Battery Capacity Calibration Using Internal Resistance Feedback
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Solution Overview
Problem
Existing technologies struggle to efficiently adjust and manage full charge capacity information of batteries in electronic devices, leading to suboptimal battery performance and operational inefficiencies.
Innovation Solution
An electronic device is equipped with a battery, a load, a communication circuit, memory, and a processor that adjusts full charge capacity information by determining the internal resistance of the battery and comparing it to a threshold value, sharing state of charge (SOC) information with external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing technologies are used to manage battery full charge capacity information, then device complexity is reduced, but battery performance optimization and measurement precision deteriorate
Solution Approach 1:
The battery management system performs self-diagnosis by automatically measuring internal resistance and adjusting full charge capacity information without external intervention. The processor autonomously determines resistance values, compares them to thresholds, and recalibrates capacity data, enabling the system to self-optimize battery performance while maintaining operational simplicity.
Solution Approach 2:
The system implements a feedback mechanism where measured internal resistance values are continuously compared against threshold values, and full charge capacity information is dynamically adjusted based on this comparison. This closed-loop feedback ensures accurate battery state monitoring while automating the calibration process, resolving the contradiction between precision and complexity.
2Reliability
If internal resistance measurement and adjustment methods are implemented, then battery performance and SOC information accuracy are improved, but measurement and detection difficulty increases
Solution Approach 1:
The patent replaces complex physical measurement systems with electrical measurement methods. Instead of using sophisticated diagnostic equipment to measure internal resistance, the system uses standard voltage and current measurements during normal charging/discharging operations to calculate resistance values, significantly reducing measurement difficulty while maintaining reliability.
Solution Approach 2:
The system uses voltage and current measurements as intermediary parameters to indirectly determine internal resistance. Rather than directly measuring resistance which requires specialized equipment, the processor calculates resistance from easily obtainable voltage and current data during battery operation, simplifying the detection process while ensuring accurate battery performance assessment.
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 solution enables accurate adjustment of battery full charge capacity, enhancing battery performance and enabling efficient communication of SOC information with external devices.
Implementation Method 1
Batteries may alternate between charging and discharging
Implementation Method 2
a battery having an internal resistance
Data Source
AI summary
An electronic device is provided. The electronic device includes a battery, a load, a communication module configured to establish communication with an external device, and memory, including one or more storage media, storing instructions and a threshold resistance value, and at least one processor, comprising a processing circuit, communicatively coupled to the battery, the load, the communication circuit, and the memory, wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to supply a current to the load based on the battery being fully charged, determine the value of the internal resistance of the battery based on the current and a voltage, measured after the current is supplied to the load of the battery, adjust full charge capacity information about the battery based on a comparison between the determined value of the internal resistance and a threshold resistance value, and share, with the external device, state of charge (SOC) information about the battery determined based on the adjusted full charge capacity information.