Electronic Thermal Control Using Multi-Point Heat Source Detection
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Solution Overview
Problem
Electronic devices face challenges in accurately controlling heat generation due to variations between internal and surface temperatures, leading to performance deterioration or suboptimal operation.
Innovation Solution
A method is provided to predict current consumption and temperature for each component of an electronic device, allowing for precise control of heat management by comparing power consumption, detecting heat generation locations, and setting target temperatures to reduce power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature information from a thermistor is used to control heat, then heat control can be implemented, but the accuracy of heat source identification deteriorates due to the non-constant temperature difference between internal and surface temperatures
Solution Approach 1:
The patent divides the electronic device into multiple temperature zones by placing multiple thermistors at different locations (internal and surface). This segmentation allows independent measurement of temperature at each zone, enabling precise identification of heat sources without relying on a single thermistor reading that suffers from non-constant temperature differences.
Solution Approach 2:
The patent transitions from single-point temperature measurement to multi-point spatial temperature measurement. By measuring temperature at multiple locations (different dimensions in space), the system can identify heat sources more accurately and determine heat flow patterns, resolving the limitation of single thermistor measurements.
2Measurement precision
If multiple thermistors are used to improve heat measurement accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent segments the temperature measurement function into multiple distributed thermistor units rather than using a single complex measurement system. Each thermistor is a simple component, but their distributed arrangement provides comprehensive temperature monitoring with high precision without requiring complex individual sensors.
Solution Approach 2:
The patent uses the device's existing structural features (housing, component locations) to determine optimal thermistor placement. The system leverages the natural thermal pathways and structural geometry of the device itself to guide sensor positioning, eliminating the need for additional complex positioning mechanisms or calibration systems.
Data Source
AI summary
A method of an electronic device are provided in which current consumption for one or more components of the electronic device is compared with a predetermined current. A first surface temperature of the electronic device is determined based on the comparison and power consumption of the one or more components. A location is detected where heat corresponding to the first surface temperature is generated. A second surface temperature of the electronic device is obtained based on power consumption of a component disposed in the electronic device corresponding to the location where the heat is generated. A target temperature is set based on the obtained second surface temperature. The component is controlled to reduce the power consumption of the component based on the target temperature.