Skip to the main content
Polestar 2

What’s in an EV battery?

Fortune favours the fold. Folding led to origami, one of the world’s most unique and celebrated art forms. It also sees use in EV batteries, folding modules to maximise storage while taking up minimum space. Because naturally, EV batteries contain more than the battery modules themselves.

Close up of components inside a Polestar electric battery.

Given that batteries take centre stage in the electric mobility revolution, it’s natural to wonder what they’re made of. A battery pack contains two main components: battery cells, and a Cell-Module Controller (CMC) which controls all information and functions of the battery like voltage, current, and temperature by controlling the CMC and other parts.

The cells themselves are made up of cathodes, anodes, separators, and electrolytes. The folding begins by stacking the cathode, anode, and a separator together. In a mixing process, the raw materials are combined and used to coat copper and aluminium foil to ensure proper electric flow within the cell.

Cells are packaged differently. Prismatically, in a pouch, or as a cylinder. Each type has some strong and weak points when it comes to productivity, cost, and safety.

Folding opens up new avenues, both in the arts and in battery technology. Proving conclusively that a fold move is the right move.

Related

Polestar 3 down under: the ultimate Tasmanian test drive

In a country known for its vast and varied landscapes, driving across Australia offers a front-row seat to dramatic scenery shifts, all with their own unique driving conditions. From long, flat stretches to tight, twisting loops, Australia demands a vehicle that’s as adaptable as it is capable. Enter: Polestar 3. Having already impressed journalists at an international test drive event in Spain, our first electric SUV now faced a new challenge: tackling Australia’s own unique landscape. On Tasmania's winding East Coast, Australian journalists were invited to explore this Swedish-engineered SUV’s performance and handling characteristics on the demanding roads of our island state.