Heavy transport vehicle multi-power coupling timely full-drive system and control method

Abstract

The invention discloses a heavy transport vehicle multi-power coupling timely full-drive system and a control method, the system comprises a hybrid power driving system, an electric driving system, avehicle control unit (VCU) and an electric control unit, the hybrid power driving system is used as a main power source of the vehicle, and the electric driving system is used as an auxiliary drivingsystem. According to the control method, a pure electric mode, a pure fuel oil mode, a combined driving mode and a driving charging mode are executed according to different working conditions, so thatthe engine works in an efficient interval most of time, and meanwhile, the SOC value of the battery is kept in a range beneficial to the battery; the hybrid power driving system is arranged on a tractor, the electric driving system is arranged on a vehicle body, all-wheel driving can be achieved, energy interaction can also be conducted, and the design of the two sets of driving systems and the multiple motors can provide stable and super-large driving force for the heavy transport vehicle. And the driving system is assisted by electric power, so that the power performance and the economic fuel performance of the engine are improved, and the power performance of the whole vehicle is greatly improved.

Description

technical field [0001] The invention relates to a multi-power coupling timely full-drive system and a control method of a heavy-duty transport vehicle, belonging to the technical field of vehicle power. Background technique [0002] Heavy-duty transport vehicles are an important part of my country's road transport. Ordinary heavy-duty transport vehicles are responsible for the long-distance transportation of daily necessities such as vegetables, fruits, and express delivery; special heavy-duty transport vehicles designed for specific environments undertake special transport tasks, such as heavy-duty Military transport vehicles undertake the task of transporting military equipment such as missiles; it can be seen that heavy transport vehicles play a very important role in both civilian and special fields. Heavy-duty transport vehicles have long transport distances, heavy loads, and complex road conditions in remote areas. Therefore, heavy-duty transport vehicles are required t...

AI Technical Summary

Problems solved by technology

[0003] At present, the driving mode of heavy-duty transport vehicles is single, mainly driven by pure fuel-powered technology, but limited by fuel quality and engine structure principles, there is little room for further improvement of engine drive power and efficiency by improving fuel characteristics, and heavy-duty transport vehicles have little The reliability requirements of the power system are very high, and a single drive device cannot meet the requirements

Patent 201810136031.8 discloses a hybrid system and a decision-making method for vehicle working modes. It proposes to arrange two sets of power systems on the vehicle, one for traditional fuel power and the other for power generation. This scheme arranges two power systems on the vehicle. engine, the structure is relatively complex, the required space is large, and the practical application is relatively difficult

Patent 201810218438.5 discloses a distributed hybrid power system and power switching method for heavy-duty transport vehicles. It proposes that a hybrid power system be arranged on both the tractor and the trailer. The two hybrid power systems have complex structures, high control difficulties, low reliability, and are difficult to apply in reality

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