Battery Terminal Sealing Assembly for Leak-Tight Electrical Isolation
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Solution Overview
Problem
The sealing performance and reliability of lithium-ion batteries are poor due to gaps generated between conductive members and their peripheral components during assembly, leading to risks of short circuiting and large-scale leakage.
Innovation Solution
A battery design that includes a housing with a cavity, a conductive member, a sealing assembly, and a connecting and limiting member, which ensures a full-sealing effect by forming a tight fit between the conductive member and its peripheral components, preventing short circuiting and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional assembly method with pulling rivets is used to connect terminals to housing, then assembly is simple and fast, but sealing performance and reliability are poor due to gaps between conductive member and peripheral components
Solution Approach 1:
The sealing assembly is divided into multiple components: a sealing ring that fits around the conductive member, and a sealing plate that covers the through hole. This segmentation allows each component to perform its specific sealing function independently, ensuring reliable sealing while maintaining assembly simplicity
Solution Approach 2:
The sealing ring is nested around the conductive member (second through hole), and the sealing plate is positioned over the housing through hole (first through hole). This nested arrangement creates multiple sealing interfaces that prevent electrolyte leakage without requiring complex assembly structures
2Reliability
If traditional assembly method is used, then assembly process is simple, but gaps are generated between conductive member and peripheral components causing short circuiting risk
Solution Approach 1:
The sealing ring acts as a flexible sealing element that can deform to accommodate slight variations in manufacturing tolerances. This flexible component ensures consistent electrical insulation and sealing performance even when fitting precision varies within acceptable ranges, reducing the risk of short circuits
3Reliability
If traditional assembly method with pulling rivets is used, then assembly is straightforward, but sealing and assembly reliability are poor
Solution Approach 1:
The sealing ring and sealing plate are pre-positioned in their respective locations before final assembly. The sealing ring is installed around the conductive member and the sealing plate is positioned on the housing, ensuring that sealing is established before the conductive member is fully inserted and connected
Solution Approach 2:
The sealing assembly (comprising the sealing ring and sealing plate) acts as an intermediary element between the housing and the conductive member. This intermediary component fills the gap that would otherwise exist in traditional assemblies, ensuring reliable sealing and electrical insulation without complicating the overall assembly process
Data Source
AI summary
The present application, related to the technical field of batteries, provides a battery and an electronic device, to solve problems of relatively poor sealing performance and reliability in battery assembly methods provided by the related art. The battery includes a housing, a conductive member, a sealing assembly and a connecting and limiting member, where at least part of the sealing assembly is located in a second through hole; a limiting end of the connecting and limiting member penetrates through the second through hole, and is fitted with the sealing assembly located in the second through hole; the sealing assembly located in the second through hole is fitted with the conductive member.