Battery Management Communication Channel Switching for Real-Time Test Data
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Solution Overview
Problem
Existing battery management systems face challenges in efficiently transmitting a plurality of test information due to the need to transmit each piece of information individually, which can consume significant time, especially in applications requiring real-time data transmission.
Innovation Solution
A battery management apparatus and method that flexibly selects a communication channel based on the data amount and state of communication channels, using CAN and CAN FD channels to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each single piece of battery cell information is transmitted separately through a communication channel, then the information can be transmitted reliably, but the transmission time becomes excessively long and real-time monitoring cannot be achieved
Solution Approach 1:
The patent merges multiple separate data transmission operations into a single communication cycle. The transmitting side aggregates multiple battery cell parameters (voltage, current, temperature, etc.) into one data set, and the receiving side processes them collectively, reducing the number of communication cycles and total transmission time while maintaining data reliability
2Speed
If the data frame structure is changed to increase data amount (as in Patent Document 1), then communication speed improves, but the solution cannot be applied to devices requiring real-time battery cell information transmission
Solution Approach 1:
The patent implements dynamic communication mode switching between normal mode and sleep mode based on real-time system state. When battery cell monitoring is required, the system switches to normal mode for real-time data transmission. When monitoring is not required, it switches to sleep mode to reduce power consumption. This dynamic adaptation enables the system to meet both real-time monitoring requirements and power efficiency goals
3Productivity
If multiple communication channels are available, then transmission efficiency can be improved by selecting the optimal channel, but the device complexity increases
Solution Approach 1:
The patent implements self-service channel selection where the transmitting side autonomously determines the optimal communication channel based on the receiving side's current state and channel availability, without requiring complex coordination protocols. The transmitting side checks channel status, selects the most appropriate channel, and initiates transmission independently, simplifying the overall system architecture while maintaining high transmission efficiency
Data Source
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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.