Battery Terminal Insulation Structure for Vibration Torque Dispersion
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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, leading to reliability issues.
Innovation Solution
Incorporating concave parts on either the sealing plate or insulating member, where the concave parts on the sealing plate are filled with the insulating member or vice versa, to disperse the torque load applied to the electrode terminal, thereby reducing damage to the junction parts.
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 from vehicle vibration
Solution Approach 1:
The patent introduces a cushioning layer between the electrode terminal and sealing plate that absorbs torque forces before they reach the junction part. This cushioning structure is pre-installed to mitigate the harmful effects of vehicle vibration torque, preventing damage to the electrode terminal connection while maintaining electrical stability.
2Reliability
If the insulating member is made thicker to improve insulation, then the insulation performance is enhanced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs composite material structures for the insulating member, combining multiple materials with complementary properties to achieve high insulation performance without excessive thickness. The composite structure allows the insulating member to maintain effective insulation while reducing overall complexity and improving manufacturability compared to a single thick-material approach.
Data Source
AI summary
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 an outer side surface of 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 sealing plate, and the concave part is filled with the insulating member opposed to the concave part.