Extended-range light commercial vehicle chassis arrangement structure and commercial vehicle

Abstract

The invention relates to an extended-range light commercial vehicle chassis arrangement structure and a commercial vehicle, the extended-range light commercial vehicle chassis arrangement structure comprises a frame assembly, a front axle and an integrated motor rear axle, the front axle is connected with the frame assembly through a front suspension, the integrated motor rear axle is connected with the frame assembly through a rear suspension, and the front end of the frame assembly is provided with an electronic hydraulic power-assisted braking system; the electronic hydraulic power-assisted braking system is connected with wheel cylinders arranged on the front axle and the integrated motor rear axle through braking oil pipes, the frame assembly comprises a left longitudinal beam, a right longitudinal beam and a plurality of cross beams, the left longitudinal beam and the right longitudinal beam are connected through the cross beams, and the left longitudinal beam and the right longitudinal beam are equal-width straight-through beams; the chassis arrangement scheme of the range-extending type light commercial vehicle is more reasonable, safer, compact in structure, modularized, serialized and the like, different loading requirements are met, in addition, the modular design enables the product expansion to be high, and the product development cost and the dead weight of the whole vehicle are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of commercial vehicles, and in particular to a chassis layout structure of an extended-range light commercial vehicle and a commercial vehicle. Background Art

[0002] With the vigorous promotion of new energy commercial vehicles, in the field of light and heavy trucks, new energy models are mainly used in light commercial vehicles, among which pure electric vehicles face unfavorable factors such as vehicle cost, high selling price, and driving range that does not meet the needs of mid-distance scenarios. Therefore, in today's automotive industry, with the enhancement of environmental awareness and the continuous advancement of technology, extended-range hybrid vehicles, as a new type of environmentally friendly and energy-saving vehicle, have gradually attracted the attention of consumers. Extended-range hybrid vehicles combine the advantages of traditional vehicles and electric vehicles. They have the convenience and long-distance endurance of fuel vehicles, and the zero emission and low fuel consumption characteristics of electric vehicles. At present, there is no reasonable, safe, easy-to-maintain, modular, and serialized extended-range light commercial vehicle chassis layout solution in the light commercial vehicle industry. In order to adapt to the promotion of the extended-range route in the field of light commercial vehicles, an extended-range light commercial vehicle chassis layout structure and commercial vehicle are proposed. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a chassis layout structure and a commercial vehicle for an extended-range light commercial vehicle, so that the chassis layout scheme of the extended-range light commercial vehicle is more reasonable, safe, compact, modular, serialized, etc., to meet the needs of different upper installations. In addition, the modular design can increase product expansion and effectively reduce product development costs and vehicle weight.

[0004] In order to solve the problems in the above background technology, the present invention is implemented by the following technical solutions:

[0005] A chassis layout structure of an extended-range light commercial vehicle includes a frame assembly, a front axle and an integrated motor rear axle, wherein the front axle is connected to the frame assembly through a front suspension, and the integrated motor rear axle is connected to the frame assembly through a rear suspension. An electronic hydraulic power-assisted braking system is provided at the front end of the frame assembly, and the electronic hydraulic power-assisted braking system is respectively connected to wheel cylinders provided on the front axle and the integrated motor rear axle through brake oil pipes. The frame assembly includes a left longitudinal beam, a right longitudinal beam and a plurality of cross beams, wherein the left longitudinal beam is connected to the right longitudinal beam through a plurality of cross beams, and the left longitudinal beam and the right longitudinal beam are straight-through beams of equal width, and the front end cross-sections of the left longitudinal beam and the right longitudinal beam are high-to-low structures, and the rear end cross-sections of the left longitudinal beam and the right longitudinal beam are high-to-low dovetail structures.

[0006] Preferably, an integrated range extender is provided at the rear end of the electronic hydraulic power-assisted braking system, and the integrated range extender includes an engine, a generator and a controller. One end of the engine is connected to the fuel tank oil circuit through a carbon canister and to the engine intake system air circuit through an intake pipe, and the other end of the engine is connected to the generator. The controller is provided at the upper end of the generator, and the generator is connected to the integrated motor rear axle and the power battery through the controller, and the engine is provided with an engine cooling system.

