Battery Data Transmission with Adaptive Encoding Under Path Abnormalities
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Solution Overview
Problem
Existing battery management systems in hybrid and electric vehicles face challenges in maintaining robust communication due to transmission errors caused by metals, high currents, and disturbances, which deteriorate communication quality and increase the risk of short circuits.
Innovation Solution
A management device and battery data transmission system that includes an abnormality detection unit to switch between normal and abnormal encoding modes, reducing data length during transmission errors, ensuring reliable data transmission by shortening encoded data when abnormalities are detected in the transmission path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data length is reduced to improve transmission reliability in error-prone conditions, then communication robustness is improved, but information completeness deteriorates
Solution Approach 1:
The encoding mode is dynamically switched between normal mode (first mode) and abnormal mode (second mode) based on transmission path conditions. When abnormalities are detected, the system transitions to the second mode with shorter data length to maintain transmission reliability, while switching back to the first mode when conditions improve, thus adaptively balancing reliability and information completeness
Solution Approach 2:
The data length parameter of the encoded data is changed based on transmission conditions. In the first mode, data is encoded with full length to preserve information completeness, while in the second mode triggered by abnormalities, the data length is shortened to improve transmission reliability through reduced error probability
2Reliability
If data length is shortened to reduce transmission errors, then communication robustness is improved, but data precision deteriorates
Solution Approach 1:
The encoding precision is dynamically adjusted based on transmission path stability. During normal operation, the system uses the first mode with higher precision encoding. When abnormalities are detected, it switches to the second mode with reduced precision but shorter data length, maintaining robustness while accepting temporary precision reduction only when necessary
3Reliability
If encoding mode is switched to shorten data length during abnormalities, then transmission reliability is improved, but system complexity increases
Solution Approach 1:
The system incorporates dynamic mode switching capability with an abnormality detection unit that monitors transmission path conditions and triggers appropriate encoding mode changes. This adds control logic complexity but enables adaptive response to transmission conditions, improving reliability through automated switching between first mode (normal) and second mode (abnormal)
Solution Approach 2:
The encoding system performs self-adjustment by automatically detecting transmission abnormalities and switching to the appropriate encoding mode without external intervention. The abnormality detection unit and mode switching mechanism enable the system to serve itself by adapting to changing conditions, reducing the need for external control while improving transmission reliability
Data Source
AI summary
A management device includes: a transmission control unit that communicates with a battery data transmission device that transmits encoded data, which is obtained by encoding battery data which is data regarding a battery, via a transmission path; an abnormality detection unit that detects an abnormality of the transmission path; and a command unit that outputs, to the battery data transmission device, a command to shorten a data length of the encoded data when the abnormality detection unit detects the abnormality of the transmission path.