Interaction-Based Charging Control for Thermal Management
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Solution Overview
Problem
Portable devices experience thermal issues during charging, leading to discomfort and potential performance degradation due to high thermal impact, even with efficient fast charging solutions.
Innovation Solution
The implementation of interaction-based charging control, which uses sensors to detect user interaction and adjust charging power, reducing heat dissipation by lowering charging current or voltage when interaction is detected, allowing for increased processing power and a cooler device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fast charging power is increased to charge the battery quickly, then charging speed is improved, but device temperature increases causing thermal impact and discomfort
Solution Approach 1:
The charging controller dynamically adjusts charging power based on real-time temperature monitoring. When the device temperature exceeds a threshold during fast charging, the controller automatically reduces charging power to lower temperature, and can restore higher power when temperature returns to acceptable ranges, creating a dynamic balance between charging speed and thermal management
Solution Approach 2:
The system implements a feedback mechanism where temperature sensors continuously monitor device temperature during charging, and this temperature information is fed back to the charging controller. The controller uses this feedback to adjust charging power in real-time, reducing power when temperature is high and maintaining or increasing power when temperature is acceptable, thereby resolving the contradiction between fast charging and thermal control
2Temperature
If charging power is reduced to lower device temperature, then device temperature is controlled, but charging speed decreases
Solution Approach 1:
The charging system employs periodic action by alternating between high-power charging phases and reduced-power cooling phases based on temperature conditions. When temperature is within acceptable ranges, fast charging power is applied; when temperature exceeds thresholds, power is reduced temporarily. This periodic adjustment allows the system to achieve both fast charging capability and effective temperature control over the charging cycle
Solution Approach 2:
The charging controller changes operating parameters (charging power level) based on temperature conditions. By adjusting the charging power parameter dynamically according to real-time temperature measurements, the system can optimize between charging speed and temperature control, applying high power when safe and reducing power when thermal limits are approached
3Loss of energy
If high charging power is applied continuously, then charging efficiency is maintained, but device performance deteriorates due to internal heating
Solution Approach 1:
The system performs preliminary action by proactively monitoring temperature trends during charging and preemptively adjusting charging power before excessive heating occurs. The temperature monitoring and control mechanism acts in advance to prevent thermal accumulation that would degrade device performance, rather than waiting for problems to manifest
Solution Approach 2:
The system converts the potentially harmful effect of heat generation during fast charging into a beneficial control mechanism. By monitoring temperature rise as a feedback signal, the system uses the thermal effect itself to trigger power adjustments that prevent harmful overheating, transforming what could be a harmful byproduct into a useful control parameter for optimizing both charging efficiency and device performance
Data Source
AI summary
Interaction based charging control is described. In an embodiment, a device is described, comprising: an interface configured to receive a charging power from another device; a sensor configured to detect interaction of the device; a charging controller configured to reduce the charging power in response to the detected interaction; in response to the reduced charging power, a processor configured to allow more processing power for the device. In other embodiments, a device comprising a sensor configured to detect a temperature of the device, and a method are discussed.