Battery Capacity Monitoring via Pre-Shutdown Recording

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Solution Overview

Problem

Existing electronic devices face challenges in accurately monitoring and displaying battery capacity, particularly in detecting changes and anomalies such as recharging or voltage impulse issues, which can lead to inaccurate capacity estimation.

Innovation Solution

A power displaying system comprising a power calculating circuit, a display device, and a processing module that records and compares battery capacity before and after device usage, determining differences to identify recharging or voltage issues and displaying the remaining capacity accordingly, using a predetermined percentage threshold to differentiate normal and abnormal capacity changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the fuel gauge IC monitors voltage, charge/discharge current and battery temperature to estimate Full Charge Capacity, then the basic battery monitoring function is achieved, but the accuracy of remaining capacity display deteriorates when recharging or voltage impulse issues occur

Engineering Contradiction:

Improvebattery capacity monitoring accuracyVSAvoidremaining capacity display accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The system performs preliminary actions by recording the first remaining capacity before the electronic device is turned off, and then comparing it with the second remaining capacity after turning on. This preliminary recording and comparison mechanism enables the system to detect recharging or voltage impulse issues that occur during the device being turned off, thereby resolving the accuracy deterioration problem in remaining capacity display.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by continuously monitoring battery capacity, comparing capacity changes before and after device usage, and using this feedback information to identify abnormal conditions such as recharging or voltage impulse issues. The feedback mechanism allows the system to adjust and improve the accuracy of remaining capacity display by detecting and responding to capacity changes that indicate problematic conditions.

Inventive Principle:

Principle #23Feedback

2Speed

If the system calculates battery capacity continuously, then real-time monitoring is achieved, but the ability to detect anomalies such as recharging or voltage impulse issues deteriorates

Engineering Contradiction:

Improveresponse speedVSAvoidanomaly detection capability

Core Design Contradiction:

SpeedVSDifficulty of detecting and measuring

Solution Approach 1:

The system segments the battery monitoring process into distinct phases: recording capacity before device shutdown, recording capacity after device startup, and comparing these segmented measurements to detect anomalies. This segmentation approach allows the system to identify recharging or voltage impulse issues that occur during the shutdown period, improving anomaly detection capability while maintaining practical response speed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs preliminary recording of battery capacity before the device is turned off, creating a baseline measurement that can be compared against post-startup measurements. This preliminary action enables the detection of capacity changes that occur during the device being turned off, thereby improving anomaly detection capability without requiring continuous high-speed monitoring.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If no comparison mechanism is used, then the system is simpler, but the ability to identify recharging or voltage impulse problems deteriorates

Engineering Contradiction:

Improvesystem structureVSAvoidbattery health management

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system performs preliminary recording of battery capacity before device shutdown and stores this information for later comparison. This preliminary recording action adds minimal complexity to the system while enabling reliable detection of recharging or voltage impulse issues, thereby improving battery health management reliability without significantly increasing device complexity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism that compares battery capacity measurements taken at different times (before shutdown and after startup) to identify abnormal conditions. This feedback-based comparison approach enhances reliability of battery health management by enabling detection of recharging or voltage impulse problems, while adding only moderate complexity through the comparison logic.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS10295603B2Electronic device and method for displaying remaining battery capacity of the electronic device

Publication Date: 2019.05.21 SHENZHEN FULIAN FUGUI PRECISION INDUSTRY CO LTD

AI summary

A method for displaying remaining battery capacity of an electronic device includes calculating remaining capacity of the battery for a number of predetermined times during a preset interval when a first difference value is greater than a predetermined value. The first difference value is between a first remaining capacity and a second remaining capacity. The first remaining capacity of the electronic device is recorded before turning off the electronic device, and the second remaining capacity of the electronic device after turning on the electronic device. The latest calculated remaining capacity during the preset interval is displayed on the display device when a second difference between each calculated remaining capacity and the first remaining capacity is greater than the predetermined value.