Sealed Battery Terminal Flange Structure for Load-Stable Joining Force

A buffer portion is introduced as an intermediary element between the external terminal and the internal terminal. This buffer portion absorbs and isolates the stress transmitted from external devices, preventing direct propagation to the internal terminal joining portion. The buffer acts as a mechanical mediator that decouples the stress pathways, thereby maintaining the joining force integrity at the internal terminal connection.

The external terminal structure is segmented into distinct functional portions: a joining portion that connects to the internal terminal, a buffer portion that absorbs stress, and an external device joining portion that interfaces with external devices. This segmentation allows each portion to perform its specific function independently, with the buffer portion specifically designed to mitigate stress transmission to the critical internal terminal joining area.

The buffer portion serves as a mechanical intermediary that prevents load-induced deformation from reaching the internal terminal joining portion. By absorbing and distributing the applied loads, the buffer maintains the contact surface area between the internal and external terminals, preventing the increase in electrical resistance that would otherwise result from reduced contact area.

The buffer portion is pre-configured to provide cushioning and stress distribution before loads are applied during operation. This beforehand cushioning capability ensures that when external devices are connected and loads are applied, the internal terminal joining portion is already protected from stress concentration, thereby maintaining optimal contact surface area and low electrical resistance throughout operation.