New energy traction vehicle whole vehicle structure

Abstract

The application discloses a new energy tractor whole vehicle structure. The new energy tractor whole vehicle structure comprises a cab, a chassis frame, a radiator, an integrated temperature control system, an air reservoir, a multi-in-one domain control system, integrated accessories, a power battery and a drive axle. The chassis frame is partially located below the cab. The radiator is located at the front section of the chassis frame. The integrated temperature control system and the air reservoir are stacked and located at the rear of the radiator. The multi-in-one domain control system and the integrated accessories are stacked and located at the rear of the integrated temperature control system. The power battery is located at the rear of the multi-in-one domain control system. The drive axle is located at the rear of the power battery. The application effectively utilizes the bottom space, reduces the cab coordinates and improves the whole vehicle handling stability performance by integrating various assembly systems below the cab. The vehicle body wheelbase is reduced by optimizing the arrangement, the whole vehicle arrangement structure is simplified, the whole vehicle maneuvering performance is improved, the whole vehicle power consumption is reduced, and the carrying efficiency and economic benefits are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of commercial vehicle overall structure, and particularly relates to a new energy tractor overall structure. BACKGROUND

[0002] With the maturity of new energy commercial vehicles in the market application and the maturity of electric technology, the application range of heavy electric tractors is gradually expanding to longer-range markets. Recently, there have been more medium and long distance electric tractors, from traditional car companies and new force car companies. At present, the common medium and long distance electric tractors mainly have the following forms: one is to increase the rear battery and bottom battery on the basis of the traditional oil-to-electric rear-mounted electric vehicle to improve the endurance; the other is to re-match the chassis structure, lengthen the wheelbase and appropriately reduce the wind resistance coefficient of the cab, and other structures are not much different from the current ones; the third is to reduce the wind resistance coefficient of the cab, arrange various accessories below the cab, use mature power batteries for the chassis, and add electric drive axle and split motor controller and shift controller.

[0003] For the existing medium and long distance pure electric tractor overall structure, although the maturity of each assembly is high and the development cycle is short, the disadvantages are also obvious: 1. The wind resistance of the flat head of the cab is not much improved compared with the traditional cab, and the arrangement below is relatively scattered, occupying a large space at the bottom, resulting in a relatively high cab coordinate, affecting the overall cab operation stability; 2. The existing battery pack (PACK) occupies a large space in the transverse (X-direction) dimension, resulting in a longer overall wheelbase and reduced maneuverability; 3. After lengthening the overall wheelbase, the existing motor and few-gear box controllers are used, resulting in a longer three-phase line from the cab to the rear axle, and the low-voltage electrical appliances are easily subject to electromagnetic interference.

[0004] In summary, the existing tractor overall structure has the technical problems of long wheelbase, reduced maneuverability and low driving efficiency. SUMMARY

[0005] The present application aims to overcome the above technical deficiencies and provides a new energy tractor overall structure to solve the technical problems of long wheelbase, reduced maneuverability and low driving efficiency in the prior art.

[0006] To achieve the above technical purpose, the present application adopts the following technical scheme:

[0007] The present application provides a new energy tractor overall structure, which comprises a cab, a chassis frame, a radiator, an integrated temperature control system, an air reservoir, a multi-in-one domain control system, integrated accessories, a power battery and a drive axle:

[0008] The cab;

[0009] The chassis frame is partially located below the cab.

[0010] a radiator located at a front section of the chassis frame;

[0011] an integrated temperature control system and an air tank, which are stacked and located at a rear of the radiator;

[0012] a multi-in-one domain control system and an integrated accessory, which are stacked and located at a rear of the integrated temperature control system;

[0013] a power battery located at a rear of the multi-in-one domain control system;

[0014] a drive axle located at a rear of the power battery.

[0015] In some embodiments of the present application, the multi-in-one domain control system comprises one or more of a vehicle control system, a power battery distribution system, an accessory distribution system, an accessory voltage output system, and a low-voltage output system.

[0016] In some embodiments of the present application, the integrated accessory comprises one or more of an electric air compressor and a steering pump.

