Structural Design and Process of Prismatic Aluminum-Shell Lithium Battery Cells

Structural Design and Process of Prismatic Aluminum-Shell Lithium Cells

Lithium Cell – Classification, Structure and Design

I. Classification of Lithium Cells

Lithium cells come in many types and have a very wide range of applications. So what types of lithium cells are there?

Introduction to Lithium Cell Types

Classification by shape:

Cylindrical Lithium Cells

• Cylindrical shape, mainly using steel shells and aluminum shells; steel shells are sealed by combining a crimping process with a cap, while aluminum shells are sealed by welding

• Wound bare lithium cell, with tabs exiting from both ends; the negative electrode is welded to the bottom of the shell, and the positive electrode is welded to the cap

Prismatic Hard-Shell Lithium Cells

• Prismatic small aluminum shell (CE)

• Plastic shell

• Steel-shell lithium cell

• Aluminum-shell lithium cell + threaded terminal post

• Aluminum-shell lithium cell, weldable conductive block

Pouch Lithium Cells

• Aluminum-laminated film packaging

• Tabs exiting from the same end or from both ends

• Bare lithium cell is mostly wound, but also exists in stacked form

• CE & EV

II. Classification of Lithium Cells by Material System

Lithium cobalt oxide, lithium manganese oxide, ternary, lithium iron phosphate

Below is a comparison of lithium cells with different material systems.

III. Prismatic Lithium Cell Structural Design