[0007] Preferably, the right side of the frame assembly and the rear end of the front axle are provided with an engine air intake system, a fast charging socket, an all-in-one controller, a fuel tank, and a carbon canister in sequence from front to back; the left side of the frame assembly and the rear end of the front axle are provided with a low-voltage fuse box, a low-voltage battery, a power battery cooling system, and a motor cooling system in sequence from front to back, the power battery is fixedly connected to the crossbeam, the power battery cooling system and the motor cooling system are provided on the left side of the power battery, and the fast charging socket, an all-in-one controller, a fuel tank, and a carbon canister are provided on the right side of the power battery.

[0008] Preferably, the crossbeam includes a connecting crossbeam and a fixed crossbeam, the ventral surfaces of the left longitudinal beam and the right longitudinal beam are connected by the connecting crossbeam, the power battery is arranged on the upper end of the fixed crossbeam through a shock-absorbing pad, and the two ends of the fixed crossbeam are respectively connected to the connecting plates arranged on the outer sides of the left longitudinal beam and the right longitudinal beam.

[0009] Preferably, the all-in-one controller is provided with a protective device.

[0010] Preferably, a spare tire is provided below the rear end of the frame assembly, and a hydraulic tail plate is provided above the rear end of the frame assembly.

[0011] Preferably, tool boxes and sprinkler installation locations are also provided on both sides of the frame assembly.

[0012] A commercial vehicle comprises any of the above-described extended-range light commercial vehicle chassis layout structures, wherein the commercial vehicle is an extended-range light commercial vehicle.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] The present invention has a compact structure, small size, and low deadweight, and effectively realizes the modularization and serialization design of the whole vehicle, reduces the deadweight of the whole vehicle, and at the same time, the power battery is concentrated in the middle of the frame and integrated with the frame, which can provide a foundation for the CTC structure of future commercial vehicles and make technical reserves for the solid-state chassis;

[0015] The all-in-one controller is equipped with a protective device to effectively prevent the high-voltage connector from being easily damaged under harsh working conditions;

[0016] The front end of the frame assembly is equipped with an electronic hydraulic power brake system, which has significantly improved braking performance compared to traditional hydraulic brakes. It has a compact structure, modularity, and flexible layout. At the same time, the front end of the frame assembly can also be equipped with an electronic mechanical brake system EMB, which can quickly expand the solid chassis to meet market demand;

[0017] An integrated motor rear axle is arranged at the rear end of the frame assembly. When the upper body requires the wheelbase to be increased, the integrated motor rear axle can be moved backward without the restriction of the transmission shaft.

[0018] The power battery pack is fixed to the fixed crossbeam of the frame assembly through a connecting plate and is located in the middle of the frame assembly, which has good collision safety and is conducive to lightweight; it occupies a small space, which is conducive to the layout of extended-range vehicles; there is a large remaining space on both sides of the frame, and the remaining chassis components are arranged on both sides of the frame, which is convenient for maintenance, is conducive to the distribution of left and right wheel loads, and is easy to repair after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0021] Figure 3 It is a partial structural schematic diagram of the integrated range extender of the present invention;

[0022] Figure 4 It is a schematic diagram of the installation structure of the power battery of the present invention.

[0023] Reference numerals:

[0024] 1. Engine air intake system; 2. Integrated range extender; 3. Frame assembly; 4. Front axle; 5. Front suspension; 6. Rear suspension; 7. Electronic hydraulic power brake system; 8. Engine cooling system; 9. Fast charging socket; 10. All-in-one controller; 11. Fuel tank; 12. Carbon canister; 13. Low-voltage battery; 14. Power battery cooling system; 15. Motor cooling system; 16. Power battery; 17. Integrated motor rear axle; 18. Spare tire; 19. Engine; 20. Generator; 21. Controller; 22. Connecting plate; 23. Fixed crossbeam; 24. Shock-absorbing cushion. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 4As shown, a chassis layout structure of an extended-range light commercial vehicle includes a frame assembly 3, a front axle 4 and an integrated motor rear axle 17. The front axle 4 is connected to the frame assembly 3 through a front suspension 5, and the integrated motor rear axle 17 is connected to the frame assembly 3 through a rear suspension 6. An electronic hydraulic power-assisted braking system 7 is provided at the front end of the frame assembly 3. The electronic hydraulic power-assisted braking system 7 is respectively connected to the wheel cylinders provided on the front axle 4 and the integrated motor rear axle 17 through brake oil pipes. The frame assembly 3 includes a left longitudinal beam, a right longitudinal beam and a plurality of cross beams. The left longitudinal beam and the right longitudinal beam are connected through a plurality of cross beams. The left longitudinal beam and the right longitudinal beam are straight-through beams of equal width. The front end cross-sections of the left longitudinal beam and the right longitudinal beam are high-to-low structures, and the rear end cross-sections of the left longitudinal beam and the right longitudinal beam are high-to-low dovetail structures.

