Battery Detection Method Using Voltage Calibration Curves
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Solution Overview
Problem
Current battery calibration methods are inefficient and non-universal, as they require individual calibration of each battery on a limited number of manufacturer-provided platforms, leading to inaccurate energy readings due to varying battery materials and hardware layouts, resulting in time-consuming processes and errors in charge and discharge efficiency.
Innovation Solution
A battery detection method involving selecting voltage calibration values within a preset interval, performing charge and discharge tests, and calibrating curves based on coulometer readings to obtain accurate energy values and adapt to various battery models without relying on manufacturer-specific platforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manufacturer-provided calibration platforms are used, then battery calibration can be performed, but the process is time-consuming and inefficient due to limited platform availability and sequential calibration requirements
Solution Approach 1:
The patent creates a universal calibration curve that can be applied across multiple battery models and manufacturers. Instead of requiring separate calibration platforms for each battery type, the system uses a single set of voltage calibration values (e.g., 16 values between 3.0V and 4.2V) that work universally. This eliminates the need for manufacturer-specific platforms and enables parallel calibration of multiple batteries simultaneously.
2Measurement precision
If individual battery calibration is performed on manufacturer platforms, then accurate battery parameters can be obtained, but the process is time-consuming due to sequential calibration of multiple batteries
Solution Approach 1:
The patent pre-establishes a universal calibration curve with predetermined voltage calibration values before actual battery calibration is needed. This preliminary calibration data can be stored and reused for multiple batteries simultaneously. When calibration is needed, the system can process multiple batteries in parallel using the pre-prepared calibration curve, dramatically reducing the time required compared to sequential calibration on limited platforms.
3Measurement precision
If calibration is performed on development platforms, then battery parameters can be obtained, but the parameters are not applicable to target operating platforms due to hardware layout differences
Solution Approach 1:
The patent develops a calibration methodology that produces universal calibration curves independent of specific hardware platforms. By using standardized voltage calibration values and a universal calculation formula, the same calibration data can be applied across different development platforms and target operating platforms. This eliminates the platform-specific limitation where calibration parameters obtained on one platform cannot be used on another.
4Productivity
If traditional coulometer-based calculation is used, then battery electric quantity can be calculated, but accuracy deteriorates due to charge and discharge efficiency losses not being considered
Solution Approach 1:
The patent incorporates feedback mechanisms by using actual voltage measurements during charge and discharge cycles to adjust and refine the calibration curve. The system continuously monitors the relationship between voltage and electric quantity, and uses this feedback to correct for efficiency losses. This creates a self-correcting system that accounts for charge and discharge efficiency variations, improving the accuracy of electric quantity calculations compared to simple coulometer-based methods.
Data Source
AI summary
The present invention relates to the technical field of battery detection, and in particular, to a battery detection method, comprising: step S1, selecting, within a preset voltage interval, a preset number of voltage calibration values according to a rated parameter of a battery; step S2, performing charge and discharge tests on the battery, and recording a coulometer reading and a charge and discharge curve, corresponding to each voltage calibration value, of the battery; and step S3, calibrating the charge and discharge curve on the basis of the coulometer readings. The technical solution can acquire an accurate battery charge and discharge curve, is not limited by the calibration platform provided by the manufacture, can adapt to various battery models, and has high reliability and real-time performance.