Energy storage battery packs generate a significant amount of heat during operation, affecting battery performance and lifespan, and potentially leading to safety risks. Consequently, the design of efficient battery cooling plates is essential for maintaining the performance of energy-storage battery packs. This study performs a comparative investigation of the cooling efficacy of ECP versus MCP. We created and enhanced three model sets for the two types of cooling plates. The findings indicate that lowering the coolant inlet temperature reduces the peak temperature of the batteries in both cooling plate types, while simultaneously increasing the maximum temperature differential. Augmenting the coolant flow rate concurrently diminishes both the peak battery temperature and the maximum temperature differential. From the three models of ECP, it was found that optimization measures such as reducing channel spacing and increasing the coolant flow distance can improve cooling efficiency. After optimization, the maximum temperature of the A-group model decreased by 1.57°C compared to the initial model. The optimization of the MCP ensured uniform distribution over the battery module while preserving fluid dynamics inside the microchannel configuration. Following optimization, the E-group model demonstrated a temperature decrease of 1.35°C relative to the baseline model, attaining a cooling effect comparable to that of the solid cooling plate. By comparing and analyzing the hc and Nu of the cooling plate at a min of 3L/min, it was verified that the optimized MCP heat dissipation performance is consistent with ECP.