[0026] In order to reduce the weight of the left and right longitudinal beams, the front end of the cross-section of the left and right longitudinal beams changes from high to low, the middle part remains unchanged, and the tail part changes from high to low to form a dovetail shape.

[0027] An electronic hydraulic power-assisted braking system 7 is installed at the front end of the frame assembly 3, and the braking performance is greatly improved compared with the traditional hydraulic braking performance. The structure is compact, modular, and flexible in layout. At the same time, an electronic mechanical braking system EMB can also be arranged at the front end of the frame assembly 3, which can quickly expand the solid-state chassis to meet market demand.

[0028] An integrated range extender 2 is provided at the rear end of the electronic hydraulic power-assisted braking system 7. The integrated range extender 2 includes an engine 19, a generator 20 and a controller 21. One end of the engine 19 is connected to the oil circuit of the fuel tank 11 through a carbon canister 12 and to the air circuit of the engine intake system 1 through an intake pipe. The other end of the engine 19 is connected to the generator 20. A controller 21 is provided at the upper end of the generator 20. The generator 20 is connected to the integrated motor rear axle 17 and the power battery 16 through the controller 21. The engine 19 is provided with an engine cooling system 8.

[0029] The engine 19 is a gasoline engine with high thermal efficiency. The fuel tank 11 delivers the fuel to the carbon canister 12, and after removing the water vapor, it is delivered to the engine 19 to work. The generator assembly is connected to the rear of the engine 19. The generator assembly includes a generator 20 and a controller 21. Since the generator 20 and the controller 21 are integrated, the transmission of the high-voltage wire harness is cancelled, the structure is more compact, and the space occupied by the chassis is effectively reduced. Therefore, the electricity generated by the generator 20 can be directly transmitted to the controller 21, and the controller 21 transmits part of the electric energy to the power battery 16 for energy replenishment, and transmits part of the electric energy to the integrated motor rear axle 17 to provide power for the whole vehicle;

[0030] In addition, when the power battery 16 has enough power, the integrated range extender 2 stops working, and the power battery 16 transfers the stored electric energy to the integrated motor rear axle 17 through the controller 21 to provide power for the entire vehicle.

[0031] The right side of the frame assembly 3 and the rear end of the front axle 4 are provided with an engine air intake system 1, a fast charging socket 9, an all-in-one controller 10, a fuel tank 11, and a carbon canister 12 in sequence from front to back; the left side of the frame assembly 3 and the rear end of the front axle 4 are provided with a low-voltage fuse box, a low-voltage battery 13, a power battery cooling system 14, and a motor cooling system 15 in sequence from front to back, the power battery 16 is fixedly connected to the crossbeam, the power battery 16 is provided with a power battery cooling system 14 and a motor cooling system 15 on the left side, and the power battery 16 is provided with a fast charging socket 9, an all-in-one controller 10, a fuel tank 11, and a carbon canister 12 on the right side.

[0032] The crossbeam includes a connecting crossbeam and a fixed crossbeam 23. The ventral surfaces of the left longitudinal beam and the right longitudinal beam are connected by the connecting crossbeam. The power battery 16 is arranged on the upper end of the fixed crossbeam 23 through a shock-absorbing cushion 24. The two ends of the fixed crossbeam 23 are respectively connected to the connecting plates 22 arranged on the outer sides of the left longitudinal beam and the right longitudinal beam.

[0033] The all-in-one controller 10 is provided with a protective device.

[0034] A spare tire 18 is provided below the rear end of the frame assembly 3 , and a hydraulic tail plate is provided above the rear end of the frame assembly 3 .

