of internal defects and degradation mechanisms with higher precision while maintaining operational simplicity.
Solution Approach 2:
The patent introduces acoustic waves as an intermediary medium to probe the battery's internal state. These acoustic waves act as carriers that interact with internal structures (electrodes, electrolyte, separators) and return information about their condition. This intermediary approach allows non-invasive detection of battery health parameters with high measurement precision without requiring complex internal sensors.
2Reliability
If batteries are replaced prematurely to ensure safety, then reliability is improved, but loss of substance and environmental harm worsen
Solution Approach 1:
The patent performs preliminary diagnostic assessments using acoustic wave measurements to detect early signs of battery degradation and potential safety issues. By identifying problems at incipient stages through acoustic anomalies, the system enables proactive maintenance and safe operation extensions, preventing both premature replacement and catastrophic failures. This preliminary detection capability reduces unnecessary battery disposal and extends useful service life.
Solution Approach 2:
The patent implements continuous acoustic monitoring that provides feedback on battery internal condition in real-time. This feedback mechanism tracks degradation trends and alerts operators to developing issues, enabling data-driven decisions about battery replacement timing. The feedback loop optimizes the balance between safety requirements and resource utilization, preventing both premature replacement and operation beyond safe limits.
3Duration of action of stationary object
If conservative operating protocols are applied to extend battery life, then duration of action is improved, but productivity and energy storage efficiency worsen
Solution Approach 1:
The patent transitions from static, conservative operating limits to dynamic, condition-based operation. Acoustic monitoring continuously assesses battery internal state, allowing operating parameters (charge rates, discharge rates, temperature limits) to be adjusted in real-time based on actual battery condition. This dynamic approach maximizes productivity when the battery is healthy while extending operational duration as degradation occurs, optimizing the trade-off between performance and lifespan.
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 provides accurate and detailed information on battery health, enabling more efficient use of batteries, reducing waste, and improving safety by accurately assessing battery degradation and remaining life, thereby optimizing energy storage and reducing environmental impacts.
Implementation Method 1
stimulating non-linear modes of at least one electrochemical cell using a stimulus having a stimulus frequency and detecting a response of the at least one electrochemical cell. A response frequency of the response may be a second or greater harmonic of the stimulus frequency.
Data Source
AI summary
Electrochemical cell diagnostic systems and methods are described. Examples include systems having a signal generator configured to apply a stimulus having a stimulus frequency to at least one electrochemical cell. The stimulus may be configured to excite at least one non-linear mode of the at least one electrochemical cell. Systems may include measurement circuitry configured to detect a response of the at least one electrochemical cell to the stimulus. The response may include a second or greater harmonic component. Systems may include a display device configured to display an indication of an internal state of the at least one electrochemical cell based, at least in part of the second or greater harmonic component of the response.