On-Chip Spectrometer for Abnormal Battery Condition Detection
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Solution Overview
Problem
Traditional spectrometers have bulky device footprints due to mechanically movable components, leading to high manufacturing costs and complexity, and on-chip spectrometers face limitations in resolution and efficiency.
Innovation Solution
Development of an on-chip spectrometer with a photodetection layer and a photoresponse matrix, utilizing a voltage source and drain to generate electrical signals, and a computing device for spectral data analysis to determine abnormal battery conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional spectrometers use mechanically movable components (optical gratings, interferometers), then spectral measurement capability is achieved, but device footprint becomes bulky and manufacturing complexity increases
Solution Approach 1:
The patent replaces mechanically movable components (optical gratings, interferometers) with a fixed photodetection layer that uses electrical voltage biases to tune spectral response. This substitution eliminates mechanical moving parts while maintaining spectral measurement capability through electrical control of the photodetection layer's optical properties.
Solution Approach 2:
The patent changes the operational parameter from mechanical movement to electrical voltage biasing. By applying different voltage biases to the photodetection layer, the spectral response is tuned across different wavelengths, replacing the need for mechanical scanning while achieving comprehensive spectral coverage.
2Measurement precision
If traditional spectrometers are designed for high spectral resolution, then measurement accuracy improves, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent replaces complex mechanical spectral scanning systems with an electronically tuned photodetection layer, significantly simplifying manufacturing while maintaining spectral resolution through electrical control of the detection layer's band structure and optical absorption characteristics.
Solution Approach 2:
The photodetection layer serves multiple functions: it acts as both the spectral scanning mechanism (through voltage-tuned absorption) and the detection element simultaneously, eliminating the need for separate mechanical gratings and detectors, thereby reducing manufacturing complexity and cost.
3Area of stationary object
If on-chip spectrometers are miniaturized, then device footprint is reduced, but spectral resolution and measurement efficiency deteriorate
Solution Approach 1:
The patent achieves miniaturization by integrating the spectral scanning function directly into the photodetection layer through electrical biasing, eliminating bulky mechanical components. The spectral resolution is maintained through precise electrical control of the detection layer's optical properties despite the reduced physical size.
Solution Approach 2:
The patent transitions from spatial scanning (mechanical movement in real space) to energy space scanning (electrical voltage tuning of optical absorption). This dimensional change allows spectral resolution to be achieved through electrical parameter control rather than physical size, enabling miniaturization without sacrificing measurement precision.
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
The solution provides a cost-effective, compact spectrometer for battery monitoring that efficiently detects abnormal conditions by analyzing spectral data, reducing manufacturing complexity and enhancing resolution.
Implementation Method 1
a photodetection layer that includes one or more photodetection materials configured to generate a photoresponse in response to an incident source
Data Source
AI summary
A system comprising one or more spectrometers coupled to one or more battery cells, wherein the one or more spectrometers generate one or more electrical signals in response to an incident source in proximity to the one or more battery cells, and wherein the electrical signals comprise spectral data associated with emissions from the one or more battery cells. The system further comprising a computing device configured to receive the spectral data and one or more operating variables, compare the spectral data with reference spectral data and the one or more operating variables, and determine a presence of abnormal operating conditions of the one or more battery cells based on the comparison.