Whole vehicle arrangement structure of bottom displacement electric tractor

Abstract

The utility model provides a whole vehicle arrangement structure of a bottom displacement electric tractor, which comprises a frame, a front suspension arranged at the front end part of the frame and a rear suspension arranged at the rear end part of the frame; a cab installed at the front end of the frame; the battery replacing system is arranged at the bottom of the frame and located between the front suspension and the rear suspension; the integrated cooling system is arranged at the middle part of the front end part of the frame and is used for cooling the battery replacing system; the electric drive axle system is arranged in the middle of the rear end of the frame, the no-load ground clearance of the lowest end of the battery replacing system ranges from 400 mm to 420 mm, the lowest end of the battery replacing system is 330 mm to 340 mm away from the lower wing face of the frame, the gap between the front end of the battery replacing system and the chassis front accessory system ranges from 40 mm to 50 mm, and the gap between the rear end of the battery replacing system and the chassis rear accessory system ranges from 55 mm to 60 mm. Through the modular structural design, the spatial arrangement of all systems of the whole vehicle is more reasonable, and the requirement for bottom replacement of the whole vehicle is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive structure design, and particularly relates to an overall vehicle layout structure of a bottom replacement electric tractor. Background Art

[0002] In recent years, the domestic pure electric heavy truck market has developed rapidly. The battery replacement heavy truck has become the main part of the new energy heavy truck sales because it can well solve the pain points such as the high purchase cost of pure electric vehicles and the long charging time.

[0003] The current mainstream battery replacement traction vehicle models in the market all adopt the layout scheme of the rear-mounted battery replacement system. The advantage of this layout scheme is that the power battery, battery cooling and battery management system are integrally arranged in the rear battery replacement frame, and the overall vehicle layout is simple and the integration degree is high.

[0004] With the increasing demand of customers for the one-way driving range of heavy truck models, the demand for large-capacity battery replacement tractors is increasing day by day. However, the current mainstream battery capacity of the rear-mounted battery replacement is too low and the upgrading potential is small. Moreover, due to the excessive overall vehicle height of the rear battery tractor, increasing the battery capacity will cause the overall vehicle height to continue to increase, the overall vehicle center of mass to be too high, resulting in poor handling stability of the overall vehicle and easy rollover, and the aesthetics is also very poor. Summary of the Utility Model

[0005] In order to solve the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide an overall vehicle layout structure of a bottom replacement electric tractor.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides an overall vehicle layout structure of a bottom replacement electric tractor, having the following characteristics, including: a frame, with a front suspension provided at the front end and a rear suspension provided at the rear end; a cab, installed at the front end of the frame; a battery replacement system, arranged at the bottom of the frame and located between the front suspension and the rear suspension; an integrated cooling system, arranged in the middle part of the front end of the frame for cooling the battery replacement system; and an electric drive axle system, arranged in the middle part of the rear end of the frame. Among them, the unloaded ground clearance of the lowest end of the battery replacement system is 400 - 420 mm, and the distance from the lower wing surface of the frame is 330 - 340 mm. The clearance between the front end of the battery replacement system and the front chassis accessory system is 40 - 50 mm, and the clearance between the rear end of the battery replacement system and the rear chassis accessory system is 55 - 60 mm.

[0008] In the overall vehicle layout structure of the bottom replacement electric tractor provided by the utility model, it may also have the following characteristics: further including: a power battery shield, arranged above the battery replacement system.

[0009] In the overall vehicle layout structure of the bottom-swapping electric tractor provided by the present utility model, it may also have the following characteristics: among them, the gap between the power battery shield and the upper wing surface of the vehicle frame is 40 - 50 mm.

[0010] In the overall vehicle layout structure of the bottom-swapping electric tractor provided by the present utility model, it may also have the following characteristics: among them, the vehicle frame adopts a variable-width structure that is wide at the front end and narrow at the middle and rear ends.

[0011] In the overall vehicle layout structure of the bottom-swapping electric tractor provided by the present utility model, it may also have the following characteristics: among them, the width of the front end of the vehicle frame is 940 mm, and the widths of the middle and rear ends of the vehicle frame are 850 mm.

[0012] In the overall vehicle layout structure of the bottom-swapping electric tractor provided by the present utility model, it may also have the following characteristics: among them, the cab is a medium-length flat-top cab, and the height of the floor of this medium-length flat-top cab is raised by 45 - 55 mm compared to the height of the floor of a standard cab.

[0013] In the overall vehicle layout structure of the bottom-swapping electric tractor provided by the present utility model, it may also have the following characteristics: among them, the integrated cooling system shares a radiator with the air-conditioning system of the tractor.

