As the core equipment in the field of electric vehicle charging, DC charging piles are based on the principle of efficiently converting alternating current (AC) power from the grid into DC power, which is directly supplied to electric vehicle batteries, realising fast charging. This technology not only simplifies the charging process, but also significantly improves charging efficiency, which is an important driving force for the popularisation of electric vehicles. The advantage of DC charging piles lies in their efficient charging capability, which can significantly shorten the charging time and meet the user’s demand for fast replenishment. At the same time, its high degree of intelligence makes it easy for users to operate and monitor, which improves the convenience and safety of charging. In addition, the wide application of DC charging piles also helps to promote the improvement of electric vehicle infrastructure and the popularity of green travelling.