[0017] In some embodiments of the present application, a low-voltage storage battery and a positive temperature coefficient heater are further included, and the low-voltage storage battery and the positive temperature coefficient heater are respectively located at two sides of the multi-in-one domain control system.

[0018] In some embodiments of the present application, an independent suspension, a front axle, and a rear axle are further included, the front axle and the rear axle are connected to the chassis frame, a door of the cab is located between the front axle and the rear axle, and the independent suspension is connected to the front axle.

[0019] In some embodiments of the present application, the power battery is located between the front axle and the rear axle.

[0020] In some embodiments of the present application, the power battery comprises an integrated battery pack or a plurality of split battery packs, and the plurality of split battery packs are arranged longitudinally in sequence from front to rear or transversely in sequence from left to right.

[0021] In some embodiments of the present application, the drive axle is integrated with a motor, a motor controller, and a gear shift controller, and the drive axle comprises a dual rear axle or a single rear axle.

[0022] In some embodiments of the present application, a front cover and a bumper are further included, the front cover and the bumper are located in front of the cab and are integrally designed to form a whole cover, and the whole cover is streamlined.

[0023] In some embodiments of the present application, a pin shaft and a shock absorbing cushion are further included, the connecting support of the cab is fixedly connected with the mounting bracket on the chassis frame through the pin shaft, and the shock absorbing cushion is arranged in the mounting bracket of the chassis frame.

[0024] Compared with the prior art, the technical scheme provided by the present application has the beneficial technical effects including:

[0025] The embodiment of the present application effectively utilizes the bottom space by integrating various assembly systems below the cab, reduces the cab coordinates, and improves the vehicle handling and stability performance. By optimizing the arrangement mode, the vehicle body wheelbase is reduced, the vehicle arrangement structure is effectively simplified, and the vehicle maneuverability is improved. Thus, the wind resistance and the cab height are reduced, the vehicle power consumption is greatly reduced, the vehicle carrying efficiency is improved, energy saving and environmental protection are achieved, and the economic benefit of the vehicle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the present application, the drawings needed in the embodiments will be briefly introduced as follows:

[0027] Figure 1 is a structural schematic diagram of a new energy tractor whole vehicle structure provided by the embodiment of the present application;

[0028] Figure 2 is a top view of a new energy tractor whole vehicle structure provided by the embodiment of the present application;

[0029] Figure 3 is a structural schematic diagram of a power battery provided by the embodiment of the present application;

[0030] Figure 4 is a structural schematic diagram of an integrated mask provided by the embodiment of the present application;

[0031] Figure 5 is a structural schematic diagram of a cab provided by the embodiment of the present application.

[0032] Reference signs:

[0033] Cab 1, radiator 2, integrated temperature control system 3, air reservoir 4, integrated accessory 5, multi-in-one domain control system 6, low-voltage storage battery 7, positive temperature coefficient heater 8, independent suspension 9, power battery 10, electric drive axle 11 / 12, gear shift controller 13, gear shift mechanism 14, door 15;

[0034] Front-middle-rear type 16, left-middle-right type 17, integrated type 18;

[0035] Left side wall 19, integrated mask 20, right side wall 21;

[0036] The connecting support 22 of the cab, the shock absorbing cushion 23, the mounting support 24 of the chassis support, and the chassis frame 25. DETAILED DESCRIPTION

[0037] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0038] Those skilled in the art can understand that, in the present specification, the word "comprising" is an open-ended expression, which means that the features described exist, but other features are not excluded. The terms "upper", "lower", "left", "right", etc. are based on the example directions shown in the drawings. The features with "first" and "second" are implicitly included one or more of the features. Singular forms are also used for plural forms. The meaning of "a plurality of" is two or more. The terms "mounting", "connected", "connected" can be fixedly connected, or detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. In addition, "connection" can include wireless connection.

[0039] The purpose of the present application is to overcome the above technical deficiencies, and to provide a new energy traction vehicle whole vehicle structure, which solves the technical problems of long wheelbase, reduced maneuverability and low driving efficiency in the prior art.

