New energy four-wheel drive power system and tractor

Abstract

The utility model relates to a new energy four-wheel drive power system and a tractor, the system comprises a power battery module, a drive module, a drive shaft assembly, a front drive axle, a rear drive axle, a front power input shaft, a rear power input shaft and a clutch, the power battery module is electrically connected with the drive module, and the drive module is connected with the drive shaft assembly; one end of the rear power input shaft is connected with the driving shaft assembly, the other end of the rear power input shaft is connected with the rear driving axle, and the rear driving axle is connected with rear wheels of the new energy vehicle; the driving shaft assembly is connected with one end of a front power input shaft through a clutch, the other end of the front power input shaft is connected with a front driving axle, and the front driving axle is connected with front wheels of the new energy vehicle. According to the new energy four-wheel drive system, the situation that the front drive axle is driven to obtain power is controlled through the closing and opening states of the clutch, so that the new energy four-wheel drive system can achieve the four-wheel drive function of a new energy vehicle, the structure is simple, the whole vehicle weight of the four-wheel drive vehicle is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of four-wheel drive, in particular to a new energy four-wheel drive power system and a tractor. Background Art

[0002] Since the four wheels of four-wheel drive vehicles such as four-wheel drive tractors can be driven at the same time, the driving efficiency and reliability of tractors and other vehicles can be improved, and they have stronger handling stability and traction than two-wheel drive vehicles, making four-wheel drive tractors and other four-wheel drive vehicles currently the mainstream of the market.

[0003] Traditional fuel-powered four-wheel-drive tractors include an engine, a gearbox, a transfer case, and a four-wheel-drive shaft. The four-wheel-drive function of a fuel-powered four-wheel-drive tractor is based on rear-wheel drive. The transfer case arranged at the bottom of the gearbox outputs the engine power to the front axle through the four-wheel-drive shaft to achieve front wheel drive. As an important component in the four-wheel-drive system, the transfer case has a relatively high manufacturing cost. The four-wheel-drive system using the transfer case has a complex structure, and the cost of maintenance and repair increases accordingly, and the weight of the four-wheel-drive vehicle will be increased. Utility Model Content

[0004] In order to reduce the cost of the whole vehicle and reduce the weight of the whole vehicle of the four-wheel drive vehicle, the present application provides a new energy four-wheel drive power system and a tractor.

[0005] In a first aspect, the present application provides a new energy four-wheel drive power system, including a power battery module, a drive module, a drive shaft assembly, a front drive axle, a rear drive axle, a front power input shaft, a rear power input shaft and a clutch, wherein the power battery module is electrically connected to the drive module, and the drive module is connected to the drive shaft assembly;

[0006] One end of the rear power input shaft is connected to the drive shaft assembly, the other end of the rear power input shaft is connected to the rear drive axle, and the rear drive axle is connected to the rear wheels of the new energy vehicle;

[0007] The drive shaft assembly is connected to one end of the front power input shaft through the clutch, the other end of the front power input shaft is connected to the front drive axle, and the front drive axle is connected to the front wheels of the new energy vehicle.

[0008] The beneficial effects of the utility model are as follows: the drive shaft assembly transmits power to the rear power input shaft, so that the rear drive axle can obtain power, and through the engagement and disengagement of the clutch, controls the power acquisition of the front drive axle, so that the new energy four-wheel drive power system does not need to be equipped with a transfer case to realize the four-wheel drive function of the new energy vehicle, has a simple structure, reduces the overall weight of the four-wheel drive vehicle, and reduces costs.

[0009] Furthermore, the clutch is an electronically controlled clutch.

[0010] The beneficial effect of adopting the above further solution is that the convenience of switching between the engaged and disengaged states of the clutch is improved.

[0011] Furthermore, the system also includes a control module, which is electrically connected to the drive module and the electronically controlled clutch.

[0012] The beneficial effect of adopting the above further solution is that the electronically controlled clutch is controlled by the control module, thereby improving the automation level of the system.

[0013] Furthermore, the drive module includes a drive motor and a gearbox, the drive shaft assembly includes a motor rear output shaft and a motor front output shaft, the motor rear output shaft and the motor front output shaft are respectively connected to the drive motor, the gearbox includes a speed change input shaft and a speed change output shaft, the end of the motor rear output shaft away from the drive motor is connected to the speed change input shaft, the speed change output shaft is connected to the rear power input shaft, and the end of the motor front output shaft away from the drive motor is connected to the clutch.

