Shared Measuring Circuit for Cell and Gas Sensor Monitoring
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Solution Overview
Problem
Existing electric energy supply systems for vehicles, such as battery and fuel-cell systems, require enhanced monitoring capabilities to ensure performance, safety, and efficiency, but current methods are limited by circuitry complexity and the need for separate measurement circuits for cell and gas sensors.
Innovation Solution
Integration of an electrochemical gas sensor with the existing measuring circuit, using a toggle switch to alternately connect the circuit to either the cell element or the gas sensor, allowing for simultaneous parameter measurement and gas concentration analysis with minimal additional circuitry, leveraging electrochemical impedance spectroscopy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate measuring circuits are used for cell elements and gas sensors, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The measuring circuit is designed to perform multiple functions: it can measure electrical parameters of cell elements (voltage, current, impedance) and also measure gas concentrations. The circuit includes switching means that allow it to be connected to different sensors (cell sensors and gas sensors) and alternately perform different measurement tasks, making the circuit universal and multi-functional.
Solution Approach 2:
The patent combines the measuring circuits for cell elements and gas sensors into a single integrated circuit. Instead of having separate independent circuits, the design merges both measurement functions into one shared circuit resource, reducing the overall number of circuits while maintaining measurement capabilities through time-division multiplexing and switching mechanisms.
2Measurement precision
If multiple separate measuring circuits are implemented, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The measuring circuit is designed as a universal platform that can handle both cell element measurements and gas sensor measurements. This multi-functionality reduces the total number of circuits needed, thereby lowering manufacturing costs while preserving measurement precision through dedicated measurement protocols for each sensor type.
Solution Approach 2:
The circuit alternates between measuring cell parameters and gas concentrations by switching connections. During normal operation, the circuit measures cell parameters; during designated intervals, it switches to measure gas concentrations. This time-division approach allows one circuit to serve multiple purposes without compromising the precision of either measurement type.
3Device complexity
If a single measuring circuit is shared between cell elements and gas sensors, then device complexity is reduced, but measurement precision may deteriorate
Solution Approach 1:
The measuring circuit is segmented into functional modules with switching means that can connect to different sensors. The circuit includes separate input paths and measurement protocols for cell elements and gas sensors, allowing precise measurements of each type while sharing common processing resources. This modular segmentation maintains precision while enabling circuit sharing.
Solution Approach 2:
The shared measuring circuit operates in periodic cycles, alternately connecting to cell elements and gas sensors through switching means. During each cycle, the circuit dedicates specific time intervals to measuring cell parameters and other intervals to measuring gas concentrations. This periodic operation ensures that each measurement type receives adequate attention and maintains precision despite the shared resource.
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 expanded monitoring capabilities with reduced circuitry expenditure, allowing for accurate gas concentration measurement and cell parameter assessment using the same measuring circuit, improving diagnostic efficiency and reducing installation complexity.
Implementation Method 1
The measuring circuit is accordingly configured to ascertain the at least one parameter of the at least one cell element on the basis of the applied or known excitation variable and the resulting or detected measured variable by means of electrochemical impedance spectroscopy
Implementation Method 2
The resulting measured variable then results in reaction of the at least one cell element to the excitation variable
Data Source
AI summary
An electric energy supply system having at least one cell element, which contains at least one galvanic cell, and having a measuring circuit, which is configured to ascertain at least one parameter of the at least one cell element by electrochemical impedance spectroscopy (EIS). The disclosure provides that the energy supply system comprises an electrochemical gas sensor and the gas sensor is connected to the measuring circuit via a toggle switch, wherein the measuring circuit is configured to apply an electric variable as the excitation variable in the gas sensor and to detect another electric variable as the measured variable at the gas sensor and to ascertain a gas concentration in the surroundings of the gas sensor.