Sevcon Inc. was an eProducts company, that manufactured controls for electric vehicles. In September 2017, Sevcon was acquired by BorgWarner.[1]
History
Early years
Sevcon Engineering Ltd. was founded in 1961.[2] The company was formed to develop technology originated by Horace William Heyman (13 March 1912 - 4 September 1998), who had been managing director of Smith Electric Vehicles from 1949 until 1964. It was the largest manufacturer of electric vehicles in Europe.
Heyman's technology improved battery life for frequent start-stop runs of electric vehicles at low speeds. There were always large electrical losses on starting an electric vehicle because of electrical resistances heating up. The technology allowed a 20% reduction in battery size for equivalent power, or increased battery length or power for a standard-sized battery.