Pressure Sensor Battery Swelling Detection
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Solution Overview
Problem
Users face difficulties in detecting battery swelling in mobile devices, which can lead to safety issues like battery burnout or ignition, and reduced battery charge capacity, making it hard to determine when to replace the battery appropriately.
Innovation Solution
An electronic device equipped with a pressure sensor between the display and the battery, which detects pressure signals to differentiate between touch pressure and swelling pressure, allowing the processor to adjust charging characteristics based on the detected pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure sensor is added to detect battery swelling, then safety and detection accuracy are improved, but device complexity increases
Solution Approach 1:
The pressure sensor is integrated into the existing display assembly structure, merging the detection function with the display component rather than adding a separate standalone detection system. This reduces overall device complexity while maintaining the safety detection capability.
Solution Approach 2:
The pressure sensor serves multiple functions: it detects both user touch input and battery swelling conditions using the same hardware component. By making the pressure sensor multi-functional, the patent avoids adding separate sensors for different detection purposes, thereby limiting the increase in device complexity.
2Adaptability or versatility
If the pressure sensor is used to detect both touch and swelling, then detection versatility is improved, but measurement precision deteriorates
Solution Approach 1:
The patent divides the pressure detection function into different operational modes or contexts. By segmenting the detection scenarios (touch interaction versus battery swelling), the system can apply different interpretation rules and threshold criteria to each, thereby maintaining measurement precision for both functions despite using a single sensor.
Solution Approach 2:
The system dynamically adjusts its interpretation of pressure sensor data based on the operational context. During active touch interaction, the system expects pressure signals at specific locations and times. When no touch is detected but pressure is present, the system interprets this as battery swelling. This dynamic contextual interpretation maintains precision across different detection goals.
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
Effectively prevents safety accidents and extends the usage time of mobile devices by accurately detecting battery swelling and adjusting charging parameters, ensuring timely battery replacement.
Implementation Method 1
a pressure sensor disposed between the display and the battery configured to detect a pressure on the display
Data Source
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AI summary
An electronic device includes a battery; a display; a touch sensor configured to detect a touch on the display; a pressure sensor disposed between the display and the battery configured to detect a pressure on the display; and a processor, wherein the processor is configured to obtain a pressure signal using the pressure sensor, to determine whether a touch signal has occurred and/or determine a position of a touch signal corresponding to the touch obtained through the touch sensor and whether the position of the touch signal corresponds to a pressure position related to the obtaining of the pressure signal, and to adjust at least one characteristic related to charging of the battery based on at least a portion of the position or whether the pressure signal and the touch signal have occurred.