The conductivity of battery aluminum foil is the primary consideration in material selection, and the conductivity is higher than other aluminum alloy series. In new energy vehicle batteries, if the commonly used 12μm aluminum foil is replaced by 10μm or 8μm aluminum foil, the aluminum foil required per unit energy can be reduced to 0.38kg/kwh (10μm aluminum foil) and 0.30kg/kwh (8μm aluminum foil), thus making the battery The energy density of the system is increased by 1.2% and 2.4% respectively.

There is a close relationship between the thickness and properties of aluminum foil.

The thickness of the aluminum foil will affect the capacity of the battery. Within a certain range, as the thickness of the aluminum foil increases, the battery capacity also increases. However, when the thickness of the aluminum foil reaches a certain level, the increase in battery capacity will gradually level off, because excessive thickness of the aluminum foil will affect the diffusion rate of lithium ions, thereby affecting the battery capacity.

Characteristic:

• High purity: This aluminum foil is usually of high purity to ensure its good conductive properties.

• Thin and light: It is generally thin and lightweight, which helps increase the energy density of the battery.

• Good corrosion resistance: It has good corrosion resistance and can resist the erosion of chemical substances inside the battery.

• Good thermal conductivity: This aluminum foil has good thermal conductivity and helps improve the heat dissipation performance of the battery.