[0040] To achieve the above technical purpose, the present application adopts the following technical scheme:

[0041] The present application provides a new energy traction vehicle whole vehicle structure, as shown in Figure 1 and Figure 2 , wherein Figure 1 is a structural schematic diagram of a new energy traction vehicle whole vehicle structure provided by an embodiment of the present application; Figure 2 is a top view of a new energy traction vehicle whole vehicle structure provided by an embodiment of the present application.

[0042] A new energy traction vehicle whole vehicle structure, comprising a cab 1, a chassis frame 25, a radiator 2, an integrated temperature control system 3, an air reservoir 4, a multi-in-one domain control system 6, an integrated accessory 5, a power battery 10 and a drive axle:

[0043] The cab 1;

[0044] The chassis frame 25 is partially located below the cab 1;

[0045] The radiator 2 is located at the front of the chassis frame 25;

[0046] The integrated temperature control system 3 and the gas cylinder 4 are stacked and located at the rear of the radiator 2.

[0047] The all-in-one domain control system 6 and the integrated accessory 5 are stacked and located at the rear of the integrated temperature control system 3.

[0048] The power battery 10 is located at the rear of the all-in-one domain control system 6.

[0049] The drive axle is located at the rear of the power battery 10.

[0050] The embodiment of the application is applicable to a new energy low wind resistance pure electric traction vehicle. The low wind resistance cab 1 is designed in a whole body with a bumper, the wind resistance system of the whole vehicle is greatly reduced, the power consumption of the whole vehicle is reduced, and the cruising range of the whole vehicle is greatly improved under the condition of the same power. The integrated temperature control system 3 and the all-in-one domain control system 6 are used below the cab 1, the arrangement space below is greatly optimized, the floor height of the low wind resistance cab 1 can be reduced, the overall handling performance is improved, and the internal space of the cab 1 is ensured. The integrated development of the power battery 10 and the application of the front independent suspension 9 effectively shorten the wheelbase of the whole vehicle and improve the maneuverability of the whole vehicle. The central integrated electric drive axle 11 / 12, the high-integration motor and the gear shifting mechanism 14, the motor controller and the gear shifting controller 13 reduce the use of a large number of high-voltage lines, reduce the development cost of the whole vehicle, and also reduce the electromagnetic interference of the high-voltage three-phase line on the low-voltage electrical system of the whole vehicle, which ensures the stable and safe long-distance driving of the vehicle, saves energy and protects the environment, improves the working efficiency and economic benefit of the whole vehicle.

[0051] In some embodiments of the application, the all-in-one domain control system 6 includes one or more of the whole vehicle control system, the power battery 10 power distribution system, the accessory power distribution system, the accessory voltage output system and the low-voltage power output system.

[0052] In this embodiment, to match the low wind resistance cab 1, the size of the radiator 2 is reduced in height and widened, the gas cylinder 4 is arranged below the integrated temperature control system 3, the all-in-one domain control system 6 is arranged at the rear of the integrated temperature control system 3, and the all-in-one domain control system 6 includes but is not limited to the whole vehicle control, the power battery 10 power distribution, the accessory power distribution, the accessory voltage output and the low-voltage power output.

[0053] The all-in-one domain control system 6 integrates the functions of multiple electronic control units into one electronic control unit. By integrating multiple functions, the number of internal electronic systems of the vehicle is reduced, the complexity of electronic components is reduced, and the system is easier to manage and maintain. Reducing the number of electronic components means reducing the number of wiring harnesses and connectors, thereby reducing weight and cost. More efficient data exchange and control can be achieved because all functions are integrated into one unit, reducing signal transmission time and energy loss. Integrating multiple functions means fewer electronic components, which can reduce the occupation of internal space of the vehicle. Reducing the number of electronic components and wiring can reduce the risk of failure because there are fewer failure points and it is easier to detect and repair.

[0054] In some embodiments of the present application, the integrated accessories 5 include one or more of an electric air compressor and a steering pump.

