Battery Charging Voltage Regulation for Conveyance Safety
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Solution Overview
Problem
Existing electronic devices that charge batteries lack effective safety management, particularly in environments like airplanes and public transportation, where the risk of ignition from battery energy density is high, leading to potential hazards.
Innovation Solution
An electronic device equipped with a charging circuit, power supply controller, and detector, which regulates battery charging by sensing the use environment, specifically reducing the battery voltage when inside a conveyance to mitigate the risk of ignition, and returning to normal charging when outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery charging voltage is maintained at normal levels, then the charging efficiency and battery capacity utilization are improved, but the risk of battery ignition increases in conveyance environments
Solution Approach 1:
The charging voltage is made dynamic rather than fixed. The power supply controller adjusts the charging voltage based on real-time detection of the device's location. When the detector identifies that the electronic device is inside a conveyance, the charging voltage is automatically reduced to a safe level. When outside conveyances, the charging voltage returns to normal levels, ensuring both safety and charging efficiency under different conditions.
Solution Approach 2:
The charging parameter (voltage) is changed based on environmental conditions. The system changes the charging voltage parameter from normal level to reduced level when detecting conveyance environments, and vice versa. This parameter adaptation resolves the contradiction by allowing high voltage charging when safe and low voltage charging when risky.
2Reliability
If the battery charging is regulated in all environments, then the safety risk is reduced, but the charging productivity decreases
Solution Approach 1:
The charging regulation is applied locally rather than universally. The power supply controller selectively regulates charging only in specific locations (inside conveyances) where ignition risk exists, while allowing full-speed charging in safe environments (outside conveyances). This localized approach maintains safety where needed without compromising overall charging productivity.
Solution Approach 2:
The charging regulation status is dynamic, switching between regulated and unregulated modes based on location detection. The system transitions between different charging states (regulated vs. normal) depending on whether the device is in a conveyance, ensuring safety only when necessary and maintaining productivity when safe.
3Object-affected harmful factors
If the battery voltage is reduced when inside conveyances, then the ignition risk is mitigated, but the charging time increases
Solution Approach 1:
The charging voltage duration is dynamic and context-dependent. The system applies reduced voltage only for the specific time period when the device is detected to be inside a conveyance, and resumes normal voltage immediately when the device exits the conveyance. This temporal adaptation minimizes the time loss while maintaining safety during the critical period.
Solution Approach 2:
The system takes preliminary action by detecting the conveyance environment and proactively reducing charging voltage before ignition risk can materialize. By anticipating the safety concern and acting in advance, the system prevents potential hazards while minimizing disruption to the charging process through quick response and recovery.
Data Source
AI summary
An electronic device charges a battery. The electronic device includes a charging circuit, a power supply controller, and a detector. The charging circuit charges the battery. The power supply controller controls charging of the battery performed by the charging circuit. The detector detects information about a use environment where the electronic device is used. When the power supply controller determines that the use environment for the electronic device is a specific environment based on the information detected by the detector, the power supply controller regulates the charging performed by the charging circuit.