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

Abstract

The utility model relates to a range-extended light commercial vehicle chassis arrangement structure and a commercial vehicle, the range-extended 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, the front end of the frame assembly is provided with an electronic hydraulic power-assisted braking system, and the rear end of the frame assembly is provided with a 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; according to the utility model, the chassis arrangement scheme of the extended-range 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 can make the product expansion high, and the product development cost and the dead weight of the whole vehicle are effectively reduced.

Description

Technical Field

[0001] The utility model 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, new energy models are primarily used in light-duty commercial vehicles, both in the light and heavy-duty truck sectors. Pure electric vehicles, however, face disadvantages such as high vehicle costs, relatively high prices, and insufficient range for mid-haul applications. Therefore, in today's automotive industry, with growing environmental awareness and continuous technological advancements, extended-range hybrid vehicles (ERHVs) have gradually attracted consumer attention as a new type of environmentally friendly and energy-efficient vehicle. ERHVs combine the advantages of traditional and electric vehicles, offering the convenience and long-range range of fuel-powered vehicles with the zero emissions and low fuel consumption of electric vehicles. Currently, the light commercial vehicle industry lacks a rationally designed, safe, easily maintained, modular, and serialized ERHV chassis layout solution. To facilitate the promotion of ERHVs in the light commercial vehicle sector, a chassis layout structure and commercial vehicle for ERHVs are proposed. Utility Model Content

[0003] The purpose of the present utility model is to overcome the shortcomings of the existing technology and provide a chassis layout structure and 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, and serialized, and can meet the needs of different upper installations. In addition, the modular design can greatly expand the product and effectively reduce the product development cost and the vehicle's own weight.

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

[0005] A chassis layout structure for an extended-range light commercial vehicle includes a frame assembly, a front axle, and an integrated motor rear axle. The front axle is connected to the frame assembly via a front suspension, and the integrated motor rear axle is connected to the frame assembly via 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 the wheel cylinders provided on the front axle and the integrated motor rear axle via brake oil pipes. The frame assembly includes a left longitudinal beam, a right longitudinal beam, and several cross beams. The left longitudinal beam is connected to the right longitudinal beam via several cross beams. The left and right longitudinal beams are straight-through beams of equal width. The front end cross-sections of the left and right longitudinal beams are high-to-low structures, and the rear end cross-sections of the left and right longitudinal beams are high-to-low, dovetail-shaped structures.

[0006] Preferably, the electronic hydraulic brake assist system rear end is provided with an integrated range extender, the integrated range extender comprises an engine, a generator and a controller, one end of the engine is connected with the fuel tank oil circuit through a carbon tank and connected with the engine intake system air circuit through an air inlet pipe, the other end of the engine is connected with the generator, the upper end of the generator is provided with the controller, the generator is connected with 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 frame assembly right side and front axle rear end are sequentially provided from front to back with an engine intake system, a fast charging socket, a multi-in-one controller, a fuel tank and a carbon tank; the frame assembly left side and front axle rear end are sequentially provided from front to back with a low-voltage fuse box, a low-voltage storage battery, a power battery cooling system and a motor cooling system, the power battery is fixedly connected with the cross beam, the power battery left side is provided with the power battery cooling system and the motor cooling system, and the power battery right side is provided with the fast charging socket, the multi-in-one controller, the fuel tank and the carbon tank.

[0008] Preferably, the cross beam comprises a connecting cross beam and a fixed cross beam, the left and right longitudinal beam abdominal surfaces are connected through the connecting cross beam, the power battery is arranged on the upper end of the fixed cross beam through a damping cushion, and the two ends of the fixed cross beam are connected with the connecting plates arranged on the left and right longitudinal beam outer sides respectively.

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

[0010] Preferably, the frame assembly rear end lower side is provided with a spare tire, and the frame assembly rear end upper side is provided with a hydraulic tail plate.

[0011] Preferably, the frame assembly two sides are further provided with a tool box and a water sprayer mounting place.

[0012] A commercial vehicle comprises the range-extended light commercial vehicle chassis arrangement as any one of the above, and the commercial vehicle is a range-extended light commercial vehicle.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] The utility model has the advantages of compact structure, small size, low self-weight, effective realization of whole vehicle modularization and serialization design, reduction of whole vehicle self-weight, integration of power batteries in the middle of the frame with the frame, provision of a basis for a commercial vehicle CTC structure in the future, and good technical reserve for a solid chassis.

[0015] The multi-in-one controller is additionally provided with a protection device, and the protection device can effectively prevent the high-voltage connector from being damaged under harsh working conditions.

[0016] The electronic hydraulic brake assist system is installed at the front end of the frame assembly, brake performance is greatly improved compared with traditional hydraulic brake performance, the structure is compact, modular and flexible in arrangement, and the electronic mechanical brake system EMB can be arranged at the front end of the frame assembly, so that the solid chassis can be quickly expanded to meet market demand.

[0017] The integrated motor rear axle is arranged at the rear end of the frame assembly, and when the axle distance needs to be increased according to the requirement of the upper assembly, the integrated motor rear axle can be moved rearward without the limitation of the transmission shaft.

