Battery Charging Apparatus Voltage Stabilization Control
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Solution Overview
Problem
Existing battery charging systems face challenges in accurately displaying the remaining battery charge amount and efficiently managing charging time, leading to increased charging times and frequent status changes in indicators.
Innovation Solution
A battery charging apparatus that temporarily stops charging and waits for a given period to stabilize the battery voltage, allowing for accurate charge amount acquisition and display, while maintaining a charging status indication without unnecessary interruptions, and adjusts update intervals based on battery voltage levels to optimize user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a wait time is set to allow terminal voltage to become constant for accurate remaining charge amount detection, then measurement precision is improved, but productivity deteriorates due to increased charging time
Solution Approach 1:
The charging control device performs periodic charging control that alternates between charging execution and temporary suspension. During suspension periods, the terminal voltage stabilizes allowing for accurate remaining charge amount detection. This periodic alternation enables both accurate measurement and reasonable charging speed by not continuously waiting for voltage stabilization.
Solution Approach 2:
The system performs preliminary detection of the terminal voltage change rate before deciding whether to suspend charging. By predicting whether the voltage will stabilize soon based on its current change rate, the system can make informed decisions about when to pause charging, optimizing both measurement accuracy and charging efficiency.
2Measurement precision
If a wait time is set to allow terminal voltage to become constant for accurate remaining charge amount detection, then measurement precision is improved, but loss of time worsens due to frequent indicator status changes
Solution Approach 1:
The invention separates the remaining charge amount detection function from the charging execution flow. Detection is performed during temporarily suspended charging periods rather than requiring the charging process to stop completely. This extraction allows accurate measurement without repeatedly interrupting the overall charging process, reducing indicator status changes.
Solution Approach 2:
The charging control device monitors the terminal voltage change rate and uses this feedback to determine when voltage stabilization is imminent. This feedback mechanism allows the system to time its suspension periods optimally, performing detections when voltage is stabilizing rather than waiting for complete stabilization, thereby reducing unnecessary waiting time and indicator changes.
3Measurement precision
If charging is temporarily stopped to detect stable battery voltage, then measurement precision is improved, but duration of action worsens due to extended charging time
Solution Approach 1:
Instead of waiting for complete voltage stabilization before each detection, the system performs partial waiting by detecting the voltage change rate and determining when stabilization is sufficiently close. This partial action approach achieves adequate measurement precision without the excessive waiting time that would result from requiring complete stabilization, thereby reducing total charging duration.
Solution Approach 2:
The charging process uses periodic suspension-detection-resumption cycles rather than continuous waiting. Each cycle involves brief suspensions for detection followed by resumption of charging. This periodic approach accumulates measurement opportunities without extending the total charging duration significantly, as charging resumes after each brief detection period.
Data Source
AI summary
A battery charging apparatus that acquires a remaining battery charge amount by detecting a battery voltage after charging of a battery by a charging circuit has been temporarily stopped and a given wait time has elapsed, wherein, regardless of the temporary stopping of charging by the charging circuit, a charging display control unit that controls display of a charging displaying section causes the charging displaying section to display that charging control is being performed while charging control is being performed.