What's the difference between new energy vehicles and pure electric vehicles?

First of all, the concept is different.

1. new energy vehicle: refers to an automobile that uses unconventional vehicle fuel as the power source (or conventional vehicle fuel or new vehicle-mounted power device), integrates advanced technologies in vehicle power control and drive, and has advanced technical principles, new technologies and new structures.

2. Pure electric vehicle: refers to a vehicle that is powered by on-board power supply and driven by motor and meets the requirements of road traffic and safety regulations.

Second, the advantages and disadvantages are different.

1, new energy vehicle: It has the advantages of low fuel consumption and less pollution, and solves the problems of high energy consumption such as air conditioning, heating and defrosting encountered by pure electric vehicles. Because there are multiple power sources, the whole vehicle can work at the same time, and the dynamic performance of the whole vehicle is excellent; The disadvantage is that the system structure is relatively complex; The fuel saving effect of long-distance high-speed driving is not obvious.

2. Pure electric vehicle: The advantage is that the technology is relatively simple and mature, and it can be charged as long as there is electricity; The disadvantage is that the energy stored in the battery per unit weight is too little, and the battery of electric vehicle is expensive, which does not form an economic scale, so the purchase price is expensive; As for the use cost, some trial results are more expensive than cars, and some results are only 1/7~ 1/3 of cars, mainly depending on battery life and local oil and electricity prices.

Performance characteristics of hybrid electric vehicle;

(1) The working state of the engine is not affected by the driving conditions of the vehicle, and it always runs stably in its optimal working area. Therefore, the engine has good economy and low emission index.

(2) Because there is a battery to "peak-regulate" the driving power, the power of the engine only needs to meet the power required for the stable operation of the car at a certain speed, so the engine with smaller power can be selected.

(3) There is no mechanical connection between the engine and the drive axle. Therefore, there is no requirement for the engine speed, and the engine selection range is wide. For example, you can choose high-efficiency prime movers such as high-speed gas turbines.

(4) There is no mechanical connection between the engine and the motor, so the structural arrangement of the whole vehicle has greater freedom.

(5) The output of the engine needs to be completely converted into electrical energy and then converted into mechanical energy to drive the car, and generators and motors with sufficient power are needed.

(6) A large battery capacity is needed to balance the output power of the generator and avoid overcharge or overdischarge of the battery.

(7) The generator converts mechanical energy into electrical energy, the motor converts electrical energy into mechanical energy, and there is energy loss when the battery is charged and discharged. Therefore, the energy utilization rate of engine output is relatively low.