Control system of electrically-driven hybrid gearbox

Abstract

The utility model relates to the technical field of electric drive control systems, in particular to an electric drive hybrid gearbox module and a control system, which comprise a transmission speed change system, 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 utility model relates to the technical field of electric drive control systems, and specifically, to an electric drive hybrid transmission control system. Background Art

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

[0003] Currently, tractors in my country primarily utilize an engine + mechanical stepped transmission for traction power output. Internationally, tractor transmissions incorporate both powershift and continuously variable transmissions, building upon the mechanical stepped transmission. These products boast a high degree of automation, effectively reducing operator workload. Furthermore, strategically automated gear and speed shifting enable automated optimal operation.

[0004] At present, my country still has shortcomings in high-power, high-pressure, and high-efficiency hydraulic components and technologies in hydraulic systems. The maximum power of domestic hydraulic continuously variable transmission systems does not exceed 100 horsepower, and high-horsepower hydraulic continuously variable transmission systems rely on foreign imports, which seriously restricts the technological upgrading and product output of my country's high-horsepower tractor products. Utility Model Content

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

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electric hybrid transmission 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 hybrid transmission control system includes 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 provided on the first output shaft, a 101 gear is provided on the output end of the first power source, the 101 gear and the 102 gear are meshed, the planetary hybrid and PTO clutch module includes a PTO power output hybrid clutch and a planetary 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, A 201 gear is provided on the shaft between the K1 wet clutch and the KPTO wet clutch, and also includes a second output shaft. The K2 wet clutch and the planetary hybrid structure are both installed on the second output shaft. A 103 gear is provided on the output end of the second power source. One end of the K2 wet clutch is connected to the planetary hybrid structure, and the other end is provided with a 104 gear. The 104 gear is engaged with the 103 gear. A third output shaft is provided at the output end of the KPTO wet clutch, and a fourth output shaft corresponding to the third output shaft is also provided. 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 defined 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 realize 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 realize DC power output, the battery module is linearly connected to the first power source and the second power source, and the first power source and the second power source are respectively the first motor and the second motor.

[0009] It is further defined that the mechanical speed change module includes gears 401 and 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 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.

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

[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, and the planetary gears are simultaneously meshed with the internal gear 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 301.

[0013] It is further defined that it also includes a mechanical reversing module, which 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 provided on the second output shaft next to the KR wet clutch. A 305 gear is also provided 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 is also provided that is meshed with the 304 gear.

[0014] The beneficial effects of adopting the above technical solution are:

[0015] 1. The utility model can realize the interchangeability of electric and hydraulic modules through modular combination, and realize the liquid-hybrid stepless speed change and electric-hybrid stepless speed change functions. Through the setting of the stepless speed change module, the setting of the mechanical speed change structure can be effectively reduced, the engine efficiency is improved and the fuel consumption is reduced.

[0016] 2. The utility model utilizes the characteristics of planetary gear power transmission and different combinations of K1 and K2 wet clutches to realize three drive modes: 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 drive modes can be switched at will during operation through the K1 and K2 wet clutches.

[0017] 3. A single planetary system is adopted. By arranging different power take-off modules and drive modules at the three ports of the single planetary system, namely the sun, planet carrier and 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

[0018] Figure 1 This is the configuration diagram of the utility model using dual motors and planetary structure to achieve reversing

[0019] Figure 2 This is the commutation configuration diagram of the utility model using a mechanical commutation structure to achieve hybrid power output

[0020] Figure 3 A-1 configuration diagram of embodiment 1 of the present utility model

[0021] Figure 4 A-2 configuration diagram of embodiment 2 of the present utility model

[0022] Figure 5 A-1-1 configuration diagram of embodiment 3 of the present utility model

[0023] 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 gear 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

[0024] The following is a further detailed description of the specific implementation methods of the present invention 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 to facilitate its implementation.

[0025] The utility model is an electric hybrid transmission control system. Through modular combination, the electric and hydraulic modules can be interchanged to realize the liquid hybrid stepless speed change and electric hybrid stepless speed change functions. Through the setting of the stepless 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

