Temporal variations can significantly impact li-ion batteries working and cycle life expectancy under severe operating and climatic conditions. Concerning this, indirect liquid cooling is known to be the most commonly used technique. However, a need for heat transfer augmentation still exists to minimize the module's crowning temperature and temperature gradient. Hence, the current study suggests and designs a novel liquid cooling plate comprising a spiral channel configuration to reduce the thermal non-linearity across the battery module. For this COMSOL Multiphysics software is utilised where an electrothermal model is combined with the conjugate heat transfer model. The thermal variations of pouch battery module in conjunction with the suggested cold plate design are assessed for a varying mass flow rate and a discharge rate fixed at 3C. Outcomes of the present analysis indicate that altering the mass flow rate in a range of 0.001 to 0.005 kg s^-1 reduces the average temperature by 3.81 °C. Alongside, the heat transfer coefficient is enhanced by 1.56%.