Battery Control Apparatus Voltage Adjustment for Expansion
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Solution Overview
Problem
Rechargeable batteries deteriorate rapidly when exposed to high temperatures and prolonged full charges, leading to increased aging and potential device damage due to battery expansion.
Innovation Solution
A battery control method and apparatus that adjusts the charging voltage based on ambient temperature, using a temperature sensing unit, timing unit, and computing unit to accumulate a time parameter and reduce the charging voltage when a threshold is reached, thereby slowing aging and reducing expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is fully charged for a long time in high temperature environment, then the charging voltage is maintained high, but the battery aging rate increases and battery expansion occurs
Solution Approach 1:
The patent changes the charging voltage parameter dynamically based on temperature conditions and charging duration. When temperature exceeds the first threshold and charging time exceeds the second threshold, the charging voltage is reduced from the first voltage value to the second voltage value, thereby reducing battery expansion and aging while maintaining controlled charging
Solution Approach 2:
The patent implements periodic monitoring of charging time and temperature, with conditional voltage adjustment at specific thresholds. The charging process is divided into stages based on time accumulation, and voltage is adjusted periodically when both temperature and time thresholds are exceeded, creating a controlled periodic action pattern
2Reliability
If the charging voltage is reduced to extend battery life, then battery aging rate decreases, but charging speed may be affected
Solution Approach 1:
The patent dynamically adjusts charging voltage based on real-time temperature and charging duration conditions. The charging voltage transitions from a first voltage value to a second voltage value only when specific conditions are met (temperature > first threshold AND charging time > second threshold), allowing optimal charging speed under normal conditions while protecting the battery under stress conditions
Solution Approach 2:
The patent applies different charging voltage levels to different charging scenarios. Normal charging conditions use the first voltage value for faster charging, while high-temperature prolonged charging conditions use the second voltage value for battery protection, creating localized quality adjustment based on specific operating conditions
Data Source
AI summary
A battery control method and a battery control apparatus are provided. The battery control method includes the following steps. Whether a charging voltage value of a battery is greater than a voltage threshold is determined. When the charging voltage value is greater than the voltage threshold, a battery temperature of the battery is obtained. When the battery temperature is less than a first temperature, a time parameter is accumulated according to a first accumulating rate. When the time parameter reaches a time threshold, the charging voltage value of the battery is reduced.