Battery Pack Boosting Charge Current Amplification
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Solution Overview
Problem
Existing secondary battery charging methods for portable devices are inefficient, requiring long charging times and lacking stability, especially as demand increases for high-capacity batteries in portable devices.
Innovation Solution
A battery pack with a boosting charge function that amplifies the charge current from standard chargers using a current amplifying unit, employing a pulse charge scheme and temperature sensing to optimize charging efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a standard charger is used to charge the battery, then the charging process is simple and safe, but the charging time is long and efficiency is low
Solution Approach 1:
The battery pack performs preliminary voltage boosting and current amplification before the main charging process. The boosting charge unit pre-charges the battery cell to a higher voltage state, enabling faster subsequent charging and reducing overall charging time
Solution Approach 2:
The system dynamically adjusts charging parameters based on battery state. The control unit monitors voltage and current in real-time, adjusting the amplification factor and charging rate adaptively to optimize charging speed while maintaining safety throughout the charging process
2Productivity
If a high current is supplied to charge the battery quickly, then charging speed increases, but battery stability and safety deteriorate
Solution Approach 1:
The system implements continuous feedback monitoring of battery voltage, current, and temperature. The control unit receives real-time data from sensors and adjusts charging parameters dynamically, reducing current when temperature rises or voltage approaches full charge, thereby maintaining battery stability during fast charging
Solution Approach 2:
The system changes charging parameters adaptively during the charging process. The amplification factor is reduced as the battery approaches full charge, and temperature thresholds trigger parameter adjustments to maintain safety while maximizing charging speed during optimal conditions
3Quantity of substance
If the battery is charged to full capacity, then energy storage is maximized, but charging time increases and risk of overheating increases
Solution Approach 1:
The boosting charge unit performs preliminary charging at elevated voltage levels, rapidly filling the majority of battery capacity before transitioning to standard charging. This two-stage approach maximizes energy storage while significantly reducing the time required to reach full charge
Solution Approach 2:
The system employs periodic pulse charging with varying current intensities. High-current pulses are applied during periods when battery acceptance is high, followed by brief intervals for thermal management, enabling rapid energy transfer while preventing sustained overheating
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 battery pack significantly reduces charging time to less than 1.5 hours while maintaining battery stability by amplifying the charge current and implementing a pulse charge scheme, and ensures safety by terminating charging when the battery temperature exceeds a reference temperature.
Implementation Method 1
amplifying a charge current which is supplied by a charger to charge a battery cell
Implementation Method 2
charging the battery cell with a constant voltage
Data Source
AI summary
A method of charging a battery pack, the battery pack including at least one battery cell. The method includes comparing a battery cell voltage to a first voltage; comparing the battery cell voltage to a second voltage that is greater than the first voltage; and controlling a current amplifying unit coupled to the at least one battery cell to amplify a current from a charger to the at least one battery cell if the battery cell voltage is between the first voltage and the second voltage.