[0055] In this embodiment, the integrated accessories 5, including but not limited to an electric air compressor and a steering pump, are arranged below the all-in-one domain control system 6. This embodiment effectively utilizes the space in the height direction of the chassis frame 25 through a stacked arrangement, can shorten the wheelbase of the vehicle body, and avoid the influence of an excessively long wheelbase on the handling of the vehicle. By integrating multiple accessories, the number of internal mechanical systems of the vehicle can be reduced, thereby simplifying the overall structure. The integrated accessories 5 reduce the number of required parts and materials, which helps to reduce the overall weight of the vehicle. Due to the reduction in the number of accessories, the number of wiring harnesses and connectors is also reduced, which helps to reduce the complexity and cost of the vehicle. The integrated accessories 5 can more effectively utilize the internal space of the vehicle, reducing interference and occupation between components.

[0056] In some embodiments of the present application, a low-voltage storage battery 7 and a positive temperature coefficient heater 8 are also included, which are respectively located on both sides of the all-in-one domain control system 6.

[0057] Optionally, the low-voltage storage battery 7 is arranged at the right rear lower part of the cab 1, and the positive temperature coefficient heater 8 (PTC) is arranged at the left rear lower part of the cab 1. Arranging accessories such as the low-voltage storage battery 7 and the PTC at the right rear lower part and the left rear lower part of the cab 1 can make full use of the internal space of the vehicle and avoid occupying the internal space of the cab 1. Such an arrangement can optimize the electronic architecture and wiring layout of the vehicle, reduce the number of wiring harnesses and connectors, and improve system efficiency.

[0058] In some embodiments of the present application, an independent suspension 9, a front axle, and a rear axle are also included, the front axle and the rear axle are connected to the chassis frame 25, the doors 15 of the cab 1 are located between the front axle and the rear axle, and the independent suspension 9 is connected to the front axle.

[0059] As Figure 3 shown, Figure 3 is a structural schematic diagram of a power battery 10 provided by an embodiment of the present application.

[0060] In some embodiments of the present application, the power battery 10 is located between the front axle and the rear axle.

[0061] In some embodiments of the present application, the power battery 10 includes an integrated battery pack or a plurality of split battery packs, and the plurality of split battery packs are arranged longitudinally in sequence from front to back or transversely in sequence from left to right.

[0062] In the present embodiment, according to different vehicle design requirements and application scenarios, the power battery 10 can adopt an integrated 18PACK scheme or a split PACK scheme. Through split or integrated design, the battery module arrangement space can be effectively improved, and the energy density of the power battery 10 can be improved.

[0063] When the split PACK scheme is adopted, the power battery 10 can adopt a PACK arrangement scheme in which three PACKs are arranged in front, middle and rear in sequence. This scheme is usually applicable to small and medium-sized electric vehicles. The battery modules are arranged in front and rear, so that the front and rear spaces of the vehicle can be fully utilized, and the space utilization rate is improved. By arranging three same PACKs in front and rear positions, the battery modules can be arranged symmetrically, which is beneficial to the balance and control of the vehicle.

[0064] The power battery 10 can also adopt a PACK arrangement scheme in which three PACKs are arranged in left, middle and right in sequence. This scheme is applicable to large electric vehicles. The battery modules are arranged in left and right, so that the internal space of the vehicle can be fully utilized, and the space utilization rate is improved. By arranging the battery modules in left, middle and right, the battery modules can be uniformly distributed, which is beneficial to the balance and control of the vehicle.

[0065] The integrated 18PACK scheme can realize uniform distribution of the battery modules, which is beneficial to the balance and control of the vehicle. The integrated 18PACK scheme can reduce the connection lines between the battery modules, reduce the complexity of the wire harness, and simplify the vehicle electrical system.

[0066] In some embodiments of the present application, the drive axle is integrated with a motor, a motor controller and a shift controller 13, and the drive axle includes a double rear axle or a single rear axle.

[0067] In the present embodiment, the new energy low-drag pure electric traction vehicle drive axle can be a 6x4 double rear axle or a 4x2 single rear axle.

