Intelligent Battery Charging System with Dynamic Current Control
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Solution Overview
Problem
Rechargeable Lithium-ion batteries face safety and longevity issues due to manufacturer, system, and charging limitations, which can lead to overheating, fire, or explosion, especially during charging across certain temperature and charge percentage ranges.
Innovation Solution
An intelligent battery charging system that monitors device states, battery temperature, and charge levels, adjusting charging currents and applying remedial actions such as reducing charge levels, stopping charging, or shutting down devices to prevent overheating, while enforcing a modified charge level mapping scheme to improve safety and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If constant charge current is set high to reduce charging time, then charging efficiency is improved, but device temperature increases causing safety hazards
Solution Approach 1:
The patent implements dynamic charge current adjustment based on real-time temperature monitoring and device state detection. The system transitions from static constant current charging to adaptive charging where the current profile changes dynamically according to temperature thresholds and operational states, resolving the contradiction between charging speed and temperature control
Solution Approach 2:
The system changes the charging parameter (current) based on temperature conditions and device states. By modifying the charge current profile according to real-time parameters, the system achieves both efficient charging and safe temperature management, directly addressing the contradiction between high charging efficiency and temperature control
2Reliability
If charge current is set low to prevent overheating, then device safety is improved, but charging time increases unnecessarily
Solution Approach 1:
The system dynamically adjusts charge current based on real-time temperature and device state, allowing high current when safe and low current when needed. This dynamic approach eliminates the need for consistently low current charging, reducing charging time while maintaining safety
Solution Approach 2:
The patent implements a feedback mechanism where temperature sensors and device state detectors continuously monitor conditions, and the controller adjusts charge current accordingly. This closed-loop control ensures safety while optimizing charging speed, preventing the time loss associated with conservative fixed-current charging
3Quantity of substance
If battery is charged to 100% capacity to maximize energy availability, then energy storage is improved, but battery longevity decreases due to overcharging effects
Solution Approach 1:
The system changes the charge level parameter based on temperature and battery state. By adjusting the target charge level dynamically rather than always charging to 100%, the system preserves battery longevity while maintaining adequate energy storage, directly addressing the contradiction between maximum capacity and battery life
Solution Approach 2:
The patent implements partial charging strategies where the battery is charged to sufficient but not maximum levels under certain conditions. This partial action approach prevents overcharging damage while providing adequate energy storage, resolving the contradiction between full capacity charging and battery preservation
4Ease of operation
If charging continues across all temperature ranges to ensure availability, then energy accessibility is improved, but battery safety risks increase due to manufacturer limitations
Solution Approach 1:
The system performs preliminary checks of temperature and device state before initiating or continuing charging. By anticipating safety risks and preventing charging under unsafe conditions, the system ensures energy availability when safe while eliminating safety risks, directly addressing the contradiction between accessibility and safety
Data Source
AI summary
An intelligent battery charging system for improving battery safety, battery longevity, and battery charging efficiency. The intelligent battery charging system includes a memory that is arranged to store an intelligent battery controller system. The intelligent battery controller system is executable by a processor and is in communication with a device state sensor, a battery temperature sensor, one or more current sensors, and a battery charge level sensor. The intelligent battery controller system is configured to monitor, via the battery temperature sensor, a temperature of the battery for a mobile device and apply one or more of a plurality of remedial actions to lower the temperature of the battery when a battery temperature above a certain threshold is measured.