By Christoph Steitz FRANKFURT (Reuters) – U.S. carmaker Ford on Monday unveiled plans for seven new electric models in Europe, a battery-assembly site in Germany and a nickel cell manufacturing joint venture in Turkey as part of a major electric vehicle (EV) push on the continent. “Our march toward an all-electric future is an absolute necessity for Ford to meet the mobility needs of customers across a transforming Europe,” said Stuart Rowley, chair of Ford of Europe. Ford said it would introduce three new electric passenger vehicles and four new electric commercial vehicles in Europe by 2024,…