CN111376698A - A double-disc motor electric stepless speed change mechatronics system - Google Patents

Abstract

The utility model provides a two disk motor electronic infinitely variable speed mechatronics systems, it includes shell, planet wheel, sun gear, input shaft, planet carrier, ring gear frame, ring gear, output shaft, hollow shaft, ISG motor stator, ISG motor rotor, main drive motor stator, main drive motor rotor, main drive motor stator. And the ISG motor stator and the ISG motor rotor form an ISG disc type motor. The main drive motor stator and the main drive motor rotor form a main drive motor with a double-stator structure. The output shaft passes through the interior of the hollow shaft, and supporting bearings are arranged between the front end and the rear end of the hollow shaft and the output shaft. The sun wheel, the planet wheel and the gear ring form a planet row. The ISG motor stator and the main drive motor stator are connected together and are connected with the hollow shaft through a supporting bearing. And the ISG motor stator side shell is connected with the hollow shaft through a supporting bearing, and the main drive motor stator side shell is connected with the output shaft through a supporting bearing. The invention has compact structure, high power density, high system efficiency and outstanding NVH characteristic.

Description

A double-disc motor electric stepless speed change mechatronics system

technical field

The invention belongs to the technical field of auto parts, and in particular relates to a double-disc motor electric stepless speed change mechatronics system.

Background technique

With the rapid development of the automobile industry, "energy saving" and "emission reduction" have become the main theme of the development of the automobile industry. As an intermediate product of the transition from traditional power to new energy power, the hybrid power system has outstanding energy-saving effect, and at the same time takes into account the convenience of use and driver's habits, and has become an essential technical solution for the development of current automobiles.

According to its structural principle, hybrids are divided into three types: series hybrids, parallel hybrids, and hybrid hybrids. Among them, hybrid hybrids take into account the advantages of series hybrids and parallel hybrids in principle, and can achieve engine speed. It has the characteristics of high fuel economy, flexible control and strong dynamic performance, which is valued by related parts manufacturers and vehicle manufacturers. The hybrid hybrid system generally consists of a motor-generator, a main drive motor, and a coupling system. According to the structure type of the coupling system, it is divided into two types: switch hybrid and planetary hybrid. Among them, the planetary hybrid hybrid The system utilizes the motion characteristics of the planetary row, and through the coordinated control of the engine, the motor-generator unit and the main drive motor, fully decouples the engine speed and torque on the basis of satisfying the driving power requirements, so that the engine runs in the economic range to achieve higher of fuel economy. Toyota's planetary hybrid system has become the world's most popular hybrid system. The electronically controlled infinitely variable mechatronic system based on the planetary platoon is the core component of the planetary hybrid hybrid system, and its performance is directly related to the fuel economy, power and comfort of the hybrid vehicle.

The dual motors in the conventional planetary hybrid CVT mechatronic system are usually cylindrical dual motors arranged side by side or side-by-side. Cylindrical motors are affected by the stator end windings and have relatively long axial dimensions; affected by the contact area of the stator cooling water channel, the heat dissipation efficiency is relatively low; affected by the weight of the stator and rotor iron cores and cogging, the power density is low and there is torque pulsation condition. When the dual cylindrical motors are arranged side by side, the axial dimension of the system is longer, the volume is larger, and the power density is relatively small; when the dual motors are arranged side by side, the side shaft motors are usually transmitted by gears or belts, and the radial size of the system is large and the power density is relatively small. low transmission efficiency, radial unbalanced force, etc. In order to further improve the system efficiency of the hybrid hybrid, meet the needs of more compact vehicle layout, meet the needs of vehicle lightweight, and improve the NVH characteristics of the vehicle and the reliability of components, there is an urgent need for a compact structure, high efficiency, power density. High and lightweight electronically controlled continuously variable speed mechatronic system based on planetary row.

