Dynamic Battery Charging Power Adjustment
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Solution Overview
Problem
Existing charging methods for rechargeable batteries lack efficiency and adaptability, as they do not dynamically adjust power based on the battery's usage state, leading to suboptimal charging processes that may not maximize battery capacity or extend the battery's lifespan.
Innovation Solution
A charging method and system that dynamically adjusts charge power based on the battery's usage state, comprising a power output unit, control unit, and measurement unit, which execute first and second charge processes with adjustable power levels, ensuring optimal charging by considering factors like voltage, current, and impedance, and incorporating trigger signals for maximum power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed preset power is provided to the rechargeable battery during charging, then the charging process is simple to implement, but the charging efficiency and battery lifespan are suboptimal due to lack of dynamic adaptation
Solution Approach 1:
The charging method transitions from fixed preset power to dynamic adjustable power by detecting the battery's use state (charge cycles, capacity, impedance) and modifying charging parameters in real-time. The control unit adjusts charge power between first and second charge processes based on detected battery conditions, optimizing charging efficiency while extending battery lifespan.
Solution Approach 2:
The system changes charging parameters (power level, current, voltage) based on detected battery use state. The control unit modifies at least one charging parameter during the second charge process compared to the first charge process, adapting to battery degradation and optimizing performance throughout the battery's lifecycle.
2Speed
If continuous power delivery is used during charging, then the charging speed is fast, but the battery lifespan is reduced due to excessive stress on the battery
Solution Approach 1:
The charging process is divided into periodic stages (first charge process and second charge process) with different power levels. The system alternates between higher power charging when battery health is good and lower power charging when degradation is detected, optimizing both charging speed and battery longevity through time-based power modulation.
Solution Approach 2:
The measurement unit continuously detects the battery's use state including charge cycles, capacity, and impedance. This feedback information is used by the control unit to dynamically adjust charging power, reducing power delivery when battery stress indicators increase, thereby protecting battery lifespan while maintaining efficient charging when conditions permit.
3Device complexity
If the charging method does not detect battery use state, then the system complexity is low, but the adaptability to different battery conditions is poor
Solution Approach 1:
The battery management system performs self-diagnosis by detecting its own use state parameters (charge cycles, capacity, impedance) without requiring external complex equipment. The control unit uses this self-detected information to automatically adjust charging parameters, providing adaptive charging with minimal added system complexity.
Solution Approach 2:
The charging system integrates multiple functions into a single platform: power delivery, state detection, data processing, and adaptive control. The control unit handles both standard charging and adaptive charging protocols, while the measurement unit detects multiple battery parameters simultaneously, reducing overall system complexity through functional integration.
Data Source
AI summary
A charging method for a rechargeable battery is disclosed. A preset power is provided to the rechargeable battery when the rechargeable battery is connected to a charger for execution of a first charge process. A use state of the rechargeable battery is obtained. A first adjustable charge power is provided to the rechargeable battery when the rechargeable battery is reconnected to the charger for execution of a second charge process.