The factory will be Ford's first European plant to produce components for electric cars.
The investment will mean the plant will run for many years longer, said Stuart Rowley, president, Ford of Europe.
There had been speculation about the future of the Halewood factory complex as Ford moves towards electrifying its vehicles.
Up to £230m will be invested in the plant, with an undisclosed portion of that coming from the government's Automotive Transformation Fund.
Ford is not the first manufacturer to receive financial help for electric vehicle production through the fund, set up to encourage investment in electric vehicle manufacturing in the UK.
In July, Nissan said it would expand electric vehicle production at its car plant in Sunderland, with support from the government. And Nissan's partner, Envision AESC, will build an electric battery plant.
Source: BBC