In long-haul road transport, truck drivers have long faced a persistent dilemma: during summer stops or overnight rest periods, activating the air conditioning required keeping the diesel engine idling for extended periods. This practice not only consumes vast amounts of fuel and generates noise and exhaust fumes but also accelerates engine wear. In recent years, driven by upgrades to onboard electrical systems and the spillover of new energy technologies, electric air conditioning for trucks is rapidly transitioning from an optional extra to a mainstream standard—emerging as a pivotal solution for improving drivers' working environments while simultaneously reducing operating costs and carbon emissions.