Battery connector

An electrically conductive bus bar for electrically connecting poles of two adjacent battery cells wherein the poles each have a mating face of a spheroid shape, the electrically conductive bus bar comprising:

• a top face and a bottom face opposed to the top face, wherein the bottom face comprises:
• a first connection area having a spheroid shape;
• a second connection area having a spheroid shape distal from each other;
• and
• holes passing through the bus bar about the first connection area and the second connection area, each hole being for passage of a fastening component attaching the electrically conductive bus bar to one of the poles of the two adjacent battery cells with the top face comprising an area about each of the holes for the fastening component to press against the bus bar towards the pole;
• and
• a body electrically connecting the first connection area to the second connection area, wherein the spheroid shapes of the first connection area and of the second connection area are complementary to the spheroid shapes of the mating faces of the poles of the two adjacent battery cells for optimizing contact surface over a range of relative positioning of the two adjacent battery cells.

A connector assembly for electrically connecting a pole of a first battery cell to an electrically conductive bus bar connected to a pole of an adjacent battery cell, the connector assembly comprising:

• an electrically conductive pole-mating component comprising a pole-mating face for mating with the pole of the first battery cell and a first adaptive-mating face;
• and
• an electrically conductive bar-mating component comprising a bar-mating face for mating with the electrically conductive bus bar and a second adaptive-mating face;
• and
• wherein the first adaptive-mating face and the second adaptive-mating face have complementary concave/convex arched shapes for mating with each other and optimizing a contact surface over a range of positioning of the adjacent battery cell relative to the first battery cell.