By Ali Lyon An innovative battery firm nominated for the “Nobel Prize of Engineering” is set to raise a Series B funding round in a few months, with a future IPO becoming an increasingly “realistic proposition”, its boss has said. Sunamp, which makes it easier for green heat pumps to be installed in smaller homes by replacing a large hot water tank with its smaller batteries, was last week shortlisted for the Royal Academy of Engineering’s Macrobert Award alongside Google Deepmind, and the University of Oxford and Astrazeneca for the rollout of their Coronavirus vaccine. Speaking to City A.M. …