Heat Dissipation Control for Temperature Detection Hysteresis
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Solution Overview
Problem
Existing heat dissipating element control methods in high-power electronic devices fail to adjust heat dissipating efficiency in real time due to temperature detection hysteresis, leading to inefficient cooling and potential overheating, especially when the device's running status changes rapidly.
Innovation Solution
A control method and apparatus that adjust heat dissipating efficiency using a target adjustment function based on a set of status parameters and detected temperature, allowing for real-time adjustments without waiting for temperature detection hysteresis, by determining values of first and second temperature parameters within this function to ensure accurate heat dissipation efficiency matching actual conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a table lookup method is used to adjust heat dissipating efficiency based on detected temperature, then the control method is simple to implement, but the heat dissipating efficiency cannot be adjusted in real time due to temperature detection hysteresis
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing temperature parameters (first temperature parameter and second temperature parameter) in a lookup table based on status parameters before actual temperature changes occur. When status parameters change, the system immediately retrieves the pre-calculated temperature parameters from the table, enabling instant adjustment of heat dissipating efficiency without waiting for temperature detection hysteresis to resolve.
Solution Approach 2:
The patent implements dynamics by making the heat dissipating efficiency adjustment dynamic and adaptive to status parameter changes. Instead of relying on static temperature detection that suffers from hysteresis, the system dynamically updates the target adjustment function parameters based on current status parameters, allowing the heat dissipating efficiency to respond immediately to changing operating conditions.
2Measurement precision
If the quantity of points in the preset mapping relationship table is increased to achieve higher control accuracy, then the control precision is improved, but the storage space required and table lookup execution time are excessively large
Solution Approach 1:
The patent extracts only the essential parameters needed for control by storing first temperature parameter and second temperature parameter in the lookup table instead of storing complete temperature-efficiency mapping for all possible temperature values. This extraction approach maintains control accuracy while significantly reducing the storage space required in the mapping relationship table.
Solution Approach 2:
The patent applies parameter changes by transforming the traditional temperature-efficiency mapping approach into a status parameter-based temperature parameter storage approach. Instead of storing efficiency values for numerous temperature points, the system stores temperature parameters that are calculated based on status parameters, reducing storage requirements while maintaining the ability to accurately determine heat dissipating efficiency.
3Quantity of substance
If the quantity of points in the preset mapping relationship table is reduced to decrease storage space, then the storage efficiency is improved, but the heat dissipating efficiency switching is not smooth and control accuracy decreases
Solution Approach 1:
The patent applies parameter changes by using first temperature parameter and second temperature parameter derived from status parameters to continuously adjust the target adjustment function. This approach ensures smooth transitions in heat dissipating efficiency switching because the parameters are calculated based on current operating conditions rather than discrete table lookup values, maintaining stability and smoothness even with reduced storage space.
4Reliability
If heat dissipating efficiency corresponding to each temperature range is set to be large for compatibility with high temperature state, then the safety margin is improved, but the service life of the heat dissipating element is reduced
Solution Approach 1:
The patent implements dynamics by making heat dissipating efficiency adjustment dynamic and adaptive to actual operating conditions through status parameters. Instead of maintaining consistently high heat dissipating efficiency for safety margins, the system adjusts efficiency based on real-time status parameters, ensuring adequate cooling when needed while reducing unnecessary high-efficiency operation that would reduce heat dissipating element service life.
Solution Approach 2:
The patent applies parameter changes by using status parameters to dynamically determine the appropriate heat dissipating efficiency level. The target adjustment function parameters (first temperature parameter and second temperature parameter) are adjusted based on current operating conditions, allowing the system to optimize between safety margins and element service life by matching heat dissipating efficiency to actual thermal demands rather than using fixed conservative settings.
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 real-time adjustment of heat dissipating efficiency, preventing overheating and extending the service life of heat dissipating elements by ensuring heat dissipation efficiency keeps pace with rapid temperature changes, thus ensuring safe operation and reducing wear on heat dissipating elements.
Implementation Method 1
the detected temperature of the heat emitting element is usually detected by an additional temperature detection element, and the heat emitting element is connected to the temperature detection element by using a connection apparatus. However, due to thermal resistance, the temperature detection element has specific hysteresis in detecting an actual temperature of the heat emitting element.
Data Source
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AI summary
Embodiments of this application disclose a heat dissipating element control method, including: obtaining a status parameter set and a detected temperature of a first device, where the status parameter set is associated with a running temperature of the first device; determining values of a first temperature parameter and a second temperature parameter in a target adjustment function based on the status parameter set, where the target adjustment function is a function with the detected temperature being an independent variable and heat dissipating efficiency of a heat dissipating element being a dependent variable; and determining the heat dissipating efficiency of the heat dissipating element based on the values of the first temperature parameter and the second temperature parameter and the detected temperature, and controlling running of the heat dissipating element. The embodiments of this application further provide a corresponding control apparatus. Because the first temperature parameter and the second temperature parameter in the target adjustment function are determined based on the status parameter set, corresponding heat dissipating efficiency may be determined in advance when the detected temperature does not change. This resolves a problem that the heat dissipating efficiency is not adjusted in time because the detected temperature cannot reflect an actual temperature in real time.