SUMMARY OF THE INVENTION

Aiming at the problems of large size, low power density, relatively low system efficiency, and poor NVH characteristics of the planetary row-based electronically controlled infinitely variable mechatronics system in the prior art, the present invention provides a compact structure, high power density, etc. Large, high system efficiency, outstanding NVH characteristics, dual-disc motor electric infinitely variable mechatronics system based on planetary row.

In order to achieve the above object, the present invention adopts the following technical solutions:

A double-disc motor electric stepless speed change mechatronics system, comprising a casing, a planetary gear, a sun gear, an input shaft, a planetary carrier, a ring gear carrier, a ring gear, an output shaft, a hollow shaft, an ISG motor stator, and an ISG motor stator , ISG motor rotor, main drive motor stator, main drive motor rotor, main drive motor stator.

The ISG motor stator includes a first ISG motor stator and a second ISG motor stator, and the first ISG motor stator, the second ISG motor stator and the ISG motor rotor form an ISG disc motor with a double stator structure.

The main drive motor stator includes a main drive motor stator 1 and a main drive motor stator 2. The main drive motor stator 1, the main drive motor stator 2 and the main drive motor rotor form a main drive motor with a double stator structure.

The shells of the main drive motor and the ISG motor can be filled with oil to achieve oil lubrication, and can also be cooled by cooling liquid by using the internal water channels of their respective stators.

The output shaft passes through the interior of the hollow shaft, and a support bearing is arranged between the front end and the rear end of the hollow shaft and the output shaft.

The sun gear, planetary gear and ring gear form a planetary row.

The stator of the ISG motor and the stator of the main drive motor are connected together, and are connected with the hollow shaft through the support bearing.

The stator-side casing of the ISG motor is connected to the hollow shaft through a support bearing, and the main-drive motor stator-side casing is connected to the output shaft through a support bearing.

Further, the stator of the ISG motor includes a stator winding, a stator iron core, and a cooling water channel.

Further, the distance between the stator of the ISG motor and the rotor of the ISG motor is the size of the air gap of the ISG motor.

Further, the cooling water channel inside the stator of the ISG motor uses cooling liquid for liquid cooling cooling.

Further, the stator of the main drive motor and the stator of the ISG motor are respectively connected to the casing.

Further, the rotor of the ISG motor is connected with the hollow shaft.

Further, the stator of the ISG motor is arranged with a fixed end of the rotary encoder, and the rotor part of the ISG motor is fixed with the moving part of the rotary encoder.

Further, the stator of the main drive motor and the stator of the ISG motor include but are not limited to stator windings, stator iron cores, and cooling water channels.

Further, the cooling water channel inside the stator of the main drive motor uses cooling liquid for liquid cooling.

Further, the distance between the stator of the main drive motor and the rotor of the main drive motor is the size of the air gap of the main drive motor.

Further, the rotor of the main drive motor is connected to the output shaft.

Further, the stator of the main drive motor is arranged with a fixed end of the rotary encoder, and the rotor of the main drive motor is fixed to the moving part of the rotary encoder.

Further, the sun gear is connected with the rotor of the ISG motor through a hollow shaft.

Further, one side of the planetary gear is connected to the input shaft through a planet carrier, and the other side of the planetary gear is a support arm structure, and the support arm is connected to the hollow shaft through a support bearing.

Further, the input shaft is connected to the housing through a support bearing, the inner side of the support bearing is a seal, and the support bearing and the seal are used in parallel to achieve oil-liquid sealing.

Further, the ring gear is connected to the output shaft through a ring gear carrier.

Further, the casing is filled with oil, preferably gear oil.

Further, an oil filling port and an oil drain port are also arranged on the outer casing on the side of the planetary row.

