Joining electrically conductive joining partners for transmitting high electrical currents, comprises e.g. subjecting contact area of joining partners to surface treatment, contacting parts to be joined, and applying compressive force

摘要

Joining electrically conductive joining partners for transmitting high electrical currents, comprises (i) subjecting a contact area of the first joining partner (1) and second joining partner (2) to a surface treatment, and forming a surface structure with elevations and depressions/valleys, (ii) homogeneously distributing an adhesively acting polymer or polymer mixture, in electrically conductive particles, and coating on surface in the joining region of one of the parts to be joined, and (iii) immediately contacting two parts to be joined, and (iv) applying a compressive force. Joining electrically conductive joining partners for transmitting high electrical currents, comprises (i) subjecting a contact area of the first joining partner (1) and second joining partner (2) in a respective joining region, to a surface treatment, to remove impurities and/or external layers, and forming a surface structure with elevations and depressions/valleys in the same or a further process step, (ii) homogeneously distributing an adhesively acting polymer or polymer mixture, in electrically conductive particles in a proportion above the percolation threshold, in dispersed form and coating on at least one surface in the joining region of one of the parts to be joined, and (iii) immediately contacting two parts to be joined with each other, at least in the joining region, and (iv) applying a compressive force, with which the joining partners are clamped against each other, at least for the duration of chemical curing (polycondensation, polyaddition, or polymerization) or the physical setting of the polymeric components of the adhesive system formed with the polymer or polymer mixture and the particles such that a plastic deformation of projections is formed, which leads to the formation of electrically conductive micro-contact (4) between the joining partners in the joint area. An electrical connection resistance of an electrically conductive connection is few mu ~o below the specific electrical resistance of the adhesive system and is stable at 200[deg] C depending on the used adhesive system.