Dual Antenna Node Substrate for Wireless Battery Pack Control
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Solution Overview
Problem
Current battery management systems face challenges with complex wiring, high mass production costs, quality, and reliability issues due to RF wireless communication interference and high node density, which also result in higher latency with daisy chain topology.
Innovation Solution
A wireless communication system is designed with a control substrate and energy storage devices, each equipped with a node substrate featuring dual antenna circuits for receiving control messages and transmitting reply messages, reducing latency and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If RF wireless communication is used to avoid complex wiring, then ease of manufacture and reliability are improved, but signal interference problems occur
Solution Approach 1:
The wireless communication system segments the communication function by assigning dedicated antenna circuits to specific nodes. Each node substrate has its own first and second antenna circuits for receiving control messages and transmitting reply messages respectively, which segments the RF spectrum usage and reduces interference between adjacent nodes in the battery pack.
Solution Approach 2:
The patent introduces an intermediary approach by using node substrates as intermediate communication units between the control substrate and energy storage elements. Each node substrate acts as a mediator that receives control messages via its first antenna circuit and transmits reply messages via its second antenna circuit, reducing direct interference between master-slave nodes.
2Object-affected harmful factors
If daisy chain topology is used to reduce interference, then signal interference is reduced, but latency increases
Solution Approach 1:
The patent transitions from a one-dimensional daisy chain topology to a two-dimensional communication architecture where multiple node substrates can simultaneously communicate with the control substrate through dedicated antenna circuits. This dimensional change allows parallel communication paths, reducing latency while maintaining interference reduction benefits through spatial separation of antenna circuits.
Solution Approach 2:
The control substrate performs preliminary actions by broadcasting control messages to all adjacent node substrates simultaneously through the first antenna circuits before any reply messages are transmitted. This preliminary broadcast action reduces the overall communication time by eliminating sequential waiting periods inherent in daisy chain topologies.
3Productivity
If each battery unit has its own measure circuit board for automated measurement, then productivity is improved, but device complexity increases
Solution Approach 1:
The node substrate serves multiple functions: it acts as both the measurement interface for the energy storage element and the wireless communication unit. By integrating the measurement circuit board functionality into the node substrate that already contains the antenna circuits, the patent avoids adding separate measurement devices while maintaining automated measurement capability, thus improving productivity without significantly increasing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces latency and interference by using dual antenna circuits for efficient communication between the control substrate and energy storage devices, improving the reliability and cost-effectiveness of battery management systems.
Implementation Method 1
the first antenna circuit is configured to receive the control message from the control substrate adjacent to the first antenna circuit or a first adjacent antenna circuit of a first adjacent node substrate
Implementation Method 2
the second antenna circuit is configured to transmit a reply message generated based on the control message to the control substrate adjacent to the second antenna circuit or a second adjacent antenna circuit of the first adjacent node substrate
Data Source
AI summary
A wireless communication system is disclosed. The wireless communication system includes a control substrate and several energy storage devices. Each of the several energy storage devices includes an energy storage element and a node substrate. The node substrate includes a first antenna circuit and a second antenna circuit. The first antenna circuit is configured to receive the control message from the control substrate adjacent to the first antenna circuit or a first adjacent antenna circuit of a first adjacent node substrate of a first adjacent one of the several energy storage devices. The second antenna circuit is configured to transmit a reply message generated based on the control message to the control substrate adjacent to the second antenna circuit or a second adjacent antenna circuit of the first adjacent node substrate of the first adjacent one of the several energy storage devices.