The working principle of the hydrogen fuel cell vehicle is: send hydrogen to the anode plate (negative electrode) of the fuel cell, and through the action of the catalyst (platinum), an electron in the hydrogen atom is separated, and the hydrogen ion (proton) that loses the electron passes through The proton exchange membrane reaches the cathode plate (positive electrode) of the fuel cell, while electrons cannot pass through the proton exchange membrane. This electron can only reach the cathode plate of the fuel cell through the external circuit, thereby generating current in the external circuit. After the electrons reach the cathode plate, they recombine with oxygen atoms and hydrogen ions to form water. Since the oxygen supplied to the cathode plate can be obtained from the air, as long as the anode plate is continuously supplied with hydrogen, the cathode plate is supplied with air, and the water (vapor) is taken away in time, electricity can be continuously supplied. The electricity generated by the fuel cell is supplied to the electric motor through inverters, controllers and other devices, and then the wheels are driven to rotate through the transmission system and drive axle, so that the vehicle can drive on the road. Compared with traditional vehicles, the energy conversion efficiency of fuel cell vehicles is as high as 60 to 80%, which is 2 to 3 times that of internal combustion engines. The fuel of the fuel cell is hydrogen and oxygen, and the product is clean water. It does not produce carbon monoxide and carbon dioxide, nor does it emit sulfur and particulates. Therefore, hydrogen fuel cell vehicles are truly zero-emission, zero-pollution vehicles, and hydrogen fuel is the perfect vehicle energy source!