An electrical connection comprises a first conductor and a second conductor electrically connected to the first conductor. The first conductor has a first contact section with a first contact face laterally delimited by a first side face. The second conductor has a second contact section with a second contact face surrounded by a rim having a second side face. The second side face limits a contact space above the second contact face and the first contact face is arranged on the second contact face. A reservoir space is arranged between the first side face of the first contact face and the second side face of the rim, the reservoir space surrounds the first contact face and a sealing material is arranged in the reservoir space. The sealing material forms a sealing ring that seals an interface between the first contact face and the second contact face.

A welding structure includes: a first metal member and a second metal member that are superimposed and welded together. The first metal member has a hole. The second metal member includes a nugget portion where a part of the second metal member has been melted by heat of laser light and has re-solidified. A peripheral portion of the hole in the first metal member covers the nugget portion. A part of the nugget portion is exposed through the hole.

An electrical apparatus includes first and second welded members that are welded together. The first welded member has a first metal part and a first resin part covering part of the first metal part. The second welded member has a second metal part and a second resin part covering part of the second metal part. The first metal part has a first standing terminal portion exposed from the first resin part and standing in a standing direction. The second metal part has a second standing terminal portion exposed from the second resin part and standing in the standing direction. The first and second standing terminal portions are welded to each other so that a weld is formed therebetween. The first and second resin parts partially overlap each other in the standing direction. The weld is within a projection region of the first and second resin parts in the standing direction.

An electric energy transmission aluminum part and a machining process therefor including an aluminum conductive device (1) and an aluminum cable, with the aluminum cable including an aluminum conductive core (2) and an insulation layer (3) cladding a surface of the aluminum conductive core (2). An exposed section of the aluminum conductive core (2) with the insulation layer (3) stripped from the aluminum cable and at least part of the aluminum conductive core (2) clad with the insulation layer (3) are crimped inside the aluminum conductive device (1). A transition section (4) with a trapezoidal axial cross-section is provided at a junction between the insulation layer (3) and the exposed section of the aluminum conductive core (2) in the aluminum conductive device (1). Taking the transition section (4) as a demarcation point, an inner diameter of an end of the aluminum conductive device (1) that is crimped with the insulation layer (3) is greater than an inner diameter of an end of the aluminum conductive device (1) that is crimped with the aluminum conductive core (2). At least one concave structure is provided on a periphery of the aluminum conductive device (1). The concave structure provided on the surface of the aluminum conductive device (1) can effectively prevent the aluminum conductive device (1) from moving relative to a clamp, so as to solve the problem of displacement or rotation of the aluminum conductive device (1) in the clamp during welding, and improve the welding efficiency and the yield.

A wire connection terminal and a welding joint. The novel wire connection terminal includes a terminal substrate (1) provided with a fixing portion for connecting with an electric device and a connecting portion for connecting with a wire (2). The fixing portion is provided with an assembly structure for being assembled with the electric device. The connecting portion is provided with a boss (13) formed by punching the connecting portion for connecting with the wire (2). The wire connection terminal is used for directly welding processing by matching a welding fixture, so as to improve the processing accuracy of the terminal, and avoid brittleness and breakage caused by stress concentration of the terminal.

A copper-aluminum composite electric energy transmission system and a processing method therefor are disclosed. The system includes a copper terminal (1) and an aluminum cable (6). The aluminum cable (6) includes an aluminum conductor (2) and an insulation layer (3) cladding a periphery of the aluminum conductor (2). The system further includes an electric energy transmission aluminum piece (4), in which a section of the aluminum conductor (2) with the insulation layer (3) stripped from the aluminum cable is pressed to form a connecting piece. The electric energy transmission aluminum piece (4) and a front end of the aluminum conductor (2) form a molten layer (5). An end of the copper terminal (1) for being welded to the electric energy transmission aluminum piece (4) is provided with a welding platform (11). The molten layer (5) dads the welding platform (11) to form a transition layer (12) with metal atoms penetrating into or combined with each other. By reducing an internal stress between copper and aluminum, the mechanical property of a copper-aluminum welding joint is improved. Copper-aluminum compounds in the transition layer (12) are reduced, and the electrical property of the copper-aluminum welding joint is improved. Meanwhile, a path of the transition layer (12) to resist an erosion from an external environment is extended, thereby solving the metal corrosion problem of the copper-aluminum welding joint, and prolonging the service life.

A power semiconductor module has a substrate, with power semiconductor components, and a DC voltage connecting device, which has a first and a second flat conductor connecting element and at least one first metal layer connecting element and at least one second metal layer connecting element, wherein the second flat conductor connecting element is arranged spaced apart in the normal direction of the first flat conductor connecting element from the first flat conductor connecting element, the first flat conductor connecting element is electrically connected by the first metal layer connecting element and the second flat conductor connecting element is electrically connected by the second metal layer connecting element to the metal layer, the first flat conductor connecting element has a flat conductor end section and a flat conductor connection section arranged between the one first metal layer connecting element and the flat conductor end section.

An electrical connection terminal and an electrical connection assembly are disclosed. The electrical connection terminal has a base, and a plurality of tabs connected to the base. The plurality of tabs are separated from each other, and each of the plurality of tabs is adapted to mate with a mating terminal in a plug-in manner. In the present invention, the electrical connection terminal adopts a plurality of parallel tabs, so the length of the electrical connection terminal and the current flow path through the electrical connection terminal are reduced. Therefore, the electrical connection terminal of the present invention has low body resistance, less heating and is more suitable for high current applications.

A method of manufacturing an electrical connector includes: contacting an end portion of a center conductor exposed in an end portion of a coaxial cable having the center conductor with a conductive contact; applying ultrasonic vibration to the end portion of the center conductor and the contact to join the end portion of the center conductor and the contact each other; and accommodating the contact in an insulation housing after the end portion of the center conductor and the contact are joined to each other, and covering at least a part of a joint of the end portion of the center conductor and the contact with the insulation housing.

A method includes disposing a terminal pin on an electronic substrate with a base region of the terminal pin in contact with a circuit trace on an electronic substrate, and ultrasonically coupling the base region of the terminal pin to the circuit trace.