[0026] Specifically, if Figure 1 、 Figure 3As shown, an electric drive hybrid transmission control system includes a transmission speed change system, which 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, and a 102 gear is provided on the first output shaft 7. A 101 gear is provided 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. The PTO power output hybrid clutch 31 includes a K1 wet clutch. The 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, and a 201 gear is provided between the K1 wet clutch 311 and the KPTO wet clutch 313 on the first output shaft 7, and the 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, and a 103 gear is provided 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 and the 103 gear are meshed. The planetary gear hybrid structure 32 includes a 211 sun gear, a 212 sun gear, and a 213 sun gear. The planet carrier, the 213 gear ring and the 202 gear outside the 213 gear ring, the 202 gear and the 201 gear are meshed, the 211 sun gear is connected to the second output shaft 8, and 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. A 301 gear is provided on the output shaft of the 212 planet carrier, and a third output shaft 9 is provided at the output end of the KPTO wet clutch 313. A fourth output shaft 10 corresponding to the third output shaft 9 is also provided. The mechanical speed change module includes 401 gears-408 gears, 401 gears, 403 gears, 405 gears and 407 gears are installed on the third output shaft 9, and 402 gears, 404 gears, 406 gears and 408 gears are installed on the fourth output 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 to the first motor 21 and the second motor 22. An AC auxiliary drive and control device 12 and a DC auxiliary drive and control device 13 are also provided on the linearly connected line. The bus controller is used to control the distribution of the overall electric energy. The first motor 21 and the second motor 22 can both generate electricity.After power generation, it can be used to power the battery module 11 or external devices. It can output AC and DC to external devices. The specific overall power distribution is controlled and distributed by the bus controller.

[0027] 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 21 is connected to the 101 gear to realize electric drive force take-off, the second motor 22 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 loss-free PTO output, and the PTO power on and off is controlled by the KPTO wet clutch 313. Example 2

[0028] 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 sun gear 211, a gear ring 213 and a planet carrier 212, the second output shaft is connected to the sun gear 211, and a gear 2021 is provided on the planet carrier 212, the gear 2021 is meshed with the gear 201, the sun gear 211 is meshed with the planetary gears on the planet carrier 212, and the planetary gears are simultaneously 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.

[0029] The 212 planetary carrier realizes the input of engine power by meshing the 201 gear on the first output shaft 7 and 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

[0030] 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 provided on the second output shaft 8 next to the KR wet clutch 15, and a 305 gear is further provided 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 is also provided to mesh with the 304 gear.

[0031] The 212 planetary carrier is connected to the KV wet clutch 14 and the 301 and 302 gears to realize the reverse stepped output of the forward hybrid power on the fourth output shaft 10;

[0032] The 212 planetary 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.

[0033] By utilizing the characteristics of planetary gear power transmission and different combinations of K1 and K2 wet clutches, three drive 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 drive modes can be switched at will during operation through the K1 and K2 wet clutches, as follows:

[0034] 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 21 and the ring gear 213 respectively. The first motor 21 generates electricity and provides it to the second motor 22 through the power bus. The second motor 22 realizes the stepless speed change of the planetary system by changing the rotation direction and rotation speed.

[0035] 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 21, and the first motor 21 generates electricity and provides it to the second motor 22 through the power bus. The second motor 22 realizes stepless speed change of the transmission system by changing the rotation direction and rotation speed.

[0036] 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 transmission to achieve pure mechanical transmission. The first motor 21 and the second motor 22 both act as generators to transmit power to the battery module 11 and provide power to the outside.

[0037] When the first motor 21 and the second motor 22 in the above modes are used as generators, they can power the battery module 11 and external devices. They can output AC and DC to external devices, and the specific overall power distribution is controlled and distributed by the bus controller.

[0038] The above is an exemplary description of the present invention 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 scope of protection of the present invention.

Claims

1. An electric hybrid transmission control system, characterized by: 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 102 gear is provided on the first output shaft (7), a 101 gear is provided on the output end of the first power source, and the 101 gear and The 102 gears are engaged, 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 provided 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 provided 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 (313) 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 installed on the third output shaft (9) and the fourth output shaft (10). The third output shaft (9) is connected to the PTO output, and the fourth output shaft (10) is connected to the drive axle. The front axle and rear axle modules (6) are arranged on the drive axle, and the PTO output module (5) is arranged on the PTO output.

2. The electric hybrid transmission control system according to claim 1, characterized in that: The invention also includes a battery module (11) and a bus controller. The battery module (11) is linearly connected to a first power source and a second power source. The first power source and the second power source are respectively a first motor (21) and a second motor (22). An AC auxiliary drive and control device (12) and a DC auxiliary drive and control device (13) are also provided on the linearly connected line. The bus controller is used to control the distribution of the overall electric energy.

3. The electric hybrid transmission control system according to claim 1, characterized in that: The mechanical speed change module (4) includes gears 401 and 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). 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 control system according to claim 1, characterized in that: The planetary gear hybrid structure (32) includes a sun gear 211, a planet carrier 212, a gear ring 213 and a gear 202 outside the gear ring 213, the gear 202 is meshed with the gear 201, the sun gear 211 is connected to the second output shaft (8), the planetary gears on the planet carrier 212 are meshed with the sun gear 211 and the internal gear of the gear ring 213, and a gear 301 is provided on the output shaft of the planet carrier 212.

5. The electric hybrid transmission control system according to claim 1, characterized in that: The planetary gear hybrid structure (32) includes 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, and the planetary gear is 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 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 301.

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

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