Electrically-driven hybrid gearbox module and control system

Abstract

The invention relates to the technical field of electric drive control systems, in particular to an electric drive hybrid gearbox module and a control system.The electric drive hybrid gearbox module comprises a transmission speed change system, and the transmission speed change system comprises an engine, a power unit module, a planetary hybrid and PTO clutch module, a mechanical speed change module, a PTO output module and a front axle and rear axle module; the power unit module comprises a first power source and a second power source, the planetary hybrid power and PTO clutch module comprises a PTO power output hybrid clutch and a planetary wheel hybrid power structure, the front axle and rear axle module is arranged on the drive axle, the PTO output module is arranged on a PTO output, a motor is adopted to replace a traditional hydrostatic system, and the power unit module is connected with the front axle and rear axle module. And by combining a power gear shifting technology, the problem that a tractor at the present stage cannot work by using a high-horsepower hydraulic stepless speed change system is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric drive control systems, and in particular to an electric drive hybrid transmission module and an electric drive bus control system. Background Art

[0002] The operating conditions of tractors are complex and diverse, and the corresponding operating speeds and traction loads are also diverse and complex. During operation, the tractor needs to frequently change the speed ratio of the gearbox by shifting gears to keep the engine in a relatively economical and efficient working state. Therefore, the forward and reverse gears of the gearbox of tractor products are usually more than 10, and some gearboxes even have about 40 gears.

[0003] At present, the gearboxes of tractors in the world have applied power shift boxes and continuously variable gearboxes based on mechanical stepped gearboxes. The products have a high degree of automation and can effectively reduce the workload of operators. At the same time, automatic optimal operation is achieved through strategic automatic shifting and speed change. Summary of the invention

[0005] The present invention provides an electric drive hybrid transmission module and an electric drive bus control system, which adopts an electric motor to replace a traditional static hydraulic system and combines power shifting technology to solve the problem that current tractors cannot use a high-horsepower hydraulic continuously variable transmission system to work.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electric drive hybrid transmission module and control system, in which the transmission speed change system adopts an overall layout in a three-stage direct connection mode of an engine, a hybrid module of a dual motor unit plus a single planetary gear, and a mechanical or power shift module. It takes into account the transmission technology characteristics of existing products and the E-CVT product of hydraulic CVT stepless hybrid technology, and realizes electric drive stepless speed change under multi-level mechanical gears.

[0007] An electric drive hybrid transmission module and control system, including a transmission speed change system, the transmission speed change system includes an engine, a power unit module, a planetary hybrid and PTO clutch module, a mechanical speed change module, a PTO output module and a front axle and rear axle module, the power unit module includes a first power source and a second power source, the output end of the engine is connected to a first output shaft, a 102 gear is arranged on the first output shaft, a 101 gear is arranged on the output end of the first power source, the 101 gear is meshed with the 102 gear, the planetary hybrid and PTO clutch module includes a PTO power output hybrid clutch and a planetary gear hybrid structure, the PTO power output hybrid clutch includes a K1 wet clutch, a K2 wet clutch and a KPTO wet clutch, the K1 wet clutch and the KPTO wet clutch are both installed on the first output shaft, and the first A 201 gear is arranged on the output shaft between the K1 wet clutch and the KPTO wet clutch, and a second output shaft is also included. The K2 wet clutch and the planetary gear hybrid structure are both installed on the second output shaft. A 103 gear is arranged on the output end of the second power source. One end of the K2 wet clutch is connected to the planetary gear hybrid structure, and the other end is provided with a 104 gear. The 104 gear is meshed with the 103 gear. A third output shaft is arranged on the output end of the KPTO wet clutch, and a fourth output shaft corresponding to the third output shaft is also arranged. The components in the mechanical speed change module are all installed on the third output shaft and the fourth output shaft. The third output shaft is connected to the PTO output, and the fourth output shaft is connected to the drive axle. The front axle and rear axle modules are arranged on the drive axle, and the PTO output module is arranged on the PTO output.

[0008] It is further limited that it also includes a first external device, a second external device and a battery module, the first external device includes an AC auxiliary drive and control device, the AC auxiliary drive and control device is connected to the first power source through an inverter to achieve AC power output, the second external device includes a DC auxiliary drive and control device, the DC auxiliary drive and control device is connected to the second power source through an inverter to achieve DC power output, and the battery module is connected to the first power source and the second power source.

