Battery Parameter Map Updating for Deterioration-Aware Management
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Solution Overview
Problem
Existing battery management systems fail to effectively update parameter maps based on specific parameter values determined by parameter determination logic, leading to inefficiencies in battery management and potential deviations from actual battery characteristics due to battery deterioration.
Innovation Solution
A battery management system and method that updates a parameter map by determining the latest values of specific parameters, using these values to update target and expansion map values within the parameter map, thereby reflecting changes in battery characteristics over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a parameter map is used to determine battery parameters, then the battery management system can operate efficiently with pre-stored data, but the parameter map becomes inaccurate over time due to battery deterioration
Solution Approach 1:
The patent implements a feedback mechanism where the determined third parameter value is fed back to update the parameter map. The controller compares the determined third parameter with the map value from the parameter map, calculates a correction value, and updates the parameter map to reflect actual battery characteristics, thereby resolving the accuracy degradation issue while maintaining operational efficiency
Solution Approach 2:
The patent dynamically changes the parameter map based on battery state. Instead of using a static parameter map, the system updates the parameter map values according to the determined battery parameters and correction values, allowing the parameter map to adapt to battery deterioration and maintain accuracy throughout the battery lifecycle
2Measurement precision
If the parameter map is updated frequently to maintain accuracy, then the parameter map reflects current battery characteristics, but the computational load and system complexity increase
Solution Approach 1:
The patent applies local quality by updating only the specific third parameter values in the parameter map that correspond to the current battery state, rather than updating the entire parameter map. This targeted approach maintains accuracy where needed while minimizing unnecessary computational operations and system complexity
Solution Approach 2:
The patent performs partial action by updating only the necessary parameter map entries based on the current operating conditions and determined parameters. The correction is applied selectively to maintain accuracy without performing exhaustive updates across all parameter map entries, thereby reducing computational overhead
Data Source
AI summary
A battery management system according to the present disclosure includes: memory; and a controller configured to execute a parameter acquisition procedure to determine respective latest values of a first parameter, a second parameter, and a third parameter associated with a current state of a battery. The controller is further configured to: call a parameter map from the memory, the parameter map recording a correspondence relationship of the third parameter relative to the first and second parameters; and execute a map update procedure to update the parameter map based on the respective latest values of the first, second, and third parameters