Battery group disconnected from busbar

Can a battery charge from a bus bar?

The bus bars should be the point of distribution, so the -ve wire to the existing battery should connect to the -ve bus bar. You probably want fuses on each of the batteries to protect the wire. @Finbarr - yes, one charges from PV, one from the alternator of the vehicle. Just incase we stay parked for a while, or the sun isn't shining.

What is a busbar used for?

In battery packs for electric mobility, a busbar is used to connect battery cells or modules. In automotive battery packs, busbars are used to connect battery modules together. Busbars are made of copper. In a schematic, a very small resistance represents the busbar. Busbars typically have very low impedance. Figure 1. Busbar example

Can a bus bar charge from a PV / alternator?

@Finbarr - yes, one charges from PV, one from the alternator of the vehicle. Just incase we stay parked for a while, or the sun isn't shining. @Kartman - Two +ve bus bars mainly because if they were on the one, the current rating would be around 640A and I wouldn't know where to source a bus bar that can handle such ratings (in Australia).

Does cell form factor affect busbar and interconnect design?

While the cell form factor used in a battery does not affect busbar and interconnect designs in any fundamental way, battery architectures and cell connection systems have had to adapt to cylindrical, prismatic and pouch cells, and the placement of terminals is important, he points out.

How will architecture affect busbars and interconnects?

Busbars and interconnects will also be affected by architectural developments such as the adoption of cell-to-pack (CTP) and cell-to-chassis (CTC) battery configurations. CTP and CTC batteries are often structural, and tend to require much larger current collectors, but the basic architecture is generally the same regardless of size.

Are busbar to cell connections physically different?

The busbar to cell connections are physically different for each cell format. However, all have the same requirements around low electrical resistance and good mechanical integrity. That mechanical integrity includes the joint with the cell. With all of these parts the following needs to be considered: