A battery pack is a device that stores electrical energy to provide that energy to an electrical device or system when needed, such as an energy storage system or an electric vehicle. The energy is stored in cells connected within the battery pack to provide a sufficient amount of power battery packs need a minimum amount of voltage that a single cell cannot achieve. Therefore, many cells are connected in series to boost the voltage. Some designs utilize small-capacity cells. For this purpose, the cells are connected in parallel, boosting the capacity and providing energy equivalent to that of a single large cell. Battery packs consist of smaller sub-sections known as modules where the cells are connected.
Components of a Battery Pack
A battery pack is the most expensive component in an electric vehicle. It is a complex system that consists of many components. Some of the important components are as follows:
Cell
Cells are the main parts of a battery pack. The combination of materials involving the cell is known as its chemistry. Different battery chemistries can accomplish various performances and determinations. There are two normal sorts of cells: energy cells and power cells. Likewise, numerous variations give the ideal compromise contingent upon the application. In the EV business, the lithium-particle cell is the most well-known chemistry. Other chemistries are now and then utilized, like Nickel-Metal Hydride (NiMH), which offers a somewhat better lifecycle.
Electrical Connectors
Electrical connectors like wires, busbars, or other distribution conductors are utilized to form series or parallel connections between cells and groups of cells. These connections are usually formed with the help of welding or ultrasonic bonding. It is also possible to create busbar connections between modules mechanically with the help of fasteners.
Thermal Interface Materials
Thermal interface materials, including adhesives, pastes, and gap fillers, are put in between components to join them mechanically while enhancing thermal properties between the surfaces. With the increasing popularity of the battery pack, TIMs are becoming crucial components.
Battery Management System
The Battery Management System (BMS) safeguards cells by observing key boundaries like voltages, currents, and temperatures. It is liable for cell adjusting (to keep up with the ideal performance of the cells at the right voltage). It communicates with a few frameworks, for example, engine management and temperature control. It additionally incorporates protection gadgets that can close down the battery if necessary.
The Contactor System
This is a particular switch that Is controlled by the battery management system. It can cut off the electrical connection between the main battery and the high voltage bus, which gives voltage to the traction motor and other high-voltage components.
Housing
The housing or the casing is a tough component that protects the battery from environmental conditions such as water, dust, salt, etc. Besides providing protection, it also helps maintain an accurate and precise temperature and electrical insulation in the battery and protects from damages like slow shorts and rust.
The Communication System
The communication system ensures communication with other components in the electric vehicle or other electric or electrical systems. The majorly used protocol here is the CAN bus.
Conclusion
Battery packs are an essential device used in many electric and electrical systems. We have a wide range of battery packs. Visit our shopping website to choose a battery pack for your application.