[0009] It is further defined that the mechanical speed change module includes gears 401-408, gears 401, 403, 405 and 407 are installed on the third output shaft, gears 402, 404, 406 and 408 are installed on the fourth output shaft, gears 401 and 402 are meshed, gears 403 and 404 are meshed, gears 405 and 406 are meshed, and gears 407 and 408 are meshed.

[0010] It is further defined that the planetary gear hybrid structure includes a 211 sun gear, a 212 planet carrier, a 213 gear ring and a 202 gear outside the 213 gear ring, the 202 gear is meshed with the 201 gear, the 211 sun gear is connected to the second output shaft, the planetary gears on the 212 planet carrier are meshed with the 211 sun gear and the internal gear of the 213 gear ring at the same time, and a 301 gear is arranged on the output shaft of the 212 planet carrier.

[0011] It is further defined that the planetary gear hybrid structure includes a 211 sun gear, a 213 gear ring and a 212 planet carrier, the second output shaft is connected to the 211 sun gear, the 212 planet carrier is provided with a 2021 gear, the 2021 gear is meshed with the 201 gear, the 211 sun gear is meshed with the planetary gears on the 212 planet carrier, the planetary gears are also meshed with the internal gears of the 213 gear ring, the 213 gear ring is provided with an output shaft, and the output shaft is provided with a 301 gear.

[0012] It is further defined that a gear 302 is provided on the third output shaft between the KPTO wet clutch and the gear 401, and the gear 302 is meshed with the gear 310.

[0013] It is further defined that it also includes a mechanical reversing module, the mechanical reversing module includes a KV wet clutch and a KR wet clutch, the KV wet clutch and the KR wet clutch are both installed on the second output shaft, a 304 gear is arranged on the second output shaft beside the KR wet clutch, a 305 gear is also arranged on the third output shaft between the 302 gear and the 401 gear, the 305 gear is meshed with the 304 gear, and a 303 gear meshed with the 304 gear is also arranged.

[0014] The beneficial effects of adopting the above technical solution are: 1. The present invention can realize the interchangeability of electric and hydraulic modules through modular combination, realize the liquid-mixed continuously variable speed change and electric-mixed continuously variable speed change functions, and through the setting of the continuously variable speed change module, the setting of the mechanical speed change structure can be effectively reduced, the engine efficiency can be improved, and the fuel consumption can be reduced.

[0015] 2. The present invention utilizes the characteristics of planetary gear power transmission and different combinations of K1 and K2 wet clutches to realize three driving modes: extended-range drive of engine-generator-motor-mechanical transmission module, plug-in hybrid drive of engine-generator-motor + planetary hybrid-mechanical transmission module, and engine-mechanical transmission module. The above three driving modes can be switched at will during operation through K1 and K2 wet clutches.

[0016] 3. A single planetary system is adopted. Different power take-off modules and drive modules are arranged at the three ports of the single planetary system: the sun, the planet carrier, and the ring gear. The engine mechanical power is converted into hydraulic power and electricity. The electric stepless speed change system is used to realize the stepless speed regulation function of the entire transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a configuration diagram of the present invention using dual motors and a planetary structure to achieve commutation Figure 2 The present invention uses a mechanical reversing structure to achieve a reversing configuration diagram of hybrid power output Figure 3 A-1 configuration diagram of Example 1 of the present invention Figure 4 A-2 configuration diagram of embodiment 2 of the present invention Figure 5 A-1-1 configuration diagram of Example 3 of the present invention The markings in the figure correspond to: 1-engine, 2-power unit module, 21-first motor, 22-second motor, 3-planetary hybrid and PTO clutch module, 31-PTO power output hybrid clutch, 311-K1 wet clutch, 312-K2 wet clutch, 313-KPTO wet clutch, 32-planetary hybrid structure, 4-mechanical speed module, 5-PTO output module, 6-front axle and rear axle module, 7-first output shaft, 8-second output shaft, 9-third output shaft, 10-fourth output shaft, 11-battery module, 12-AC auxiliary drive and control equipment, 13-DC auxiliary drive and control equipment, 14-KV wet clutch, 15-KR wet clutch, 16-mechanical reversing module. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0019] The present invention is an electric drive hybrid transmission module and control system. Through modular combination, the electric and hydraulic modules can be interchanged to achieve liquid hybrid continuously variable speed change and electric hybrid continuously variable speed change functions. Through the setting of the continuously variable speed change module, the setting of the mechanical speed change structure can be effectively reduced, the engine efficiency can be improved, and the fuel consumption can be reduced. Example 1

