Battery Charging Control via Temperature-Regulated Cut-off Current
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Solution Overview
Problem
Electronic devices require frequent charging due to high power consumption, and traditional charging methods often lead to inefficient battery charging, particularly in the constant-voltage stage, which can result in overcharging or incomplete charging.
Innovation Solution
A charging control method and apparatus that acquires the current charging parameter and temperature of a battery in constant-current mode, dynamically adjusts the charging cut-off current based on temperature, and continuously applies this current until the battery is fully charged, thereby omitting the constant-voltage stage and improving charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional three-stage charging (trickle, constant-current, constant-voltage) is used, then battery charging completeness is ensured, but charging efficiency is reduced and charging time is prolonged
Solution Approach 1:
The patent extracts and removes the constant-voltage charging stage from the traditional three-stage charging process. By eliminating this final stage and using temperature-regulated constant-current charging throughout, the system achieves full battery charging without the time-consuming constant-voltage phase, directly improving charging efficiency while reducing total charging time.
Solution Approach 2:
The patent implements dynamic temperature-based regulation of the charging cut-off current during constant-current charging. The charging current is continuously adjusted according to real-time battery temperature measurements, allowing the system to optimize charging speed while preventing overheating, thereby achieving efficient and safe charging without transitioning to constant-voltage mode.
2Reliability
If constant-voltage charging stage is applied, then battery overcharging is prevented, but charging efficiency decreases and battery may suffer overvoltage damage
Solution Approach 1:
The patent implements a feedback mechanism where the battery temperature is continuously monitored during charging, and the charging cut-off current is dynamically adjusted based on temperature measurements. This closed-loop control prevents overcharging by reducing current when temperature thresholds are approached, ensuring battery safety while maintaining high charging efficiency through optimized current regulation.
Solution Approach 2:
The patent changes the charging parameter (cut-off current) dynamically based on battery temperature conditions. By adjusting the charging current according to temperature variations rather than switching to constant-voltage mode, the system maintains reliable battery protection while avoiding the efficiency losses and potential overvoltage damage associated with traditional constant-voltage charging.
Data Source
AI summary
Provided are a charging control method, a charging control apparatus, and a computer readable storage medium. The charging control method includes the following. A charging parameter currently used for charging a battery is acquired, when an electronic device is in a constant-current charging mode. A temperature of the battery is acquired when the charging parameter reaches a preset parameter. A charging cut-off current of the battery is regulated according to the temperature. The charging cut-off current is continuously applied to the battery until the battery is fully charged.