[0014] The beneficial effect of adopting the above further solution is that the motor rear output shaft and the motor front output shaft are directly connected to the drive motor, which reduces the energy loss in the power transmission process, thereby improving the power transmission efficiency of the entire four-wheel drive system. The motor rear output shaft is connected to the speed change input shaft, and through the speed change function of the gearbox, the vehicle speed and torque output can be adjusted as needed, thereby improving the stability and reliability of the vehicle.

[0015] Furthermore, the control module includes a vehicle controller and a first controller, the first controller is electrically connected to the drive motor, the vehicle controller is electrically connected to the first controller and the electronically controlled clutch respectively, and the first controller is also electrically connected to the power battery module.

[0016] The beneficial effect of adopting the above further solution is that the first controller is electrically connected to the drive motor, and can control the operating state of the drive motor to achieve more optimized power output. The vehicle controller can coordinate and control the operation of the drive motor and the electronically controlled clutch to ensure the efficient operation of the new energy four-wheel drive power system.

[0017] Furthermore, the vehicle controller is electrically connected to a battery management module, and the battery management module is electrically connected to the power battery module.

[0018] The beneficial effect of adopting the above further solution is that the battery management module is responsible for monitoring, managing and protecting the power battery module, ensuring the safe, efficient and long-lasting use of the batteries in the power battery module.

[0019] Furthermore, the driving motor is a motor with outputs at both ends.

[0020] The beneficial effect of adopting the above further scheme is that the drive motors with outputs at both ends enable the same drive motor to simultaneously drive the front and rear drive axles of the new energy vehicle, reducing the number of motors in the new energy four-wheel drive power system, simplifying the structure of the new energy four-wheel drive power system, thereby reducing the complexity and weight of the new energy four-wheel drive power system and making the structure more compact.

[0021] Furthermore, the motor front output shaft, the front power input shaft and the drive motor are coaxially arranged.

[0022] The beneficial effect of adopting the above further solution is that the front output shaft of the motor and the front power input shaft are arranged coaxially with the drive motor, which improves the space utilization rate and makes the overall layout of the new energy vehicle easier.

[0023] Furthermore, the new energy vehicle includes supporting machinery, and the system also includes a power output motor for driving the supporting machinery to work, the power output motor is electrically connected to a second controller, and the first controller and the second controller are integrated into an integrated controller.

[0024] The beneficial effect of adopting the above further solution is: integrating the first controller and the second controller into an integrated controller, reducing the size of the controller, reducing the complexity and cost of the new energy four-wheel drive power system, and achieving a high degree of integration of the new energy four-wheel drive power system.

[0025] In a second aspect, the present application provides a new energy tractor using the new energy four-wheel drive power system described in any one of the first aspects, comprising the new energy four-wheel drive power system, front wheels and rear wheels, the rear drive axle in the new energy four-wheel drive power system being connected to the rear wheels, and the front drive axle in the new energy four-wheel drive power system being connected to the front wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural block diagram of the new energy four-wheel drive power system of an embodiment of the present application.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Front wheel; 2. Front drive axle; 3. Battery management module; 4. Power battery module; 5. Power output motor; 6. Power output shaft; 7. Rear drive axle; 8. Rear wheel; 9. Rear power input shaft; 10. Gearbox; 11. Motor rear output shaft; 12. Drive motor; 13. First controller; 14. Motor front output shaft; 15. Vehicle controller; 16. Electronically controlled clutch; 17. Front power input shaft. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] like Figure 1 As shown, the embodiment of the present application discloses a new energy four-drive power system, including a power battery module 4, a drive module, a drive shaft assembly, a front drive axle 2, a rear drive axle 7, a front power input shaft 17, a rear power input shaft 9 and a clutch. The power battery module 4 is the power source of the new energy vehicle. The power battery module 4 is electrically connected to the drive module, and the drive module is connected to the drive shaft assembly. The power battery module 4 can transmit electrical energy to the drive module so that the drive module can provide power for the drive shaft assembly.

[0031] One end of the rear power input shaft 9 is connected to the drive shaft assembly, and the other end of the rear power input shaft 9 is connected to the rear drive axle 7. The rear drive axle 7 is connected to the two rear wheels 8 of the new energy vehicle. The drive shaft assembly can transmit power to the rear power input shaft 9, and the rear power input shaft 9 then transmits power to the rear drive axle 7. The rear drive axle 7 can provide power to the two rear wheels 8.

