Fail-Safe Switching Module Thermal Management
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Solution Overview
Problem
The increasing miniaturization of fail-safe switching modules leads to excessive heating due to reduced housing dimensions, necessitating a solution that ensures safe operation and prevents overheating.
Innovation Solution
Incorporating temperature sensors and switch-off mechanisms in series with the switching means to detect overheating and reduce power loss through PWM, along with enabling and release means to manage switching and prevent arcing, allowing for a compact design without air cooling and ensuring fail-safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the housing dimensions are reduced for miniaturization, then the size and form factor are improved, but excessive heating occurs due to reduced heat dissipation capacity
Solution Approach 1:
Temperature sensors are positioned to detect overheating conditions before they cause damage, and switch-off means are pre-configured to automatically interrupt the pull-in circuit when temperature thresholds are exceeded, preventing thermal runaway in the miniaturized housing
Solution Approach 2:
The patent replaces mechanical air cooling systems with electronic temperature monitoring and automatic switch-off control, using electrical detection and control circuits instead of mechanical ventilation or heat sinks to manage thermal conditions in the compact housing
2Reliability
If switching means are permanently activated to ensure reliable switching, then switching reliability is improved, but power loss increases due to continuous power consumption
Solution Approach 1:
The patent uses pulse-width modulation (PWM) to apply periodic switching signals to the switching means, maintaining reliable switching operation through controlled pulse trains rather than continuous activation, thereby reducing average power consumption while preserving functional reliability
Solution Approach 2:
The patent implements dynamic power management by adjusting the power supply to switching means based on operational requirements, using control circuits to modulate power delivery and maintain optimal switching performance only when needed, rather than sustained high power consumption
3Loss of energy
If switching means are operated with reduced power to minimize heat generation, then power loss is reduced, but the risk of improper operation increases without adequate monitoring
Solution Approach 1:
The patent incorporates temperature sensors that continuously monitor thermal conditions and provide feedback to control circuits, which adjust power delivery to switching means in real-time, ensuring operational reliability is maintained even when operating with reduced power through adaptive control
Solution Approach 2:
The patent implements self-monitoring and self-regulation where the switching module automatically detects its own thermal state through integrated sensors and adjusts its power consumption accordingly, with automatic switch-off capability that allows the system to service its own thermal management without external intervention
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 effectively reduces power loss, prevents overheating, and ensures safe operation by integrating temperature monitoring and power reduction techniques, enhancing the fail-safety of the switching module and eliminating the need for air cooling and safety fuses.
Implementation Method 1
a first temperature sensor is arranged on the first switching device and a second temperature sensor is arranged on the second switching device
Implementation Method 2
the means for reducing the power loss are designed as a first reducing means, which is arranged in a series connection with the first switching means, and as a second reducing means, which is arranged in a series connection with the second switching means
Data Source
AI summary
The invention relates to a fail-safe switching module (1) with a first switching means (10) and a second switching means (20), wherein the switching means (10, 20) are configured to switch a load (50) by means of a switching means, wherein a first temperature sensor (31) is arranged on the first switching means (10) and a second temperature sensor (32) is arranged on the second switching means (20), wherein the first switching means (10) is arranged in series with a first switching means (41) and a second switching means (42) and the second switching means (20) is arranged in series with a third switching means (43) and a fourth switching means (44), wherein the first switching means (41) and the third switching means (43) are configured to react to the first temperature sensor (31) and the second switching means (42) and the fourth switching means (44) are configured to react to the second temperature sensor (32).to switch off the switching devices (10, 20) in the event of an overtemperature of the first switching device (10) or the second switching device (20).