Electro-chemical device e.g. lithium ion battery for driving motor vehicle, has cell link including contact area that is welded with cell terminal by welding seam formed at free surface made of corrosion-proof material

摘要

The device (100) has electro-chemical cells (104) provided with cell terminals (134, 136), and a cell link (132) for electrical conductive connection of the terminals. One of the terminals includes a corrosion protection layer made of a corrosion protection material. The cell link has a base body and a contact area made of another corrosion protection material connected with the base body. The contact area is welded with the former terminal by a welding seam that is formed at a free surface made of a corrosion-proof material that contains nickel and chrome.