[0068] When the drive axle adopts a 6x4 scheme, it means that the vehicle has a total of 6 wheels, of which 4 wheels provide power as drive wheels. The vehicle has two rear axles, each with two wheels. Both rear axles are drive axles, i.e. the four wheels on the two rear axles can provide power. This scheme is commonly used in heavy trucks and tractors, which can provide greater load capacity and better traction.

[0069] When the drive axle adopts a 4x2 scheme, it means that the vehicle has a total of 4 wheels, of which 2 wheels provide power as drive wheels. The vehicle has only one rear axle, which has two wheels. Only this rear axle is a drive axle, and the front axle does not provide power. This scheme is commonly used in light and medium trucks, as well as some cars and SUVs. The vehicle is relatively light and has higher fuel efficiency, but is not as good as the 6x4 configuration in terms of traction and load capacity.

[0070] The drive axle adopts a central integrated electric drive axle 11 / 12 that integrates the motor, motor controller, and shift controller 13. By integrating the motor, motor controller, and shift controller 13 in one electric drive axle 11 / 12, the electric drive axle 11 / 12 also integrates the motor control unit (MCU) and the transmission control unit (TCU). This can reduce the number of internal electronic systems of the vehicle and simplify the layout and wiring of the electrical system. Specifically, the three-phase line is eliminated, eliminating the previous three-phase line interference on the vehicle electromagnetic (EMC), improving the electrical safety and reliability of the vehicle.

[0071] As shown in Figure 4 and Figure 5 , the structure of the overall mask 20 provided by the embodiments of the present application is shown in Figure 4 , and the structure of the cab 1 provided by the embodiments of the present application is shown in Figure 5

[0072] In some embodiments of the present application, a front mask and a bumper are also included, and the front mask and the bumper are located in front of the cab 1 and are integrally designed to form an overall mask 20, which is streamlined.

[0073] In the present embodiment, the design scheme of the cab 1 adopts an integrated design of the vehicle body and the bumper, which can reduce the complex shape and gap of the front part of the vehicle, thereby reducing the wind resistance. This design usually includes streamlined body lines and smooth front styling. The wind resistance system is controlled within 0.3. The overall mask 20 is formed in the middle of the front mask and the bumper, which is opened and closed by turning up and down; the left side wall 19 and the right side wall 21 connect the overall mask 20 of the bumper, which is opened and closed by turning left and right.

[0074] ​The front overhang value of the whole vehicle is reduced, the front overhang value refers to the minimum distance from the center line of the front axle to the front bumper. Reducing the front overhang value can reduce the air resistance of the front part of the vehicle, because the smaller front overhang value can reduce the contact area of the front part of the vehicle with the air.

[0075] The vehicle door 15 of the cab 1 is placed behind the front axle, and the vehicle steps are controlled within the range of 3 steps. The overall height of the cab 1 is reduced, which can reduce the air resistance of the front part of the vehicle, because the position behind the front axle usually has better aerodynamic characteristics. The smaller number of steps can reduce the complex shape and gap of the front part of the vehicle. The lower height of the cab 1 can reduce the contact area of the front part of the vehicle with the air.

[0076] The cab 1 suspension structure is simplified by adopting the non-inversion scheme, which means that the cab 1 does not need to be inverted during design, which can reduce the air resistance of the front part of the vehicle, because the inversion structure will increase the complex shape and gap of the front part of the vehicle. By simplifying the cab 1 suspension structure, the air resistance of the front part of the vehicle can be reduced, because the simpler suspension structure can reduce the complex shape and gap of the front part of the vehicle.

[0077] While reducing the wind resistance, it is also necessary to ensure that the interior space of the cab 1 is wide enough to meet the needs of the driver and passengers. In addition, it is also necessary to ensure that the overall handling performance of the vehicle is excellent, so as to improve the driving comfort and safety.

[0078] In some embodiments of the present application, a pin shaft and a shock absorbing soft pad 23 are further included, the connecting support 22 of the cab 1 is fixedly connected with the mounting bracket 24 on the chassis frame 25 through the pin shaft, and the shock absorbing soft pad 23 is arranged in the mounting bracket 24 of the chassis frame 25.

