Wireless Battery Charging Control for Battery Aging Reduction
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Solution Overview
Problem
Portable electronic devices face battery aging issues due to aggressive charging and prolonged high state of charge, leading to insufficient battery life, as users often charge devices to full capacity even when not needed.
Innovation Solution
A power system that utilizes usage history information to adjust battery charging settings, such as charge level, rate, and timing, using wireless power transfer technology, allowing users to opt-in or opt-out of data sharing and encryption, to balance user expectations with battery health preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery is charged aggressively to full capacity, then the battery charge level meets user expectations, but the battery ages faster due to repeated charging and prolonged high state of charge
Solution Approach 1:
The charging system dynamically adjusts charging parameters (charge rate, maximum charge level, charging timing) based on real-time battery state, usage patterns, and environmental conditions. The system transitions from static aggressive charging to adaptive charging that modulates power delivery to balance user needs with battery health preservation
Solution Approach 2:
The system changes multiple charging parameters simultaneously including charge rate (power level), maximum charge level (state of charge ceiling), and charging timing (when to start/stop charging). These parameter adjustments are based on battery age, temperature, usage patterns, and predicted future needs, allowing the system to optimize both charge adequacy and battery longevity
2Duration of action of stationary object
If a battery is charged less aggressively to preserve battery health, then battery aging is reduced, but the battery charge level may be insufficient to meet user expectations
Solution Approach 1:
The system performs preliminary charging to an optimized level before the user actually needs the device, based on predicted usage patterns. By analyzing historical data and calendar events, the system charges the battery in advance to an appropriate level, avoiding both overcharging and insufficient charging at the moment of need
Solution Approach 2:
The system continuously monitors battery state, charging progress, and usage patterns, then adjusts charging parameters in real-time based on this feedback. The system learns from user behavior patterns and refines its charging strategy over time, improving both battery health and charge adequacy through iterative optimization
3Adaptability or versatility
If usage history information is collected to optimize charging, then charging can be personalized to user needs, but user privacy concerns arise regarding data sharing
Solution Approach 1:
The system processes and analyzes usage data locally on the user's device rather than transmitting raw data to external servers. Only anonymized aggregates or encrypted data are shared with the charging system, allowing personalized charging optimization while maintaining user privacy and control over data sharing
Solution Approach 2:
The system introduces an intermediary layer (local processing unit or encrypted data buffer) between the user's personal data and the charging optimization algorithm. This intermediary ensures that raw usage history never leaves the device in plain text, and only necessary aggregated information is transmitted for charging decisions
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
The system ensures batteries are charged adequately when needed while reducing wear and tear, thereby extending battery life by optimizing charging based on device usage patterns and user privacy settings.
Implementation Method 1
Wireless power is transmitted using coils in a wireless power transmitting device. Coils in wireless power receiving devices are used in receiving the wireless power to charge the batteries
Data Source
AI summary
A power system uses a power transmitting device to charge batteries in power receiving devices. Wireless power is transmitted using coils in the power transmitting device and coils in the power receiving devices. Usage history information such as power consumption, times and dates of device usage, battery charge state information, device location information, and other information is gathered using portable electronic devices in the system. Control circuitry in the power transmitting device or elsewhere in the system controls power transfer so that battery charging is performed in accordance with appropriate battery charging settings. Battery charging settings such as maximum charge level, charge rate, charging start and stop times, and other settings are adjusted based on usage history information from one or more devices and/or one or more users.