Battery Terminal Sealing 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 the sealing plate is buried in the concave parts of the insulating member, 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 a conventional battery structure without concave parts is used, then the structure is simple and easy to manufacture, but the junction part of the electrode terminal-insulating member-sealing plate is vulnerable to damage from vibration-induced torque
Solution Approach 1:
The patent applies segmentation by dividing the sealing plate or insulating member into multiple regions through concave parts. These concave parts create distinct zones that allow the structure to segment the torque load path, distributing stress away from vulnerable junction areas. This segmentation enables the structure to handle vibration-induced torque more effectively while maintaining overall structural integrity.
Solution Approach 2:
The patent introduces a dimensional change by creating concave parts that add depth and three-dimensional complexity to an otherwise flat sealing plate or insulating member. This dimensional modification creates load-bearing pathways in the depth direction, allowing torque to be dispersed through volumetric distribution rather than surface-level stress concentration, thereby improving reliability without significantly complicating manufacturing.
2Strength
If the sealing plate or insulating member is designed with concave parts to disperse torque, then the torque load is effectively dispersed and junction parts are protected, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-forming the concave parts into the sealing plate or insulating member during the manufacturing process. This preliminary structuring ensures that the torque-dispersing geometry is already in place before assembly, allowing the components to be manufactured as standard parts with integrated load-dispersing features. This approach strengthens the structure while keeping manufacturing relatively straightforward by incorporating the design feature into the base manufacturing process.
Data Source
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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.