In the aluminum devices used in new energy vehicles, the layout forms of hybrid vehicles can be divided into three types: hybrid parallel type, series type, and parallel-series type. Among them, the layout form of the aluminum device for new energy vehicles in the series type refers to that the engine can drive the generator to generate electricity. The electricity generated by the generator can be directly transmitted to the motor through the controller of the motor, and then the motor generates electromagnetic force to drive the operation of the new energy vehicle device, which is characterized by this material form. 

Some new energy vehicles have generators that operate independently of the specific driving conditions of the vehicle. They always maintain a stable operating range and can run reliably. Therefore, this type of engine has better economic benefits and lower emission indicators. Since there is a battery that can adjust the power, the engine only needs to meet the power requirement for the aluminum device of the new energy vehicle to run stably at a certain speed. Thus, at this time, we can choose an engine with a lower power output. 
There is no fixed mechanical connection between the engine and the drive axle. Therefore, there are no specific requirements for the engine's rotational speed. The selection range of engines is often quite wide. For example, a gas turbine or other more efficient prime movers can be chosen. Moreover, since there is no mechanical connection between the engine and the electric motor either, the structural layout of the overall new energy vehicle is relatively flexible. 
The output of the engine needs to be fully converted into electrical energy, and then transformed into mechanical energy that can drive the devices of the new energy vehicle. At this point, a motor and generator with sufficient power are required. If a good balance of output power is to be achieved and to avoid the problem of batteries easily over-discharging or over-charging, a generator with a larger battery capacity is needed, which can convert mechanical energy into electrical energy, and the motor can convert electrical energy into mechanical energy. During the charging and discharging process of the battery, there are energy losses, so the utilization rate of the engine's output energy is relatively low. 
In the aluminum devices used in new energy vehicles, the parallel configuration means that the engine is connected to the drive axle through a mechanical transmission device, and the electric motor is also connected to the drive axle through a power composite device. The vehicle can be driven jointly by the engine and the electric motor or driven separately by each of them. Its performance characteristics include: The engine directly drives the vehicle through the mechanical transmission mechanism, with no energy conversion loss from mechanical to electrical, so the utilization rate of the engine's output energy is relatively high. When the driving conditions of the vehicle cause the engine to operate within its optimal working range, the fuel economy of the parallel configuration is higher than that of the series configuration. Moreover, the electric motor has a "peak shaving" function, and the power of the engine can also be appropriately reduced.