A battery module is a battery component composed of multiple individual batteries, and is an important component of electric vehicles. Its function is to connect multiple battery cells together, forming a whole to provide sufficient electrical energy for the operation of electric vehicles. Battery modules are not only the power source of electric vehicles, but also one of their important energy storage devices.

The basic components of a battery module include battery cells, battery management system, battery box, battery connectors, etc. Among them, the battery monomer is the core component of the battery module, usually using lithium-ion batteries, which are characterized by high energy density, low self discharge rate, and long service life. The battery management system exists to ensure the safety, reliability, and long service life of batteries. Its main functions include battery status monitoring, battery temperature control, and battery overcharging/discharging protection.