The beneficial effects of the present invention are:

1. The axial dimension of the disc motor is short. In the present invention, the double disc motor further shares the shell structure, the axial dimension of the system is short, the structure is more compact, and the arrangement requirements for higher space requirements are met;

2. The disc motor adopts an ironless electric drive structure, there is no torque pulsation caused by the cogging of the cylindrical motor, the torque output is stable, and the NVH characteristics of the system are significantly improved;

3. The disc motor has no hysteresis and eddy current loss, and can achieve higher efficiency, so that the system can achieve higher efficiency;

4. The peak torque and locked-rotor torque of the disc motor are high, and the torque density is large. The system can reach a wide torque range and meet the torque output requirements of the vehicle under various working conditions;

5. In the present invention, a plurality of modular main drive motors and ISG motors can be arranged side by side to achieve higher output torque or output power, in terms of system-level platform, modular, and standardized layout;

6. In the present invention, the radial support of the bearings at both ends of the output shaft and the hollow shaft not only ensures the coaxiality and smoothness of the transmission shaft, but also realizes the axial limit of the stator, rotor and planetary gear train, ensuring the system Safety;

7. In the present invention, each support bearing has the functions of radial support and axial limit, which not only ensures the coaxiality of the moving parts during the working process, but also avoids axial displacement and ensures the safety of the system.

Description of drawings

Fig. 1 is the structural representation of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a double-disc motor nested electric stepless speed change mechatronics system according to the present invention.

Reference numerals: 1-housing, 2-planet gear, 3-sun gear, 4-input shaft, 5-planet carrier, 6-ring gear carrier, 7-ring gear, 8-output shaft, 9-hollow shaft, 10 -ISG motor stator one, 11-ISG motor stator two, 12-ISG motor rotor, 13-main drive motor stator one, 14-main drive motor rotor, 15-main drive motor stator two, 16- torsional shock absorber input , 17- torsional shock absorber output end, 18- engine, 19- flywheel output end, 20- drive shaft, 21- main reducer, 22- drive axle, 23- power battery, 24- high voltage power distribution unit, 25- Main drive motor inverter, 26-ISG motor inverter, 27-high voltage wiring harness.

Detailed ways

For ease of understanding, below in conjunction with the accompanying drawings, the technical solutions of the present invention will be further described in detail through embodiments:

As shown in Figures 1-2, a double-disc motor electric stepless speed change mechatronics system includes a casing 1, a planetary gear 2, a sun gear 3, an input shaft 4, a planetary carrier 5, a ring gear carrier 6, a ring gear 7. Output shaft 8, hollow shaft 9, ISG motor stator one 10, ISG motor stator two 11, ISG motor rotor 12, main drive motor stator one 13, main drive motor rotor 14 and main drive motor stator two 15.

ISG motor stator one 10, ISG motor stator two 11 and ISG motor rotor 12 form an ISG disc motor with a double stator structure. The first stator 10 of the ISG motor and the second stator 11 of the ISG motor include but are not limited to stator windings, stator iron cores, and cooling water channels.

The distance between the first stator 10 of the ISG motor and the rotor 12 of the ISG motor, and the distance between the stator 2 of the ISG motor and the rotor 12 of the ISG motor is the air gap size of the ISG motor; the internal cooling water channels of the stator one 10 of the ISG motor and the stator two 11 of the ISG motor use coolant Perform liquid cooling.

The first ISG motor stator 10 and the second ISG motor stator 11 are connected to the casing 1 ; the ISG motor rotor 12 is connected to the hollow shaft 9 .

The first stator 10 of the ISG motor or the second stator 11 of the ISG motor is arranged with the fixed end of the rotary encoder, and the part of the rotor 12 of the ISG motor is fixed with the moving part of the rotary encoder.

The first stator 13 of the main drive motor, the second stator 15 of the main drive motor and the rotor 14 of the main drive motor form a main drive motor with a double stator structure.

The main drive motor stator one 13 and the main drive motor stator two 15 include but are not limited to stator windings, stator iron cores, and cooling water passages; the main drive motor stator one 13 and the main drive motor stator two 15 The internal cooling water passages use coolant for liquid cooling. Cool down.

The distance between the first stator 13 of the main drive motor and the rotor 14 of the main drive motor, and the distance between the second stator 15 of the main drive motor and the rotor 14 of the main drive motor is the size of the air gap of the main drive motor.