[0020] Specifically, Figure 1 , Figure 3As shown, an electric drive hybrid transmission module and control system include a transmission speed change system, wherein the transmission speed change system includes an engine 1, a power unit module 2, a planetary hybrid and PTO clutch module 3, a mechanical speed change module 4, a PTO output module 5 and a front axle and rear axle module 6, the power unit module 2 includes a first motor 21 and a second motor 22, the output end of the engine 1 is connected to a first output shaft 7, a 102 gear is arranged on the first output shaft 7, a 101 gear is arranged at the output end of the first motor 21, and the 101 gear and the 102 gear are meshed, the planetary hybrid and PTO clutch module 3 includes a PTO power output hybrid clutch 31 and a planetary gear hybrid structure 32, and the PTO power output hybrid clutch 31 includes K1 The wet clutch 311, the K2 wet clutch 312 and the KPTO wet clutch 313, the K1 wet clutch 311 and the KPTO wet clutch 313 are all mounted on the first output shaft 7, a 201 gear is arranged between the K1 wet clutch 311 and the KPTO wet clutch 313 on the first output shaft 7, and a second output shaft 8 is also included, the K2 wet clutch 312 and the planetary gear hybrid structure 32 are all mounted on the second output shaft 8, a 103 gear is arranged on the output end of the second motor 22, one end of the K2 wet clutch 312 is connected to the planetary gear hybrid structure 32, and the other end is provided with a 104 gear, the 104 gear is meshed with the 103 gear, and the planetary gear hybrid structure 32 includes a 211 sun gear, a 21 2 planet carrier, 213 gear ring and 202 gear outside 213 gear ring, 202 gear and 201 gear are meshed, 211 sun gear is connected to the second output shaft 8, the planetary gear on 212 planet carrier is meshed with 211 sun gear and the inner gear of 213 gear ring at the same time, 301 gear is arranged on the output shaft of 212 planet carrier, the output end of KPTO wet clutch 313 is arranged with the third output shaft 9, and the fourth output shaft 10 corresponding to the third output shaft 9 is also arranged, the mechanical speed change module includes 401 gear-408 gear, 401 gear, 403 gear, 405 gear and 407 gear are installed on the third output shaft 9, 402 gear, 404 gear, 406 gear and 408 gear are installed on the fourth output shaft On the shaft 10, gear 401 is meshed with gear 402, gear 403 is meshed with gear 404, gear 405 is meshed with gear 406, gear 407 is meshed with gear 408, the third output shaft 9 is connected to the PTO output, the fourth output shaft 10 is connected to the drive axle, the front axle and rear axle module 6 is arranged on the drive axle, the PTO output module 5 is arranged on the PTO output, and also includes a battery module 11 and a bus controller, the battery module 11 is linearly connected with the first motor 31 and the second motor 32, and an AC auxiliary drive and control device 12 and a DC auxiliary drive and control device 13 are also arranged on the linearly connected line, and the bus controller is used to control the distribution of the overall electric energy, and the first motor 31 and the second motor 32 can both generate electricity,After power generation, the battery module 11 can be powered and external devices can be powered. AC and DC outputs can be performed for external devices. The specific overall power distribution is controlled and distributed by the bus controller.

[0021] The engine 1 is connected to the 102 gear through the first output shaft 7, the 102 gear is meshed with the 101 gear, the first motor 31 is connected to the 101 gear to realize electric drive force take-off, the second motor 32 is connected to the 211 sun gear through the 103 gear and the 104 gear to realize hybrid power input, the 213 ring gear realizes the input of engine power through the 201 gear on the first output shaft 7 and the 202 gear on the ring gear, the 212 planetary carrier realizes the stepped output of hybrid power on the fourth output shaft 10 through the 301 gear and the 302 gear on the third output shaft 9 and the four sets of gears on the third output shaft 9 and the fourth output shaft 10, the engine 1 is directly connected to the input end of the PTO power output hybrid clutch 31 to realize lossless PTO output, and the PTO power on and off is controlled by the KPTO wet clutch 313. Example 2

