Smart Battery Charge Thresholds Based on Temperature Feedback
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Solution Overview
Problem
The lifespan, performance, and safety of battery devices are affected by operating temperature and charging/discharging current, and existing technologies lack effective management strategies to optimize these factors.
Innovation Solution
A smart battery device equipped with a temperature-sensing unit and processing unit that generates an indication flag for full charge state based on ambient temperature, and a current-sensing unit that adjusts operations according to discharging current, ensuring optimal charging and discharging conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery is charged to full capacity without temperature consideration, then charging speed is improved, but battery safety and lifespan deteriorate
Solution Approach 1:
The patent dynamically adjusts the full capacity threshold parameter based on temperature conditions. When temperature exceeds a predetermined threshold, the full capacity is reduced, preventing overcharging at high temperatures. This parameter adaptation resolves the contradiction by modifying the charging termination criterion according to thermal conditions, ensuring safety without completely sacrificing charging efficiency.
Solution Approach 2:
The patent implements temperature monitoring feedback during charging operations. The temperature-sensing unit continuously measures battery temperature, and the processing unit uses this feedback to adjust charging parameters in real-time. When temperature rises, the system feedback-adjusts the full capacity threshold, creating a closed-loop control that prevents safety issues while maintaining optimal charging speed within safe temperature ranges.
2Reliability
If temperature-based full capacity adjustment is implemented, then battery safety is improved, but device complexity increases
Solution Approach 1:
The processing unit performs multiple functions: it manages standard charging operations, monitors temperature, determines full capacity based on temperature conditions, and controls charging termination. By consolidating these functions in a single processing unit rather than adding separate dedicated circuits for each function, the patent achieves temperature-based safety control without proportionally increasing system complexity.
Solution Approach 2:
The patent combines the temperature-sensing unit with the existing charging control system. The temperature sensing capability is integrated into the charging management architecture, and the full capacity determination logic is merged with the existing charging control algorithms. This integration approach allows temperature-based safety control to be implemented without adding completely separate, independent subsystems.
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
The smart battery device effectively manages battery health by preventing overcharging and over-discharging, thereby increasing lifespan, performance, and safety across varying temperatures and currents.
Implementation Method 1
The temperature-sensing unit is configured to sense the ambient temperature to generate a temperature signal
Data Source
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AI summary
A smart battery device includes a battery unit, a temperature-sensing unit and a processing unit. The temperature-sensing unit senses the ambient temperature to generate a temperature signal. The processing unit is coupled to the battery unit and the temperature-sensing unit. In a charging mode, the processing unit receives the temperature signal and obtains the power capacity of the battery unit. The processing unit sets full capacity according to the temperature signal and generates an indication flag when the power capacity of the battery unit reaches the full capacity, wherein the indication flag is used to indicate that the battery unit is in a fully charged state.