Views: 0 Author: Site Editor Publish Time: 2024-05-08 Origin: Site
Lithium batteries, as a popular energy storage product, are playing an increasingly significant role in various fields such as daily life, industry, and military. When we talk about lithium batteries, we often encounter terms such as battery cells, battery array, battery modules, and battery packs, which make it difficult to understand their unique meanings and functions. The editor will provide you with a preliminary understanding of these professional terms and open the door to the mysteries of lithium batteries.
Also known as battery cells or lithium battery cells, they are the most basic components of lithium batteries. It is generally composed of three main parts: positive and negative electrodes, electrolyte, and separator, and is the basic unit for storing and releasing energy in lithium batteries. If battery cells are classified based on the positive electrode material, they can be divided into various types, such as common ternary lithium cells, iron phosphate lithium cells, etc.
It is a battery system composed of a certain number of battery cells as needed through a designed series and parallel structure. By connecting multiple battery cells in series, the voltage of multiple cells is accumulated to achieve output voltage based on the corresponding multiple of cell voltage; And through parallel connection of battery cells, the capacity of multiple cells is accumulated to provide energy capacity based on the corresponding multiple of cell capacity. The design and structure of battery packs can be customized according to different spatial structures and application scenarios.
It is to add necessary circuits and control units to the battery pack to create modular components. The design and structure of battery modules can be customized according to needs, such as size, shape, capacity, and function. The function of battery modules is to improve the combination density and reliability of battery cells, while facilitating the assembly, connection, and management of battery packs. In the traditional battery pack manufacturing process, the lithium cells are first assembled into a battery module with a designed structure, and then the battery module is installed into the battery pack with the designed structure, forming a three-level assembly mode: lithium cells → battery module → battery pack.
A battery pack is a power supply device that contains multiple battery modules and can be considered as a larger battery system. It not only provides convenience for the installation, connection, and management of battery modules, but also provides necessary protection and monitoring functions. By equipping the BMS (Battery Management System), the battery pack can not only improve battery safety, but also actively perform thermal management to respond to changes in battery and environmental temperature, improving the efficient operation range of lithium batteries.
In conclusion, battery cells, battery array, battery modules, and battery packs, have different meanings in the topic of lithium batteries. From the most basic unit of battery cells to larger scale battery systems, they together constitute a complete lithium battery.
