CN-121973613-A - Whole-vehicle arrangement structure of range-extending electric tractor and tractor with same

Abstract

The invention relates to the field of commercial vehicles, in particular to a whole vehicle arrangement structure of a range-extended electric tractor and the tractor with the same, which comprises a frame, wherein a cab, a cooling unit, a power unit and a control unit are arranged on the frame; the cooling unit comprises a cooling module, a fluid circulation driving unit and a water cooling unit, wherein the power unit comprises a range extender and a power battery, a battery frame is arranged on the frame, the power battery and the water cooling unit are arranged on the battery frame, the control unit comprises an electric control integrated frame arranged on the frame, a plurality of control modules are arranged on the electric control integrated frame, the cooling module, the fluid circulation driving unit, the range extender and the electric control unit are arranged below a cab, and a key system (such as the lower part of the cab, the lower part of the battery frame and the two sides of the frame) is subjected to modularized partition design (such as cooling, power, electric control and braking/low pressure), so that extremely high space utilization is realized, and installation interference of components is avoided.

Inventors

• WANG DI
• XU JINGYE
• GUO XIJUN
• TU MINGJIN
• LI YU
• FU YIFAN
• Tang Qianqiao
• Jia Yaozong

Assignees

• 集瑞联合重工有限公司

Dates

Publication Date

20260505

Application Date

20260130

Claims (10)

1. 1. The whole vehicle arrangement structure of the range-extending electric tractor is characterized by comprising a frame, wherein a cab, a cooling unit, a power unit and a control unit are arranged on the frame; The cooling unit comprises a cooling module, a fluid circulation driving unit and a water cooling unit; the power unit comprises a range extender and a power battery; the frame is provided with a battery frame which is arranged outside a cab; The power battery and the water cooling unit are arranged on the battery frame; The control unit comprises an electric control integrated frame arranged on the frame, and a plurality of control modules arranged on the electric control integrated frame; the cooling module, the fluid circulation driving unit, the range extender and the electric control unit are arranged below the cab.
2. 2. The whole range-extending electric tractor arrangement structure is characterized in that a water cooling unit, a low-pressure tank, a high-pressure tank and a power battery are arranged on a battery frame, the water cooling unit, the low-pressure tank and the high-pressure tank are arranged at the upper end of the battery frame, the power battery is arranged below the water cooling unit, the low-pressure tank and/or the high-pressure tank, and an electric steering pump is arranged below the electric control integrated frame.
3. 3. The whole range-extending electric tractor arrangement structure according to any one of claims 1 or 2, wherein the power unit further comprises an oil tank unit and a secondary integrated unit, the oil tank unit comprises an oil tank arranged on a frame, the secondary integrated unit comprises a secondary integrated frame connected to the frame, and the oil tank unit and the secondary integrated unit are distributed on two opposite sides of the frame and are located below the battery frame.
4. 4. The whole range-extending electric tractor arrangement structure according to any one of claims 1 or 2, wherein the auxiliary integrated frame is provided with an electric inflating pump, a low-voltage storage battery, an air storage cylinder or/and an air processing unit, and the auxiliary integrated unit is arranged on one side of the frame away from a cab.
5. 5. The whole range-extending electric tractor arrangement structure according to claim 1, further comprising an isolation structure, wherein the isolation structure comprises a first isolation mechanism arranged below a cab and comprises a first isolation layer or/and an acoustic baffle plate arranged at the bottom of the cab, and the first isolation layer or/and the acoustic baffle plate is/are arranged at the periphery of the range-extending device.
6. 6. The whole range-extending electric tractor arrangement structure is characterized in that the range-extending device is connected with an exhaust pipe, a muffler is arranged on the exhaust pipe, the isolation structure further comprises a second isolation mechanism, and the second isolation mechanism comprises a second isolation layer wrapped on the exhaust pipe and/or the muffler.
7. 7. The whole range-extending electric traction vehicle arrangement structure according to claim 6, wherein the exhaust pipe and/or the muffler are arranged below the vehicle frame, and the exhaust pipe and/or the muffler are arranged on the side of the vehicle frame away from the cab.
8. 8. The whole range-extending electric tractor arrangement structure according to claim 1, wherein the range extender displacement is not more than 4L, and the total electric quantity of the power battery is not less than 350kwh.
9. 9. The range extender motor vehicle arrangement of claim 1, wherein the range extender is disposed in a mid-region below the cab.
10. 10. A tractor comprising a wheel assembly, a trailer and a range extending electric tractor vehicle arrangement as claimed in any one of claims 1 to 9.

