Laminated busbar having a shield layer for battery systems

A battery system comprising:

• a first plurality of battery cells arranged in a first battery module, wherein the first plurality of battery cells each comprise a respective venting end;
• a second plurality of battery cells arranged in a second battery module, wherein the first battery module and the second battery module are arranged next to each other, and wherein the first battery module and the second battery module are electrically coupled in series;
• a laminated busbar assembly arranged configured to be electrically coupled to the first plurality of battery cells and to the second plurality of battery cells, wherein the laminated busbar assembly is arranged over a first portion of the first battery module facing the respective venting ends, and wherein the laminated busbar assembly comprises:
• a first busbar configured to be electrically coupled to the first plurality of battery cells and to the second plurality of battery cells,
• a second busbar configured to be electrically coupled to the first plurality of battery cells and to the second plurality of battery cells,
• a first insulative layer arranged between the first busbar and the second busbar
• a second insulative layer arranged adjacent to the second busbar, and
• a steel layer arranged adjacent to second layer and arranged between the second busbar and the plurality of battery cells, wherein the steel layer is configured to shield the first busbar and the second busbar from a thermal event associated with one or more battery cells of the first plurality of battery cells.

A battery system comprising:

• a plurality battery modules each comprising a respective plurality of battery cells, wherein the battery modules are electrically coupled by a plurality of busbars, and wherein the first plurality of battery cells each comprise a respective venting end;
• a laminated busbar assembly comprising at least one busbar of the plurality of busbars, wherein the laminated busbar assembly is configured to be electrically coupled to the first plurality of battery cells and to the second plurality of battery cells, wherein the at least one busbar is arranged over a first portion of the first battery module, and wherein the laminated busbar assembly further comprises:
• an insulative layer arranged adjacent to the at least one busbar, and
• a steel layer arranged adjacent to the at least one insulative layer and arranged between the at least one busbar and the plurality of battery cells, wherein the steel layer is configured to shield the at least one busbar from a thermal event associated with one or more battery modules of the plurality of battery modules.