Patent ID: 11967685
Assignee: WEBASTO SE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery module for an electric vehicle, comprising:
a plurality of battery cells; and
an electrical resistance element arranged between the plurality of battery cells and configured to heat the plurality of battery cells, wherein:
the electrical resistance element is rod-shaped and comprises 1) a polymer composition having a positive temperature coefficient and 2) an outer surface having four concave sections having surface normal vectors, each surface normal vector pointing in a different direction,
the electrical resistance element contacts an outer surface of at least two battery cells from the plurality of battery cells;
a length of the electrical resistance element is greater than a length or a height of the at least two battery cells, and
the plurality of battery cells each comprise a cylindrical shape.