[0079] In the embodiment, the cab 1 and the chassis are fixedly connected in the form of a structure, the cab 1 is fixed on the chassis without inversion, the connecting support 22 of the cab 1 is fixedly connected with the mounting bracket 24 on the chassis frame 25 through a pin shaft, a shock absorbing rubber soft pad is arranged in the mounting bracket 24, and the rigidity of the shock absorbing rubber soft pad can be set according to the whole vehicle smoothness damping index. Meanwhile, a maintenance position is opened on the pure flat floor.

[0080] Compared with the prior art, the technical scheme provided by the present application has the beneficial technical effects including:

[0081] The cab 1 is height-integrated with various assembly systems below, the bottom space is effectively utilized, the cab 1 coordinates are reduced, and the handling performance of the whole vehicle is improved. The vehicle body wheelbase is reduced by optimizing the arrangement mode, the whole vehicle arrangement structure is effectively simplified, and the vehicle maneuvering performance is improved. Therefore, the wind resistance is reduced, and the height of the cab 1 is also reduced, the whole vehicle power consumption is greatly reduced, the whole vehicle carrying efficiency is improved, energy is saved, the environment is protected, and the economic benefit of the whole vehicle is improved.

[0082] Those skilled in the art can understand that the steps, measures, schemes in the various operations, methods, processes discussed in the present application can be alternated, changed, rearranged, decomposed, combined or deleted.

[0083] The specific embodiments of the present application described above do not constitute a limitation of the protection scope of the present application. Any various other corresponding changes and modifications made according to the technical concept of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A new energy tractor vehicle structure, characterized in that, The utility model relates to a vehicle, comprising: a driver's cabin; a chassis frame, part of which is located below the driver's cabin; a radiator, located at the front of the chassis frame; an integrated temperature control system and an air cylinder, which are stacked and located behind the radiator; a multi-in-one domain control system and integrated accessories, which are stacked and located behind the integrated temperature control system; a power battery, located behind the multi-in-one domain control system; a drive axle, located behind the power battery; wherein the drive axle is integrated with a motor, a motor controller and a gear shift controller, and the drive axle comprises a double rear axle or a single rear axle; the utility model further comprises a pin shaft and a shock-absorbing cushion, a connecting support of the driver's cabin is fixedly connected with a mounting bracket on the chassis frame through the pin shaft, and the shock-absorbing cushion is arranged in the mounting bracket of the chassis frame.

2. The new energy towing vehicle overall structure according to claim 1, characterized in that, The multi-in-one domain control system comprises one or more of a vehicle control system, a power battery distribution system, an accessory distribution system, an accessory voltage output system and a low-voltage output system.

3. The new energy towing vehicle overall structure according to claim 1, characterized in that, The integrated accessories comprise one or more of an electric air compressor and a steering pump.

4. The new energy towing vehicle overall structure according to claim 1, characterized in that, The utility model further comprises a low-voltage storage battery and a positive temperature coefficient heater, which are respectively located on the two sides of the multi-in-one domain control system.

5. The new energy towing vehicle overall structure according to claim 1, characterized in that, The utility model further comprises independent suspensions, a front axle and a rear axle, the front axle and the rear axle are connected with the chassis frame, the doors of the driver's cabin are located between the front axle and the rear axle, and the independent suspensions are connected with the front axle.

6. The new energy towing vehicle overall structure according to claim 5, characterized in that, The power battery is located between the front axle and the rear axle.

7. The new energy towing vehicle overall structure according to claim 6, characterized in that, The power battery comprises an integrated battery pack or a plurality of split battery packs, and the plurality of split battery packs are arranged longitudinally from front to back or transversely from left to right.

8. The new energy towing vehicle overall structure according to claim 1, characterized in that, The utility model further comprises a front cover and a bumper, the front cover and the bumper are located in front of the driver's cabin and are integrally designed to form a whole cover, and the whole cover is streamlined.

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