The difference and connection between cell, module and battery pack

Cell, module and battery pack have a structural relationship, battery is a general term, and cell, module and battery pack are different stages in battery application. In the battery pack, in order to safely and effectively manage hundreds of individual cells, cells are not randomly placed in the shell of the power battery, but in accordance with the orderly placement of modules and packages. The smallest unit is the cell, several cells can form a module, and several modules can form a package.

Let's look at the specific performance of each stage:

Battery cell: The battery cell is the smallest unit of the power battery, but also the energy storage unit, it must have a high energy density to store as much energy as possible, so that the electric vehicle has a farther driving range.

Module: A module is formed when multiple cells are encapsulated in the same housing frame and communicated with the outside through a unified boundary.

Battery pack: When several modules are jointly controlled or managed by BMS and thermal management system, the unified whole is called battery pack.