Charger-Based Battery Data Backup for Post-Fire Event Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing secondary battery management systems (BMS) often burn down during major fires, making it difficult to analyze and estimate the cause of the event.
Innovation Solution
A secondary battery charging system that transmits battery state and event-related information to a charger for backup data, allowing easy analysis and estimation of events by continuously updating data to the charger instead of the BMS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery state information is stored only in the BMS, then the BMS can monitor and control battery operations, but the data is lost when the BMS burns down during a fire
Solution Approach 1:
The patent implements preliminary action by continuously transmitting battery state information from the BMS to the charger before any fire event occurs. This ensures that data is pre-positioned in a safe location (the charger) that is spatially separated from the battery pack, so that even if the BMS is destroyed during a fire, the data remains available for post-event analysis.
2Loss of information
If data is continuously transmitted to the charger, then data backup is achieved for fire analysis, but communication bandwidth and power consumption increase
Solution Approach 1:
The patent implements periodic action by transmitting battery state information at regular intervals rather than continuously. The BMS periodically sends data packets containing battery state information to the charger, which reduces the overall communication bandwidth requirements and power consumption compared to continuous transmission, while still ensuring that up-to-date data is available for fire analysis.
Data Source
AI summary
A secondary battery charging system includes: an application including a battery and a battery management system (BMS); and a charger configured to supply charging power to the battery and to communicate with the application. Data related to at least one of the battery and the application is transmitted to the charger.