According to specific design requirements, the battery cells are assembled into battery modules in series and parallel. When the BMS and thermal management system jointly control or manage multiple battery modules, this unified whole is called a battery pack, which is mainly derived from its assembly and packaging process.
A battery pack is a power supply device that contains multiple battery modules. It can be considered as a larger battery system. The battery pack not only obtains higher voltage and capacity, but also facilitates the installation, connection and management of battery modules, and provides necessary protection and monitoring functions. The battery cells form a battery module, and the battery modules form a battery pack.
A battery module is a unit composed of multiple battery cells assembled in series and parallel. It is used to provide higher required voltage and capacity. At the same time, the module can support, fix and protect the battery cells.
For example, for a 48V lithium iron phosphate battery module, the nominal voltage of the lithium iron phosphate battery cell is 3.2V, 48/3.2=15, and 15 battery cells are required to be connected in series to achieve the required voltage.
The 48V battery module is widely used in various fields, such as golf carts, tourist strollers, two-wheeled electric vehicles, and forklifts.
