Abstract：In response to the evolution of megawatt-class charging standards for commercial vehicles and the requirements for the construction of electric heavy-duty truck charging stations, this paper takes an electric heavy-duty truck charging station in Bijie, Guizhou, as its subject of study, and conducts a comparative analysis of the technical bottlenecks, economic viability and engineering applicability of integrated and split-type charging piles. The study finds that the power output per charging point has evolved from the early 3.3 kW to the megawatt level (1 MW+), whilst the surface heat flux density of air-cooling at 360 kW reaches 0.36 W/cm2, approaching the physical limit; liquid cooling technology is therefore an inevitable trend for achieving ultra-fast charging. Quantitative comparisons show that for a 8 parking spaces (16-guns) installation, although the equipment procurement cost of the split-type solution is slightly higher, optimizing the low-voltage layout results in cable costs that are 130 900 yuan lower than the integrated solution, a reduction of 37.6%, leading to an overall reduction in initial investment of approximately 1.45%. Based on a comprehensive analysis of reliability and flexibility, the following selection principles are recommended: for sites with limited space, where individual vehicle battery capacity is ≤425 kW∙h and construction efficiency is a priority, integrated charging piles should be the preferred choice; whereas for high-traffic stations with future requirements for power upgrades, the split-type charging stack should be selected to achieve better overall life cycle investment benefits and investment protection.
何康为, 袁贵涛. 基于贵州毕节某电动重卡充电站的充电桩选型对比研究[J]. 电气技术, 2026, 27(9): 73-77.
HE Kangwei, YUAN Guitao. A comparative investigation into charging point selection at a station in Bijie, Guizhou. Electrical Engineering, 2026, 27(9): 73-77.
2026, Vol. 27 
