Battery Test Data Channel Selection for Faster BMS Transmission
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Solution Overview
Problem
Existing battery management systems face challenges in efficiently transmitting battery test information due to the need for real-time data transmission in devices like electric vehicles, where current communication techniques are inefficient and consume significant time.
Innovation Solution
A battery management apparatus and method that selectively chooses a communication channel based on the data amount and state of the communication channels, generating message packets with packet size and identification information to optimize transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If each single piece of battery cell information is transmitted separately through a communication channel, then the communication protocol is simple and easy to implement, but the transmission time for multiple test information items becomes excessively long
Solution Approach 1:
The patent combines multiple separate battery cell information items (voltage, temperature, current, etc.) into a single aggregated data packet for transmission. Instead of sending each parameter individually through separate communication frames, the system packs multiple test information items together in one transmission unit, thereby reducing the total number of communication cycles and significantly decreasing overall transmission time while maintaining protocol simplicity.
Solution Approach 2:
The patent introduces a new dimensional approach by organizing battery cell information in a matrix structure where multiple parameters are arranged in rows and columns, allowing parallel transmission of multiple data items within a single communication frame. This dimensional reorganization enables the system to transmit n pieces of information simultaneously rather than sequentially, effectively transforming a time-series transmission problem into a spatial packing problem.
2Speed
If multiple communication channels are used to transmit battery test information in parallel, then the transmission speed increases, but the system complexity and difficulty of managing communication channels increases
Solution Approach 1:
The patent implements a dynamic communication channel selection mechanism where the system automatically chooses between a single-channel sequential transmission mode and a multi-channel parallel transmission mode based on real-time conditions such as data volume, channel availability, and priority levels. This dynamic adaptability allows the system to achieve high transmission speeds when needed while avoiding unnecessary complexity in normal operating conditions, as the system only activates multiple channels when the aggregated data packet size exceeds a threshold or when high-priority transmission is required.
3Productivity
If all battery test information is aggregated into a single large data packet, then transmission efficiency improves by reducing the number of communication cycles, but the risk of data loss and transmission errors increases
Solution Approach 1:
The patent applies segmentation by dividing the aggregated battery test information into multiple sub-packets or blocks within the overall transmission unit. Each sub-packet contains a specific subset of parameters (e.g., voltage data in one block, temperature data in another), allowing selective retransmission of only the erroneous segments if an error occurs, rather than requiring retransmission of the entire large data packet. This segmented structure maintains high transmission efficiency while improving reliability through localized error handling.
Solution Approach 2:
The patent implements a feedback mechanism where the receiving end sends acknowledgment signals for each successfully received data packet or sub-packet. If transmission errors are detected through checksum verification or other error detection codes, the receiver requests retransmission of specific problematic segments. This feedback loop ensures data integrity while maintaining high overall transmission efficiency, as only erroneous portions need to be resent rather than the entire data set.
Data Source
AI summary
A battery management apparatus according to an embodiment of the present disclosure includes: a communication unit configured to output test information related to a battery; and a control unit configured to generate at least one test information related to the battery, select any one communication channel among a plurality of communication channels based on any one of a data amount of the generated test information and a state of the plurality of communication channels, generate a message packet including the test information based on a type of the selected communication channel and the data amount of the generated test information, and output the generated message packet to the selected communication channel through the communication unit.