Friction stir welding

Example

Use in Lemonergy

Place operations and quality checks in process order.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Connected concepts

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

Cooling plate

A flat aluminium channel assembly under or between the cells through which coolant, usually a water–glycol mix, is pumped. Heat crosses from cell to plate through a thermal interface material; the plate also sets the pack’s temperature uniformity.

Enclosure

The sealed case that carries the modules, protects them in a crash, keeps water out to an IP67 rating or better and vents gas in a thermal event. In many cars it is a structural part of the body.

Laser welding

Joining metal with a focused laser beam, used to seal cans, attach caps and connect busbars to cell terminals. It is fast and precise but sensitive to gaps and reflectivity, so copper joints need special wavelengths or beam shaping.

Resistance welding

Joining metals by clamping them between electrodes and passing a short, high current pulse, so contact resistance melts a small nugget. It joins the negative tab to the can base inside cylindrical cells and nickel strips to cell terminals in tool and e-bike packs; for copper and aluminium busbars laser welding has largely taken over, as they conduct too well to heat.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

1. Current and future lithium-ion battery manufacturing

   Yangtao Liu, Ruihan Zhang, Jun Wang, Yan Wang · iScience · 2021

   Topic background · Electrode preparation, cell assembly, formation and manufacturing trade-offs.