Vehicle Battery Data Age Determination Using Real-Time Clock
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Solution Overview
Problem
Current traction battery management systems in vehicles lack real-time information, making it impossible to determine the age of stored data and accurately initialize filters and algorithms, leading to inadequate battery state detection and performance prediction.
Innovation Solution
A method utilizing a continuously active real-time clock to provide time information, allowing the determination of data age and enabling optimized initialization of filters and algorithms based on the age of recorded data, thereby improving status detection and performance prediction of traction batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a real-time clock is continuously active to provide time information, then measurement precision of data age is improved, but use of energy increases
Solution Approach 1:
The system uses periodic time-stamping of recorded data instead of continuous time tracking. The clock only needs to provide time information at discrete intervals when data is recorded, rather than continuously. This reduces energy consumption while maintaining the ability to determine data age with sufficient precision for battery management operations.
Solution Approach 2:
The system stores time information directly with the recorded data in non-volatile memory, making the data self-describing with its age information. When data is retrieved, its age can be determined by comparing the stored timestamp with current time, eliminating the need for continuous clock operation and complex time-tracking mechanisms.
2Reliability
If time information is stored with recorded data, then reliability of battery state detection is improved, but device complexity increases
Solution Approach 1:
The time information is merged directly with the battery data records in the same non-volatile memory storage. Each data record includes both the battery state information and its corresponding timestamp, creating a unified data structure. This integration simplifies the overall system architecture by eliminating separate time-tracking components and reducing data management complexity.
Solution Approach 2:
The time information is preliminarily attached to data records at the moment of recording, before any analysis or processing occurs. This preliminary timestamping ensures that time information is always available when needed, improving reliability of state detection without requiring complex real-time calculations or additional hardware components during operation.
Data Source
AI summary
The invention relates to a method and an assembly for data management in vehicles and to a related computer program and a related computer-readable storage medium, which can all be used in particular for controlling or regulating processes, components and/or devices of a motor vehicle having time-dependent states, in particular algorithms, which are sensitive to real time, such as algorithms for controlling or regulating chemical or electrochemical processes, for example. To this end, in the method for data management in vehicles, information is provided based upon which the age of data that were recorded during operation of the vehicle can be determined.