Battery Cell Tab Layout With Heat Exchange Plates for Thermal Uniformity

The battery structure is segmented by dividing the electrode plate layers into multiple groups with tabs at different positions. Heat exchange plates are selectively arranged on both sides of the shell to correspond with specific tab groups, creating localized heat management zones. This segmentation allows targeted heat absorption where needed while maintaining overall thermal balance, reducing temperature differences without requiring uniform heat exchange throughout the entire battery structure.

Different regions of the battery are given different thermal management properties. The heat exchange plates are positioned to provide enhanced cooling specifically at locations where tab groups generate heat, while other regions maintain their original thermal characteristics. This local quality approach optimizes heat dissipation efficiency by concentrating thermal management resources where they are most needed, rather than uniformly distributing them throughout the battery.

Middle tabs are selectively removed from the electrode plate layers to eliminate sources of temperature and impedance variation. By extracting these problematic tabs from the system, the patent achieves more uniform current distribution and reduced thermal gradients across the electrode assembly. The remaining tabs are strategically positioned to maintain adequate current carrying capability while benefiting from improved current consistency.

The patent changes the parameter of tab distribution by removing middle tabs and retaining only those at specific positions. This parameter change transforms the tab configuration from a uniform or dense distribution to a selective distribution pattern, where tabs are placed only where they contribute positively to current consistency without creating thermal or impedance issues. This optimization balances current consistency and current carrying capability.