Battery connection system and composite busbar

How can a battery cell be welded to a bus bar?

Thanks to the thin conductive layer between 0,2 and 0,5 mm, battery cells can be easily welded to the bus bar connections using laser welding. The Infini-Cell™ bus bar design has two conductive layers: one for conducting power to the cells and the other layer used to monitor the status of battery cells.

What is a battery busbar?

Overall, busbar forms vary depending on the type of the battery cells used in the battery pack. The busbar for the cylindrical cell is typically comprised of large flat separate conductors or conductors laminated into one structure without additional components mounted on them.

Why are aluminum busbars a good choice for a battery cell connection?

Aluminum busbars are attractive for the battery cell connection because they provide reliable electrical performance while helping to save total battery pack weight since aluminum busbars are typically 50% lighter than copper busbars.

What is a busbar & how does it work?

The busbar connects individual cells in a series, and it contains many small lugs and wires for the BMS. The mechanical joining of pouch cells can be realized with or without a busbar. Some cell manufacturers are using complex busbars that combine lugs/small busbars and wiring for the BMS and housing.

Are busbars good thermal conductors?

These should be a physical clip that is designed for the life of the pack and considers all of the above points and all environmental inputs. Busbars are good electrical and hence good thermal conductors. This means they can conduct heat away or to other components.

Why is electrical insulation important for busbars?

With busbars, one of the most important considerations is electrical insulation, which is critical to the integrity of the whole electrical system, both in normal operations and in mitigating the effects of thermal runaway, for example, according to an engineer from a major chemicals company.