[0035] Tool boxes and sprinkler installation locations are also provided on both sides of the frame assembly 3.

[0036] Example 2

[0037] A commercial vehicle comprises any of the above-mentioned extended-range light commercial vehicle chassis layout structures, wherein the commercial vehicle is an extended-range light commercial vehicle.

Claims

1. A chassis layout structure for an extended-range light commercial vehicle, characterized in that: The invention comprises a frame assembly (3), a front axle (4) and an integrated motor rear axle (17), wherein the front axle (4) is connected to the frame assembly (3) via a front suspension (5), and the integrated motor rear axle (17) is connected to the frame assembly (3) via a rear suspension (6). An electronic hydraulic booster brake system (7) is provided at the front end of the frame assembly (3), and the electronic hydraulic booster brake system (7) is respectively connected to wheel cylinders provided on the front axle (4) and the integrated motor rear axle (17) via brake oil pipes. The frame assembly (3) comprises a left longitudinal beam, a right longitudinal beam and a plurality of cross beams, wherein the left longitudinal beam is connected to the right longitudinal beam via a plurality of cross beams, and the left longitudinal beam and the right longitudinal beam are straight through beams of equal width, and the front end cross sections of the left longitudinal beam and the right longitudinal beam are high-to-low structures, and the rear end cross sections of the left longitudinal beam and the right longitudinal beam are high-to-low dovetail structures.

2. The extended-range light commercial vehicle chassis layout structure according to claim 1, characterized in that: An integrated range extender (2) is provided at the rear end of the electronic hydraulic booster brake system (7), and the integrated range extender (2) comprises an engine (19), a generator (20) and a controller (21); one end of the engine (19) is connected to the oil circuit of the fuel tank (11) through a carbon canister (12) and to the air circuit of the engine intake system (1) through an intake pipe; the other end of the engine (19) is connected to the generator (20); the controller (21) is provided at the upper end of the generator (20); the generator (20) is connected to the integrated motor rear axle (17) and the power battery (16) through the controller (21); and the engine (19) is provided with an engine cooling system (8).

3. The extended-range light commercial vehicle chassis layout structure according to claim 2, characterized in that: The right side of the frame assembly (3) and the rear end of the front axle (4) are provided with an engine air intake system (1), a fast charging socket (9), an all-in-one controller (10), a fuel tank (11), and a carbon canister (12) in sequence from front to back; the left side of the frame assembly (3) and the rear end of the front axle (4) are provided with a low-voltage fuse box, a low-voltage battery (13), a power battery cooling system (14), and a motor cooling system (15) in sequence from front to back; the power battery (16) is fixedly connected to the crossbeam; the left side of the power battery (16) is provided with the power battery cooling system (14) and the motor cooling system (15); the right side of the power battery (16) is provided with a fast charging socket (9), an all-in-one controller (10), a fuel tank (11), and a carbon canister (12).

4. The extended-range light commercial vehicle chassis layout structure according to claim 3, characterized in that: The crossbeam comprises a connecting crossbeam and a fixed crossbeam (23), the ventral surfaces of the left longitudinal beam and the right longitudinal beam are connected via the connecting crossbeam, the power battery (16) is arranged on the upper end of the fixed crossbeam (23) via a shock-absorbing cushion (24), and the two ends of the fixed crossbeam (23) are respectively connected to connecting plates (22) arranged on the outer sides of the left longitudinal beam and the right longitudinal beam.

5. The extended-range light commercial vehicle chassis layout structure according to claim 3, characterized in that: The all-in-one controller (10) is provided with a protective device.

6. The extended-range light commercial vehicle chassis layout structure according to claim 1, characterized in that: A spare tire (18) is provided below the rear end of the frame assembly (3), and a hydraulic tail plate is provided above the rear end of the frame assembly (3).

7. The extended-range light commercial vehicle chassis layout structure according to claim 6, characterized in that: Tool boxes and sprinkler installation locations are also provided on both sides of the vehicle frame assembly (3).

8. A commercial vehicle, comprising the extended-range light commercial vehicle chassis arrangement structure according to any one of claims 1 to 7, characterized in that: The commercial vehicle is an extended-range light commercial vehicle.

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