Standardized CAN Communication Protocol for Battery Systems
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Solution Overview
Problem
Existing CAN communication methods require a unique communication protocol for each power management device, leading to inefficiencies and challenges in managing and expanding battery systems.
Innovation Solution
A standardized CAN communication protocol is implemented by allocating specific bit ranges for use classification, target classification, and data number classification within the CAN ID, allowing for standardized ID allocation and efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a unique communication protocol is developed for each power management device, then communication compatibility is improved, but system complexity and development time increase
Solution Approach 1:
The patent applies universality by creating a standardized CAN communication protocol that can be used across multiple power management devices and battery systems. The protocol defines universal message formats, ID allocation rules, and communication procedures that work across different devices, eliminating the need to develop unique protocols for each device while maintaining communication compatibility
Solution Approach 2:
The patent segments the CAN ID space into specific ranges for different purposes (e.g., 0x000-0x1FF for battery management messages, 0x200-0x3FF for power management messages). This segmentation allows the standardized protocol to organize communications efficiently while maintaining scalability and reducing complexity through structured ID allocation
2Adaptability or versatility
If battery systems are expanded with more devices, then system capability is improved, but protocol configuration complexity increases
Solution Approach 1:
The standardized protocol enables universal communication across expanded battery systems by defining consistent message formats and ID allocation rules that work regardless of system size. New devices can be integrated without requiring custom protocol development, maintaining expandability while controlling configuration complexity through standardization
Solution Approach 2:
The patent uses parameter changes by allocating specific CAN ID ranges and message format parameters that can accommodate system expansion. The protocol allows dynamic addition of devices within the predefined ID space and message structure, enabling scalability without changing the fundamental protocol parameters
3Measurement precision
If separate protocol settings are required for each device, then communication precision is improved, but setup time and operational complexity increase
Solution Approach 1:
The patent applies parameter changes by defining specific CAN ID ranges, message formats, and communication parameters in the standardized protocol. These predefined parameters ensure precise communication while eliminating the need for manual configuration, improving both communication precision and setup ease through standardization
Data Source
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AI summary
Generating a CAN ID represented by a predetermined bit used in CAN communication, including a first bit allocation process for allocating N-th to M-th bits of the CAN ID for use classification, a second bit allocation process for allocating O-th to P-th bits of the CAN ID for target classification, and a third bit allocation process for allocating Q-th to R-th bits of the CAN ID for data number classification (N, M, O, P, Q and R are integers and satisfy a relation of R>Q, P>O, M>N, N>P, O>R).