Negative Electrode Communication Grooves for Battery Wetting

The invention divides the electrode winding assembly into multiple segments by introducing partition walls that create separate chambers. This segmentation allows independent electrolyte impregnation and coating formation in each chamber, ensuring uniform coating distribution across the entire large-sized electrode structure by preventing electrolyte stagnation at end portions.

The invention applies local quality by creating different structural conditions in different regions of the electrode winding assembly. Partition walls are strategically placed to ensure that central portions and end portions receive appropriate electrolyte distribution, with each region having optimized local conditions for uniform coating formation through controlled electrolyte flow paths.

The electrode winding assembly is divided into multiple chambers by partition walls, creating separate impregnation zones. This segmentation allows electrolyte to be introduced and distributed more effectively throughout each chamber, preventing gas entrapment in central portions and ensuring complete wetting by establishing controlled flow paths that reach all regions uniformly.

Partition walls serve as intermediary structures that facilitate electrolyte distribution. These walls create intermediate chambers that act as transition zones, allowing electrolyte to progressively fill and wet the electrode material from multiple directions, ensuring complete gas replacement and uniform impregnation throughout the entire assembly.

The invention segments the electrode winding assembly into multiple chambers using partition walls. This segmentation prevents the bulk movement of electrolyte from central to end portions during high-rate charging and discharging, as each chamber maintains its own electrolyte reservoir. The partition walls act as barriers that localize electrolyte distribution, ensuring uniform availability throughout the assembly even under high power conditions.

The partition wall structure provides beforehand cushioning by pre-establishing separate electrolyte compartments. This structural preparation ensures that during rapid charging and discharging cycles, each chamber maintains adequate electrolyte levels independently, preventing the dominant outward push of electrolyte that would otherwise cause depletion in central portions and overaccumulation at end portions.