Battery State Detection Using Partial Discharge
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Solution Overview
Problem
Existing battery state detection methods are complex and costly, requiring numerous discharge-current intervals and equations, which complicates the estimation process and increases detection time.
Innovation Solution
A battery state detection method that presets discharge modes and conditions for partial discharge procedures, measuring initial and primary partial discharge data to estimate battery state, simplifying the detection process, reducing time, and lowering costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional battery state detection methods using multiple discharge-current intervals and equations are used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential parameters needed for battery state detection (terminal voltage and discharge current) from the complex conventional methods that require multiple intervals and equations. By taking out only the critical measurement points, the system achieves accurate detection while dramatically simplifying the detection process and reducing computational complexity.
2Measurement precision
If conventional battery state detection methods with multiple discharge-current intervals are used, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent applies preliminary action by pre-selecting specific discharge current intervals and terminal voltage points that are most informative for battery state detection. Instead of performing exhaustive measurements across all possible intervals, the system pre-determines the optimal measurement points, allowing rapid accurate detection without sacrificing precision.
3Measurement precision
If conventional battery state detection methods are used, then measurement precision is improved, but loss of energy increases
Solution Approach 1:
The patent applies partial action by performing only the minimum necessary measurements (terminal voltage at specific discharge current intervals) required to accurately determine battery state. Instead of conducting exhaustive discharge tests or continuous monitoring, the system performs selective partial measurements that consume minimal energy while maintaining high detection accuracy.
Data Source
AI summary
A battery state detection method includes: presetting at least one discharge method and at least one discharge condition of a battery set for estimating a battery state, with the discharge condition including a discharge voltage, discharge time or a relative battery impedance variation; executing a partial discharge procedure of the battery set and measuring partial discharge data; and directly calculating battery state data of the partial discharge data under the discharge method and the discharge condition. The battery state data include a SOH (state of health) datum, a SOC (state of charge) datum or a residual discharging time datum. The detection of the battery set is suitable for a manual operation system, a remote control monitoring system or an automatic scheduling system.