Battery Sealing Ring Structure for Simpler Lead Wire Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electricity storage devices, such as batteries, have complex configurations and a large number of components, leading to increased production costs and complexity in connecting external lead wires.
Innovation Solution
The proposed electricity storage device features a simplified configuration with a conductive first ring, second ring, terminal plate, and insulation ring, which are joined to form a sealing material that can be easily connected to a can with a bottomed tubular shape, allowing for efficient sealing and external lead wire connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional battery cap with multiple components is used, then sealing reliability is improved, but device complexity and production cost increase
Solution Approach 1:
The patent combines multiple sealing components (outer conductive ring, conductive top plate, conductive rupture plate, and insulators) into an integrated sealing material structure. The sealing material includes a first conductive layer, second conductive layer, terminal plate, and insulation ring that work together as a unified component, eliminating the need for separate battery cap parts while maintaining sealing functionality.
Solution Approach 2:
The sealing material serves multiple functions simultaneously: it provides sealing against the can opening, establishes electrical connections through conductive layers, provides electrical insulation through the insulation ring, and enables external lead wire connection through the terminal plate. This multi-functional design replaces several specialized components with a single integrated structure.
2Reliability
If a conventional battery cap with complicated shape is used, then sealing performance is improved, but manufacturing cost increases
Solution Approach 1:
The sealing material is divided into distinct functional layers: a first conductive layer (31) that contacts the can, a second conductive layer (32) for electrical connection, an insulation ring (34) for electrical isolation, and a terminal plate (33) for external connections. This segmentation allows each layer to be optimized for its specific function while simplifying the overall manufacturing process compared to forming a single complex shape.
Solution Approach 2:
The sealing material utilizes composite construction with different conductive layers and insulating materials. The first and second conductive layers can be made from different materials optimized for their respective functions, while the insulation ring provides electrical isolation. This composite approach allows selection of cost-effective materials for each function rather than requiring a single complex material.
3Ease of manufacture
If a simplified sealing material configuration is used, then production cost is reduced, but ease of connecting external lead wire may be compromised
Solution Approach 1:
The terminal plate extends from the sealing material structure, providing an accessible external connection point that protrudes from the main body. This dimensional extension allows lead wire connection without complicating the internal sealing structure, as the connection function is added in a different spatial dimension rather than within the sealed volume.
Data Source
AI summary
An electricity storage device to be disclosed includes: an electrode assembly including a first electrode and a second electrode; a can accommodating the electrode assembly and including a bottomed tubular shape with an opening provided at one end; and a sealing material joined to the one end of the can to seal the opening. The sealing material includes a first ring that is conductive, a second ring that is conductive and joined to the first ring, a terminal plate that is conductive provided between the first ring and the second ring, and an insulation ring insulating the first ring and the second ring from the terminal plate. An outer peripheral edge of the terminal plate is held between the first ring and the second ring with the insulation ring being put therebetween.