The 5-in-1 integrated controller is a highly compact and intelligent power management unit designed for new energy commercial vehicles. It integrates multiple auxiliary power control functions into a single system, significantly improving space utilization while simplifying vehicle electrical architecture. With centralized control, high reliability, and intelligent power distribution, the controller reduces wiring complexity, enhances system stability, and enables efficient operation and diagnostics across key vehicle subsystems, making it an ideal solution for modern electric buses and heavy-duty platforms.