[0032] like Figure 1 As shown, the drive shaft assembly is connected to one end of the front power input shaft 17 through a clutch, and the other end of the front power input shaft 17 is connected to the front drive axle 2, and the front drive axle 2 is connected to the two front wheels 1 of the new energy vehicle. When the clutch is engaged, the drive shaft assembly can transmit power to the front power input shaft 17, and the front power input shaft 17 then transmits power to the front drive axle 2, and the front drive axle 2 can provide power for the two front wheels 1, thereby realizing the four-wheel drive of the new energy vehicle. When the clutch is disconnected, the drive shaft assembly cannot transmit power to the front power input shaft 17, the power of the front drive axle 2 is interrupted, and the new energy vehicle enters a two-wheel drive mode driven by the rear wheels 8.

[0033] In this embodiment, the drive shaft assembly transmits power to the rear power input shaft 9, so that the rear drive axle 7 can obtain power, and controls the power acquisition of the front drive axle 2 through the engagement and disengagement state of the clutch, so that the new energy four-wheel drive power system does not need to set up a transfer case to realize the four-wheel drive function of the new energy vehicle, the structure is simple, and the cost is reduced.

[0034] like Figure 1 As shown, in this embodiment, the clutch can be an electronically controlled clutch 16, and the new energy four-wheel drive power system also includes a control module, which is electrically connected to the drive module and the clutch. The control module can control the speed, torque and other operating states of the drive module, as well as the working condition of the electronically controlled clutch 16.

[0035] The drive module may include a drive motor 12 and a gearbox 10, the drive shaft assembly includes a motor rear output shaft 11 and a motor front output shaft 14, the motor rear output shaft 11 and the motor front output shaft 14 are respectively connected to the drive motor 12, the gearbox 10 includes a speed change input shaft and a speed change output shaft, the end of the motor rear output shaft 11 away from the drive motor 12 is connected to the speed change input shaft, the speed change output shaft is connected to the rear power input shaft 9, and the end of the motor front output shaft 14 away from the drive motor 12 is connected to the clutch. In this embodiment, the gearbox 10 can be a two-speed automatic gearbox 10.

[0036] like Figure 1 As shown, the control module includes a vehicle controller 15 (VCU) and a first controller 13, the first controller 13 is electrically connected to the drive motor 12, and the vehicle controller 15 is electrically connected to the first controller 13 and the clutch respectively. The vehicle controller 15 is electrically connected to a battery management module 3 (BMS), the battery management module 3 is electrically connected to a power battery module 4, and the power battery module 4 is also electrically connected to the first controller 13. Exemplarily, the power battery module 4 can be electrically connected to the first controller 13 at high voltage. The battery management module 3 is responsible for monitoring, managing and protecting the power battery module 4 to ensure the safe, efficient and long-lasting use of the batteries in the power battery module 4.

[0037] The vehicle controller 15 is also connected to a four-wheel drive switch. When the four-wheel drive switch is closed, the vehicle controller 15 can control the electronically controlled clutch 16 to engage, and the power of the drive motor 12 is transmitted to the front wheel 1 through the front output shaft 14 of the motor, the electronically controlled clutch 16, the front power input shaft 17, and the front drive axle 2, thereby realizing the four-wheel drive mode of the new energy vehicle. The front drive axle 2 also includes a reducer, which allows the speeds of the front wheels 1 and the rear wheels 8 to remain consistent when the new energy vehicle is in the four-wheel drive mode. When the four-wheel drive switch is disconnected, the vehicle controller 15 can control the electronically controlled clutch 16 to disconnect, the power of the front drive axle 2 is interrupted, and the new energy vehicle enters the two-wheel drive mode. The conversion between the two-wheel drive and four-wheel drive modes of the new energy vehicle is realized through the electronically controlled clutch 16, thereby improving the convenience of the conversion between the two-wheel drive and four-wheel drive modes of the new energy vehicle.

[0038] At present, new energy four-wheel drive tractors also use the traditional four-wheel drive transmission scheme corresponding to fuel four-wheel drive tractors. However, since new energy tractors basically use two or more motors for driving and power output, the use of the traditional four-wheel drive transmission scheme will cause the four-wheel drive shaft and the motor to interfere with each other during layout, making assembly difficult. In order to overcome the technical defects in the traditional four-wheel drive transmission scheme, in this embodiment, the drive motor 12 can be a motor with output at both ends, and the front output shaft 14 and the front power input shaft 17 of the motor are coaxially arranged with the drive motor 12, which improves the space utilization rate and makes the whole vehicle layout of the new energy vehicle easier.

[0039] like Figure 1 As shown, the new energy four-wheel drive power system may also include a power output motor 5 (PTO: Power Take-Off) for driving the supporting machinery of the new energy vehicle and a power output shaft 6 corresponding to the power output motor 5. The new energy vehicle may be a new energy tractor, and the supporting machinery is a supporting agricultural machinery. The power output motor 5 is a motor on the new energy tractor for outputting power to drive the supporting agricultural machinery, and the power output shaft 6 is connected to the supporting agricultural machinery of the new energy tractor. The power output motor 5 is used to drive the supporting agricultural machinery through the power output shaft 6.

