Battery Communication Fault Classification for Rack-Module BMS
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Solution Overview
Problem
Existing battery communication systems fail to effectively identify and differentiate types of communication failures between rack and module battery management parts, leading to inefficiencies in data transmission and management.
Innovation Solution
A battery communication management device and method that utilizes a microcontroller and interface converter connected in a serial peripheral interface, enabling differential communication failure identification through cyclic redundancy checks and threshold-based initialization or shutdown of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If communication failure types are not differentiated, then system complexity is reduced, but communication failure time increases and management efficiency decreases
Solution Approach 1:
The patent segments communication failure detection into multiple levels: basic connectivity detection, CRC error detection, and response time detection. Each level corresponds to a specific failure type (connection failure, data transmission failure, module unresponsiveness), allowing targeted recovery actions for each segment of the communication problem.
Solution Approach 2:
The system implements feedback mechanisms through CRC checks on transmitted and received packets, and through monitoring whether modules respond within expected timeframes. This feedback enables the master control unit to identify specific failure types and trigger appropriate recovery procedures, reducing overall communication failure time.
2Reliability
If cyclic redundancy checks are implemented for each packet, then data transmission reliability is improved, but communication overhead increases
Solution Approach 1:
The patent applies CRC checks selectively rather than universally - performing CRC verification on critical control packets and status packets, while using simpler acknowledgment mechanisms for less critical data. This partial application maintains reliability for essential communications while reducing overall overhead.
Solution Approach 2:
The system changes the parameter of error detection intensity based on communication context - using full CRC for control commands, simplified checks for status updates, and timeout-based detection for presence verification. This adaptive approach balances reliability requirements with communication efficiency.
Data Source
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AI summary
A battery communication management device, including a rack battery management part including a microcontroller and an interface converter, and a plurality of module battery management parts in serial connection with the rack battery management part and managed by the rack battery management part, wherein each of the plurality of module battery management parts manages a battery module, each of the plurality of module battery management parts includes an analog front end, and the microcontroller determines a type of communication failure between the rack battery management part and the plurality of module battery management parts.