The rapid development of electric vehicles, power lithium battery it has become the most important part of it. In electric vehicles, power lithium battery module and Pack are two commonly used concepts. This article will introduce the definition, functions and differences between the power lithium battery module and Pack.

I. Definition and function of power lithium battery module

1. definition: The power lithium battery module is a battery module composed of multiple battery cells, which is usually formed in series and parallel.
2. Function: The main function of the power lithium battery module is to store and release electric energy to provide power for electric vehicles. The battery cells in the module form a high voltage and high capacity battery pack through series and parallel connection to meet the demand of electric vehicles for high energy density and high power output.

II. Definition and function of power lithium battery Pack

1. definition: power lithium battery Pack is a battery assembly composed of multiple power lithium battery modules, usually including battery management system (BMS) and other accessories.
2. Function: The main function of the power lithium battery Pack is to manage and protect the battery module to ensure the safe, reliable and efficient operation of the battery Pack. The BMS in Pack is responsible for monitoring battery voltage, temperature, current and other parameters, as well as realizing battery equalization, charge and discharge control, fault detection and other functions.

3. The difference between power lithium battery module and Pack

1. composition: The power lithium battery module is a component composed of multiple battery cells, while the power lithium battery Pack is a component composed of multiple power lithium battery modules.
2. Function: The power lithium battery module is mainly used to store and release electric energy and provide power; While the power lithium battery Pack is responsible for managing and protecting the battery module.
3. Features: The power lithium battery module usually has high energy density and power output capability to meet the power demand of electric vehicles; While the power lithium battery Pack has higher safety and reliability requirements, including fault detection, temperature control, charge and discharge control and other functions.
4. Application: The power lithium battery module is usually used as the core power source of electric vehicles; While the power lithium battery Pack is used as the battery management system of electric vehicles to ensure the safety and performance of the battery Pack.

As important components of electric vehicles, power lithium battery module and Pack play a key role in storing and releasing electric energy, providing power, managing and protecting battery Pack. They have certain differences in composition, function, characteristics and application, but they all have important influence on the performance and reliability of electric vehicles. With the continuous progress of technology and the expansion of application, the power lithium battery module and Pack will continue to develop, making greater contributions to the promotion and popularization of electric vehicles.