The first stator 13 of the main drive motor and the second stator 15 of the main drive motor are connected to the casing 1 .

The main drive motor rotor 14 is connected to the output shaft 8 .

The stator one 13 of the main drive motor or the stator two 15 of the main drive motor is arranged with a fixed end of the rotary encoder, and the rotor 14 of the main drive motor is partially fixed to the moving part of the rotary encoder.

The main drive motor and the ISG disc motor housing can be filled with oil to achieve oil lubrication, and can also be cooled by coolant through the internal water channels of their respective stators.

The output shaft 8 passes through the interior of the hollow shaft 9 , and a support bearing is arranged between the front and rear ends of the hollow shaft 9 and the output shaft 8 .

The sun gear 3, the planetary gear 2, and the ring gear 7 form a planetary row.

The sun gear 3 is connected to the ISG motor rotor 12 through the hollow shaft 9 .

The planetary gear 2 is connected to the input shaft 4 through a planetary carrier 5 on one side.

The other side of the planetary wheel 2 is a support arm structure, and the support arm is connected with the hollow shaft 9 through a support bearing.

The input shaft 4 is connected to the housing 1 through a support bearing, and the inner side of the support bearing is a seal to achieve oil-liquid sealing.

The ring gear 7 is connected to the output shaft 8 through the ring gear carrier 6 .

The planetary housing is filled with oil, preferably gear oil.

The outer casing 1 on the planetary row side is also provided with an oil filling port and an oil draining port.

The first 10 side casing of the ISG motor stator is connected to the hollow shaft 9 through the support bearing, and the second 15 side casing of the main drive motor stator is connected to the output shaft 8 through the support bearing.

The support bearing is used in parallel with the seal to achieve oil seal.

The second stator 11 of the ISG motor and the first stator 13 of the main drive motor are connected together, and are connected with the hollow shaft 9 through the support bearing.

ISG motor stator one 10, ISG motor stator two 11, main drive motor stator one 13 and hollow shaft 9 are axially limited and radially fixed by supporting bearings.

The output shaft 8, the input shaft 4 and the casing 1 are axially limited and radially fixed by supporting bearings and oil seals, respectively.

The flywheel output end 19 of the engine 18 is connected to the input end 16 of the torque shock absorber, and the output end 17 of the torsion shock absorber is connected to the input end of the system. The torsion shock absorber can absorb and filter the vibration of the engine 18 and transmit the power smoothly. to the front input of the system.

The output shaft 8 of the system is connected to the transmission shaft 20, and the transmission shaft 20 is connected to the input end of the main reducer 21 of the drive axle 22; the transmission shaft 20 also includes but is not limited to universal joints, splines, etc. Constant velocity joint, ten-byte joint.

The positive and negative terminals of the power battery 23 are connected to the positive and negative terminals of the high-voltage power distribution unit 24 using a high-voltage wire harness 27 .

The high-voltage power distribution unit 24 includes, but is not limited to, a high-voltage contactor, a high-voltage fuse, a high-voltage control unit, an insulation monitoring module, a current sensor, and the like. High-voltage contactors and high-voltage fuses form a high-voltage distribution shunt.

The electric energy of the power battery 23 passes through the corresponding high-voltage distribution branch inside the high-voltage power distribution unit 24, and outputs the DC power supply of the main drive motor inverter to the main drive motor inverter 25, and outputs the DC power supply of the ISG motor inverter to the ISG motor inverter. device 26.

The ISG motor inverter 26 is connected to the windings of the ISG motor stator through three-phase high-voltage wires. The rotary encoder and temperature sensor of the ISG motor are connected to the ISG motor inverter 26 through a low-voltage wire harness. The ISG motor inverter 26 receives external control. command, control the ISG motor to respond to external commands through the three-phase high-voltage line, and feedback the running status of the ISG motor through the rotary encoder, temperature sensor, etc.

