Electrochemical Module Diagnosis Using Superimposed Inspection Power
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Solution Overview
Problem
Existing electrochemical modules require inspection for deterioration states without stopping their operation.
Innovation Solution
A diagnosis apparatus that superimposes inspection power on operation power using an output circuit and processor to measure current and voltage, allowing for diagnosis without stopping the module's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If inspection is performed by stopping the electrochemical module operation, then measurement accuracy is improved, but productivity deteriorates due to operational interruption
Solution Approach 1:
The patent enables continuous operation of the electrochemical module during diagnosis by superimposing inspection power on operation power. The processor controls the output circuit to add a small AC inspection power signal to the DC operation power, allowing the module to maintain its electrochemical reactions while enabling impedance measurements. This resolves the contradiction by making the useful action (power generation or electrolysis) continuous rather than interrupting it for inspection.
Solution Approach 2:
The patent changes the power signal parameters by superimposing a small-amplitude AC inspection power signal on the DC operation power. The inspection power has different frequency and amplitude characteristics that allow it to be distinguished from the operation power. This parameter change enables simultaneous operation and diagnosis without affecting the module's primary function, thus maintaining both productivity and measurement capability.
2Productivity
If inspection power is superimposed on operation power, then productivity is improved by continuous operation, but measurement precision may deteriorate due to power interference
Solution Approach 1:
The patent uses partial action by applying a small-amplitude inspection power signal that is sufficient for measurement purposes but small enough not to significantly disrupt the operation power. The inspection power amplitude is controlled to be much smaller than the operation power, allowing accurate impedance measurements while maintaining the module's normal operational characteristics. This partial application of inspection power resolves the contradiction between continuous operation and measurement precision.
Solution Approach 2:
The patent introduces frequency as an intermediary parameter to separate the inspection signal from the operation signal. By using AC inspection power at a specific frequency superimposed on DC operation power, the system can selectively measure the module's impedance response at the inspection frequency while the operation power continues uninterrupted. The frequency distinction acts as a mediator that allows both signals to coexist without mutual interference.
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
Enables continuous operation of electrochemical modules while accurately assessing their state, including deterioration, by measuring current and voltage with superimposed inspection power.
Implementation Method 1
In the electrochemical module to which the operation power is input, for example, electrolysis of water or the like is generated as an electrochemical reaction by the input of the operation power
Implementation Method 2
the processor, in a state in which the operation power is input to the electrochemical module or the operation power is output from the electrochemical module, superimposes the inspection power on the operation power by supplying the inspection power from the output circuit to the electrochemical module
Implementation Method 3
measures measurement data for diagnosis by measuring a current and a voltage for the electrochemical module in a state in which the inspection power is superimposed on the operation power
Data Source
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AI summary
In an embodiment, a diagnosis apparatus for an electrochemical module in which at least one of an anode and a cathode includes a catalyst is provided, and the diagnosis apparatus includes an output circuit and a processor. The processor, in a state in which the operation power is input to the electrochemical module or the operation power is output from the electrochemical module, superimposes the inspection power on the operation power by supplying the inspection power from the output circuit to the electrochemical module, and measures measurement data for diagnosis by measuring a current and a voltage for the electrochemical module in a state in which the inspection power is superimposed on the operation power.