Lithium battery packs, as modular energy storage systems composed of multiple lithium battery cells, find wide applications in mobile devices, electric vehicles, and energy storage systems. Their fundamental composition includes lithium-ion cathodes, lithium-ion anodes, electrolytes, and separators. However, the key technological challenges in the design of lithium battery packs directly impact their performance and application scope.

Firstly, thermal management stands as a critical technological challenge in the design of lithium battery packs. Efficient thermal management systems must be implemented to prevent overheating during the charge and discharge processes, safeguarding the battery’s performance and lifespan.

Secondly, balancing technology is crucial to ensuring the overall performance of lithium battery packs. Due to voltage and capacity differences among individual cells, balancing technology must be implemented through the Battery Management System (BMS) to evenly distribute charges during the charge and discharge processes, enhancing the overall performance and lifespan of the battery pack.

The enhancement of charging speed and power density is aimed at meeting the demands of electric vehicles and energy storage systems for high power and energy density. However, this also brings new challenges, requiring the maintenance of battery safety and stability during fast charging.

Safety and reliability have always been the focal points of lithium battery technology development. Especially in high-power and high-energy density scenarios, measures must be taken to prevent issues such as overcharging, over-discharging, and short circuits, ensuring the safe operation of lithium battery packs.

Cycle life and degradation issues directly impact the lifespan of the battery pack. Scientists are dedicated to researching methods to slow down the degradation of battery performance and extend the cycle life of lithium battery packs.

Finally, the integration and module design of lithium battery packs directly affects their applicability and flexibility. By carefully designing the module structure to ensure efficient collaboration of components, lithium battery packs can better adapt to the diverse requirements of different application scenarios.

Driven by these technological challenges, lithium battery packs continuously undergo technological innovations, laying a solid foundation for safer, more efficient, and more reliable energy storage systems.