Abstract: (Problem) To provide an electric cable connection method for joining terminal conductors in an assembled state and a joined electric cable. (Solution to the Problem) An electric cable connection method is a method for connecting exposed terminal conductors 21a of a plurality of covered electric cables 20 so as to be conductive. The electric cable connection method includes an assembly step s2 of assembling the covered electric cables 20; a fixing step s3 of fixing the terminal conductors 21a of the assembly of the plurality of electric cables 20 with a resin cover 50; and a joining step s4 of setting the plurality of covered electric cables having the plurality of terminal conductors 21a fixed with the resin cover 50 in an electric cable connection device 40, and joining the plurality of exposed terminal conductors 21a.

Abstract: An ultrasonic welding method for conductors is provided that is capable of suppressing occurrence of insufficient weld strength and a separation which may occur when terminals of a wires are ultrasonically welded. In a wire arranging step, wires are arranged in accordance with a predetermined arrangement. In a conductor moving step, conductors (2) are pressed in a predetermined direction by a grinding jaw (12), and thereby relative positions among the conductors (2) are changed. In a first ultrasonic welding step, ultrasonic welding is performed on the conductors (2) in a state of being pressed by the grinding jaw (12). In a second ultrasonic welding step, the pressing applied by the grinding jaw (12) is released, and ultrasonic welding is performed on the conductors (2).

Abstract: To provide an ultrasonic welding method for conductors that is capable of suppressing occurrence of insufficient weld strength and a separation which may occur when terminals of a plurality of wires are ultrasonically welded. In a wire arranging step, a plurality of wires are arranged in accordance with a predetermined arrangement. In a conductor moving step, conductors (2) are pressed in a predetermined direction by a grinding jaw (12), and thereby relative positions among the conductors (2) are changed. In a first ultrasonic welding step, ultrasonic welding is performed on the conductors (2) in a state of being pressed by the grinding jaw (12). In a second ultrasonic welding step, the pressing applied by the grinding jaw (12) is released, and ultrasonic welding is performed on the conductors (2).