Dynamic Battery Charging Control for Temperature Management
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Solution Overview
Problem
Conventional battery charging methods either prioritize speed over battery life or complexity over efficiency, failing to dynamically adjust charging modes based on battery state, leading to suboptimal charging performance in terms of speed and temperature management.
Innovation Solution
A charging control apparatus and method that uses a processing unit and memory to dynamically select between charging modes based on battery voltage, capacity, and temperature, temporarily stopping charging when temperature thresholds are exceeded, and adjusting currents to prevent overheating and ensure full charge detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If constant current charging method is used to charge the battery, then the charging speed is improved and charging time is reduced, but the battery temperature rises significantly resulting in lower battery life
Solution Approach 1:
The patent implements dynamic charging mode selection that adjusts charging parameters based on real-time battery state monitoring. The system transitions from static constant current charging to dynamic adaptive charging where the charging mode (constant current or constant voltage) is selected based on battery voltage, remaining capacity, and temperature conditions, thereby optimizing both charging speed and temperature control
Solution Approach 2:
The patent changes charging parameters (current, voltage, mode) based on battery state. The processing unit monitors battery voltage, remaining capacity, and temperature, then adjusts charging parameters accordingly - using constant current mode when battery needs fast charging and constant voltage mode when temperature control is prioritized, thus resolving the contradiction between charging speed and temperature management
2Device complexity
If constant voltage charging method is used to charge the battery, then the circuit design is simple, but the charging speed is slow and charging time increases
Solution Approach 1:
The system dynamically selects between constant voltage and constant current charging modes based on battery state. When the battery requires faster charging (based on voltage and capacity thresholds), the system switches to constant current mode, thereby maintaining simple circuit design while improving charging speed through intelligent mode selection
Solution Approach 2:
The charging control apparatus is designed to perform multiple charging functions using the same circuit - it can operate in both constant voltage mode and constant current mode, making the circuit universally applicable to different charging scenarios and battery states without requiring separate dedicated circuits for each mode
3Productivity
If pulse charging method is used to charge the battery, then the charging efficiency is improved and battery life is extended, but the cost increases and implementation becomes more difficult
Solution Approach 1:
The patent implements periodic charging interruptions where charging is temporarily stopped and then resumed. This periodic action allows the battery to dissipate heat and recover, improving charging efficiency and extending battery life while maintaining relatively simple implementation through basic control logic that monitors temperature and resumes charging when conditions permit
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for efficient and safe battery charging by automatically selecting modes that balance speed and battery longevity, reducing temperature rise and extending battery life while optimizing charging efficiency.
Implementation Method 1
determine at least one temperature difference value based on temperature values of the battery set at different times obtained from the battery management unit
Implementation Method 2
perform charging control based on a first charging mode or a second charging mode on the battery set
Data Source
AI summary
A charging control method includes the following. (a) An electrical state of a battery set is obtained. (b) Whether the electrical state is greater than a first electrical state threshold is determined and charging control based on a first charging mode or a second charging mode on the battery set is performed accordingly. (c) During the charging control on the battery set, at least one temperature difference value is determined based on temperature values of the battery set at different times. (d) Whether the temperature difference value is greater than a first temperature difference threshold is determined and whether to temporarily stop or continue the charging is determined accordingly. (e) During the charging control on the battery set, the electrical state is obtained, and whether the electrical state satisfies a fully-charged criterion is determined and whether to stop or continue the charging control is determined accordingly.