Dynamic Battery Charging Current Control for Heat Management
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Solution Overview
Problem
Notebook computers take too long to fully charge and generate undesirable heat during faster charging due to limitations in existing battery charging technologies.
Innovation Solution
An apparatus with a battery charger, temperature sensor, and system logic that dynamically adjusts the charging current based on temperature, barometric pressure, battery age, external temperature, and system power demand to optimize charging efficiency and reduce heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher charging current is used to charge the battery faster, then the charging speed is improved, but heat generation increases
Solution Approach 1:
The charging current is dynamically adjusted based on real-time temperature monitoring. The system transitions from a static charging approach to a dynamic one where the charging rate changes continuously according to temperature conditions, allowing faster charging when cool and preventing overheating when warm
Solution Approach 2:
The system changes the charging current parameter based on temperature measurements. By monitoring temperature and adjusting the charging current accordingly, the system optimizes the balance between charging speed and heat generation, enabling faster charging within safe thermal limits
2Loss of time
If higher charging current is used to charge the battery faster, then the charging time is reduced, but battery reliability deteriorates
Solution Approach 1:
The system implements feedback control by continuously monitoring battery temperature and adjusting the charging current in response. This closed-loop approach ensures that charging proceeds as fast as possible while maintaining battery safety and longevity through real-time adjustments based on actual battery conditions
Solution Approach 2:
The charging system transitions from a fixed current approach to a dynamic adaptive approach where charging parameters change in real-time based on battery state, enabling optimized charging that balances speed with battery health preservation
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
This solution allows for faster battery charging while minimizing heat generation and prolonging battery life by adjusting the charging current according to environmental and battery conditions, thereby improving user experience and battery longevity.
Implementation Method 1
a temperature sensor... to sense temperature in the notebook computer
Implementation Method 2
a battery charger coupled to the input to charge a battery
Data Source
AI summary
The apparatus includes an AC adapter input, a battery charger coupled to the input to charge a battery, a temperature sensor, and system logic to execute code stored on storage devices. The battery charger provides a charging current that is a function of temperature sensed by the temperature sensor. The charging current may also be a function of sensed barometric pressure, battery age, external temperature, a full charge capacity, and system power demand.