Which common electric tractor is suitable for long-distance running?

In recent years, the national emphasis on environmental protection has been increasing, and the new energy of vehicles has gradually become a trend, especially in the field of passenger cars. Almost all major brands have launched new energy models. As the international fuel price continues to rise, many heavy vehicles also began to enter the field of new energy.

At present, new energy heavy vehicles are more common in the market, mainly including electric dump trucks, electric trucks, electric tractors, electric special vehicles, electric sanitation vehicles and so on. Today, let's focus on the electric tractors.

Electric tractors can be subdivided into pure electric tractors and hybrid tractors.

First, pure electric tractor.

Pure electric tractor refers to a tractor driven entirely by electricity.

According to its recharge mode, and can be divided into charging type and electric change type. The charging type requires the vehicle to load the power battery and rely on the external charging pile to charge; The electric change is the use of vehicle electric separation mode, relying on the external changing station to replace the battery.

At present, the penetration rate of pure electric tractor is relatively poor, the main reasons are as follows:

1. High vehicle weight. After the tractor is loaded with batteries, it is heavier than the fuel tractor of the same specification, generally about 3t more. Because the tractor in addition to driving itself but also to provide driving force for the semi-trailer, the number of batteries and endurance requirements are relatively high, to a certain extent, also led to its high self-esteem.

2. Charging of rechargeable tractor is slow and inconvenient. Slow charging is a common drawback of rechargeable tractor, generally full of several hours, even if the use of fast charging, generally need about an hour, for the transport timeliness requirements of the semi-trailer is not suitable. In addition, the highway charging pile installation is less, medium - and long-distance transport vehicles charging inconvenience.

3. The cost and difficulty of electric replacement are high. Compared with the rechargeable tractor, the electrically-changing type can reduce the time consumption caused by charging, but in the construction and use of the electrical changing station, the requirements for the place, intelligence, technology, cost and so on are very high, so it is difficult to popularize.

4. The range is limited. Due to the low battery energy density, the range of general electric tractors can not meet the needs of medium and long distance transportation.

5. High purchase cost and use cost. It is understood that the electric tractor whether the purchase cost or use cost, are much higher than the traditional fuel tractor, the average user can not afford.

Two, hybrid tractor.

Hybrid tractor refers to the tractor driven by electricity and fuel, which can be divided into three types: gas-electric hybrid, plug-in hybrid and extended-range electric.

1. Petrol-electric hybrid.

The driving force is provided by both a fuel engine and an electric motor. Generally, its battery capacity is relatively small, no charging interface is provided, and the energy recovery during the operation of the tractor is used for charging. The motor power of this model is not large, and the motor assists the engine to provide power in the starting and acceleration scenarios, reducing fuel consumption and improving operation efficiency.

The advantage is no charge, use more convenient; The disadvantage is that the dependence on fuel is larger, the emission of pollutants is still relatively high.

2. Plug-in hybrid power.

Plug-in hybrid tractors are powered by both an engine and an electric motor, and can be combined according to different modes of the two, such as pure electric, pure fuel, electric fuel and so on.

The advantage is the design of the charging port, can be charged at any time. Pure electric mode can be used when the power is sufficient, and pure fuel mode can be used when the power is insufficient. It is suitable for middle and long distance running, and the effect of energy saving and emission reduction is better. The disadvantage is that the technology is more complex, and the contradiction between battery weight and endurance is not well coordinated.

3. Extended-range electric.

Extended range electric tractor refers to a tractor that is powered by an engine and driven by an electric motor. When the battery is sufficient, pure electric mode is adopted. When the battery is insufficient, the engine in the car starts and drives the generator to charge the power battery.

The advantage is that the mileage is long, the disadvantage is that when running at high speed because it needs the engine to drive the generator, high fuel consumption, can not get rid of the dependence on fuel.

For electric tractor, in order to get a wide range of popularity, it is also necessary to coordinate the weight, traction, driving range, cost, emissions and other factors, among which the weight of the semi-trailer is also an important influence condition, no matter what type of tractor, the better the lightweight conditions of the traction of the semi-trailer, the more conducive to energy saving and emission reduction.

The disc trailer axles produced by DARO Group adopts the American classic "one-piece" heat treatment process to manufacture and form, and the bearing capacity has been greatly improved. Compared with the ordinary products of the same specifications, each axle can reduce the weight of about 15%, which helps the owner to save fuel, reduce tire damage, and reduce the comprehensive vehicle cost. DARO trailer axles can be customized according to the needs of users to provide personalized service, perfect matching vehicles, to meet the requirements of different owners.