Image: A cylindrical 18650 lithium-ion cell without the casing on, showing the "jelly roll" inside.
Cylindrical lithium-ion cell
A cylindrical lithium-ion cell is a cylindrical cell made from a single long "sandwich" of the positive electrode, separator, negative electrode, and insulating sheet which is then rolled and inserted into a hollow cylinder casing. This cell design is often called a "jelly roll" or "swiss roll" because the cross section looks like a swiss roll.
Properties
| Type of | Lithium-ion cell |
|---|---|
| Has types | 18650 cell, 2170 cell |
| Used in | Tesla 18650 battery module (5kWh) |
| Related images | 18650 cell, 18650 cell disassembled, 18650 cell protection circuit, 18650 cells of different lengths |