Insulating Member Sidewall Design for Terminal Expansion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing energy storage devices face challenges in protecting insulating members from heat during welding and maintaining reliable electrode terminal positioning, leading to potential deformation and whitening issues that affect the device's lifespan.
Innovation Solution
The energy storage device incorporates an insulating member with a through-hole for the shaft portion and a thin or notch portion on its sidewall, allowing for expansion accommodation and position regulation, enhancing the reliability of the joint between the terminal body and the case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the insulating member is formed so as to be in close contact with the electrode terminal for position regulation, then the position regulation function is improved, but deformation of the insulating member occurs due to terminal body deformation
Solution Approach 1:
The insulating member incorporates a thin portion at a specific location where it contacts the terminal body. This local thinning allows the insulating member to accommodate deformation of the terminal body without causing overall deformation or interference with other members, while still maintaining position regulation function through the remaining contact areas.
2Adaptability or versatility
If the insulating member is made thin to accommodate terminal deformation, then deformation accommodation is improved, but heat protection capability deteriorates
Solution Approach 1:
The insulating member features a thin portion only at the specific location where terminal body deformation occurs, while other portions maintain sufficient thickness to provide heat protection during welding. This localized thinning strategy allows the insulating member to simultaneously accommodate deformation and protect against heat.
3Ease of manufacture
If the insulating member structure is simplified for ease of manufacture, then manufacturing complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The insulating member incorporates a thin portion with specific dimensional parameters that allow it to accommodate terminal body deformation. This parameter modification enables the insulating member to maintain positioning accuracy despite terminal deformation, while the overall structure remains relatively simple and easy to manufacture using conventional molding techniques.
Data Source
AI summary
An energy storage device includes an electrode terminal including a plate-like terminal body and a shaft portion connected to the terminal body, and an upper insulating member disposed between the terminal body and the case, the upper insulating member having a through-hole through which the shaft portion penetrates. The upper insulating member has a sidewall portion disposed along an end surface of the terminal body. The sidewall portion is provided with a thin portion at a position on a side of a center point of the shaft portion in a direction orthogonal to an extending direction of the sidewall portion in a plan view.