The main drive motor inverter 25 is connected to the winding of the main drive motor stator through three-phase high-voltage wires, and the rotary encoder and temperature sensor of the main drive motor are connected to the main drive motor inverter 25 through a low-voltage wire harness. The main drive motor inverter 25 receives the external control command, controls the main drive motor to respond to the external command through the three-phase high-voltage line, and feeds back the running state of the main drive motor through the rotary encoder, temperature sensor, etc.

The above embodiments are only illustrations or explanations of the technical solutions of the present invention, and should not be construed as limitations on the technical solutions of the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit of the present invention. scope. If these modifications and variations fall within the scope of the claims of the present invention and technical equivalents thereof, the present invention also includes these modifications and variations.

Claims (10)

1. A dual-disc motor electric stepless speed change mechatronics system, comprising a casing, a planetary gear, a sun gear, an input shaft, a planetary carrier, a ring gear carrier, a ring gear, an output shaft, a hollow shaft, an ISG motor stator, an ISG Motor stator, ISG motor rotor, main drive motor stator, main drive motor rotor, main drive motor stator; The ISG motor stator includes an ISG motor stator 1 and an ISG motor stator 2, and the ISG motor stator 1, the ISG motor stator 2 and the ISG motor rotor form an ISG disc motor with a double stator structure; The main drive motor stator includes a main drive motor stator one and a main drive motor stator two, and the main drive motor stator one, the main drive motor stator two and the main drive motor rotor form a main drive motor with a double stator structure; The output shaft passes through the interior of the hollow shaft, and a support bearing is arranged between the front and rear ends of the hollow shaft and the output shaft; The stator of the ISG motor and the stator of the main drive motor are connected together, and are connected with the hollow shaft through a support bearing; The ISG motor stator side casing is connected to the hollow shaft through a support bearing, and the main drive motor stator side casing is connected to the output shaft through a support bearing; The sun gear, planetary gear and ring gear form a planetary row. 2 . The electromechanical integration system of the double-disc motor electric stepless speed change according to claim 1 , wherein the stator of the ISG motor includes a stator winding, a stator iron core and a cooling water channel. 3 . 3. The double-disc motor electric stepless speed change mechatronics system according to claim 2, characterized in that: the ISG motor stator is connected to the casing, the ISG motor rotor is connected to the hollow shaft, and the sun gear passes through the hollow shaft. The shaft is connected to the rotor of the ISG motor. 4 . The double-disc motor electric stepless speed change mechatronics system according to claim 3 , wherein the stator of the main drive motor is connected to the casing, and the rotor of the main drive motor is connected to the output shaft. 5 . 5 . The double-disc motor electric stepless speed change mechatronics system according to claim 4 , wherein the stator of the ISG motor is arranged with a fixed end of the rotary encoder, and the rotor part of the ISG motor and the rotary encoder have a fixed end. 6 . The moving parts are fixed. 6 . The double-disc motor electric stepless speed change mechatronics system according to claim 5 , wherein the main drive motor stator and the ISG motor stator include stator windings, stator iron cores, and cooling water channels. 7 . 7 . The double-disc motor electric stepless speed change mechatronics system according to claim 6 , wherein the stator of the main drive motor is arranged with a fixed end of a rotary encoder, and the rotor of the main drive motor is connected to the rotary encoder. 8 . fixed moving parts. 8 . The dual-disc motor electric continuously variable speed mechatronic system according to claim 7 , wherein one side of the planetary wheel is connected to the input shaft through a planetary carrier, and the other side of the planetary wheel is a support arm. 9 . structure, the support arm is connected with the hollow shaft through a support bearing. 9 . The double-disc motor electric stepless speed change mechatronics system according to claim 8 , wherein the input shaft is connected to the housing through a support bearing, the inner side of the support bearing is a seal, and the support bearing and the seal are connected in parallel. 10 . . 10 . The double-disc motor electric continuously variable speed mechatronics system according to claim 9 , wherein the ring gear is connected to the output shaft through the ring gear frame, and the outer casing on the side of the planetary row is also arranged with an oil heater. 11 . Injector and drain ports.

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