[0022] like Figure 2 , Figure 4 As shown, the difference between Example 2 and Example 1 is that in Example 2, the planetary gear hybrid structure includes a 211 sun gear, a 213 gear ring and a 212 planet carrier, the second output shaft is connected to the 211 sun gear, a 2021 gear is provided on the 212 planet carrier, the 2021 gear is meshed with the 201 gear, the 211 sun gear is meshed with the planetary gears on the 212 planet carrier, and the planetary gears are meshed with the internal gear of the 213 gear ring at the same time, the 213 gear ring is provided with an output shaft, and the output shaft is provided with a 301 gear.

[0023] The 212 planetary carrier realizes the input of engine power by meshing the 201 gear on the first output shaft 7 with the 2021 gear on the 212 planetary carrier, and realizes the stepped output of hybrid power on the fourth output shaft 10 through four sets of gears on the third output shaft 9 and the fourth output shaft 10. Example 3

[0024] like Figure 5 As shown, the difference between Example 3 and Example 1 is that: it also includes a mechanical reversing module 16, and the mechanical reversing module includes a KV wet clutch 14 and a KR wet clutch 15. The KV wet clutch 14 and the KR wet clutch 15 are both installed on the second output shaft 8. A 304 gear is arranged on the second output shaft 8 beside the KR wet clutch 15, and a 305 gear is also arranged on the third output shaft 9 between the 302 gear and the 401 gear. The 305 gear is meshed with the 304 gear. At the same time, a 303 gear meshed with the 304 gear is also arranged.

[0025] The 212 planet carrier is connected through the KV wet clutch 14 and the 301 gear and the 302 gear to realize the reverse step-by-step output of the forward hybrid power on the fourth output shaft 10; The 212 planet carrier is combined with the 303 gear and the 305 gear through the KR wet clutch 15 to realize the reverse stepped output of the forward hybrid power on the fourth output shaft 10 .

[0026] By utilizing the characteristics of planetary gear power transmission and different combinations of K1 and K2 wet clutches, three driving modes can be realized: engine-generator-motor-mechanical transmission module extended-range drive, engine-generator-motor + planetary hybrid-mechanical transmission module plug-in hybrid drive, and engine-mechanical transmission module. The above three driving modes can be switched at will during work through K1 and K2 wet clutches, as follows: When the K1 wet clutch 311 is engaged and the K2 wet clutch 312 is disengaged, the power of the engine 1 is transmitted to the first motor 31 and the ring gear 213 respectively. The first motor 31 generates electricity and provides it to the second motor 32 through the power bus. The second motor 32 realizes the stepless speed change of the planetary system by changing the rotation direction and rotation speed.

[0027] When the K1 wet clutch 311 is disengaged and the K2 wet clutch 312 is engaged, the power of the engine 1 is transmitted to the first motor 31, and the first motor 31 generates electricity which is provided to the second motor 32 through the power bus. The second motor 32 realizes stepless speed change of the transmission system by changing the rotation direction and the rotation speed.

[0028] When the K1 wet clutch 311 and the K2 wet clutch 312 are both engaged, the power of the engine 1 is directly transmitted to the mechanical gearbox to achieve pure mechanical transmission. The first motor 31 and the second motor 32 both act as generators to transmit power to the battery module 11 and provide power to the outside.

[0029] When the first motor 31 and the second motor 32 in the above modes are used as generators, they can power the battery module 11 and external devices. AC and DC outputs can be performed for external devices, and the specific overall power distribution is controlled and distributed by the bus controller.

