Battery Charge Voltage Control Using Stable Discharge Current
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The capacity and performance of lithium ion batteries degrade with each charge and discharge cycle, limiting their lifespan, and existing charge methods do not effectively manage charge and discharge states to extend battery life.
Innovation Solution
A method and device that monitor the discharge current of a lithium ion battery, determining if it is stable within a predetermined time period, and adjust the charge voltage accordingly from a set of sample voltages to optimize charging, thereby extending the battery's charge and discharge periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery is continuously charged and discharged using conventional charge methods, then the charging and discharging operations can be performed frequently, but the battery capacity and performance degrade rapidly, limiting the battery lifespan
Solution Approach 1:
The patent implements dynamic charge voltage adjustment based on real-time discharge current monitoring. The charge voltage is dynamically changed according to the stable discharge current value detected within a predetermined time period, transforming the static charging process into a dynamic adaptive process that responds to battery state changes, thereby extending battery lifespan while maintaining charging efficiency
Solution Approach 2:
The patent changes the charge voltage parameter based on discharge current characteristics. By selecting different charge voltages from a predetermined voltage set according to the detected stable discharge current, the system optimizes charging parameters to reduce battery degradation, resolving the contradiction between charging frequency and battery lifespan
2Reliability
If the charge voltage is adjusted dynamically based on discharge current stability, then the battery lifespan is extended, but the charge control complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the discharge current is continuously monitored during charging, and the charge voltage is adjusted based on the detected stable discharge current value. This closed-loop feedback control extends battery lifespan by adapting to battery state changes while maintaining manageable complexity through automated control
Solution Approach 2:
The battery management system automatically monitors discharge current and adjusts charge voltage without requiring external intervention. The system serves itself by detecting battery state and making appropriate charging adjustments, reducing the need for complex external control mechanisms
Data Source
AI summary
A charge method for a battery, a storage medium, and a terminal are provided and include: acquiring a discharge current of the battery when the battery is in a charge state; determining whether the discharge current is smaller than a predetermined current threshold value; if yes, determining whether the discharge current is in a stable state within a predetermined time period; and selecting a target voltage from a plurality of sample voltages in a predetermined voltage set according to a result of the stable state, adopting the target voltage as a charge voltage to charge the battery, and continuing to perform the determining whether the discharge current is smaller than the predetermined current threshold value.