Battery Rack Data Buffering During BMS Communication Failure
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Solution Overview
Problem
Existing energy storage systems face data loss due to transmission failures in communication between battery management systems, particularly when fires or unexpected failures occur, leading to the loss of critical measurement data.
Innovation Solution
The system employs a communication conversion device that stores measurement data when a failure flag is activated, allowing an external controller to read and analyze the stored data, ensuring dual management and preventing data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement data is transmitted from the communication conversion device to the server, then data can be stored and analyzed, but data loss occurs when transmission fails due to fire or unexpected failure
Solution Approach 1:
The communication conversion device performs preliminary action by storing measurement data locally before transmission to the server. When transmission fails, the data is already secured in the communication conversion device's storage, preventing data loss. This advance preparation ensures data safety regardless of transmission outcomes.
Solution Approach 2:
The system creates a copy of the measurement data in the communication conversion device's storage as a backup. The original data from sensors is copied to local storage before being transmitted to the server, ensuring that even if transmission fails, a copy remains safely stored and can be retrieved or retransmitted.
2Reliability
If dualization method of measurement data is implemented, then data loss is prevented, but device complexity increases
Solution Approach 1:
The communication conversion device is designed with multi-functionality, serving both as a communication interface between sensors and server, and as a data storage device. This universal device handles multiple functions (data reception, conversion, storage, and transmission) within a single component, reducing overall system complexity while maintaining data security through dualization.
Data Source
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AI summary
The present invention provides an energy storage system including a rack BMS that outputs measurement data and a failure flag of a battery rack including a plurality of battery cells, a communication conversion device that receives the measurement data and the failure flag from the rack BMS, subjects the measurement data to communication conversion, and outputs the measurement data, and a server that receives the measurement data from the communication conversion device, in which the communication conversion device stores the measurement data according to activation of the failure flag, and a method of operating the same.