Battery Supervisory Control with Merged Wireless Commands
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Solution Overview
Problem
In battery management systems, especially for hybrid, plugin hybrid, and electric vehicles, existing satellite-type supervisory circuits face issues with data validity when response data from battery monitoring tasks is not received within the control period, leading to accumulation of invalid data.
Innovation Solution
A control apparatus that wirelessly communicates with supervisory apparatuses to integrate and transmit multiple commands at set control periods, ensuring timely acquisition and transmission of battery information, thereby maintaining data validity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple commands are transmitted separately in satellite-type supervisory circuits, then each command can be processed individually, but communication time exceeds the control period causing data invalidation
Solution Approach 1:
The patent combines multiple commands into a single integrated command packet that is transmitted in one communication cycle. This merging of multiple separate commands into one unified transmission reduces the total communication time to within the control period, preventing data invalidation while maintaining individual command processing capability through internal command structure
2Reliability
If communication frequency is increased to maintain data validity, then data freshness is improved, but communication load and system complexity increase
Solution Approach 1:
The patent implements periodic command transmission synchronized with the control period, where integrated commands are transmitted at regular intervals matching the control cycle. This periodic approach ensures data freshness without requiring excessive communication frequency, as the single integrated command covers the entire control period duration
Solution Approach 2:
By merging multiple commands into one transmission unit, the system reduces the number of communication events required, thereby lowering communication load and system complexity while maintaining data validity throughout the control period
Data Source
AI summary
A control apparatus performing a wireless communication with a supervisory apparatus that acquires battery information indicating a battery state and transmits the acquired battery information, and controlling the supervisory apparatus based on the battery information. The control apparatus includes a wireless communication unit that wirelessly transmits a plurality of commands which are combined to the supervisory apparatus corresponding to a control period set for a control of monitoring the battery state.