Non-Aqueous Battery Electrode Resin Layout for High-Rate Heat Control

The patent applies local quality by forming resin portions specifically at the end portions of the electrode body where temperature rise is most severe during high rate charge and discharge. These resin portions are not uniformly distributed but localized to the critical heat-generating areas, providing targeted thermal management where it is most needed while maintaining power output performance.

The patent uses composite materials by combining resin portions with the electrode body structure. The resin portions are formed of swellable resin that absorbs electrolyte, creating a composite structure that integrates thermal management functionality directly into the electrode body without requiring separate cooling systems.

The patent addresses this contradiction by applying local quality differently - instead of uniformly increasing electrolyte holding throughout, it locally concentrates electrolyte absorption capacity at the end portions through resin portions. This localized approach specifically targets the problem area (end portions) where electrolyte outflow occurs, while the center portion maintains its original electrolyte distribution.

The resin portions act as intermediaries that absorb and retain electrolyte at the end portions. These resin portions serve as a buffer between the electrolyte and the external environment, preventing direct outflow while maintaining the electrolyte supply to active materials during high rate operations.

The patent applies preliminary action by pre-forming resin portions at the end portions of the electrode body before high rate charge and discharge operations begin. These resin portions are pre-positioned to absorb electrolyte in advance, creating a reservoir that prevents electrolyte outflow during subsequent rapid charge and discharge cycles, thereby maintaining low internal resistance.

The resin portions provide beforehand cushioning by absorbing excess electrolyte and creating a buffer zone at the end portions. This cushioning effect prevents the harmful outflow of electrolyte during high rate operations, protecting the battery's internal resistance from increasing while allowing high productivity operations to proceed.