Battery Monitoring IC Communication Conversion for Stable Data Collection
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Solution Overview
Problem
The increase in the amount and types of sensing data in battery management systems reduces efficiency and stability in collecting and processing data, affecting battery safety.
Innovation Solution
A battery management apparatus with a cell monitoring unit, battery management unit, and interface ICs that perform communication conversion operations to facilitate stable data transmission and collection, using a daisy chain method for efficient data exchange among multiple battery modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount and types of sensing data in battery management systems are increased, then battery safety monitoring capability is improved, but data collection and processing efficiency deteriorates
Solution Approach 1:
The battery management system is segmented into multiple functional ICs: cell monitoring IC for voltage sensing, auxiliary management IC for additional sensing data, and interface IC for communication coordination. This segmentation allows each IC to handle specific data types efficiently, preventing bottlenecks in data collection while maintaining comprehensive safety monitoring through multiple sensing channels
Solution Approach 2:
The interface IC acts as an intermediary between the cell monitoring IC, auxiliary management IC, and master controller. It performs communication conversion operations to coordinate data flow from multiple sources, ensuring efficient data aggregation without overwhelming any single component, thus maintaining processing efficiency while collecting diverse sensing data
2Reliability
If multiple types of sensing data are collected from battery modules, then comprehensive battery safety monitoring is achieved, but system complexity increases
Solution Approach 1:
The interface IC performs multiple functions including communication conversion, data aggregation from multiple ICs, and coordination with the master controller. This multi-functionality reduces the need for separate dedicated components for each task, thereby achieving comprehensive safety monitoring through a unified interface that manages diverse sensing data without proportionally increasing system complexity
Solution Approach 2:
Multiple sensing functions (voltage monitoring, auxiliary sensing) are merged into a coordinated system where the interface IC consolidates data from different ICs before transmitting to the master controller. This merging approach integrates comprehensive monitoring capabilities while presenting a simplified interface to the master controller, reducing the perceived system complexity
Data Source
AI summary
A battery management apparatus includes a cell monitoring unit including a battery monitoring integrated circuit (IC) configured to generate first sensing data of a battery module, and a battery management unit communicatively coupled to the cell monitoring unit and including: a master controller in communication with the battery monitoring IC; and an interface IC configured to perform a communication conversion operation for communication between the battery monitoring IC and the master controller. The cell monitoring unit further includes a battery auxiliary management unit disposed in the battery module. The battery monitoring IC is further configured to perform a communication conversion operation to facilitate communication between the battery auxiliary management unit and the interface IC.