Battery Power Detection Using Time-Based Discharge Capacity
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Solution Overview
Problem
Existing electronic devices face challenges in accurately detecting the current power capacity of batteries due to fluctuations in battery voltage, leading to an illusion of backtracking of power capacity.
Innovation Solution
A calculation method and detection device that determine the current power capacity of a battery by receiving the highest and lowest voltage values, generating a unit voltage difference, and controlling the electronic device in different operation modes to obtain time lengths for the voltage to drop to the unit difference, thereby calculating the total discharge capacity and current power capacity based on these parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the current power capacity is determined directly based on battery voltage, then the detection method is simple, but the measurement precision deteriorates due to voltage fluctuations causing illusion of backtracking
Solution Approach 1:
The patent introduces time length as an intermediary parameter between battery voltage and power capacity. Instead of directly mapping voltage to power capacity, the system measures how long it takes for voltage to drop by a unit amount, then uses this time length to calculate power capacity. This intermediary measurement eliminates the direct coupling between transient voltage fluctuations and power capacity readings, resolving the backtracking illusion while maintaining operational simplicity through automated timing measurements.
2Device complexity
If the power capacity is calculated using only battery voltage, then the device complexity is low, but the reliability deteriorates due to voltage floating causing contradictory readings during discharge
Solution Approach 1:
The patent transitions from a static voltage-to-capacity mapping to a dynamic time-based measurement. The system continuously monitors voltage changes over time and calculates power capacity based on the rate of voltage decline rather than instantaneous voltage levels. This dynamic approach adapts to varying discharge conditions and loads, ensuring consistent and reliable power capacity readings even when voltage fluctuates during different operation modes.
Data Source
AI summary
A calculation method and a detection device for detecting a power capacity of a battery of an electronic device are provided. In the calculation method, a highest voltage value and a lowest voltage value of the battery are received. A unit voltage difference value is generated according to the highest voltage value and the lowest voltage value. A voltage value of the battery is converted into voltage value data, and the electronic device is controlled in an operation mode to obtain a time length required for the voltage value data to drop to the unit voltage difference value in the operation mode. A total discharge capacity of the battery is generated according to the time length and a use time interval of the electronic device in the operation mode, and a current power capacity is generated according to the total discharge capacity.