[0030] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An electric hybrid transmission module and control system, characterized in that: The invention comprises a transmission speed change system, wherein the transmission speed change system comprises an engine (1), a power unit module (2), a planetary hybrid and PTO clutch module (3), a mechanical speed change module (4), a PTO output module (5) and a front axle and rear axle module (6), wherein the power unit module (2) comprises a first power source and a second power source, wherein the output end of the engine (1) is connected to a first output shaft (7), a gear 102 is arranged on the first output shaft (7), and a gear 101 is arranged on the output end of the first power source, wherein the gear 101 and The 102 gears are meshed, the planetary hybrid and PTO clutch module (3) includes a PTO power output hybrid clutch (31) and a planetary hybrid structure (32), the PTO power output hybrid clutch (31) includes a K1 wet clutch (311), a K2 wet clutch (312) and a KPTO wet clutch (313), the K1 wet clutch (311) and the KPTO wet clutch (313) are both mounted on the first output shaft (7), and are located on the first output shaft (7). A gear 201 is arranged between the K1 wet clutch (311) and the KPTO wet clutch (313), and a second output shaft (8) is also included. The K2 wet clutch (312) and the planetary gear hybrid structure (32) are both mounted on the second output shaft (8). A gear 103 is arranged on the output end of the second power source. One end of the K2 wet clutch (312) is connected to the planetary gear hybrid structure (32), and the other end is provided with a gear 104. The gear 104 is meshed with the gear 103. The KPTO wet clutch (312) is connected to the planetary gear hybrid structure (32). The output end of the TO wet clutch (311) is provided with a third output shaft (9), and a fourth output shaft (10) corresponding to the third output shaft (9); the components in the mechanical speed change module (4) are all mounted on the third output shaft (9) and the fourth output shaft (10); the third output shaft (9) is connected to the PTO output, the fourth output shaft (10) is connected to the drive axle, the front axle and rear axle module (6) is arranged on the drive axle, and the PTO output module (5) is arranged on the PTO output.

2. The electric hybrid transmission module and control system according to claim 1, characterized in that: It also includes a battery module (11) and a bus controller. The battery module (11) is linearly connected to the first power source and the second power source. An AC auxiliary drive and control device (12) and a DC auxiliary drive and control device (13) are also arranged on the linear connection line. The bus controller is used to control the distribution of overall electric energy.

3. The electric hybrid transmission module and control system according to claim 1, characterized in that: The mechanical transmission module (4) includes gears 401 to 408, wherein gears 401, 403, 405 and 407 are mounted on the third output shaft (9), and gears 402, 404, 406 and 408 are mounted on the fourth output shaft (10), wherein gears 401 and 402 are meshed with each other, gears 403 and 404 are meshed with each other, gears 405 and 406 are meshed with each other, and gears 407 and 408 are meshed with each other.

4. The electric hybrid transmission module and control system according to claim 1, characterized in that: The planetary gear hybrid structure (32) comprises a sun gear 211, a planet carrier 212, a gear ring 213 and a gear 202 outside the gear ring 213, the gear 202 meshing with the gear 201, the sun gear 211 being connected to the second output shaft (8), the planetary gears on the planet carrier 212 meshing with the sun gear 211 and the internal gear of the gear ring 213, and a gear 301 being arranged on the output shaft of the planet carrier 212.

5. The electric hybrid transmission module and control system according to claim 1, characterized in that: The planetary gear hybrid structure (32) comprises a sun gear 211, a gear ring 213 and a planet carrier 212, the second output shaft (8) is connected to the sun gear 211, the planet carrier 212 is provided with a gear 2021, the gear 2021 is meshed with the gear 201, the sun gear 211 is meshed with the planetary gear on the planet carrier 212, the planetary gear is also meshed with the internal gear of the gear ring 213, the gear ring 213 is provided with an output shaft, and the output shaft is provided with a gear 301.

6. An electric hybrid transmission module and control system according to claim 4 or 5, characterized in that: A gear 302 is provided on the third output shaft (9) between the KPTO wet clutch (313) and the gear 401, and the gear 302 is meshed with the gear 310.

7. The electric hybrid transmission module and control system according to claim 4, characterized in that: The invention also comprises a mechanical reversing module (16), wherein the mechanical reversing module (16) comprises a KV wet clutch (14) and a KR wet clutch (15), wherein the KV wet clutch (14) and the KR wet clutch (15) are both mounted on the second output shaft (8), a gear 304 is arranged on the second output shaft (8) beside the KR wet clutch (15), a gear 305 is arranged on the third output shaft (9) between the gear 302 and the gear 401, the gear 305 is meshed with the gear 304, and a gear 303 is arranged which is meshed with the gear 304.

8. The electric hybrid transmission module and control system according to claim 1, characterized in that: The first power source and the second power source are respectively a first motor (31) and a second motor (32).

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