Battery Monitoring Bridge for Low-Power Anomaly Detection
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Solution Overview
Problem
Existing battery monitoring systems face challenges in equalizing power consumption across battery modules, leading to increased power consumption and inefficiencies in anomaly detection during low power consumption modes.
Innovation Solution
A battery monitoring system with a communication bridge that operates in a low power consumption mode, autonomously activating monitoring circuits to acquire data and determine anomalies, minimizing power consumption variations by averaging activation times and reducing the need for microcomputer intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the microcomputer monitors the battery during normal operation, then the battery state is accurately monitored, but power consumption increases
Solution Approach 1:
The system dynamically switches between two monitoring modes: normal mode where the microcomputer monitors battery state, and low power mode where the communication bridge autonomously monitors. This dynamic switching resolves the contradiction by adapting the monitoring approach to current power constraints while maintaining necessary monitoring functions.
Solution Approach 2:
The communication bridge is designed to autonomously activate monitoring circuits and determine anomalies without microcomputer intervention during low power modes. This self-service capability allows the system to maintain battery monitoring functionality while the microcomputer remains in sleep mode, significantly reducing power consumption.
2Use of energy by moving object
If the communication bridge activates monitoring circuits autonomously from low power consumption mode, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The monitoring system is segmented into two functional parts: the microcomputer that handles normal operation monitoring, and the communication bridge that handles autonomous monitoring during low power modes. This segmentation allows each component to have specialized, simplified functionality rather than requiring one component to handle all functions, thus managing complexity while enabling low power operation.
Solution Approach 2:
The communication bridge acts as an intermediary between the sleeping microcomputer and the monitoring circuits. It receives instructions from the microcomputer, autonomously activates monitoring circuits, acquires data, and reports anomalies back to the microcomputer. This intermediary role allows the microcomputer to sleep while maintaining monitoring capabilities through the communication bridge's autonomous operations.
3Reliability
If multiple monitoring circuits are used to monitor battery modules, then monitoring coverage is improved, but power consumption variations between battery modules increase
Solution Approach 1:
The communication bridge activates monitoring circuits periodically at predetermined intervals rather than continuously. This periodic activation equalizes power consumption across all battery modules by ensuring each monitoring circuit is activated for the same duration and frequency, thus maintaining comprehensive monitoring coverage while eliminating power consumption variations between modules.
Data Source
AI summary
A battery monitoring system of a battery having multiple battery cells, includes: multiple monitoring circuits each of which is connected in series via a communication path and uses a power of a battery module to acquire data relating to the battery module; a microcomputer that monitors the battery during a normal operation; and a communication bridge that is connected to the monitoring circuits via the communication path and transitions to a low power consumption mode when the microcomputer is in a sleep mode. The communication bridge includes: an instruction unit that activates from the low power consumption mode autonomously from the microcomputer using a power source different from the battery module and issues an instruction to acquire the data; an acquisition unit that acquires the data from the monitoring circuits; and a determination unit that determines whether the battery is in an anomaly state.