Multipoint Communication System for Battery Packs Using Distributed Antennas
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Solution Overview
Problem
Conventional battery management systems face challenges in scaling to large numbers of densely packed battery modules due to space constraints and susceptibility to communication cable failures and electromagnetic interference.
Innovation Solution
A multipoint communication system utilizing distributed antennas and an RF gateway for wireless communication between nodes and a controller, reducing the need for physical communication cables and enhancing reliability through signal shielding and electromagnetic compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional communication cables are used to connect each battery module to the controller, then communication between nodes and controller is established, but space constraints are violated and the system becomes susceptible to cable failures and electromagnetic interference
Solution Approach 1:
The patent replaces the mechanical cable-based communication system with a wireless communication system. Each battery module node communicates with the controller wirelessly through antennas, eliminating the need for physical communication cables throughout the battery pack. This substitution resolves the contradiction by maintaining communication reliability while eliminating cable routing complexity and associated failure points.
Solution Approach 2:
The patent extracts and removes the communication cables from the battery pack system. By eliminating the cables entirely and replacing them with wireless communication capabilities integrated into each node, the system achieves reliable communication without the space-consuming and failure-prone cable infrastructure.
2Ease of operation
If communication cables are routed throughout the battery pack to connect each module, then communication coverage is achieved, but space constraints and electromagnetic interference susceptibility increase
Solution Approach 1:
The patent substitutes wireless communication for cable-based communication, allowing each battery module node to transmit and receive signals wirelessly through integrated antennas. This eliminates the physical cables that would otherwise be susceptible to electromagnetic interference while maintaining complete communication coverage across all battery modules.
Solution Approach 2:
The patent introduces wireless electromagnetic waves as an intermediary medium for communication between battery nodes and the controller. This intermediary replaces the physical cable medium, enabling communication coverage throughout the battery pack without the harmful effects of cable-based electromagnetic interference and physical constraints.
3Reliability
If a large number of communication cables are installed for each battery module, then communication capability is maintained, but system reliability decreases due to cable failures
Solution Approach 1:
The patent replaces the cable-based communication infrastructure with wireless communication capabilities embedded in each battery node. This substitution eliminates the need for numerous physical cables throughout the battery pack, thereby removing the failure points associated with cable connections while maintaining reliable communication across all modules.
Solution Approach 2:
The patent extracts and removes all communication cables from the battery pack system. By eliminating the entire cable infrastructure and replacing it with wireless communication, the system achieves the desired communication capability without any cable-related failures or maintenance requirements.
4Productivity
If battery modules are densely packed to maximize energy density, then space utilization is improved, but cable routing becomes increasingly difficult and expensive
Solution Approach 1:
The patent replaces the cable routing infrastructure with wireless communication capabilities integrated into each battery node. This allows battery modules to be densely packed to maximize energy density without the manufacturing complexity of routing numerous cables through the compact battery pack structure. Each node communicates wirelessly, eliminating the need for cable access and routing during assembly.
Solution Approach 2:
The patent removes the cable routing requirement entirely from the battery pack design. By extracting the physical cable infrastructure and replacing it with wireless communication, the system enables maximum module density while eliminating the manufacturing difficulty and cost associated with cable routing in densely packed configurations.
Data Source
AI summary
A multipoint communication system for a battery management system includes a distributed antenna at least partially disposed within a battery pack, a plurality of nodes, each node being wirelessly coupled to the distributed antenna and configured to acquire battery information, and a radio frequency gateway electrically coupled to the distributed antenna.