[0014] In the overall vehicle layout structure of the bottom-swapping electric tractor provided by the present utility model, it may also have the following characteristics: among them, the electric drive axle system is directly connected to the drive shaft of the wheel.

[0015] Functions and Effects of the Utility Model

[0016] According to the overall vehicle layout structure of the bottom-swapping electric tractor involved in the present utility model, since the battery swapping system is arranged at the bottom of the vehicle frame and between the front suspension and the rear suspension, the integrated cooling system is arranged in the middle part of the front end of the vehicle frame, the electric drive axle system is arranged in the middle part of the rear end of the vehicle frame, the no-load ground clearance of the lowest end of the battery swapping system is 400 - 420 mm and it is 330 - 340 mm away from the lower wing surface of the vehicle frame, the gap between the front end of the battery swapping system and the front chassis accessory system is 40 - 50 mm, and the gap between the rear end of the battery swapping system and the rear chassis accessory system is 55 - 60 mm. Through the modular structure design, the spatial layout of each system of the whole vehicle is made more reasonable, and the requirement of bottom battery swapping of the whole vehicle is realized. Description of the Drawings

[0017] Figure 1 is a side view of the overall vehicle layout structure of the bottom-swapping electric tractor in the embodiment of the present utility model;

[0018] Figure 2 is a top view of the overall vehicle layout structure of the bottom-swapping electric tractor in the embodiment of the present utility model; and

[0019] Figure 3 It is the top view of the frame system in the embodiment of the present utility model. Detailed implementation manners

[0020] The concept, specific structure and technical effects of the present utility model will be further described below in conjunction with the drawings to fully understand the purpose, features and effects of the present utility model.

[0021] <Embodiment>

[0022] [[ID=1']]<Reference> Figures 1 to 3 As shown in [reference figure], the overall vehicle layout structure 10 of the bottom replacement electric tractor provided by the embodiment of the present utility model includes a frame 11, a cab 12, a battery swapping system 13, an integrated cooling system 14 and an electric drive axle system 15.

[0023] A front suspension 111 is provided at the front end of the frame 11, and a rear suspension 112 is provided at the rear end. In this embodiment, the frame 11 adopts a variable-width structure that is wide at the front end and narrow in the middle and at the rear end to optimize space utilization; the width of the front end of the frame 11 is 940 mm, which can meet the layout requirements of the air pump and the integrated steering oil pump system and the widened integrated cooling system 14; the width of the middle and rear ends of the frame 11 is 850 mm, which can ensure the battery swapping system 13 assembled thereon; the overall vehicle wheelbase is 4100 + 1350 mm, which can meet the layout and space requirements of the battery swapping system 13; the rear overhang of the frame 11 is 800 mm, which can ensure the assembly of the electric drive axle system 15 and its high-voltage wiring harness.

[0024] The cab 12 is installed at the front end of the frame 11 and adopts a medium-length flat-top cab. The height of the bottom plate of this medium-length flat-top cab is raised by 45 - 55 mm compared with the height of the floor of the standard cab, aiming to meet the space requirements brought by the high-voltage electrical cabin or other key equipment cabins to ensure sufficient and reasonable layout of the internal space of the cab; in this embodiment, the height of the bottom plate of the medium-length flat-top cab is raised by 50 mm compared with the height of the floor of the standard cab.

[0025] The battery swapping system 13 is arranged at the bottom of the vehicle frame 11 between the front suspension 111 and the rear suspension 112. The layout optimization enables the free combination of the power battery boxes, achieving customized total power of the power batteries. The unloaded ground clearance at the lowest end of the battery swapping system 13 is 400 - 420 mm and the distance from the lower wing surface of the vehicle frame 11 is 330 - 340 mm. The clearance between the front end and the chassis front accessory system including the front suspension and the front fender is 40 - 50 mm, and the clearance between the rear end and the chassis rear accessory system including the rear fender is 55 - 60 mm, which can well meet the battery swapping requirements of the battery swapping system 13; in this embodiment, the unloaded ground clearance at the lowest end of the battery swapping system 13 is 410 mm and the distance from the lower wing surface of the vehicle frame 11 is 335 mm, the clearance between the front end and the chassis front accessory system is 42 mm, and the clearance between the rear end and the chassis rear accessory system is 57 mm.

[0026] The integrated cooling system 14 is arranged in the middle part of the front end of the vehicle frame 11 and is used to cool the battery swapping system 13. In this embodiment, the integrated cooling system 14 shares the radiator with the air conditioning system of the tractor, which not only reduces the number of radiators, saves the layout space, but also improves the integration and efficiency of the system.

