Wireless Battery Management Proxy Broadcast for RF-Blocked Clusters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Some battery clusters in electric vehicles experience radio frequency interference or path loss, leading to unreliable reception of control data from network managers, which can cause battery malfunctions.
Innovation Solution
Implementing proxy broadcasting techniques where designated clusters act as intermediaries to retransmit control data to clusters that struggle with reliable reception, using redundant transmission in specified portions of a timeslot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If control data is transmitted directly from network manager to all battery clusters, then transmission speed is fast, but reception reliability deteriorates due to RF interference and path loss
Solution Approach 1:
The patent designates specific battery clusters as proxy broadcasters that act as intermediaries. These proxies receive control data from the network manager and retransmit it to other clusters, thereby mediating the communication to overcome direct transmission reliability issues caused by RF interference and path loss.
Solution Approach 2:
The patent segments the broadcast function by dividing the network into network managers, proxy broadcasters, and regular clusters. This segmentation allows the system to use multiple transmission paths through different proxies, improving reliability while maintaining efficient data distribution.
2Reliability
If proxy broadcasting is implemented to improve reception reliability, then communication reliability improves, but device complexity increases
Solution Approach 1:
Battery clusters that serve as proxies perform multiple functions: they act as both regular battery nodes and as relay stations. This multi-functionality reduces the need for separate dedicated relay devices, thereby improving communication reliability without proportionally increasing system complexity.
Solution Approach 2:
The system uses existing battery clusters to provide the proxy broadcasting function rather than introducing new dedicated infrastructure. The clusters self-organize into proxy roles based on their communication capabilities, allowing the system to improve reliability using its own resources without adding external complexity.
3Reliability
If control data is retransmitted multiple times in a timeslot, then communication reliability improves, but time efficiency deteriorates
Solution Approach 1:
The patent structures the timeslot with periodic transmission phases where control data is sent in the first portion and retransmitted in the second portion. This periodic structure ensures reliable delivery through multiple opportunities while maintaining efficient use of the timeslot by clearly defining transmission windows.
Solution Approach 2:
The control data is transmitted in the first portion of the timeslot before the battery clusters need to act on it. This preliminary transmission allows clusters to receive and process the data in advance, with retransmission in the second portion serving as a reliability backup without delaying the control action.
Data Source
AI summary
Proxy broadcasting techniques for a wireless battery management system can improve communication performance by designating a subset of clusters to serve as proxy broadcasters for another subset of clusters that are experiencing issues with reliably receiving control data from network managers. The techniques can include having two network managers broadcasting the control data in specified portions of a timeslot. The designated proxy broadcasters can receive the control data in a first portion of a timeslot and transmit the received control data to bad clusters in a second portion of the same timeslot.