What is a pouch-cell battery?

The pouch-cell battery (soft pack battery) is a liquid lithium-ion battery covered with a polymer shell. The biggest difference from other batteries is its packaging material, aluminum plastic film, which is also the most important and technically difficult material in pouch cells.

What is the structure of aluminum shell battery?

Structure of Aluminum Shell Battery Aluminum shell batteries are the main shell material of liquid lithium batteries, which is used in almost al areas involved. The pouch-cell battery (soft pack battery) is a liquid lithium-ion battery covered with a polymer shell.

What is steel Sheel battery?

The steel material for this battery is physically stable with its stress resistance higher than aluminum shell material. It is mostly used as the shell material of cylindrical lithium batteries. Structure of Steel Sheel Battery

Are pouch-cell batteries lighter than steel-shell batteries?

They are lightweight, and they do not explode easily. Pouch-cell batteries are 40% lighter than steel-shell lithium batteries of the same capacity and 20% lighter than aluminum-shell batteries. The capacity can be 10-15% higher than steel-shell batteries of the same size and 5-10% higher than aluminum-shell batteries of the same size.

Why is it dangerous to put a battery in a pouch?

This is dangerous because steel-shell and aluminum-shell batteries have a fixed space. When the gas inside these batteries expands beyond the limits of this space, the battery will explode. Pouch cells will also bulge up and crack, so they have a higher safety index.

Why are pouch-cell batteries better than hard-shell batteries?

Pouch cells will also bulge up and crack, so they have a higher safety index. Compared with steel and aluminum batteries (i.e. hard-shell batteries), pouch-cell batteries can have a flexible design, low internal resistance, more cycle time, and high energy density. They are lightweight, and they do not explode easily.