MOSFET Cell Switch for Electrolytic Short-Circuit Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electro-winning and electro-refining processes suffer from significant inefficiencies due to short-circuits between anodes and cathodes, which are often reactionary and require manual intervention, limiting automation and productivity.
Innovation Solution
A short-circuit mitigation device with a switch comprising metal-oxide-semiconductor field-effect transistors (MOSFETs) connected in parallel, a conductive failsafe path, and a controller that monitors current and automatically toggles the switch to prevent short-circuits by providing an electrical conduction path and isolating electrodes when excessive current is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thermal or gauss meters are used to identify short-circuits, then short-circuits can be detected, but the detection process is reactionary and requires manual intervention, reducing productivity
Solution Approach 1:
The patent applies preliminary action by implementing continuous monitoring of electrical parameters (current, voltage, resistance) to detect short-circuit conditions before they significantly impact productivity. The system proactively identifies potential short-circuits through real-time parameter analysis, enabling early intervention rather than reactionary response after production disruption
Solution Approach 2:
The patent replaces manual mechanical inspection methods (physical measurement with thermal/gauss meters) with automated electronic monitoring systems. The system uses electrical parameter sensing and control electronics to automatically detect and respond to short-circuit conditions, eliminating the need for manual intervention and maintaining continuous productivity
2Reliability
If workers manually correct short-circuits on top of cells, then short-circuits can be corrected, but this reduces the opportunity to fully automate the harvesting process
Solution Approach 1:
The patent applies self-service by implementing an automated control system that autonomously detects short-circuit conditions and adjusts operational parameters without requiring worker intervention. The system monitors electrical parameters continuously and automatically triggers appropriate responses (such as adjusting current distribution or isolating affected electrodes), enabling the process to correct its own anomalies and freeing workers for harvesting automation
Solution Approach 2:
The patent implements feedback control by continuously monitoring electrical parameters (current, voltage, resistance) and using this information to automatically adjust system operation. The monitoring system provides real-time feedback about electrode conditions, enabling automated decision-making about when and how to correct short-circuit conditions, thereby eliminating manual intervention requirements
3Power
If multiple MOSFETs are connected in parallel to increase current capacity, then electrical current capacity increases, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the high-current switching function into multiple parallel MOSFET devices. Each MOSFET handles a portion of the total current, allowing the system to achieve high current capacity while using standard, off-the-shelf components. The segmentation distributes the electrical load across multiple identical units, simplifying the selection and replacement process
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 solution enables automatic detection and prevention of short-circuits, reducing manual intervention, improving current efficiency, and allowing for partial automation of the harvesting process, thereby enhancing productivity and reducing resource consumption.
Implementation Method 1
the switch configured to selectively provide an electrical conduction path between the contact and the electrode
Implementation Method 2
a switch controller operably associated with the switch to monitor electric current through the switch
Data Source
AI summary
A short-circuit mitigation device for use in an electrolytic cell (101) is disclosed. The device comprises a switch (302) connected in parallel with a damping load (502). The switch is disposed between a contact (102) and an electrode (106) of the cell (101) to selectively provide an electrical conduction path between the contact and the electrode. The switch comprises a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs) (402) connected in parallel. The device further comprises a switch controller (306) operably associated with the switch (302) to monitor electric current (308) through the switch and to generate a toggle signal (309) to toggle the switch (302) from a conductive closed state to a non-conductive open state when the electric current exceeds a first threshold value.