The core principle of the CarNeu systemlies in its advanced electrochemical reaction architecture, which efficiently converts hydrogen's chemical energy into electricity and thermal energy to create a zero-carbon integrated energy platform. Using pure hydrogen as fuel, the system facilitates silent conversion within the fuel cell stack to generate high-quality DC power, which is then converted by a precision inverter system into AC power for grid-connected or off-grid operations. Simultaneously, the system utilizes an integrated thermal recovery circuit to capture byproduct heat and deliver a stable supply of hot water, achieving cascaded energy utilization. With its superior compatibility and flexible power configurations, CarNeu can serve large-scale industrial requirements for chemical byproduct hydrogen consumption or support decentralized scenarios with refined integrated power and heat solutions, acting as a pivotal tool for a green and reliable energy transition.