Battery Module Top Cover Antenna Through-Hole for Wireless Links
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Solution Overview
Problem
Conventional battery modules face challenges with wireless communication due to radio wave shielding by the case when the antenna is inside, and potential damage from interference when the antenna is outside.
Innovation Solution
A battery module design featuring a top cover with a through hole and an antenna part attached to the rear surface of the cover main body, positioned between the through hole and the unit cells, allowing the antenna to be exposed externally while being protected internally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna part is positioned inside the case, then the antenna is protected from damage, but radio wave transmission is shielded and wireless communication is disabled
Solution Approach 1:
The patent transitions the antenna from a fully internal position to a partially external position by creating a through-hole in the case. This dimensional change allows the antenna to extend through the case wall, enabling radio wave transmission while maintaining structural protection through the sealed opening.
Solution Approach 2:
The patent introduces a sealing component as an intermediary element that fills the through-hole around the antenna. This sealing mediator allows the antenna to pass through the case while maintaining the protective barrier function, preventing water or dust ingress while enabling electromagnetic wave transmission.
2Object-generated harmful factors
If the antenna part is positioned outside the case, then wireless communication is enabled, but the antenna may be damaged by interference
Solution Approach 1:
The patent implements a nested structure where the antenna is positioned within a through-hole opening in the case. The antenna is nested partially inside the case and partially outside, allowing it to maintain protection from the case structure while exposing the necessary portion for wireless communication.
Solution Approach 2:
The patent uses a flexible sealing component that can conform to the antenna and case interface. This flexible seal allows the antenna to extend through the case while maintaining a protective barrier, accommodating the antenna's presence without compromising the protective enclosure.
Data Source
AI summary
A battery module includes a plurality of unit cells arranged in a first direction and a top cover covering the plurality of unit cells in a second direction crossing the first direction. The top cover includes a cover main body having a through hole and an antenna part attached to a rear surface of the cover main body such that the antenna part covers the through hole between the cover main body and the plurality of unit cells.