In recent years, driven by a growing emphasis on driver well-being within the logistics industry and increasingly strict societal demands for energy conservation and emission reductions in commercial vehicles, DC electric truck air conditioners (often referred to as "parking coolers") are rapidly transitioning from optional extras to standard equipment. Designed specifically for use during stationary periods—such as waiting or overnight rest—this onboard electrical system is profoundly transforming the lifestyle of millions of long-haul truck drivers and has become a focal point of technological innovation in the commercial vehicle sector.

In recent years, driven by the rapid expansion of the logistics and transportation sector and drivers' ever-increasing demands for in-cab comfort, DC electric air conditioning systems for trucks are rapidly transitioning from optional accessories to standard equipment. Against a backdrop of increasingly stringent environmental regulations and continuously rising fuel costs, this technological solution has won the favor of a growing number of truck drivers and logistics companies, thanks to its advantages in energy efficiency, quiet operation, and zero idling emissions.