Battery Management Device Charge Threshold Control
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Solution Overview
Problem
Conventional battery management methods for portable computers maintain high battery charge levels, leading to reduced chargeable capacity over time, as the battery is often charged to full capacity even when not in use, causing attenuation and potential damage from impurities when the battery is removed for external power supply.
Innovation Solution
A battery management device with a discharge circuit and control modules that adjust the battery's state of charge to be below specific thresholds during storage, using embedded chip technology to determine usage patterns and switch to normal charging modes when necessary, thereby maintaining battery health and preventing over-discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery is charged to high level (e.g., 99%) and stored in idle state, then the battery appears to be ready for immediate use, but the chargeable capacity of the battery attenuates significantly (reduced by about eight percent after one year)
Solution Approach 1:
The patent changes the charge level parameter from high (99%) to moderate (50-80%) for long-term storage. The battery management device monitors storage state and automatically adjusts charging parameters, maintaining the battery at optimal charge levels that prevent capacity attenuation while ensuring adequate power availability.
Solution Approach 2:
The battery management device enables the battery system to self-regulate its charge level during storage. The device automatically detects storage conditions and adjusts charging without user intervention, preventing overcharging damage and capacity loss while maintaining readiness for use.
2Use of energy by moving object
If the battery is taken out when external power supply is connected, then power is preserved in the battery, but the exposed portion allows impurity entry causing electrical shortage and damage
Solution Approach 1:
The battery management device acts as an intermediary between the battery and external environment. It controls battery removal decisions based on storage state detection, preventing unnecessary removal that would expose the battery to impurities. The device mediates between power preservation needs and contamination prevention by intelligently managing battery placement.
Solution Approach 2:
The system implements feedback control by continuously monitoring storage conditions and battery state. The battery management device receives feedback about charge level, usage patterns, and environmental conditions, then adjusts battery removal/insertion decisions to prevent both power waste and impurity contamination.
3Duration of action of moving object
If the battery is stored with high amount of electrical charge, then the battery can provide power immediately when needed, but the performance of the battery deteriorates compared to storage with lower charge amount
Solution Approach 1:
The patent optimizes the charge level parameter for storage conditions, changing it from maximum (99%) to optimal range (50-80%). This parameter adjustment maintains adequate power availability for typical portable computer usage while significantly improving battery performance and longevity during storage.
Solution Approach 2:
Instead of charging the battery to full capacity (excessive action), the system applies partial charging (50-80%) sufficient for normal operation. This partial action approach provides adequate power availability while avoiding the harmful effects of excessive charge during storage.
Data Source
AI summary
The present invention provides a battery management device and a portable computer, the battery management device is for managing the rechargeable battery provided in a portable computer, the portable computer is provided with a charge circuit for charging a battery, the battery management device comprises: a discharge circuit for discharge the battery; a acquiring module for acquire the mode determining parameter; a first determining module for judging whether the battery storage mode is entered according to the mode determining parameter; a first control module for controlling the charge circuit or the discharge circuit to control the amount of electrical charge of the battery so that the amount of electrical charge of the battery is lower than the second amount of electrical charge threshold in the battery storage mode; the performance of the battery when deposited with the amount of electrical charge lower than the second amount of electrical charge threshold is better than the performance when deposited with the amount of electrical charge higher than the second amount of electrical charge threshold. The present invention alleviates the attenuation of the amount of electrical charge capacity of the rechargeable battery of the portable computer.