[0018] The power battery pack is fixed on the fixed cross beam of the frame assembly through the connecting plate and is located at the middle position of the frame assembly, so that the collision safety is good and the lightweight is beneficial, the occupied space is small and the layout of the extended range vehicle is beneficial, the remaining space on both sides of the frame is large, the remaining chassis components are arranged on both sides of the frame, the maintenance is convenient, the left and right wheel load distribution is beneficial, and the upper assembly is easily maintained. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model;

[0020] Figure 2 It is a top view structural schematic view of the utility model;

[0021] Figure 3 It is a partial structural schematic view of the integrated range extender of the utility model;

[0022] Figure 4 It is an installation structural schematic view of the power battery.

[0023] REFERENCE SIGNS:

[0024] 1, engine intake system; 2, integrated range extender; 3, frame assembly; 4, front axle; 5, front suspension; 6, rear suspension; 7, electronic hydraulic brake assist system; 8, engine cooling system; 9, fast charging socket; 10, all-in-one controller; 11, fuel tank; 12, carbon canister; 13, low-voltage storage 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 cross beam; 24, shock absorbing cushion. DETAILED DESCRIPTION

[0025] As Figures 1-4As 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 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 several cross beams. The left longitudinal beam and the right longitudinal beam are connected by several cross beams. The left longitudinal beam and the right longitudinal beam are straight-through beams of equal width. The front end cross-section of the left longitudinal beam and the right longitudinal beam is a high-to-low structure, and the rear end cross-section of the left longitudinal beam and the right longitudinal beam is a high-to-low dovetail structure.

[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] Engine 19 is a high-thermal-efficiency gasoline engine. Fuel is delivered from fuel tank 11 to carbon canister 12, where it is removed for water vapor and then delivered to engine 19 for operation. A generator assembly is connected to the rear of engine 19. The generator assembly includes generator 20 and controller 21. Since generator 20 and controller 21 are integrated, high-voltage wiring harnesses are eliminated, resulting in a more compact structure and effectively reducing chassis space. Therefore, the power generated by generator 20 can be directly transmitted to controller 21, which then transfers part of the power energy to power battery 16 for replenishment and part to the integrated electric motor rear axle 17 to provide power for the entire 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 sequentially provided from front to back with the engine air intake system 1, the fast charging socket 9, the all-in-one controller 10, the fuel tank 11, and the carbon canister 12; the left side of the frame assembly 3 and the rear end of the front axle 4 are sequentially provided from front to back with the low-voltage fuse box, the low-voltage storage battery 13, the power battery cooling system 14, the motor cooling system 15, the power battery 16 is fixedly connected with the cross beam, the power battery cooling system 14 and the motor cooling system 15 are arranged on the left side of the power battery 16, and the fast charging socket 9, the all-in-one controller 10, the fuel tank 11, and the carbon canister 12 are arranged on the right side of the power battery 16.

[0032] The cross beam includes a connecting cross beam and a fixed cross beam 23, the left and right longitudinal beam webs are connected through the connecting cross beam, the power battery 16 is arranged on the upper end of the fixed cross beam 23 through the shock-absorbing soft pad 24, and the two ends of the fixed cross beam 23 are respectively connected with the connecting plates 22 arranged on the outer sides of the left and right longitudinal beams.

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

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

[0035] Tool boxes and water sprayers are further arranged on the two sides of the frame assembly 3.

[0036] Example 2

[0037] A commercial vehicle includes the range-extended light commercial vehicle chassis arrangement structure according to any one of the above, and the commercial vehicle is a range-extended light commercial vehicle.

Claims

1. A chassis layout structure for an extended-range light commercial vehicle, characterized in that: The invention comprises a vehicle frame assembly (3), a front axle (4) and an integrated motor rear axle (17), wherein the front axle (4) is connected to the vehicle frame assembly (3) via a front suspension (5), and the integrated motor rear axle (17) is connected to the vehicle frame assembly (3) via a rear suspension (6). An electronic hydraulic power-assisted braking system (7) is provided at the front end of the vehicle frame assembly (3), and the electronic hydraulic power-assisted braking system (7) is connected to the wheel cylinders provided on the front axle (4) and the integrated motor rear axle (17) via brake oil pipes. The vehicle frame assembly (3) comprises a left longitudinal beam, a right longitudinal beam and a plurality of cross beams, wherein the left longitudinal beam and the right longitudinal beam are connected via a plurality of cross beams, and the left longitudinal beam and the right longitudinal beam are straight 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 power-assisted braking system (7), and 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). 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). 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 vehicle 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 vehicle 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 cooling system (14) and the motor cooling system (15) are provided on the left side of the power battery (16). The fast charging socket (9), the all-in-one controller (10), the fuel tank (11), and the carbon canister (12) are provided on the right side of the power battery (16).

4. The extended-range light commercial vehicle chassis layout structure according to claim 3, characterized in that: 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 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 the connecting plates (22) provided 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 vehicle frame assembly (3), and a hydraulic tail plate is provided above the rear end of the vehicle 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 a range-extended light commercial vehicle.

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