[0027] The electric drive axle system 15 is arranged in the middle part of the rear end of the vehicle frame 11 and is directly connected to the drive shaft of the wheel, thus directly driving the wheel. In response to the space challenges brought by the layout of the battery swapping system 13, the non-drive shaft setting is adopted, and the electric drive axle system 15 directly drives the wheel, effectively solving the problem of traditional drive shaft layout and ensuring the high efficiency and stability of power output.

[0028] In this embodiment, the overall vehicle layout structure 10 of the bottom-mounted battery swapping tractor also includes a power battery shield 16 arranged above the battery swapping system 13 to protect the battery swapping system 13. The clearance between the power battery shield 16 and the upper wing surface of the vehicle frame 11 is 40 - 50 mm, which can meet the movement clearance requirements of the tractor. In this embodiment, the clearance between the power battery shield 16 and the upper wing surface of the vehicle frame 11 is 44 mm; the outer width dimension of the power battery shield 16 is 2450 mm, which can meet the clearance requirements during the movement of the tractor.

[0029] In this embodiment, based on the combined action of the vehicle frame 11 and the battery swapping system 13, on the premise of meeting the requirements of the battery swapping system, the overall vehicle wheelbase is 4100 + 1350 mm, effectively reducing the overall vehicle length to 7775 mm, and the overall vehicle height ≤ 3200 mm.

[0030] Functions and effects of the embodiment

[0031] According to the overall vehicle layout structure of the bottom replacement electric tractor involved in this embodiment, since the battery swapping system is arranged at the bottom of the frame and between the front suspension and the rear suspension, the integrated cooling system is arranged at the middle part of the front end of the frame, and the electric drive axle system is arranged at the middle part of the rear end of the frame. The no-load ground clearance at the lowest end of the battery swapping system is 400 - 420 mm and it is 330 - 340 mm away from the lower wing surface of the frame. The clearance between the front end of the battery swapping system and the front chassis accessory system is 40 - 50 mm, and the clearance between the rear end of the battery swapping system and the rear chassis accessory system is 55 - 60 mm. Through the modular structure design, the spatial layout of each system of the whole vehicle is made more reasonable, and the requirement of bottom replacement battery swapping of the whole vehicle is realized.

[0032] The above embodiments are preferred cases of the present invention and are not used to limit the protection scope of the present invention.

Claims

1. An overall vehicle layout structure of a bottom replacement electric tractor, characterized in that, Comprising: A frame with a front suspension provided at the front end and a rear suspension provided at the rear end; A cab mounted at the front end of the frame; A battery swapping system provided at the bottom of the frame and located between the front suspension and the rear suspension; An integrated cooling system provided at the middle part of the front end of the frame for cooling the battery swapping system; And An electric drive axle system provided at the middle part of the rear end of the frame, wherein the unloaded ground clearance of the lowest end of the battery swapping system is 400 - 420 mm and the distance from the lower wing surface of the frame is 330 - 340 mm, the clearance between the front end of the battery swapping system and the front chassis accessory system is 40 - 50 mm, the clearance between the rear end of the battery swapping system and the rear chassis accessory system is 55 - 60 mm.

2. The overall vehicle layout structure of the bottom replacement electric tractor according to claim 1, wherein It further comprises: A power battery shield provided above the battery swapping system.

3. The overall vehicle layout structure of the bottom - mounted battery - swapping tractor according to claim 2, characterized in that: Among them, The clearance between the power battery shield and the upper wing surface of the frame is 40 - 50 mm.

4. The overall vehicle layout structure of the bottom - mounted battery - swapping tractor according to claim 1, characterized in that: Among them, The frame adopts a variable - width structure that is wide at the front end and narrow at the middle and rear ends.

5. The overall vehicle layout structure of the bottom - mounted battery - swapping tractor according to claim 4, characterized in that: Among them, The width of the front end of the frame is 940 mm, The width of the middle and rear ends of the frame is 850 mm.

6. The overall vehicle layout structure of the bottom - mounted battery - swapping tractor according to claim 1, characterized in that: Among them, The cab is a medium - length flat - top cab, and the height of the bottom plate of the medium - length flat - top cab is 45 - 55 mm higher than the height of the floor of the standard cab.

7. The overall vehicle layout structure of the bottom - mounted battery - swapping tractor according to claim 1, characterized in that: Among them, The integrated cooling system shares a radiator with the air - conditioning system of the tractor.

8. The overall vehicle layout structure of the bottom - mounted battery - swapping tractor according to claim 1, characterized in that: Among them, The electric drive axle system is directly connected to the drive shaft of the wheel.

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