Description

Whole-vehicle arrangement structure of range-extending electric tractor and tractor with same Technical Field The invention relates to the field of commercial vehicles, in particular to a whole vehicle arrangement structure of an extended-range electric tractor and the tractor with the same. Background With the increasing importance of global environmental protection and sustainable development, the motorized transformation of commercial vehicles has become an irreversible trend for the automotive industry. The new energy is particularly urgent due to the characteristics of high energy consumption and large emission of the tractor serving as an important carrier for road logistics transportation. The extended range electric tractor is used as an important technical path for electric transformation of commercial vehicles, effectively overcomes the shortages of short endurance mileage and insufficient charging infrastructure of the pure electric trucks, and is particularly suitable for transportation scenes such as medium and long-distance trunk logistics and the like. However, the range-extending electric tractor is provided with a range-extending system consisting of an engine-generator, so that system components are more complex than those of a pure electric tractor, and serious tests are brought to the whole vehicle space layout, axle load distribution, system integration level, heat management and cab NVH. Many existing solutions fail to achieve an optimal balance of efficiency and utility in terms of power and energy configuration strategies. One common idea is to simply transplant a large-displacement traditional engine as a range extender, which can ensure the power generation power, but leads to heavy system weight, complex structure and high thermal management load, and the engine is often operated in a non-efficient area, so that the fuel economy is poor. The other is that the battery capacity configuration is conservative, the pure electric endurance mileage is short, so that the range extender is frequently started and stopped, the advantages of electric driving cannot be fully exerted, the overall energy efficiency and the service life of components are reduced due to frequent system switching, and the improvement of the operation economy is limited. In terms of the spatial layout and the integration level of the whole vehicle, the existing design often faces serious challenges. The chassis space of the tractor is extremely tight, and a plurality of large-scale assemblies such as a large-capacity power battery, a range extender, an electric driving system, a cooling system, a gas storage system, a fuel oil system and the like are needed to be accommodated. Traditional 'flat-laid' layout is extremely prone to interference among components and tedious and messy pipelines. In order to install large batteries, reasonable positions of other systems are often sacrificed or effective bearing space of a frame is occupied, so that axle load distribution is unreasonable, and running stability is affected. In addition, the decentralized layout also makes the production and assembly complex, and the routine maintenance and troubleshooting are difficult. In terms of heat management performance, the range extender (engine) and the power battery have different requirements for heat dissipation, and the working temperature ranges are different. In the prior art, the two cooling systems are simply coupled to cause mutual interference of heat flows, complex control logic and low efficiency, or the cooling pipelines are roundabout and zigzag due to unreasonable layout of the systems, so that the circulation resistance and the pumping loss of the cooling liquid are increased, and the energy consumption and the reliability of the whole vehicle are influenced. In the aspect of driving comfort (NVH performance), the range-extended vehicle is provided with a plurality of noise vibration sources such as a driving motor, a range extender, various electric accessories (such as an inflating pump and a steering pump) and the like. If the noise source is not effectively isolated and shielded in the existing design, particularly high-noise components such as a range extender, an exhaust silencer and an air compressor are arranged at a position close to a cab, the noise and vibration level in the cab can be obviously increased, the comfort of long-distance driving is seriously affected, and the quality requirements of modern commercial vehicles are not met. The prior patent CN 217917633U discloses a fuel cell tractor, which discloses the technical content that a power cell is arranged in a cab, but the arrangement of a range extender is not optimized and improved in the whole. In order to improve or solve at least one of the above technical problems, there is a need to optimize the layout of existing range-extending electric tractors. Disclosure of Invention The invention aims to provide a whole vehicle arrangement structure o