Terminal Cover Structure for Wiring Corotation Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power storage devices face issues with nut and wiring corotation when connecting power output wiring to terminal bolts, particularly when the wiring is drawn out axially from terminal covers, leading to potential contact and interference problems.
Innovation Solution
A power storage device design featuring a terminal cover with a holding portion that guides and secures the wiring in a direction orthogonal to the terminal bolt's extension, using a base and cover portion configuration with a holding portion defined by first and second walls, and optionally a third wall forming a tubular shape with a slit, to prevent corotation and enhance insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wiring is drawn out axially from the terminal cover to allow easy connection, then the ease of operation is improved, but corotation of the nut and wiring occurs leading to reliability deterioration
Solution Approach 1:
The holding portion acts as an intermediary element between the wiring and the terminal cover. It provides a dedicated interface that guides the wiring in the axial direction while preventing corotation through the abutting walls, thus mediating between the need for easy connection and connection stability
Solution Approach 2:
The holding portion is extracted as a separate functional element from the terminal cover structure. It includes specific features (first wall, second wall, third wall) that are taken out to perform the specific function of preventing corotation while allowing axial wiring extension
2Object-affected harmful factors
If the terminal cover completely covers the terminal bolt for protection, then protection from contact is improved, but wiring guidance and corotation prevention become difficult
Solution Approach 1:
The terminal cover is designed with local quality variations: the base portion provides complete coverage for protection, while the holding portion with its opening and walls provides localized wiring guidance and corotation prevention. Different regions of the terminal cover have different functional qualities
3Device complexity
If a simple terminal cover structure is used, then device complexity is reduced, but corotation prevention capability is insufficient
Solution Approach 1:
The terminal cover is segmented into distinct functional portions: the base portion for coverage and the holding portion for wiring control. The holding portion is further segmented into multiple walls (first wall, second wall, third wall) that work together to prevent corotation while maintaining overall structural simplicity
Data Source
AI summary
A power storage device includes a terminal cover mounted in a terminal base. The terminal cover includes a base portion attached to the terminal base, cover the terminal base, and have an opening exposing a terminal bolt; and a cover portion attached to the base portion and covering at least the opening. The base portion has a first wall and a second wall protruding in a second direction from the base portion and facing each other with a wiring sandwiched therebetween.