Counter-flow Cold Plate for Uniform Battery Cooling

The cold plate is divided into multiple flow paths (first flow path and second flow path) that are spatially segmented and distributed across the battery pack. Each flow path contains multiple flow channels arranged in a serpentine pattern, ensuring heat is extracted from different locations simultaneously. This segmentation resolves the contradiction by maintaining temperature uniformity through distributed cooling while keeping each individual flow path relatively simple in structure.

Different regions of the battery pack are provided with dedicated flow paths and flow channels tailored to local heat generation characteristics. The serpentine arrangement of flow channels within each path ensures that coolant flows through all regions, providing locally optimized cooling. This local quality approach maintains temperature uniformity across the entire battery pack while allowing each local region to have a straightforward cooling structure.

The cooling system is segmented into multiple independent flow paths, each with its own serpentine flow channels. This segmentation allows the coolant to be distributed across multiple parallel cooling circuits, ensuring that heat is removed uniformly from different battery regions simultaneously. The segmentation prevents any single flow path from becoming the bottleneck that would cause non-uniform heat dissipation while maintaining effective cooling through the combined capacity of all paths.

Instead of having a single continuous flow path that progresses linearly through the cold plate (which causes temperature gradients along the flow direction), the invention uses multiple serpentine paths where the coolant flows in opposite directions in adjacent channels. This inverted approach to flow arrangement ensures that the inlet and outlet temperatures are distributed more evenly across the battery pack, achieving uniform heat dissipation while maintaining high cooling effectiveness.