Battery Module Elastic Sealing for Contaminant Prevention
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Solution Overview
Problem
High-capacity rechargeable batteries used in large power applications face safety issues due to incomplete sealing of their housings, which can lead to external short circuits and potential explosions or fires from foreign matter entering the housing.
Innovation Solution
A battery module design featuring a housing with a first fastening portion and a cover with a second fastening portion, both configured for a tight fit, and an elastic member inserted between them to ensure a stable seal, using materials like natural rubber or polybutylene terephthalate, to prevent moisture and foreign matter from entering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detachable cover is used for maintenance access, then ease of operation is improved, but sealing reliability deteriorates
Solution Approach 1:
An elastic sealing member is introduced as an intermediary element between the cover and housing. This sealing member deforms elastically to fill gaps and ensure complete sealing while allowing the cover to remain detachable for maintenance purposes.
Solution Approach 2:
The sealing member utilizes elastic deformation (change in physical state) to adapt to the mating surfaces of the cover and housing. The elastic property allows the sealing member to deform during assembly and maintain constant sealing pressure, ensuring reliable sealing despite the detachable design.
2Reliability
If foreign matter enters the housing, then safety deteriorates, but complete sealing is impossible with detachable cover
Solution Approach 1:
The elastic sealing member acts as a barrier intermediary between the external environment and the battery housing interior. It prevents water, dust, and other foreign matter from entering while accommodating the detachable cover design necessary for maintenance.
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 design provides a secure sealing mechanism that enhances the safety of the battery module by preventing external contaminants from entering, thereby reducing the risk of short circuits and explosions.
Implementation Method 1
an elastic member configured to fit between the first and second fastening portions
Data Source
AI summary
A battery module according to one aspect of the present invention includes: a plurality of rechargeable batteries; a housing configured to house the plurality of rechargeable batteries and having a first fastening portion; a cover configured to couple to the housing and having a second fastening portion configured to couple to the first fastening portion by a tight fitting; and an elastic member configured to fit between the first and second fastening portions.