Cylindrical Battery Insulating Plate for Lead-Out Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cylindrical batteries face reduced insulating properties around the lead-out portion due to the presence of a through hole in the insulating plate, which compromises the insulation and increases the risk of short circuits.
Innovation Solution
The cylindrical battery design incorporates an insulating plate with a cut-and-raised part that surrounds the lead, enhancing insulation by covering the lead-out portion and allowing for increased flexibility and secure connection of the leads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a through hole is provided in the insulating plate to allow the lead to pass through, then the lead can be connected to the sealing assembly, but the insulating property around the through hole is reduced
Solution Approach 1:
The insulating plate is divided into a body section and a cut-and-raised part that can be separated. The lead passes through the gap between these sections, allowing the insulating plate to maintain its insulating function while accommodating the lead passage without compromising insulation properties.
Solution Approach 2:
The gap between the body section and the cut-and-raised part acts as an intermediary structure that allows the lead to pass through while maintaining insulation. This intermediate space provides both mechanical passage for the lead and electrical insulation, resolving the contradiction between connectivity and insulation.
2Reliability
If the insulating plate covers the lead-out portion completely, then insulating property is enhanced, but the lead cannot be led out for connection
Solution Approach 1:
By dividing the insulating plate into separable sections (body section and cut-and-raised part), the structure allows the lead to pass through the created gap while the majority of the insulating plate remains intact to provide comprehensive insulation coverage.
Solution Approach 2:
The cut-and-raised part is positioned at a different spatial level relative to the body section, creating a three-dimensional gap structure that accommodates the lead passage while maintaining two-dimensional insulation coverage across the insulating plate surface.
Data Source
AI summary
A cylindrical battery comprises: an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween; insulating plates facing the electrode body in the axial direction; leads electrically connected to the electrode body; and a bottomed cylindrical exterior can which accommodates the electrode body and the insulating plates. The insulating plates each have a body section, and a cut-and-raised section that is cut and raised from the body section. The leads respectively pass through the gaps produced by the formation of the cut-and-raised parts.