NOVELTY - The cell connector (1) for a rechargeable battery such as a vehicle battery for an electric vehicle, comprises a cooling unit that is thermally connected to the cell connector, where the cooling unit comprises a cooling channel (2). The cooling channel is: arranged at an upper side of the cell connector facing away the battery cells; formed as a separate component such as an injection molded part comprising plastic, where two injection half-parts are friction welded together; and connected to a fluid circuit, in which a heating body and/or a cooling body is arranged.    USE - The cell connector is useful for a rechargeable battery such as a vehicle battery for an electric vehicle.    ADVANTAGE - The cell connector ensures optimal temperature control of the battery in the simple manner, and can be manufactured with high strength and reduced size.    DETAILED DESCRIPTION - The cell connector (1) for a rechargeable battery such as a vehicle battery for an electric vehicle, comprises a cooling unit that is thermally connected to the cell connector, where the cooling unit comprises a cooling channel (2). The cooling channel is: arranged at an upper side of the cell connector facing away the battery cells; formed as a separate component such as an injection molded part comprising plastic, where two injection half-parts are friction welded together; connected to a fluid circuit, in which a heating body and/or a cooling body is arranged; and partially integrated into the connector, where an inner wall of the cooling channel comprises an electrically insulating layer. An electrically insulating first layer (3) is arranged between the cooling channel and the connector. The cooling channel and/or the connector is predominantly encapsulated by an electrically insulating second layer (4). The electrically insulating layer is formed by a foil or a shell (4a, 4b) surrounding the cooling channel and/or the connector. The cooling channel is formed: with the insulating second layer surrounding the connector; and by a hydroforming process using a squeezed tube. A cross section of cooling channel amounts to 50% of the cross section of the connector. The cooling channel partially comprises a circular, oval, elliptical or rectangular closed profile, in which a flat contact surface is formed with the connector. An electronic control module is integrated in the connector.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic sectional view of a cell connector.    Cell connector (1)    Cooling channel (2)    Electrically insulating first layer (3)    Electrically insulating second layer (4)    Shells. (4a, 4b)