Battery Terminal Insulation Structure for Vibration Torque Relief
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Solution Overview
Problem
Vibration-induced torque can damage the junction parts of electrode terminals, insulating members, and sealing plates in batteries, particularly during fastening or operation of vehicles, leading to reliability issues.
Innovation Solution
Incorporating concave parts on either the electrode terminal or the insulating member, where the concave parts on the terminal are filled with the insulating member or the terminal is buried in the insulating member's concave parts, to disperse the torque load and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrode terminal is rigidly fixed to the sealing plate, then the electrical connection is stable, but the junction part is vulnerable to torque-induced damage during vehicle vibration
Solution Approach 1:
The insulating member is positioned in advance at the junction between the electrode terminal and sealing plate to cushion and absorb torque loads before they can damage the electrical connection. This preventive measure ensures that vibration-induced torques are mitigated before reaching critical components.
Solution Approach 2:
The insulating member serves as an intermediary element between the electrode terminal and sealing plate. It mediates the torque transmission by providing a compliant interface that reduces stress concentration while maintaining electrical isolation and mechanical support.
2Object-affected harmful factors
If the insulating member is placed at the junction of electrode terminal and sealing plate, then torque load is dispersed and damage is suppressed, but the device structure becomes more complex
Solution Approach 1:
The insulating member performs multiple functions simultaneously: it provides electrical insulation between the terminal and sealing plate, mechanically disperses torque loads, and prevents direct contact that could lead to short circuits or stress concentration. This multi-functionality reduces the need for additional dedicated components.
Solution Approach 2:
The insulating member is integrated into the junction structure, combining insulation and mechanical load-bearing functions in a single element. This merging of functions simplifies the overall assembly by eliminating the need for separate insulation components and load-distribution elements.
Data Source
AI summary
A battery preferably improved in reliability is provided. In accordance with a preferable one aspect of a battery herein disclosed, the battery comprising: an electrode body including respective electrodes of positive and negative electrodes; a battery case including an opening, and for accommodating the electrode body; a sealing plate including a terminal mounting hole, and for sealing the opening; a collector terminal electrically joined at one end thereof with any electrode of the positive and negative electrodes inside the battery case, and inserted at another end thereof through the terminal mounting hole to be exposed to outside the sealing plate; and an insulating member for establishing an insulation between at least a part of the sealing plate and the collector terminal. A plurality of concave parts are existed at the collector terminal, and the concave part is filled with the insulating member opposed to the concave part.