Battery Management Antenna Layout With Recessed Waveguide Shielding
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Solution Overview
Problem
In battery management systems, normal wireless communication can be hindered due to the narrow space in which electromagnetic waves propagate and interference from external radio waves.
Innovation Solution
A battery management system that includes a management circuit with a first communication antenna and one or more monitoring circuits with second communication antennas, where the communication antennas are aligned in a straight line and covered by a conductor with a recess acting as a waveguide to stabilize and maintain radio waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication is implemented in a battery management system, then information transmission between management circuit and monitoring circuits is enabled, but communication quality degrades due to narrow propagation space and external radio wave interference
Solution Approach 1:
A conductor with a recess is introduced as an intermediary structure between the communication antennas and the external environment. The recess acts as a waveguide that mediates the propagation of radio waves, allowing communication signals to pass through while blocking external interference, thus resolving the contradiction between enabling wireless communication and preventing radio wave interference
Solution Approach 2:
The conductor is designed with a specific local structure (recess) at the location where radio wave propagation is needed. This local modification creates a waveguide structure that has different electromagnetic properties compared to the surrounding areas, enabling selective passage of communication signals while blocking external interference in other directions
2Volume of moving object
If communication antennas are aligned in a straight line to save space, then device compactness is improved, but wireless communication is hindered by narrow propagation space
Solution Approach 1:
The recess in the conductor extends in the alignment direction of the communication antennas, creating a three-dimensional waveguide structure. This dimensional approach allows radio waves to propagate effectively along the aligned antenna configuration without requiring additional lateral space, thus resolving the contradiction between compact space utilization and reliable wireless communication
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 configuration inhibits the degradation of wireless communication quality by preventing interference and ensuring stable propagation of radio waves within the system.
Implementation Method 1
The conductor includes a recess that extends in an alignment direction of the communication antenna group and is recessed in a direction away from the communication antenna group in a cross-section orthogonal to the alignment direction
Data Source
AI summary
A BMS for managing a battery assembly includes: a BMU that manages the battery assembly and includes a communication antenna; and one or more CMUs that monitor the battery assembly and each include a communication antenna that communicates with the communication antenna. A communication antenna group including the communication antenna and one or more communication antennas is arranged in a straight line. The BMS further includes a conductor that covers at least part of the communication antenna group. The conductor includes a recess that extends in the alignment direction of the communication antenna group and is recessed in a direction away from the communication antenna group in a cross-section orthogonal to the alignment direction.