Dynamic Trickle Charging Current Adjustment for Lithium Batteries
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Solution Overview
Problem
Existing lithium battery charging methods lack flexibility during the trickle current charge phase, leading to inefficient charging due to fixed charging currents and durations.
Innovation Solution
A charging method that detects the battery voltage and determines corresponding preset voltage ranges to adjust the charging current, allowing for variable charging currents based on voltage ranges, thereby improving charging speed and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed charging current is used during the trickle current charge phase, then the charging process is simple to control, but the charging speed and flexibility are poor
Solution Approach 1:
The patent implements dynamic charging current adjustment during the trickle current charge phase by dividing the voltage range into multiple intervals and assigning different charging currents to each interval. As the battery voltage increases, the charging current is dynamically adjusted according to the voltage interval, transforming the static fixed current approach into a dynamic adaptive approach that improves charging flexibility without excessive complexity
Solution Approach 2:
The patent changes the charging current parameter based on battery voltage intervals. By monitoring the battery voltage and switching between predefined current values according to which voltage interval the battery is in, the system achieves adaptive charging behavior. This parameter change strategy allows the charging current to be optimized for different battery states while maintaining manageable control logic
2Productivity
If a fixed charging current is used throughout the charging process, then the control method is simple, but the charging speed is slow and inefficient
Solution Approach 1:
The patent segments the trickle current charge phase into multiple voltage intervals, with each interval having its own optimized charging current. This segmentation allows the system to apply higher currents when the battery can accept them (higher voltage ranges) and lower currents when needed (lower voltage ranges), thereby improving overall charging speed while maintaining safe and simple interval-based control
Solution Approach 2:
The charging current is made dynamic by adjusting it according to the battery's voltage state. The system transitions from a static fixed current approach to a dynamic approach where the current automatically adapts to the battery's charging characteristics at different voltage levels, improving charging efficiency without requiring complex real-time optimization algorithms
Data Source
AI summary
Embodiments of the present disclosure provide a charging method, a charging device and a terminal. The charging method includes: when detecting that a battery is charged with a trickle current, acquiring a voltage of the battery; determining a preset voltage range to which the voltage belongs; acquiring a charging current corresponding to the preset voltage range; and charging the battery according to the charging current. During a process that the battery is charged with the trickle current, the battery may be charged with a different charging current when the voltage of the battery belongs to a different voltage range, thereby improving the flexibility of a trickle current charge phase.