Metasurface Adaptive Multipath Control for EV Battery Wireless Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As the density of cells and modules increases within a vehicle battery pack, the reduced space for radio propagation leads to an electromagnetic reverberant environment with standing waves, resulting in areas of higher and lower signal strength, which affects communication between module measurement systems and wireless network controllers.
Innovation Solution
Modifying the transmission and reflection properties of a metasurface proximate to the antenna of the module measurement system, such as varying the transmission magnitude, transmission phase, reflection magnitude, and reflection phase, to change the radio propagation path and prevent antennas from being positioned in nulls within the electromagnetic field pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the density of cells and modules is increased within the battery pack, then the productivity and energy density are improved, but the space for radio propagation is reduced causing electromagnetic reverberation and signal strength variations
Solution Approach 1:
A metasurface is introduced as an intermediary component between the antenna and the battery pack interior. This metasurface actively manipulates the electromagnetic wave propagation by adjusting its transmission and reflection properties, serving as a mediator that resolves the conflict between high density packaging and reliable wireless communication.
Solution Approach 2:
The metasurface is configured to dynamically adjust its electromagnetic properties in response to detected signal conditions. By modifying transmission magnitude, transmission phase, reflection magnitude, and reflection phase based on real-time feedback, the system adapts to changing electromagnetic environments caused by varying battery pack configurations.
2Reliability
If the metasurface properties are modified to control electromagnetic multipath, then the communication reliability is improved, but the device complexity increases
Solution Approach 1:
The system employs feedback mechanisms where the module measurement system detects electromagnetic field conditions and uses this information to adjust the metasurface properties. This closed-loop control enables the system to automatically optimize communication reliability without requiring complex manual configuration or intervention.
Solution Approach 2:
The metasurface is designed to perform multiple functions simultaneously: it controls electromagnetic wave propagation, adjusts transmission and reflection properties, and adapts to different operating conditions. This multi-functionality reduces the need for separate components and simplifies the overall system architecture despite the advanced functionality required.
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
This adaptive multipath control ensures consistent signal strength and communication between module measurement systems and wireless network controllers, improving the performance of wireless battery monitoring systems by preventing antennas from being in local EM minima.
Implementation Method 1
modifying at least one of: one or more transmission properties and one or more reflection properties of a metasurface
Implementation Method 2
modifying at least one of: one or more transmission properties and one or more reflection properties of a metasurface
Implementation Method 3
transmitting, via the antenna of the module measurement system, battery sensor data
Data Source
AI summary
Embodiments for adaptive multipath control within an electric vehicle battery pack are disclosed. In a particular embodiment, a method for adaptive multipath control includes modifying at least one of: one or more transmission properties and one or more reflection properties of a metasurface of a module measurement system of a battery management system. In this embodiment, the metasurface is proximate to an antenna of the module measurement system. The method also includes transmitting, via the antenna of the module measurement system, battery sensor data.