Battery Module Photodetection for Early Arc and Fire Fault Sensing
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Solution Overview
Problem
Conventional battery monitoring systems fail to timely detect abnormal conditions such as arcing, fires, or breaches within enclosed battery modules using only temperature, voltage, and current data, often resulting in irreversible damage before detection.
Innovation Solution
Incorporating a battery monitoring module with a light-detecting sensor to detect light characteristics within the module, which, when combined with real-time temperature and current data, enables earlier detection of battery faults, including arcing, fires, and breaches, using processing circuitry to determine light intensity, wavelength, and other properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional temperature, voltage, and current sensors are used to monitor battery conditions, then the monitoring system is simple and reliable, but it fails to detect certain battery conditions (arcing, fire, breaches) in a timely manner
Solution Approach 1:
The monitoring system is segmented into multiple independent sensor types (temperature, voltage, current, and light sensors), each detecting different aspects of battery conditions. This segmentation allows the system to capture diverse failure modes simultaneously, improving both detection reliability and speed without requiring a single complex sensor
Solution Approach 2:
The light sensor serves multiple functions: detecting arcing through UV light, detecting fires through visible light, and detecting enclosure breaches through light leakage. This multi-functionality allows a single sensor type to address multiple detection needs, improving detection reliability across different failure modes while maintaining system simplicity
2Reliability
If light-detecting sensors are added to the battery monitoring module, then detection capability for arcing, fire, and breaches is improved, but device complexity increases
Solution Approach 1:
The light sensor is designed to detect multiple types of abnormalities (arcing, fire, breaches) through a single detection mechanism. By using the universal property of light detection across different wavelengths and conditions, the system improves fault detection capability without proportionally increasing device complexity
Solution Approach 2:
Light acts as an intermediary signal that reveals hidden battery conditions. Instead of directly measuring electrical or thermal parameters, the system uses light detection as an indirect but highly effective mediator to identify arcing, fire, and breach conditions that other sensors miss
3Measurement precision
If multiple sensor types are integrated to provide redundant measurements, then false positives are reduced and detection accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
The system uses segmented sensor placement within the battery enclosure, with each sensor type positioned to optimally detect its specific parameter. This segmentation allows for modular assembly and standardized mounting procedures, reducing manufacturing complexity despite the presence of multiple sensor types
Solution Approach 2:
Multiple sensor types are merged into a single integrated monitoring module that processes data from all sensors through a unified control system. This merging approach simplifies manufacturing by using a common platform and shared electronics, while still providing redundant measurements for improved detection accuracy
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
Enhances the ability to detect battery faults promptly, reducing the risk of irreversible damage by providing redundant measurements and confirming failures detected by other sensors, thus improving safety and reducing false positives.
Implementation Method 1
a light sensor configured to detect light within a battery module. The processing module receives a sensor signal from the light sensor and determines, using processing circuitry, a light characteristic within the battery module based on the sensor signal
Implementation Method 2
the battery monitoring module emits light from a light source within the battery module. The light characteristic represents a light characteristic while light is being emitted from the light source
Data Source
AI summary
A battery monitoring module may be arranged in such a way as to receive a sensor signal from a light sensor configured to detect light within a battery module. The battery monitoring module may determine, using processing circuitry, a light characteristic within the battery module based on the sensor signal. The battery monitoring module may determine, using processing circuitry, a battery condition of the battery module based on the light characteristic.