[0040] The control module also includes a second controller, which is electrically connected to the power output motor 5 and can control the speed, torque and other operating states of the power output motor 5. In this embodiment, the first controller 13 can be integrated with the second controller into an integrated controller, which is a two-in-one motor controller.

[0041] In this embodiment, Figure 1 The dotted line connection between different devices can be used to represent high-voltage electrical connection, the black thin line connection between different devices can be used to represent electrical signal connection, and the black thick line connection between different devices can be used to represent mechanical connection.

[0042] like Figure 1 As shown, based on the same technical concept, the embodiment of the present application also discloses a new energy tractor using the above-mentioned new energy four-wheel drive power system, including the new energy four-wheel drive power system, two front wheels 1, two rear wheels 8 and matching agricultural machinery, the rear drive axle 7 in the new energy four-wheel drive power system is connected to the two rear wheels 8, the front drive axle 2 in the new energy four-wheel drive power system is connected to the two front wheels 1, and the power output shaft 6 corresponding to the power output motor 5 in the new energy four-wheel drive power system is connected to the matching agricultural machinery.

[0043] The terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A new energy four-wheel drive power system, characterized in that: It comprises a power battery module (4), a drive module, a drive shaft assembly, a front drive axle (2), a rear drive axle (7), a front power input shaft (17), a rear power input shaft (9) and a clutch, wherein the power battery module (4) is electrically connected to the drive module, and the drive module is connected to the drive shaft assembly; One end of the rear power input shaft (9) is connected to the drive shaft assembly, the other end of the rear power input shaft (9) is connected to the rear drive axle (7), and the rear drive axle (7) is connected to the rear wheels (8) of the new energy vehicle; The drive shaft assembly is connected to one end of the front power input shaft (17) through the clutch, the other end of the front power input shaft (17) is connected to the front drive axle (2), and the front drive axle (2) is connected to the front wheel (1) of the new energy vehicle.

2. A new energy four-wheel drive power system according to claim 1, characterized in that: The clutch is an electrically controlled clutch (16).

3. A new energy four-wheel drive power system according to claim 2, characterized in that: The system further comprises a control module which is electrically connected to the drive module and the electronically controlled clutch (16).

4. A new energy four-wheel drive power system according to claim 3, characterized in that: The drive module comprises a drive motor (12) and a gearbox (10), the drive shaft assembly comprises a motor rear output shaft (11) and a motor front output shaft (14), the motor rear output shaft (11) and the motor front output shaft (14) are respectively connected to the drive motor (12), the gearbox (10) comprises a speed change input shaft and a speed change output shaft, the end of the motor rear output shaft (11) away from the drive motor (12) is connected to the speed change input shaft, the speed change output shaft is connected to the rear power input shaft (9), and the end of the motor front output shaft (14) away from the drive motor (12) is connected to the clutch.

5. A new energy four-wheel drive power system according to claim 4, characterized in that: The control module comprises a vehicle controller (15) and a first controller (13), wherein the first controller (13) is electrically connected to the drive motor (12), the vehicle controller (15) is electrically connected to the first controller (13) and the electronically controlled clutch (16), respectively, and the first controller (13) is also electrically connected to the power battery module (4).

6. A new energy four-wheel drive power system according to claim 5, characterized in that: The vehicle controller (15) is electrically connected to a battery management module (3), and the battery management module (3) is electrically connected to the power battery module (4).

7. A new energy four-wheel drive power system according to claim 4, characterized in that: The driving motor (12) is a motor with outputs at both ends.

8. According to claim 7, a new energy four-wheel drive power system is characterized in that: The motor front output shaft (14), the front power input shaft (17) and the drive motor (12) are coaxially arranged.

9. The new energy four-wheel drive power system according to claim 5, characterized in that: The new energy vehicle includes a supporting machine, and the system also includes a power output motor (5) for driving the supporting machine to work, the power output motor (5) is electrically connected to a second controller, and the first controller (13) and the second controller are integrated into an integrated controller.

10. A new energy tractor using the new energy four-wheel drive power system according to any one of claims 1 to 9, characterized in that: The vehicle comprises a new energy four-wheel drive system, a front wheel (1) and a rear wheel (8), wherein the rear drive axle (7) in the new energy four-wheel drive system is connected to the rear wheel (8), and the front drive axle (2) in the new energy four-wheel drive system is connected to the front wheel (1).

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